Relay transmission method and apparatus. RU patent 2509431.
 Pilot transmission scheme for wireless multi-carrier communication systems / 2507699Pilot transmission schemes may utilise frequency, time, or both frequency and time orthogonality to achieve orthogonality between pilots transmitted by multiple base stations on a downlink. Frequency orthogonality is achieved by transmitting pilots in non-overlapping sets of subbands. Time orthogonality is achieved by transmitting pilots using different orthogonal codes (e.g., Walsh codes). The pilots may also be scrambled with different scrambling codes, which are used to randomise pilot interference and to enable identification of the transmitters of said pilots. Pilot interference cancellation may be performed to improve performance since subbands used for data transmission by one transmitter may also be used for pilot transmission by another transmitter. Pilot interference is estimated and then subtracted from received symbols to obtain pilot-cancelled symbols having improved quality. |
 Signal transmission and reception apparatus and signal transmission and reception method / 2506705Invention relates to digital television (DTV) signal transmission/reception systems. The technical result is achieved due to that the signal reception method comprises steps of: receiving a signal transmitted in the radio-frequency band, which includes at least one radio-frequency channel, demodulating the received signal, analysing the signal frame preamble, which includes information layer 1 (L1) from the demodulated signal, reverse ordering information layer 1 bits, decoding the reverse ordered bits using an error-correction decoding scheme, which includes a shortening scheme and a perforation scheme, and obtaining physical layer channels (PLP) from the signal frame using the error-correction decoded information layer 1. |
 Construction of very high throughput long training field sequences / 2505935Method of constructing very high throughput (VHT) long training field (LTF) sequences for wireless communication involves generating a LTF sequence by combining a plurality of interpolating sequences with LTF symbol values associated with at least one of: the IEEE 802.11n standard or the IEEE 802.11a standard, and one or more complementary sequences in order to reduce the peak-to-average power ratio (PAPR) during a transmission of the generated LTF sequence, and transmitting the generated LTF sequence over a wireless channel using an 80 MHz bandwidth. |
 Apparatus and method for single user multiple input multiple output communication employing cyclic shifts / 2504094Multiple values of cyclic shifts are calculated in user equipment utilising multiple input multiple output transmission and has two or more antenna ports and a processor which is configured to share a cyclic shift space of reference signals of user equipment utilising single user multiple input multiple output transmission by applying a cyclic shift increment value between reference signals of different antenna ports or spatial layers of the user equipment transmission, wherein the processor is configured to generate the antenna port- or spatial layer-specific cyclic shift value in form of a combination of cell-specific value, user-specific values, antenna port or spatial layer separation value and pseudo-random value. |
 Novel code pattern structure for frame and data transmission in multicarrier system / 2504093Each frame contains at least one signal code pattern and one or more data code patterns, said transmission includes a frame generating means configured to arrange signal data in said at least one signal code pattern in a frame, and arranges data and at least one pilot signal in said one or more data code patterns in a frame, as a result of which the length of each of said one or more data code patterns in the frequency direction is equal to or is a multiple of the minimum length of the data code pattern, a conversion means configured to convert said at least one signal code pattern and said one or more data code patterns from the frequency domain to the time domain in order to generate a time-domain transmission signal, and a transmission means configured to transmit said time-domain transmission signal. |
 Downlink assignment indicator design for multi-carrier wireless communication / 2504092Method involves identifying a plurality of carriers configured for communication in a wireless communication system; determining a number of downlink transmission assignments associated with one or more first carriers from the plurality of carriers; and configuring, for communication over at least one or more second carriers from the plurality of carriers, at least one indication that specifies the number of downlink transmission assignments associated with at least the one or more first carriers. At least one indication includes a downlink assignment index (DAI) signalling, wherein the DAI signalling includes a time-based DAI, and a DAI indicating the number of downlink transmission assignments on the plurality of carriers. |
 Method and apparatus for resource mapping and code division multiplexing / 2502206Each cell selects a mapping scheme from at least two mapping schemes to implement resource mapping. Vector switching is performed for an orthogonal matrix to obtain multiple different codeword sequences and implement codeword design, so that the problem that the output power of reference signal symbols is unbalanced can be effectively alleviated. |
 Base station and method for reducing asynchronous interference in multi-tier ofdma overlay network / 2501175In some versions, a lower-tier base station is configured to adjust OFDMA frame boundaries to cause frames transmitted at a higher-tier to arrive within a cyclic prefix at the lower-tier base station. The lower-tier base station may also be configured to adjust OFDMA frame boundaries to cause frames transmitted at a lower-tier of the network to arrive within a cyclic prefix at a higher-tier mobile station. Accordingly, frames from one tier may arrive within the cyclic prefix of another, thereby reducing asynchronous interference. |
 Method of encoding control information in communication system, as well as method and apparatus for transmitting and receiving control information / 2498517In a method and apparatus for encoding and transmitting signal information in a communication system, the number of coded blocks for carrying the signal information is determined by dividing the number of bits of the signal information by a specific reference value, said specific reference value being based on the number of cells available for transmitting the signal information, and the modulation order. The number of information bits corresponding to coded blocks is calculated based on the determined number of signal information bits; the number of parity bits to be excluded in the coded blocks is calculated, and a frame including at least one of the coded blocks is transmitted. |
 New frame and training structure for multi-carrier systems / 2498516Invention relates to a transmitting apparatus (54) for transmitting signals in a multi-carrier system based on a frame structure, each frame comprising at least two training structures adjacent to each other in the frequency direction and at least two data structures, said transmitting apparatus comprising: pilot mapping means (55) adapted to map the same sequence of pilot signals on frequency carriers of each of said at least two training structures in a frame, each training structure having the same length, data mapping means (58, 58', 58") adapted to map data on frequency carriers of said at least two data structures in a frame, transforming means (60) adapted to transform said training structures and said data structures from the frequency domain into the time domain in order to generate a time domain transmission signal, and transmitting means (61) adapted to transmit said transmission signal. |
 Method and device for transferring synchronization channel message in multi-frequency communication system / 2249922In multi-frequency system base station, using a certain set of frequencies for communication and sending data in multiple frequency bands, includes first transfer subsystem for sending synchronization channel message on one bearing frequency from set of preferable frequencies, at least an additional transfer system for transferring remaining data components on other bearing frequency. Mobile station in multi-frequency communication system contains control processor, providing for functioning of subsystems of receiver in accordance to data, contained in message of synchronization channel. |
 System for transmitting quadruple-encoded radio signals / 2258313System has transmitting portion, which contains clock pulse generator 1, first and second D-code generators 21-22, first and second generator of double frequency manipulation 31-32, adder 4, modulator 5, frequencies synthesizer 6, pseudo-random numbers generator 7. said portion is connected through broadcast line 8 to receiving portion, which has demodulator 9, frequencies synthesizer 10, pseudo-random numbers 11, signals selector 12, clock pulses generator 13, block for selecting additional series 14, block for folding additional series 15, solving block 16. new set of significant features provides for possible implementation of distributed receipt with code structure of specific orthogonal quadruple-encoded series without expansion of available frequency resource. |
 Device and method for transmitting and receiving with decreased relation of pike power to average power in mobile communication system with orthogonal multiplexing with frequency separation / 2264041Device for decreasing relation of pike power to average power signal, sent along N(=2r) sub-bearing lines in transmitting device, having encoders for block encoding of w input data, where r - real number > 2, and output of N code symbols, has: serial-parallel converter for transforming data flow to w-(r-2) parallel data flows, where w - length of information word, first coder for receipt of w/2 parallel data flows from w-(r-2) parallel data flows from serial/parallel converter, block encoding of w/2 parallel data flows and output of N/2 first code symbols, generator of input operators for generation of r-2 data flows of input operators, in accordance to w-(r-2) parallel data flows, and second coder for receiving parallel data flows from serial/parallel converter, which were not received at first coder and (r-2) data flows from input operators, block encoding of received data flows and output of N/2 second code symbols, while r-2 data flows of input operators provide for complementarity of N code symbols. |
 System for transmission of quad-encoded radio signals / 2268550System consists of transmitter portion, which has clock pulse generator, Different-code generator, generator of double frequency manipulation signals, modulator, frequencies synthesizer, pseudo-random numbers generator, connected via broadcast pipe to receipt portion, which has demodulator, frequencies synthesizer, pseudo-random numbers generator, signals selector, clock pulse generator, block for selecting additional series, first and second two-channeled synchronized filters, first and second subtracter, interference compensator and resolving block. |
 Device for receiving quadruple-encoded series / 2273961Device has commutator, k-1 delay blocks, branch device, multi-branch delay line, k-1 transformers of pulse series, law-setting block, block for processing optical signal and solving block. |
 Device and method for generation of preamble series in communications system with orthogonal multiplexing and frequency separation of channels / 2278474In accordance to method, first series of preamble is generated, wherein odd data of input series of preamble are transformed to zero data, and even data of aforementioned series are transformed to nonzero data, first series of preamble is transmitted through one of two antennas, second preamble series is generated, wherein even data of input series of preamble are transformed to zero data, and odd data of aforementioned series are transformed to nonzero data, second series of preamble is transmitted through another antenna. |
 Method and device for receiving pseudorandom operating frequency tuning signals / 2280326Device implementing proposed method designed for use in pseudorandom operating frequency tuning radio communication systems and in monitoring systems of the latter has first and second band filers 1 and 3, respectively, first and second multipliers 2 and 16, respectively, demodulator 4, first, second, third, and fourth delay lines 4, 5, 7, and 9, respectively, adjustable frequency synthesizer 6, first, second, third, and fourth spectrum analyzers 10, 11, 12, and 13, respectively, first and second subtracters 14 and 15, respectively, comparator 17, and maximal higher-than-threshold component searching unit 18. |
 Symbol interlacing method / 2292654Method includes selection of operation mode in transmitter from at least one mode, while each operation mode is associated with a number of active carriers for transferring useful data, selection of interlacing symbol in aforementioned selected operation mode, usage of symbol interlacing in transmitter in relation with data element blocks, display of interlaced elements of data on active carriers of aforementioned selected operation mode, receipt of interlaced data elements in receiver, recognition in receiver of symbol interlacing symbol used during data transfer, selection of reversed interlacing symbol in receiver for match with recognized interlacing symbol and reverse interlacing in receiver of received data elements by means of selected reverse interlacing symbol. |
 Digital mutli-frequency transmitter / 2292658In digital multi-frequency transmitter-receiver during receipt signals are simultaneously decimated and roughly converted with frequency decrease in iteration process for narrowing received broad range of frequency down to required channel, and during transmission signals are interpolated iteratively for receiving required frequency of digitization and width of frequency band. |
 Mode and an arrangement for definition of logarithmical likelihood ratio with preliminary coding / 2304352The technical result is reduction of the effect of multiplication of errors achieved because multitude of signal elements is received. At that the signal element contains the totality of modulation symbols out of the totality of coded bits, the first subset of signal elements for which the bit has the first meaning and the second subset of signal elements for which the bit has the second meaning are defined. At that the first and the second subsets are signal elements out of an extended signal group. The probability that the bit equals the first meaning or the second meaning depending from the received signal element is defined, then the symbol of flexible decision of possibility that the bit equals the first meaning or the second meaning is defined. At that the symbols of flexible decision may be represented by the logarithmical likelihood ratios. |
FIELD: radio engineering, communication.
SUBSTANCE: invention particularly discloses a method which involves: configuring a subframe of a time division duplex (TDD) relay frame for a subframe of relay link (S201). Configuring the subframe of the TDD relay frame for the subframe of relay link involves: configuring a downlink (DL) subframe of the TDD relay frame for a DL subframe of relay link, and/or configuring the DL subframe of the TDD relay frame for an uplink (UL) subframe of relay link, and/or configuring a UL subframe of the TDD relay frame for the UL subframe of relay link; and performing relay transmission according to the subframe of relay link (S202). When data is transmitted, a subframe that can be used for relay link transmission is configured, data transmission performed by using relay link complies with inherent constraints of a TDD frame structure in the prior art. Coverage of the system using the TDD relay frame is therefore expanded.
EFFECT: high throughput owing to a relay node performing time division duplex relay transmission.
10 cl, 16 dwg
The technical field to which the invention relates
The present invention relates to the field of communication technologies and, in particular to a method and apparatus for relay transmission.
The level of equipment
With the development of wireless technologies increasing requirements for connection speeds and connection quality. Although wired transfer to some extent meet the requirements for the connection speed and the quality of the connection, wire transfer requires the operator to lay fiber optic cables, or rent a cable resources, which restricts the use of wire transfers. This problem can be solved effectively by using relay for wireless transit signal. Implementation relay technology can extend the coverage of the honeycomb, to increase the capacity of the cell and to achieve a uniform throughput cell. The introduction of the relay can also lead to change of structure frame of the original system.
Figure 1 shows a schematic representation of the structure of the relay frame for prior art, and the structure frame relay applicable to full duplex time division of channels (TDD). Refer to figure 1, where the base station (for example, the advanced base node (eNB)) and repeater node/repeater (RN)and RN and user equipment (UE) communicate through subtitrov 1 through 4. 1 use the relay transmission downlink (DL) from eNB on the repeater, 2 are used for transmission line access DL from the repeater to the UE, 3 use the relay transmission on the uplink connection (UL) from the repeater to eNB, and 4 are used for transmission line access UL from UE to the repeater.
However, it is clear that prior art has at least the following problem.
In the existing relay system when performing data transfer in accordance with the structure of TDD frame in the prior art relayed transfer may not be performed.
Summary of the invention
The present invention is directed to the method and the device relay transmission to RN in the system TDD could perform relayed transfer. The stated objectives of the present invention are realized, as disclosed in the claims.
To achieve the above goals variant of the implementation of the present invention provides a method relay transmission, the method includes:
configuring frame relay TDD for relay line and configuring frame relay TDD for relay line includes: configuring DL frame relay TDD for DL relay lines and/or configuring DL frame relay TDD for UL relay lines and/or configuring UL relay frame for TDD UL relay lines; and
running a relay transmission in accordance with relay lines.
Variant of the implementation of the present invention provides a communication device, and the device connection includes:
the configuration module configured for configuring frame relay TDD for relay line and configuring frame relay TDD for relay line includes: configuring DL frame relay TDD for DL relay lines and/or configuring DL frame relay TDD for UL relay lines and/or configuring UL frame relay TDD for UL relay lines; and
transmitting module configured to perform a relay transmission in accordance with relay lines configured by the configuration module.
Technical solutions according to the options of the implementation of the present invention, when the communications device transmits data, configured , which can be used to transfer relay lines, data transfer is performed through the use of a relay line corresponds to the limitations inherent in the structure of TDD frame in the prior art, and extend the coverage of the system, using frame relay TDD, thus increasing the throughput.
Brief description of drawings
For clearer illustration of technical solutions according to the options of the implementation of the present invention or prior art, the following accompanying drawings for the description of embodiments or prior art. Obviously, accompanying the drawings in the following instructions, refer only to some options for the implementation of the present invention, and specialists in a given field of technology can, without any creative effort to bring other drawings that are different from those of the accompanying drawings.
Figure 1 - schematic view of the structure of frame relay in the prior art;
figure 2 - block diagram of the way relayed transfer in accordance with the option of implementing the present invention;
figure 3 - schematic view of communication TDD without using patterns frame relay transmission, introduced under variant of the implementation of the present invention;
4 is a schematic view of the structure of the frame, where as a relay line is the full , according to option the implementation of the present invention;
5 is a schematic view of the structure of the frame, where as a relay line DL uses the original DL, and as a relay lines UL uses the original UL under variant of the implementation of the present invention;
6 is a schematic view of structure frame system, which includes eNB, RN and UE, according to option the implementation of the present invention;
Fig.7 - schematic view of the structure of frame according to the variant of the implementation of the present invention;
Fig - schematic view of the other patterns frame under variant of the implementation of the present invention;
Fig.9 - schematic view of another structure frame under variant of the implementation of the present invention;
figure 10 - schematic view of the following structure frame under variant of the implementation of the present invention;
11 - schematic view of the other the structure of frame according to the variant of the implementation of the present invention;
Fig - schematic view of another structure frame under variant of the implementation of the present invention;
Fig - schematic view of the following structure frame under variant of the implementation of the present invention;
Fig - schematic view of the other patterns frame under variant of the implementation of the present invention;
Fig - schematic view of another structure frame under variant of the implementation of the present invention; and
Fig - schematic structural performance communication devices according to option the implementation of the present invention.
Detailed description of embodiments
Further, with reference to the accompanying drawings should be clear and complete description of the technical solutions present invention. It is obvious that the described variants of implementation represent only a part, but not all possible embodiments of the present invention. The specialists in the art, without any creative effort, will be able, on the basis of the listed options for the implementation, display of other options for implementation, and all the options of implementation are covered by the scope of legal protection of the present invention.
Figure 2 shows the block diagram of a method relay transmission under variant of the implementation of the present invention, and, as shown in figure 2, the way relayed transfer involves the following stages.
At the stage S201 configured frame relay TDD for relay lines.
Configuring frame relay TDD for relay line includes: configuring DL frame relay TDD for DL relay lines and/or configuring DL frame relay TDD for UL relay lines and/or configuring UL frame relay TDD for UL relay lines.
At the stage S202 is relayed transfer in accordance with relay lines.
When performing a relayed transfer in accordance with the configured relay lines, if UL relay lines or DL relay line uses DL relay frame, for transmission access line between RN and UE served RN, or between eNB and UE served eNB, are configurable N characters multiplexing orthogonal frequency division multiplexing (OFDM) DL, and they are configured to make reference signal DL or reference signal DL and control signaling. Other characters OFDM DL are used for transmission over relay lines and/or for the protection period (GP), that is the time other than the first N characters of OFDM DL, used for transmission over relay lines and/or GP.
DL includes M characters OFDM, where M and N is a natural number, and N is less M.
Technical solution provided in this embodiment of the present invention can be used in systems such as the Project long term evolution (LTE)advanced Project LTE LTE-A), all versions of LTE (such as Rel-8, Rel-9 and Rel-10), world-compliant system for microwave access (WiMax) and system ultrawideband wireless (UWB).
For example, in the system LTE LTE-A communication device transfers data in accordance with retransmission TDD frame. Each relay frame TDD includes 10 subtitrov, and the length of each frame is 10 MS, and the length of each is 1 MS. Relay frame TDD LTE LTE-a includes relay lines, access line and the GP. relay line is one or more subtitrov. access line also takes one or more subtitrov. GP is part of a special TDD LTE LTE-A or GP is part of relay lines. The relationship between eNB and UE served eNB carried out in accordance with relay lines; and/or in accordance with relay line is the connection between eNB and RN; and/or in accordance with relay line is the connection between RN and UE served RN. When eNB or RN performs relay transmission, can be used footage TDD with the same ratio subtitrov DL and subtitrov UL, either can be used footage same configuration. GP, in particular, includes the transition from a condition of admission to state transfer and waiting time. The transition from a condition of admission to state transfer is a time of transition from a state reception in the communication status of eNB and/or time of transition from a state reception in the communication status of RN. GP is an integer multiple of the time discretization, GP or equal to the time when the number of sampling points is the divider of the number of points Fourier transform, and the number of sampling points equal to the number of points Fourier transform/2 ∧ n, where n is a natural number. Or GP can also get at least among the cyclic prefix OFDM symbol, and/or symbols, OFDM and/or . Or GP regulated when the alarm transmitter and receiver.
For all embodiments of the present invention in all the accompanying drawings D represents for DL, U represents for UL and S represents a special in the system LTE LTE-A TDD. Special includes time slot pilot signal downlink (DwPTS), time slot, pilot signal uplink connection (UpPTS) and GP. Similarly, in all tables D represents DL, U represents UL, and S represents a special slot DwPTS, slot UpPTS and GP.
In the structure of frame relay TDD, if UE sends a shared channel uplink connection (PUSCH) n, UE takes a physical channel (PHICH) display hybrid automatic request for a repetition of transmission (HARQ) in the k-th after n, that is, in the (n+k)-m DL, where the value of n and k (k values shown in the configuration lines 0-6) is given in table 1.
Table 1Configuration TDD UL/DL
n
0 1 2 3 4 5 6 7 8 9 0 4 7 6 4 7 6 1 4 6 4 6 2 6 6 3 6 6 6 4 6 6 5 6 6 4 6 6 4 7For example, in table 1 for the 3rd (n=3) in frame 0 configuration line k, respectively, equal to 7; UE sends in the 3rd PUSCH and takes the 0-th (3+7) next frame PHICH. For other configurations, for example, in the 1st configuration line k, respectively, equal to 6; and UE sends in the 3rd PUSCH and takes the 9th (3+6) PHICH.
In the structure of frame relay TDD, if UE takes a shared channel downlink (PDSCH) n, UE sends in n+k confirmation/negative acknowledgement (ACK/NACK), where n and k (k values shown in the configuration lines 0-6) is shown in table 2.
Table 2Configuration
n
0 1 2 3 4 5 6 7 8 9 0 4 6 - - - 4 6 - - - 1 7 6 - - 4 7 6 - - 4 2 7 6 - 4 8 7 6 - 4 8 3 4 11 - - - 7 6 6 5 5 4 12 11 - - 8 7 7 6 5 4 5 12 11 - 9 8 7 6 5 4 13 6 7 7 - - - 7 7 - - 5For example, in table 2 for 3rd (n=3) in the frame of the 2nd configuration line k, respectively, equal to 4; UE accepts 3rd PDSCH and sends in the 7th (3+4) ACK/NACK. For other configurations, for example, in the 5th configuration line k, respectively, equal to 9; and UE accepts 3rd UL PDSCH and sends in the 2nd (3+9) the next frame ACK/NACK.
In the structure of frame relay TDD, if UE takes allocation UL/PHICH in n (send data UL/or ACK/NACK PUSCH UL), UE sends PUSCH in n+k. Table 3 shows the relationship of conformity between the allocation UL/PHICH and PUSCH (in the following tables highlight UL may be replaced by PHICH, which is then re not specified).