Multi-mode communication device with position detection
FIELD: wireless communications, possible use for realizing communications with systems of both satellite and ground communications.
SUBSTANCE: multi-mode receiver-transmitter for wireless communication device contains first transmission channel for generation of first radio frequency transmission signal, compatible with first communication system, first receiving channel for receiving first radio frequency receipt signal from first communication system, second receipt channel for receiving second radio frequency receipt signal from satellite positioning system and used for determining position of wireless communication device, where aforementioned first and second receipt channels jointly use common receiving route.
EFFECT: combined capacity for ground and/or satellite communication in mobile receiver-transmitter with possible position detection and minimized power consumption.
5 cl, 9 dwg
Background of invention
The technical field to which the invention relates
The present invention relates to wireless communications, in particular to a wireless device, such as a wireless telephone or a modem that can communicate with the systems of both satellite and terrestrial communications and to receive signals from a satellite positioning, which can be determined the location of the wireless device.
Currently, there are many different types of cordless phones or wireless communication systems, including various systems of terrestrial wireless and the various systems of the satellite wireless communications. Various terrestrial wireless system may include a personal communication system (SPS), and cellular systems. Examples of known cellular systems include cellular analog advanced mobile phone service (UPTS, AMPS) and the following digital cellular systems: multiple access code division multiplexing (mdcr, CDMA)systems; multiple access with time division multiplexing (MDR TDMA) and newer hybrid digital communication systems using methods as MDR and mdcr. Cellular system mdcr described in the standard PR Association the industry communication and electronic industry Association (APSS/AEP) IS-95. The combined system UPTS and mdcr described in the standard APS/AEP IS-98. Other communications systems are described in the IMT-2000/UM, or international mobile communication system 2000/universal mobile communication system, standards covering what are referred to as broadband mdcr (SMDR), cdma2000 (such as cdma2000 1x or 3x, for example) or multiple access with time division synchronous code division channels (MDR-TFR, TD-SCDMA).
An exemplary satellite communication system of the type mdcr contains a constellation of 48 low-earth-orbit satellites and many ground stations (also referred to as a fixed ground station or gateway stations (gateways)). The GW connect one or more of the known systems and communication networks with one or more satellite user terminals through a lot of low-orbit satellites. System ground connection associated with stations mates may include, for example, a terrestrial telephone line associated with a public switched telephone network (PSTN (Public switched telephone network, PSTN), a cellular system and the ATP system dedicated optical or microwave links, or the Internet. Satellite user terminals may be mobile, portable or stationary terminals, as required.
Each satellite abonents the second terminal, typically, you may perform reception and transmission on multiple satellites. It provides the required level explode by satellites in space. Satellite user terminals using separation by satellites, to improve the service area of the satellite communication through the elimination of obstacles to line-of-sight between the satellite user terminal and any given satellite. In some systems, the satellites serve only as converters and repeaters. They may not contain or not to use the possibilities of modulation or demodulation. The signal transmitted from the user terminal to the satellite, referred to as signal or frequency satellite line up. The signal sent from the satellite to the user terminal, referred to as signal or frequency satellite line down. If viewed from the side of the satellite, which is one of the few or simple relay, the signals that pass from the gateway station to the subscriber terminals, referred to as signals (communications) a straight line, and the signals coming from the subscriber terminal to the station pair, referred to as signals a return line connection (if viewed from the subscriber terminal).
The satellite converts the frequency of the satellite line up (reverse the turn the user terminal) in the frequency of a straight line or a relay line system "station mates satellite", transmitted from the satellite to the station pair. Also the satellite converts the frequency of the satellite lines down in frequency relay line or a return line system satellite-station pair transmitted by the satellite to the subscriber terminal (direct subscriber line terminal). For example, if the frequency of the line down the subscriber terminal is 2500 megahertz (MHz) and the frequency of the line up is 1600 MHz, the satellite displays or converts the signals on these frequencies in other required frequency lines such as 5100 MHz and 6900 MHz, respectively. Each satellite line "down" has a number or group "rays" (or sectors), forming a mark on the surface of the Earth. A typical satellite can use sixteen of these rays. Sometimes multiple beams at different frequencies are used to cover the same this zone in one directional "beam"and each referred to as "podlech".
For communication systems mdcr using pseudosolenia or pseudo-random codes for modulation, each beam line "down", and, in most cases, each satellite uses a single value of phase shift pseudotumor code for identification purposes of the beam. Within each beam orthogonal codes such as Walsh codes are used for radiotherapy or policewala channel translating, creating a number of the individual code channels for communication in respect of each subscriber terminal. In practice, the rays from one satellite to form a trail that can cover large geographical areas, such as entire countries, like the United States. The satellites receive signals from the communication satellite line up or return line from the subscriber terminal, using a number or group of rays (or sectors) in the pattern, usually sixteen. The pattern of rays of direct and return lines must not be identical.
In an exemplary system, satellite wireless mdcr overall frequency or group of frequencies that define the different rays, is used by each station pair, transmitting to satellites or through them. General radio frequency allow simultaneous transmission over multiple satellites on a single station pair or from it. Individual user terminals are separated through the use of long pseudotumour codes or pseudotumour codes with a high rate of repetition of elements of the signal on the return line communication signal and the orthogonal codes and polucha) or codes (and polucha) Walsh on a straight line communication signal. Pseudosolenia codes with high speed and Walsh codes are used to modulate signals transmitted from stations mates and transceiver of the subscriber terminal. Input terminal (station SOP is agenia and user terminal) can use different pseudosolenia codes shifted in time relative to each other (and/or Walsh codes), thereby creating the transmitted signals, which can be taken separately at the receiving terminal.
Each station pair transmits a pilot signal having a common psevdochumoy widening or the code pair, which is shifted in phase code from the pilot signal from the other station of the pair. Unique pair pseudotumour codes can be used to identify the satellites within a particular orbital plane. In addition, each station pair can be unambiguously identifies psevdochumoy code, and each beam line "down" (from the satellite to the user terminal) has a different shift pseudotumor code relative to the other beams line "down" for a companion.
During operation of the system of the subscriber terminal has a model of the orbital group of satellites and the user terminal is provided by the list pseudotumour codes and phase shifts pseudotumor code for each satellite included in the visible or located within sight from the user terminal, or gateways. In addition, external pseudosolenia code sequence, as described in application for U.S. patent No. 09/169 358, entitled "Multi-Layered PN Code Spreading In A Multi-User Communications System"(Multilevel extension pseudocumene the codes in a multi-user communication system), Harms et al and incorporated herein by reference, may be used to identify specific sources, such as gateway stations or satellites. This psevdochumoy code can be used to derive time and the phase difference between the satellites in view at any point in time or having the same and/or other orbit. Subscriber terminal is equipped with elements that are useful for simultaneous detection and tracking beams from multiple satellites in numerous orbits.
Technology mdcr provides a mechanism for transmission service between satellite beams by changing pseudotumour codes used for demodulation or compression of the received signals. In General, this can be accomplished by using one or more codes in the code set and the phase change codes to reconcile different phase shifts of the code used between different sources or beams of the signal. When more than one satellite is in view of the subscriber terminal, the subscriber terminal can communicate with the station mates through more than one satellite. As a result, the gateway station to the subscriber terminal can be achieved by transfer of the call between the satellites. This capacity is ü communication with multiple satellites provides diversity by satellites system (also referred to, as the separation in space). If trees, mountains or buildings form a barrier for the satellite line to the subscriber terminal, the subscriber terminal can support the communication line is active through the transfer of service to another satellite in the zone of visibility.
An exemplary satellite communication system is a global system of communication with global roaming capability. The best results were reached when between the subscriber terminal and the satellite, there is line of sight. Preferably, the user terminal have unrestricted visibility of the satellite. In cities and urban setting may be difficult to achieve such an unobstructed view. In addition, the satellite subscriber terminal may find it more convenient to use inside the building of the radiotelephone or wireless communication devices, including wireless modems.
Currently, the subscriber system can reach a certain level mobile with global roaming for communication with many points on Earth using in combination terminal satellite communications system International mobile satellite organization (MOPS) and cell phone. Terminal satellite communication system of MAPS is cumbersome and expensive and does not provide functionaldisability with a cellular system. Therefore, the subscriber would have to carry a second means of communication, i.e. cell phone, which can be unworkable in many areas.
There are alternative systems to achieve global roaming using a satellite phone. However, these roads are relatively bulky and require a large amount of accessories for communication.
There is therefore a need for a small, affordable mobile phone or wireless device that can work with satellite and ground systems SPS and/or cellular systems, such as cellular mdcr, cellular MDR or analog cellular system.
In addition to the above systems, satellite and terrestrial communications known system for providing a mobile terminal information about the location of the movable terminal. One such system is based on the global positioning system (GPS). SHG can provide accurate continuous world three-dimensional location information regarding SHG-jamnica on the Earth's surface. SHG consists of 24 satellites in six orbital planes with an inclination angle of 55°. Within sight of the ground GSP receiver can be set, for example, at least four GPS satellites for any point on Earth, if only in the need of SHG-no satellite is being blocked ground objects (for example, buildings, trees or mountains).
During operation of the GSP receiver receives satellite SHG signal from each SHG-satellite, which is located within sight of the GSP receiver. GSP receiver determines the arrival time (TA) of each received satellite SHG signal. Based on the EAP, GSP receiver determines the time of transmission of a receiver-satellite accept SHG signal and the corresponding distance between the receiver and the satellite for each satellite. GSP receiver performs the triangulation of the provisions of the GSP receiver on Earth, based on the three distances between the receiver and the satellite. In practice, GSP receiver uses the fourth dimension (time) to calculate its position on Earth. For example, GSP receiver needs time SHGs. Time SHGs can be obtained from the fourth GSP satellites from the ground radio base station mdcr and/or from low-orbit satellite systems mdcr.
It is desirable to combine the capabilities of terrestrial and/or satellite communication in a mobile transceiver with the ability to determine location, in order to enable the subscriber to communicate with the systems of terrestrial and/or satellite communications and to determine the location of the subscriber (i.e. rolling transceiver).
It is also desirable to minimize the size, weight and power consumption and cost in Rel is to that of the rolling transceiver.
Summary of the invention
In the present invention results from the multi-band mobile phone (also referred to as a mobile station and a wireless communication device (BUS)), is able to communicate with the satellite communication system and a terrestrial communications system. The satellite communication system can be a low-orbit satellite system. System ground connection may be ATP (PCS) and/or cellular system, which includes both analog and digital cellular system. Cellular analog system can be UPTS (AMPC). Digital cellular system may be a system mdcr (CDMA). BEADS can simultaneously receive signals from a terrestrial communications system and satellite communication system. This is useful for receiving paging signals from a satellite communication system, at the same time carrying out communication with a terrestrial communications system, and to control the coverage area of the satellites. Also, the BEADS may be taken separately one or more satellite SHG signal or both signals of satellite communications and SHG signals.
BEADS includes a transmission channel satellite data (also referred to as satellite transmission channel and the transmission channel ground connection (also referred to as terrestrial transmission channel). Each of these transmission channels includes a section intermediate the th frequency (if), the upconverter frequency or mixer and radio frequency (RF) section. Section FC of the two transmission channels share a common signal path, FC transmission, including common components of the inverter transfer.
BEADS includes a channel for receiving satellite information (also referred to as satellite channel), a channel receiving terrestrial communications (also referred to as terrestrial receive channel and receive channel SHGs. Each of these receiving channels includes an RF section, a Converter with decreasing frequency or the mixer and the if section. Section FC of these three sections share a common reception path of the if signal reception, including common components of the inverter reception.
BEADS includes a first signal source to generate the first reference signal lo (G) for transmission channels as satellite and terrestrial communications, terrestrial receive channel of communication and receive channel SHGs. A second signal source generates a second reference signal G, regardless of the first reference signal G, for receiving channel satellite connection.
The above-mentioned General device frequency transmission and reception, a common source of local oscillator input to the transmission paths and independent local oscillators for satellite receive channel enable advantageous to perform the BEADS in the form of a small portable pocket phone. Therefore, the subscriber BEADS can conveniently carry the one small phone instead, for example, three different devices: cellular phone, a large and expensive satellite phone for global phone coverage and GPS receiver.
As mentioned above, the present invention provides a small, inexpensive mobile transceiver, which can work with satellite system and ground system ATP/cell system such as a cellular system mdcr, mdvr or analog (for example UPTS) cellular system.
The present invention has the sign of the Alliance of terrestrial and/or satellite communication in a mobile transceiver with the ability to determine the location, allowing the subscriber to communicate with the systems of terrestrial and/or satellite communications and to determine the location of the subscriber (i.e. rolling transceiver).
The present invention has the advantage of minimizing cost and minimizing size, weight and power consumption through the common paths and components of the signal in a mobile transceiver in the various operating modes of the transceiver.
Brief description of drawings
The above and other features and advantages of the invention are evident from the following, more particular description of exemplary embodiments of the invention, as depicted on the attached is artiach.
Figure 1 presents an image of an exemplary environment in which can operate embodiment of a wireless communication device (BEADS) of the present invention.
Figure 2 presents enlarged block diagram of BEADS, useful for making BEADS of figure 1.
On figa presents detailed block diagram of BEADS in figure 2.
On fig.3b presents detailed block diagram of the processor main frequency band useful for the implementation of the processor 310 on figa and the subsequent drawings.
4 shows the block diagram of BEADS, in which the receive channel of SHGs and satellite receive channel can operate simultaneously, in accordance with a variant implementation of the invention.
Figure 5 presents the block diagram of BEADS in accordance with another variant of execution.
Figure 6 presents a block diagram of BEADS in accordance with another variant of execution.
Figure 7 presents the sequence diagram of exemplary operations of a method of simultaneous operation of the BEADS according to the present invention as in the satellite mode of communication, and in receive mode SHGs to quickly establish the location of the BEADS based on the SSE.
Detailed description of embodiments
Figure 1 shows the approximate image of the environment (protection) 100, which can operate the wireless device 102 communication BUS of the present invention. About ruzena 100 includes a constellation of GSP-satellites 104, each of GSP-satellites is essentially geosynchronous orbit. GSP-satellites 104 transmit RF signals 106 GSP on the Ground. The environment 100 also includes a constellation of satellites 108 communication. Satellites 108 are part of a satellite communications system. Each of the satellites 108 can take a low earth orbit and transmit RF signal 110 communication line down towards the Ground. Each of the satellites 108 transmits the RF signal 110 communication line down towards the Ground. Each of the satellites can receive RF signal 112 communication lines up from the ground transmitter, compatible with the satellites 108. Satellites 108 communicate with the ground station 114 mates. Station 114 pair is associated with a variety of systems and communication networks, such as PSTN, the Internet, dedicated service, high-speed data transmission, optical transmission lines, etc.
The environment 100 additionally includes a system and a terrestrial communications network. For example, the terrestrial communications system may include a first set of nodes of the PCA and/or cellular (e.g., base stations, and supporting structures of antennas), represented by the position 120, and the second set of base stations PCA and/or cellular base stations, represented by the position 122. Base station 120 may be connected to system ground digital communication mdcr or MDR (or a hybrid of the IPD/MDR). Therefore, base station 120 may transmit ground signal 123 type mdcr or mdvr mobile station or subscriber terminal can receive a signal 124 mdvr or mdcr from rolling block or subscriber terminal. Terrestrial signal may be formatted in accordance with the standards IMT-2000/UMT (i.e. the standards of the international mobile communications 2000/universal mobile communication system). Ground signal may be a signal broadband mdcr (referred to as signal SMDR), or a signal corresponding to the cdma2000 (such as cdma2000 1x or 3x, for example), or the signal MDR-TFR.
On the other hand, base station 122 may be connected to system analog ground connection (such as UPTS, AMPS). Therefore, base station 122 may transmit a signal 126 analog connection on the mobile device and can receive a signal 128 analog connection from the mobile device.
Each wireless communication device is or includes devices such as, but not limited to, a wireless telephone handset or telephone, a cellular telephone, a data transceiver, or a paging receiver or receiver location, and can be hand-held or portable, for example, installed on a vehicle (including cars, trucks, boats, trains and planes), the AK will be required. However, while wireless communication devices were viewed as moving, it is also clear that the inventive concept is applicable to "fixed" blocks in some configurations. In addition, the inventive concept is applicable to wireless devices, such as one or more modules or data modems, which can be used for transmission of traffic data and/or voice traffic and can communicate with other devices using cables or other known wireless communication or connection, for example, to transmit information, commands or audio signals. In addition, commands can be used to organize work modems or modules pre-defined coordinated or associated image for the transmission of information through multiple channels of communication. Wireless communication devices are sometimes referred to as user terminals, mobile stations, mobile units (devices), subscriber units, mobile radios or cordless phones, wireless units, or simply as "subscribers" and "mobile subscribers" in some communication systems, depending on preference.
II. Quad-mode BEADS
Figure 2 presents enlarged block diagram of the BEADS 102 in accordance with a variant implementation of the present invention. BEADS 102 can be configurer the Vano to work in any one, and, in some cases, more than one of the following modes:
1) the satellite mobile communication system and a satellite communication through satellites 108;
2) mode analog ground connection for communication with the system analog ground connection;
3) mode of terrestrial digital communication for communication with a terrestrial digital communication; and
4) receive mode SHGs for receiving and processing satellite SHG-signalov and to determine the location of the BEADS based on the SSE.
To achieve such multi-mode operation of the BEADS 102 includes a single multi-mode transceiver 202 that is associated with the following antennas multimode transceiver:
1) transmit antenna 204 to transmit the RF signal 112 on the satellites 108;
2) reception antenna 206 for receiving the RF signal from satellites 110 108;
3) General transmitting/receiving antenna 208, such as a flexible whip or helical antenna for transmitting RF signalov 124/128 related to the above system ground connection and for receiving RF signals 123/126 from terrestrial communications systems; and
4) GSP-antenna 210, such as a microstrip antenna, for receiving the RF signal 106 GSP-satellites from GSP-satellites 108.
Multimode transceiver 202 includes a transceiver 212 satellite communication with a channel 214 transmission of satellite data (so the e referred to, as satellite channel 214) and the channel 216 of the receiving satellite information (also referred to as satellite channel 216 admission). Satellite channel 214 transmission includes a section (also referred to as paths) signal processing baseband frequencies, the if and RF for receiving the RF signal 218 transmission and for receiving the RF signal at the antenna 204. Receiving antenna 206 feeds the received RF signal 220 in satellite channel 216 reception. Satellite channel 216 of the receiving includes components RF, if and baseband frequency for processing the received signal.
Multimode transceiver 202 also includes a transceiver 222 ground mode with the channel 224 of information transmission terrestrial communications (also referred to as terrestrial channel 224) and the channel 226 of the receiving ground connection (also referred to as terrestrial channel 226 admission). Terrestrial channel 224 transmission includes a section of the signal processing RF, if and baseband frequencies to create RF signal 227 transmission and ensure the transmission of RF signal on the common antenna 208. Satellite channel 214 transmission and terrestrial channel 224 transmission share a common paths of the if signal and base band frequency transceiver 202, as described in detail below. General antenna 208 also provides feed received RF signal 228 in Nate the hydrated channel 226 admission. Terrestrial channel 226 of the receiving sections of the signal processing RF, if and baseband frequency for processing the received signal 228. In another embodiment, the separate receiving and transmitting antennas can replace common antenna 208.
BEADS 102 also typically includes a channel 230 receiving SHGs. The channel 230 of the data reception system SSE accepts the received RF signal 232 SHG from the SSE antenna 210 and processes the received signal using the section signal processing RF, if and baseband frequencies. The channel 230 signals GSP, satellite channel 216 and receive terrestrial channel 226 receive share a common paths of the if signal and base band frequency transceiver 202, as described in detail below.
On figa presents detailed block diagram of the BEADS 102 in accordance with a variant of execution.
A. transmission Channel satellite communication
BEADS 102 includes satellite channel 214 transmission (shown in figure 2) for receiving the RF signal 112 transmission. As shown in figa, satellite channel 214 transmission includes a processor 310 main band (POPC) to generate the if signal 312 of the transmission corresponding to the satellite RF signal 112 transmission. POPC 310 preferably creates an if-signal 312 in the form of a differential inverter signal transmission. Also the if signal 312 has an approximate frequency FC of the front and, equal 228,6 MHz. POPC 310 generates the if signal 312 transfer to General tract if-signal transmission (also referred to as General the if section of transmission (if signal)that includes a common amplifier 314 inverter with adjustable gain. The amplifier 314 with adjustable gain amplifies the if signal 312 and supplies the amplified if signal to the input of a General mechanism 316 routing the if signal. The amplifier 314 with AGC and mechanism 316 routing, preferably, but not necessarily, are differential. Mechanism 316 routing may be the FC switch for selective direction of amplified if signal at the input of the switch to any of:
1) satellite path 318 FC satellite channel 214 of the transfer; or
2) land tract 319 FC (described in detail below) ground channel 224 of the transmission based on the signal route selection (mode) (not shown)applied to the switch.
When you transfer mode satellite communication, the switch 316 sends the amplified if signal at the input of the switch to satellite path 318 FC. Satellite path 318 FC transmit a signal to the input of the bandpass filter (PF) 320 FC, which can be a filter, surface acoustic wave (saw filter). PF 320 filters the if signal is sent to PF through the mechanism 316 routing. PF 320 delivers the enhanced, the filtered if-signal on the mixer 322. The mixer 322 converts with increasing frequency, amplified, filtered if signal into a RF signal 324 based on the first reference signal 326 lo (G)supplied to the mixer 322. RF signal 324 transmission has a frequency corresponding to the frequency band of transmission (with BEADS on satellite) satellite communications.
The mixer 322 delivers the RF signal 324 to the RF section of the satellite transmission channel 214 transmission. Section RF transmission includes the following sequentially connected components processing the RF signal: the first PF 326 RF filtering the RF signal 324; amplifier 328 RF for amplifying the filtered RF signal generated by the PF 326; second 330 PF RF for additional filtering of amplified RF signal generated by the amplifier 328 RF; and the amplifier 332 power RF for additional strengthening of the RF signal generated PF 330. Section RF transmission may have a gain of RF signals about 50 dB, or what is required for a particular application. Satellite amplifier 332 power delivers enhanced power RF signal 218 at the satellite transmitting antenna 204. Satellite transmit antenna 204 transmits the RF signal 218 in the form of satellite RF signal 112 transfer.
C. transmission Channel terrestrial communications
Terrestrial channel 224 transmission shares the processor 310 is basically the band, the amplifier 314 inverter with adjustable gain and mechanism 316 routing the if signal with satellite channel 214 of the transmission described above. This commonality in the inverter advantageously reduces the cost of the transceiver, and space and power consumption. In ground mode, in this case, POPC 310 delivers the if-signal 312 of the transmission, the corresponding ground RF Shalom 124/128 transmission to the amplifier 314 with adjustable gain. When you need a ground connection in the transmission mode, the switch 316 FC directs the amplified if signal generated by the amplifier 314, a land tract 319 FC transfer and, thus, the mixer 334. Similarly, the mixer 322, mixer 334 converts with the increase of the intermediate frequency signal transmission RF signal 336 based on the reference signal 326 MG fed to the mixer. RF signal 336 transmission has a frequency corresponding to the frequency band of transmission (with BSU to the base station) ground connection.
The mixer 334 delivers the RF signal 336 transmission section RF transmission terrestrial channel 224 of the transmission. Section RF transmission includes the following sequentially connected components of the RF: the first PF 338 RF amplifier 340 RF, the second PF 342 RF and the amplifier 344 power. PF 338 and 342 have RF bandwidth, compatible with terrestrial transmission signals to be filtering them, such to the signals to analog or digital cellular systems, system personal communication, cdma2000 1x or 2x or SMDR. The amplifier 344 power delivers enhanced power ground RF input antenna switch 346. Section RF transmission may have an overall gain RF, similar to the gain section of the RF transmission satellite channel 214 transfer.
The antenna switch 346 includes a section RF filter transmission and reception to separate terrestrial RF signal transmission and reception from each other. This is because terrestrial RF shyly 124/128 and 123/126 send and receive unite on common ground the antenna 208. The antenna switch 346 delivers the filtered amplified by the RF power signal ground transmit (e.g., RF signal 226) for the antenna 208. The antenna switch 346 may be eliminated in an alternative embodiment, which includes a separate ground-based transmitting and receiving antennas RF.
In an alternative embodiment, the substituted separate satellite and terrestrial section of the RF transmit one channel RF transmission that involves a single broadband RF power amplifier for amplifying a frequency of terrestrial and satellite frequencies. However, in this embodiment, the satellite and terrestrial RF filters should be included in one transmission path depending on whether you have selected satellite or terrestrial transmission mode./p>
C. receive Channel satellite communication
In satellite channel 216 admission (shown on the lower left side of figure 3) antenna 206 delivers the received RF signal 220 low power to the RF section includes the following sequentially connected components RF: PF 352 to filter out noise (such as the mirror side of the band, ground signals, including the signals of the PCA and/or cellular systems, and signal 218 transmission generated satellite channel 214 transfer) from the received RF signal 220, in order to avoid overloading the RF section; a first low noise amplifier (LNA) 354 (having an approximate conversion gain RF 25 dB) for amplifying the filtered RF signal generated PF 352; second PF 356 RF for filtering the amplified RF signal generated by the first LNA 354; and the second LNA 358 for additional strengthening of the filtered RF signal generated PF 356. The second LNA 358 delivers given to the appropriate view RF signal to the mixer 360 RF.
The mixer 360 converts with decreasing frequency, refer to the appropriate view RF signal into the if signal 362, based on the reference signal 364 G supplied to the mixer 360. Take the if signal 362 may be approximate frequency FC of approximately 186,3 MHz. The mixer 360 preferably takes the differential if signal to the amplifier 366 inverter for amplifying the if-signal. The amplifier the amplified if signal on the first path 368 accept the if signal, and, thus, at the first input mechanism 370 routing the if signal. Mechanism 370 routing includes a second input connected to a second channel 372 accept the if signal associated with the channel 230 receiving SHGs and terrestrial channel 224 reception, which can be described in more detail below.
Mechanism 370 routing may be the FC switch for selective direction of the if signal in the path 368, or the if signal in the path 372, for a total output path 374 if reception is connected to the output switch. When you need a satellite connection in the reception mode, the switch 370 sends the if signal in the path 368 to a common output path 374 and, thus, the overall PF inverter 376. PF 376 may be a saw filter. PF 376 FC has a bandwidth that is compatible with the frequency band satellite signal to be filtered them. Also PF 376 has a bandwidth that is compatible with the frequency band of the received terrestrial signal to be filtered them.
For example, PF 376 has an approximate bandwidth of 1.5 MHz for cdma2000 1x signal (with an approximate bandwidth of 1.25 MHz, 5 MHz signal SMDR (with an approximate bandwidth of 4,96 MHz and 4 MHz for signal cdma2000 3x (with an approximate bandwidth of 3.75 MHz) (alternatively, if filter with a bandwidth of 5 MHz can be used to filter signals as SMDR and cdma2000). PF 376 podaa the filtered if signal to the amplifier 378 FC with AGC. The amplifier 378 with AGC delivers the amplified if signal combining amplifier with AGC 380. Combining amplifier with AGC 380 delivers the if-signal 381 to the processor 310 of the main frequency band through a common path 382 the if signal. All of the above components processing the received if signal and the associated accept the if signals, preferably, though not necessarily, are differential.
D. receive Channel SHG
In the channel 230 of SHGs receiving antenna 210 delivers the received RF signal 232 GPS section RF reception SHGs, including 386 PF RF and LNA 388. PF 386 interference filters, such as the mirror side of the band, and the signal ground of the PCA and/or cellular system from the received RF signal 232 SHGs in order to avoid overloading LNA 388. In reception mode SHG satellite channel 214 transmission can be deactivated in order to further reduce interference. PF 386 delivers the filtered RF signal SHGs LNA 388 SHGs. LNA 388 delivers the amplified RF signal SHGs mixer 390.
Mixer 390 converts with decreasing frequency RF SHG signal in the if signal 392 SHGs. Mixer 390 delivers the if-signal 392 to the second path 372 if-signal (described above in connection with satellite channel 216 admission) and, thus, to the second input switch 370 FC. When you want to receive GSP, the switch 370 sends the if signal 392 for a total PF 376, the amplifier 378 with AGC, uniting Wuxi is ital 380 with AGC and thus, POPC 310.
E. Terrestrial receive channel
In terrestrial channel 226 receive shared antenna 208 delivers the ground received RF signal 228 (corresponding terrestrial signals 124/126) to the antenna switch 346. The antenna switch 346 delivers ground received RF signal to the RF section ground receiving channel, including the following, sequentially connected components processing the RF signal: LNA 396; PF 398 RF and selective mechanism 400 routing the RF signal. Mechanism 400, the routing may be an RF switch for selective direction of the RF signal at the input of the switch or on a first output path 402 RF signal or the second output path 404 RF signal based on the control signal selection (not shown)supplied to the RF switch.
1. Analog terrestrial sub-channel reception
Terrestrial channel 226 admission includes a first sub-channel associated with the first switched output path 402 RF. In one embodiment, this first sub-channel can receive and process analog cellular signals, such as signals UPTS. In analog cellular mode switch 400 RF delivers the switched RF signal path 402 and, thus, the mixer 406 in the first subchannel. The mixer 406 converts with decreasing frequency switching RF signal into the if signal 408, based on the reference signal 326 MG fed to the mixer 406. The mixer 406 supplies the if signal 408 on PF 410, which may be a saw filter. PF 410 has a bandwidth that is compatible with the frequency band cellular signal FM reception which you want to filter. PF 410 delivers the filtered if signal to the amplifier 412 FC with AGC, and the amplifier 412 delivers the amplified if signal combining amplifier with AGC 380. Combining amplifier with AGC 380 delivers the amplified if signal (represented by the if-signal 381) on the processor 310 baseband frequencies. When the switch 400 RF and switch 370 FC are arranged as shown in figure 3, the BEADS 102 can receive and process analog terrestrial signals and satellite signals.
2. Terrestrial digital sub-channel receiver
Terrestrial channel 226 also includes a second sub-channel associated with the second switched output path 404 RF. In one embodiment, the second sub-channel receives and processes digital cellular signals mdcr or MDR. In digital cellular mode switch 400 RF delivers the switched RF signal path 404 of the signal and, thus, the mixer 414 in the second subchannel. The mixer 414 converts with decreasing frequency switching RF signal in the incoming FC signal 416. The mixer 414 supplies the if signal 416 to the tract 372 FC reception and, thus, to the second input switch 370 FC. In digital cellular mode switch are if-signal 416 to the output path 374 and, thus, PF 376, the amplifier 378 with AGC and connecting the amplifier with AGC 380.
As described above, the terrestrial channel 226 reception, satellite channel 216 can receive and channel 230 receiving GSP share a common differential paths of the inverter signal and components of the inverter. Such a device advantageously reduces the cost and size and power consumption of the receiver. This is especially important in the pocket mobile applications.
Switches 400 RF and differential switches 316 and 370 FC in the paths of transmission and reception can be performed using diodes, transistors, field-effect transistors, mechanical relays and/or other switching devices. Alternative devices replace the differential switches, differential power divider and a differential power combiners. In addition, terrestrial and satellite channels can be combined using differential diplexer in those cases, when the intermediate frequency is different.
BEADS 102 includes a source 417 reference signal to generate the reference signal 326, In one embodiment, the source 417 signal is a dual-band frequency synthesizer, such as dual-band phase locked loop (PLL). Source 417 signal delivers the output signal G to one or more power divider not shown) for receiving the reference signal 326 to the corresponding input D of each of the mixers 322, 334, 390, 406 and 414. Therefore, the source 417 signal delivers the reference signal G on satellite channel 214 transmission, terrestrial channels 224 and 226 transmission and reception and the channel 230 receiving GSP.
BEADS 102 also includes a second source of reference signal 418, which can be a frequency synthesizer/PLL, to generate the reference signal 364, Thus, the second source signal 418 delivers the reference signal 364 G on satellite channel 216 reception. In the present invention, the sources 417 and 418 of the signals are controlled independently, so that the corresponding frequency of the reference signals 326 and 364 are regulated independently accordingly. This is done in contrast to some well-known transceivers that are sources of signals G for transmission and reception, which form the reference signals for transmission and reception, having frequencies that are dependent from one another.
In the present embodiment, the independent control of sources 417 and 418 signals advantageously provides various spectrum allocation for transmission and reception associated with different geographical regions of the Earth. For example, the first country to allocate spectrum for satellite reception from 2480 to 2490 MHz frequency range for transmission to the satellites from 1615 to 1617 MHz. The second country may allocate a different way. For example, the second country may allocate frequency spectrum on the I satellite reception from 2485 to 2491 MHz frequency range for transmission to the satellites from 1610 to 1613 MHz. In such cases, the present invention provides operators of communication systems maximum flexibility for global roaming, as different spectrum allocation is easily provided using independent control of frequency G-mode transmission and reception. In addition, the satellite receiver can operate independently and simultaneously with terrestrial TV transmission and reception.
Similarly, independent control of frequency sources 417 and 418 of the signals G can prevent global ground-work BEADS. For example, sources 417 and 418 can generate the appropriate reference signals 326 and 364 G, having a frequency, for example, compatible with the distributions of the frequency spectrum for terrestrial transmission and reception in the United States, Japan, Korea, China, and Europe.
G. Distribution (planning) frequency
BEADS 102 has a frequency FC of the transmission, for example, equal 228,6 MHz, which is common for both satellite and terrestrial channels 214 and 216 of the transmission. BEADS 102 has, for example, the frequency inverter receiving equal 183,6 MHz, 45 MHz lower than the frequency FC of the transmission. This frequency shift is 45 MHz corresponds to a frequency shift by 45 MHz between cellular frequency bands, transmission and reception in the United States. Alternatively, BEADS 300 has a second estimated frequency FC transmission, equal 130,38 MHz and the corresponding second sample h is a frequency inverter receiving, equal 85,38 MHz. Other pairs of if frequencies of transmission and reception.
In combined mode satellite communication and reception of SHGs BEADS 102 organizes communication with an approximate low-orbit satellite communication system mdcr and can simultaneously receive signals from GSP-satellites. Therefore, satellite channel 216 of the receiving receives signals from a satellite line down in the frequency range 2480-2500 MHz. Satellite channel 214 of the transmission signals and the satellite line up in the frequency range 1610-1622 MHz.
Assuming, for example, that the frequency of the reverse channel (i.e. transmission lines "up") satellite system is 1620,42 MHz (or channel 327 when the step size between the channels 30 kHz)and the frequency FC of the transmission is 228,6 MHz, then the frequency of the reference signal 326 G (i.e. the frequency of the G transmission to the satellite) can be determined according to:
G transmission to the satellite = 1620,42 - 228,6 MHz = 1391,82 MHz, or, alternatively,
G transmission to the satellite = 1620,42 - 130,38 MHz = 1490,04 MHz.
Other frequency reference signal 326
In receive mode SHGs, assuming that the channel 230 receiving GSP takes SHG signals having the approximate frequency of 1575.42 MHz, and accept the if signal has a frequency 183,6 MHz, then the frequency of the reference signal 364 MG can be determined according to:
frequency SHG - frequency G transmission to the satellite = 1575,42 - 1391,82 = 183,6 MHz (FC receiver
In the mode of terrestrial digital or analog communication BUS 102 can transmit and receive cellular signals. As mentioned above, the antenna switch 346 is configured to separate the cellular signal 227 transfer from cell received signal 228. In one embodiment, the appropriate allocation of frequency spectrum cellular United States cellular transmission frequency (for example from 825 to 845 MHz to 45 MHz below the corresponding cell frequencies are received (for example from 870 to 890 MHz). Therefore, the antenna switch 346 includes a filter section to transmit and receive, shifted in frequency from one another by 45 MHz, so that the filter section to transmit and receive coincide respectively with the cell-frequency transmission and reception. In addition, the frequency FC of the transmission and reception used in BEADS 102, are shifted from each other by 45 MHz to match the frequency shift is 45 MHz between cellular frequency transmission and reception.
Can be used in alternative embodiments of the with other ground systems, systems such as PCA, global system for mobile communications (GSPS), advanced public communication system (WOSS) and public communication system (OSS). For example, an exemplary frequency band of transmission of the PCA in the United States may correspond to the above-mentioned cellular frequency band or range of frequencies 1850-910 MHz only transfer the PCA. Similarly, the approximate bandwidth of the reception of the PCA in the United States may correspond to the above-mentioned cellular frequency range or frequency band 1930-1990 MHz only receiving PCA. Alternative implementation can provide various shifts of the frequency of transmission/reception in other terrestrial systems by adjusting accordingly the above-mentioned shift of the intermediate frequency transmission/reception by use of an antenna switch having a suitable corresponding frequency shift between the sections of the filter transmission and reception. For example, in alternative embodiments, execution can be used, as appropriate, of the intermediate frequency transmission and reception other than those above-mentioned.
H. controlling the transmit power of the transceiver
The amplifier 214 FC transmission with adjustable gain and amplifiers 378, 380 and inverter 412 received from the AGC can be used for power control with both open and closed loop in BEADS 102. Power control with open loop refers to the power control is done entirely in BEADS 102. On the other hand, power control closed loop refers to the capacity management, carrying out, using, among other things, commands transmitted on BUS 102, for example, station mates or terrestrial base station. Example power control with open loop ground connection mdcr described in U.S. patent No. 5 056 109, issued by Gilhousen et al, which is incorporated herein by reference.
1. Power control ground mode
In one embodiment, the present invention performs power control closed loop mode terrestrial communications using the above if amplifier transmission and reception with AGC. The following exemplary process may be used to perform power control closed loop. First, when the BEADS 102 receives a ground signal 123/126, the gain of each amplifier 412, 378 and 380 FC received from the AGC can be adjusted so that the amplifier with AGC 380 delivers the received if signal 381 to POPC 310 with a corresponding power level. When the if signal 381 has a corresponding power level, BEADS 102 can properly demodulate the received signal and may estimate the received signal power.
Then adjusts the gain of the amplifier 314 FC transmission with ARU, so that the power level of the RF signal 226 transfer, for example, below a predefined amount estimated received signal power. This power level may be further adjusted, for example, increased or decreased, based on the data correction power is STI transmission, transmitted on BUS 102 terrestrial base station. In one embodiment, the gain of the amplifier 314 with adjustable gain is adjusted so that the power level of the RF signal 226 73 dB higher than the received power level.
Power control closed loop can be carried out in accordance with the following equation:
the average transmit output power = k is the average received power + 0,5*NOM_PWR + 0,5*INIT_PWR + the sum of all adjustments power samples access + the sum of all adjustments power control closed loop.
NOM_PWR and INIT_PWR - system parameters (nominal and initial capacity), each initially set to 0 dB. Power correction sample access and adjustment of power control closed loop represent data received from the base station related to the power levels for signals from user terminals or mobile stations requesting access to the system, and the readings of the power level of the received signal of a closed loop, respectively.
k- constant reversing transmission, defined by the following equation:
k =(Pt)c-134+(NF)c+10·Log(1 +ζ1+ζ2) - 10·Log(1-X)
(Pt/i> )cthe transmit power of the base station;
(NF)cthe noise figure of the base station receiver;
ζ1and ζ2-power ratio of interference from other base stations and
X- the load factor of the cell.
Constantkthe reversing transmission is normally -73 dB.
2. Power control in satellite mode
Mode satellite communication usually uses power control different from the mechanism used in the mode of terrestrial communications. In this case, the power level of the transmitted signal 112 in the line up can be independent of the power level of the received signal 110 by line down. The power level of the transmitted signal is mainly controlled by the station 114 mates. Station 114 mates sends a command on BUS 102 to increase or decrease the power level of the signal on line 110 "up", so that the station 114 pair receives the signal on the line up (passed through BEADS) with a predetermined or required power level. However, the BEADS 102 can also use the power level of the received signals as the basis for adjusting their relative power transfer.
I. processing Functions of the main bands
1. The transmission direction
The subscriber BEADS 102 may perform an input sound signal in the US, using the microphone 420. The microphone 420 delivers the analog audio signal 422 to the processor 424 audio signal. The processor 424 audio signal, digitizes and processes the audio signal to obtain a digital audio signal transfer. The processor 424 audio signal takes the digital audio signal transmission to the controller and the memory 428 in a bidirectional digital bus 430. The controller and memory 428 delivers digital audio signal transmission to the subscriber modem 432 on the second bidirectional digital bus 434. Modem 432 modulates the digital audio signal transmission in accordance with the selected transmission mode (for example, in accordance with the mode satellite transmission mode or terrestrial transmission) for receiving a modulated digital signal 436 transmission baseband frequencies. Signal 436 may include as the I (in-phase)and Q (quadrature) components. The processor 424 audio signal, the controller and the memory 428 and modem 432 together form the digital section of the band (CAPC) in BEADS 102.
Modem 432 supplies the digital signal 436 transmission base band frequency to the input 438 main band POPC 310. From input 438 of the main frequency band of the digital signal transmission base band frequency is fed to digital-to-analog Converter (DAC) 440. DAC 440 converts the digital signal 436 transmission baseband frequent the t in the analog signal transmission base band frequencies. DAC 440 delivers the analog signal transmission base band frequency to the mixer 442. The 442 mixer converts with increasing frequency analog signal transmission baseband frequencies in the if signal 312 of the transmission, on the basis of the reference signal a supplied to the mixer 442.
2. The direction of reception
In the direction of the reception combining amplifier with AGC 380 delivers the received if signal 381 to the mixer 446 in POPC 310. Mixer 446 converts to decrease the frequency of the received if signal 381 to receive the analog received signal baseband frequencies based on the reference signal 444b supplied to the mixer. Mixer 446 delivers the analog received signal baseband frequency for analog-to-digital Converter (ADC) 448. ADC 448 digitizes the analog received signal baseband frequency to generate a digital received signal 450 baseband frequencies. Signal 450 may include as the I (in-phase)and Q (quadrature) component. POPC 310 delivers the digital received signal 450 main frequency band to the subscriber's modem 432. Subscriber modem 432 demodulates the digital received signal 450 main frequency band to obtain a demodulated digital signal. Modem 432 delivers the demodulated digital signal to the controller and the memory 428 on a digital bus 434. Section 428 of the controller and p is mate delivers the demodulated digital signal processor 424 audio signal on a digital bus 430. The processor 424 audio signal converts the demodulated digital signal into an analog signal 452. The processor 424 audio signal takes the analog signal 452 to the loudspeaker 454.
3. Processor main frequency band
On fig.3b shows a more detailed view of the processor 310' main frequency bands used in the communication systems of the type mdcr and the world Cup or in the signal processing and useful for implementing embodiments of the present invention. On fig.3b subscriber modem 387' receives signals 450A and 450b data RX I and Q component, respectively, and outputs the signals a and 436b data TX I and Q component, respectively.
To transmit signals a and 436b are fed to the inputs of elements a and 440b DAC, respectively, which serves the analog output signals to the low pass filters and mixers a and 442b, respectively. Mixers a and 442b transform with rising frequency signals in the appropriate frequency FC and submit them to the inputs of adder 316 to obtain a summed differential output of the inverter signal 312 TX, which is further processed as shown on the drawings. Gazorazdelitel 458 is connected to receive the input signal from the if synthesizer TX for the input signal a synthesizer on the mixer a and input s synthesizer with a shift of 90° phase to another mixer 442b of D. the two mixers.
For processing of the FM signal of the switching element 441 is connected in series with the DAC 440b, transmits the analog signal to a filter and then to the if synthesizer TX for use as an analog base band frequency for frequency modulation.
For signal reception, the common if-signal 381 is input to a splitter 384, which provides input signals for each of the two mixers a and 446b for conversion with decreasing frequency and which, in turn, serves their respective analog output signals of the main frequency band to the low pass filters and analog-to-digital converters or elements a and 448b ADC, respectively. Gazorazdelitel 456 is connected to receive the input signal from the if synthesizer RX for the input signal 444b synthesizer on the mixer a and input 444d synthesizer with a shift of 90° phase to another mixer 446b. Both gazorazdelitel 456 and 458 can include the function "divide" to divide the input frequency by a factor of 2 or more, as needed, to generate the corresponding input of the frequency mixer according to the pre-selected output frequency of the corresponding synthesizer FC.
Elements a and 448b ADCS digitize the signals accordingly and produce a signal 450A data RX I (in-phase) with the other commercial and signal 450b data RX Q (quadrature) component, which is then processed subscriber modem as shown on the drawings.
4. The controller transceiver and the mode control
The subscriber can provide the flow of information and control commands mode on BUS 102 to configure the BUS to work in different operating modes (mentioned above and additionally described below), or these modes can be selected based on the preset information or the criteria supplied by the manufacturer or service provider. For example, the signal mode selection can be obtained from the manual input of the subscriber, where you select a specific mode, or as part of processing pre-selected or pre-stored commands or steps of the method, which causes the mode selection based on certain values or criteria, such as the current signal quality, service availability or opportunity cost, or the need for location information on a periodic basis. The subscriber or the provider submits such information about the mode control on the controller and the memory 428 (also referred to as the controller 428) interface 460 input/output (I/o). In response to information about the management regime, represented by the subscriber, the controller 428 appropriately configures the subscriber modem 432 and the channel is 214, 216, 224, 226 and 230 of the transceiver.
The controller 428 configures the transceiver channels using a variety of lines/control signals, collectively represented by bus 462 control mode of the transceiver, is connected between the controller 428 and channels of the transceiver. Bus 462 control mode transceiver sends a control signal selection switch on each of the switches 316, 400 and 370 routing signal. Therefore, the controller 428 can control these switches directions (routing) in accordance with the selected operating mode, thereby configuring an operating mode of the BEADS.
Bus 462 control mode transceiver also includes a line control power on and off to activate and dezaktywizacja sections of various channels of the transceiver in accordance with the control commands mode received through the interface 460 V/C.
The controller 428 also delivers the command frequency sources 417 and 418 signals to adjust accordingly the frequency of the reference signals 326 and 364. Command frequency setting can be enjoyed on the sources 417 and 418 of the signals using the bus control mode of the transceiver, or using a separate control bus configuration.
The controller 428 also manages the installation(establishing or increasing) and disconnection (dezaktywizacja or shutdown) satellite and ground-based call in accordance with commands and information of the subscriber, entered through the interface 460 V/C. Therefore, the controller 428 may perform Protocol processing of satellite and ground-based call necessary for the implementation of the establishment and disconnection of the call.
As mentioned above in connection with figure 2, the subscriber can configure the BUS 102 for at least one of the following operating modes:
1) mode satellite communication for communication with a satellite communication system that uses satellites 108;
2) mode analog ground connection for communication with the system analog ground connection;
3) mode of terrestrial digital communication for communication with a terrestrial digital communication; and
4) receive mode SHGs for receiving and processing signals from GSP-satellites and to determine the location of the BEADS through SHGs.
When the selected mode satellite communication (mode 1), the controller 468 configures the switch 316 routing FC transfer direction of the output signal of amplifier 314 FC with AGC on the exit path 318 (i.e., the switch 316 is configured so that it was in the position opposite to the position shown in figa). The switch 370 if reception is configured to direct signals from the input section 368 of the inverter on the output path 374 FC, as shown in figa.
When the selected mode analog terrestrial communication (mode 2), the controller 468 con is figuriruet switch 316 routing FC transfer direction of the output of the inverter signal amplifier 314 with AGC on the exit path 319 FC, as shown in figure 3. The switch 400 RF terrestrial reception is configured to direct signals at the input of the switch to the output path 402 RF and, thus, the analog sub-channel, as shown in figa. The switch 370 FC routing can be configured for directing the if signals from the tract 372 inverter receiving the output path 374 FC, but the gain may be equal to zero in this tract, as it does not need the digital signal. Alternatively, the switch 370 is configured so that it was in position between paths 368 and 372, so that was not selected either satellite or digital cellular mode.
When the selected mode of terrestrial digital communication (mode 3), the controller 468 configures the switch 316 FC routing of the transmission as shown in figa. On the other hand, the switch 400 RF terrestrial reception is configured to direct signals from the switch input to output path 404 RF and, thus, on digital sub-channel. The switch 370 FC routing is configured to receive the direction of FC-signalov from tract 372 inverter receiving the output path 374 FC (i.e. the switch 370 is configured so that it was in the position opposite to the position shown in figa).
When the selected receive mode SHG (mode 4), the controller 468 configures the switch 370 routing if reception direction is possible if the signals from path 372 inverter receiving the output path 374 FC (i.e. the switch 370 is configured so that it was in the position opposite to the position shown in figa). In addition, the controller 428 may deactivate the channels 214 and 216 of the transmission to reduce interference introduced in the SHG channel 230 transmission channels.
III. Embodiment of a satellite reception while receiving SHG
In the above-described BEADS 102 channel 230 receiving SHGs and satellite channel 216 reception, basically, are mutually exclusive way, because the switch 370 FC routing reception chooses from the two channels depending on the selected reception mode. 4 shows the block diagram of BEADS 470 in accordance with another alternative implementation, in which the channel 230 receiving SHGs and satellite channel 216 of the receiver can be operated simultaneously.
BEADS 470 similar BEADS 102 except that the received if signal 392 SHG served on PF 472 inverter receiving GSP instead of switch 370 FC routing. In BEADS 470 PF 472 inverter receiving GSP takes the filtered if signal SHGs switch inverter 474. The switch 474 FC also accept accept if-signal output PF 410. Therefore, the switch 474 routing FC selects either accept SHG signal or ground accept the if signal and supplies the selected signal to the amplifier 312 with AGC.
IV. Only satellite transceiver and GPS, the first version of the runtime
Figure 5 before the systematic block diagram of BEADS 500 in accordance with another variant of execution. BEADS 500 only includes satellite channels 214 and 216 transmission and reception and the channel 230 of the reception of SHGs. BEADS 500 similarly BEADS 102 except that it excludes the terrestrial channels 224 and 226 transmission and reception and related switches 316 and 370 routing transmission and reception. Thus, BEADS 500 is simpler, more compact, easier, less expensive and more power efficient than the above-described embodiments of the. Also BEADS 500 can simultaneously receive and process the SHG signals and reception of satellite communication.
Other differences between BEADS 500 BEADS 102 includes an amplifier 504 FC transmission, is connected between the amplifier 314 FC transmission with adjustable gain and PF inverter 320, and the source 506 reference signal. Source 506 reference signal may be a source of single-sideband signal, so as excluded channels terrestrial communications.
V. Only satellite transceiver and GPS, the second embodiment of the
Figure 6 presents a block diagram of BEADS 600 in accordance with still another option run. BUS 600 is similar BEADS 500 except that the combiner 604 power, instead of the amplifier 380 FC with AGC (see figure 5), combines the if signal 392 reception of SHGs formed by the mixer 390, with the if-signal 606 receiving satellite communications generated by the amplifier 326 FC reception. A combiner 604 power gives the volume of the United signal on total tract/section 608 of the inverter, which includes, in series, PF inverter 610 and receive the first and second amplifiers 612 and 614 if reception with AGC.
VI. Satellite method SHG
Figure 7 shows a sequence diagram of operations of an exemplary method 700 of simultaneous operation of BEADS (for example, BEADS 102, or other above-described embodiments of BEADS) in the satellite mode of communication, and in receive mode SHGs to quickly establish on the basis of SHGs location of the BEADS. This is referred to as "satellite SSE. The method 700 represents the number of steps of the method performed BEADS 102.
The subscriber BEADS 102 may initiate the method 700 by typing the query on satellite SHG (i.e. a request for location) in BEADS 102 using, for example, the interface 460 V/C. In the first stage 705 BEADS 102 receives a subscriber request on satellite SHGs.
Alternate, satellite SHGs can be selected automatically at periodic intervals in response to the command of the subscriber, as telecommunication services or in response to commands from the service provider as a special opportunity provided for one or more subscribers of the communication system.
In response to a request for satellite SHGs in the next step 710 BEADS 102 activates the satellite transceiver 212 to initiate satellite dial a predetermined number of access satellite communication system. B is With 102 transmits a request to establish a call, also referred to as sample access to the station 114 mates satellite system, using the signal line 112 "up". The predefined access number corresponds to the request for the location/positioning of the BEADS.
Station 114 mates accepts the request to establish a call from the BEADS 102 and identifies a pre-defined number associated with the request for the location of the BEADS. In response station 114 pairing establishes a call with BEADS 102. For example, station 114 mates sends a command on BUS 102 to use a predetermined channel return line using, for example, satellite paging channel.
Then the next step 715 BEADS 102 receives commands from the station of mate, establishing a satellite call to the signal line 110 "down".
If a satellite call, then the next step 720 BEADS 102 transmits to the station 114 pairing request feature satellite system, referred to as the wireless function of location (BFM). BPM satellite system calculates the approximate geographic location of the BEADS 102, based on factors such as known partner(s)through which the BEADS 102 establishes communication with the station 114 mates (or their location etc). Methods of performing such a location is described in the patent is U.S. No. 6107959, entitled "Position Determination Using One Low-Earth Orbit Satellite(Location using one low-earth-orbit satellite), which was issued August 22, 2000, and 6078284 entitled "Passive Position Determination Using Two Low-Earth Orbit Satellites" (Passive position determination using two low-earth orbit satellites), which was issued on June 20, 2000, and in the application for U.S. patent No. 08/723725 entitled "Unambiguous Position Determination Using Two Low-Earth Orbit Satellites" (Unambiguous position determination using two low-earth orbit satellites), which is incorporated herein by reference.
In response to the request BFM station 114 mates calls the function BFM. Function BFM returns to the station 114 mates approximate location of the BEADS 102. Station 114 mates passes approximate location on BUS 102 to facilitate positioning (GSP) message. Promoting SHGs message also includes a list of GSP-satellites, most likely located within sight of the BEADS 102, based on the approximate location of the BEADS 102. The list includes the information necessary for reception and processing of SHG signals from each listed GSP-companion.
Accordingly, the next step 725 BEADS 102 receives promoting SHGs message. In response to promoting SHGs message BUS 102 razryvayuthuyusya call. Then the BEADS 102 activates the GSP receiver 230 and initiates independent tracking of the location of SHGs to identify GSP-satellites within view of the BEADS based on the list of GSP-satellites in promoting SHGs message. It is also referred to as search, acquisition and tracking signal GSP satellites.
If location tracking SSE completed, the next step 730 BEADS 102 operates as a separate GSP receiver to determine the location of the BEADS on the basis of SHGs.
Search, capture and tracking signal GSP-satellites can take in the worst case more than ten minutes without promoting SHGs messages. However, in the present invention, the list of GSP-satellites and related information (e.g., ephemeris data) in promoting SHGs message allows the BEADS 102 significantly reduce this time to less than thirty seconds.
In an alternative embodiment, at step 705, the subscriber can request emergency service location using satellite call "E". During this call, BEADS 102 alternately switches between reception modes SHGs and satellite transmission in order to support a satellite call. So the way I similar to method 700 described above, except that satellite call is saved during the execution of str is both and at the same time, when the BEADS 102 determines the location based on the received signals GSP-satellites. BEADS 102 turns off the power receiving channel SHG in transmission to the satellite communication system, then power off the satellite transmission channel when receiving SHG signals. However, satellite receive channel all this time remains active. Thus the BEADS 102 is capable of tracing the location of SHGs and maintain the data line/speech with low-orbit satellites. During a call A BEADS continuously transmits to the station pairing for information about updating the location of the BEADS. Then the station pair can provide this information and the time (clock) information SHGs for BFM for fixing the positioning differential SHGs. This method can fix the location of the subscriber, the calling service emergency (i.e. subscriber, the subscriber terminal or wireless device) within a few meters for 90% of the time and can support data line/speech from the caller.
Some of the many applications of the present invention:
1. Dependent on the location of the billing (invoicing) for providers of services to low-orbit satellites.
2. Dependent on the location of the billing (invoicing) for producing the x service providers.
3. Personal location tracking and positioning regardless of the service area of the terrestrial network.
4. Global tracking and communication.
5. Service management and coordination of the fleet and the fleet on land and at sea.
6. Detection of unauthorized subscribers of telephone services.
7. Global optimization of networks for low-orbit satellite systems and terrestrial systems, including interoperability of systems.
8. Responding to the breach of personal security.
9. Large-scale search and rescue activities with regional and national service area during natural disasters.
10. Coordination of disaster after earthquakes, hurricanes, typhoons, fires and industrial accidents.
11. Technical assistance on the road at the continental scale.
12. The return of stolen vehicles.
13. All of the accident.
14. Rescue operations in emergencies in remote locations: mountains, deserts, jungles and the sea.
15. A small handheld device, the global personal communications.
16. Communication service for the urban area and rural areas in a single handheld device.
17. Device global data.
18. Positioning and tracking, when the BEADS 102 use is seen as a remote data collection terminal.
19. Military command, control, communication and tracking of troops in the field using a handheld mobile device.
20. Support operations of national intelligence, providing operational staff global communication, identification and extraction location.
21. Communication and support acting as agents of the Federal Bureau of investigation.
22. A communication service and location of the patrol police.
Although the above described various embodiments of the present invention, it is necessary to understand that they were presented as examples and not limitations. Specialists in this field of technology it is obvious that it can be made various changes in form and detail within the essence and scope of the invention.
The present invention has been described above with the aid of functional building blocks illustrating the characteristics of these functions and their relationship. The boundaries of these functional building blocks have been arbitrarily defined here for convenience of description. Alternative boundaries can be defined, provided that appropriately performs these functions and their relationship. Any such alternate boundaries, therefore, are within the scope and essence of the claimed invention. Special features : the STU in the art will understand, these functional building blocks can be performed by discrete components, specialized integrated circuits, processors executing appropriate software and the like or any combination thereof. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and its equivalents.
1. Multimode transceiver for wireless communication devices (BEADS)containing the first transmission channel for the formation of the first radio frequency (RF) signal transmission, compatible with the first communication system, the first receiving channel for receiving the first RF signal from the first communication system, the first receiving channel includes a first mixer for conversion with decreasing frequency of the first RF signal in the first signal intermediate frequency (if), on the basis of the first reference signal and the first if section following the first mixer and the second receiving channel for receiving a second RF signal from satellite positioning system and used to determine the location of the BEADS, while the second receive channel contains a second mixer for conversion with decreasing frequency of the second RF signal to the second inverter with the persecuted, on the basis of the second reference signal, and the second if section separate from the first section of the inverter following the second mixer, the first and second receiving channels share a common reception path.
2. The transceiver according to claim 1, in which the satellite positioning system is the global positioning system (GPS).
3. The transceiver according to claim 1, in which the first communication system is one of the following: a satellite network, a terrestrial cellular system and ground-based personal communication system.
4. The transceiver according to claim 1, in which the common reception path contains the total tract inverter receiving, with the first and second receiving channels additionally include a mechanism for routing the signal to the first and second if signals from the respective first and second separate sections of the inverter on the total tract if reception.
5. The transceiver according to claim 1, additionally containing a first local oscillator (lo (G) to generate the first reference signal with the first frequency and the second local oscillator (lo (G) to form a second reference signal with the second frequency, independent of the first frequency.
6. The transceiver according to claim 1, additionally containing a second transmission channel for the formation of the second RF signal transmission compatible with the second communication system, in which the first and second transmission channels together is sportsouth common transmission path.
7. The transceiver according to claim 6, in which the first channel contains a first if section for processing the first inverter signal and the second mixer, followed by the first section of the inverter, to convert with increasing frequency of the first if signal in the first RF signal, on the basis of the first reference signal.
8. The transceiver according to claim 7, in which the second transmission channel contains a second if section for processing the second inverter signal and a second mixer that is different from the first mixer following the second section of the inverter, to convert with increasing frequency of the second if signal to the second RF signal, on the basis of the second reference signal.
9. The transceiver of claim 8, in which the total transmission path contains the total tract FC transmission, and the first and second transmission channels include a common mechanism of signal is routed to the direction of the first and second if signals from the common path frequency transmission on the first and second separate mixers, respectively.
10. The transceiver according to claim 1, additionally containing a third receive channel for receiving the third RF signal from the second communication system.
11. The transceiver of claim 10, in which the third receive channel includes a mixer for conversion with decreasing frequency of the third RF signal into the if signal, on the basis of the first reference signal and the if section for receiving and printing handling is key if-signal, in which section of the inverter shares a common path inverter receiving at least one of the first and second receiving channels.
12. The transceiver of claim 10 in which the second communication system includes one or more terrestrial communications systems and capable to transmit the first signal modulated using the method of digital modulation, and a second signal modulated using the method of analog modulation, and the third receive channel includes a first sub-channel to receive the first signal modulated using the method of digital modulation, and the second sub-channel for receiving the second signal, modulated with the use of analog modulation method.
13. The transceiver in 12, optionally containing a routing mechanism for selective direction of the first signal on the first sub-channel and the second signal to the second sub-channel.
14. Quad-mode wireless communication device (BEADS)containing satellite transceiver that includes a satellite transmission channel and satellite receive channel for communication with the satellite communication system, ground the transceiver, which includes terrestrial transmission channel and terrestrial receive channel for communication with one of: a cellular system and a personal communication system (SPS), and satellite and terrestrial channels is peredachi share a common transmission path, and
the receive channel for the global positioning system (GPS) for receiving SHG signals from one or more SHG-satellites, which can be used to determine the location of the BEADS, and at least one satellite and terrestrial channels share a common reception path from the receive channel of SHGs.
15. BEADS by 14 in which ground the transceiver is designed for selective communication with one of: (a) cellular systems with multiple access and code division multiplexing (mdcr), and
(b) analog cellular system.
16. BEADS by 14 in which each of the satellite and terrestrial transmission channels contains a section intermediate frequency (if) to generate the if signal, and the mixer following the if section, for conversion with the increase of the intermediate frequency signal to a radio frequency (RF) signal based on the reference signal lo (G), and section FC satellite and terrestrial transmission channels share a common path frequency transmission.
17. BEADS on 14, in which each satellite and terrestrial TV reception includes a mixer for converting the lower frequency of the received RF signal into the if signal, on the basis of the first reference signal lo (G) and section intermediate frequency (if) for receiving and processing the if signal, if atomicly FC satellite and terrestrial channels share a common path if reception.
18. BEADS on 17, in which the receive channel SHG contains a mixer for conversion by lowering the frequency of the received RF signal SHGs in the if signal GSP, on the basis of the second reference signal G and the if section for receiving and processing the if signal GSP, and the section of the inverter receiving channel SHGs, satellite receive channel and a cell receiving channel share a common tract if-signal.
19. Method of determining location of wireless communication devices (BUS), and BUS includes a transceiver capable of communication with the satellite communication system and to receive signals from a satellite positioning system, showing the location of the BEADS containing (a) receiving an initial request to determine the location; (b) the transmission of a request to establish a call on the satellite communication system in response to the initial request, and the request to establish a call involves a predefined number of access to location services; (C) receiving information about the establishment of a call from a satellite communication system for establishing a call from the satellite system communication; (d) admission of facilitating the identification of the location of the message from the satellite communications system, and facilitating the identification of the location message based on the approximate location of the BEADS and includes information regarding asousa to satellites in a satellite positioning system; (e) the reception of signals from satellites in a satellite positioning system; and (f) determining the location of the BEADS based on the phase (s) and information to facilitate determining the location of the message.
20. The method according to claim 19, in which the satellite positioning system is the global positioning system, and step (e) includes receiving SHG signals from a variety of GSP satellites.
21. The method according to claim 19, additionally containing between steps (d) and (e) the stages of dezaktywizacja channel satellite transceiver and disconnection of the call with the satellite communication system.
22. The method according to claim 19, further containing the step of maintaining a call from the satellite communication system during the positioning of the BEADS on the stage (f).
23. Multimode transceiver for wireless communication devices (BEADS)containing means for forming a first radio frequency (RF) signal transmission, compatible with the first communication system, means for transmitting the first RF signal, means for receiving the first RF signal from the first communication system, means for forming a second radio frequency (RF) signal transmission compatible with a satellite positioning system, means for transmitting the second RF signal and means for receiving a second RF signal from a satellite positioning system and IP is elsuive to determine the location of the BEADS, while the first and second means for receiving share a common reception path.
24. The transceiver according to item 23, in which the satellite positioning system is the global positioning system (GPS).
25. The transceiver according to item 23, in which the first communication system is one of: a satellite network, a terrestrial cellular system and ground-based personal communication system.
26. The transceiver according to item 23, in which the first receive channel includes a tool for transformation with decreasing frequency of the first RF signal in the first signal intermediate frequency (if), on the basis of the first reference signal and the first if section following tool to convert with decreasing frequency of the first RF signal.
27. The transceiver on p, in which the second receive channel includes a second means for converting with decreasing frequency of the second RF signal to the second inverter signal on the basis of the second reference signal, and the second if section separate from the first section of the inverter following the second means for converting with decreasing frequency.
28. The transceiver according to item 27, in which the common reception path is the total tract inverter receiving, with the first and second means for converting with decreasing frequency include means for routing the first and second if signals is and from the respective first and second separate sections of the inverter on the total tract if reception.
29. The transceiver according to item 27, further containing means for forming a first reference signal with the first frequency and means for forming a second reference signal with the second frequency, independent of the first frequency.
30. The transceiver according to item 27, further containing a means for creating a second RF signal transmission compatible with the second communication system, and first and second means for creating RF transmission signals share a common transmission path.
31. The transceiver according to item 23, further containing means for receiving the third RF signal from the second communication system.
32. The transceiver according to item 30, in which the second communication system includes one or more terrestrial communications systems and capable to transmit the first signal modulated using the method of digital modulation, and a second signal modulated using the method of analog modulation, containing means for receiving a first signal modulated using the method of digital modulation, on the first subchannel and the means for receiving the second signal, modulated using the method of analog modulation on the second subchannel.
33. The transceiver on p additionally contains means for selective routing the first signal to the first sub-channel and the second is ignal on the second sub-channel.
34. The method of determining the location of at least one wireless communications device (BEADS), which includes a transceiver capable of communication with the satellite communication system and to receive signals from a satellite positioning system, showing the location of the BEADS containing the steps of receiving an initial request to determine the location; establishing a call over a satellite communication system in response to the initial request; receiving, facilitating the identification of the location of the message from the satellite communications system, and facilitating the identification of the location message based on the approximate location of the BEADS and includes information relating to satellites in a satellite positioning system; receiving signals from the satellites in the satellite the positioning system; and determine the location of the BEADS on the basis of satellite positioning systems and information to facilitate determining the location of the message.
35. The method according to clause 34, which referred to the initial request to the positioning is performed in response to manual input of the subscriber BEADS during the processing of pre-selected or pre-stored commands based on certain values or criteria provided by the manufacturer of the BEADS or service provider
36. The method according to p in which the subscriber BEADS requests emergency service location, and at the time of such request the above-mentioned BEADS alternately switches between the modes of reception of signals from the satellite positioning system and transmitting to a satellite in order to maintain a satellite call.
FIELD: mobile communication systems.
SUBSTANCE: method and device are disclosed, intended for assigning a resource in mobile communication system. In mobile communication system of next generation, based on IP, speech data of voice encoder between environment gate and base station controller are not concentrated into resource of certain voice encoder, but evenly assigned to resources of all voice encoders.
EFFECT: efficient assignment of resources in environment gate.
4 cl, 5 dwg, 8 tbl
FIELD: radio communications, possible use for transmitting and receiving error control information from control information in mobile communication system.
SUBSTANCE: method and device are characterized for conducting power control using control information of traffic channel in mobile communication system, which transfers traffic channel control information through control channel. Control information of traffic channel is selected at each time interval corresponding to each frame. Error detection information is generated to realize power control, if error occurs in at least one part of control information. Generated error detection information is encoded in a predetermined time interval together with control information of a predetermined time interval, and encoded information is transferred through the control channel.
EFFECT: maintained evenly spread probability of errors in control channel signal.
9 cl, 21 dwg
FIELD: methods for transmitting a frame to mobile station and structures of channel quality indicators including transition frame.
SUBSTANCE: frame for transition between cells/sectors has at least a determined first slot in beginning portion of frame, this determined first slot contains channel quality indication information; and at least a determined second slot in end portion of a frame, where this determined second slot contains information for transition between cells/sectors.
EFFECT: creation of a frame for commutation, creation of method for transmission of aforementioned frame, where both frame and method substantially reduce limitations and inconveniences of existing technologies.
3 cl, 20 dwg
FIELD: method and system meant for sanctioning access to user information.
SUBSTANCE: system includes first network object and second network object. First network object dispatches user information request to second network object. Second network object receives user request information, checks, whether first network object is sanctioned for receipt of requested information, and generates a response, sanctioning the request, if the first network object is sanctioned to receive information. The check may include comparison of first network object to allowed open user names of user, comparison of first network object to objects of network, identified in previous request, and comparison of first network object to application servers, do not belonging to third party service providers outside the network, to which the user is connected.
EFFECT: sanctioning of access to user information.
3 cl, 8 dwg
FIELD: radio engineering, possible use for finding location of user of mobile communication device.
SUBSTANCE: in accordance to the invention, generation of such an estimation algorithm based on a priori information is suggested, which provides optimal solution in average for whole service area of navigation system, where client equipment acts as the source of navigation signal. Location of client is determining on basis of measurements of delays and levels of user signal by several base stations.
EFFECT: increased precision when determining location of clients inside rooms due to additional usage of a priori information about possible location of client and probability of his presence in various areas within area of service of navigation system.
8 cl, 4 dwg
FIELD: electric communications, possible use for providing direct connections to officers of moving objects, associating clients of mobile objects with common use communication networks, performing phone talks and transferring various information and data via created communication channels.
SUBSTANCE: mobile communication and control device contains two radio operator panels, n client blocks, driver block, commutation equipment in composition of internal communication block, control block, channel commutation block, client commutation block, navigation station, two ultra-short-wave radio stations with antennas, short-wave radio station with antenna, block of antenna filters, satellite communication station with antenna system, selective call block, channel equipment, data transfer equipment, line input block with communication line from remote phone device, connecting lines from communication unit and long range communication lines connected to it and interconnected in a certain fashion.
EFFECT: expanded functional capabilities, increased efficiency of communication channel usage, increased communication range with simultaneously increased quality of service provided to clients.
2 cl, 2 dwg
FIELD: communication system.
SUBSTANCE: system contains receiver-transmitter, signal processing block, end block, transmitter disabling signal generator, key, power source, central station and a network of automatic phone stations.
EFFECT: increased efficiency of system without usage of additional resources, and also reduced consumption of energy by client station without substantial complication of structure.
FIELD: mobile communication systems.
SUBSTANCE: method and device are disclosed for determining spectrum spreading coefficient (SF) of physical level and number of physical channel bits to maintain composition of transport formats (TFC) of selected uplink channel during transfer of data through dedicated channel of uplink in mobile communication channel. Solving block for selecting parameters selects a bit size from acceptable physical channel bit sizes, which minimizes repeating of bits and does not require an additional physical channel. Therefore, hardware resources of receiving device are used efficiently.
EFFECT: improved determining of physical level transport parameters.
2 cl, 8 dwg
FIELD: radio communications.
SUBSTANCE: invention is realized due to measurement and combination of data not only from data transfer lines of "air to surface" channel, but also from radio-locators, means for processing radiolocation information and other additional information sources, positioned in various areas and for displaying processed information on one screen in form of a single pattern, characterizing general air situation above several air traffic control zones.
EFFECT: increased information capacity of information consumers due to processing of data from all sources of information about position of moving air objects and their characteristics, creation of combined picture concerning air situation in several air traffic control zones.
FIELD: methods for testing productivity of terminals and access stations in CDMA data systems (for example, of cdma2000 standard).
SUBSTANCE: in accordance to the invention, protocol and message structure is provided to support systematic testing of productivity of terminals and to guarantee compatibility of interfaces. Aforementioned structure contains the protocol of direct testing application for testing direct channels and the protocol of reverse testing application for testing reverse channels. Also, methods are suggested for: (1) testing various channel types (for example, traffic channels, and also auxiliary channels), (2) testing packet data transmissions, (3) "stability" support testing, (4) forced setting of some auxiliary channels, and (5) of collection, registration and description of various statistics, which may be used for selecting productivity metrics, such as traffic capacity and packet error coefficient.
EFFECT: realized check of productivity for all terminals and access stations in CDMA systems.
21 cl, 9 dwg, 22 tbl
FIELD: space engineering; operation of spacecraft flying in orbit of artificial earth satellite, but for geostationary orbit, which are stabilized by rotation along vertical axis, as well as ground reception points.
SUBSTANCE: system used for realization of this method includes emergency object transmitter, onboard equipment of spacecraft and ground equipment of reception point. Onboard equipment of spacecraft includes horizon sensor, receiving antenna, comparison unit, receiver, Doppler frequency meter, blocking oscillator, two AND gates, two rectifiers, pulse generator, pulse counter, switching circuit, magnetic memory, transmitter, transmitting antenna, modulating code shaper, RF generator and power amplifier. Ground equipment of reception point includes receiving antenna, RF amplifier, two mixers, standard frequency unit, phase doubler, three narrow-band filters, phase scale-of-two circuit, phase detector, Doppler frequency meter, computer and recording unit. Proposed method consists in search of such space position of space object by receiving antenna when Doppler frequency of received signal is equal to zero. Measurement at this moment of angle between mechanical axle of receiving antenna and horizon axis is carried out referring to onboard receiving unit.
EFFECT: extended functional capabilities; enhanced accuracy of determination of spacecraft orbit elements; reduction of time required for search of emergency object.
FIELD: controlling power consumed by space grouping of satellites as they pass shadow sections of orbits.
SUBSTANCE: proposed method includes evaluation of power consumed by each of airborne retransmitters installed on satellites, as well as disconnection of airborne retransmitters as soon as satellites enter shadow sections of orbits and their reconnection upon exit therefrom. In addition, time taken by each satellite to pass mentioned section, power consumed by each retransmitter, and total power consumed by retransmitters of each satellite at given section are evaluated before each satellite enters respective shadow section of orbit. Balance between power accumulated in each satellite and power consumed in shadow section of orbit is found. Satellites having time-intersecting shadow sections are grouped with those having positive and negative balance of power consumption as well as with satellites whose input power is balanced. Alternate satellites residing on illuminated sections of orbits are determined for negative-balance subgroup. Operating retransmitters are switched over to alternate satellites before each satellite subgroup starts passing shadow section to provide for balancing or positive balance of input power. In case of negative input power balance, power that can be borrowed from alternate satellites is evaluated and mentioned retransmitters are connected to them. Then alternate satellites are found in positive-balance satellite subgroup using above-described method.
EFFECT: enhanced reliability of communications.
1 cl, 3 dwg
FIELD: radio navigation aids, applicable in digital correlators of receivers of satellite radio navigation system (SPNS) signals, in particular, in digital correlators of receivers of the SPNS GLONASS (Russia) and GPS (USA) signals.
SUBSTANCE: the legitimate signal in the digital correlator is detected by the hardware, which makes it possible to relieve the load of the processor and use its released resources for solution of additional problems. The digital correlator has a commutator of the SPNS signals, processor, digital mixers, digital controllable carrier-frequency oscillator, units of digital demodulators, accumulating units, programmed delay line, control register, digital controllable code generator, reference code generator and a signal detector. The signal detector is made in the form of a square-law detector realizing the algorithm of computation of five points of the Fourier sixteen point discrete transformation with additional zeroes in the interval of one period of the, c/a code with a subsequent computation of the modules of the transformation results and their incoherent summation and comparison with a variable threshold, whose value is set up depending on the noise power and the number of the incoherent readout. The signal detector has a controller, multiplexer, complex mixer, coherent summation unit, module computation unit, incoherent summation unit, noise power estimation unit, signal presence estimation unit and a unit for determination of the frequency-time coordinates of the global maximum.
EFFECT: provided acceleration of the search and detection of signals.
2 cl, 6 dwg
FIELD: engineering of radio-systems for exchanging data, possible use for interference-protected information exchange between mobile airborne objects and ground complexes in "air to air" and "air to ground" channels.
SUBSTANCE: in accordance to the invention, in the device at transmitting side antenna polar pattern is induced onto polar pattern of receiving side antenna, relaying route is selected, current position and parameters of all airborne objects is determined for current time moment, extrapolation location points are computed for corresponding airborne objects during communication session being planned, mutual targeting of polar patterns of antennas of ground complex and the first (in the order of service) airborne object, second airborne object, etc., is performed, the objects being tracked during movement, data exchange is performed between corresponding objects of the system. After receipt confirmation is received, the procedure is repeated for second airborne object, etc. In ground complex and airborne objects picked for retransmission, operations of mutual targeting of polar pattern centers of UHF range antennas to appropriate objects and operations of tracking them during movement are performed.
EFFECT: increased interference protection and speed of transfer.
FIELD: communication systems, possible use for radio relaying of radio-television signals.
SUBSTANCE: in the method for aiming transmitting antenna of repeater at client station, which method includes aiming of receiving antenna of repeater at signal source by its rotation on basis of azimuth and elevation angle until signal capture, and then precise aiming of receiving antenna with usage of program aiming with correction by the signal being received, and also transmitting antenna of repeater is aimed at client station using calculated azimuth and elevation angle, before aiming of receiving antenna at signal source the antenna is turned along azimuth for an angle up to one hundred eighty degrees and for no less than three different azimuth angles, values of repeater error are measured relatively to horizon plane using angle sensor installed on the azimuth axis of receiving antenna. After that receiving antenna is turned along azimuth until signal capture, during that simultaneously in accordance with found parameters elevation angle of receiving antenna is changed, then in the mode of precise aiming of receiving antenna at signal source azimuth is successively increased and decreased by equal angles, both signal values read in these positions are used for more precise detection of signal source position azimuth. Then receiving antenna is turned along azimuth for angle corresponding to client station angle, and then receiving antenna is turned along azimuth for one hundred eighty degrees, in both positions repeater error relatively to horizon plane is measured by means of angle sensor. After that transmitting antenna is aimed at client station using computed azimuth and elevation angle, during azimuth aiming, precise position of signal source is used, and during elevation aiming, precise value of repeater error relatively to horizon plane is used.
EFFECT: increased precision of aiming of transmitting antenna of repeater, prevented usage of additional equipment for aiming the transmitting antenna, simplified operation.
FIELD: radio engineering, possible use for relaying signals in satellite communication systems with multi-access.
SUBSTANCE: relay contains N receiving channels, each one of which includes a receiving antenna, input amplifier, matching device, detector, threshold device, and also common blocks: activity analysis block, commutator, transmitter and transmitting antenna.
EFFECT: increased efficiency of usage of throughput of P-ALOHA protocol due to realization of servicing discipline, making it possible to block packets received via other beams when mono-channel is busy.
7 dwg, 1 ann
FIELD: space engineering; spacecraft flying in earth artificial satellite orbit, but for geostationary orbit stabilized by rotation along vertical axis.
SUBSTANCE: system used for realization of this method includes spacecraft case, infra-red horizon pulse sensor, receiving antenna, comparison unit, receiver, Doppler frequency meter, biased blocking oscillator, two AND gates, two rectifiers, pulse generator, pulse counter, switching circuit, magnetic storage, transmitter, transmitting antenna, onboard timing device, onboard master oscillator and emergency object transmitter. Doppler frequency meter includes 90-deg phase shifter, two mixers, two difference frequency amplifiers, 180-deg phase inverter, two AND gates and reversible counter. Frequency of received oscillations is preliminarily reduced in two processing channels.
EFFECT: enhanced accuracy of determination of coordinates due to accurate measurement of minor magnitudes of Doppler frequency and recording its zero magnitude.
FIELD: satellite systems.
SUBSTANCE: proposed system that can be used as orbital system forming global radio-navigation field for marine, ground, low-, and high-altitude orbital space users at a time as well as for exchanging command information with allocated circle of users, including space vehicles flying on near-earth orbits has navigation system satellites provided with intersatellite communication equipment, navigation information transfer equipment, and equipment transferring telemetering information to ground command-measuring systems incorporating transceiving equipment transferring navigation, telemetering, and command information to satellites; ground users have navigation information receivers; newly introduced in each ground command-measuring system are code command inputting equipment and acknowledgement signal receiving equipment connected to transceiving equipment; introduced in satellites are acknowledgement signal receivers connected to transceiving equipment; code command allocating devices connected to navigation information receivers and acknowledgement signal transmitters are installed on some users. Radio field produced by positioning system and its relaying capabilities are used not only for locating users in navigation but also to exchange command-program information between ground control center and allocated user.
EFFECT: enlarged functional capabilities.
FIELD: the invention refers to radio technique and may be used in global mobile systems of communication applying cellular technology.
SUBSTANCE: the technical result is increasing reliability without essential complication of the construction of the system. For this the system has a block of transceivers, a commutation matrix, a block of antennas, a block of detecting an accidental transceiver, a control block and a block of variants of commutation. At that in such a system there is possibility of replacement of the accidental transceiver of one of the central cellular cell with a transceiver of one of the edge cellular cells without essential complication of the construction.
EFFECT: increases reliability of the system.
FIELD: communications engineering, possible use in cell phone communications.
SUBSTANCE: in accordance to invention, by means of GPS relay of vehicle, activated in response to signal, incoming from control center via individual radio information channel, data about position received from satellites are received and transferred, and information about position is transferred by means of control channel to control center, and then the data and information are transferred to user of mobile cell phone. System may also be used by dispatchers in car parks.
EFFECT: possible usage of one portable cell phone only for voice communications by means of voice radio channel with cell phone network control center for requesting information or data about position and other services.
2 cl, 1 dwg
FIELD: communications engineering.
SUBSTANCE: proposed system has user terminal, gateway, and plurality of beam sources radiating plurality of beams, communication line between user terminal and gateway being set for one or more beams. Proposed method is based on protocol of message exchange between gateway and user. Depending on messages sent from user to gateway, preferably on pre-chosen periodic basis, gateway determines most suited beam or beams to be transferred to user. Messages sent from user to gateway incorporate values which are, essentially, beam intensities measured at user's. Gateway uses beam intensities measured at user's to choose those of them suited to given user. Beams to be used are those capable of reducing rate of call failure and ensuring desired separation level of beam sources.
EFFECT: reduced rate of call failure in multibeam communication system.
20 cl, 27 dwg