CN101651532B - Hybrid automatic retransmission request processing method and device under spatial multiplexing mode - Google Patents
Hybrid automatic retransmission request processing method and device under spatial multiplexing mode Download PDFInfo
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Abstract
The invention discloses a hybrid automatic retransmission request (HARQ) processing method under a spatial multiplexing mode. The method comprises the following steps: ending HARQ retransmission when feedback marks are two confirmation ACKs; and carrying out HARQ process according to retransmission times and rank adaptation when the feedback marks comprise negative confirmation NACKs. The invention also discloses HARQ processing device and base station under a spatial multiplexing mode. The invention can be used for processing the HARQ under the spatial multiplexing mode.
Description
Technical field
The present invention relates to communication technical field, relate in particular to space multiplexing mode mixed automatic retransfer request treatment technology.
Background technology
If the transmitting terminal of wireless communication system and receiving terminal have many antennas, in some cases, can improve exponentially by the mode of spatial reuse the data rate of system.Use HARQ (Hybrid Automatic Repeat Request, mixed automatic retransfer request) and introduce the re-transmission time diversity, can further improve the reliability of spatial reuse transmission.
LTE (Long Term Evolution, the multiplex data fluxion of supporting at same running time-frequency resource when Long Term Evolution) the layer representation space in the system space multiplexing transmission process is multiplexing, and the number of plies equals the order that the base station is finally determined, the maximum number of plies of supporting at present equals 4; Code word represents independently data flow, and the code word number equals 1 or 2, and mapping can be mapped to one deck or two-layer to each code word through layer.
For the adapted space multiplexer mode, the LTE agreement has specified the user to need feedack under this pattern, comprise: CQI (Channel Quality Information, channel quality information), PMI (Precoding Matrix Indicator, pre-coding matrix is indicated) and RI (Rank Indication, order indication).Wherein, CQI can have Whole frequency band (wideband) CQI and subband (subband) CQI, the base station is adaptively selected according to the MCS (Modulation and CodingScheme, Modulation and Coding Scheme) that the CQI of reporting of user carries out downlink data transmission; PMI only reports under the Closed-Loop Spatial Multiplexing pattern; The multiplex data fluxion that the corresponding spatial reuse of RI can be supported.The CQI of reporting of user and PMI calculate according to the RI that the last time reports, and can not be applied directly to other RI value based on the CQI of certain RI calculating.The base station can be decided the RI that whether adopts reporting of user in its sole discretion.
Data on the code word are pressed the form tissue of TB (Transport block, transmission block), and during spatial reuse, two TB on two code words share a HARQ process number, use different TB to number, and can dispatch respectively new data or redundancy versions.Simultaneously, the exchange sign of the HARQ in the downlink signaling (HARQ swap flag) is supported in the TB of two code words of the front exchange of transmission.These characteristics are so that the data dispatch during spatial reuse is more flexible, but have also increased the complexity of HARQ retransmission process simultaneously.
The inventor finds that there is following deficiency in prior art in realizing process of the present invention:
Also there is not complete space multiplexing mode HARQ to process implementation in the existing LTE technology.
Summary of the invention
The embodiment of the invention provides a kind of space multiplexing mode mixed automatic retransfer request HARQ processing method, and in order to the processing of mixed automatic retransfer request HARQ under the multiplexer mode of implementation space, the method comprises:
When feedback marks is two affirmation ACK, finishes HARQ and retransmit;
When feedback marks comprises Negative Acknowledgement NACK, according to number of retransmissions and rank adaptation, carry out HARQ and process.
The embodiment of the invention also provides a kind of space multiplexing mode HARQ processing unit, and in order to the processing of mixed automatic retransfer request HARQ under the multiplexer mode of implementation space, this device comprises:
The first processing module is used for finishing HARQ and retransmitting when feedback marks is two affirmation ACK;
The second processing module is used for when feedback marks comprises Negative Acknowledgement NACK, according to number of retransmissions and rank adaptation, carries out HARQ and processes.
The embodiment of the invention also provides a kind of base station, and in order to the processing of mixed automatic retransfer request HARQ under the multiplexer mode of implementation space, this base station comprises above-mentioned space multiplexing mode HARQ processing unit.
In the embodiment of the invention, by being two when confirming ACK in feedback marks, finish HARQ and retransmit; When feedback marks comprises Negative Acknowledgement NACK, according to number of retransmissions and rank adaptation, carry out HARQ and process, thereby realized the processing of mixed automatic retransfer request HARQ under the space multiplexing mode.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment.Apparently, the accompanying drawing in the following describes only is some embodiments of the present invention, and for those of ordinary skills, the accompanying drawing that can also obtain other according to these accompanying drawings is to realize the embodiment of the invention.In the accompanying drawings:
Fig. 1 is space multiplexer mode HARQ processing method schematic flow diagram in the embodiment of the invention;
Fig. 2 is the structural representation of space multiplexer mode HARQ processing unit in the embodiment of the invention;
Fig. 3, Fig. 4 are the structural representation of the second processing module in the embodiment of the invention;
Fig. 5 is the structural representation of base station in the embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, below in conjunction with accompanying drawing the embodiment of the invention is described in further details.At this, illustrative examples of the present invention and explanation thereof are used for explanation the present invention, but not as a limitation of the invention.
HARQ processing method when the spatial reuse in the embodiment of the invention transmits has been considered the processing procedure of different situations according to the difference of feedback marks.For example, feedback marks can be divided into following several different situations:
1, feedback marks is two ACK (Acknowledgement confirms);
2, feedback marks is a NACK (Negative Acknowledgement, Negative Acknowledgement) and an ACK, i.e. the TB transmission success of a code word, the TB bust this of another code word;
3, feedback marks is two NACK, i.e. all failures of the TB of two code words transmission.
Above-mentioned rear two kinds of situations may be summarized to be the situation that feedback marks comprises NACK.In the embodiment of the invention, space multiplexing mode mixed automatic retransfer request HARQ processing method can comprise: when feedback marks is two affirmation ACK, finishes HARQ and retransmit; When feedback marks comprises Negative Acknowledgement NACK, according to number of retransmissions and rank adaptation, carry out HARQ and process.
In this embodiment of the invention, by being two when confirming ACK in feedback marks, finish HARQ and retransmit; When feedback marks comprises Negative Acknowledgement NACK, according to number of retransmissions and rank adaptation, carry out HARQ and process, thereby realized the processing of mixed automatic retransfer request HARQ under the space multiplexing mode.Wherein carry out HARQ according to number of retransmissions and rank adaptation and process, the prior art scheme that all sends new data with two code words in the WCDMA system or all send data retransmission is compared, and implements more flexibly, and practicality is stronger.
The below describes in further detail the embodiment of the invention more by reference to the accompanying drawings.As shown in Figure 1, space multiplexer mode HARQ process flow can comprise in the embodiment of the invention:
Further, the feedback marks in the step 103 comprises NACK, can comprise two kinds of different situations: one is two NACK for one of NACK for ACK, feedback marks in the feedback marks.Both of these case can further be subdivided into different processing procedures according to number of retransmissions and rank adaptation different.The following examples are considered the impact that maximum retransmission and rank adaptation bring, and have provided the HARQ treatment step under the different situations.Wherein, more but when not reaching maximum retransmission at number of retransmissions, the method for utilizing HARQ exchange sign or reducing by force RI improves as far as possible and retransmits reliability.For describing for simplicity, following description is mainly for first biography and re-transmission with a pair of TB, different to TB first biography and retransmit similarly, repeat no more here.Wherein, the time interval between just biography, NACK/ACK receive and retransmit can be specified by agreement.
If feedback marks is a NACK and an ACK, the processing of this situation can be paid the utmost attention to data retransmission.Its implementation can comprise:
If the transmission block TB that NACK is corresponding reaches maximum retransmission, finish the HARQ retransmission processes; Or
If the TB that NACK is corresponding does not reach maximum retransmission, concrete processing can be divided into again following several different situations:
If a code word is used in 1 this transmission, then use all the time this code word to send the TB that makes mistakes, until transmission success or reach maximum retransmission, and the order indication RI that reports the last time according to the user and the channel quality information CQI CQI that selects this transmission.
Above-mentioned this transmission uses the reason of a code word to comprise: the RI that the user reports the last time is greater than 1 but determined to use RI to equal 1 and carried out that this transmission, this RI that reports of user equal 1, the user does not have new data etc., and the last time wherein comprises this.
During implementation, the CQI that the RI that reports the last time according to the user and CQI select this transmission can comprise:
If the RI that the user reports the last time equals 1, the CQI that then user is reported the last time is as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
If the RI that the user reports the last time equals 2, then use CQI on the corresponding code word of ACK as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Wherein making the spatial reuse number of plies is 1 to be actually and to have reduced by force RI; Or
If the RI that the user reports the last time equals 3, then use the CQI be mapped on the two-layer code word as the CQI of this transmission, and to make the spatial reuse number of plies be 2; Or
If the RI that the user reports the last time equals 4, then use CQI on the corresponding code word of ACK as the CQI of this transmission, and to make the spatial reuse number of plies be 2.
If two code words are used in 2 these transmission, and the number of retransmissions of the TB that makes mistakes then exchanges the TB of two code words more than or equal to 2, the TB that namely uses code word re-transmission corresponding to ACK to make mistakes, the code word transmission new data that use NACK is corresponding.The enforcement of aforementioned exchange can utilize HARQ exchange sign.
If two code words are used in 3 these transmission, and the number of retransmissions of the TB that makes mistakes then do not exchange the TB of two code words less than 2, namely uses code word corresponding to ACK to send new data, uses code word corresponding to NACK to retransmit the TB that makes mistakes.
If feedback marks is two NACK, implementation can comprise:
If two TB corresponding to NACK all reach maximum retransmission, finish the HARQ retransmission processes; Or
If two TB corresponding to NACK all do not reach maximum retransmission, concrete processing can be divided into again following several different situations:
If the number of retransmissions of 1 one of them TB equals maximum retransmission, then this transmission uses a code word to retransmit the TB that does not reach maximum retransmission, and the RI that reports the last time according to the user and the CQI CQI that selects this transmission.
Above-mentioned this transmission uses the reason of a code word to comprise: the RI that the user reports the last time is greater than 1 but determined to use RI to equal 1 and carried out that this transmission, this RI that reports of user equal 1, the user does not have new data etc.
Further, during implementation, the CQI that the RI that reports the last time according to the user and CQI select this transmission can comprise:
If the RI that the user reports the last time equals 1, then the CQI that reports the last time of user is as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
If the RI that the user reports the last time greater than 1, then chooses CQI
IdxAs the CQI of this transmission, and to make the number of plies of spatial reuse be l
Idx, wherein,
Be the higher codewords indexes of corresponding spectrum efficiency, CQI
iBe i the CQI that code word is corresponding, eff
iBe CQI
iCorresponding spectrum efficiency, l
iBe i the number of plies that code word is mapped to.
If the number of retransmissions of 2 two TB is all less than maximum retransmission, and this transmission still uses two code words, and then two TB all use original code word to retransmit.
If the number of retransmissions of 3 two TB is all less than maximum retransmission, and code word of this transmission use, then use this code word to retransmit one of them TB; Or, if next time, a code word was still used in transmission, then continue to use this code word to retransmit another TB; Or, if next time, two code words were used in transmission, then continue to use on this code word to send new data, retransmit another TB in another code word.
Above-mentioned this transmission uses the reason of a code word to comprise: the RI that the user reports the last time is greater than 1 but determined to use RI to equal 1 and carried out that this transmission, this RI that reports of user equal 1, the user does not have new data etc.
Lift an example, the TB before establishing on code word 1 and the code word 2 is respectively TB1 and TB2, and then this transmission uses a code word such as code word 1 to retransmit TB1.If a code word is still used in ensuing transmission, then use code word 1 to retransmit TB2; If can use two code words, then send new data in code word 1, retransmit TB2 in code word 2.
During implementation, the CQI that the RI that reports the last time according to the user and CQI select this transmission can comprise:
If the RI that the user reports the last time equals 1, then the CQI that reports the last time of user is as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
If the RI that the user reports the last time greater than 1 o'clock, then chooses CQI
IdxAs the CQI of this transmission, and to make the number of plies of spatial reuse be l
Idx, wherein,
Be the higher codewords indexes of corresponding spectrum efficiency, CQI
iBe i the CQI that code word is corresponding, eff
iBe CQI
iCorresponding spectrum efficiency, l
iBe i the number of plies that code word is mapped to.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to finish by program, described program can be stored in the computer read/write memory medium, this program is when carrying out, can comprise all or part of step in above-described embodiment method, described storage medium can comprise: ROM, RAM, disk, CD etc.
A kind of space multiplexing mode HARQ processing unit, base station are also provided in the embodiment of the invention, as described in the following examples.Because the principle that this device, base station are dealt with problems is similar to space multiplexing mode HARQ processing method, so the enforcement of this device, base station can be referring to the enforcement of method, and the repetition part repeats no more.
As shown in Figure 2, space multiplexer mode HARQ processing unit can comprise in the embodiment of the invention:
The first processing module 201 is used for finishing HARQ and retransmitting when feedback marks is two affirmation ACK;
The second processing module 202 is used for when feedback marks comprises Negative Acknowledgement NACK, according to number of retransmissions and rank adaptation, carries out HARQ and processes.
Among one embodiment, described feedback marks comprises NACK, refers to: one is NACK in the feedback marks, and one is ACK.In this case, as shown in Figure 3, the second processing module 202 may further include:
The first processing unit 301 is used for when transmission block TB corresponding to NACK reaches maximum retransmission, finishes HARQ and retransmits; Or
The second processing unit 302 is used for when TB corresponding to NACK do not reach maximum retransmission:
If a code word is used in this transmission, then use this code word to send the TB that makes mistakes, until transmission success or reach maximum retransmission, and the order indication RI that reports the last time according to the user and the channel quality information CQI CQI that selects this transmission; Or
If two code words are used in this transmission, and the number of retransmissions of the TB that makes mistakes then uses code word corresponding to ACK to retransmit the TB that makes mistakes more than or equal to 2, uses code word corresponding to NACK to send new data; Or
If two code words are used in this transmission, and the number of retransmissions of the TB that makes mistakes then uses code word transmission new data corresponding to ACK, the TB that uses code word re-transmission corresponding to NACK to make mistakes less than 2.
Among one embodiment, the second processing unit 302 further can also be used for:
The RI that reports the last time the user equals at 1 o'clock, and the CQI that the user is reported the last time is as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
The RI that reports the last time the user equals at 2 o'clock, uses CQI on the corresponding code word of ACK as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
The RI that reports the last time the user equals at 3 o'clock, uses the CQI be mapped on the two-layer code word as the CQI of this transmission, and to make the spatial reuse number of plies be 2; Or
The RI that reports the last time the user equals at 4 o'clock, uses CQI on the corresponding code word of ACK as the CQI of this transmission, and to make the spatial reuse number of plies be 2.
Among another embodiment, described feedback marks comprises NACK, refers to: feedback marks is two NACK.In this case, as shown in Figure 4, above-mentioned the second processing module 202 can comprise:
The 3rd processing unit 401 is used for when two TB corresponding to NACK all reach maximum retransmission, finishes HARQ and retransmits; Or
The manages unit 402 everywhere, is used for when two TB corresponding to NACK all do not reach maximum retransmission:
If the number of retransmissions of one of them TB equals maximum retransmission, then this transmission uses a code word to retransmit the TB that does not reach maximum retransmission, and the RI that reports the last time according to the user and the CQI CQI that selects this transmission; Or
If the number of retransmissions of two TB is all less than maximum retransmission, and two code words of this transmission use, then two TB all use original code word to retransmit; Or
If the number of retransmissions of two TB is all less than maximum retransmission, and code word of this transmission use, then use this code word to retransmit one of them TB; Or, if next time, a code word was still used in transmission, then continue to use this code word to retransmit another TB; Or, if next time, two code words were used in transmission, then continue to use on this code word to send new data, retransmit another TB in another code word.
Among the embodiment, further, the manages unit 402 everywhere can also be used for:
The RI that reports the last time the user equals at 1 o'clock, and the CQI that the user reports the last time is as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
The RI that reports the last time the user chose CQI greater than 1 o'clock
IdxAs the CQI of this transmission, and to make the number of plies of spatial reuse be l
Idx, wherein,
Be the higher codewords indexes of corresponding spectrum efficiency, CQI
iBe i the CQI that code word is corresponding, eff
iBe CQI
iCorresponding spectrum efficiency, l
iBe i the number of plies that code word is mapped to.
As shown in Figure 5, the base station in the embodiment of the invention can comprise above-mentioned space multiplexing mode HARQ processing unit, also can comprise each module among Fig. 2, Fig. 3 or Fig. 4 during certain implementation.This base station is processed and can with reference to the associated description of preceding method embodiment and HARQ processing unit embodiment, be not repeated herein space multiplexing mode HARQ.
In the embodiment of the invention, by being two when confirming ACK in feedback marks, finish HARQ and retransmit; When feedback marks comprises Negative Acknowledgement NACK, according to number of retransmissions and rank adaptation, carry out HARQ and process, thereby realized the processing of mixed automatic retransfer request HARQ under the space multiplexing mode.Wherein carry out HARQ according to number of retransmissions and rank adaptation and process, all send new data with two code words in the WCDMA system or all send the prior art scheme of data retransmission, implement more flexibly, practicality is stronger.
The spatial reuse HARQ processing scheme that the embodiment of the invention provides has been considered the impact that number of retransmissions and rank adaptation bring, and has provided the HARQ treatment step under the different situations.More but when not reaching maximum retransmission when number of retransmissions, the method that the embodiment of the invention can be utilized HARQ exchange sign or reduce by force RI improves as far as possible and retransmits reliability.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; the protection range that is not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. space multiplexing mode mixed automatic retransfer request HARQ processing method is characterized in that the method comprises:
When feedback marks is two affirmation ACK, finishes HARQ and retransmit;
When feedback marks comprises Negative Acknowledgement NACK, according to number of retransmissions and rank adaptation, carry out HARQ and process;
Wherein, described feedback marks comprises NACK, refers to: one is NACK in the feedback marks, and one is ACK,
Described according to number of retransmissions and rank adaptation, carry out HARQ and process, comprising:
If the transmission block TB that NACK is corresponding reaches maximum retransmission, finish HARQ and retransmit; Or
If the TB that NACK is corresponding does not reach maximum retransmission:
If a code word is used in this transmission, then use this code word to send the TB that makes mistakes, until transmission success or reach maximum retransmission, and the order indication RI that reports the last time according to the user and the channel quality information CQI CQI that selects this transmission; Or
If two code words are used in this transmission, and the number of retransmissions of the TB that makes mistakes then uses code word corresponding to ACK to retransmit the TB that makes mistakes more than or equal to 2, uses code word corresponding to NACK to send new data; Or
If two code words are used in this transmission, and the number of retransmissions of the TB that makes mistakes then uses code word transmission new data corresponding to ACK, the TB that uses code word re-transmission corresponding to NACK to make mistakes less than 2.
2. the method for claim 1 is characterized in that, the CQI that the described RI that reports the last time according to the user and CQI select this transmission comprises:
If the RI that the user reports the last time equals 1, the CQI that then user is reported the last time is as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
If the RI that the user reports the last time equals 2, then use CQI on the corresponding code word of ACK as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
If the RI that the user reports the last time equals 3, then use the CQI be mapped on the two-layer code word as the CQI of this transmission, and to make the spatial reuse number of plies be 2; Or
If the RI that the user reports the last time equals 4, then use CQI on the corresponding code word of ACK as the CQI of this transmission, and to make the spatial reuse number of plies be 2.
3. the method for claim 1 is characterized in that, a code word is used in described this transmission, comprising:
The RI that reports the last time the user is greater than 1 but determined to use RI to equal 1 and carried out this transmission, or this RI that reports of user equals 1, or the user is not when having new data, and a code word is used in this transmission.
4. space multiplexing mode mixed automatic retransfer request HARQ processing method is characterized in that the method comprises:
When feedback marks is two affirmation ACK, finishes HARQ and retransmit;
When feedback marks comprises Negative Acknowledgement NACK, according to number of retransmissions and rank adaptation, carry out HARQ and process;
Wherein, described feedback marks comprises NACK, refers to: feedback marks is two NACK,
Described according to number of retransmissions and rank adaptation, carry out HARQ and process, comprising:
If two TB corresponding to NACK all reach maximum retransmission, finish HARQ and retransmit; Or
If two TB corresponding to NACK all do not reach maximum retransmission, then:
If the number of retransmissions of one of them TB equals maximum retransmission, then this transmission uses a code word to retransmit the TB that does not reach maximum retransmission, and the RI that reports the last time according to the user and the CQI CQI that selects this transmission; Or
If the number of retransmissions of two TB is all less than maximum retransmission, and two code words of this transmission use, then two TB all use original code word to retransmit; Or
If the number of retransmissions of two TB is all less than maximum retransmission, and code word of this transmission use, then use this code word to retransmit one of them TB; Or, if next time, a code word was still used in transmission, then continue to use this code word to retransmit another TB; Or, if next time, two code words were used in transmission, then continue to use on this code word to send new data, retransmit another TB in another code word.
5. method as claimed in claim 4 is characterized in that, the CQI that the described RI that reports the last time according to the user and CQI select this transmission comprises:
If the RI that the user reports the last time equals 1, then the CQI that reports the last time of user is as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
If the RI that the user reports the last time greater than 1, then chooses CQI
IdxAs the CQI of this transmission, and to make the number of plies of spatial reuse be l
Idx, wherein,
Be the higher codewords indexes of corresponding spectrum efficiency, CQI
iBe i the CQI that code word is corresponding, eff
iBe CQI
iCorresponding spectrum efficiency, l
iBe i the number of plies that code word is mapped to.
6. method as claimed in claim 4 is characterized in that, a code word is used in described this transmission, comprising:
The RI that reports the last time the user is greater than 1 but determined to use RI to equal 1 and carried out this transmission, or this RI that reports of user equals 1, or the user is not when having new data, and a code word is used in this transmission.
7. space multiplexing mode HARQ processing unit is characterized in that this device comprises:
The first processing module is used for finishing HARQ and retransmitting when feedback marks is two affirmation ACK;
The second processing module is used for when feedback marks comprises Negative Acknowledgement NACK, according to number of retransmissions and rank adaptation, carries out HARQ and processes;
Wherein, described feedback marks comprises NACK, refers to: one is NACK in the feedback marks, and one is ACK,
Described the second processing module comprises:
The first processing unit is used for when transmission block TB corresponding to NACK reaches maximum retransmission, finishes HARQ and retransmits; Or
The second processing unit is used for when TB corresponding to NACK do not reach maximum retransmission:
If a code word is used in this transmission, then use this code word to send the TB that makes mistakes, until transmission success or reach maximum retransmission, and the order indication RI that reports the last time according to the user and the channel quality information CQI CQI that selects this transmission; Or
If two code words are used in this transmission, and the number of retransmissions of the TB that makes mistakes then uses code word corresponding to ACK to retransmit the TB that makes mistakes more than or equal to 2, uses code word corresponding to NACK to send new data; Or
If two code words are used in this transmission, and the number of retransmissions of the TB that makes mistakes then uses code word transmission new data corresponding to ACK, the TB that uses code word re-transmission corresponding to NACK to make mistakes less than 2.
8. device as claimed in claim 7 is characterized in that, described the second processing unit is further used for:
The RI that reports the last time the user equals at 1 o'clock, and the CQI that the user is reported the last time is as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
The RI that reports the last time the user equals at 2 o'clock, uses CQI on the corresponding code word of ACK as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
The RI that reports the last time the user equals at 3 o'clock, uses the CQI be mapped on the two-layer code word as the CQI of this transmission, and to make the spatial reuse number of plies be 2; Or
The RI that reports the last time the user equals at 4 o'clock, uses CQI on the corresponding code word of ACK as the CQI of this transmission, and to make the spatial reuse number of plies be 2.
9. space multiplexing mode HARQ processing unit is characterized in that this device comprises:
The first processing module is used for finishing HARQ and retransmitting when feedback marks is two affirmation ACK;
The second processing module is used for when feedback marks comprises Negative Acknowledgement NACK, according to number of retransmissions and rank adaptation, carries out HARQ and processes;
Wherein, described feedback marks comprises NACK, refers to: feedback marks is two NACK,
Described the second processing module comprises:
The 3rd processing unit is used for when two TB corresponding to NACK all reach maximum retransmission, finishes HARQ and retransmits; Or
The manages the unit everywhere, is used for when two TB corresponding to NACK all do not reach maximum retransmission:
If the number of retransmissions of one of them TB equals maximum retransmission, then this transmission uses a code word to retransmit the TB that does not reach maximum retransmission, and the RI that reports the last time according to the user and the CQI CQI that selects this transmission; Or
If the number of retransmissions of two TB is all less than maximum retransmission, and two code words of this transmission use, then two TB all use original code word to retransmit; Or
If the number of retransmissions of two TB is all less than maximum retransmission, and code word of this transmission use, then use this code word to retransmit one of them TB; Or, if next time, a code word was still used in transmission, then continue to use this code word to retransmit another TB; Or, if next time, two code words were used in transmission, then continue to use on this code word to send new data, retransmit another TB in another code word.
10. device as claimed in claim 9 is characterized in that, described manages the unit everywhere is further used for:
The RI that reports the last time the user equals at 1 o'clock, and the CQI that the user reports the last time is as the CQI of this transmission, and to make the spatial reuse number of plies be 1; Or
The RI that reports the last time the user chose CQI greater than 1 o'clock
IdxAs the CQI of this transmission, and to make the number of plies of spatial reuse be l
Idx, wherein,
Be the higher codewords indexes of corresponding spectrum efficiency, CQI
iBe i the CQI that code word is corresponding, eff
iBe CQI
iCorresponding spectrum efficiency, l
iBe i the number of plies that code word is mapped to.
11. a base station is characterized in that, comprises each described device of claim 7 to 10.
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| CN 200910171244 CN101651532B (en) | 2009-08-27 | 2009-08-27 | Hybrid automatic retransmission request processing method and device under spatial multiplexing mode |
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| WO2012040890A1 (en) * | 2010-09-27 | 2012-04-05 | 富士通株式会社 | Method for determining precoding matrix, apparatus thereof and wireless communication system |
| CN105743609A (en) * | 2014-12-12 | 2016-07-06 | 中兴通讯股份有限公司 | Method and device for determining channel quality indication CQI efficiency |
| CN106899390B (en) * | 2015-12-21 | 2020-04-28 | 华为技术有限公司 | HARQ transmission-based method, device and system |
| WO2018027589A1 (en) * | 2016-08-09 | 2018-02-15 | 华为技术有限公司 | Data transmission method, data transmission apparatus, and communications system |
| US11601223B2 (en) * | 2017-08-18 | 2023-03-07 | Qualcomm Incorporated | Systems and methods for HARQ transmission and retransmission using multiple code words |
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| CN1385983A (en) * | 2001-05-10 | 2002-12-18 | 华为技术有限公司 | Self-adaptive regulating iterative frequency H-ARO receiving method |
| CN101197644A (en) * | 2006-12-07 | 2008-06-11 | 大唐移动通信设备有限公司 | Multi-process data retransmission method and system |
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| CN1385983A (en) * | 2001-05-10 | 2002-12-18 | 华为技术有限公司 | Self-adaptive regulating iterative frequency H-ARO receiving method |
| CN101197644A (en) * | 2006-12-07 | 2008-06-11 | 大唐移动通信设备有限公司 | Multi-process data retransmission method and system |
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