The radio communications device and the system includes means for determining the location

 

The claimed device, method and system provide the ability to accurately determine the location of the device radio without having to run the device for a long signal processing or calculations. The radio converts the frequency signal of the location from the start frequency to the frequency of the standard communication channel and transmits the signal with the frequency converted to the base station in the normal way. The receiver location associated with the base station receives the signal location and determines the location of the device of the radio signal to locate. Achievable technical result is to simplify signal processing. 3 S. and 17 C.p. f-crystals, 3 ill.

The present invention relates in General to determine the location of wireless communications devices, especially when the radio communications device is located in a remote area. More specifically, the present invention provides a method, device and system, which includes SGP (global positioning system) in the communication system.

PRIOR art the Development and improvement of radio services is audiosvyazi, applies to the determination of the physical location of the device. May be the case when it is necessary to determine the location of the device radio for a number of purposes, for example, when there is reason to assume that the subscriber associated with the device is in an emergency situation, or when the device is entrusted to an unworthy person. The solution to this problem should be carefully considered taking into account constraints on cost, size and power consumption of radio communication systems and devices. Additionally, there is the problem, when the radio communications device is located in a remote area, such as inside a building.

One of the proposed solutions to determine the location of the device radio is to use a radio communications device as a relay device, transmitting back the signal to locate the set of base stations. Delay in transferred back signal is used to determine the distance between the radio communications device and each of the series of base stations. The location of the device may then be determined from the locations of base stations and certain distances. However, it is difficult to measure detention is trudnodostupnie area.

The second proposed solution is based on the well known satellite of the global positioning system (EGR, GPS) with a built-in receiver traverses in the radio communications device. In the system of the EGR device, the location of which should be carried out (in this case, a radio communications device, but more often ship, airplane, truck, and so on), equipped with a receiver EGR. The receiver SSA can determine its location on the earth's surface with an accuracy of approximately 46 m on the basis of signals transmitted to the receiver EGR companion. During operation, the receiver SGP receives the encoded time signal location from the first satellite EGR. The receiver determines how long it takes the signal location to reach earth, by comparing the transmission time (from the satellite) with the time of his coming (in the receiver). Based on this time difference and taking the transmission rate, for example, approximately 299338 km/s, the receiver calculates the distance to the first satellite (for example, approximately 20921,5 km). On the basis of pre-programmed information about the orbit of the satellite receiver can determine where in space the satellite at the time of sending the signal, and that with the radius of the satellite is equal to a specific distance (in this example 20921,5 km). The receiver repeats this process using the signals to determine the location from additional satellites EGR, and, finally, determines on the basis of the points of intersection of the resulting spheres where it is located.

Unfortunately, the typical receiver CST more than a typical radio communications device. Even if the receiver EGR reduced in size, the embedding of the receiver traverses in the radio communications device can significantly affect the size of the device. Further, known receivers EGR usually do not have enough capacity efficiency in locating in remote areas, such as inside a building.

Any solution to the problem of locating devices radio, which includes a significant number of transactions on signal processing in a radio communications device, will strongly affect the cost of the device, power consumption and/or efficiency.

Therefore, you must be able to accurately determine the location of the device Radiocommunication, especially when the device is placed in hard-to-reach areas, such as inside a building, in a way that does not significantly VL is BRETANIA the Present invention overcomes the above described problems and provides other advantages, offering communication system, device and method for determining the location of the device Radiocommunication not have a significant impact directly on the device. According to the best options for the implementation of the radio communications device can communicate with the base station over the communication channel, is supplied schema location for signal reception location (for example, the signal CHG), converting the received signal of the first frequency into a signal of a second frequency and transmitting the signal to determine the location with the frequency converted by the communication channel to the receiver location. The receiver location is preferably the receiver EGR associated with the base station.

According to the best options for implementing the method of the present invention the signal location (e.g., EGR) is passed from the first frequency from the location system, the radio communications device. Signal location then transform of the signal of the first frequency into a signal of a second frequency through the device radio communications and signal location with the frequency converted is passed from the second often

To provide the best locating device Radiocommunication, which should be implemented for the case when the device is in remote areas, and to guarantee the correct reception of the signal location, the signal transmission of the location with the frequency converted may occur with a power level greater than the power level of communication signals, which are usually exchanged between the radio communications device and the management station. Alternative or in addition to, this particular control station, connected to the receiver location, may temporarily suspend the exchange with other radio communications on the second frequency in response to reception of the signal with the frequency converted signal or a predecessor transmitted by the radio communications device to transmit a signal from the frequency converted.

The present invention allows to determine the location of the device Radiocommunication without significant impact on the size, cost, efficiency or power consumption of the device radio.

BRIEF DESCRIPTION of DRAWINGS the Present invention can more fully be understood from the following detail the .1 is a block diagram of a wireless system in accordance with the embodiment of the present invention; Fig. 2 is a block diagram of the transmitter device Radiocommunication in accordance with the embodiment of the present invention; and Fig. 3 is a sequence of operations that describes the steps to determine the location of radio communication in accordance with the embodiment of the present invention.

DETAILED DESCRIPTION of PREFERRED embodiments Fig. 1 depicts the best communication system according to the present invention. The system includes a variety of mobile telecommunications terminal, such as mobile terminal 10, and the set of base stations such as base station 12. The mobile terminal 10 exchanges communication signals with the base station 12 in a known manner. With the purpose of explaining the invention will be described with the assumption that the mobile terminal 10 and the base station 12 to exchange signals according to the principles of multiple access code division multiplexing (CDMA, MDCRC). Signals MDCRC have a bandwidth of approximately 1.2 MHz, and the signals SSA have a bandwidth of approximately 1 MHz. However, it should be noted that the invention is not limited to systems MDCRC and principles of the invention can be easily adapted to other tepania, which in this example is the EGR system. The EGR system includes satellites CST 14 and one or more receivers 16 CST. Each receiver 16 CST preferably associated with the base station 12 either directly or via an optional feature of the connection 18. Each receiver EGR preferably includes at least two complete receiver EGR, one of which receives signals from the mobile terminal 10 via the base station 12, and the other receives signals SSA directly from the satellites 14. You can use only one receiver CST and to provide the multiplexing between the two functions. However, this configuration requires that the data processor has made a correction for temporal shifts between dimensions.

During operation, when it is necessary to identify the location of the mobile terminal 10, for example, when associated with the mobile terminal 10, the subscriber has sent a voice message or data indicating that the subscriber is in an emergency situation, one or more satellites CST 14 transmit the signal to determine the location of the EGR at a frequency of 1575.42 MHz. This signal is received in the mobile terminal 10, which converts the frequency of the EGR signal from it the signal to EGR with the frequency converted to the base station 12. Diagram of frequency conversion of the mobile terminal described in more detail below with reference to Fig.2. The base station 12 transmits a signal to EGR with the frequency converted to the associated receiver CST 16 either directly or via an optional feature of the connection 18. Tool connection 18 converts the signal to EGR with the frequency converted from the frequency channel MDCRC in the original signal frequency and can be simply inverted version of the schema frequency conversion of the mobile terminal 10. If no connection 18 is not used, the receiver CST 16 may be configured to receive signals directly on MDCRC channel. The receiver 16 CST uses the signal CHG adopted through the base station 12, preferably together with signals CHG adopted from other satellites SSA to determine the location of the mobile terminal.

It should be noted that, if the receiver 16 includes two separate receiver EGR, can be performed two additional tasks. First, one of the two receivers operating in normal mode with normal signal levels EGR, can perform all the functions necessary for the correct location, that is to demodulate the signal the signal from the remote device 10, to have a relatively long integration times. A long integration time can prevent the second receiver to perform demodulation of the data, but to enable the second receiver to synchronize the code in conditions with very weak signals (interference), at the same time having access to the rest of the information needed to locate. Secondly, this design allows the system to implement differential EGR, the method of removing the differential errors. According to the differential predicted EGR with EGR location formed by the first receiver, compared with its pre-and accurately studied by location to determine the correction factors. Certain correction factors are then applied to determining the location data generated by the second receiver to determine the location of the device radio.

Fig. 2 is a block diagram of the transmitter of the best devices of the radio communication according to the present invention. Part of the transmitter includes a channel definition schema location and channel scheme of the transmitter. Channel definition schema location includes but is ntennas 20, and the mixer 24 is connected to receive the filtered output signal from filter 22 and the signal generated by the generator 26 and to output an intermediate frequency (which is equal to approximately the same frequency as the output signal source 34, described below). The transmitter additionally includes a second filter 28 connected to the output of the mixer 24 for filtering the intermediate frequency signal. The amplifier 30 is connected to the filter 28 and amplifies the signal with the filtered intermediate frequency. The signal from the filtered intermediate frequency is given as one input signal to the switch 32.

The channel circuit of the transmitter includes a source 34 for supplying the modulated intermediate signal connection, which transmits voice messages, data or the management information that must be transferred from the device to the radio communication to the base station. The modulated intermediate signal has essentially the same frequency as the intermediate frequency signal issued by the mixer 24. Source 34 delivers smart communication signal as a second input signal to the switch 32. The state of switch 32, which may be administered or subscriber (naprelan management sent to the device, the radio base station 12), determines will pass if the transmitter signal generated by the channel location or channel scheme of the transmitter. The output signal of the switch 32 is thrown in as a first input to the second mixer 36, which mixes the output signal of the switch 32 with the second signal generator 38. The mixer 36 produces the desired signal, which in this example is a communication signal MDCRC frequency communication channel MDCRC. The transmission signals are then filtered by the filter 40, increase the amplifier 42 and passed to the control station via the antenna of the transmitter 44. It should be noted that the channel circuits of the transmitter (Fig. 2) is essentially identical to the channel transmitter conventional device radio.

During operation of the transmitter in the initial state transmits communication signals (that is, voice messages, data or control signals) to one or more base stations on channel transmitter. In this initial state, the switch 32 is set to receive the output signal source 34 and to issue an output signal source 34 to the second mixer 36. If the device is in the mode location, the signal ODA is of the location of the take and convert its frequency elements 22-30, and the state of the switch 32 change from the initial state so that the switch 32 generates a signal of the location with the intermediate frequency to the second mixer 36. In this mode, locate the second mixer 36 converts the frequency of the processed signal location from an intermediate frequency (frequency of the intermediate frequency signal issued by the mixer 26, having a bandwidth of approximately 1 MHz) to the second frequency suitable for transmission over the communication channel (for example, the communication channel MDCRC having a bandwidth of approximately 1.2 MHz). In this mode, locate the connection established between the radio communications device and the base station, temporarily interrupted.

In a radio communications device, comprising the pattern shown in Fig.2, assuming an appropriate amplification provided by the amplifier 30, the transmitter radiates a signal location, essentially unchanged, except that it has an excellent frequency to one or more base stations. The first transmitter may send a signal-predecessor to specify the base station that will send a signal identifying the nick CST 16, to determine the location of the radio. The receiver location can be adjusted to the frequency of the radio channel instead of the original signal frequency location, or you may receive a signal of the location to its original frequency after the scheme, such as the means of connection 18 (Fig.1) is inversely converts the signal to determine the location of the signal with the frequency of the communication channel in the signal source frequency. It should be noted that the radio communications device having the pattern shown in Fig.2, gives the opportunity to include in the device, the means for determining the location without having to perform signal processing, detection or calculation of the location in the device itself.

Fig.3 depicts the sequence of operations that describes how to locate the device Radiocommunication in accordance with the present invention. At step 100 the relationship set between the radio communications device and the base station. When this connection is established, the communication signals (that is, voice messages, data or control signals) are transmitted in the usual way between the device and the base station. At step 102, the device determines if adopted on a device over the communication channel. If not, the process returns to step 100 and maintained regular communication channel. If the signal location was received by the radio communications device, the device at step 104 changes the modes and the switch 32 selects the channel definition schema location instead of the standard channel transmitter. The result of this change in the normal communication is suspended. At step 106, the signal locating with the frequency converted is passed from device radio to the base station. After signal transmission location completed (giving the opportunity to make appropriate calculations of the location that you want to perform receiver location), the process returns to step 100, at which restore normal communication.

As is evident from the preceding description, the present invention provides a method, system and device for locating devices in the communication system. The invention is particularly advantageous that the device itself is not required to perform significant functions of signal processing.

While the preceding description contains many details and specific the invention, and is included simply to illustrate. For professionals, many modifications of the above-described examples are obvious, without separation from the volume and shape of the invention, which is defined by the following claims and allowable equivalents.

Claims

1. The method of determining the location of the device Radiocommunication containing phases, which transmit the signal location at the first frequency from the location system, the radio communications device, switch the channel of a transmitter in a radio communications device from the first channel of the transmitter, in which the radio communications device capable of transmitting communication signals to one or more control stations at the second frequency at the second channel of the transmitter, in which the radio communications device capable of converting a signal of the location with the first frequency into a signal of a second frequency, convert the signal to determine the location with the first frequency into a signal of a second frequency, transmit the converted signal location at the second frequency to one or more receivers location configured on the second frequency, and to determine one or more receivers determine the ing the location is a satellite global positioning system (EGR), signal location signal CHG, and the receiver location receiver EGR.

3. The method according to p. 1, in which the receiver location associated with the one or more control stations.

4. The method according to p. 1, further comprising stages on which the filtered signal to determine the location of the transform with decreasing frequency of the filtered signal to determine the location, filtered converted to a lower frequency signal, and amplify converted to a lower frequency signal to the phase transformation.

5. The method according to p. 1, in which the first frequency is approximately equal to 1575.42 MHz and the second frequency is a frequency of mobile phone.

6. The method according to p. 5, in which the frequency of mobile phone is a frequency channel MDCRC.

7. The method according to p. 1, in which transmitting signals perform communication with the first power level, and the signal transmission of the location with the frequency converted perform with a second power level greater than the first power level.

8. The method according to p. 3, additionally containing a stage on which to transmit the transmission signal location with preobrazovaniem or more receivers to determine location, that will signal transmission location, and suspended in one or more control stations communicate with other devices in the radio communication to the second frequency.

9. The method according to p. 1, according to which there are at least two receiver location, and the step of determining performed by calculating the location of the first receiver location, comparing the calculated location with the known location of the first receiver location to determine the coefficients of error correction, and locating device of the radio communication with the second receiver location using specific coefficients of error correction.

10. The radio communications device containing a radio for communication with one or more control stations, one or more communication channels, and means for determining the location for signal reception location from the transmitter location to the first frequency, and communication with one or more receivers of the location associated with the one or more control stations, one or more communication channels, in which cf is the unit radio channel of the first transmitter, on which the radio communications device capable of transmitting communication signals to one or more control stations on the second frequency channel of the second transmitter, in which the radio communications device capable of converting the signal to determine the location with the first frequency into a signal of a second frequency.

11. The device according to p. 10, in which the means for determining the location includes means for converting a signal of the location with the first frequency into a signal of a second frequency for communication based on one or more communication channels.

12. The device according to p. 10, in which the signal location is a signal to EGR, receivers locating receivers EGR, and the transmitter location - EGR companion.

13. The device according to p. 11, in which the first frequency is approximately equal to 1575.42 MHz, and one or more communication channels are communication channels MDCRC.

14. The device according to p. 10, in which the device transmits a signal, the precursor to the connection with the receiver location, and the signal-predecessor forcing each control station associated with the receiver location, which take the signal predecessor to pause is associated with the control stations with the first power level, and communicates with a receiver location with the second power level greater than the first power level.

16. Communication system containing one or more control stations associated with one or more wireless communications devices, each of the radio communications device capable of exchanging communication signals with one or more control stations, one or more communication channels, and one or more transmitter location, providing the transmission signal to determine the location on the device radio frequency locating one or more receiver location associated with the one or more control station capable of receiving options signal location with the frequency converted from the radio communication devices, and to determine the location of the device Radiocommunication based on option (signal) with the frequency converted, in which the radio communications device includes a switching means for switching a channel of a transmitter in a radio communications device from the first channel of the transmitter, in which the radio communications device capable of transmitting communication signals to one or more control stations at the first frequency is of these sites have of the signal with the frequency of the locating signal from the first frequency.

17. The system under item 16, in which the frequency of the location is approximately equal to 1575.42 MHz.

18. The system under item 16, in which the variant with the converted frequency is the frequency of one of the communication channels.

19. System on p. 18 which version of the signal with the frequency converted transmit with a power level greater than the power level of communication signals.

20. The system under item 16, in which each control station, connected to the receiver location, suspends communication with the radio communication devices that communicate on the same channel as variant signal location with the frequency converted, in response to reception by the receiver of the location choices of signal location with the frequency converted.

 

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