CN101785213A - Combined relaying method and apparatus for a plurality of relay stations in wireless communication network - Google Patents
Combined relaying method and apparatus for a plurality of relay stations in wireless communication network Download PDFInfo
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- CN101785213A CN101785213A CN200780100382A CN200780100382A CN101785213A CN 101785213 A CN101785213 A CN 101785213A CN 200780100382 A CN200780100382 A CN 200780100382A CN 200780100382 A CN200780100382 A CN 200780100382A CN 101785213 A CN101785213 A CN 101785213A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2603—Arrangements for wireless physical layer control
- H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
Abstract
A kind of new combined relaying scheme is provided. A plurality of relay stations taking part in the combined relay carry out weighting process for N links signal in total M links signal, generate N links signal which have been performed weighting process and are to be transmitted and M-N links signal which have not been performed weighting process and are to be transmitted, and transmit them to the next jump device jointly. Hereby, the scheme is different from the simple open loop or close loop mode in the existing technique, and realizes a combination of both. Comparing with the open loop mode, for example, ADSTC, the technique scheme can obtain array gain, and the system performance will be better; and comparing with the closed loop mode, for example, distributed pre-coding, the overhead brought by control signal is smaller, and the base band treating process and the determining process of the weighting factors are simpler.
Description
The method and apparatus technical fields of plurality of relay stations in wireless communication network combined relaying
The present invention relates to the method and device that many relay station joint down hop equipment in wireless relay network, more particularly to wireless relay network send signal.Background technology
Within a wireless communication network, the introducing of relay station contributes to the overlay area of Extended Cell and improves the data throughput of cell.With the development of relaying technique, combined relaying scheme is occurred in that, so-called combined relaying, namely multiple relay stations joint down hop equipment send signal.Using combined relaying technology, the multiple transmitting antennas being distributed on multiple relay stations can realize the gains such as spatial reuse, space diversity.Because there is above-mentioned advantage, combined relaying occupies very important status in junction network.
In the prior art, there are two kinds of schemes for being used to realize many relay station combined relayings, be referred to as open loop approach and closed-loop fashion.
Adapter distribution Space Time Coding (ADSTC) of the most typically ground as shown in figure la in open loop approach, wherein, two relay stations are respectively equipped with transmitting antenna.So that upward signal is transmitted as an example, relay station B, C are receiving upper hop equipment（For example, mobile terminal A) after the signal sent, using Alamoti coded systems, relay station B, C respectively to modulation symbol sequence X, X2, X3... carry out Space Time Coding, and the down hop equipment in the following manner in units of each two symbol and each two time slot（For example, base station D) send signal：
In first time slot, X is sent by relay station B, relay station C sends X2;
In second time slot ,-X is sent by relay station B2*, relay station C is sent
In 3rd time slot, X is sent by relay station B3, relay station C sends X4;
In 4th time slot ,-X is sent by relay station B4*, relay station C sends X3* ;Etc..It is not difficult to find out, based on ADSTC, relay station B, C constitute a distributed testing system system, result in space diversity gain.But, the signal that each relay station is sent does not use any channel information, thus, it is impossible to obtain array gain（Array gain), systematic function has the space further improved.Further, since the encoder matrix that ADSTC is used is 2x2's
Alamouti matrixes, therefore it is only applicable to that two relay stations carry out combined relayings and each relay station only has the situation of a transmitting antenna.In other words, if participating in the relay station more than two of combined relaying, the relay station having more will be idle；If the transmitting antenna sum for participating in each relay station configuration of combined relaying is more than 2, then the antenna having more also will be idle.
In closed-loop fashion most typically as figure l b shown in distributed precoding（Distributed precoding), wherein, two relay stations are respectively equipped with a transmitting antenna.Still so that upward signal is transmitted as an example, relay station B, C, after upper hop equipment such as mobile terminal Α, the signal sent is connected to, using 2 x 2 pre-coding matrix to X X2Carry out precoding.Wherein, the generation of pre-coding matrix depends on channel related information（Such as, each relay station and base station D, between channel response）, the calculating of the matrix generally completes, then corresponding precoding coefficients are notified into corresponding relay station by base station.
Closed-loop fashion shortcoming in a distributed manner exemplified by precoding is as follows：
- due at least needing the corresponding precoding coefficients in transmitting pre-encoding matrix between base station, relay station, therefore, more control signaling expense can be caused on channel；
- relay station needs to perform complex Base-Band Processing, and the corresponding processing complexity for adding receiving terminal.
It can be seen that, it is necessary to a kind of combined relaying scheme more optimized solves above mentioned problem of the prior art.The content of the invention
Have much room for improvement the problems such as having to be reduced with the signaling consumption of closed-loop fashion to solve the performance of open loop approach of the prior art, the invention provides a kind of new combined relaying scheme, wherein, the multiple relay stations for participating in combined relaying are weighted processing to the N roads signal to be sent in common M roads signal to be sent, after the signal to be sent for the not weighted processing of signal to be sent and M-N roads for generating the weighted processing in N roads, joint is sent to next-hop device.Accordingly, the present invention is different from the mode of simple open loop of the prior art or closed loop, realizes the combination of the two.
Preferably, the weighted factor used in the weighting processing（Coefficient）And each relay station is associated with the channel related information between the next-hop device, so as to be conducive to improving
Received signal quality at next-hop device.
To realize above-mentioned technology S, it is used to combine the method that down hop equipment sends signal with other relay stations in the multiple antennas relay station of wireless relay network there is provided a kind of according to the first aspect of the invention, wherein, comprise the following steps：Weighted signal, which is weighted processing, to be treated to one or more in the multiple signals using weight coefficient, to generate the signal to be sent of one or more weighted processing；The signal to be sent of the signal to be sent of one or more weighted processing and the not weighted processing in remaining each road is sent to the next-hop device.
It is used to combine the method that down hop equipment sends signal with other relay stations in the single antenna relay station of wireless relay network there is provided a kind of according to the second aspect of the invention, wherein, comprise the following steps：Weighted signal is treated using weight coefficient to be weighted, to generate the signal to be sent of weighted processing all the way, wherein, the weight coefficient is used to realize that the received signal quality at the next-hop device to be maximized；The signal to be sent of the weighted processing is sent to the next-hop device.
According to the third aspect of the invention we there is provided a kind of method for being used to control multiple relay station joint down hop equipment to send signal in the base station of wireless relay network, wherein, comprise the following steps：Weight coefficient relevant information is provided for one or more of the multiple relay station relay station, the weight coefficient relevant information is weighted processing for treating weighted signal by one or more of relay stations.
It is used to combine the first joint dispensing device that down hop equipment sends signal with other relay stations in the multiple antennas relay station of wireless relay network there is provided a kind of according to the fourth aspect of the invention, wherein, including：First weighting device, for treating that weighted signal is weighted processing to one or more in multiple signals using weight coefficient, to generate the signal to be sent of one or more weighted processing；First sender unit, for the signal to be sent of the signal to be sent of one or more weighted processing and the not weighted processing in remaining each road to be sent to the next-hop device.
It is used to combine the second joint dispensing device that down hop equipment sends signal with other relay stations in the single antenna relay station of wireless relay network there is provided a kind of according to the fifth aspect of the invention, wherein, including：Second weighting device, for utilizing weight coefficient to be added
Power signal is weighted, to generate the signal to be sent of weighted processing all the way, wherein, the weight coefficient is used to realize that the received signal quality at the next-hop device to be maximized；Secondary signal dispensing device, for the signal to be sent of the weighted processing to be sent to the next-hop device.
According to the sixth aspect of the invention, there is provided a kind of control device for being used to control multiple relay station joint down hop equipment to send signal in the base station of wireless relay network, it is characterized in that, including the device for providing weight coefficient relevant information for one or more of the multiple relay station relay station, the weight coefficient relevant information is weighted processing for treating weighted signal by one or more of relay stations.
It is used for the method that many relay stations combine down hop equipment transmission signal in wireless relay network there is provided a kind of according to the seventh aspect of the invention, it is characterised in that comprise the following steps：One or more of the multiple relay station relay station treats that weighted signal is weighted processing to the N roads in the signal of M roads, with the signal to be sent for the not weighted processing of signal to be sent and M-N roads for generating the weighted processing in N roads, wherein, M is the positive integer more than 1, and N is the positive integer more than zero less than M；The multiple relay station sends the signal to be sent of the not weighted processing of the signal to be sent of the weighted processing in N roads and the M-N roads to the next-hop device.
It is used to combine the method that the signal sent is detected by many relay stations to receiving in the network equipment of wireless relay network there is provided a kind of according to the eighth aspect of the invention, it is characterised in that comprise the following steps：Channel related information between with each group of the multiple relay station matching antenna based on present networks equipment, it is the signal generation equivalent channels relevant information transmitted by each group matching antenna and corresponding relay station is used to treat the weight coefficient that weighted signal is weighted；The signal for combining transmission by the multiple relay station received is detected using the equivalent channels relevant information of generation.
It is used to combine the signal supervisory instrument that the signal sent is detected by many relay stations to receiving in the network equipment of wireless relay network there is provided a kind of according to the ninth aspect of the invention, it is characterised in that including：Generating means of equal value, for matching antenna with each group of the multiple relay station based on present networks equipment between channel related information, and corresponding relay station is used to treat the weight coefficient that weighted signal is weighted, and is each group matching day
Signal generation equivalent channels relevant information transmitted by line；Detection means, is detected for the equivalent channels relevant information using generation to the signal for combining transmission by the multiple relay station received.
Compared with prior art, advantage is fairly obvious for technical scheme provided by the present invention, is embodied as：
1. compared with the open loop approach by taking ADSTC as an example, the present invention can make combined relaying system obtain array gain, therefore in the bit error rate（BER) and in terms of Packet Error Ratio（PER) perform better；Also, this programme is applied to any number of relay stations and participates in combined relaying, and each relay station can configure the situation of any number of transmitting antennas.
2. compared with the closed-loop fashion exemplified by precoding in a distributed manner, the expense that control signaling is brought in the present invention is smaller；Also, Base-Band Processing process and the determination process of weight coefficient become more cylinder list, so as to advantageously reduce relay station, base station, the processing complexity of terminal.Brief description of the drawings
The following detailed description to non-limiting example is read by referring to accompanying drawing, other features, objects and advantages of the invention will become more apparent upon.Figure l b show the combined relaying network diagram based on closed-loop fashion in the prior art；Fig. 2 is shown is used for the systems approach flow chart for realizing that many relay station joint down hop equipment send signal within a wireless communication network according to the specific embodiment of the present invention；
Fig. 3 is the combined relaying network diagram of a specific embodiment according to the present invention, wherein, two relay station joint down hop equipment send signal, and described two relay stations respectively have a transmitting antenna；
Fig. 4 a-4b are the combined relaying network diagram of a specific embodiment according to the present invention, wherein, two relay station joint down hop equipment send signal, and a relay station, equipped with two transmitting antennas, another relay station is only equipped with a transmitting antenna；
Fig. 5 is the combined relaying network diagram of a specific embodiment according to the present invention, wherein, two relay station joint down hop equipment send signal, and described two relay stations
Respectively there are two transmitting antennas；
Fig. 6 a- Fig. 6 d are the combined relaying network diagram of a specific embodiment according to the present invention, wherein, three relay station joint down hop equipment send signal.
Fig. 7 shows the method flow diagram for being used to combine down hop equipment transmission signal with other relay stations in the multiple antennas relay station of wireless relay network according to the specific embodiment of the present invention；
Fig. 8 shows the method flow diagram for being used to combine down hop equipment transmission signal with other relay stations in the single antenna relay station of wireless relay network according to the specific embodiment of the present invention；
Fig. 9 shows the method flow diagram for being used to control multiple relay station joint down hop equipment to send signal in the base station of wireless relay network according to the specific embodiment of the present invention；
Figure 10 shows the first joint dispensing device block diagram for being used to combine down hop equipment transmission signal with other relay stations in the multiple antennas relay station of wireless relay network according to the specific embodiment of the present invention；
Figure 11 shows the second joint dispensing device block diagram for being used to combine down hop equipment transmission signal with other relay stations in the single antenna relay station of wireless relay network according to the specific embodiment of the present invention；
Figure 12 shows the control device block diagram for being used to control multiple relay station joint down hop equipment to send signal in the base station of wireless relay network according to the specific embodiment of the present invention；
Figure 13 shows the method flow diagram for being used to detect the signal for combining transmission by many relay stations received in the network equipment of wireless relay network according to the specific embodiment of the present invention；
Figure 14 shows the signal supervisory instrument block diagram for being used to detect the signal for combining transmission by many relay stations received in the network equipment of wireless relay network according to the specific embodiment of the present invention.
Wherein, same or analogous reference represents same or analogous device（Module）Or step.
Embodiment
Hereinafter, without loss of generality, illustrated by taking the transmission of upward signal as an example, those skilled in the art can apply the present invention among downstream signal transmission according to being described herein to uplink signal transmissions without creative work.
Fig. 2 is shown is used for the systems approach flow chart for realizing that many relay station joint down hop equipment send signal within a wireless communication network according to the specific embodiment of the present invention.Referring to Fig. 2 and present invention is described respectively in connection with Fig. 3-Fig. 5 d.
Fig. 3 is the combined relaying network diagram of a specific embodiment according to the present invention, wherein, two joint down hop equipment of relay station 1,2 are that base station 0 sends signal, and described two relay stations are only equipped with a transmitting antenna, simultaneously, it is assumed that be furnished with N in base station 0rRoot reception antenna, wherein, NrFor the positive integer more than or equal to 1.
In this example, in step S 1, base station 0 is to need the relay station 2 for being weighted processing to signal to provide weight coefficient b.Preferably, b generation is based on following criterion：Realize that the received signal quality at base station 0 is maximized.It will be appreciated by those skilled in the art that the received signal quality can be characterized by one or more in the following information：Received signal power（Such as, RSSI is received signal strength indicator information）；Received signal power and the ratio of noise power (SNR)；The ratio of received signal power and interfering signal power（SIR ) ；Received signal power and noise power, the ratio of interfering signal power sum（SINR ) .
To achieve the above object, following formula can be based on（1) the weight coefficient b is generated
Wherein, relay station 1 and relay station are represented respectively with 22Transmitting antenna and base station 0 i-th reception antenna between channel related information（Such as, channel fading coefficient）, " Re " represents to take a real, and " * " represents conjugate operation symbol.It will be appreciated by those skilled in the art that formula（1) determination b mode is provided with being merely illustrative, protection scope of the present invention is not by formula（1) limited.
In step S2, mobile terminal A is sent the signal at each relay station.It will be appreciated by those skilled in the art that having no strict time sequencing between step 1 and 2, show only to state convenient in the form of in Fig. 2.
Hereafter in step S3, each relay station demodulates transmission symbol { Xi, X according to the signal received2... (e.g., 16QAM modulation symbols）, then, signal is forwarded to base station 0 in step s 4 in the following manner:
- in first time slot, relay station 1 sends X relay stations 2 on its transmitting antenna and sends bXi on its transmitting antenna;
- in second time slot, relay station 1 sends X on its transmitting antenna2, relay station 2 then sends bX on its transmitting antenna2。
Wherein, at each relay station N (this example intermediate value is 1) the road signals to be sent in common M (this example intermediate value is 2) road signal to be sent are addressed to base station 0 after processing is weighted.
Herein, mainly illustrated by taking Space Time Coding as an example, those skilled in the art can the teaching based on present specification the present invention is extended into the situation of space-frequency coding without creative work, " first time slot " described in above need to only be replaced with " first subcarrier;;, and " second time slot " is correspondingly replaced with " second subcarrier ".
Then, the signal received at base station 0 can be shown as the form of following formula (2)：
Λ = hi,RS \ xk + b hi,RS 2 xk + ni i = X - , Nr;K=2 ,-(2) wherein,niRepresent additive noise.
So, the relevant coding of group is constituted between the transmitting antenna of relay station 1 and relay station 2.The implication of the relevant coding of group referred to herein is：Corresponding symbol is sent on same time slot/same subcarrier of different antennae（One of symbol can be weighted processing）.
By reading following explanation, advantage of the invention will be apparent from, following formula（3) the judgement signal to noise ratio in example shown in Fig. 3 is shown（ SNRDecisi.J ：
Wherein, Gdiversity gainRepresent diversity gain, correspondingly, Garray gainRepresent array gain.The judgement signal to noise ratio of ADSTC schemes in Fig. 1（ SNRDecisi。n。f ADSTC) as follows
Shown in formula (4)：
Be not difficult to find out by comparing, the present invention compared to it is existing be based purely on the combined relaying of open loop approach for, additionally obtain array gain, systematic function is more excellent.
In addition, it can be seen that, in this example, signaling consumption produced by the weight coefficient transmitted between base station 0 and each relay station is only 1 bit, less than the 4Q bits in the distributed precoding scheme shown in figure lb, wherein Q represents the feedback quantity of each precoding coefficients, saves the Radio Resource between base station and relay station.
In this way, can realize that the signal to noise ratio for receiving signal is maximized at base station 0, hereafter, can be according to maximum-ratio combing in the receiver at base station 0（MRC) signal received detected.
Herein, one group of antenna of the relevant coding of formation group each other is referred to as matching antenna.
When matching antenna on different relay stations（Such as, situation shown in Fig. 3）If, relay station 1,2 matching antenna on to base station 0 send identical pilot signal, receiver carry out channel estimation obtained by channel response be actually the channel response between reception antenna physically and transmitting antenna a linear combination（Coefficient is depended under weight coefficient b), this situation, and receiver of the prior art is that the support to the present invention can be achieved.
If these relay stations send different pilot signals to base station 0 on matching antenna, need to be improved receiver for the present invention, specifically, the receiver after improving at base station 0 is primarily based on the pilot signal P that relay station 1,2 is sent respectively2、 P3Channel is estimated, two channel response values are correspondingly made available, then, receiver is in conjunction with the weight coefficient b and described two channel response values used in relay station 2, the channel response for obtaining equivalence is calculated according to linear weighted function, for follow-up signal detection.
In upper example, base station 0 directly will inform relay station 2 for the weight coefficient b being weighted.In a change case of upper example, weight coefficient b generating process is carried out at relay station 2, specifically, in step 1, channel related information between its each reception antenna collected and each transmitting antenna of each relay station is informed relay station 2 by base station 0, then by relay station 2 such as above-mentioned formula（1) weight coefficient b is generated shown in.
In the another change case of upper example, it is assumed that the channel between each relay station and base station 0 is
Symmetric channel, now, should be by recipient（Base station 0) carry out channel estimation can also be carried out by each relay station, then, each relay station will obtain its own channel related information between base station 0 respectively, hereafter, each relay station collects channel related information to relay station 2, and relay station 2 is then according to formula（1) weight coefficient b is generated.
Hereinafter, the other application scene no longer to above-mentioned two change case is particularly described, and is that the situation for needing the relay station for carrying out precoding directly to provide weight coefficient is illustrated only for base station.It will be appreciated by those skilled in the art that will not so cause any materially affect to the solution of the present invention.
Hereinafter, the relay station worked in as the relay station 1 in Fig. 3 under open loop approach is referred to as open loop relay station, the relay station worked in as the relay station 2 in Fig. 3 under closed-loop fashion is referred to as closed loop relay station, and weighted process signal being sent on some antennas, the multiple antennas relay station that not weighted process signal is sent on remaining antenna is referred to as compound relay station.
Fig. 4 a are the combined relaying network diagram of a specific embodiment according to the present invention, wherein, the joint down hop equipment of relay station 3,4 sends signal, and relay station 3, equipped with a transmitting antenna, relay station 4 is then equipped with two transmitting antennas.It can be seen that, relay station 3 is an open loop relay station, and relay station 4 is a compound relay station.
With reference to Fig. 4 a and Fig. 2 is combined, in step 1, base station 0 is that relay station 4 is provided for by relay station 4 transmitting antenna（Referred to as TX-4 1, hereinafter, represents relay station m n-th transmitting antenna in the form of TX-m-n）On signal to be sent be weighted the weight coefficient ^ of processing.
Receive after the upward signal that mobile terminal A is sent in step 2, in step 3, relay station 3,4 is demodulated to it obtains modulation symbol { X X^ .. }, then, what is obtained after the demodulation of 4 pairs of relay station described treats（Space）The signal of coding is carried out（Between）Coding, obtain two-way signal to be sent i.e. Χ, Χ2And { Χ2* ,-Χ Γ }, and then utilize weight coefficient！^ is to the signal sequence { X that will be sent on TX-4-1l 5 Χ2Processing is weighted, obtain the signal sequence { b to be sent of weighted processing all the way!X Ι^Χ2}。
In step 4, signal to be sent is sent to base station by relay station 3,4 in the following manner
0:
- in the first slot, relay station 3 sends Xl 5Relay station 4 is sent on TX-4-1
B, X, and send on TX-4-2 X2；
- in the second time slot, relay station 3 sends X2, relay station 4 sends b, X on TX-4-12And on TX-4-2 transmission-Χ Λ
It can be seen that, in Fig. 4 a illustrated embodiments, distributed Space Time Coding is constituted between the transmitting antenna of relay station 3 and the TX-4_2 of relay station 4, so as to obtain coding gain, in addition, the relevant coding of group is also constituted between the transmitting antenna of relay station 3 and TX-4-1 of relay station 4, so as to obtain array gain.
The generation of weight coefficient bi in Fig. 4 a illustrated embodiments relies on matching antenna（The channel related informations of TX-4 1 1) between each reception antenna of base station 0 on the transmitting antenna and relay station 4 of relay station 3, are such as that the received signal quality for realizing receiving terminal is maximized, then can still use and formula（1) formula (5) similarly determines b1 ;I.e.：
b l,- - ; Nr (5)
Wherein, hi RS2With
It show respectively the channel related information between the channel related information and TX-4-1 of relay station 4 and i-th reception antenna of base station 0 between the transmitting antenna of relay station 3 and i-th reception antenna of base station 0.
In such a situation, the signaling consumption that the weight coefficient between base station 0 and relay station is related to still is 1 bit.
Fig. 4 b show the combined relaying network diagram of a specific embodiment according to the present invention, wherein, relay station 5,6, which is combined to base station 0, sends signal, and relay station 5, equipped with two transmitting antennas, relay station 6 is only equipped with a transmitting antenna.
Wherein, Space Time Coding is constituted between two transmitting antenna TX-5-1 and TX-5-2 of relay station 5, and, the relevant coding of composition group between the transmitting antenna of TX-5-1 and relay station 6.Relay station 6 is used for the coefficient b weighted2Channel related information between transmitting antenna based on relay station 6 and each reception antenna of the channel related information between each reception antenna of base station 0 and TX-5-1 and base station 0 is generated, such as formula（6) shown in：
Wherein ,/5The channel related information between TX-5_1 and i-th reception antenna of base station 0 is represented ,/^ represents the channel related information between the transmitting antenna of relay station 6 and i-th reception antenna of base station 0.
It will be appreciated by those skilled in the art that the various application scenarios of the not exhaustive present invention of each embodiment of present specification, still, those skilled in the art can apply the present invention to without creative work under teaching herein in the situation that does not occur herein.
Fig. 5 is the combined relaying network diagram of a specific embodiment according to the present invention, wherein, relay station 7,8, which is combined to base station 0, sends signal, and described two relay stations respectively have two transmitting antennas.Relay station 7 is an open loop relay station, and relay station 8 is a closed loop relay station.
Now, between TX-7-1 and TX-8-1, and in TX-7-between 2 and TX-8-2, the relevant coding of group is respectively constituted.
The signal received at base station 0 is shown in formula (7) in the matrix form：
X, y2) ,RS7-2 + (i) t(2)
X2 」 （7)
b2x2 -b2x
Wherein, i=', Nr) channel related information of i-th reception antenna of base station 0 between the signal received by k-th of time slot, first transmitting antenna of expression relay station 7 and i-th reception antenna of base station 0 is represented, remaining is similarly.Based on this, formula (7) is equivalent to formula (8)
In this example, the receiver at base station 0 can use Alamouti decoders to recover modulation symbol X, X2.Still according to the principle that snr of received signal at base station 0 is maximum, weight coefficient b can be determined by formula (9)3And b4:
Hi, Rs i-j represent the channel related information between the jth root transmitting antenna of relay station 7 and i-th reception antenna of base station 0, ^8Channel related information between the jth root transmitting antenna of-expression relay station 8 and i-th reception antenna of base station 0.In other words, in this example, b3Generated based on the channel related information of antenna TX-7-1 and TX-8-1 each between each reception antenna in base station 0 is matched, and b4Then generated based on the channel related informations of antenna TX-7_2 and Τ Χ -8_2 each between each reception antenna of base station 0 are matched.
In this example, the weight coefficient transmission between base station 0 and each relay station only takes up 2 bits, is much better than simple closed loop policy of the prior art.
Skilled artisan understands that; Fig. 5 illustrate only a kind of combined relaying scheme when two relay stations are provided with two transmitting antennas; protection scope of the present invention also covers multiple change case of situation shown in Fig. 5; such as; relay station 7 is also weighted processing, etc. to the signal to be sent on one root transmitting antenna.Repeat no more.
The present disclosure applies equally to the situation that more than two relay stations joint down hop equipment sends signal, illustrated referring to Fig. 2 and respectively in connection with Fig. 6 a-6d.
In situation shown in Fig. 6 a, three relay station Ι-Ι Π only equipped with transmitting antenna, wherein, constitute distributed testing system between relay station I, II transmitting antenna, and the then relevant coding of composition group between relay station I, III transmitting antenna.With reference to described above skilled person will appreciate that, weight coefficient b5Generation dependent on the channel related information between relay station I, III for constituting matching the antenna each reception antenna respective between base station 0 of transmitting antenna, its determination scheme can be based on the thought of formula (5), i.e. will be therein！^ replaces with b5, then willRS3 replaces with KRSI, and willkI, RS 4 replaces with RSJJ.
It is used as a change case of situation shown in Fig. 6 a, in Fig. 6 b, relay station I, II working method are identical with Fig. 6 a, unlike, relay station III, the relevant coding of composition group between relay station II, the channel related information of the transmitting antenna based on relay station II, the III for constituting matching antenna respectively between each reception antenna in base station 0 is come based on formula（5) thought generates bfi。
In Fig. 6 c, the relevant coding of composition group between relay station I and relay station IV transmitting antenna, wherein, the weight coefficient b used in relay station IV7Transmitting antenna based on relay station I, IV and the channel related information between each reception antenna of base station 0 are determined.In addition, the further relevant coding of the composition group between relay station V of relay station I and I V matching result. b8Based on formula（5) thought is determined, i.e. by therein replace with b8, then will ,/^3Replace withhI, RS 1+b 7 · hI, RS-IV, and willhI, RS 4 is replaced withRS—V。
In junction network shown in Fig. 6 d, relay station VI is equipped with two transmitting antennas, and composition group is relevant between relay station I, II respectively encodes, weight coefficient b9 、 b 1()Generation refer to described above, its principle can be to realize signal quality maximization when ensureing that signal and relay station II that relay station I and first transmitting antenna of relay station VI launched be received with the signal that second transmitting antenna of relay station V I is launched at base station 0 respectively.
With reference to antenna packet, the scheme such as day line options, or circulation delay diversity, the present invention can promote the situation for containing three or more transmitting antennas for a relay station, repeat no more herein.
Hereinafter, reference picture 7 and Fig. 4 a are combined it is described to being used to combining with other relay stations the method for sending a signal to next-hop device in multiple antennas relay station according to the specific embodiment of the present invention.By taking the relay station 4 in Fig. 4 a as an example, it is furnished with two transmitting antenna TX-4J and TX-4-2.
In step S10, relay station 4 obtains weight coefficient b,.The step S10 has following two specific implementations：
Mode 1：Weight coefficient is obtained by base station 0
In such a situation, the responsible channel based on it between relay station 3,4 in base station 0（Channel between channel between transmitting antenna including its reception antenna and relay station 3, and its reception antenna and Τ Χ _ 4 one 1）Channel related information generate b!, and notify to relay station 4.
Mode 2:Relay station 4 voluntarily generates weight coefficient
In such a situation, step S10 is by following sub-step (not shown in figure）Realize：
S100:Relay station 4 is obtained each channel related information for generating ^ by base station 0； S101 :Channel related information of the relay station 4 based on acquisition generates bl Q
Alternatively, S10 can also be realized by following sub-step, and each sub-step is especially suitable when channel is symmetric channel：
S100':Relay station 4 carries out channel estimation, the channel related information between TX-4_1 and base station 0 is obtained, while being carried out channel estimation by relay station 3 and directly informing the channel related information between the relay station 3 of acquisition and base station 0 or inform relay station 4 indirectly by base station 0;
S101 ':Channel related information of the relay station 4 based on acquisition generates b,.
After the upward signal from mobile terminal A is received, relay station 4 is demodulated to it, obtains stream of modulation symbols,2, X3, X4... }, based on advance configuration, in step S1 1, the symbol stream that 4 pairs of relay station is demodulated carries out Space Time Coding, in case X, X2Exemplified by, the symbol { X space-time encoded by two-way is obtained of relay station 4h X2And { X2* ,-X, * }
It will be appreciated by those skilled in the art that when the channel between relay station 4 and base station 0 is time varying channel, this method preferably periodically performs step S10, with the bl that upgrades in time, so as to ensure that receiving terminal has higher signal quality.And when the poor even time invariant channel of the time variation of the channel, the step S10 execution cycle can be very long, or even relay station 4 is once obtaining b!Afterwards, i.e., step S10 is no longer performed before channel condition changes because of other reasons.As can be seen here, step S10 can be saved, also, not have strict time sequencing between Bu Sudden S10 and step S1 1.
Hereafter in step S 12, relay station 4, to the signal all the way sent on TX-4J is weighted, generates signal { b weighted all the way with the weight coefficient 1^ obtained in step S10!X" b,X2}。
Then, in step s 13, relay station 4 is with relay station 3-rise signal to be sent issuing base station 0.
According to the specific embodiment of the present invention, a multiple antennas relay station is not spatially encoded to pending signal, and signal is sent in the form of space diversity or spatial reuse, wherein, just sent after the weighted processing of one or more signal.
Fig. 8 shows the method flow diagram for being used to combine down hop equipment transmission signal with other relay stations in the single antenna relay station of wireless relay network according to the specific embodiment of the present invention.Hereinafter, reference picture 8 and the second aspect of the present invention is illustrated with reference to Fig. 6 a, 6b.First by taking the single antenna relay station III in Fig. 6 a as an example.
In step S20, relay station III obtains weight coefficient b5, mode of its concrete mode with the above multiple antennas relay station acquisition weight coefficient, i.e. will directly can both be given birth to by base station 0
Into b5Relay station III is issued, the channel related information between channel related information and relay station Ι Π and the base station 0 between relay station I and base station 0 can be also provided for relay station III by base station 0, then b is generated by relay station III5.The b5Generating process be based preferably on receiving terminal（Base station 0) received signal quality maximize criterion, the received signal quality includes any one of the following or appointed multinomial：Received signal power；The ratio of received signal power and noise power；The ratio of received signal power and interfering signal power；Received signal power and noise power, the ratio of interfering signal power sum.
Hereafter in step S21, relay station Ι Π treat the { X of weighting processingh X2Processing is weighted, generate { bgX bsXz }, namely the signal to be sent of weighted processing all the way.Then, in step S22 with relay station I, II, relay station III is by bsXj, b5X2Sent respectively on two time slots of its transmitting antenna to base station 0.
It will be appreciated by those skilled in the art that step S20 execution frequency is adjusted preferably according to the time-varying characteristics of channel, when channel time variation is stronger（Channel related information is changed over time comparatively fast）, step S20 execution is more frequent, conversely then can perform a step S20 for quite a long time every one.
Again with the relay station III in Fig. 6 b, exemplified by, it also obtains weight coefficient in step S20 with relay station III similarly（b6 ) 。
But, relay station Ι Ι Γ need to treat process signal { X!, X2Space Time Coding is carried out, and by the {-Χ Λ Χ of generation2* } it is used to send, then, for relay station Π Γ, also includes a unshowned step before the step S21, wherein, relay station III performs the space-time coding operation.
Hereafter in step S21, relay station III treats {-χ, the χ of weighting processing2* processing } is weighted, {-b is generated6Xr, b6X }, namely the signal to be sent of weighted processing all the way.Then, in step S22, relay station III, with relay station I, II generated described in the signal to be sent of weighted processing all the way be sent to base station 0.
Fig. 9 shows the method flow diagram for being used to control multiple relay station joint down hop equipment to send signal in the base station of wireless relay network according to the specific embodiment of the present invention.Hereinafter, the method that reference picture 9 and combination Fig. 4 a are provided the third aspect of the present invention is described.
Above have mentioned, base station 0 can be alternatively it for the offer of relay station 4 b and carry
For channel related information b is voluntarily generated for it!, it is discussed below respectively：
(one）Base station 0 is that relay station 4 is provided
Under such a situation, the operation performed at base station 0 is consistent with Fig. 9, namely, first, the channel related information between base station 0 and each relay station of diagram is obtained in step s 30, according to the specific embodiment of the present invention, the channel related information between the channel related information between the transmitting antenna of the main each reception antenna for obtaining base station 0 and relay station 3, and TX-4-1 on each reception antenna and relay station 4 of base station 0.Its concrete mode such as carries out channel estimation.
Then, in step S31, base station 0 generates b its generating mode according to the channel related information obtained in step S31 and can refer to the related content being described for systems approach.
Hereafter in step S32, base station 0 is by the notice generated for relay station 4 to relay station 4.
(two）Base station 0 is that relay station 4 provides channel related information
Under such a situation, the step S31 shown in Fig. 9 can be saved, and base station is after reed obtains its channel related information between relay station 3,4, without generating bl 5The channel related information that directly reed is obtained informs relay station 4.
Such as so that downstream signal is transmitted as an example, then the next-hop device of each relay station is mobile terminal in figure
A, now, can be estimated and be reported to base station 0 by the channel between each transmitting antennas of the mobile terminal A to its reception antenna and relay station 3,4, then be based on this generation b by base station 0!, or therefrom selected by base station 0 to generate b, required channel related information is simultaneously supplied to relay station 4.
In addition, to ensure that mobile terminal A can correctly be detected that base station 0 will also inform mobile terminal A for the weight coefficient that relay station 4 is generated to the signal received.
Hereinafter, illustrated with reference to the first joint dispensing device in the multiple antennas relay station that Figure 10 is provided the fourth aspect of the present invention.
The first joint dispensing device 10 includes shown in Figure 10：First weighting device 100, the first sender unit 101, the first space encoding device 102 and the first weight coefficient obtain device 103.Wherein, first weight coefficient obtains device 103 and specifically included：First weighted information acquisition device 1030 and the first auxiliary obtain device 1031.Skilled artisan understands that, the device being used for according to multiple embodiments of the present invention in the first joint dispensing device 10 is shown in Figure 10 for convenience, for a certain specific embodiment, there may be one or more combined signal transmission process being not involved in the specific embodiment in each sub-device shown in Figure 10.
To scheme4Exemplified by relay station 4 in a, it is furnished with two transmitting antenna TX-4-1 and TX-4-2.First weight coefficient at relay station 4 obtains device 103 and obtains weight coefficient bl DIts mode obtained has following two：
Mode 1:Weight coefficient ^ is obtained by base station 0
In such a situation, the responsible channel based on it between relay station 3,4 in base station 0（Channel between channel between transmitting antenna including its reception antenna and relay station 3, and its reception antenna and TX-4-1）Channel related information generate b and notify to relay station 4.Correspondingly, the weight coefficient relevant information that the first weighted information acquisition device 1030 is obtained by base station 0 is weight coefficient ^.It can be seen that, in mode 1, the first auxiliary obtains device 1031 and can saved.
Mode 2:Relay station 4 voluntarily generates weight coefficient
In such a situation, each sub-device working method that the first weight coefficient obtains device 103 is as follows：First weighted information acquisition device 1030 obtains each channel related information for generation by base station 0 first；
First auxiliary obtains channel related information of the device 1031 based on acquisition come according to previously described formula（1) b is generated】.
Alternatively, also b operations described below can be obtained by performing following operation especially suitable when channel is symmetric channel for above-mentioned each sub-device：
First weighted information acquisition device 1030 obtains channel related information（Such as, channel estimation is passed through）, the channel related information between TX-4 1 and base station 0 is obtained, and the channel related information between channel estimation acquisition relay station 3 and base station 0 is carried out by relay station 3, the channel related information of acquisition is concentrated to the first auxiliary and obtained at device 1031；
B is generated come the channel related information based on acquisition by the first auxiliary obtains device 1031,.After the upward signal from mobile terminal A is received, relay station 4 is demodulated to it, obtains stream of modulation symbols { X!, X2, X3, X4... }, based on the encoding scheme being pre-configured with, the symbol stream that the first 102 pairs of space encoding device is demodulated carries out Space Time Coding, with { X X2Exemplified by, through the Space Time Coding symbol { X space-time encoded by two-way is obtainedl5 X2And X,
-Χ }。
It will be appreciated by those skilled in the art that when the channel between relay station 4 and base station 0 is time varying channel, the first weight coefficient obtains device 103 and periodically obtained for to be added on TX-4J
Power signal is weighted the weight coefficient of processing, so as to ensure that receiving terminal has higher signal quality.And when the poor even time invariant channel of the time variation of the channel, the execution cycle of the acquisition operation of above-mentioned weight coefficient can be very long, even relay station 4 no longer performs described operated after the weight coefficient is once obtained before channel condition changes because of other reasons.Also, the first weight coefficient obtains the work of the space encoding device 102 of device 103 and first without strict time sequencing.
Hereafter, weight coefficient that device 103 obtained is obtained with first weight coefficient reed to the signal all the way sent on TX-4_1 is weighted by the first weighting device 100, generated
Then, by the first sender unit 101 by the signal of the weighted processing of generation with relay station 3-issue base station 0.
According to the specific embodiment of the present invention, a multiple antennas relay station is not spatially encoded to pending signal, and signal is sent in the form of space diversity or spatial reuse, wherein, just sent after the weighted processing of one or more signal.
Figure 11 shows the second joint dispensing device block diagram for being used to combine down hop equipment transmission signal with other relay stations in the single antenna relay station of wireless relay network according to the specific embodiment of the present invention.
Hereinafter, reference picture 11 and the fifth aspect of the present invention is illustrated with reference to Fig. 6 a, 6b.Shown second joint dispensing device 20 includes：Second weighting device200th, secondary signal dispensing device 201, the weight coefficient of second space code device 202 and second obtain device 203.Wherein, second weight coefficient obtains device 203 and specifically included：Second weighted information acquisition device2030 and second aids in obtaining device 2031.Skilled artisan understands that, the device being used for according to multiple embodiments of the present invention in the second joint dispensing device 20 is shown in Figure 11 for convenience, for a certain specific embodiment, there may be one or more combined signal transmission process being not involved in the specific embodiment in each sub-device shown in Figure 11.
First by taking the relay station III in Fig. 6 a as an example.
The second weight coefficient at relay station III obtains device 203 and obtains weight coefficient b5, its concrete mode obtains the mode of weight coefficient with multiple antennas relay station, i.e. both can be directly by base station 0 by the b of generation5Relay station III is issued, and is obtained by the second weighted information acquisition device, it is preferable that
Based on above-mentioned formula（5) thought generates b5.Channel related information between channel related information and relay station III and base station 0 between relay station I and base station 0 can be also provided by base station 0 for relay station III, the channel related information by the second weighted information acquisition device 2030 obtain after be supplied to the second auxiliary to obtain device 2031, the latter generates b according to the channel related information5.The b5Generating process be based preferably on receiving terminal（Base station 0) received signal quality maximize, the received signal quality includes any one of the following or appointed multinomial：Received signal power；The ratio of received signal power and noise power；The ratio of received signal power and interfering signal power；Received signal power and noise power, the ratio of interfering signal power sum.
The weight coefficient b of acquisition5Be supplied to the second weighting device 200, the second weighting device 200 by treat weighting processing Χ, X2Processing is weighted, generate { b5Xh b5X2, namely signal to be sent all the way.Then, by secondary signal dispensing device 201 by signal b to be sent5Xi, b5X2Sent respectively on two time slots of relay station Π Ι transmitting antennas to base station 0.
It will be appreciated by those skilled in the art that the second weight coefficient obtains the time-varying characteristics that device 203 obtains the frequency preferably reference channel of weight coefficient, when channel time variation is stronger（Channel related information is changed over time comparatively fast）, more frequently, conversely then the weight coefficient can be performed once for quite a long time every one and obtain process.
It can be seen that, for relay station III, second space code device 202 can be saved.Again by taking the relay station Π Γ in Fig. 6 b as an example, it also obtains device 203 to obtain weight coefficient using the second weight coefficient with relay station III similarly（b6 ) 。
But, relay station III, it is necessary to using second space code device 202 thereon treat process signal X, X2Space Time Coding is carried out, and by {-Χ, the Χ of generation2* } it is used to send.
{-Χ Λ the X } of generation is provided to the second weighting device 200, is weighted processing using b6 {-χ, the X } for treating weighting processing by the latter, generates {-b6x , b6X }, namely signal to be sent all the way.Then, secondary signal dispensing device 201 is by the {-b of generation6X, b6X2* } it is sent to base station 0.
Hereinafter, the control device that reference picture 12 and combination Fig. 4 a are provided the sixth aspect of the present invention is described.Shown control device 30 includes：Acquisition device 300, generating means 301 and notice device 302.
Above have mentioned, base station 0 can be alternatively it for the offer of relay station 4 b and carry
Bj is voluntarily generated for it for channel related information, is discussed below respectively：
(one）Base station 0 is that relay station 4 is provided
Under such a situation, first, channel related information between base station 0 and each relay station of diagram is taken by the reed of acquisition device 300, according to the specific embodiment of the present invention, channel related information between channel related information between the transmitting antenna of the main each reception antenna for obtaining base station 0 and relay station 3, and TX-4-1 on each reception antenna and relay station 4 of base station 0.Its concrete mode such as carries out channel estimation.
Then, the channel related information obtained by generating means 301 according to acquisition device 300 generates b, its generating mode can refer to the related content being described for systems approach.
Hereafter, by notice device 302 by the notice generated for relay station 4 to relay station 4.
(two）Base station 0 is that relay station 4 provides channel related information
Under such a situation, generating means 301 shown in Figure 12 can be saved, after the channel related information that acquisition device 300 obtains between base station 0 and relay station 3,4, without generating t, the channel related information of acquisition is directly informed into relay station 4 by notice device 302.
Such as so that downstream signal is transmitted as an example, then the next-hop device of each relay station is mobile terminal in figure
A, now, it can be estimated and be reported to base station 0 by the channel between each transmitting antennas of the mobile terminal A to its reception antenna and relay station 3,4, then this generation b is based on by base station 0 or therefrom select generation b by base station 0, required channel related information is simultaneously supplied to relay station 4.
Another sunset is foretold, to ensure that mobile terminal A can correctly be detected that base station 0 will also inform mobile terminal A for the weight coefficient bl that relay station 4 is generated, and specifically be completed by a sub-device not shown in Figure 12 to the signal received.
Figure 13 shows the method flow diagram for being used to detect the signal for combining transmission by many relay stations received in the network equipment of wireless relay network according to the specific embodiment of the present invention.Wherein, in view of when different relay stations send identical pilot signal on antenna is matched, existing receiver can support the present invention without changing, therefore, and the situation that different frequency pilot signs are sent on matching antenna mainly for different relay stations below is illustrated.
In step S40, the channel response between each reception antenna of the estimation of base station 0 itself and all transmitting antennas of all relay stations then, will match the channel response combination phase of antenna
The weight coefficient answered carries out corresponding linear weighted function merging, obtains corresponding equivalent channels response
Then, in step S41, base station 0 is responded according to the equivalent channels of generation to be detected to dock the collection of letters number, so that original modulation symbol X is recovered, X2。
Figure 14 shows the signal supervisory instrument block diagram for being used to detect the signal for combining transmission by many relay stations received in the network equipment of wireless relay network according to the specific embodiment of the present invention.Shown signal supervisory instrument 40 includes：Generating means 400 and detection means 401 of equal value.
First, channel response between each reception antenna of the estimation of generating means 400 base station 0 of equal value and all transmitting antennas of all relay stations, then, the channel response for matching antenna is merged accordingly with reference to corresponding weight coefficient, obtains corresponding equivalent channels response.
Then, detection means 401 is responded according to the equivalent channels of generation is detected to dock the collection of letters number, so as to recover original modulation symbol X!, X2.Embodiments of the invention are described above, but the invention is not limited in specific system, equipment and specific agreement, those skilled in that art can make various deformations or amendments within the scope of the appended claims.
Claims (34)
- Claims1. a kind of be used to combine the method that down hop equipment sends signal with other relay stations in the multiple antennas relay station of wireless relay network, wherein, comprise the following steps：B. weighted signal, which is weighted processing, to be treated to one or more in the multiple signals using weight coefficient, to generate the signal to be sent of one or more weighted processing；C. the signal to be sent of the signal to be sent of one or more weighted processing and the not weighted processing in remaining each road is sent to the next-hop device.2. according to the method described in claim 1, it is characterised in that also include step before the step b：A. treat process signal to be spatially encoded, to generate the signal that multichannel is spatially encoded；The step b also includes：- using in the weight coefficient signal spatially encoded to the multichannel one or more it is spatially encoded treat that weighted signal is weighted processing, to generate the signal to be sent of one or more weighted processing.3. method according to claim 1 or 2, it is characterised in that also include before the step b：I. the weight coefficient is obtained.4. method according to claim 3, it is characterised in that the step i also includes：Il obtain weight coefficient relevant information as the base station belonging to this relay station.5. method according to claim 4, it is characterised in that the weight coefficient relevant information includes any one of the following or appointed multinomial：- be used to treat the weight coefficient that weighted signal is weighted to one or more in the multiple signals；The channel related information between multiple relay stations and the next-hop device in-each relay station；Wherein, when the weight coefficient relevant information is the channel related information between multiple relay stations and the next-hop device in each relay station, also wrapped after the step il Include：I2. based on the channel related information between the multiple relay stations and the next-hop device in each relay station, generate for treating the weight coefficient that weighted signal is weighted to one or more in the multiple signals.6. the method according to any one of claim 3 to 5, it is characterized in that, the weight coefficient is used to realize that the received signal quality at the next-hop device to be maximized, wherein, the received signal quality includes any one of the following or appointed multinomial：- received signal power；The ratio of-received signal power and noise power；The ratio of-received signal power and interfering signal power；- received signal power disturbs the ratio of signal power sum with noise power, thousand.7. method according to any one of claim 1 to 6, it is characterised in that the space encoding includes any one of the following：- Space Time Coding；- space-frequency coding.8. a kind of be used to combine the method that down hop equipment sends signal with other relay stations in the single antenna relay station of wireless relay network, wherein, comprise the following steps：P. weighted signal is treated using weight coefficient to be weighted, to generate the signal to be sent of weighted processing all the way, wherein, the weight coefficient is used to realize that the received signal quality at the next-hop device to be maximized；Q. the signal to be sent of the weighted processing is sent to the next-hop device.9. method according to claim 8, it is characterised in that also include before the step P：0., which treats process signal, is spatially encoded, and spatially encoded all the way weighted signal is treated to generate；The step P also includes：- using weight coefficient to it is described it is spatially encoded treat that weighted signal is weighted, to generate the signal to be sent of the weighted processing.10. method according to claim 8 or claim 9, it is characterised in that the step P Also include before：- obtain for treating the weight coefficient that weighted signal is weighted processing to described.1 1. methods according to claim 10, it is characterised in that the acquisition is used to treat that the step of weighted signal is weighted the weight coefficient of processing includes to described：- weight coefficient relevant information is obtained as the base station belonging to this relay station.12. the method according to claim 11, it is characterised in that the weight coefficient relevant information includes any one of the following or appointed multinomial：- be used to treat the weight coefficient that weighted signal is weighted to described；The channel related information between multiple relay stations and the next-hop device in-each relay station；Wherein, when the weight coefficient relevant information is the channel related information between multiple relay stations and the next-hop device in each relay station, also include after the step of base station as belonging to this relay station obtains weight coefficient relevant information：- based on the channel related information between the multiple relay stations and the next-hop device in each relay station, generate the weight coefficient for being weighted processing to the signal to be sent；The received signal quality includes any one of the following or appointed multinomial：- received signal power；The ratio of-received signal power and noise power；The ratio of-received signal power and interfering signal power；- received signal power and noise power, the ratio of interfering signal power sum.13. the method according to any one of claim 8 to 12, it is characterised in that the space encoding includes any one of the following：- Space Time Coding；- space-frequency coding.14. a kind of method for being used to control multiple relay station joint down hop equipment to send signal in the base station of wireless relay network, wherein, comprise the following steps：A. weight coefficient relevant information is provided for one or more of the multiple relay station relay station, the weight coefficient relevant information is used for by one or more of relay stations to be added Power signal is weighted processing.15. method according to claim 14, it is characterised in that the weight coefficient relevant information includes any one of the following or appointed multinomial：- the weight coefficient；The channel related information between multiple relay stations and the next-hop device in-each relay station.16. a kind of be used to combine the first joint dispensing device that down hop equipment sends signal with other relay stations in the multiple antennas relay station of wireless relay network, wherein, including：First weighting device, for treating that weighted signal is weighted processing to one or more in multiple signals using weight coefficient, to generate the signal to be sent of one or more weighted processing；First sender unit, for the signal to be sent of the signal to be sent of one or more weighted processing and the not weighted processing in remaining each road to be sent to the next-hop device.17. the first joint dispensing device according to claim 16, it is characterised in that also include：First space encoding device, is spatially encoded for treating process signal, to generate the signal that multichannel is spatially encoded；First weighting device is additionally operable to, and treats that weighted signal is weighted processing using one or more in the weight coefficient signal spatially encoded to the multichannel, to generate the signal to be sent of one or more weighted processing.18. the first joint dispensing device according to claim 17, it is characterised in that also include：First weight coefficient obtains device, for obtaining weight coefficient, wherein, the weight coefficient is used to treat that weighted signal is weighted processing to described one or more.19. the first joint dispensing device according to claim 18, it is characterised in that first weight coefficient, which obtains device, also to be included：First weighted information acquisition device, for obtaining weight coefficient relevant information as the base station belonging to this relay station20. the first joint dispensing device according to claim 19, it is characterised in that the weight coefficient relevant information includes any one of the following or appointed multinomial：- be used to treat the weight coefficient that weighted signal is weighted to described one or more；The channel related information between multiple relay stations and the next-hop device in-each relay station；Wherein, when the weight coefficient relevant information is the channel related information between multiple relay stations and the next-hop device in each relay station, first weight coefficient, which obtains device, also to be included：First auxiliary obtains device, for based on the channel related information between the multiple relay stations and the next-hop device in each relay station, generating for treating the weight coefficient that weighted signal is weighted to described one or more.21. the first joint dispensing device according to any one of claim 16 to 20, it is characterized in that, the weight coefficient is used to realize that the received signal quality at the next-hop device to be maximized, wherein, the received signal quality includes any one of the following or appointed multinomial：- received signal power；The ratio of-received signal power and noise power；The ratio of-received signal power and interfering signal power；- received signal power and noise power, the ratio of interfering signal power sum.22. the first joint dispensing device according to any one of claim 16 to 21, it is characterised in that the space encoding includes any one of the following：- Space Time Coding；- space encoding.23. a kind of be used to combine the second joint dispensing device that down hop equipment sends signal with other relay stations in the single antenna relay station of wireless relay network, wherein, including：Second weighting device, is weighted for treating weighted signal using weight coefficient, to generate the signal to be sent of weighted processing all the way, wherein, the weight coefficient is used to realize that the received signal quality at the next-hop device to be maximized；Secondary signal dispensing device, for the signal to be sent of the weighted processing to be sent To the next-hop device.24. the second joint dispensing device according to claim 23, it is characterised in that also include：Second space code device, is spatially encoded for treating process signal, and spatially encoded all the way weighted signal is treated to generate；Second weighting device is additionally operable to：- using weight coefficient to it is described it is spatially encoded treat that weighted signal is weighted, to generate the signal to be sent of the processing weighted all the way.25. the second joint dispensing device according to claim 23 or 24, it is characterised in that also include：Second weight coefficient obtains device, is used to treat the weight coefficient that weighted signal is weighted processing all the way to described for obtaining.26. the second joint dispensing device according to claim 25, it is characterised in that second weight coefficient, which obtains device, also to be included：Second weighted information acquisition device, for obtaining weight coefficient relevant information as the base station belonging to this relay station.27. method according to claim 26, it is characterised in that the weight coefficient relevant information includes any one of the following or appointed multinomial：- be used to treat the weight coefficient that weighted signal is weighted all the way to described；The channel related information between multiple relay stations and the next-hop device in-each relay station；Wherein, when the weight coefficient relevant information is the channel related information between multiple relay stations and the next-hop device in each relay station, second weight coefficient, which obtains device, also to be included：Second auxiliary obtains device, for based on the channel related information between the multiple relay stations and the next-hop device in each relay station, generating for treating the weight coefficient that weighted signal is weighted processing all the way to described；The received signal quality includes any one of the following or appointed multinomial：- received signal power； The ratio of-received signal power and noise power；The ratio of-received signal power and interfering signal power；- received signal power and noise power, the ratio of interfering signal power sum.28. the second joint dispensing device according to any one of claim 23 to 27, it is characterised in that the space encoding includes any one of the following：- Space Time Coding；- space encoding.29. a kind of control device for being used to control multiple relay station joint down hop equipment to send signal in the base station of wireless relay network, it is characterized in that, including the device for providing weight coefficient relevant information for one or more of the multiple relay station relay station, the weight coefficient relevant information is weighted processing for treating weighted signal by one or more of relay stations.30. control device according to claim 29, it is characterised in that the weight coefficient relevant information includes any one of the following or appointed multinomial：- weight coefficient；The channel related information between multiple relay stations and the next-hop device in-each relay station.31.-kind of the method for sending signal for many relay stations joint down hop equipment in wireless relay network, it is characterised in that comprise the following steps：II. one or more of the multiple relay station relay station treats that weighted signal is weighted processing to the N roads in the signal of M roads, with the signal to be sent for the not weighted processing of signal to be sent and M-N roads for generating the weighted processing in N roads, wherein, M is the positive integer more than 1, and N is the positive integer more than zero less than M；III. the multiple relay station sends the signal to be sent of the not weighted processing of the signal to be sent of the weighted processing in N roads and the M-N roads to the next-hop device.32. method according to claim 31, it is characterised in that also include before the step II：One or more of the multiple relay stations of I relay station is treated process signal and is spatially encoded, to generate M roads signal； The step II also includes：One or more of-the multiple relay station relay station treats that weighted signal is weighted processing to the Μ roads signal Zhong Ν roads of generation, to generate the signal to be sent of the weighted processing in Ν roads and described] signal to be sent of the not weighted processing in Vi-N roads.33. a kind of be used to combine the method that the signal sent is detected by many relay stations to receiving in the network equipment of wireless relay network, it is characterised in that comprises the following steps：- antenna with each group of the multiple relay station matched based on present networks equipment between channel related information, it is the signal generation equivalent channels relevant information transmitted by each group matching antenna and corresponding relay station is used to treat the weight coefficient that weighted signal is weighted；- signal for combining transmission by the multiple relay station received is detected using the equivalent channels relevant information of generation.34.-be used to kind in the network equipment of wireless relay network combine the signal supervisory instrument that the signal sent is detected by many relay stations to receiving, it is characterised in that including：Generating means of equal value, channel related information between for matching antenna with each group of the multiple relay station based on present networks equipment, it is the signal generation equivalent channels relevant information transmitted by each group matching antenna and corresponding relay station is used to treat the weight coefficient that weighted signal is weighted；Detection means, is detected for the equivalent channels relevant information using generation to the signal for combining transmission by the multiple relay station received.
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| WO2012010048A1 (en) * | 2010-07-23 | 2012-01-26 | 中兴通讯股份有限公司 | Transmission method and system for cooperative relay based on limited feedback precoding |
| CN102420679A (en) * | 2011-09-30 | 2012-04-18 | 北京邮电大学 | Relay collaborative precoding-based multi-user two-way communication method |
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| CN110972137B (en) * | 2018-09-29 | 2021-09-14 | 上海华为技术有限公司 | Communication method and device |
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| WO2012010048A1 (en) * | 2010-07-23 | 2012-01-26 | 中兴通讯股份有限公司 | Transmission method and system for cooperative relay based on limited feedback precoding |
| CN102420679A (en) * | 2011-09-30 | 2012-04-18 | 北京邮电大学 | Relay collaborative precoding-based multi-user two-way communication method |
| CN102420679B (en) * | 2011-09-30 | 2014-11-19 | 北京邮电大学 | Relay collaborative precoding-based multi-user two-way communication method |
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