CN102315919B - The method and apparatus that a kind of HARQ data merges - Google Patents
The method and apparatus that a kind of HARQ data merges Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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Abstract
The embodiment of the invention discloses the method and apparatus that a kind of HARQ data merges, in order to solve the CHASE in existing HARQ technology be incorporated in receive retransmit the problem that can sharply decline of data performance after merging when data performance worsens suddenly. The method includes: according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, determine the weights of each slot, wherein the first HARQ data be can not the HARQ data of correct decoding, the second HARQ data is to carry out, for the first HARQ data, the HARQ data that retransmits; The slot being in same position in first HARQ data and the second HARQ data is merged according to the weights determined. Therefore, it is possible to adjust the HARQ data the received weights when merging flexibly, thus improving the performance of the HARQ data after merging.
Description
Technical field
The present invention relates to wireless communication technology field, particularly to the method and apparatus that a kind of HARQ data merges.
Background technology
Over the wireless channel during transmission digital signal, paying no attention to due to channel transfer characteristic and think of the impact by additive noise, the digital signal that receiving terminal receives inevitably makes a mistake. In order to improve digital signal quality and the decoding accuracy of receiving terminal, it is possible to adopt HARQ (HybridAutomaticRepeatrequest, mixed automatic repeat request) technology. HARQ technology combines ARQ (AutomaticRepeatrequest, automatic repeat request) technology and FEC (ForwardErrorCorrection, forward error correction) advantage of technology, reduce the decoding complexity of FEC mode to a certain extent, it is to avoid the shortcoming that the information of ARQ mode transmits continuity difference. Specifically, containing the check bit of error correction and error detection in each packet sent, if the faulty bit number received in bag is within error correcting capability, then mistake is corrected voluntarily; When mistake is serious, time beyond the error correcting capability of FEC, then allow repeating transmission of making a start.
In current HARQ technology, a kind of conventional folding merges (ChaseCombining, CHASE) for pursuit.
In pursuit merges, transmitting terminal is after the judgement making re-transmission, the all or part of of the Frame of previous transmission will be resend, receiving terminal is for cannot the Frame of correct decoding, it is not as ARQ simply to abandon like that, but first preserve, after the Frame retransmitted receives, the Frame geometric ratio of that erroneous interpretations just preserved combines, then decode again, the signal to noise ratio of the signal after so merging may be higher than the signal to noise ratio of the signal received for the first time, then the probability of correct decoding is just big. Even if the Frame every time received be likely to all cannot independent correct decoding, but the Frame received is more many, the probability of the result correct decoding after merging is more big.
In actual applications, pursuit is merged, it is assumed that the bit error rate of the data of a front receiving terminal is λ1, the current bit error rate receiving data is λ2But, it is likely to be due to channel sudden change, λ2It is likely to much larger than λ1, the data bit error rate λ that direct geometric ratio obtains after merging is likely to also much larger than λ1.So, not only this receiving terminal cannot correct decoding, and this data are as the basis of follow-up merging, it is possible to also leading to follow-up data cannot correct decoding.
In sum, the data performance that the CHASE in existing HARQ technology is incorporated in after merging when the re-transmission data performance received worsens suddenly can sharply decline.
Summary of the invention
The embodiment of the present invention provides the method and apparatus that a kind of HARQ data merges, in order to solve the CHASE in existing HARQ technology be incorporated in receive retransmit the problem that can sharply decline of data performance after merging when data performance worsens suddenly.
The method that a kind of mixed automatic repeat request HARQ data that the embodiment of the present invention provides merges, including:
According to the performance parameter value of each slot s lot in the first HARQ data and the second HARQ data, determine the weights of each slot, wherein the first HARQ data be can not the HARQ data of correct decoding, the second HARQ data is to carry out, for the first HARQ data, the HARQ data that retransmits;
The slot being in same position in first HARQ data and the second HARQ data is merged according to the weights determined.
The equipment that a kind of mixed automatic repeat request HARQ data that the embodiment of the present invention provides merges, including:
Determine module, for according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, determine the weights of each slot, wherein the first HARQ data be can not the HARQ data of correct decoding, the second HARQ data is to carry out, for the first HARQ data, the HARQ data that retransmits;
Merge module, the slot being in same position in the first HARQ data and the second HARQ data is merged according to the weights determined.
Owing to the embodiment of the present invention provides the method that HARQ data merges to include: according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, determine the weights of each slot, wherein the first HARQ data be can not the HARQ data of correct decoding, the second HARQ data is to carry out, for the first HARQ data, the HARQ data that retransmits; The slot being in same position in first HARQ data and the second HARQ data is merged according to the weights determined. Therefore, it is possible to adjust the HARQ data the received weights when merging flexibly, thus improving the performance of the HARQ data after merging. Reduce the number of times retransmitting data further, thus improving decoding efficiency.
Accompanying drawing explanation
Fig. 1 is the method schematic diagram that in the embodiment of the present invention, HARQ data merges;
Fig. 2 is to the schematic diagram being grouped of the slot in the first HARQ data and the second HARQ data in the embodiment of the present invention;
Fig. 3 is the method schematic diagram that in the embodiment of the present invention, in OFDMA system, HARQ data merges;
Fig. 4 is the equipment schematic diagram that in the embodiment of the present invention, HARQ data merges.
Detailed description of the invention
Inventor note that in invention process and inherently sees, it is exactly to ensure that the merging impact that old data are produced by re-transmission data is postiive gain or negative gain that CHASE merges main problem. This is owing to the restriction of CHASE mechanism itself causes. CHASE mechanism requires that transmitting terminal retransmits same packet every time, and adopts same modulation coding mode, and such data arrive after receiving terminal its bit error rate and depend on channel condition, poor-performing with regard to completely passive. And for the another kind of folding steadily increase redundancy (IncrementalRedundancy of HARQ technology, IR), that casts aside its complexity realizes process, its purpose to reach is exactly the accounting reducing interchannel noise data in whole useful transmission information, thus reducing interchannel noise data to be combined the impact of rear data.If using for reference this thinking of IR in CHASE, i.e. consider to reduce interchannel noise data accounting in whole useful transmission information in CHASE merges, just can realize merging the new merging method of CHASE and IR thought in physical layer.
The merging method of a kind of HARQ data that the embodiment of the present invention provides, by according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, determine the weights of each slot, wherein the first HARQ data be can not the HARQ data of correct decoding, the second HARQ data is to carry out, for the first HARQ data, the HARQ data that retransmits; The slot being in same position in first HARQ data and the second HARQ data is merged according to the weights determined. Therefore, it is possible to adjust the HARQ data the received weights when merging flexibly, thus improving the performance of the HARQ data after merging; Reduce the number of times retransmitting data further, improve decoding efficiency.
Below in conjunction with Figure of description, the specific embodiment of the present invention is described in further detail.
As it is shown in figure 1, the method that a kind of HARQ data that the embodiment of the present invention provides merges includes:
Step 101, according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, determine the weights of each slot, wherein the first HARQ data be can not the HARQ data of correct decoding, the second HARQ data is to carry out, for the first HARQ data, the HARQ data that retransmits.
Step 102, the slot being in same position in the first HARQ data and the second HARQ data is merged according to the weights determined.
In step 101, performance parameter value can be the parameter value that CINR (CarriertoInterferenceandNoiseRatio, carrier wave and interference-to-noise ratio) value, correct bit-rates values, available power value etc. can characterize the performance of slot.
It is emphasized that performance parameter value is not limited to above parameter value, other parameter values that can characterize slot performance are equally applicable the embodiment of the present invention.
First HARQ data can be the HARQ data sent first time, it is also possible to be the HARQ data after merging.
Wherein, the HARQ data that first time sends refer in the data that first time sends because of can not correct decoding and be saved wait and the re-transmission HARQ data that merges of data next time.
HARQ data after merging refer to after merging can't correct decoding and be saved to get off to continue waiting for retransmit, with next time, the HARQ data that data merge, such as: can not the HARQ data of correct decoding after HARQ data that first time sends and the HARQ data merging of re-transmission; Or HARQ data (through merging at least one times) after inherently merging and can not the HARQ data of correct decoding after the HARQ data merging that retransmits.
Concrete, slot in first HARQ data and the second HARQ data is divided into many groups, wherein often the position in HARQ data of the slot in group is identical, by the performance parameter value of slot divided by the summation of the performance parameter value of all slot in this slot place group, the value obtained is as the weights of this slot.
For different performance parameters, the mode of the weights determining slot is described in detail.
Mode one, performance parameter value are the CINR values of slot.
Slot in first HARQ data and the second HARQ data is divided into many groups, wherein often the position in HARQ data of the slot in group is identical, specifically participate in Fig. 2, respectively slot with this slot same position in slot and the second HARQ data in the first HARQ data is formed one group, as: slot1 and slot1 ' forms one group, slot2 and slot2 ' forms one group, etc.;
By the CINR value of slot divided by the summation of the CINR value of all slot in this slot place group, the value obtained is as the weights of this slot.
Such as, if the first HARQ data and the second HARQ data all comprise M slot, the CINR value of m (m is the natural number less than or equal to M, lower same) the position slot of the first HARQ data is Ci(i is natural number, lower same), in the second HARQ data, the CINR value of m position slot is Cj(j is natural number, lower same), then:
The summation of the CINR value of the slot of m position is (Ci+Cj),
In first HARQ data, the weights of m position slot are Wi=Ci/(Ci+Cj),
In second HARQ data, the weights of m position slot are Wj=Cj/(Ci+Cj)。
Mode two, performance parameter value are the correct bit-rates values of slot.
Wherein, correct bit rate can obtain according to the bit error rate of slot, and the bit error rate of such as slot is λ, then accuracy is (1-λ). Mode two specifically determines according to CINR, the process of slot weights determines that the mode of slot weights is similar with mode one, does not repeat them here.
Mode three, performance parameter value are the available power values of slot. Mode three specifically determines according to CINR, the process of slot weights determines that the mode of weights is similar with mode one, does not repeat them here.
It is emphasized that the performance parameter according to slot determines that the mode of slot weights is not limited to three of the above mode, according to the performance parameter of slot, other can determine that the mode of slot weights is equally applicable the embodiment of the present invention.
For mode one, performance parameter value is the CINR value of slot, it is thus necessary to determine that the first HARQ data and the CINR value of each slot in the second HARQ data.
Concrete, if the first HARQ data is the HARQ data sent first time, it is possible to determine the CINR value C of m position slot in the first HARQ data according to following equation onem:
Cm=Psm/Pnm... .... formula one.
Wherein, PsmBe m position slot multiple carrier waves available power and, PnmBe m position slot multiple carrier waves useless power and.
Owing to m can take different values, the CINR value of each slot in the first HARQ data therefore can be determined according to formula one.
If the first HARQ data is the HARQ data after merging, it is possible to determine the CINR value C of m position slot in the first HARQ data according to formula two:
C=(CiN+Cj)/(N+1) ... .... formula two.
Wherein, N is for merging number of times (lower same), CiIt is the CINR value of the m position slot of the first HARQ data, CjIt it is the CINR value of m position slot in the second HARQ data.
Owing to m can take different values, the CINR value of each slot in the first HARQ data therefore can be determined according to formula two.
It addition, the second HARQ data is the HARQ data retransmitted for the first HARQ data, so the second HARQ data is but without the data merged, therefore the CINR value of each slot in the second HARQ data can also be determined according to formula one.
It should be noted that, determining that in the first HARQ data and the second HARQ data, the method for the CINR value of slot is not limited to above formula, other can determine that in the first HARQ data and the second HARQ data, the method for the CINR value of slot is equally applicable the embodiment of the present invention.
Specifically determine that in the first HARQ data and the second HARQ data, the step of the CINR value of slot can perform by the either step before needing to use the CINR value of slot.
It may also be determined that the Soft Inform ation value of each slot after merging after step 102.
If the Soft Inform ation value of m position slot is V in the first HARQ datai, weights corresponding for m position slot in the first HARQ data are Wi;In second HARQ data, the Soft Inform ation value of m position slot is Vj, weights corresponding for m position slot in the second HARQ data are Wj, it is possible to the Soft Inform ation value V of m position slot after merging is calculated according to formula three:
V=(ViWiN+VjWj)/(N+1) ... .... formula three.
Owing to m can take different values, therefore can according to formula three, it is determined that the Soft Inform ation value of each slot in the HARQ data after merging.
The Soft Inform ation value of each slot in the HARQ data after merging can also be preserved after determining the Soft Inform ation value of each slot after merging, and the Soft Inform ation value of preservation is sent to decoder for decoding.
As it is shown on figure 3, be the preferred embodiment of method that merges of HARQ data provided by the invention, its concrete application system is OFDMA system, and the method comprises the steps:
Step 301, in the baseband signal received, the subcarrier needed when taking out currently processed decoding data block decoding.
Step 302, sub-carrier carry out channel estimating and carry out channel compensation.
Step 303, it is demodulated obtaining initial soft information data to the subcarrier data after channel compensation.
Step 304, determine the CINR value of each slot in the HARQ data of HARQ data that first time sends or re-transmission.
Step 305, carry out initial soft information data extraction and basic FEC process.
Step 306, judge whether be retransmit HARQ data, if it is, perform step 307, otherwise perform step 309.
Step 307, according to the CINR value of each slot in the first HARQ data and the second HARQ data, determine the weights of each slot, wherein the first HARQ data is can not the HARQ data of correct decoding, second HARQ data is to carry out, for the first HARQ data, the HARQ data that retransmits, the slot being in same position is merged according to the weights determined in the first HARQ data and the second HARQ data.
Step 308, the CINR value determining the slot after merging and Soft Inform ation value.
This HARQ data is also sent to decoder and decodes by step 309, the CINR value preserving each slot in HARQ data and Soft Inform ation value, and wherein HARQ data is the HARQ data after the HARQ data or merging sent first time.
Step 310, judge whether to have processed all of HARQ data. If it is, process ends, otherwise, perform step 301.
It should be noted that, determine HARQ data that first time sends or retransmit the CINR value of each slot in HARQ data and be not limited to the step 304 in Fig. 3, it is possible to using in the HARQ data or re-transmission HARQ data that first time sends the either step before the CINR value of slot to determine in step 307. Determine that the CINR value of the slot after merging is not limited to the step 308 in Fig. 3, it is possible to the either step before the CINR value of the slot used after merging is determined.
As shown in Figure 4, the equipment that the HARQ data that the embodiment of the present invention provides merges comprises determining that module 40l and merges module 402.
Determine module 401, for according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, determine the weights of each slot, wherein the first HARQ data be can not the HARQ data of correct decoding, the second HARQ data is to carry out, for the first HARQ data, the HARQ data that retransmits.
Merge module 402, the slot being in same position in the first HARQ data and the second HARQ data is merged according to the weights determined.
Wherein, performance parameter value can be the parameter value that CINR value, correct bit-rates values, available power value etc. can characterize the performance of slot.
It is emphasized that performance parameter value is not limited to above parameter value, other parameter values that can characterize slot performance are equally applicable the embodiment of the present invention.
First HARQ data can be the HARQ data sent first time, it is also possible to be the HARQ data after merging.
HARQ data after merging refers to the data after the HARQ data merging of the HARQ data send first time and all re-transmissions. But due to the data after merging be likely to still can not correct decoding, then preserve and continue waiting for and retransmit data and merge.
Determine module 401 specifically for: the slot in the first HARQ data and the second HARQ data is divided into many groups, wherein often the position in HARQ data of the slot in group is identical, by the performance parameter value of slot divided by the summation of the performance parameter value of all slot in this slot place group, the value obtained is as the weights of this slot.
For different performance parameters, the mode of the weights determining slot is described in detail.
Mode one, performance parameter value are the CINR values of slot:
Determining that the slot in the first HARQ data and the second HARQ data is divided into many groups by module 40l, wherein often the position in HARQ data of the slot in group is identical; By the CINR value of slot divided by the summation of the CINR value of all slot in this slot place group, the value obtained is as the weights of this slot.
Such as, if the first HARQ data and the second HARQ data all comprise M slot, the CINR value of m (m is the natural number less than or equal to M, lower same) the position slot of the first HARQ data is Ci(i is natural number, lower same), in the second HARQ data, the CINR value of m position slot is Cj(j is natural number, lower same), then:
The summation of the CINR value of the slot of m position is (Ci+Cj),
In first HARQ data, the weights of m position slot are Wi=Ci/(Ci+Cj),
In second HARQ data, the weights of m position slot are Wj=Cj/(Ci+Cj)。
Mode two, performance parameter value are the correct bit-rates values of slot.
Wherein, correct bit rate can obtain according to the bit error rate of slot, and the bit error rate of such as slot is λ, then accuracy is (1-λ). Mode two specifically determines according to CINR, the process of slot weights determines that the mode of slot weights is similar with mode one, does not repeat them here.
Mode three, performance parameter value are the available power values of slot. Mode three specifically determines according to CINR, the process of slot weights determines that the mode of weights is similar with mode one, does not repeat them here.
It is emphasized that and determine according to the performance parameter of slot, module 401 determines that the mode of slot weights is not limited to three of the above mode, according to the performance parameter of slot, other can determine that the mode of slot weights is equally applicable the embodiment of the present invention.
For mode one, performance parameter value is the CINR value of slot, it is determined that module 401 is additionally operable to: determine the CINR value of each slot in the first HARQ data and the second HARQ data.
Concrete, if the first HARQ data is the HARQ data sent first time, it is determined that module 401 can determine the CINR value C of m position slot in the first HARQ data according to formula onem。
Owing to m can take different values, it is thus determined that module 401 can determine the CINR value of each slot in the first HARQ data according to formula one.
If the first HARQ data is the HARQ data after merging, it is determined that module 401 can determine the CINR value C of m position slot in the first HARQ data according to formula two.
Owing to m can take different values, it is thus determined that module 401 can determine the CINR value of each slot in the first HARQ data according to formula two.
It addition, the second HARQ data is the HARQ data retransmitted for the first HARQ data, so the second HARQ data is but without the data merged, therefore determine that module 401 can also determine the CINR value of each slot in the second HARQ data according to formula one.
It should be noted that, determining that module 401 determines that in the first HARQ data and the second HARQ data, the method for the CINR value of slot is not limited to above formula, other can determine that in the first HARQ data and the second HARQ data, the method for the CINR value of slot is equally applicable the embodiment of the present invention.
The equipment that the HARQ data that the embodiment of the present invention provides merges can also include:
Computing module 403, is used for the Soft Inform ation value of each slot after determining merging.
In being embodied as, computing module 403 can determine the Soft Inform ation value of m position slot after merging according to formula three.
Owing to m can take different values, the Soft Inform ation value of each slot after therefore can determining merging according to formula three.
It should be noted that it is assumed herein that the value of whole slot is ViOr Vj, V in practical applicationiOr VjCorresponding should be the value of each the Soft Inform ation value byte in slot.
Wherein, merge the Soft Inform ation value of slot in the HARQ data after module 402 can also preserve merging, and the Soft Inform ation value of preservation is sent to decoder for decoding.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program. Therefore, the present invention can adopt the form of complete hardware embodiment, complete software implementation or the embodiment in conjunction with software and hardware aspect. And, the present invention can adopt the form at one or more upper computer programs implemented of computer-usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.) wherein including computer usable program code.
The present invention is that flow chart and/or block diagram with reference to method according to embodiments of the present invention, equipment (system) and computer program describe. It should be understood that can by the combination of the flow process in each flow process in computer program instructions flowchart and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame. These computer program instructions can be provided to produce a machine to the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device so that the instruction performed by the processor of computer or other programmable data processing device is produced for realizing the device of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide in the computer-readable memory that computer or other programmable data processing device work in a specific way, the instruction making to be stored in this computer-readable memory produces to include the manufacture of command device, and this command device realizes the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices provides for realizing the step of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art are once know basic creative concept, then these embodiments can be made other change and amendment. So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
From the above it can be seen that owing to the embodiment of the present invention is by according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, determine the weights of each slot, wherein the first HARQ data be can not the HARQ data of correct decoding, the second HARQ data is to carry out, for the first HARQ data, the HARQ data that retransmits; The slot being in same position in first HARQ data and the second HARQ data is merged according to the weights determined. Therefore, it is possible to adjust the HARQ data the received weights when merging flexibly, thus improving the performance of the HARQ data after merging; Reduce the number of times retransmitting data further, improve decoding efficiency.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art. So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (23)
1. the method that a mixed automatic repeat request HARQ data merges, it is characterised in that the method includes:
According to the performance parameter value of each slot s lot in the first HARQ data and the second HARQ data, determine the weights of each slot, wherein the first HARQ data be can not the HARQ data of correct decoding, the second HARQ data is to carry out, for the first HARQ data, the HARQ data that retransmits;
The slot being in same position in first HARQ data and the second HARQ data is merged according to the weights determined.
2. the method for claim 1, it is characterised in that the method for the weights of the described slot of determination includes:
Slot in first HARQ data and the second HARQ data is divided into many groups, and wherein often the position in HARQ data of the slot in group is identical;
By the performance parameter value of slot divided by the summation of the performance parameter value of all slot in this slot place group, the value obtained is as the weights of this slot.
3. the method for claim 1, it is characterised in that described performance parameter value is carrier wave and the one in interference-to-noise ratio CINR value, correct bit-rates values and available power value.
4. method as claimed in claim 2, it is characterised in that described performance parameter value is carrier wave and the one in interference-to-noise ratio CINR value, correct bit-rates values and available power value.
5. method as claimed in claim 3, it is characterized in that, described performance parameter value is CINR value, and described first HARQ data is the HARQ data sent first time, also includes the CINR value determining each slot in the first HARQ data according to following equation before the described weights determining each slot:
Cm=Psm/Pnm;
Wherein said CmIt is the CINR value of m position slot, P in the first HARQ datasmBe m position Slot multiple carrier waves available power and, PnmBe m position slot multiple carrier waves useless power and, m is natural number.
6. method as claimed in claim 4, it is characterized in that, described performance parameter value is CINR value, and described first HARQ data is the HARQ data sent first time, also includes the CINR value determining each slot in the first HARQ data according to following equation before the described weights determining each slot:
Cm=Psm/Pnm;
Wherein said CmIt is the CINR value of m position slot, P in the first HARQ datasmBe m position Slot multiple carrier waves available power and, PnmBe m position slot multiple carrier waves useless power and, m is natural number.
7. method as claimed in claim 3, it is characterized in that, described performance parameter value is CINR value, and described first HARQ data is the HARQ data after merging, and also includes the CINR value determining each slot in the first HARQ data according to following equation before the described weights determining each slot:
C=(CiN+Cj)/(N+1);
Wherein, N is for merging number of times, and C is the CINR value of the slot after m position merges, CiIt is the CINR value of the m position slot of the first HARQ data, CjBeing the CINR value of m position slot in the second HARQ data, m is natural number.
8. method as claimed in claim 4, it is characterized in that, described performance parameter value is CINR value, and described first HARQ data is the HARQ data after merging, and also includes the CINR value determining each slot in the first HARQ data according to following equation before the described weights determining each slot:
C=(CiN+Cj)/(N+1);
Wherein, N is for merging number of times, and C is the CINR value of the slot after m position merges, CiIt is the CINR value of the m position slot of the first HARQ data, CjBeing the CINR value of m position slot in the second HARQ data, m is natural number.
9. method as claimed in claim 5, it is characterised in that also include the CINR value determining each slot in the second HARQ data according to following equation before the described weights determining each slot:
Cm=Psm/Pnm;
Wherein said CmIt is the CINR value of m position slot, P in the second HARQ datasmBe m position Slot multiple carrier waves available power and, PnmBe m position slot multiple carrier waves useless power and, m is natural number.
10. method as claimed in claim 6, it is characterised in that also include the CINR value determining each slot in the second HARQ data according to following equation before the described weights determining each slot:
Cm=Psm/Pnm;
Wherein said CmIt is the CINR value of m position slot, P in the second HARQ datasmBe m position Slot multiple carrier waves available power and, PnmBe m position slot multiple carrier waves useless power and, m is natural number.
11. method as claimed in claim 7, it is characterised in that also include the CINR value determining each slot in the second HARQ data according to following equation before the described weights determining each slot:
Cm=Psm/Pnm;
Wherein said CmIt is the CINR value of m position slot, P in the second HARQ datasmBe m position Slot multiple carrier waves available power and, PnmBe m position slot multiple carrier waves useless power and, m is natural number.
12. method as claimed in claim 8, it is characterised in that also include the CINR value determining each slot in the second HARQ data according to following equation before the described weights determining each slot:
Cm=Psm/Pnm;
Wherein said CmIt is the CINR value of m position slot, P in the second HARQ datasmBe m position Slot multiple carrier waves available power and, PnmBe m position slot multiple carrier waves useless power and, m is natural number.
13. the method as described in as arbitrary in claim 1～12, it is characterised in that described slot is merged after also include:
Determine the Soft Inform ation value of each slot after merging.
14. method as claimed in claim 13, it is characterised in that determine the Soft Inform ation value of each slot after merging according to following equation:
V=(ViWiN+VjWj)/(N+1);
Wherein, N is for merging number of times, and V is the Soft Inform ation value of m position slot, V after mergingiIt is the Soft Inform ation value of m position slot, W in the first HARQ dataiIt is weights corresponding for m position slot in the first HARQ data, VjIt is the Soft Inform ation value of m position slot, W in the second HARQ datajBeing weights corresponding for m position slot in the second HARQ data, m is natural number.
15. the equipment that a mixed automatic repeat request HARQ data merges, it is characterised in that this equipment includes:
Determine module, for according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, determine the weights of each slot, wherein the first HARQ data be can not the HARQ data of correct decoding, the second HARQ data is to carry out, for the first HARQ data, the HARQ data that retransmits;
Merge module, the slot being in same position in the first HARQ data and the second HARQ data is merged according to the weights determined.
16. equipment as claimed in claim 15, it is characterised in that described determine module specifically for:
Slot in first HARQ data and the second HARQ data is divided into many groups, wherein often the position in HARQ data of the slot in group is identical, by the performance parameter value of slot divided by the summation of the performance parameter value of all slot in this slot place group, the value obtained is as the weights of this slot.
17. equipment as claimed in claim 16, it is characterised in that described performance parameter value is carrier wave and the one in interference-to-noise ratio CINR value, correct bit-rates values and available power value.
18. equipment as claimed in claim 17, it is characterized in that, described performance parameter value is CINR value, and described first HARQ data is the HARQ data sent first time, described determines that module determines the CINR value of each slot in the first HARQ data according to following equation:
Cm=Psm/Pnm;
Wherein, CmIt is the CINR value of m position slot, P in the first HARQ datasmBe m position Slot multiple carrier waves available power and, PnmBe m position slot multiple carrier waves useless power and, m is natural number.
19. equipment as claimed in claim 17, it is characterised in that described performance parameter value is CINR value, and described first HARQ data is the HARQ data after merging, described determine that module determines the CINR value of each slot in the first HARQ data according to following equation:
C=(CiN+Cj)/(N+1);
Wherein, N is for merging number of times, and C is the CINR value of the slot after m position merges, CiIt is the CINR value of the m position slot of the first HARQ data, CjBeing the CINR value of m position slot in the second HARQ data, m is natural number.
20. equipment as claimed in claim 18, it is characterised in that described determine that module determines the CINR value of each slot in the second HARQ data according to following equation:
Cm=Psm/Pnm;
Wherein, CmIt is the CINR value of m position slot, P in the second HARQ datasmBe m position Slot multiple carrier waves available power and, PnmBe m position slot multiple carrier waves useless power and, m is natural number.
21. equipment as claimed in claim 19, it is characterised in that described determine that module determines the CINR value of each slot in the second HARQ data according to following equation:
Cm=Psm/Pnm;
Wherein, CmIt is the CINR value of m position slot, P in the second HARQ datasmBe m position Slot multiple carrier waves available power and, PnmBe m position slot multiple carrier waves useless power and, m is natural number.
22. the equipment as described in as arbitrary in claim 15-21, it is characterised in that described equipment also includes:
Computing module, is used for the Soft Inform ation value of each slot after determining merging.
23. equipment as claimed in claim 22, it is characterised in that described computing module determines the Soft Inform ation value of each slot after merging according to following equation:
V=(ViWiN+VjWj)/(N+1);
Wherein, N is for merging number of times, and V is the Soft Inform ation value of m position slot, V after mergingiIt is the Soft Inform ation value of m position slot, W in the first HARQ dataiIt is weights corresponding for m position slot in the first HARQ data, VjIt is the Soft Inform ation value of m position slot, W in the second HARQ datajBeing weights corresponding for m position slot in the second HARQ data, m is natural number.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010221207.3A CN102315919B (en) | 2010-07-01 | 2010-07-01 | The method and apparatus that a kind of HARQ data merges |
| PCT/CN2010/077302 WO2012000241A1 (en) | 2010-07-01 | 2010-09-26 | Method and apparatus for combining hybrid automatic repeat request data |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010221207.3A CN102315919B (en) | 2010-07-01 | 2010-07-01 | The method and apparatus that a kind of HARQ data merges |
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| US9331814B2 (en) | 2012-06-14 | 2016-05-03 | Intel Corporation | Hybrid automatic repeat-request combination for wireless transmissions |
| CN104125048B (en) * | 2013-04-25 | 2019-02-01 | 中兴通讯股份有限公司 | Hybrid automatic repeat-request merges interpretation method and device |
| CN104901786B (en) * | 2015-05-21 | 2018-08-28 | 北京思朗科技有限责任公司 | HARQ soft combination methods based on LTE system and device |
| CN110138516B (en) * | 2019-05-15 | 2021-12-24 | 上海酷芯微电子有限公司 | Adaptive retransmission combining method, system and medium in wireless communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1976271A (en) * | 2005-11-28 | 2007-06-06 | 上海贝尔阿尔卡特股份有限公司 | Mixed automatic retransmitting method and system based on weighted merging used for multi-carrier system |
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| CN1863034B (en) * | 2006-02-17 | 2010-09-08 | 上海华为技术有限公司 | Method for transmitting retransmission data in hybrid automatic retransmission requesting and system thereof |
| CN100479358C (en) * | 2006-07-21 | 2009-04-15 | 华为技术有限公司 | High-speed descending group switch-in retransmitting method and system |
| US7945836B2 (en) * | 2007-06-20 | 2011-05-17 | Motorola Solutions, Inc. | Method and apparatus for reducing signaling overhead in a communication system using hybrid automatic repeat request |
| US8194588B2 (en) * | 2007-12-13 | 2012-06-05 | Qualcomm Incorporated | Coding block based HARQ combining scheme for OFDMA systems |
| US8161342B2 (en) * | 2007-12-13 | 2012-04-17 | Qualcomm Incorporated | Forward and reverse shifting selective HARQ combining scheme for OFDMA systems |
| CN101599817B (en) * | 2008-06-03 | 2013-01-16 | 中兴通讯股份有限公司 | Method for improving performance of synchronous non-self-adapting mixed automatic retransmission |
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| CN1976271A (en) * | 2005-11-28 | 2007-06-06 | 上海贝尔阿尔卡特股份有限公司 | Mixed automatic retransmitting method and system based on weighted merging used for multi-carrier system |
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| WO2012000241A1 (en) | 2012-01-05 |
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