CN102088344B - Method and equipment for transmitting ACK/NACK information - Google Patents
Method and equipment for transmitting ACK/NACK information Download PDFInfo
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- CN102088344B CN102088344B CN 200910242280 CN200910242280A CN102088344B CN 102088344 B CN102088344 B CN 102088344B CN 200910242280 CN200910242280 CN 200910242280 CN 200910242280 A CN200910242280 A CN 200910242280A CN 102088344 B CN102088344 B CN 102088344B
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Abstract
The present invention discloses a method for transmitting ACK/NACK (Acknowledgement Character/ Negative Acknowledgement Character) information, the method comprises the steps of: obtaining the number of PUCCHs (Physical Uplink Control Channel) which can be transmitted by UE (User Equipment); grouping the ACK/NACK information according to the number of the PUCCHs; and merging the ACK/NACK information in each group, furthermore, performing multiplex transmission on the ACK/NACK information in each group. The method in the present invention combines the number of the PUCCHs which is supported by the UE to feed back a plurality of ACK/NACK information in groups, so as to raise transmission efficiency of the system.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method and apparatus of transferring ACK/nack message.
Background technology
LTE (Long Term Evolution, Long Term Evolution) is 3G (3rd Generation, 3-G (Generation Three mobile communication system)) evolution, LTE improves and has strengthened the aerial access technology of 3G, adopt OFDM (Orthogonal Frequency Division Multiplexing, OFDM) and MIMO (Multiple Input Multiple Output, multiple-input and multiple-output) as the standard of wireless network evolution.LTE can provide the peak rate of descending 100Mbit/s and up 50Mbit/s under the 20MHz spectral bandwidth, improved the performance of Cell Edge User, has improved cell capacity, and has reduced system delay.Wherein, the technical characterictic of LTE comprises that high data rate, grouping transmit, hang down delay, wide area covering and backward compatible.
Along with increasing rapidly of number of users of mobile terminal amount, terminal use's volume of business is exponential increase, in order to satisfy the terminal use's who continues to increase business demand, the business and the needed more peak value speed of application that need provide bigger bandwidth to satisfy the terminal use.Promptly in the mobile communication system in future, for example among the B3G (Beyond three Generation, back three generations) or among the LTE-A (LTE-Advanced, senior LTE), system will provide higher peak data rate and cell throughout, also need bigger bandwidth simultaneously; Promptly, need to support the system bandwidth wideer than LTE system for long-term evolution multi-carrier system, for example, 100MHz.
Concrete, in order to support the system bandwidth wideer (is example with 100MHz), can directly distribute the frequency spectrum of 100M bandwidth, single-frequency spectral system schematic as shown in Figure 1 than LTE system; Can also will distribute to some spectrum aggregatings of existing system, and gather wideer system bandwidth, use spectrum aggregating system schematic as shown in Figure 2 with the multicarrier system of supplying with Long Term Evolution.Under spectrum aggregating signal situation shown in Figure 2, the up-downgoing carrier wave in the system can asymmetricly dispose, and promptly the user may take N 〉=1 carrier wave and carries out downlink transfer, and occupies M 〉=1 carrier wave and carry out uplink.
In the prior art, finished the basic transmission means of LTE system, (the Frequency Division Duplex of FDD as shown in Figure 3, Frequency Division Duplexing (FDD)) the transmission means schematic diagram of system, transmission means schematic diagram with TDD (Time Division Duplexing, time division duplex) system shown in Figure 4.Wherein, in Fig. 3 and Fig. 4,, downlink signaling, downlink data, up signaling, upstream data and transmission relation have each other been defined respectively for each work carrier wave.
Concrete, in the transmission course of LTE system, in descending transmission, opened HARQ (HybridAutomatic Repeat reQuest, mix automatic repeat requests) during function, data on each descending carrier will independently be carried out coding and decoding, UE (User Equipment, subscriber equipment) will carry out the HARQ feedback respectively at the packet on each carrier wave, be ACK (ACKnowledge Character, confirmation)/NACK (nonacknowledgement information) feedback information, therefore, under the situation of spectrum aggregating, UE may be simultaneously to a plurality of ACK/NACK information of base station feedback in a sub-frame of uplink.
Further UE is after having finished demodulation to the data on the descending sub frame n ', decoding, the signaling that will whether need to retransmit in the data on this descending sub frame of base station feedback on sub-frame of uplink n=n '+k (is the ACK/NACK feedback information, wherein, ACK correctly receives with ' 1 ' expression data, does not need to retransmit; NACK need retransmit with ' 0 ' expression data decoding mistake).
For FDD system, k=4; And for the TDD system, k ∈ K gathers the value of K and numbers relevant, as shown in table 1 with the uplink-downlink configuration of system and concrete subframe.
Table 1, Downlink association set index K:{k
0, k
1... k
M-1For TDD
It should be noted that, a plurality of radio frames are tactic, if last subframe is k among the radio frames a, then first subframe is k+1 among the radio frames a+1, be the situation that example has provided the pairing K of each sub-frame of uplink only in the table 1 with a radio frames, wherein the descending sub frame in the last radio frames is then represented in n-k＜0.
In addition, in the transmission course of LTE system, carrying out many code words (code word) when transmission, also need by the usage space multiplex technique, promptly multiplexing transmission belongs to the multiplex data stream of same subscriber equipment on same physical resource.Wherein, in a subframe, code word will independently be encoded and become to the data on the different data flow, corresponding, because the ACK/NACK information of feedback is based on the code word generation, promptly to obtaining independently ACK/NACK information of 1bit behind each codeword decoding.And in carrier aggregation system, need the ACK/NACK information fed back in sub-frame of uplink, not only from a plurality of descending sub frames, but also come from a plurality of descending carriers, promptly for a sub-frame of uplink, need 2MC ACK/NACK information of feedback at most, wherein M is the descending sub frame quantity of each sub-frame of uplink correspondence in the table 1, and C is polymerization carrier number (supposing that each carrier wave uplink-downlink configuration is identical).
In present LTE TDD, the ACK/NACK of many bit (being ACK/NACK multiplexing) is supported, and a UE can transmit 4 ACK/NACK bit at most in a sub-frame of uplink.And in ACK/NACK multiplexing, UE can obtain a plurality of ACK/NACK channel, and corresponding different a plurality of ACK/NACK states (the perhaps value of ACK/NACK), at this moment, UE can choose an ACK/NACK channel in a plurality of ACK/NACK channel, and can on selected ACK/NAK channel, send 2bit information with QPSK (Quadrature Phase Shift Keying, Quadrature Phase Shift Keying).Suppose that UE can obtain N ACK/NAK channel altogether, and use the QPSK modulation system, then UE can have 4N transmission state.
Same, for the situation of the carrier aggregation of LTE-A, also can continue to use the mode of the present multiplexing feedback of LTE TDDACK/NACK, and different with present LTE TDD be, needing a plurality of ACK/NACK information of feedback is not to come from different subframes, but from different carrier waves.Though the method for the multiplexing feedback of LTETDD ACK/NACK can only be supported the ACK/NACK feedback of 4bit at most, some use the mode of the multiplexing feedback 5bit ACK/NACK of single carrier transmission expansion to be suggested (being that the LTE-A system supports that at most 5 carrier waves carry out polymerization).
For the FDD system, the ACK/NACK information of a plurality of code words of transmitting on the same carrier wave need be merged, obtain a compound ACK/NACK information, use the mode of multiplexing feedback to go up a plurality of ACK/NACK of feedback then at a PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel).For the polymerization that is not more than 4 carrier waves, can use the multiplexing method of R8, and, can use the multiplexing method of expansion for the polymerization of 5 carrier waves.For the TDD system, need feed back from the ACK/NACK on a plurality of carrier waves and a plurality of descending sub frame at same sub-frame of uplink, at this moment, pairing all ACK/NACK of a plurality of subframes on the same carrier wave can be merged, after obtaining a compound ACK/NACK, carry out multiplexing transmission.
In realizing process of the present invention, the inventor finds to exist at least in the prior art following shortcoming:
Since in the LTE-A system uplink no longer restriction can only carry out single carrier transmission, therefore for the UE (being the not limited UE of power) that supports multi-carrier transmission,, can consider to transmit simultaneously a plurality of PUCCH if when feedback information volume is big.And for the TDD system, terminal may not supported the transmission of MC PUCCH simultaneously, and wherein M is the descending sub frame quantity of each sub-frame of uplink correspondence in the table 1, and C is the polymerization carrier number, therefore, need transmit PUCCH in conjunction with the ACK/NACK multiplexed situation.But, do not have a plurality of ACK/NACK feedback informations in the prior art and carry out corresponding scheme with a plurality of PUCCH, also just can't transmit a plurality of PUCCH in conjunction with a plurality of ACK/NACK feedback informations.
Summary of the invention
The invention provides a kind of method and apparatus of transferring ACK/nack message, transmitting a plurality of ACK/NACK feedback informations in conjunction with a plurality of PUCCH, and improve the efficiency of transmission of system.
In order to achieve the above object, the embodiment of the invention provides a kind of method of transferring ACK/nack message, comprising:
Obtain the quantity of the Physical Uplink Control Channel PUCCH that user equipment (UE) can transmit;
Quantity according to described PUCCH is divided into groups to ACK/NACK information;
ACK/NACK information in every group is merged, and the ACK/NACK information in every group is carried out multiplexing transmission.
The embodiment of the invention also provides a kind of equipment of transferring ACK/nack message, comprising:
Acquisition module is used to obtain the quantity of the PUCCH that UE can transmit;
Grouping module, the quantity that is used for the described PUCCH that obtains according to described acquisition module is divided into groups to ACK/NACK information;
Composite module is used for the ACK/NACK information in every group after the grouping module grouping is merged;
Transport module is used for the ACK/NACK information in every group is carried out multiplexing transmission.
Compared with prior art, the present invention has the following advantages at least:
In LTE-A TDD system, the quantity of the PUCCH that supports in conjunction with UE divides into groups to feed back a plurality of ACK/NACK information, the ACK/NACK information that can effectively reduce on the different subframes merges the influence of the system effectiveness decline that is caused, and improves the efficiency of transmission of system.
Description of drawings
In order to be illustrated more clearly in technical scheme of the present invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a single-frequency spectral system schematic in the prior art;
Fig. 2 is a prior art intermediate frequency spectrum paradigmatic system schematic diagram;
Fig. 3 is the transmission means schematic diagram of FDD system in the prior art;
Fig. 4 is the transmission means schematic diagram of TDD system in the prior art;
Fig. 5 is the method flow schematic diagram of a kind of transferring ACK/nack message of providing of the embodiment of the invention one;
Fig. 6 is the method flow schematic diagram of a kind of transferring ACK/nack message of providing of the embodiment of the invention two;
Fig. 7 is a Packet Multiplexing transmission schematic diagram under a kind of concrete application scenarios of the embodiment of the invention;
Fig. 8 is a Packet Multiplexing transmission schematic diagram under the another kind of concrete application scenarios of the embodiment of the invention;
Fig. 9 is the method flow schematic diagram of a kind of transferring ACK/nack message of providing of the embodiment of the invention three;
Figure 10 is the device structure schematic diagram of a kind of transferring ACK/nack message of providing of the embodiment of the invention four.
Embodiment
Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
No longer limit at uplink in the LTE-A system in the prior art and can only carry out single carrier transmission,, when feedback information volume is big, can consider to transmit simultaneously a plurality of PUCCH for the not limited UE of power.
In the embodiment of the invention,, provided a kind of ACK/NACK grouping feedback method,, can effectively improve its efficiency of transmission for the not limited UE of power by being used in combination the method for the multiplexing and many PUCCH transmission of ACK/NACK.
The embodiment of the invention one provides a kind of method of transferring ACK/nack message, and as shown in Figure 5, this method may further comprise the steps:
Step 501 is obtained the quantity of the PUCCH that UE can transmit.
Step 502 is divided into groups to ACK/NACK information according to the quantity of described PUCCH.
Step 503 merges the ACK/NACK information in every group, and the ACK/NACK information in every group is carried out multiplexing transmission.
In the embodiment of the invention, ACK/NACK information is divided into groups to comprise: the descending sub frame of needs feeding back ACK/nack message in same sub-frame of uplink is divided into the P group according to the quantity of described PUCCH according to the quantity of described PUCCH; Wherein, the value of described P is the quantity of described PUCCH; Be divided in the different groupings according to the ACK/NACK information of grouping situation the descending sub frame correspondence.
Concrete, according to the grouping situation ACK/NACK information of descending sub frame correspondence is divided in the different groupings and comprises:
First kind of situation is divided in the different groupings according to the time sequencing of the descending sub frame ACK/NACK information with the descending sub frame correspondence so that continuous subframes divides on the same group, discontinuous subframe divide not on the same group in; And/or;
Second kind of situation, is divided in the different groupings according to the ACK/NACK information that puts in order the descending sub frame correspondence of descending sub frame to configuration 5 in uplink-downlink configuration 1.
Need to prove, in above-mentioned first kind of situation, according to the time sequencing of descending sub frame the ACK/NACK information of descending sub frame correspondence is divided in the different groupings and comprises: continuous descending sub frame is divided into one group, discontinuous descending sub frame divide not on the same group in.
In the embodiment of the invention, the ACK/NACK information of descending sub frame correspondence is divided in the different groupings also comprises: select the sub-frame number of descending sub frame in the P-1 group to be
And select the sub-frame number of the descending sub frame in other a group to be
Wherein, the value of M is the total amount of descending sub frame;
Round up after the expression M/2P.
ACK/NACK information in every group merged comprise: the ACK/NACK information of the descending sub frame correspondence on the same carrier wave in every group is merged, and obtain a compound ACK/NACK information.
ACK/NACK information in every group is carried out multiplexing transmission to be comprised: if the quantity of the ACK/NACK information that merges in the group is not more than at 4 o'clock, according to the multiplex mode of R8 the ACK/NACK information in every group is carried out multiplexing transmission; If the quantity of the ACK/NACK information that merges in the group greater than 4 o'clock, uses the multiplex mode of expansion to transmit the ACK/NACK information in every group is carried out multiplexing transmission.
In other uplink-downlink configuration outside uplink-downlink configuration 5, when the quantity of the quantity of multicarrier and described PUCCH is identical, quantity according to described PUCCH divides into groups also to comprise to ACK/NACK information: determine the quantity of grouping according to the quantity of multicarrier, and the ACK/NACK information of the descending sub frame correspondence in each carrier wave is divided into one group.
ACK/NACK information in every group is carried out multiplexing transmission to be comprised: the multiplex mode according to R8 carries out multiplexing transmission to the ACK/NACK information in every group.
As seen, the method that the application of the invention provides, in LTE-A TDD system, the quantity of the PUCCH that supports in conjunction with UE divides into groups to feed back a plurality of ACK/NACK information, the ACK/NACK information that can effectively reduce on the different subframes merges the influence of the system effectiveness decline that is caused, and improves the efficiency of transmission of system.
The embodiment of the invention two provides a kind of method of transferring ACK/nack message, and the method for this transferring ACK/nack message is applied to the TDD carrier aggregation system, and uplink-downlink configuration is configuration 1～configuration 5.
In table 1, the uplink-downlink configuration situation in the TDD system is configuration 0～configuration 6.And dispose 0 and configuration 6 possibility that do not have a transmitted in packets, promptly in the embodiment of the invention at configuration 1～dispose 5, as shown in table 2, be the uplink-downlink configuration situation of the corresponding embodiment of the invention.
Table 2
In embodiments of the present invention, because at the TDD carrier aggregation system, if the network side polymerization N＞1 descending carrier send data to UE, and UE need feed back the ACK/NACK information of M descending sub frame correspondence in a sub-frame of uplink, wherein, the value of M is the descending sub frame quantity of each sub-frame of uplink correspondence in the table 2.Because UE is after having finished demodulation to the data on the descending sub frame n ', decoding, to (be the ACK/NACK feedback information in the signaling of feeding back the data on this descending sub frame and whether needing to retransmit to network side on sub-frame of uplink n=n '+k, for example, ACK correctly receives with ' 1 ' expression data, does not need to retransmit; NACK need retransmit with ' 0 ' expression data decoding mistake); As can be seen, the quantity of k is corresponding in the value of M and the table 2.For example, in configuration 1, for sub-frame of uplink 2, the value of M is 2, and in configuration 2, for sub-frame of uplink 2, the value of M is 4, promptly promptly can know the value of M by table 2, gives unnecessary details no longer in detail at this.
In addition; network equipment in the embodiment of the invention includes but not limited to RNC (Radio NetworkController; radio network controller), NB (Node B; Node B), eNB, base station etc.; need to prove; this network equipment is not limited to the said equipment, and all are positioned at the equipment of network side all within protection range of the present invention.For convenience of description, this network equipment all is that example describes with the base station in the embodiment of the invention.
As shown in Figure 6, the method for above-mentioned transferring ACK/nack message may further comprise the steps:
Step 601 is according to the definite PUCCH quantity that can transmit simultaneously of the concrete condition of UE.Wherein, the concrete condition of this UE comprises situations such as channel condition, UE emissivities.This deterministic process can adopt execution mode of the prior art, repeats no more in the embodiment of the invention.
Step 602 is divided into the P group with the pairing descending sub frame of each sub-frame of uplink.Wherein, the quantity of the PUCCH that the value of this P promptly can be transmitted simultaneously, and since the i.e. value of M in the table 2 of the quantity of the pairing descending sub frame of each sub-frame of uplink promptly need to divide into groups according to the configuring condition shown in the table 2.
Concrete, need in this step M descending sub frame is divided into the P group, as can be seen, M 〉=P 〉=1.In actual applications, can select the sub-frame number of descending sub frame in every group according to actual needs arbitrarily, for example, have the individual descending sub frame of 6 (M) when one, and need be divided into 2 (P) when group, and can one group including 1 descending sub frame, another group includes 5 descending sub frames; Can also one group include 2 descending sub frames, another group includes 4 descending sub frames; Also can one group include 3 descending sub frames, another group includes 3 descending sub frames.
More preferably, in selecting every group during the sub-frame number of descending sub frame, can make institute divide sub-frame number approximately equal in each group, for example, the quantity that has P-1 to organize interior descending sub frame is
Descending sub frame quantity in having one group is
Promptly only need to guarantee that the sub-frame number of the descending sub frame in the P group is that M gets final product.Wherein,
Round up behind the expression M/2P, for above-mentioned 6 descending sub frames, in the time of need being divided into 2 groups, 1 (P-1) group is
Individual descending sub frame, another group is
Individual descending sub frame.
Step 603 is divided descending sub frame according to the grouping situation, promptly according to the grouping situation descending sub frame is divided in the different groups.
Concrete, according to the actual needs descending sub frame is divided, for example, can divide according to the time sequencing of descending sub frame, continuous subframes is divided into one group; Also can divide according to putting in order in the table 2.Below carry out follow-up explanation to be divided into example according to putting in order in the table 2.
Situation below in conjunction with sub-frame of uplink in the table 22 and configuration 2 is elaborated to this step.Suppose to have known in the above-mentioned steps that the PUCCH quantity that can transmit simultaneously is 2, then the value of P is 2, and under the situation of sub-frame of uplink 2 and configuration 2, the value of M is 4, promptly descending sub frame need be divided into 2 groups altogether, can select to have in every group 2 descending sub frames.
When descending sub frame being divided in the different groups, can being that the descending sub frame of 8 correspondences and descending sub frame that the k value is 4 correspondences are divided in one group with the k value, and need being that the descending sub frame of 7 correspondences and descending sub frame that the k value is 6 correspondences are divided in another group the k value.Describe to be divided into example in the embodiment of the invention according to putting in order in the table 2, promptly needing the k value is that the descending sub frame of 8 correspondences and descending sub frame that the k value is 7 correspondences are divided in one group, and need be that the descending sub frame of 4 correspondences and descending sub frame that the k value is 6 correspondences are divided in another group with the k value.
Step 604 merges a plurality of ACK/NACK information on the same carrier wave in every group according to dividing the result, obtains a compound ACK/NACK information.Promptly can obtain P feedback information (ACK/NACK information) set, and N compound ACK/NACK information is arranged in each set.
For example, for above-mentioned be that the descending sub frame of 8 correspondences and descending sub frame that the k value is 7 correspondences are divided in one group with the k value, and be that the descending sub frame of 4 correspondences and descending sub frame that the k value is 6 correspondences are divided into the situation in another group with the k value, need be with on the same carrier wave, the k value is that the ACK/NACK information of descending sub frame of 8 correspondences and the ACK/NACK information of the descending sub frame that the k value is 7 correspondences merge, and with on the same carrier wave, the k value is that the ACK/NACK information of descending sub frame of 4 correspondences and the ACK/NACK information of the descending sub frame that the k value is 6 correspondences merge.
Step 605 is carried out multiplexing transmission to N compound ACK/NACK information in every group, and each group produces a PUCCH.
If N≤4 o'clock, then the multiplex mode according to R8 transmits; And if N＞4 o'clock then use the multiplex mode of expansion to transmit, wherein, the multiplex mode of expansion need guarantee to have only a PUCCH in the actual transmissions process.
Concrete, under the situation of above-mentioned sub-frame of uplink 2 and configuration 2, because N=2, to be the ACK/NACK information of descending sub frame of 8 correspondences and the ACK/NACK information of the descending sub frame that the k value is 7 correspondences according to the multiplex mode of R8 transmission k value, and transmit the ACK/NACK information of descending sub frame that the k value is 4 correspondences and the ACK/NACK information of the descending sub frame that the k value is 6 correspondences according to 8 multiplex mode.
In summary it can be seen,, promptly a plurality of compound ACK/NACK information and a plurality of PUCCH can be carried out correspondence by the processing procedure of above-mentioned steps 601-step 605.Need to prove, since the base station can dominance the quantity of PUCCH of its transmission of notice UE, also can be by PUCCH quantity to its transmission of notice UE of other configuration information recessiveness such as power control of PUCCH, UE is notified by high-level signaling in the carrier wave base station that is the UE polymerization, and the binding of information such as the quantity of the pairing descending sub frame of each sub-frame of uplink and uplink-downlink configuration and sub-frame of uplink number, therefore, do not need extra signaling in the above-mentioned whole group process.
Wherein, each step in the embodiment of the invention can also be adjusted according to actual needs.
As seen, the method that the application of the invention provides, in LTE-A TDD system, the quantity of the PUCCH that supports in conjunction with UE divides into groups to feed back a plurality of ACK/NACK information, the ACK/NACK information that can effectively reduce on the different subframes merges the influence of the system effectiveness decline that is caused, and improves the efficiency of transmission of system.
Based on above-mentioned thought, the method for transferring ACK/nack message proposed by the invention is further set forth below in conjunction with a kind of concrete application scenarios.Under this application scenarios, be that example describes with Packet Multiplexing transmission schematic diagram shown in Figure 7.5 descending carriers of having supposed the UE polymerization need to feed back the ACK/NACK information (for example, the situation of sub-frame of uplink 2 and configuration 2) of 4 descending sub frames in certain sub-frame of uplink, 4 descending sub frames are respectively subframe 1, subframe 2, subframe 3 and subframe 4.
If UE can transmit 2 PUCCH simultaneously, then can on time domain, be divided into two groups in proper order by descending subframe, comprise 2 subframes in every group, as shown in Figure 7.All ACK/NACK information on the same carrier wave in each group are merged, comprise different code words and different subframes etc.Then the ACK/NACK information of each group is carried out multiplexing transmission, and a corresponding PUCCH, living 2 PUCCH of common property of producing of each group.If free of data bag transmission on a plurality of subframes of finding certain data-bag lost or merging, then Dui Ying composite information is DTX.
Based on application scenarios shown in Figure 7, if UE can transmit 3 PUCCH simultaneously, then can on time domain, be divided into three groups in proper order by descending subframe, wherein comprise 2 subframes in one group, comprise 1 subframe in every group in addition, as shown in Figure 8.Continuation is an example with situation shown in Figure 7, i.e. UE polymerization 5 descending carriers, need to feed back the ACK/NACK information of 4 descending sub frames in certain sub-frame of uplink,
All ACK/NACK information on the same carrier wave in each group are merged, comprise different code words and different subframes etc.Then the ACK/NACK information of each group is carried out multiplexing transmission, and a corresponding PUCCH, living three PUCCH of common property of producing of each group.
Need to prove that in actual applications, UE can support a plurality of PUCCH, below support 2 PUCCH, UE to support 3 PUCCH, UE to support 4 PUCCH and UE to support the grouping situation of 5 PUCCH to describe to UE respectively.As show shown in the 3-table 6, for at different uplink-downlink configuration and the PUCCH quantity that can transmit, the grouping situation of a kind of subframe that provides, certainly, in actual applications, this grouping situation can also be adjusted according to the actual needs, as long as guarantee that the quantity of grouping is constant, every group of interior subframe can be adjusted according to circumstances.Wherein, a plurality of descending sub frames of the content in { } for merging.
Grouping situation when table 3, UE can transmit two PUCCH
Grouping situation when table 4, UE can transmit three PUCCH
Grouping situation when table 5, UE can transmit four PUCCH
Grouping situation when table 6, UE can transmit five PUCCH
In table 3,, only need to guarantee that group result gets final product for being divided into 2 groups owing to be the grouping situation of transmission during two PUCCH; Same, in table 4, only need to guarantee that group result gets final product for being divided into 3 groups; In table 5, only need to guarantee that group result gets final product for being divided into 4 groups; In table 6, only need to guarantee that group result gets final product for being divided into 5 groups; Concrete subframe is not subjected to the restriction of situation in the above-mentioned table 3-table 6 in each grouping, gives unnecessary details no longer in detail at this.
Need to prove, above-mentioned table 3-table 6 is to carry out division result to be divided into example according to putting in order in the table 2, in actual applications, can also divide according to the time sequencing of descending sub frame, at this moment, the situation of correspondence table 4-table 6 is carried out division result and to divide the result according to putting in order in the table 2 similar according to the time sequencing of descending sub frame, in this explanation no longer in detail; The situation of correspondence table 3 is carried out division result a kind of situation as shown in table 7 according to the time sequencing of descending sub frame.
Grouping situation when table 7, UE can transmit two PUCCH (time sequencing according to descending sub frame is divided)
As can be seen, corresponding uplink-downlink configuration 2 and uplink-downlink configuration 5, variation has taken place in corresponding division result, according to continuous subframes being divided on the same group, discontinuous subframe is divided on the same group principle not, has guaranteed the continuous subframes branch on the same group as far as possible, and discontinuous subframe is divided not on the same group.
Need to prove, in the process of dividing according to the time sequencing of descending sub frame, need be in not selecting every group do not make during the sub-frame number of descending sub frame institute divide sub-frame number approximately equal in respectively organizing, as long as guarantee that as far as possible the continuous subframes branch is on the same group, discontinuous subframe branch is not getting final product on the same group, and the sub-frame number in every group is not done regulation.
The embodiment of the invention three provides a kind of method of transferring ACK/nack message, and the method for this transferring ACK/nack message is applied to the TDD carrier aggregation system, wherein, can select to carry out time domain or frequency domain packet in the present embodiment.As shown in Figure 9, this method may further comprise the steps:
Step 901 is according to the definite PUCCH quantity P that can transmit simultaneously of the concrete condition of UE.Wherein, the concrete condition of this UE comprises situations such as channel condition, UE emissivities.
Step 902 is selected different packet modes according to different uplink-downlink configuration situations.When uplink-downlink configuration needs in for group compound ACK/NACK information hour, forward step 904 to; When in uplink-downlink configuration is group, needing compound ACK/NACK information big, forward step 903 to.
For example, for above-mentioned uplink-downlink configuration 1～configuration 4, from table 3-table 6 as can be seen, it is individual to need compound ACK/NACK information mostly to be 2 (less) most, forwards step 904 to; And, need compound ACK/NACK information can be 4 even more (bigger) to forward step 903 to for uplink-downlink configuration 5.
Step 903 is divided into groups based on time domain.Wherein, the process that should divide into groups based on time domain is identical with the processing procedure in the above-mentioned steps 602-step 605, repeats no more in the embodiment of the invention.
Step 904 judges whether the quantity D of carrier wave identical with PUCCH quantity P, when the two is identical, forwards step 905 to, when the two not simultaneously, forward step 903 to.Wherein, the value of this D is the quantity of carrier wave.
Step 905 divides a plurality of descending sub frames in each carrier wave into and is divided into one group, and is divided into D group (being the P group), promptly divides into groups based on frequency domain.
Concrete, for uplink-downlink configuration 1～configuration 4, divide into groups owing to be based on frequency domain, then D 〉=P 〉=1; And for uplink-downlink configuration 5, owing to be based on time domain and divide into groups, M 〉=P 〉=1 then.
Step 906 is carried out multiplexing transmission to compound ACK/NACK information in every group, and every group corresponding produces a PUCCH.Because a plurality of subframes in each carrier wave are one group, at this moment, can carry out the multiplexing transmission of ACK/NACK information fully according to the multiplex mode of R8.
Need to prove, the benefit of dividing into groups based on frequency domain be when N hour, for example, N=2 can directly continue to use the multiplex mode of R8, and does not need to carry out the merging between any subframe.
Wherein, each step in the embodiment of the invention can also be adjusted according to the actual needs.
As seen, the method that the application of the invention provides, in LTE-A TDD system, the quantity of the PUCCH that supports in conjunction with UE divides into groups to feed back a plurality of ACK/NACK information, the ACK/NACK information that can effectively reduce on the different subframes merges the influence of the system effectiveness decline that is caused, and improves the efficiency of transmission of system.
The embodiment of the invention four provides a kind of equipment of transferring ACK/nack message, and as shown in figure 10, this equipment comprises:
In the embodiment of the invention, described grouping module 102 comprises:
Concrete, described grouping submodule 1022 specifically is used for, be divided in the different groupings according to the time sequencing of descending sub frame ACK/NACK information the descending sub frame correspondence so that continuous subframes divides on the same group, discontinuous subframe divide not on the same group in; And/or,
, to configuration 5, be divided in the different groupings in uplink-downlink configuration 1 according to the ACK/NACK information that puts in order the descending sub frame correspondence of descending sub frame.
In the process that according to the time sequencing of descending sub frame the ACK/NACK information of descending sub frame correspondence is divided in the different groupings, described grouping submodule 1022 also is used for, and continuous descending sub frame is divided into one group, discontinuous descending sub frame divide not on the same group in.
Further, described grouping submodule 1022 also is used for, and selects the sub-frame number of descending sub frame in the P-1 group to be
And select the sub-frame number of the descending sub frame in other a group to be
Wherein, the value of M is the total amount of descending sub frame;
Round up after the expression M/2P.
Described composite module 103 specifically is used for, and the ACK/NACK information of the descending sub frame correspondence on the same carrier wave in every group is merged, and obtain a compound ACK/NACK information.
Described transport module 104 specifically is used for, if the quantity of the ACK/NACK information that merges in the group is not more than at 4 o'clock, according to the multiplex mode of R8 the ACK/NACK information in every group is carried out multiplexing transmission;
If the quantity of the ACK/NACK information that merges in the group greater than 4 o'clock, uses the multiplex mode of expansion to transmit the ACK/NACK information in every group is carried out multiplexing transmission.
In the embodiment of the invention, in other uplink-downlink configuration outside uplink-downlink configuration 5, when the quantity of the quantity of multicarrier and described PUCCH is identical, described grouping module 102 also is used for, determine the quantity of grouping according to the quantity of multicarrier, and the ACK/NACK information of the descending sub frame correspondence in each carrier wave is divided into one group.
Described transport module 104 also is used for, and according to the multiplex mode of R8 the ACK/NACK information in every group is carried out multiplexing transmission.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
As seen, the equipment that the application of the invention provides, in LTE-A TDD system, the quantity of the PUCCH that supports in conjunction with UE divides into groups to feed back a plurality of ACK/NACK information, the ACK/NACK information that can effectively reduce on the different subframes merges the influence of the system effectiveness decline that is caused, and improves the efficiency of transmission of system.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (16)
1. the method for a transferring ACK/nack message is characterized in that, comprising:
Obtain the quantity of the Physical Uplink Control Channel PUCCH that user equipment (UE) can transmit;
Quantity according to described PUCCH is divided into groups to ACK/NACK information;
ACK/NACK information in every group is merged, and the ACK/NACK information in every group is carried out multiplexing transmission; Wherein, describedly ACK/NACK information in every group is carried out multiplexing transmission comprise:, the ACK/NACK information in every group is carried out multiplexing transmission according to the multiplex mode of R8 if the quantity of the ACK/NACK information that merges in the group is not more than at 4 o'clock; If the quantity of the ACK/NACK information that merges in the group greater than 4 o'clock, uses the multiplex mode of expansion that the ACK/NACK information in every group is carried out multiplexing transmission.
2. the method for claim 1 is characterized in that, according to the quantity of described PUCCH ACK/NACK information is divided into groups to comprise:
According to the quantity of described PUCCH the descending sub frame of needs feeding back ACK/nack message in same sub-frame of uplink is divided into the P group; Wherein, the value of described P is the quantity of described PUCCH;
Be divided in the different groupings according to the ACK/NACK information of grouping situation the descending sub frame correspondence.
3. method as claimed in claim 2 is characterized in that, according to the grouping situation ACK/NACK information of descending sub frame correspondence is divided in the different groupings to comprise:
Be divided in the different groupings according to the time sequencing of descending sub frame ACK/NACK information the descending sub frame correspondence; And/or,
, to configuration 5, be divided in the different groupings in uplink-downlink configuration 1 according to the ACK/NACK information that puts in order the descending sub frame correspondence of descending sub frame.
4. method as claimed in claim 3 is characterized in that, according to the time sequencing of descending sub frame the ACK/NACK information of descending sub frame correspondence is divided in the different groupings to comprise:
Continuous descending sub frame is divided into one group, discontinuous descending sub frame divide not on the same group in.
5. method as claimed in claim 3 is characterized in that, according to the grouping situation ACK/NACK information of descending sub frame correspondence is divided in the different groupings also to comprise:
Select the sub-frame number of descending sub frame in the P-1 group to be
And select the sub-frame number of the descending sub frame in other a group to be
Wherein, the value of M is the total amount of descending sub frame;
6. method as claimed in claim 2 is characterized in that, the ACK/NACK information in every group is merged comprise:
The ACK/NACK information of the descending sub frame correspondence on the same carrier wave in every group is merged.
7. the method for claim 1 is characterized in that, in other uplink-downlink configuration outside uplink-downlink configuration 5, when the quantity of the quantity of multicarrier and described PUCCH is identical, according to the quantity of described PUCCH ACK/NACK information is divided into groups also to comprise:
Determine the quantity of grouping according to the quantity of multicarrier, and the ACK/NACK information of the descending sub frame correspondence in each carrier wave is divided into one group.
8. method as claimed in claim 7 is characterized in that, the ACK/NACK information in every group is carried out multiplexing transmission comprise:
Multiplex mode according to R8 carries out multiplexing transmission to the ACK/NACK information in every group.
9. the equipment of a transferring ACK/nack message is characterized in that, comprising:
Acquisition module is used to obtain the quantity of the PUCCH that UE can transmit;
Grouping module, the quantity that is used for the described PUCCH that obtains according to described acquisition module is divided into groups to ACK/NACK information;
Composite module is used for the ACK/NACK information in every group after the grouping module grouping is merged;
Transport module is used for the ACK/NACK information in every group is carried out multiplexing transmission; Specifically be used for,, the ACK/NACK information in every group carried out multiplexing transmission according to the multiplex mode of R8 if the quantity of the ACK/NACK information that merges in the group is not more than at 4 o'clock; If the quantity of the ACK/NACK information that merges in the group greater than 4 o'clock, uses the multiplex mode of expansion that the ACK/NACK information in every group is carried out multiplexing transmission.
10. equipment as claimed in claim 9 is characterized in that, described grouping module comprises:
Processing sub is used for according to the quantity of described PUCCH needs being divided into the P group at the descending sub frame of same sub-frame of uplink feeding back ACK/nack message; Wherein, the value of described P is the quantity of described PUCCH;
The grouping submodule is used for being divided in the different groupings according to the ACK/NACK information of grouping situation with the descending sub frame correspondence.
11. equipment as claimed in claim 10 is characterized in that,
Described grouping submodule specifically is used for, and is divided in the different groupings according to the time sequencing of the descending sub frame ACK/NACK information with the descending sub frame correspondence; And/or,
, to configuration 5, be divided in the different groupings in uplink-downlink configuration 1 according to the ACK/NACK information that puts in order the descending sub frame correspondence of descending sub frame.
12. equipment as claimed in claim 11 is characterized in that,
Described grouping submodule also is used for, and continuous descending sub frame is divided into one group, discontinuous descending sub frame divide not on the same group in.
13. equipment as claimed in claim 12 is characterized in that,
Described grouping submodule also is used for, and selects the sub-frame number of descending sub frame in the P-1 group to be
And select the sub-frame number of the descending sub frame in other a group to be
Wherein, the value of M is the total amount of descending sub frame;
14. equipment as claimed in claim 10 is characterized in that,
Described composite module specifically is used for, and the ACK/NACK information of the descending sub frame correspondence on the same carrier wave in every group is merged.
15. equipment as claimed in claim 9 is characterized in that, in other uplink-downlink configuration outside uplink-downlink configuration 5, and when the quantity of the quantity of multicarrier and described PUCCH is identical,
Described grouping module also is used for, and determines the quantity of grouping according to the quantity of multicarrier, and the ACK/NACK information of the descending sub frame correspondence in each carrier wave is divided into one group.
16. equipment as claimed in claim 15 is characterized in that,
Described transport module also is used for, and according to the multiplex mode of R8 the ACK/NACK information in every group is carried out multiplexing transmission.
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| CN106559174A (en) * | 2015-09-29 | 2017-04-05 | 北京信威通信技术股份有限公司 | Physical Uplink Control Channel processing method and processing device |
| CN112737738A (en) * | 2018-05-21 | 2021-04-30 | 华为技术有限公司 | Method and device for transmitting uplink control information |
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| CN101572591A (en) * | 2008-04-28 | 2009-11-04 | 鼎桥通信技术有限公司 | Method for transmitting a plurality of ACKs/NACKs |
| CN101588224A (en) * | 2009-05-19 | 2009-11-25 | 中兴通讯股份有限公司 | Method and system for transmitting correct/wrong reply message |
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| CN101588224A (en) * | 2009-05-19 | 2009-11-25 | 中兴通讯股份有限公司 | Method and system for transmitting correct/wrong reply message |
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