Pseudo-random sequence mapping in wireless communication

FIELD: information technology.

SUBSTANCE: systems and methodologies are described, which facilitate scrambling of downlink reference signals utilising a pseudo-random sequence (PRS) corresponding to a primary synchronisation code (PSC) and secondary synchronisation code (SSC) combination. Use of the combination allows for orthogonal sequencing to be removed from the scrambling. This can be beneficial, for example, where resources required for the orthogonalisation of the reference signal outweigh the benefit of utilising the orthogonal sequences. In such scenarios, selective scrambling can be utilised such that the orthogonal sequence or instead the PSC/SSC combination can be provided to efficiently use advantages of both mechanisms in the given scenarios.

EFFECT: increased noise immunity.

45 cl, 11 dwg

 

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of provisional patent application U.S. serial No. 60/942,201, entitled "A METHOD AND APPARATUS FOR PSEUDO-RANDOM SEQUENCE (PRS) MAPPING FOR LTE", which was filed on June 5, 2007, and provisional patent application serial No. 60/945,073, entitled "METHOD AND APPARATUS FOR PSEUDO-RANDOM SEQUENCE (PRS) MAPPING FOR LTE", which was filed on June 19, 2007 All contents of the aforementioned applications is included in this document by reference.

The technical field

The following description generally relates to wireless communications, and more particularly to the conversion of the pseudo-random sequence for communications physical layer.

The level of technology

Wireless communication systems are widely used to provide various types of communication content such as, for example, speech data, and so forth. Typical wireless communication systems may be systems of collective access, allowing support of sharing information with multiple users by sharing available system resources (e.g., bandwidth, transmit power, ...). Examples of such systems shared access can include a system of collective access code division multiple access (CDMA)systems, multiple access with time razdelnyanskaya (TDMA), the system of collective access channel separation frequency (FDMA)systems, multiple access orthogonal frequency division multiplexing (OFDMA) and similar. Moreover, the systems can conform to specifications such as Project Third Generation Partnership (3GPP), long term evolution (LTE) of 3GPP, ultra-wideband mobile communications (UMB), etc.

Typically, the wireless communication system of collective access can promote the exchange of information for multiple mobile devices. Each mobile device may communicate with one or more base stations via transmissions on forward and reverse links. Direct link (or downward communication refers to the communication line from base stations to mobile devices, and the reverse link (or upward communication refers to the communication line from mobile devices to base stations. Moreover, communication between mobile devices and base stations can be installed with systems with a single input and single output (SISO)systems with many inputs and one output (MISO)systems with many inputs and many outputs (MIMO), and so on. Moreover, mobile devices can communicate with other mobile devices (and/or base station with other base stations) in confit is raziah peer-to-peer wireless network.

The MIMO system is usually used several (NT) transmit antennas and multiple (NR) receiving antennas for data transmission. The antenna can be treated as base stations and mobile devices in one example, allowing bidirectional communication between devices in a wireless network. Transmission over multiple antennas sometimes scribblenauts, to allow independent connection from a number of hundred on antennas. Before this was achieved by using a pseudo-random signal, which is random on a number of sites, and the orthogonal sequence (OS) of complex numbers used for orthogonalization of the reference signals from different sectors in the same base station. However, when performing communication with an extended cyclic prefix (CP), for example, to account for the far echoes in some environments), it is assumed that the communication channels become more selective in frequency, resulting in a significant loss of orthogonality of orthogonal sequences at the receiver.

The INVENTION

The following is the simplified essence of the one or more embodiments to provide a basic understanding of such embodiments. This entity is not comprehensive, overall view of all p is ideologeme of embodiments and is not intended nor to establish key or critical elements of all embodiments, neither to delineate the scope of any or all embodiments. Its sole purpose is to present some ideas of one or more embodiments in a simplified form as a prelude to the more detailed description that is presented later.

In accordance with one or more implementation options and their corresponding disclosure, various features are described with reference to facilitate the provision of scrambling for wireless communication for a number of hundred without using an orthogonal sequence (OS), or, at least, not for some subbarow communication based, at least partially, their cyclic prefix (CP). In one example, the scrambling may be implemented using a pair of synchronization codes containing a primary synchronization code (PSC), which can have varying values for reuse, in contrast to the traditional PSC and secondary synchronization code (SSC), which is converted to a pseudo-random signal. The combination of the PSC/SSC identifies the honeycomb and directly converted to the sequence used for scrambling the transmission of information from the cell.

In accordance with related features, is a way of interpreting the reference signal downlink in the ti wireless. The method may include receiving a scrambled reference signal downlink from the transmitter and determining a pseudo-random sequence based at least in part, the received primary and secondary synchronization codes. The method may also include diskriminirovaniya part subbarow reference signal downlink in accordance with a pseudorandom sequence and a certain length of cyclic prefix for one or more of the parts subbarow.

Another feature relates to the wireless device. The wireless device may include at least one processor configured to determine the length of the cyclic prefix of one or more subbarow reference signal downlink and selection diskriminirovaniya based, at least partially, the length of the cyclic prefix. The wireless device may also include a storage device that is connected to at least one processor.

Another feature relates to the wireless communication device, which receives and interprets the reference signals downlink. The wireless communication may include means for receiving a scrambled reference signal downlink from peredach the ka and the means for the Association of pseudo-random sequences, at least with primary and secondary code synchronization reference signal of the downlink. The wireless device may further include means for diskriminirovaniya part of the reference signal downlink in accordance with a pseudorandom sequence.

Another feature relates to a computer program product, which may contain machine-readable medium that includes code for instructing at least one computer to receive scrambled reference signal downlink from the transmitter. Machine-readable medium can also include code that directs at least one computer to determine a pseudo-random sequence with at least primary and secondary synchronization code. In addition, machine-readable medium may include code that directs at least one computer to descrambling part of the reference signal downlink in accordance with a pseudorandom sequence and a certain length of cyclic prefix for one or more of the parts subbarow.

In accordance with an additional feature is provided a method of transmitting reference signal downlink in a wireless communication network. The method includes the formation of the W reference signal downlink, contains primary and secondary synchronization codes. The method further includes scrambled reference signal downlink based at least in part, a pseudo-random sequence corresponding to the combination of primary and secondary synchronization codes, and transmission of the scrambled reference signal downlink.

Another feature relates to the wireless device. The wireless device may include at least one processor configured to obtain a pseudo-random sequence corresponding to the selected combination of primary and secondary synchronization code, and scrambling reference signal downlink using a pseudo-random sequence. The wireless device may also include a storage device that is connected to at least one processor.

Another feature relates to the device for wireless communication of the scrambled reference signals downlink in a wireless communication network. The wireless communication may include means for forming a reference signal downlink containing primary and secondary synchronization codes. The wireless device may optionally include the tool for scrambling reference signal downlink on the basis of, at least part of the pseudo-random sequence corresponding to the combination of primary and secondary synchronization codes.

Another feature relates to a computer program product, which can have a machine-readable medium that includes code for instructing at least one computer to generate the reference signal downlink containing primary and secondary synchronization codes. In addition, machine-readable medium may include code that directs at least one computer to scramble a reference signal of the downlink based at least in part, a pseudo-random sequence corresponding to the combination of primary and secondary synchronization codes.

To accomplish the above and related objectives, one or more embodiments include the signs, is fully described below and separately indicated in the claims. The following description and the attached drawings detail certain explanatory features of one or more embodiments. These features, however, indicate only some of the various ways that can be used the principles of various embodiments, and the described embodiments of intended for the making of all such features and their equivalents.

BRIEF DESCRIPTION of DRAWINGS

Figure 1 - illustration of a wireless communication system in accordance with various features described in this document.

Figure 2 - illustration of an example communication device for use in a wireless environment.

Figure 3 - illustration of an exemplary wireless communication system that performs transmission of the scrambled reference signals downlink.

Figure 4 illustrates an exemplary methodology that facilitates the transmission of scrambled reference signals downlink.

Figure 5 illustrates an exemplary methodology that facilitates the interpretation of the scrambled reference signals downlink.

6 illustrates an exemplary methodology that facilitates the interpretation of the reference signals on the basis of the cyclic prefix.

7 is an illustration of an exemplary mobile device that facilitates the interpretation of the scrambled reference signals.

Fig - illustration of an exemplary system that facilitates the transmission of reference signals downlink.

Figure 9 - illustration of an example wireless network environment that can be used in combination with various systems and methods described in this document.

Figure 10 - illustration of an exemplary system that descramble scrambled reference signals.

IG - illustration of an exemplary system that scramblase reference signals downlink.

DETAILED DESCRIPTION

Various embodiments of now described with reference to the drawings, in which identical reference numbers are used to refer to the same elements throughout the description. In the following description, for purposes of explanation sets forth numerous specific details to provide a thorough understanding of one or more embodiments. However, it may be obvious that such an option(s) can be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagrams in order to facilitate describing one or more embodiments.

When used in this application, the terms "component," "module," "system" and the like are intended to refer to associated with the use of a computer object, any hardware, firmware, a combination of hardware and software, software, or software in the course of execution. For example, a component may be, but is not limited to running on the CPU process, a processor, an object, an executable, a thread of execution, a program and/and and the computer. As an illustration, and the application running on the computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component may reside on a single computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having recorded thereon various data structures. Components can communicate via local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component communicates with another component in a local system, distributed system and/or network, such as the Internet with other systems via the signal).

In addition, this document describes the different ways of implementation in relation to the mobile device. The mobile device may also be called a system, subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, access terminal, user terminal, terminal, wireless communication device, user agent, user device, or user equipment (UE). Mobile is the second device may be a cellular phone, wireless phone, phone Protocol session initiation (SIP), station of the wireless local communication system (WLL), a personal digital assistant (PDA), a handheld device having wireless connection, computer or other processing device connected to a wireless modem. In addition, different ways of implementation are described in this document in relation to the base station. The base station can be used for communication with the mobile device (devices) and may also be called an access point, Node B, enhanced Node B (eNode B or eNB), base transceiver transmitting station (BTS) or some other terminology.

In addition, various features or characteristics described in this document can be implemented as a method, device, or product, using standard programming and/or engineering techniques. The term "product" when used in this document is intended for inclusion in a computer program accessible from any computer-readable device, carrier or media. For example, machine-readable media may include, but are not limited to, magnetic storage devices (e.g. hard disk, floppy disk, magnetic tape etc), optical disks (such as CD-di is K (CD), digital versatile disk (DVD), etc.), smart cards, and flash memory devices (e.g., EPROM, memory card, removable flash drive etc). Moreover, the various media described in this document can represent one or more devices and/or other machine readable mediums for storing information. The term "machine-readable medium" may include, but are not limited to, wireless channels and various other media, allowing for the storage, maintenance and/or move commands (teams) and/or data.

Described in this document technique can be used for various wireless communication systems, such as shared access, code division multiple access (CDMA), shared access with time division multiplexing (TDMA), collective access channel separation frequency (FDMA), collective access orthogonal frequency division multiplexing (OFDMA), the multiplexing in the frequency domain on a single carrier (SC-FDM), and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system may implement a radio technology such as universal terrestrial radio access (UTRA), CDMA2000, etc. UTRA includes wideband CDMA (W-CDMA) and other variants of CDMA. CDMA2000 covers standards IS-2000, IS-95 and is-856. A TDMA system may implement technology happy is ovasi, such as global system for mobile communications (GSM). An OFDMA system may implement a radio technology such as enhanced UTRA (E-UTRA), ultra-wideband mobile communications (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of the universal mobile telecommunications system (UMTS). Long-term development (LTE) 3GPP is the upcoming release of UMTS that uses E-UTRA, which employs OFDMA on the downlink and SC-FDMA on the uplink communication. UTRA, E-UTRA, UMTS, LTE and GSM are described in documents from an organization named "Partnership Project Third Generation (3GPP). CDMA2000 and UMB are described in documents from an organization named "the Second Project Third Generation Partnership" (3GPP2).

Referring now to figure 1, illustrates a wireless communication system 100 in accordance with various implementation presented in this document. The system 100 includes base station 102, which may include multiple groups of antennas. For example, one group of antennas may include antennas 104 and 106, another group may contain antennas 108 and 110, and an additional group may include antennas 112 and 114. For each group of antennas two antennas are illustrated; however, for each group, there may be more or fewer antennas. The base station 102 may additionally on the part of the transmitter circuit and the receiver circuit, each of which in turn can contain many components associated with transmission and reception of a signal (e.g., processors, modulators, multiplexers, demodulators, demultiplexes, antennas, etc. that will be understood by a person skilled in this technical field.

The base station 102 may communicate with one or more mobile devices, such as mobile device 116 and the mobile device 122; however, we must take into account that the base station 102 can communicate with virtually any number of mobile devices similar to mobile devices 116 and 122. Mobile devices 116 and 122 can be, for example, cellular phones, smartphones, laptops, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDA and/or any other suitable device for communication in the wireless communication system 100. As shown, the mobile device 116 communicates with antennas 112 and 114, where antennas 112 and 114 transmit information to the mobile device 116 in a straight line 118 communication and receive information from mobile device 116 through a return line 120 connected. In addition, the mobile device 122 communicates with antennas 104 and 106, where the antenna 104 and 16 transmit information to mobile device 122 in a straight line 124 connection and receive information from mobile device 122 through a return line 126 communication. In a system with frequency duplex mode (FDD) straight line 118 may be used, for example, a different frequency band than that used reverse line 120 communication, and the straight line 124 may apply a different frequency band than is reversed line 126 communication. In addition, in a duplex system with time division (TDD) straight line 118 connection and return line connection 120 may use a common frequency band, and the straight line 124 connection and return line connection 126 may use a common frequency band.

Each group of antennas and/or the area in which they are intended for communication, may be referred to as a sector of the base station 102. For example, groups of antennas can be designed to communicate with mobile devices in a sector of the areas covered by base station 102. When performing communication by the straight lines 118 and 124 communication transmitting antennas of the base station 102 may use the beam to improve the signal-to-noise in straight lines 118 and 124 communication for mobile devices 116 and 122. Also, although the base station 102 uses the beam for transmission to the mobile devices 116 and 122, are scattered on the associated zone, mobile devices in neighboring cells can be subject to less interference as compared with the base station transmitting through a single antenna is this its mobile devices. In addition, the mobile devices 116 and 122 can communicate directly with each other using peer-to-peer or special technology, which is shown.

According to the example, system 100 may be a communication system with many inputs and many outputs (MIMO). Additionally, the system 100 can use almost any type duplex methods to separate communication channels (e.g., straight line, return line, ...), such as FDD, TDD, etc. in Addition, one or more multiplexing schemes (e.g., OFDM) can be used to modulate multiple signals on a number of frequency subcarriers forming one or more communication channels. In one example, the transmitter channels, such as base station 102 and/or mobile devices 116 and 122 can additionally transmit a pilot signal or a reference signal for help in synchronization with another device or in the evaluation channels. For example, the reference signal (RS) downlink transmitted from the sectors in the base station 102 may depend on one or more synchronization codes. In the example, the RS may have a duration equal to the number subbarow (for example, 10 subbarow), and synchronization codes can be in one or more Subhadra (subsidry 0 and 5, in one example).

In accordance with the first is, used synchronization codes can uniquely identify a pseudo-random sequence (PRS)that is used for scrambling RS. In one example, the RS scramblies by performing the XOR operation with PRS. As mentioned, the previous system used orthogonal sequence with PRS to provide a characteristic honeycomb scrambled, uniquely tied to the identity of the cell; however, it is assumed that transmission having an extended cyclic prefix (CP), lead to greater selectivity of the channel, which begins to gradually reduce the orthogonality of the orthogonal sequences at the receiver (e.g., mobile devices 116 and/or 122). The subject matter described in this document uses the secondary synchronization code (SSC), which is converted into PRS together with the primary code synchronization (PSC), not only for the traditional definition of the boundary of the time interval, but also as a dynamic factor of recurrence for PRS to scramble the RS in accordance with some PRS. The combination of the PSC/SSC may also serve to identify the transmitter RS (for example, a particular sector in a base station 102, the mobile device 116 and 122 or related transmitting honeycomb). Thus, instead of applying the PRS and the orthogonal sequence, Prim is applied only PRS based on a combination of the PSC/SSC. As the number of PSC can be almost the same as the number of orthogonal sequences previously, the subject of the invention, which are described, provides nearly the same amount of combinations that were available using an orthogonal sequence. However, we must take into account that in subcateg with normal CP (or CP below a given threshold), where the orthogonal signals can provide significant benefits, such signals still can be used in conjunction with PRS to provide a characteristic honeycomb scrambled, uniquely tied to the identity of the cell.

Referring to figure 2, illustrates the device 200 connection for use in the wireless environment. The device 200 may be a sector of a base station or a part of it, mobile device or any part thereof, or virtually any communication device that receives the data transmitted in the wireless environment. The device 200 may include a block 202, the definition of a reference signal, which creates a RS for broadcast to one or more different communication devices, scrambler 204, which scramblase RS in accordance with one or more synchronization codes, and the transmitter 206, which transmits scrambled RS.

In accordance with approx the rum, the device 200 may transmit the RS downlink, which can be used by the receiver to determine information about the transmission device 200 of communication. In one example, the block 202 to determine the reference signal can generate RS, which can be used to identify or synchronization device 200 links and/or similar. Synchronization codes can contain the PSC and SSC-related characteristic of the cell scrambling used to transfer RS. SSC can unambiguously determine the appropriate PRS, and the PSC can uniquely determine the coefficient of repetition for PRS. Thus, the available number of PRS can be almost equal to the PSC work available and accessible SSC.

The PSC and SSC used by the device 200 communication, may refer to PRS used by the scrambler 204 for scrambling RS. It can also serve to identify the device 200 due regard to other transmitting devices. In the example 3GPP LTE 170 SSC may correspond 170 PRS that scrambler 204 may be used for scrambling RS. Moreover, 3 the PSC can provide the repetition factor for the submission of 510 PRS that can be used for scrambling RS and unambiguous identification device 200 connection or cell relative to the communications device, the receiving RS. Scrambled RS can the t transmitted to one or more of these devices by using a transmitter 206. You need to take into account that the above example can reduce the use of orthogonal sequences, the scrambling RS, where used, for example, Subhadra with advanced or longer CP (for example, where the subject of the far echo signals and the like).

However orthogonalization RS can be advantageous when the orthogonality can be maintained, it is assumed that when using the normal CP length. Thus, using the extended CP (for example CP, having a length exceeding a predetermined threshold value), the above combination of the PSC/SSC can determine PRS used by the scrambler 204, from RS. Not sure where CP does not exceed the threshold value or has the usual length, used PRS may apply to a single SSC, and the signal can orthogonalities in accordance with the traditional orthogonal sequence. In the example 3GPP LTE 170 SSC may correspond 170 PRS that scrambler 204 may be used for scrambling RS. Moreover, 3 orthogonal sequences can be available for orthogonalization RS to represent 510 combinations of orthogonal sequences and PRS that can be used for scrambling RS and unambiguous identification device 200 connection or cell.

Referring now to figure 3, the illustrated system 300 wireless keyboard is th link, which transmits the RS downlink, scrambled with a cell ID) based positioning. The system 300 includes a sector base station 302 that communicates with the mobile device 304 (and/or any number of other mobile devices (not shown)). Sector base station 302 can transmit information to the mobile device 304 to channel direct line of communication or downlink; moreover, the sector of the base station 302 can receive information from mobile device 304 through the channel of the reverse link or uplink communication. In addition, the system 300 can be a MIMO system. Also, the components and functionalities shown and described below in the sector of the base station 302 can be present in one example, the mobile device 304, and Vice versa with the same success; shows the configuration excludes these components for ease of explanation.

Sector base station 302 includes a block 306, the definition of a reference signal, which may form RS for transmission to the mobile device 304, where RS may contain information for the interpretation of signals transmitted from a sector base station 302, scrambler 308, which can scramble the RS using PRS, identifying the source, and a transmitter 310, which can transmit scrambled RS. As described, PRS can match estolate SSC and/or a pair PSC/SSC, stored in RS. For example, PRS may correspond to the SSC, where subsidry with normal CP is used together with an orthogonal sequence for orthogonalization RS and PRS can match a pair of PSC/SSC using subsidry with advanced CP, as described earlier.

The mobile device 304 includes a receiver 312, which can be transferred to the signal detector 314 reference signal, which can detect signals as RS, and descrambler 316, which may descrambling RS in accordance with the information. In one example, the receiver 312 may take one or more reference signals, and the detector 314 reference signal may determine that the signal is an RS, and extract timing information from one or more subbarow in RS. Descrambler 316 may descrambling reference signal to find additional information in accordance with the extracted information.

In one example, the block 306 to determine the reference signal can generate RS, as described earlier, and scrambler 308 may scramble the RS, as described earlier, using PRS corresponding to the combination of the PSC/SSC. RS can additionally store the PSC and SSC. Subsequently, the transmitter 310 may transmit RS one or more mobile devices, such as mobile device 304 to provide information about the synchronization/Ident is knosti sector 302 of the base station for communication with him. RS can be accepted by the receiver 312 of the mobile device 304 and determined as RS using the detector 314 reference signal. The detector 314 reference signal can detect the signal using, at least partially, determine its PSC and/or SSC (for example, on the basis of Subhadra 0 in RS). After determining the combination of the PSC/SSC detector 314 reference signal may recognize PRS used for scrambling RS, and descrambler 316 may descrambling RS in accordance with the PRS.

As described, in working with the advanced CP traditional step orthogonal sequence scrambling can be dangerous. Thus, the use of PRS only when expanding the number of available PRS to provide almost the same amount as the combination PRS/orthogonal sequence, provides similar flexibility to identify the sector 302 of the base station without additional steps orthogonalization. However, as mentioned, the use of orthogonal sequences can provide a gain in using the normal CP; accordingly, in this case, can be used orthogonal sequence along with a combination of the PSC/SSC in subcateg with extended CP in one instance.

In this example, mobile device 304 can receive RS by means of the receiver 312, and the detector 314 reference signal can in order to determine went whether Subcat 0 RS cupcake with advanced or normal CP. If an extended CP is found in subcate 0, the detector 314 reference signal may determine that the orthogonal ordering is not used in the scrambling RS for this subcode. Thus, the PRS was created from unique transformation from a combination of the PSC/SSC, and was only used PRS for scrambling RS. On the other hand, if a normal CP is found in subcate 0, the detector 314 reference signal may determine that the orthogonal ordering was used in the scrambling RS for this subcode. Thus, the PRS was created from the conversion of a single SSC and used for scrambling RS together with the orthogonal sequence. Descrambler 316 may use this information in descrambling RS.

Moreover, in this example, if the detector 314 reference signal detects an extended CP in subcate 0, then the extended CP in one example may be assumed for the remainder of subbarow. Therefore, the extracted combination of the PSC/SSC can be used by descrambler 316 to diskriminirovaniya remaining subbarow. However, if the detector 314 reference signal detect normal CP in subcate 0, the physical channel broadcast (PBCH), which is usually found in subcate 0 or dynamic is anal broadcast (DBCH) may specify, what subsidry using the extended CP, and which use normal CP. Where the remaining subsidry use normal CP, SSC may be correlated with the PRS, used for scrambling the corresponding subbarow, and the detector 314 reference signal may prevent the use of orthogonal sequences in these Subhadra; where the remaining subsidry using the extended CP, the combination of the PSC/SSC may be correlated with the PRS, used for scrambling the corresponding subcode, and orthogonal ordering is not used. You need to take into account that where Subcat 0 uses the extended CP, a dynamic BCH can optionally specify subsidry with normal and extended CP, so the above distinction can be used with respect to the remaining Subhadra. Moreover, you need to take into account that the combination of the PSC/SSC in the same example can be used in all subcateg regardless of the length of CP.

Referring to Fig.4-6, illustrates the methodology related to the scrambled reference signals downlink in accordance with the primary and secondary synchronization codes. Although in order to simplify the explanation, the methodologies are shown and described as a sequence of actions, it is necessary to understand that the methodology is not limited to procedures because some actions in accordance with one or more variants of the implementation can be performed in other orders and/or concurrently with other actions, in contrast to the shown and described in this document. For example, specialists in the art will understand and take into account that as an alternative methodology could be represented as a series of interrelated States or events, such as the state diagram. In addition, not all illustrated steps may be required to implement a methodology in accordance with one or more variants of implementation.

Referring to figure 4, illustrates a methodology 400 that facilitates the formation and transmission of scrambled RS downlink. At step 402 is formed RS downlink containing information relating to the transmitter RS. For example, the information may include synchronization codes, the data in the primary channel broadcasts and/or similar. At step 404 can determine a unique PRS, which corresponds to the primary and secondary code synchronization used by the transmitter RS. Code combination can be displayed directly in the PRS; accordingly, other nearby transmitters can transmit RS using different PRS, which help distinguish between RS. In this regard, PRS may allow the receiver RS to identify the transmitter.

At step 406 the reference signal downward l the Institute of communication scramblies using PRS. In one example, this can be performed by the XOR operation between RS and PRS. At step 408 is transmitted scrambled RS downlink. Thus, the RS scrambling can be performed without using an orthogonal sequence, while maintaining a certain number of possible skremblirovanie, where the number of available PSC coincides with the previously available orthogonal sequences. This may be advantageous in subcateg having an extended CP, as described, where the benefits orthogonal ordering may be lost due to the presumed high frequency selectivity of the channel.

Referring to figure 5, illustrates a methodology 500 that facilitates diskriminirovaniya reference signals based, at least partially, code synchronization. At step 502 is received RS downlink; in one example, it may be supplied from a transmitter, the implementation of which is necessary. At step 504 identifies the primary and secondary synchronization codes in a part of the RS. Codes can be retrieved from the specific frequency-time locations in certain Subhadra, for example subcateg 0 and 5. At step 506 determines PRS based at least in part, the primary and secondary synchronization codes; this may also partly be based on the duration of the CP, as opisyvayuscyei. For example, codes can be correlated with PRS used for RS scrambling prior to transmission, and at step 508 PRS can be used to diskriminirovaniya RS. In one example, the secondary synchronization code may be directly relevant to PRS, whereas the primary synchronization code is a repetition factor for PRS, or Vice versa.

Referring to Fig.6, illustrates a methodology 600 that facilitates diskriminirovaniya RS downlink based, at least partially, the size of the cyclic prefix associated with one or more frames or subquadrate in RS. At step 602 is received RS downlink containing one or more subbarow. The method begins with subcode 0 as the current Subhadra. At step 604 is estimated the length of the CP current Subhadra. If CP is advanced (for example, having a length greater than the specified threshold), the previously extracted combination of the PSC/SSC can be used to determine PRS for diskriminirovaniya RS. You need to take into account that at stage 606, the combination of the PSC/SSC can be removed using almost any of the ways described in this document. At step 608 may determine whether the following Subcat in RS. If so, we can assume that the remaining subsidry also have an extended prefix, and accordingly on the stage 610, because Subcat 0 has an extended CP, the following Subcat can become the current Subhadra and similarly evaluated at step 606 until no longer following subbarow. When there are no more subbarow, the method continues to step 612, where RS interpreted.

If at step 604 it is determined that Subcat 0 is not extended CP, then at step 614 the previously extracted SSC can be used to determine directly correlated PRS that with the same success to descrambler.html Subcat using an orthogonal sequence. In this regard, for unexpanded or normal CP orthogonal sequence used by the scrambler in the transmitter. However, in this case, it cannot be assumed that the remaining subsidry have unexpanded CP; accordingly, if at step 608 remain following subsidry because Subcat 0 is not extended CP at step 610, the method returns to step 604 to evaluate CP next Subhadra. However, if there are no subbarow, then at step 612 interpreted RS. Therefore, the method may permit the use of orthogonal sequences in subcateg with normal CP to preserve their benefits, along with the elimination of the orthogonal ordering of subbarow with advanced CP, as described in this document, where the benefits orthogonal ordering can be broken suppose agemay the frequency selectivity of the channel.

You will need to take into account that, in accordance with one or more features described in this document can be made findings regarding the determination of the PSC or SSC for a given transmitter as described. When used in this document, the term "output" or "output" in General refers to the process of reasoning or inference of States of the system, environment, and/or user from a set of observations that are registered via events and/or data. The output can be used to identify a specific context or action, or can generate a probability distribution over the States. The output can be probabilistic - that is, by calculating the probability distribution of interest to the States on the basis of consideration of data and events. The output can also refer to the methods used for compiling high-level events from the set of events and/or data. This conclusion leads to the construction of new events or actions from a set of observed events and/or stored event data, regardless of, relate to events in close temporal proximity, and do events and data from one or more event sources and data.

In accordance with the example, one or more of the above methods which may include conclusions regarding the determination of the combination of the PSC/SSC, related PRS, identity transmitter based on a combination of the PSC/SSC orthogonal sequences used in subcateg with normal CP, the length of the cyclic prefix for one or more subbarow, etc.

7 is an illustration of a mobile device 700 that facilitates diskriminirovaniya received RS downlink. Mobile device 700 includes a receiver 702, which receives the signal, for example, from the receiving antenna (not shown), performs typical actions on the received signal (e.g., filters, amplifies, converts with decreasing frequency, etc.) and quantizes the transformed signal to obtain samples. The receiver 702 may include a demodulator 704, which can demodulate received symbols and provide them to the processor 706 for channel estimation. Processor 706 can be a processor dedicated to analyzing information received by receiver 702, and/or generation of data for transmission by the transmitter 716, the processor that controls one or more components of the mobile device 700, and/or a processor that both analyzes information, adopted by the receiver 702, generates information for transmission by transmitter 716, and controls one or more components of the mobile device 700.

The mobile device 700 may further comprise remember the e device 708, which is functionally connected to the processor 706 and which can store data that must be transmitted, received data related to available channels, data associated with analyzed signal and/or interference power, information related to the selected channel, power, speed or the like, and any other suitable information for estimating a channel and communication channel. Storage device 708 can additionally store protocols and/or algorithms associated with the evaluation and/or use of the channel (e.g., based on performance, based on bandwidth and so on).

You will need to take into account that described in the document data store (e.g., storage device 708 can be either volatile memory or nonvolatile memory, or can include both volatile and non-volatile storage device. As an illustration, and not limitation, nonvolatile memory device may include a permanent storage device (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable PROM (EEPROM) or flash memory. A volatile storage device may include random access memory is a device (RAM), which acts as external cache memory. As an illustration, and not limitation, RAM is available in many forms such as synchronous RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM)SDRAM double data rates (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM exchange channel (SLDRAM), and RAM with direct access from Rambus (DRRAM). Storage device 708 of the discussed systems and methods is intended to include (without being limited to these and any other suitable types of storage devices.

The processor 706 and/or the receiver 702 can further be functionally connected to the detector reference signal 710, which determines whether the received signal of the reference signal to the downlink. In addition, the detector reference signal 710 may determine PRS used by the transmitter for RS scrambling prior to transmission. In one example, this may be based, at least in part, on the extracted combination PSC/SSC provided in RS, which correlates with the PRS. In addition, this combination can be used to identify the transmitter RS. In another example, where the cyclic prefix is a normal, detector 710 reference signal with the same success can define orthogonal sequence used for scrambling RS. Using this information, descrambler 712 can describ the funds RS.

In accordance with the example, the detector reference signal 710 may determine the length of the cyclic prefix of one or more subbarow RS and determine to descrambler.html whether using PRS related to the combination of the PSC/SSC or PRS related to SSC, together with the orthogonal sequence. As described, the first can be used in subcateg with advanced CP, because the orthogonality would be probably lost in the presence of selectivity in frequency due to the extended CP, while the latter can be used to subbarow having a normal CP. Alternatively, a combination of the PSC/SSC can be displayed in PRS in almost all cases. The mobile device 700, moreover, contains a modulator transmitter 714 and 716, which respectively modulate and transmit a signal, for example, to the base station, another mobile device, etc. Although depicted as separate from the processor 706, it is necessary to understand that the detector 710 reference signal, descrambler 712, demodulator 704, and/or modulator 714 can be part of processor 706 or multiple processors (not shown).

Fig - illustration of a system 800 that facilitates the formation and scrambled RS downlink for transmission. The system 800 includes a base station 802 (e.g., access point, ...) with receiver 810 that receives signal(s) from one or n is how many mobile devices 804 through multiple receiving antennas 806, and transmitter 824, which transmits to one or more mobile devices 804 via the transmitting antenna 808. The receiver 810 may receive information from the receiving antennas 806 and functionally associated with the demodulator 812, which demodulates received information. Demodulated symbols are analyzed by a processor 814, which may be similar to the processor described above in relation to 7, and which is connected with a memory 816 that stores information relevant to the assessment of the level of the signal (e.g., pilot signal) and/or interference level, the data that must be transferred to or received from mobile device (s) 804 (or even another base station (not shown)), and/or any other suitable information related to performing the various actions and functions set out in this document. Processor 814 is additionally connected with the driver 818 reference signal, which creates a RS that can be used to determine synchronization, identity, and/or other information about the base station 802, and scrambler 820, which can scramble RS.

In accordance with the example, the driver 818 reference signal can generate RS containing primary and secondary synchronization codes. Codes can uniquely identify the base station 802, and may also bar dstone to correspond to one of a number of PRS. Scrambler 820 may scramble the RS using the PRS (e.g., by XOR operation). In subcateg having a normal CP, PRS may apply to SSC, and the orthogonal sequence in one example, may additionally be used for scrambling RS. Scrambled RS can be transmitted to one or more mobile devices 804 from the transmitter 824. Furthermore, although depicted as separate from the processor 814, it is necessary to understand that the driver 818 reference signal scrambler 820, demodulator 812, and/or modulator 822 can be part of the processor 814 or multiple processors (not shown).

Fig.9 shows an example system 900 wireless. The system 900 wireless depicts one base station 910 and one mobile device 950 for the sake of brevity. However, we must take into account that the system 900 may include more than one base station and/or more than one mobile device, where the additional base stations and/or mobile devices can be substantially similar or different from the example base station 910 and the mobile device 950, described below. Besides, we need to understand that the base station 910 and/or mobile device 950 can use system (Fig.1-3 and 7-8) and/or methods (figure 4-6)described in this document to facilitate wireless communication between them.

Nabatova station 910 traffic data for a certain number of data streams is provided from a source 912 data processor 914 transmit (TX) data. According to the example, each data stream can be transmitted by the corresponding antenna. Processor 914 transmitted data formats, encodes, and punctuates the flow of data traffic based on a particular coding scheme selected for that data stream to provide coded data.

The coded data for each data stream can multiplicious data pilot signal, using techniques of multiplexing orthogonal frequency division multiplexing (OFDM). Additionally or alternatively, the symbols of the pilot signal can be multiplexed with channel separation frequency (FDM), multiplexed time division (TDM) or multiplexed code division (CDM). Data pilot signal are usually known data pattern that is processed in a known manner and can be used on a mobile device 950 to assess the characteristics of the channel. Multiplexed pilot signals and the coded data for each data stream may be modulated (e.g., character converted) based on a particular modulation scheme (e.g., dip phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-point phase shift keying (M-PSK), M-point quadrature amplitude modulation (M-QAM), and so on)selected for e is th data stream, to provide modulation symbols. The data rate, coding and modulation for each data stream may be determined by the teams that are performed or provided by the processor 930.

The modulation symbols for the data streams may be provided to the processor 920 MIMO transmission, which may further process the modulation symbols (e.g., for OFDM). The processor 920 MIMO transmission then provides NTstreams of modulation symbols NTthe transmitters 922a-922t (TMTR). In a different implementation, the processor 920 MIMO transmission applies the weight of the beam shaping symbols of the data streams and to the antenna from which the character is sent.

Each transmitter 922 receives and processes the corresponding character stream to provide one or more analog signals and further processes (e.g., amplifies, filters and converts with increasing frequency) analog signals to provide a modulated signal suitable for transmission over the MIMO channel. Next, NTmodulated signals from transmitters 922a-922t transmitted from the NTantennas 924a-924t, respectively.

On a mobile device 950 transmitted modulated signals, the NRantennas 952a-952r, and the received signal from each antenna 952 is provided to the appropriate receiver 954a-954r (RCVR). Each of the receiver 954 processes (for example, filters, amplifies and converts with decreasing frequency) corresponding signal, digitizes the processed signal to provide samples, and optionally processes the samples to provide a corresponding "adopted" a stream of characters.

The processor 960 received data may receive and process the NRthe received streams of characters from the NRreceivers 954 based on a specific methodology for processing receiver to provide NT"discovered" streams of characters. The processor 960 received data may demodulate, to eliminate interleaving and decoding each stream is detected symbols to recover the traffic data for the data flow. The CPU 960 received data complementary to that performed by the processor 920 MIMO transmission and the processor 914 data transmitted to the base station 910.

The processor 970 may periodically determine the matrix pre-encoding to use, as discussed above. Next, the processor 970 may be a message back line containing part of the index matrix and part of the value of rank.

Message return line can contain various types of information regarding the communication line and/or the received data stream. Message return line may be processed by processor 938 transmitted data, the which also receives traffic data for a certain number of data streams from a source data 936, be modulated by a modulator 980, processed transmitters 954a-954r and transmitted back to base station 910.

At the base station 910 modulated signals from a mobile device 950 accepted antennas 924, processed by receivers 922, demodulate the demodulator 940 and processed by the processor 942 received data to retrieve the message back line, transferred to the mobile device 950. Next, the processor 930 may process the extracted message to determine the matrix pre-coding be used to determine the weights of the beam shaping.

Processors 930 and 970 can manage (e.g., control, coordinate, manage, etc) work on the base station 910 and the mobile device 950, respectively. The corresponding processors 930 and 970 can be associatively connected with the storage device 932 and 972, which store program codes and data. Processors 930 and 970 can also perform calculations to derive estimates of the frequency and impulse response for uplink communication and downlink, respectively.

You need to understand that described in this document, options for implementation may be implemented in hardware, software, firmware, middleware, microcode, or is any combination. For the hardware implementation of the processing modules may be implemented in one or several specific integrated circuits (ASIC), digital signal processors (DSPS), digital signal processing (DSPD), programmable logic devices (PLD), programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, other electronic units designed to perform as described in this document, function, or combination.

When options for implementation are implemented in software, firmware, middleware or microcode, program code or code segments, they can be stored on machine-readable media, such as component storage. The code segment may represent a procedure, a function, a subprogram, a program, a procedure, a subroutine, a module, a software package, class, or any combination of commands, data structures or operators of programs. The code segment can be associated with another code segment or a hardware circuit by transmitting and/or receiving information, data, arguments, parameters, or memory contents. Information, arguments, parameters, data, etc. can be sent, forwarded, or transmitted using any suitable means, including the I memory sharing, message forwarding relay transmission, network transmission, etc.

For the software implementation described in this document, the techniques may be implemented with modules (e.g., procedures, functions, and so on)that perform the described in this document functions. Software codes may be stored in a storage device and executed by the processors. The storage device may be implemented within the processor or external to your processor, in this case, it may be a communication connected with the processor via various means known in the art.

With reference to figure 10 illustrates a system 1000, which descrambles received RS downlink in accordance with the PRS. For example, system 1000 can reside at least partially within a base station, mobile device, etc. Need to understand that the system 1000 is represented as including functional blocks, which can be functional blocks that represent functions implemented by a processor, software, or combination thereof (e.g., firmware). The system 1000 includes a logical grouping 1002 of electrical components that can act in conjunction. For instance, logical grouping 1002 can include an electrical the cue component 1004 for receiving scrambled RS downlink. For example, the RS may be received from the transmitter and may contain timing information and/or identifying information of the transmitter, such as a unique synchronization codes, which can be selected from the available set of codes. Additionally, logical grouping 1002 can include an electrical component 1006 for the Association PRS at least primary and secondary sync in RS downlink. For example, a unique synchronization codes can correspond to the PRS; uniqueness property can help in the identification transmitter RS. In addition, logical grouping 1002 can include an electrical component 1008 for diskriminirovaniya part of the RS downlink in accordance with the PRS. RS later could be interpreted to extract other information. Moreover, the system 1000 may include a storage device 1010, which stores commands for executing functions associated with electrical components 1004, 1006 and 1008. We must understand that one or more electrical components 1004, 1006 and 1008 may exist within the storage device 1010, and although shown as external to the storage device 1010.

Addressing 11 illustrates a system 1100 that creates and scramblase RS for transmission over the wireless network the telecommunication. The system 1100 may be, for example, base station, mobile device, etc. As depicted, the system 1100 includes functional blocks that can represent functions implemented by a processor, software, or combination thereof (e.g., firmware). The system 1100 includes a logical grouping 1102 of electrical components that facilitate the formation and scrambled RS. Logical grouping 1102 can include an electrical component 1104 for the formation of the RS downlink containing primary and secondary synchronization codes. This information not only allows the receiver to identify the transmitter information, but get information on synchronization with the transmitter for subsequent communication. Moreover, such information can inform what PRS is used for RS scrambling prior to transmission. Moreover, logical grouping 1102 can include an electrical component 1106 for scrambling RS downlink based, at least partially, PRS, corresponding to the combination of primary and secondary synchronization codes. Thus, it can be used by the transmitter set PRS directly converted into a combination code synchronization. In this regard, depending on kolichestvoparkov PRS/synchronization code, the chances of a similar PRS used a different transmitter, which can cause interference, decrease with increase in the number of transformations. After scrambling RS can be transmitted or sent in the broadcast mode different receptors. Moreover, the system 1100 may include a storage device 1108, which stores commands for executing functions associated with electrical components 1104 and 1106. You need to understand that electrical component 1104 and 1106 may exist within the storage device 1108, though shown as external to the storage device 1108.

What described above includes examples of one or more embodiments. Of course, it is impossible to describe every possible combination of components or methodologies for purposes of describing the above embodiments, however, an ordinary specialist in the art may recognize that many valid for more combinations and permutations of the various embodiments. Accordingly, the described embodiments of intended to cover all such changes, modifications and variations that are within the essence and scope of the attached claims. In addition, when the term "includes" is used l the Bo in the detailed description, or in the claims, such term is intended to be including, in some sense analogous to the term "comprising"as "comprising" is interpreted when applied as a transitional word in a claim.

1. The way of reception of the reference signal downlink in a wireless communication network, comprising stages, which are:
take the scrambled reference signal downlink;
determine a pseudo-random sequence based at least in part, the received primary and secondary synchronization codes; and
descrambling part subbarow reference signal downlink in accordance with a pseudorandom sequence and a certain length of cyclic prefix for one or more of the parts subbarow.

2. The method according to claim 1, in which the primary and secondary synchronization codes take a different signal from the transmitter.

3. The method according to claim 1, in which the phase in which descrambling perform over Subhadra length of cyclic prefix is above the predetermined threshold value.

4. The method according to claim 1, additionally containing a phase in which descrambling part subbarow reference signal downlink, having a length of cyclic prefix is less than the predetermined threshold value based, at least partially, PS is delusinal sequence, appropriate secondary code synchronization and the orthogonal sequence.

5. The method according to claim 1, additionally containing phase, which evaluated the first Subcat to determine the length of the cyclic prefix for the first subcode and the possible lengths of the cyclic prefixes for the remaining subbarow.

6. The method according to claim 5, in which the dynamic channel broadcasts in subcate provides the length of the cyclic prefix of the remaining subbarow.

7. The method according to claim 1, additionally containing phase, which identifies the transmitter based, at least partially, the primary and secondary synchronization codes.

8. The method according to claim 1, additionally containing phase, which extracts the primary and secondary synchronization codes of the reference signal downlink.

9. Wireless communication for diskriminirovaniya reference signal downlink containing:
at least one processor configured to determine the length of the cyclic prefix of one or more subbarow reference signal downlink, selection diskriminirovaniya based, at least partially, the length of the cyclic prefix and diskriminirovaniya reference signal downlink according to the selected descrambling; and
storage device, the United States is e, at least one processor.

10. The wireless communication device according to claim 9, in which the length of the cyclic prefix of one or more subbarow exceeds a predetermined threshold value, and diskriminirovaniya is performed using a pseudo-random sequence from a combination of primary and secondary synchronization code in the reference signal.

11. The wireless communication device of claim 10, in which a combination of primary and secondary synchronization code identifies the transmitter of the reference signal.

12. The wireless communication device according to claim 9, in which the length of the cyclic prefix of one or more subbarow is below the predetermined threshold value, and diskriminirovaniya is performed using a pseudo-random sequence of secondary synchronization code in the reference signal and a specific orthogonal sequence.

13. The wireless communication device according to claim 9, in which one or more subbarow are the first Subhadra reference signal.

14. The wireless communication device according to item 13, in which the cyclic prefix of the first Subhadra has a normal length, and at least one processor is additionally configured to determine the lengths of the cyclic prefixes for the remaining subbarow through the evaluation of dynamic canaliscervicisuteri distribution in the reference signal of the downlink.

15. The wireless communication device according to item 13, in which the cyclic prefix of the first Subhadra is the cyclic prefix extended length, and at least one processor is additionally configured to determine the remaining subbarow with increased length of cyclic prefix.

16. The wireless communication device for receiving reference signals downlink containing:
means for receiving a scrambled reference signal downlink;
means for associating a pseudo-random sequence, at least the primary and secondary code synchronization reference signal downlink; and
means for diskriminirovaniya part of the reference signal downlink in accordance with a pseudorandom sequence.

17. The wireless communication device according to item 16, further containing a means for determining the length of cyclic prefix for one or more subbarow part of the reference signal downlink.

18. The wireless device 17, in which diskriminirovaniya performed on at least one Subhadra length of cyclic prefix is above the predetermined threshold value.

19. The wireless communication device according to 17, further containing a means for diskriminirovaniya, at least, real is Subhadra, having a length of cyclic prefix is less than the predetermined threshold value based at least in part, a pseudo-random sequence corresponding secondary code synchronization and the orthogonal sequence.

20. The wireless communication device according to 17, further containing a means for the evaluation of the first Subhadra to determine the length of the cyclic prefix for the first subcode and possible length cyclic prefixes for the remaining subbarow.

21. The wireless communication device according to claim 20, in which the dynamic channel broadcasts in subcate provides the length of the cyclic prefix of the remaining subbarow.

22. The wireless communication device according to item 16, further containing a means for identification of the transmitter based, at least partially, the primary and secondary synchronization codes.

23. The wireless communication device according to item 16, further containing a means for extracting the primary and secondary synchronization codes of the reference signal downlink.

24. Machine-readable media containing the stored codes, which when executed by a computer instruct the computer to perform the method of receiving the reference signal downlink in a wireless communication network, while the codes contain:
code, prescribing, m is Nisha least one computer to receive scrambled reference signal downlink;
code that directs at least one computer to determine a pseudo-random sequence with at least primary and secondary synchronization code; and
code that directs at least one computer to descrambling part of the reference signal downlink in accordance with a pseudorandom sequence and a certain length of cyclic prefix for one or more of the parts subbarow.

25. Machine-readable media according to paragraph 24, further containing code that directs at least one computer to determine the length of the cyclic prefix for one or more subbarow part of the reference signal downlink.

26. The mode of transmission of the reference signal of the downlink in a wireless communication network, comprising stages, which are:
form a reference signal downlink containing primary and secondary synchronization codes;
scrambling reference signal downlink based at least in part, a pseudo-random sequence corresponding to the combination of primary and secondary synchronization codes; and
transmit the scrambled reference signal downlink.

27. The method according to p, in which the tap, where scrambler perform in part subbarow reference signal downlink, having a length of cyclic prefix is above the predetermined threshold value.

28. The method according to item 27, further comprising stages, which are:
scrambler part subbarow reference signal, having a length of cyclic prefix is less than or equal to the threshold value based at least in part, a pseudo-random sequence corresponding secondary code synchronization; and
apply orthogonal sequence to scrambled Subhadra reference signal, having a length of cyclic prefix is less than or equal to the threshold value.

29. The method according to p, in which a pseudo-random sequence corresponds to the secondary code synchronization, and the primary synchronization code is the repetition factor for the pseudorandom sequence.

30. The method according to p, in which a combination of primary and secondary synchronization code identifies the transmitter of the reference signal.

31. The wireless communication device for scrambling the reference signal downlink containing:
at least one processor configured to obtain a pseudo-random sequence corresponding to the selected combination of primary and secondary synchronization code, and the TFR is melirovanie reference signal downlink using a pseudo-random sequence; and
a storage device that is connected to at least one processor.

32. Wireless communication p, in which the at least one processor is additionally configured to transmit scrambled reference signal downlink.

33. Wireless communication p, in which the at least one processor scramblase part subbarow reference signal downlink, having a length of cyclic prefix is above the predetermined threshold value.

34. Wireless communication p, in which the at least one processor is additionally configured to:
scrambling a totally different part subbarow reference signal, having a length of cyclic prefix is less than the threshold value based, at least partially, completely different pseudo-random sequence corresponding secondary code synchronization; and
application of orthogonal sequences to different parts subbarow.

35. Wireless communication p, in which a pseudo-random sequence corresponds to the secondary code synchronization, and the primary synchronization code is the repetition factor for the pseudorandom sequence.

36. Wireless communication p, in which a combination of primary and secondary the ode synchronization identifies the wireless device.

37. The wireless communication device for scrambling reference signals downlink in a wireless communication network, comprising:
the means for forming a reference signal downlink containing primary and secondary synchronization codes; and
means for scrambling the reference signal downlink based at least in part, a pseudo-random sequence corresponding to the combination of primary and secondary synchronization codes.

38. The wireless communication device according to clause 37, further containing a means for transmitting scrambled reference signal downlink.

39. The wireless communication device according to clause 37, in which the scrambling is performed in part subbarow reference signal downlink, having a length of cyclic prefix is above the predetermined threshold value.

40. Wireless communication according to § 39, further comprising:
means for scrambling part subbarow reference signal, having a length of cyclic prefix is less than the threshold value based at least in part, a pseudo-random sequence corresponding secondary code synchronization; and
means for applying an orthogonal sequence to scrambled Subhadra reference signal having the length of cyclic the ski prefix is less than the threshold value.

41. The wireless communication device according to clause 37, in which a pseudo-random sequence corresponds to the secondary code synchronization, and the primary synchronization code is the repetition factor for the pseudorandom sequence.

42. The wireless communication device according to clause 37, in which a combination of primary and secondary synchronization code identifies the transmitter of the reference signal.

43. Machine-readable media containing the stored codes, which when executed by a computer instruct the computer to perform a method of transmitting reference signal downlink in a wireless communication network, while the codes contain
code that directs at least one computer to generate the reference signal downlink containing primary and secondary synchronization codes; and
code that directs at least one computer to scramble a reference signal of the downlink based at least in part, a pseudo-random sequence corresponding to the combination of primary and secondary synchronization codes.

44. Machine-readable medium according to item 43, further containing code that directs at least one computer to transmit the scrambled reference signal downlink.

45. Machine-readable medium according to item 43, in which the TFR is melirovanie is in part subbarow reference signal downlink, having a length of cyclic prefix is above a given threshold.



 

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1 cl, 1 dwg

FIELD: radio communications engineering; mobile ground- and satellite-based communication systems.

SUBSTANCE: proposed modulator that incorporates provision for operation in single-channel mode with selected frequency modulation index m = 0.5 or m = 1.5, or in dual-channel mode at minimal frequency shift and without open-phase fault has phase-shifting voltage analyzer 1, continuous periodic signal train and clock train shaping unit 2, control voltage shaping unit 3 for switch unit 3, switch unit 3, switch unit 4, two amplitude-phase modulators 5, 6, phase shifter 7, carrier oscillator 8, and adder 9.

EFFECT: enlarged functional capabilities.

1 cl, 15 dwg

FIELD: electronic engineering.

SUBSTANCE: device has data processing circuit, transmitter, commutation unit, endec, receiver, computation unit, and control unit.

EFFECT: high reliability in transmitting data via radio channel.

4 dwg

FIELD: electronic engineering.

SUBSTANCE: method involves building unipolar pulses on each current modulating continuous information signal reading of or on each pulse or some continuous pulse sequence of modulating continuous information code group. The number of pulses, their duration, amplitude and time relations are selected from permissible approximation error of given spectral value and formed sequence parameters are modulated.

EFFECT: reduced inetrsymbol interference; high data transmission speed.

16 cl, 8 dwg

FIELD: communication system transceivers.

SUBSTANCE: transceiver 80 has digital circuit 86 for converting modulating signals into intermediate-frequency ones. Signal source 114 transmits first periodic reference signal 112 at first frequency. Direct digital synthesizer 84 receives second periodic signal 102 at second frequency from first periodic reference signal. Converter circuit affording frequency increase in digital form functions to convert and raise frequency of modulating signals into intermediate-frequency digital signals using second periodic signal 102. Digital-to-analog converter 82 converts intermediate-frequency digital signals into intermediate-frequency analog signals using first periodic reference signal 112.

EFFECT: reduced power requirement at low noise characteristics.

45 cl, 3 dwg

FIELD: radio engineering; portable composite phase-keyed signal receivers.

SUBSTANCE: proposed receiver has multiplier 4, band filter 6, demodulator 8, weighting coefficient unit 5, adding unit 7, analyzing and control unit 10, synchronizing unit 3, n pseudorandom sequence generators 21 through 2n, decoder 1, and switch unit 9. Receiver also has narrow-band noise suppression unit made in the form of transversal filter. Novelty is that this unit is transferred to correlator reference signal channel, reference signal being stationary periodic signal acting in absence of noise and having unmodulated harmonic components that can be rejected by filters of simpler design than those used for rejecting frequency band of input signal and noise mixture. Group of synchronized pseudorandom sequence generators used instead of delay line does not need in-service tuning.

EFFECT: facilitated realization of narrow-band noise suppression unit; simplified design of rejection filters.

1 cl, 8 dwg

FIELD: mobile radio communication systems.

SUBSTANCE: proposed method and device are intended to control transmission power levels for plurality of various data streams transferred from at least one base station to mobile one in mobile radio communication system. First and second data streams are transmitted from base station and received by mobile station. Power-control instruction stream is generated in mobile station in compliance with first or second data stream received. Power control signal is shaped in mobile station from first power control instruction stream and transferred to base station. Received power control instruction stream is produced from power control signal received by base station; power transmission levels of first and second data streams coming from base station are controlled in compliance with power control instruction stream received. In this way control is effected of transmission power levels of first data stream transferred from each base station out of first active set to mobile station and of transmission power levels of second data stream which is transferred from each base station out of second active set to mobile station.

EFFECT: enlarged functional capabilities.

80 cl, 21 dwg

FIELD: radio engineering.

SUBSTANCE: proposed method and device designed for fast synchronization of signal in wade-band code-division multiple access (WCDMA) system involve use of accumulations of variable-length samples, testing of decoder estimates for reliability, and concurrent decoding of plurality of sync signals in PERCH channel. Receiver accumulates samples required for reliable estimation of time interval synchronization. As long as time interval synchronization estimates have not passed reliability tests, samples are accumulated for frame synchronization estimates. As long as frame synchronization estimates have not passed reliability tests, samples are analyzed to determine channel pilot signal shift.

EFFECT: reduced time for pulling into synchronism.

13 cl, 9 dwg

FIELD: satellite navigation systems and may be used at construction of imitators of signals of satellite navigational system GLONASS and pseudo-satellites.

SUBSTANCE: for this purpose two oscillators of a lettered frequency and of a fixed frequency are used. Mode includes successive fulfillment of the following operations - generation of a stabilized lettered frequency, its multiplication with an oscillator's fixed frequency and filtration of lateral multipliers with means of filters of L1 and L2 ranges and corresponding option of a fixed and a lettered frequencies.

EFFECT: reduces phase noise and ensures synthesizing of lettered frequencies of L1 and L2 ranges of satellite navigational system from one supporting generator at minimum number of analogous super high frequency units.

3 cl, 1 dwg

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