CN102655489A - Collaborative relay system and transmission method - Google Patents
Collaborative relay system and transmission method Download PDFInfo
- Publication number
- CN102655489A CN102655489A CN2011100534128A CN201110053412A CN102655489A CN 102655489 A CN102655489 A CN 102655489A CN 2011100534128 A CN2011100534128 A CN 2011100534128A CN 201110053412 A CN201110053412 A CN 201110053412A CN 102655489 A CN102655489 A CN 102655489A
- Authority
- CN
- China
- Prior art keywords
- data
- user terminal
- base station
- relay station
- inverted sequence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
The invention provides a collaborative relay system and a transmission method. The method comprises the following steps: a base station sends data to a relay station and a user terminal in a first hop; when the relay station receives the data successfully, the base station and the relay station carry out inverted-sequence processing in a second hop and send the data to the user terminal. According to the collaborative relay transmission method, in the first hop, the base station is not only communicated with the relay station, but also is communicated with the user terminal, so that the resources in first-hop transmission is fully utilized; while the user terminal receives same data in two hops, and further combines the received data, so that the diversity effect is achieved and the receiving performance is improved; simultaneously, in the second hop, after being processed by inverted sequence, the data is sent, so that the modulation of different mapping modes is realized, the effect of average-bit reliability is realized, the optimization of the overall transmission performance is achieved; and the implementation is simple and the compatibility is strong.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of collaborative relay system and transmission method.
Background technology
The demand for development of following radio communication realizes that wide area covers continuously, supports the transmission of higher rate.Relaying technique is as a kind of emerging technology, and senior (Long Term Evolution-Advanced LTE-Advanced) is considered to a kind of better candidate scheme of improving throughput of system or area coverage in the system at Long Term Evolution.This has opened up wide prospect for the application of relaying technique, also wireless communication technology has been proposed new challenge simultaneously.
In radio communication, the multipath fading of signal is a serious problem, and diversity technique is a method preferably that overcomes it.Space diversity (being antenna diversity) technology can be united other diversity techniques owing to it, like time diversity and frequency diversity, and especially noticeable.The space diversity reception to communicate of the increase physical antenna that contrast is conventional; Space diversity reception to communicate based on collaborative relaying; Through its antenna of a plurality of terminals share and corresponding communication resource, can be issued to same effect in the situation that does not increase physical antenna, thereby can practice thrift communications cost widely.
In the research about collaborative relaying, consider that maximum application scenarioss is that a base station, a relay station are the scene of a downlink user terminal service at present.And under this scene, it is better to it has been generally acknowledged that the communication efficiency of relay station is arrived in the base station, and the base station is relatively poor to the communication efficiency of user terminal to user terminal and relay station, therefore on these two passages, introduces collaborative transmission, with raising overall transfer performance; Wherein collaborative retransmission protocol is based on above-mentioned scene and a kind of simple retransmission protocol of designing.
In the implementation of existing collaborative relay transmission; A kind of is according to collaborative retransmission protocol, and at first data are sent to user terminal and relay station in the base station, retransmit if user terminal receives wrong and requires; Then retransmission frame is by base station and the collaborative transmission of relay station, to improve the transmission performance of retransmission frame.Obviously, owing to have only when direct transferring path appearance mistake, just by base station, the collaborative Frame that retransmits the appearance mistake of relay station, thereby when channel condition was better, the utilance of relaying was lower in the collaborative retransmission scheme.
A kind of in addition collaborative relay transmission scheme is called two hop, schemes again, and in this scheme, all accomplish through twice transmission with communicating by letter of user terminal all the time the base station, and wherein, each transmission is referred to as a jumping.First to jump be the transmission from the base station to the relay station, and second to jump be the collaborative transmission to user terminal of base station and relay station.Though above-mentioned two hop, schemes has been utilized the communication efficiency good advantage of base station to relay station, and in each transmission, the transmission between base station and the user terminal has all used collaborative transmission, has improved the utilance of relay station; But first jumps in this two hop, schemes, and the base station only communicates with relay station, and does not have and user terminal communication, makes user terminal can not make full use of the resource of first jump set when defeated, has caused the wasting of resources, has reduced the reliability of total transmission.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of collaborative relay system and transmission method, has promoted the reliability and the capacity of system transmissions.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of collaborative relay transmission method, said method comprises:
The base station sends data to relay station and user terminal in first jumps;
When relay station received the data success, base station and relay station were sent to user terminal after in second jumps, data being carried out the inverted sequence processing.
Wherein, said base station and relay station carry out data in second jumps after inverted sequence handles, and are sent to user terminal and are:
Base station and relay station carry out coded data in second jumps after inverted sequence handles, and modulate, insert after pilot tone, orthogonal frequency division multiplex OFDM send and handle, and the data that obtain are sent to user terminal.
Wherein, said base station and relay station carry out inverted sequence with the data of chnnel coding and are treated to:
The order of data is put upside down in base station and the relay station Frame after with chnnel coding; Perhaps,
Base station and the relay station Frame after with chnnel coding carries out inverted sequence in the required bit number of modulation handles, and the order of data in the said bit number is put upside down.
Wherein, said base station sends data to user terminal and is in first jumps:
The base station to data add frame quality inspection sequence, chnnel coding, modulation, insert pilot tone and OFDM send handle after, the data after will handling through radio wave are sent to user terminal.
Further, the base station sent data to user terminal and relay station in first jumps after, said method also comprised:
User terminal carries out soft demodulation to the data that first jumper connection is received, and the soft demodulating data that will obtain deposits buffer in.
Further, base station and relay station were sent to user terminal with data in second jumps after, said method also comprised:
The merging data that base station that user terminal is received second jumper connection and relay station are sent carries out soft demodulation, and the data after the soft demodulation is carried out inverted sequence handle;
Read the soft demodulating data that is stored in buffer, the soft demodulating data that the soft demodulating data and second of first jumping is jumped after inverted sequence is handled carries out addition, deciphers again.
A kind of collaborative relay system, said system comprises: base station, relay station and user terminal; Wherein,
The base station is used for jumping first and sends data to relay station and user terminal, and when relay station receives the data success, in second jumps, said data are carried out the inverted sequence processing after, be sent to user terminal;
Relay station receives the data that send the base station in first jumps, when receiving the data success, in second jumps, data are carried out being sent to user terminal after inverted sequence handles.
Further, said base station specifically is used for jumping second and coded data is carried out after inverted sequence handles, and modulates, inserts after pilot tone, OFDM send and handle, and the data that obtain are sent to user terminal;
Correspondingly, said relay station also is used for jumping second and coded data is carried out after inverted sequence handles, and modulates, inserts after pilot tone, OFDM send and handle, and the data that obtain are sent to user terminal.
Further, said base station specifically is used for the order of the Frame data after the chnnel coding is put upside down; Perhaps, the Frame after the chnnel coding is carried out inverted sequence handle in the required bit number of modulation, the order of data in the said bit number is put upside down;
Correspondingly, said relay station specifically is used for the order of the Frame data after the chnnel coding is put upside down; Perhaps, the Frame after the chnnel coding is carried out inverted sequence handle in the required bit number of modulation, the order of data in the said bit number is put upside down.
Further, said base station specifically is used for jumping first, to data add frame quality inspection sequence, chnnel coding, modulation, insert pilot tone and OFDM send handle after, the data after will handling through radio wave are sent to user terminal.
Further, said user terminal, the data that also are used for first jumper connection is received are carried out soft demodulation, and the soft demodulating data that will obtain deposits buffer in.
Further, said user terminal, the merging data that base station that also is used for second jumper connection is received and relay station are sent carries out soft demodulation, and the data after the soft demodulation is carried out inverted sequence handle; Read the soft demodulating data that is stored in buffer, the soft demodulating data that the soft demodulating data and second of first jumping is jumped after inverted sequence is handled carries out addition, deciphers again.
Collaborative relay transmission method provided by the invention, in first jumped, the base station not only communicated with relay station, also communicates with user terminal, had made full use of the resource when first jump set is defeated; And user terminal all receives identical data in double bounce, and then the data that receive are merged, and reaches diversity; Improved the performance that receives, simultaneously, in second jumps, data have been carried out sending after inverted sequence is handled; Realize the modulation of different mappings mode, realized the effect of average bit reliability, reached the total transmission optimization in Properties; And, realize simple, compatible strong.
Description of drawings
Fig. 1 is the double bounce transmission sketch map of the collaborative relay system of the present invention;
Fig. 2 is the schematic flow sheet of the collaborative relay transmission method of the present invention;
Fig. 3 is the schematic flow sheet of the specific embodiment of the collaborative relay transmission method of the present invention;
Fig. 4 is the process sketch map of data processing in first jumping in the collaborative relay transmission method of the present invention;
Fig. 5 is the process sketch map of data processing in second jumping in the collaborative relay transmission method of the present invention.
Embodiment
Basic thought of the present invention is: the base station sends data to relay station and user terminal in first jumps; When relay station received the data success, base station and relay station were sent to user terminal after in second jumps, data being carried out the inverted sequence processing.
For making the object of the invention, technical scheme and advantage clearer, below lift embodiment and, the present invention is further explained with reference to accompanying drawing.
Fig. 1 shows the double bounce transmission signal of the collaborative relay system of the present invention, and as shown in Figure 1, collaborative relay system provided by the invention comprises base station, relay station and user terminal; The base station sends data to relay station and user terminal respectively in first jumps; When relay station is checked the success of reception data; Then base station and relay station carry out the transmission of the second jumping figure certificate; Be specially the data of the base station being sent by the first jumping base station and carry out reverse process; After the data that relay station will receive in first jumps were carried out the inverted sequence processing, base station and relay station were sent to user terminal respectively with the data that processing obtains.
Wherein, in the data transmission procedure that first jumps, when relay station is checked the reception data failure,, require the base station to carry out the transmission of data again through the upward signal feedback signaling.
Fig. 2 shows the flow process of the collaborative relay transmission method of the present invention, and as shown in Figure 2, said method comprises the steps:
Particularly, carry out data after the chnnel coding during base station and relay station are jumped second and carry out inverted sequence and handle, send into modulator then and modulate, insert after pilot tone, orthogonal frequency division multiplex OFDM send and handle, the data collaborative that obtains is sent to user terminal.
Fig. 3 shows the flow process of the specific embodiment of the collaborative relay transmission method of the present invention, and as shown in Figure 3, said embodiment comprises the steps:
Concrete; In this step, in first jumps, the base station before sending data to the base band signal process process of data with reference to Fig. 4; At first in Frame, insert one section sequence that is used for this frame correctness of verification, wherein this verification sequence can be the Cyclic Redundancy Check sequence; Then Frame is carried out chnnel coding, make that the Frame behind the coding has certain error correcting capability, wherein chnnel coding can be low density parity check code (LDPC) or turbo sign indicating number; According to bit value mapping modulation constellation, the data after the chnnel coding are modulated, wherein, concrete modulation can (Quadrature Amplitude Modulation QAM) modulates, and modulates like 16-QAM for the high-order orthogonal amplitude modulation(PAM) again; Again data are inserted pilot tone and handle, promptly insertion portion given data in the Frame after modulation is used for carrying out channel estimating at receiving terminal; Carry out OFDM at last and send to handle, utilize narrow band signal that inversefouriertransform becomes broadband signal quadrature,, form radio wave and send to relay station and user terminal through after the radio frequency processing with anti-multipath and multiuser multiplexing.
After step 302～step 303, relay station were handled the data that receive, whether check received success, and user terminal deposits buffer in after the data that receive are handled, when relay station receives the data success, and execution in step 304;
Concrete; After relay station receives the signal of sending the processing base station through radio-frequency head; Send into base band signal process; Specifically with reference to Fig. 4; Accomplish conventional OFDM reception, channel estimation process by base band signal process; Again the data after handling are carried out soft demodulation; Afterwards, data are admitted to decoder and carry out soft decoding, afterwards based on this correctness of data frame of CRC check of inserting in the data; When Frame is correct; Then relay station receives the data success, execution in step 304, otherwise; Relay station requires the base station to retransmit through the up channel feedback signaling;
Wherein, radio-frequency head receive to be handled and to be comprised and utilize Fourier transform to become the narrow band signal of quadrature again broadband signal and the multi-user separates in the said process;
Channel estimating is according to the reception condition of inserting pilot tone, estimates the current characteristic of channel;
Soft being demodulated into according to receiving the reliability information that signal obtains modulation symbol mapping corresponding bit; Wherein, bit reliability information can be that 0 probability and this bit are the logarithm value of the ratio of 1 probability for this bit, also can be 0 or be 1 probable value for this bit;
Soft decoding is meant according to the bit reliability information of input decoder, and coded data is carried out error correcting, and the reliability of back bit is corrected in output;
According to the CRC sequence of inserting in the transmit frame, check this correctness of data frame during the correctness of check data frame, the concrete method of inspection can be cyclic redundancy check sequence check method;
Up channel is meant and is used for transmitting the communication channel of giving the base station from relay station transmission data, in addition, also can become up channel for the communication channel of base station from user terminal transmission data; Said repeating transmission is meant that the base station carries out identical data transmission procedure last time again.
In like manner; After user terminal receives and handles the signal of sending the base station through self radio-frequency head, send into base band signal process, the processing procedure of concrete processing procedure and relay station is similar; Different is; After user terminal carried out soft demodulation to the data that receive, the data that soft demodulation is obtained deposited in the buffer, wouldn't carry out subsequent treatment.
Concrete, in this step, in second jumps, the base station before sending data to the base band signal process process of data with reference to Fig. 5, at first in Frame, insert one section sequence that is used for this frame correctness of verification, wherein this verification sequence can be the CRC sequence; Then Frame is carried out chnnel coding, make that the Frame behind the coding has certain error correcting capability, wherein chnnel coding can be LDPC or turbo sign indicating number; Then the bit after the chnnel coding is carried out inverted sequence and handle, be specially the order of data in the Frame after the chnnel coding is put upside down,, by that analogy, the data before coming the most originally are put at last coming originally before last data are put into; Perhaps, the Frame after the chnnel coding is carried out inverted sequence handle in the required bit number in subsequent brew, the order of data in the said bit number is put upside down, rather than in whole Frame, carried out inverted sequence; Then, according to bit value mapping modulation constellation, the data after the inverted sequence processing are modulated, wherein, concrete modulation can be modulated for high-order QAM, modulates like 16-QAM again; Again the data after the modulation are inserted pilot tone processing, i.e. insertion portion given data in said Frame, being used for receiving terminal carries out channel estimating; Carry out OFDM at last and send to handle, utilize narrow band signal that inversefouriertransform becomes quadrature with broadband signal with anti-multipath, and multiuser multiplexing, through after the radio frequency processing, form radio wave and send to user terminal;
In like manner, relay station is identical with above-mentioned base station to the processing of data in second jumps, and repeats no more.
Concrete, in this step, user terminal receives through self radio-frequency head and handles the merging data that base station and relay station send; Send into base band signal process,, accomplish conventional OFDM reception, channel estimation process by base band signal process specifically referring to Fig. 5; Again the data after handling are carried out soft demodulation; Afterwards, the data after the soft demodulation are carried out inverted sequence handle, should be noted that; It is consistent that the inverted sequence is here handled the inverted sequence processing of being carried out in the time of should sending data with base station in second jumping and relay station, obtains the soft demodulating data after inverted sequence is handled.
Wherein, radio-frequency head receive to be handled and to be comprised and utilize Fourier transform to become the narrow band signal of quadrature again broadband signal and the multi-user separates in the said process;
Channel estimating is according to the reception condition of inserting pilot tone, estimates the current characteristic of channel;
Soft being demodulated into according to receiving the reliability information that signal obtains modulation symbol mapping corresponding bit; Wherein, bit reliability information can be that 0 probability and this bit are the logarithm value of the ratio of 1 probability for this bit, also can be 0 or be 1 probable value for this bit.
Concrete, soft demodulating data adds up to the real number addition, and data are admitted to decoder and carry out soft decoding; Afterwards according to this correctness of data frame of CRC check of inserting in the data; When Frame was correct, then user terminal received the data success, otherwise; User terminal requires base station and relay station to retransmit through the up channel feedback signaling;
Wherein, soft decoding is meant according to the bit reliability information of input decoder, and coded data is carried out error correcting, and the reliability of back bit is corrected in output;
According to the CRC sequence of inserting in the transmit frame, check this correctness of data frame during the correctness of check data frame, the concrete method of inspection can be cyclic redundancy check sequence check method;
Up channel is meant and is used for transmitting the communication channel of giving the base station from relay station transmission data, in addition, also can become up channel for the communication channel of base station from user terminal transmission data; Said repeating transmission is meant that the base station carries out identical data transmission procedure last time again.
The present invention also provides a kind of collaborative transmission system, and said system comprises: base station, relay station and user terminal; Wherein,
The base station is used for jumping first and sends data to relay station and user terminal, and when relay station receives the data success, in second jumps, said data are carried out the inverted sequence processing after, be sent to user terminal;
Relay station receives the data that send the base station in first jumps, when receiving the data success, in second jumps, data are carried out being sent to user terminal after inverted sequence handles.
Further, said base station also is used for after the inverted sequence processing is carried out coded data in second jumping; After modulating, insert pilot tone, OFDM transmission processing, the data that obtain are sent to user terminal, particularly; In second jumps; The base station before sending data to the base band signal process process of data with reference to Fig. 5, at first in Frame, insert one section sequence that is used for this frame correctness of verification, wherein this verification sequence can be the CRC sequence; Then Frame is carried out chnnel coding, make that the Frame behind the coding has certain error correcting capability, wherein chnnel coding can be LDPC or turbo sign indicating number; Then the bit after the chnnel coding being carried out inverted sequence handles; Then, according to bit value mapping modulation constellation, the data after the inverted sequence processing are modulated, wherein, concrete modulation can be modulated for high-order QAM, modulates like 16-QAM again; Again the data after the modulation are inserted pilot tone processing, i.e. insertion portion given data in said Frame, being used for receiving terminal carries out channel estimating; Carry out OFDM at last and send to handle, utilize narrow band signal that inversefouriertransform becomes quadrature with broadband signal with anti-multipath, and multiuser multiplexing, through after the radio frequency processing, form radio wave and send to user terminal;
Correspondingly, said relay station also is used for after the inverted sequence processing is carried out coded data in second jumping; After modulating, insert pilot tone, OFDM transmission processing; The data that obtain are sent to user terminal, and concrete processing procedure and the above-mentioned base station processing procedure in second jumps is similar, repeats no more.
Wherein, said base station specifically is used for the order of the Frame data after the chnnel coding is put upside down; Perhaps, the Frame after the chnnel coding is carried out inverted sequence handle in the required bit number of modulation, the order of data in the said bit number is put upside down; Correspondingly, said relay station specifically is used for the order of the Frame data after the chnnel coding is put upside down; Perhaps; Frame after the chnnel coding is carried out inverted sequence handle in the required bit number of modulation, the order of data in the said bit number is put upside down, wherein; Above-mentioned inverted sequence is handled to be specially the order of data in the Frame after the chnnel coding is put upside down; With coming originally before last data are put into, by that analogy, the data before coming the most originally are put into foot after; Perhaps, the Frame after the chnnel coding is carried out inverted sequence handle in the required bit number in subsequent brew, the order of data in the said bit number is put upside down, rather than in whole Frame, carried out inverted sequence.
Further, said base station specifically is used for jumping first, to data add frame quality inspection sequence, chnnel coding, modulation, insert pilot tone and OFDM send handle after, the data after will handling through radio wave are sent to user terminal; Particularly, at first in Frame, insert one section sequence that is used for this frame correctness of verification, wherein this verification sequence can be the CRC sequence; Then Frame is carried out chnnel coding, make that the Frame behind the coding has certain error correcting capability, wherein chnnel coding can LDPC or turbo sign indicating number; According to bit value mapping modulation constellation, the data after the chnnel coding are modulated, wherein, concrete modulation can be modulated for QAM, modulates like 16-QAM again; Again data are inserted pilot tone and handle, promptly insertion portion given data in the Frame after modulation is used for carrying out channel estimating at receiving terminal; Carry out OFDM at last and send to handle, utilize narrow band signal that inversefouriertransform becomes broadband signal quadrature,, form radio wave and send to relay station and user terminal through after the radio frequency processing with anti-multipath and multiuser multiplexing.
Wherein, said user terminal, the data that also are used for first jumper connection is received are carried out soft demodulation; And the soft demodulating data that will obtain deposits buffer in, particularly, user terminal through radio-frequency head receive handle the signal of sending the base station after; Send into base band signal process,, accomplish conventional OFDM reception, channel estimation process by base band signal process specifically referring to Fig. 4; Again the data after handling are carried out soft demodulation, deposit the soft demodulating data that obtains in buffer.
Wherein, said user terminal, the merging data that base station that also is used for second jumper connection is received and relay station are sent carries out soft demodulation, and the data after the soft demodulation is carried out inverted sequence handle; Read the soft demodulating data that is stored in buffer, the soft demodulating data that the soft demodulating data and second of first jumping is jumped after inverted sequence is handled carries out addition, deciphers again; Concrete, soft demodulating data adds up to the real number addition, and data are admitted to decoder and carry out soft decoding; Afterwards according to this correctness of data frame of CRC check of inserting in the data; When Frame was correct, then user terminal received the data success, otherwise; User terminal requires base station and relay station to retransmit through the up channel feedback signaling; Wherein, soft decoding is meant according to the bit reliability information of input decoder, and coded data is carried out error correcting, and the reliability of back bit is corrected in output; According to the CRC sequence of inserting in the transmit frame, check this correctness of data frame during the correctness of check data frame, the concrete method of inspection can be cyclic redundancy check sequence check method; Up channel is meant and is used for transmitting the communication channel of giving the base station from relay station transmission data, in addition, also can become up channel for the communication channel of base station from user terminal transmission data; Said repeating transmission is meant that the base station carries out identical data transmission procedure last time again.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (12)
1. collaborative relay transmission method is characterized in that said method comprises:
The base station sends data to relay station and user terminal in first jumps;
When relay station received the data success, base station and relay station were sent to user terminal after in second jumps, data being carried out the inverted sequence processing.
2. method according to claim 1 is characterized in that, said base station and relay station carry out data in second jumps after inverted sequence handles, and is sent to user terminal and is:
Base station and relay station carry out coded data in second jumps after inverted sequence handles, and modulate, insert after pilot tone, orthogonal frequency division multiplex OFDM send and handle, and the data that obtain are sent to user terminal.
3. method according to claim 2 is characterized in that, said base station and relay station carry out inverted sequence with the data of chnnel coding and be treated to:
The order of data is put upside down in base station and the relay station Frame after with chnnel coding; Perhaps,
Base station and the relay station Frame after with chnnel coding carries out inverted sequence in the required bit number of modulation handles, and the order of data in the said bit number is put upside down.
4. according to each described method of claim 1 to 3, it is characterized in that said base station sends data to user terminal and is in first jumps:
The base station to data add frame quality inspection sequence, chnnel coding, modulation, insert pilot tone and OFDM send handle after, the data after will handling through radio wave are sent to user terminal.
5. according to each described method of claim 1 to 3; It is characterized in that; The base station sends data to user terminal and relay station in first jumps after; Said method also comprises: user terminal carries out soft demodulation to the data that first jumper connection is received, and the soft demodulating data that will obtain deposits buffer in.
6. according to each described method of claim 1 to 3, it is characterized in that base station and relay station were sent to user terminal with data in second jumps after, said method also comprised:
The merging data that base station that user terminal is received second jumper connection and relay station are sent carries out soft demodulation, and the data after the soft demodulation is carried out inverted sequence handle;
Read the soft demodulating data that is stored in buffer, the soft demodulating data that the soft demodulating data and second of first jumping is jumped after inverted sequence is handled carries out addition, deciphers again.
7. a collaborative relay system is characterized in that, said system comprises: base station, relay station and user terminal; Wherein,
The base station is used for jumping first and sends data to relay station and user terminal, and when relay station receives the data success, in second jumps, said data are carried out the inverted sequence processing after, be sent to user terminal;
Relay station receives the data that send the base station in first jumps, when receiving the data success, in second jumps, data are carried out being sent to user terminal after inverted sequence handles.
8. system according to claim 7 is characterized in that, said base station specifically is used for jumping second and coded data is carried out after inverted sequence handles, and modulates, inserts after pilot tone, OFDM send and handle, and the data that obtain are sent to user terminal;
Correspondingly, said relay station also is used for jumping second and coded data is carried out after inverted sequence handles, and modulates, inserts after pilot tone, OFDM send and handle, and the data that obtain are sent to user terminal.
9. system according to claim 8 is characterized in that, said base station specifically is used for the order of the Frame data after the chnnel coding is put upside down; Perhaps, the Frame after the chnnel coding is carried out inverted sequence handle in the required bit number of modulation, the order of data in the said bit number is put upside down;
Correspondingly, said relay station specifically is used for the order of the Frame data after the chnnel coding is put upside down; Perhaps, the Frame after the chnnel coding is carried out inverted sequence handle in the required bit number of modulation, the order of data in the said bit number is put upside down.
10. according to each described system of claim 7 to 9; It is characterized in that; Said base station; Specifically be used for jumping first, to data add frame quality inspection sequence, chnnel coding, modulation, insert pilot tone and OFDM send handle after, the data after will handling through radio wave are sent to user terminal.
11. according to each described system of claim 7 to 9, it is characterized in that, said user terminal, the data that also are used for first jumper connection is received are carried out soft demodulation, and the soft demodulating data that will obtain deposits buffer in.
12. according to each described system of claim 7 to 9, it is characterized in that, said user terminal, the merging data that base station that also is used for second jumper connection is received and relay station are sent carries out soft demodulation, and the data after the soft demodulation is carried out inverted sequence handle; Read the soft demodulating data that is stored in buffer, the soft demodulating data that the soft demodulating data and second of first jumping is jumped after inverted sequence is handled carries out addition, deciphers again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100534128A CN102655489A (en) | 2011-03-04 | 2011-03-04 | Collaborative relay system and transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100534128A CN102655489A (en) | 2011-03-04 | 2011-03-04 | Collaborative relay system and transmission method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102655489A true CN102655489A (en) | 2012-09-05 |
Family
ID=46731014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100534128A Pending CN102655489A (en) | 2011-03-04 | 2011-03-04 | Collaborative relay system and transmission method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102655489A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111343123A (en) * | 2020-02-28 | 2020-06-26 | 广西华南通信股份有限公司 | Orthogonal frequency division multiplexing dynamic coding method for multi-hop cooperative network communication |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101166055A (en) * | 2006-10-18 | 2008-04-23 | 华为技术有限公司 | Multi-hop relay method and multi-hop relay system |
| US20090068944A1 (en) * | 2007-09-07 | 2009-03-12 | Samsung Electronics Co. Ltd. | Apparatus and method for allocating a dedicated access zone to relay station (rs) in broadband wireless access (bwa) communication system |
| CN101389140A (en) * | 2008-10-31 | 2009-03-18 | 中兴通讯股份有限公司 | Switching method between semi-duplex and multicast collaboration relay scheme and corresponding based station |
| CN101505482A (en) * | 2009-02-23 | 2009-08-12 | 北京邮电大学 | Semi-distribution type resource distribution method and system |
| US20090252082A1 (en) * | 2008-04-07 | 2009-10-08 | Samsung Electronics Co. Ltd. | Apparatus and method for supporting heterogeneous systems in multi-hop relay broadband wireless communication system |
| CN101764781A (en) * | 2007-03-02 | 2010-06-30 | 富士通微电子株式会社 | Amble modulation series |
-
2011
- 2011-03-04 CN CN2011100534128A patent/CN102655489A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101166055A (en) * | 2006-10-18 | 2008-04-23 | 华为技术有限公司 | Multi-hop relay method and multi-hop relay system |
| CN101764781A (en) * | 2007-03-02 | 2010-06-30 | 富士通微电子株式会社 | Amble modulation series |
| US20090068944A1 (en) * | 2007-09-07 | 2009-03-12 | Samsung Electronics Co. Ltd. | Apparatus and method for allocating a dedicated access zone to relay station (rs) in broadband wireless access (bwa) communication system |
| US20090252082A1 (en) * | 2008-04-07 | 2009-10-08 | Samsung Electronics Co. Ltd. | Apparatus and method for supporting heterogeneous systems in multi-hop relay broadband wireless communication system |
| CN101389140A (en) * | 2008-10-31 | 2009-03-18 | 中兴通讯股份有限公司 | Switching method between semi-duplex and multicast collaboration relay scheme and corresponding based station |
| CN101505482A (en) * | 2009-02-23 | 2009-08-12 | 北京邮电大学 | Semi-distribution type resource distribution method and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111343123A (en) * | 2020-02-28 | 2020-06-26 | 广西华南通信股份有限公司 | Orthogonal frequency division multiplexing dynamic coding method for multi-hop cooperative network communication |
| CN111343123B (en) * | 2020-02-28 | 2023-03-14 | 广西华南通信股份有限公司 | Orthogonal frequency division multiplexing dynamic coding method for multi-hop cooperative network communication |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10686512B2 (en) | Adaptive transmission systems and methods | |
| CN107683595B (en) | Constellation superposition system and method | |
| US9007986B2 (en) | MIMO based network coding network | |
| CN102484878B (en) | Uplink control signal design for wireless system | |
| CN102907169B (en) | For adopting the method and apparatus of the bi-directional relaying scheme of physical-layer network coding | |
| US8509136B2 (en) | Network coding method and network coding apparatus | |
| US9143169B2 (en) | Physical broadcast channel (PBCH) transmission for reliable detection of antenna configuration | |
| WO2017161265A1 (en) | System and method for multiuser packets transmissions for relays | |
| US8726131B2 (en) | Spatial multiplexing communication system with enhanced codeword mapping with flexible rate selection on each spatial layer and with single HARQ process | |
| CN105474592A (en) | Systems and methods for a data scrambling procedure | |
| US20110268071A1 (en) | Multiple component carrier ofdma communication system | |
| CN107534508A (en) | Terminal installation and base station apparatus | |
| CN109997326A (en) | With the rate-matched and HARQ irregularly modulated | |
| CN109565351A (en) | Control data transmission scheme | |
| WO2010142334A1 (en) | Code block selection combining in multi point reception up-link data transfer | |
| KR20120129245A (en) | Apparatus and method for transmitting control information supporting coordinated multiple point scheme | |
| CN106464340A (en) | Method for relaying user data orthogonally for different users | |
| CN116034558A (en) | Techniques for transmitting demodulation reference signals using non-coherent modulation | |
| WO2010109282A1 (en) | Apparatus and method for bit remapping in a relay enhanced communication system | |
| CN106302299B (en) | Multi-user access method and device | |
| CN102655489A (en) | Collaborative relay system and transmission method | |
| CN103716278A (en) | Layered transmission in relay communication system | |
| CN107040332A (en) | Base-band resource fusion method, base station and terminal between networks with different systems | |
| CN109495206A (en) | A kind of user that be used to wirelessly communicate, the method and apparatus in base station | |
| CN109495205A (en) | A kind of user that be used to wirelessly communicate, the method and apparatus in base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120905 |
|
| WD01 | Invention patent application deemed withdrawn after publication |