WO2012065438A1 - Méthode et terminal de confirmation de retour d'information - Google Patents

Méthode et terminal de confirmation de retour d'information Download PDF

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Publication number
WO2012065438A1
WO2012065438A1 PCT/CN2011/075961 CN2011075961W WO2012065438A1 WO 2012065438 A1 WO2012065438 A1 WO 2012065438A1 CN 2011075961 W CN2011075961 W CN 2011075961W WO 2012065438 A1 WO2012065438 A1 WO 2012065438A1
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WIPO (PCT)
Prior art keywords
information
group
terminal
groups
pdsch
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PCT/CN2011/075961
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English (en)
Chinese (zh)
Inventor
戴博
梁春丽
任璐
杨维维
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中兴通讯股份有限公司
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Publication of WO2012065438A1 publication Critical patent/WO2012065438A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements

Definitions

  • a radio frame (Radio Frame) in a Long Term Evolution (LTE) system includes a Frequency Division Duplex (FDD) mode and a Time Division Duplex (TDD).
  • the frame structure of the pattern. 1 is a schematic diagram of a frame structure in an FDD system according to the related art. As shown in FIG. 1, in a frame structure of an FDD mode, a radio frame of 10 milliseconds (ms) is composed of twenty lengths of 0.5 ms, numbered as A slot of 0 to 19 is composed, and slots 2i and 2i+1 form a subframe of subframe 1 (frame) i (where 0 ⁇ i ⁇ 9).
  • Subframe i is defined as a combination of two slots 2i and 2i+1 that are 0.5 ms long (where 0 ⁇ i ⁇ 9) radical.
  • the standard cyclic prefix (Normal Cyclic Prefix, When referred to as Normal CP, a time slot contains seven symbols with a length of 66.7 microseconds (us), where the CP length of the first symbol is 5.21us, and the length of the remaining six symbols is 4.69 us.
  • the Extended Cyclic Prefix Extended Cyclic Prefix
  • a time slot contains 6 symbols. Symbol CP length are 16.67 us.
  • Table 1 The uplink and downlink configurations supported by each subframe are shown in Table 1.
  • D denotes a subframe dedicated to downlink transmission
  • U denotes a subframe dedicated to uplink transmission
  • S denotes a DwPTS (Downlink Pilot Time Slot), guard interval Special subframes of the three domains (Guard Period, GP for short) and UpPTS (Uplink Pilot Time Slot).
  • Table 1 Schematic diagram of the uplink and downlink configuration supported by each sub-frame
  • a Physical Downlink Control Channel is used for downlink control information (Downlink Control Information, DCI for short), and includes uplink and downlink scheduling information and uplink power control information.
  • the DCI format (DCI format) is divided into the following types: DCI format 0, DCI format 1, DCI format 1 A, DCI format IB, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 3 and DCI format 3 A, etc.
  • the physical resource of the PDCCH is transmitted in units of Control Channel Element (CCE).
  • the size of one CCE is 9 Resource Element Group (REG), that is, 36 Resource Elements.
  • a PDCCH may occupy 1, 2, 4 or 8 CCEs.
  • the uplink and downlink subframes are corresponding, so when PDSCH
  • the UE When only one transport block is included, the UE shall feed back 1-bit ACK (Acknowledge)/NACK (Non-Acknowledge) response information; when PDSCH contains two transmissions At the time of the block, the UE needs to feed back 2 bits of ACK/NACK response information.
  • the uplink and downlink subframes are not corresponding, that is, the ACK/NACK response information corresponding to the multiple downlink subframes needs to be in the physical uplink control channel (PUCCH) of one uplink subframe.
  • the upper transmission, where the set of multiple downlink subframes corresponding to one uplink subframe constitutes a "bundling window".
  • ACK/NACK response information there are two methods for transmitting ACK/NACK response information in a TDD system:
  • One is a bundling method, and the core idea of the method is to provide feedback in the uplink subframe.
  • the ACK/NACK response information corresponding to the row subframe transmission block is logically ANDed according to the codeword stream index. If at least one of the downlink subframes includes 2 transport blocks, the UE needs to feed back 2 bits of ACK/NACK response information, if Each subframe contains one transport block, then the UE needs to feed back 1-bit ACK/NACK response information; the other is a multiplexing with channel selection (multiplexing) method.
  • the core idea of the method is to use different PUCCHs.
  • the channel and the different modulation symbols on the channel indicate different feedback states of the downlink subframe that need to be fed back in the uplink subframe.
  • the downlink subframe includes multiple transport blocks, the multiple transport blocks of the downlink subframe are first used.
  • the feedback ACK/NACK response information is logically AND (also called spatial bundling) operation and then channel selection is performed, and then transmitted using PUCCH format lb, and up to 4 bits of ACK/NACK information can be transmitted.
  • LTE-A Long Term Evolution Advanced
  • CA Carrier Aggregation
  • a main object of the present invention is to provide a method for acknowledging information feedback and a terminal, so as to at least solve the problem that the signaling load is too large and the normal service transmission is affected due to the multiplication of the feedback acknowledgment information in the carrier aggregation scenario. problem.
  • a confirmation information feedback method is provided.
  • the acknowledgment information feedback method the terminal divides the acknowledgment information of the PDSCH corresponding to one uplink subframe into a predetermined value M groups; the terminal maps the acknowledgment information corresponding to each group of the predetermined value M groups to the predetermined according to the DAI A quantity of feedback information, wherein the acknowledgement information includes an ACK or a NACK; the terminal feeds back the feedback information on the uplink subframe.
  • the terminal divides the acknowledgment information of the PDSCH corresponding to the uplink subframe into the predetermined value M groups, including: the terminal divides the acknowledgment information corresponding to the downlink subframe i corresponding to the uplink subframe into the Hi group; the predetermined group M
  • the Hi group corresponding to the downlink subframe i satisfies the following relationship: where P is the number of downlink subframes corresponding to the uplink subframe.
  • the terminal divides the acknowledgment information of the physical downlink shared channel PDSCH corresponding to one uplink subframe into a predetermined value M groups: the terminal divides the acknowledgment information into a predetermined value M groups according to at least one of the following manners: When P is 1, Q is At 3 o'clock, M is 3, wherein the confirmation information corresponding to each monthly service cell configured by the terminal is a group; when P is 1 and Q is 4, M is 4, wherein each terminal configured by the terminal The acknowledgment information corresponding to the cell is a group; when P is 1 and Q is 5, M is 4, where two auxiliary '' in the serving cell configured by the terminal and the acknowledgment information corresponding to the area are a group, except for the auxiliary' The acknowledgment information corresponding to each serving cell in the other serving cell except the area is a group; when P is 2, Q is greater than
  • the method further includes: the terminal sorting according to the index of the downlink subframe and the index of the serving cell on the same downlink subframe.
  • the ordering, by the terminal, the predetermined value M groups according to the index of the downlink subframe and the primary cell and the secondary cell of the serving cell in the same downlink subframe includes: the terminal uses one of the following manners according to the index of the downlink subframe and the same downlink subframe.
  • the order of the primary cell and the secondary cell of the last month is sorted by the predetermined number of M groups:
  • the terminal arranges the predetermined value M groups according to the index of the downlink subframe from small to large, and the group on the same downlink subframe follows the first
  • the order of the primary cell and the secondary cell is sorted;
  • the terminal arranges the predetermined value M groups according to the index of the downlink subframe from small to large, and the groups in the same downlink subframe are sorted according to the order of the primary secondary cell and the primary primary cell.
  • the method further includes: the terminal dividing the acknowledgement information corresponding to the PDSCH where the PDCCH does not exist into the predetermined group.
  • the division of the acknowledgment information corresponding to the PDSCH in which the PDCCH does not exist into the predetermined group includes: the terminal divides the acknowledgment information corresponding to the PDSCH in which the PDCCH does not exist into a predetermined group of one of the following: a predetermined group of the first group of the M groups, The second group, the group corresponding to the first downlink subframe of the downlink subframe corresponding to the uplink subframe, and the group corresponding to the secondary cell of the first downlink subframe in the downlink subframe corresponding to the uplink subframe, according to the acknowledgement information The location of the downlink subframe in which it is located and the location determined by the location of the serving cell.
  • the total number of PDCCHs allocated to the PDSCH and the semi-persistent scheduling SPS released by the DAI for the downlink subframe in which the DAI is located and all the downlink subframes before the downlink subframe is located where
  • the PDSCH is one of the following: a PDSCH in which a PDCCH exists; a PDSCH in which a PDCCH exists and a PDSCH in which a PDCCH does not exist.
  • the mapping of the confirmation information corresponding to each of the predetermined groups of M groups to the predetermined number of feedback information according to the DAI includes: the terminal confirming the information corresponding to each of the predetermined groups of M groups by logical AND operation according to the DAI.
  • the method further includes: when the PDCCH corresponding to the acknowledgment information corresponding to the one of the predetermined groups of M groups is located in the primary cell, the corresponding PDCCH is located in the group corresponding to the acknowledgment message of the primary cell, and the PUCCH resource corresponding to the PDCCH is located according to the control channel element where the PDCCH is located. CCE location mapping is obtained.
  • the method further includes: the PUCCH resource is obtained by using the CCE with the smallest index in the CCE of the primary cell; or the PUCCH resource is obtained by using the CCE with the smallest index among the CCEs corresponding to the cell with the highest priority in the pre-defined order on the primary cell.
  • the method further includes: when the PDCCH corresponding to the acknowledgment information in the group of the predetermined value is not located in the primary cell, and the corresponding PDCCH is not located in the upper layer of the PUCCH resource corresponding to the group corresponding to the acknowledgment message of the primary cell.
  • the obtained PUCCH resource is obtained; or the PUCCH resource corresponding to the group corresponding to the PDCCH that is not located in the primary cell is obtained according to the PUCCH resource configured by the higher layer and the ACK/NACK resource indication signaling ARI.
  • the method further includes: the terminal dividing the acknowledgment information of the PDSCH into the predetermined value M groups includes: the number of the serving cells of the terminal is 2, and when the number of the downlink subframes corresponding to the uplink subframe is greater than K, determining that M is equal to 2, where The confirmation information corresponding to each serving cell is 1 group, and K is equal to 1 or 2.
  • the mapping of the acknowledgment information corresponding to each of the predetermined groups of M groups to the predetermined number of feedback information according to the DAI includes: the terminal maps the acknowledgment information corresponding to each of the predetermined groups of M groups to 2 bits according to the DAI. Feedback information.
  • the DAI is the total number of PDSCHs and identity SPS release PDCCHs allocated to the terminal in the downlink subframe of the serving cell in which the uplink subframe corresponding to the uplink subframe is located and all the downlink subframes before the downlink subframe, where PDSCH is the following One: a PDSCH in which a PDCCH exists; a PDSCH in which a PDCCH exists and a PDSCH in which a PDCCH does not exist.
  • the mapping of the confirmation information corresponding to each of the predetermined groups of M groups to the predetermined number of feedback information according to the DAI includes: the terminal sorts the confirmation information according to the value of the DAI corresponding to the confirmation information from small to large, and has no DAI.
  • the confirmation information is located in front of the confirmation message with DAI, where confirmation
  • the information is the confirmation information in each group of the predetermined value M groups; the terminal maps the number of consecutive ACKs from the first confirmation information in the sorted confirmation information to a predetermined number of feedback information, wherein, when the PDSCH corresponds to two When confirming the information, the two confirmation information are logically ANDed and then sorted.
  • the terminal mapping the confirmation information corresponding to each of the predetermined values M groups to the predetermined number of feedback information according to the DAI according to the DAI includes: the terminal spatially logically confirms the confirmation information of each of the predetermined values M groups.
  • the number of ACKs obtained after the operation is mapped to a predetermined number of feedback information, where the spatial logic and operation are to map the two confirmation information into one confirmation information by logic AND operation when the two acknowledgment information is corresponding to one PDSCH; the terminal will reserve All acknowledgment information of each of the M groups is logically AND operated to an acknowledgment information, and when the feedback information is ACK, the number of PDSCHs received by the feedback terminal in the group; the terminal will be a predetermined value of M groups All the acknowledgment information of each group in the group is logically ANDed to map the two acknowledgment information into one acknowledgment information, and when the feedback information is ACK, the count value corresponding to the last DAI received by the terminal in the group is fed back.
  • the method further includes: the two sets of feedback information are in the order that the feedback information of the corresponding group of the primary primary cell is the feedback information of the corresponding group of the secondary cell; or the sequence of the feedback information of the two groups is the feedback information of the corresponding group of the primary secondary cell in the corresponding group of the primary cell Feedback information.
  • the method further includes: determining, by the terminal according to the DAI value, that there is a PDCCH loss, determining that the acknowledgement message corresponding to the lost PDCCH is NACK or DTX.
  • the method further includes: when there is no acknowledgement information feedback in the predetermined value M groups, the terminal determines that the acknowledgement information of the group without the acknowledgement information feedback is NACK or DTX; or the terminal determines that the number of feedback ACKs of the group without the acknowledgement information feedback is 0. .
  • the terminal divides the acknowledgement information of the PDSCH into the predetermined value M groups, including: the number of serving cells of the terminal is 2, and when the number of downlink subframes corresponding to the configuration window of the PDSCH is 2, determining that M is equal to 4, where each downlink sub
  • the acknowledgment information corresponding to each serving cell of the frame is a group;
  • the terminal mapping the acknowledgment information corresponding to each group of the predetermined value M groups to the predetermined number of feedback information according to the DAI includes: the terminal sets the predetermined value M groups according to the DAI
  • the confirmation information corresponding to each group is mapped to a confirmation information by logic and operation.
  • the two PUCCHs of the corresponding group in the primary cell are obtained by mapping the CCE position mapping of the control channel element with the DAI equal to 1 corresponding to the PDCCH in the corresponding group of the primary cell, and the CCE location mapping of the control channel element corresponding to the PDCCH corresponding to the DAI equal to 2, where the primary cell corresponds to
  • the PUCCH resource is a control channel where the DAI is equal to 1 corresponding to the PDCCH.
  • the PUCCH resource is a PUCCH resource configured by the upper layer when the eNB does not have the acknowledgment information in the corresponding group of the primary cell.
  • the two PUCCHs of the corresponding group of the secondary cell are obtained according to the PUCCH resource and the ARI configured by the upper layer, or the two PUCCHs of the corresponding group of the secondary cell are obtained according to the PUCCH resource configured by the upper layer.
  • a terminal is also provided.
  • the terminal includes: a dividing module, configured to divide the acknowledgement information of the PDSCH corresponding to one uplink subframe into a predetermined value M groups; and a mapping module, configured to: each group of the predetermined value M groups according to the DAI The corresponding acknowledgment information is respectively mapped to a predetermined number of feedback information, where the acknowledgment information includes an acknowledgment message (ACK) or a non-acknowledgement message (NACK), and a feedback module is configured to feed back feedback information on the uplink subframe.
  • a dividing module configured to divide the acknowledgement information of the PDSCH corresponding to one uplink subframe into a predetermined value M groups
  • a mapping module configured to: each group of the predetermined value M groups according to the DAI
  • the corresponding acknowledgment information is respectively mapped to a predetermined number of feedback information, where the acknowledgment information includes an acknowledgment message (ACK) or a non-acknowledgement message (NACK), and a feedback module is configured to feed back feedback information on the uplink subframe.
  • FIG. 1 is a schematic diagram of a frame structure in an FDD system according to the related art
  • FIG. 2 is a schematic diagram of a frame structure in a TDD system according to the related art
  • FIG. 3 is a downlink corresponding to an uplink subframe in a carrier aggregation scenario according to the related art.
  • FIG. 4 is a flowchart of a method for acknowledging information feedback according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram 1 showing a total number of DAIs according to an embodiment of the present invention
  • FIG. 6 is a representation of DAI according to an embodiment of the present invention.
  • Schematic diagram 2; 3 is a schematic diagram of a DAI representation according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a DAI representation according to an embodiment of the present invention; and
  • FIG. 9 is a structural block diagram of a terminal according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for acknowledging information feedback according to an embodiment of the present invention. As shown in FIG. 4, the method includes: Step S402: A terminal corresponding to an uplink subframe The acknowledgment information of the physical downlink shared channel PDSCH is divided into a predetermined value group. Step S404: The terminal maps the acknowledgment information corresponding to each group of the predetermined value into a predetermined number of feedback information according to the downlink allocation information DAI, wherein the acknowledgment information includes an acknowledgment message (ACK) or a non-acknowledgement message (NACK).
  • ACK acknowledgment message
  • NACK non-acknowledgement message
  • Step S406 The terminal feeds back the feedback information on the uplink subframe.
  • the terminal divides the acknowledgement information of the PDSCH corresponding to one uplink subframe into a predetermined value group; and maps the confirmation information corresponding to each group of the predetermined value into a predetermined number of feedback information according to the DAI, respectively.
  • the feedback information is fed back in the uplink subframe, which solves the problem that the signaling load is excessively increased or even affects the normal service transmission due to the multiple increase of the feedback acknowledgement information in the carrier aggregation scenario in the related art, thereby improving the confirmation information.
  • the effect of feedback efficiency is described below.
  • the terminal divides the acknowledgement information corresponding to the downlink subframe i corresponding to the uplink subframe into the Hi group; the predetermined group M and the downlink subframe correspond to
  • P is the number of downlink subframes corresponding to the uplink subframe.
  • the terminal uses the sum of the groups of the corresponding acknowledgement information in the downlink subframe as the group of the downlink subframe acknowledgement information, which is simple and easy, and improves the efficiency of the acknowledgement information packet.
  • step S402 is described below.
  • the terminal divides the confirmation information into predetermined groups of M according to at least one of the following manners: When P is 1 and Q is 3, M is 3, where the acknowledgment information corresponding to each serving cell configured by the terminal is a group; when P is 1 and Q is 4, M is 4, where the terminal is configured The acknowledgment information corresponding to each serving cell is a group; when P is 1 and Q is 5, M is 4, where the acknowledgment information corresponding to the two secondary cells in the serving cell configured by the terminal is a group, except for the secondary cell.
  • the acknowledgment information corresponding to each service 'j the area is a group; when P is 2, Q is greater than or equal to 2, M is 4, where each downlink subframe corresponding to the uplink subframe The corresponding acknowledgment information is divided into two groups, the acknowledgment information corresponding to the primary cell in the downlink subframe is one group, and the acknowledgment information corresponding to the secondary cell is another group; when P is 3, Q is greater than or equal to 2, M is 4,
  • the acknowledgment information corresponding to one downlink subframe in the downlink subframe corresponding to the uplink subframe is divided into two groups, and the acknowledgment information corresponding to the primary cell in the downlink subframe is one group, and the acknowledgment information corresponding to the secondary cell is another group, and the remaining information
  • the acknowledgement information corresponding to each subframe in the downlink subframe is divided into one group; when P is 4, Q is large.
  • the terminal sorts the predetermined value M groups according to the index of the downlink subframe and the order of the primary cell and the secondary cell of the serving cell on the same downlink subframe, including: the terminal uses one of the following manners according to the index of the downlink subframe and the same
  • the order of the primary cell and the secondary cell of the serving cell on the downlink subframe sorts the predetermined value M groups: The terminal arranges the predetermined value M groups according to the index of the downlink subframe from small to large, and the groups in the same downlink subframe are sorted according to the order of the primary primary cell and the secondary secondary cell; the terminal follows the index of the downlink subframe from small to large.
  • the predetermined value M groups are arranged, and the groups on the same downlink subframe are sorted according to the order of the primary secondary cell and the primary primary cell.
  • the terminal sorts the packets in the manner described above, improving the flexibility of sorting.
  • the method further includes: the terminal dividing the acknowledgement information corresponding to the PDSCH where the PDCCH does not exist into the predetermined group.
  • the acknowledgement information corresponding to the PDSCH in which the PDCCH does not exist is divided into predetermined groups, which improves the rationality of the packet.
  • the PDSCH without the PDCCH may be an SPS.
  • the acknowledgement information corresponding to the PDSCH in which the PDCCH does not exist is divided into the predetermined group, which facilitates the search, and improves the rationality and flexibility of the packet.
  • the DAI is allocated to the PDSCH of the terminal and all the downlink subframes before the downlink subframe in which the DAI is located, and the semi-persistent scheduling (SPS) release PDCCH is allocated to the terminal.
  • SPS semi-persistent scheduling
  • the total number, where PDSCH is one of the following: PDSCH with PDCCH present; PDCCH with PDCCH and PDSCH without PDCCH.
  • a preferred embodiment of step S404 is described below.
  • the terminal maps the confirmation information corresponding to each of the predetermined values M groups to a predetermined amount of feedback information by logical AND operation according to the DAI, wherein the predetermined number is 1.
  • the predetermined number is 1.
  • the terminal determines that the PDCCH is lost according to the DAI, the acknowledgment information corresponding to the group in which the PDCCH is lost is mapped to a non-acknowledgement message being a NACK or a non-persistent state DTX.
  • the method further includes: the terminal determining that there is no corresponding acknowledgement message in the M group of the predetermined value, and mapping the acknowledgement message corresponding to the group of the corresponding acknowledgement message to NACK or DTX.
  • the terminal determines the PDCCH loss according to the DAI
  • the specific information is fed back, and the correctness and efficiency of the acknowledgement information feedback are improved.
  • the method further includes: when the PDCCH corresponding to the acknowledgment information corresponding to the one of the predetermined groups of the M groups is located in the primary cell, the corresponding PDCCH is located in the group corresponding to the acknowledgment message of the primary cell, and the PUCCH resource corresponding to the PDCCH is located according to the PDCCH. Control channel element CCE location mapping is obtained. With the preferred embodiment, the efficiency and accuracy of the acquisition of the confirmation information when the PDCCH corresponding to the corresponding acknowledgment information is located in the primary cell is improved.
  • the PUCCH resource is obtained by using the CCE with the smallest index in the CCE of the primary cell; or the PUCCH resource is obtained by the CCE with the smallest index among the CCEs corresponding to the cell with the highest priority in the pre-defined order on the primary cell.
  • the method further includes: when the acknowledgment information corresponding to the PDSCH of the PDCCH does not exist in the acknowledgment information corresponding to the PDSCH of the PDCCH, the group corresponding to the acknowledgment message corresponding to the PDSCH of the PDCCH is corresponding to the group
  • the PUCCH resource is obtained by the PUCCH resource corresponding to the PDSCH in which the PDCCH does not exist; or the PUCCH resource corresponding to the group in which the acknowledgment message corresponding to the PDSCH of the PDCCH does not exist through the higher layer configured PUCCH resource and the predefined ACK/NACK resource indication signaling ( ARI) obtained.
  • step S402 when the acknowledgment information corresponding to one group is only the acknowledgment information corresponding to the PDSCH of the PDCCH, the efficiency and accuracy of the information acquisition are confirmed.
  • the number of serving cells of the terminal is 2, and when the number of downlink subframes corresponding to the uplink subframe is greater than K, it is determined that M is equal to 2,
  • the acknowledgement information corresponding to each serving cell is 1 group, and K is equal to 1 or 2.
  • grouping is performed according to the number of serving cells and downlink subframes, which improves the efficiency and accuracy of the packet.
  • step S404 (corresponding to still another preferred embodiment of step S402 described above;).
  • the terminal maps the confirmation information corresponding to each of the predetermined values M groups into 2-bit feedback information according to the DAI.
  • the amount of feedback information is reduced, thereby improving feedback efficiency.
  • the number of ACKs obtained after the operation is mapped to a predetermined number of feedback information, where the spatial logic and the operation are: when one PDSCH corresponds to two acknowledgment information, the two acknowledgment information are mapped into one acknowledgment information by logical AND operation; the terminal will have a predetermined value All acknowledgment information of each of the M groups is logically AND operated to an acknowledgment information (1-bit feedback information), and when the feedback information is ACK, the number of PDSCHs received by the terminal in the group is fed back; The terminal maps all the acknowledgment information of each group of the predetermined value M groups to one acknowledgment information through logic and operation, and when the feedback information is ACK, the feedback terminal receives the last in the group. The count value corresponding to a DAI.
  • the mapping of the feedback information is performed in the above manner, and the amount of feedback information is reduced.
  • the feedback order of the two sets of feedback information is feedback information of the corresponding information of the first primary cell corresponding group, and the feedback information of the corresponding group of the zone; or the order of the two sets of feedback information is the first auxiliary 'j, the zone
  • the feedback information of the corresponding group is further feedback information of the corresponding group of the primary cell.
  • the method further includes: determining, by the terminal, that there is a PDCCH loss according to the DAI value, determining that the acknowledgement message corresponding to the lost PDCCH is NACK or DTX.
  • the terminal determines the PDCCH loss according to the D AI value, feeds back specific information, and improves the accuracy and efficiency of the feedback information.
  • the method further includes: when there is no acknowledgment information feedback in the group of predetermined values, the terminal determines that the acknowledgment information of the group that does not acknowledge the information feedback is NACK or DTX; or the terminal determines the feedback ACK of the group that does not acknowledge the information feedback. The number is 0.
  • the accuracy and efficiency of the feedback information is improved.
  • the total number of PDCCHs that are allocated to the PDSCH of the terminal and the number of the PDCCHs that are allocated to the downlink are all the same.
  • the PDSCH corresponding to the PDSCH allocated on the downlink subframe i is the same.
  • Only the PDSCH with the PDCCH may be referred to as the PDSCH with the PDCCH and the PDSCH without the PDCCH.
  • the DAI information may be represented by 2-bit data, and the value may be 00, 01, 10 or 11 respectively.
  • the DAI information can be transmitted in a downlink control information format (DCI Format) indicating downlink scheduling information.
  • DCI Format downlink control information format
  • the grouping can be performed in the following manner:
  • the number of serving cells configured by the UE is Q, and the specific grouping scheme is as follows: When ⁇ is 1 and Q is 3, ⁇ is 3, and the monthly traffic cell is The corresponding confirmation information is a group; when ⁇ is 1, Q is 4, ⁇ is 4, and the confirmation information corresponding to each month's service cell is a group; when ⁇ is 1, Q is 5, ⁇ is 4,
  • the acknowledgment information corresponding to the two secondary cells is a group, and the acknowledgment information corresponding to each service 'j and the area in the remaining serving cells is a group; when P is 2, Q is greater than or equal to 2, M is 4, and each subframe corresponds to The acknowledgment information is divided into two groups, and the acknowledgment information corresponding to the primary cell in the downlink subframe is one group, and the acknowledgment information corresponding to the secondary cell is another group.
  • the acknowledgement information corresponding to one downlink subframe is divided into two groups, and the acknowledgment information corresponding to the primary cell in the downlink subframe is a group, and the acknowledgment information corresponding to the secondary cell
  • the acknowledgement information corresponding to each subframe in the remaining downlink subframes is divided into one group.
  • the downlink subframes divided into 2 groups are the last subframe in the configuration window, or the first subframe; other subframes are not excluded.
  • P is 4 and Q is greater than or equal to 2
  • M is 4, and the acknowledgement information corresponding to each downlink subframe is divided into 1 group.
  • Table 3 shows the correspondence between the number of serving cell Qs and the number of downlink subframes P and the number of groups M.
  • Table 3 Table 3 Correspondence table between the number of serving cell Qs and the number of downlink subframes P and the number of groups M
  • the group of the acknowledgment information of the PDSCH without the PDCCH is: the first group, or the second group, or the group corresponding to the first downlink subframe primary cell in the configuration window, or the first downlink in the configuration window.
  • the group corresponding to the subframe secondary cell, or the corresponding group is determined according to the above rules.
  • the UE determines whether there is PDCCH loss according to the received DAI value, and the mapping information for the group with the possible PDCCH loss is NACK or DTX.
  • the mapping information corresponding to the group is NACK or DTX.
  • the PUCCH resource corresponding to the group is obtained according to the PUCCH resource configured by the upper layer, or the PUCCH resource corresponding to the group is based on the PUCCH resource and A configured by the upper layer.
  • /N resource indicator (A/N Resource indicator, ARI for short) is obtained.
  • the corresponding PUCCH resource of the group is obtained by the PUCCH resource corresponding to the PDSCH without the PDCCH, or the corresponding group
  • the PUCCH resource is obtained by the PUCCH resource of the upper layer configuration and the predefined ARI.
  • Embodiment 2 This embodiment provides a method for confirming information feedback. This embodiment combines the first embodiment and the preferred embodiment thereof. In this embodiment, an uplink subframe corresponding configuration window is P downlink subframes.
  • the number of serving cells configured by the UE is Q
  • the number of transport blocks allocated by the cell j in the downlink subframe i is ⁇ ", where P can be 1, 2, 3, 4, 9, Q can be 1, 2, 3, 4 , 5 , Z " can be 1, 2 .
  • FIG. 5 is a schematic diagram 1 of the total number of DAIs according to an embodiment of the present invention, as shown in FIG.
  • the DAI of the first downlink subframe is 00, indicating that the value is 5, the DAI of the second downlink subframe is 10, indicating that the value is 10, and the DAI of the third downlink subframe is 01, indicating that the value is 15 .
  • the DAI of the fourth downlink subframe is 11, indicating that the value is 20.
  • the UE determines the value corresponding to the received DAI according to the received DAI value and the received number of PDSCHs. For example, if the UE detects that the PDSCH is 3 on the first downlink subframe and the DAI detected on the first downlink subframe is 00, then the value represented by the DAI must be 5, and it is impossible to be 1 or 9. Other values, because, as can be seen from Table 2, the value corresponding to 00 is 1/5/9/13/17, etc., the UE has detected 3, then, it is impossible to be 1, and, the maximum is given in one subframe. The number of PDSCHs of the UE is 5, and it is impossible to be greater than 5, so it is impossible to be 9 or other values greater than 5.
  • the number of PDSCHs sent by the base station to the UE in the first downlink subframe is five, but the UE receives only three PDSCHs, and two PDSCHs are lost.
  • the mapping information corresponding to the first downlink subframe is NACK.
  • the UE detects that the PDSCH is 2 on the second downlink subframe, and the DAI detected on the second downlink subframe is 10. Therefore, the value represented by the DAI must be 10, and it is impossible to be 6 or 14 or the like.
  • the value because, as shown in Table 2, the value corresponding to 10 is 2/6/10/14/18, etc., the UE already knows that the number of PDSCHs transmitted in the first subframe is 5, and is detected on the second subframe.
  • the DAI on the second downlink subframe cannot be 6, and the maximum number of subframes is The number of PDSCHs for the UE is 5, and the two subframes cannot be greater than 10, so it is impossible to have 14 other values greater than 10.
  • the number of PDSCHs sent by the base station to the UE in the second downlink subframe is five, but the UE only receives two PDSCHs, and three PDSCHs are lost.
  • the mapping information corresponding to the second downlink subframe is NACK.
  • the logical AND operation is that when all the logic and operation acknowledgment information are ACK, the result of the logical AND operation is ACK, and only one acknowledgment information is NACK in all logic and operation acknowledgment information, and the logical AND operation result is NACK. It is assumed that the corresponding acknowledgement message on the third downlink subframe is ACK, and the information mapped in the third subframe is ACK.
  • the number of PDSCHs is 5, no PDSCH is lost, and the logical information and operation of the confirmation information of the five PDSCHs are mapped into one information; Assume that the acknowledgement message in the corresponding acknowledgement message on the fourth downlink subframe is NACK, and the information mapped in the fourth subframe is NACK;
  • the information sent by the UE is NACK, NACK, ACK, NACK; the information is sent by channel selection; and the third embodiment provides a method for feedback confirmation.
  • This embodiment combines the first embodiment and the preferred embodiment thereof.
  • an uplink subframe corresponding configuration window is P downlink subframes, and the number of serving cells configured by the UE is Q, and the downlink subframe i is configured.
  • the number of transport blocks transmitted by cell j is Z u , where P can be 1, 2, 3, 4, 9, Q can be 1, 2, 3, 4, 5, ⁇ ⁇ ; . can be 1, 2.
  • the DAI refers to the number of PDSCHs that have a PDCCH (the PDCCH is present) and no PDCCH (the PDCCH does not exist).
  • the UE determines the value corresponding to the received DAI according to the received DAI value and the received number of PDSCHs. For example, the UE does not detect the PDSCH with the PDCCH on the first downlink subframe, and receives the PDSCH of the SPS without the PDCCH. Then, the UE does not receive the DAI in the first downlink subframe, and does not know the first downlink subframe. The number of PDSCHs is sent on the frame. In the second downlink subframe, the UE detects 2 PDSCHs and the DAI detected on the second downlink subframe is 00. Then, the value of the DAI is 5, which is impossible.
  • the UE can know that the number of PDSCHs sent by the base station to the UE in the first two downlink subframes is five, but the UE only receives three PDSCHs, and two PDSCHs are lost.
  • the lost PDSCH may occur in the first downlink subframe or in the second downlink subframe.
  • the mapping information corresponding to the first downlink subframe is NACK
  • the mapping information corresponding to the second downlink subframe is NACK.
  • the number of PDSCHs is 3, no PDSCH is lost, the acknowledgment information corresponding to the primary cell is one group, the acknowledgment information corresponding to the secondary cell is another group, and the acknowledgment information corresponding to each subframe in the remaining downlink subframes is divided into one group;
  • the acknowledgement information of the PDSCH is mapped into two pieces of information by grouping logic and operations. Assume that the corresponding acknowledgement message on the third downlink subframe is ACK, and the information mapped in the third subframe is ACK, ACK.
  • the information sent by the UE is NACK, NACK, ACK, ACK; the information is sent by channel selection.
  • Implementation of the four embodiments provides a method of confirming information feedback.
  • This embodiment combines the above-mentioned embodiments and the preferred embodiments thereof.
  • an uplink subframe corresponding configuration window is P downlink subframes, and the number of serving cells configured by the UE is Q, and the downlink subframe i is configured.
  • the number of transport blocks transmitted by cell j is Z u , where P can be 1, 2, 3, 4, 9, Q can be 1, 2, 3, 4, 5, ⁇ ⁇ ; . can be 1, 2.
  • the DAI has the number of PDSCHs of the PDCCH.
  • FIG. 7 is according to the present invention.
  • the DAI of the corresponding first downlink subframe is 10, indicating that the value is 3, and the PDSCH of the second downlink subframe is scheduled to be 3, and the second The DAI of the downlink subframe is 01, indicating that the value is 6, and the PDSCH of the primary cell is the PDSCH of the SPS without the PDCCH, and the DAI of the third downlink subframe is 11 , indicating that its value is 8 (does not include PDSCH without PDCCH).
  • P is 3
  • M 4
  • the acknowledgment information corresponding to the first downlink subframe is divided into two groups, and the acknowledgment information corresponding to the primary cell in the downlink subframe is one group, and the acknowledgment information corresponding to the secondary cell is another group.
  • the acknowledgment information corresponding to each subframe in the remaining downlink subframes is divided into one group; the acknowledgment information corresponding to each group is logically mapped into one information, and the information is ACK, NACK, DTX or ACK, NACK;
  • the UE determines the value corresponding to the received DAI according to the received DAI value and the received number of PDSCHs.
  • the UE detects three PDSCHs with PDCCH on the first downlink subframe, and the DAI detected on the first downlink subframe is 10. Therefore, the value of the DAI must be 3, the main 'J
  • the acknowledgment information corresponding to the area is ACK
  • the acknowledgment information corresponding to the secondary cell is ACK and NACK
  • the mapping information of the two groups corresponding to the first downlink subframe is ACK and NACK, respectively.
  • the UE detects that there are three PDSCHs with PDCCH, and the measured DAI is 01. Then, the value represented by the DAI must be 6, and the corresponding acknowledgement information is ACK, ACK, and ACK.
  • the mapping information of the group corresponding to the second downlink subframe is ACK.
  • the UE receives only one PDSCH without PDCCH in the third downlink subframe, and the acknowledgement information corresponding to the PDSCH is NACK, and the acknowledgement information of the first group is divided into a group to perform logical AND operations.
  • each group in the order of subframes to highs, each group is arranged in the order of the primary cell and the secondary cell in one subframe, and the information corresponding to the first group is ACK, and then, the PDSCH without the PDCCH After mapping, the information corresponding to the first group is NACK.
  • the mapping information of the third downlink subframe corresponding group is NACK.
  • the information sent by the UE is NACK, NACK, ACK, NACK; the information is sent by channel selection.
  • the implementation of the five embodiments provides a method of confirming information feedback.
  • This embodiment combines the foregoing embodiments and the preferred embodiments thereof.
  • the feedback method is a time domain bundling mode, which is described in detail below.
  • Step 1 In the carrier aggregation scenario, the UE divides the acknowledgement information of the PDSCH into M groups.
  • Step 2 Each group is mapped into N pieces of information; the DAI determines each group corresponding information, and the UE sends (MxN) pieces of information; wherein, DAI is represented in a downlink subframe window corresponding to an uplink subframe, where The downlink subframe of the serving cell and all the downlink subframes before the subframe are allocated to the PDSCH of the terminal and the total number of PDCCHs for the SPS release, where the PDSCH may be a PDSCH with only a PDCCH or a PDSCH with a PDCCH. And PDSCH without PDCCH.
  • the DAI information can be represented by 2-bit data, which is 00, 01, 10 or 11, and can be used to represent 1, 2, 3, 4 (or other values, as shown in Table 3, as long as the base station and The UE side can know the correspondence between the bit data and the corresponding value;), of course, the correspondence between the bit value and the actual value can be arbitrarily changed, and the DAI information can be in the downlink control information format (DCI Format) indicating the downlink scheduling information. transmission.
  • DCI Format downlink control information format
  • the number of the monthly service cells configured by the UE is 2, and when the number of corresponding downlink subframes in the configuration window is greater than K, M is 2, and the acknowledgement information corresponding to each serving cell is divided into 1 group, each group It is mapped to N-bit information, where K can be 1 or 2 and N is 2.
  • K can be 1 or 2 and N is 2.
  • the mapping method 1 arranges the acknowledgment information in a group according to the DAI value corresponding to the acknowledgment information, from small to large, and the acknowledgment information that there is no DAI in the group is located in front of the acknowledgment information of the DAI in the group, the N-bit information And the number of consecutive ACKs starting from the first acknowledgement information in the arrangement of the acknowledgement information, wherein when one PDSCH corresponds to two acknowledgement information, according to the code substream index, sorted from small to large, or one PDSCH corresponds to two
  • the confirmation information is logically operated as a confirmation message, and the logical and operation results are sorted as confirmation information.
  • N pieces of information can be represented by 2 bits of data, which are 00, 01, 10 or 11 and can be used to represent 1, 2, 3, 4 (or other values, as shown in Table 4, as long as the base station and the UE side It is sufficient to know the correspondence between the bit data and the corresponding value. Of course, the correspondence between the bit value and the actual value can be arbitrarily changed. Table 6 N message meanings
  • mapping method two When there is no acknowledgment feedback in a group, the number of feedback ACKs is zero.
  • the N-bit information indicates the number of ACKs in the acknowledgment information after the spatial logic and the operation in a group.
  • the spatial logic and operation that is, when one PDSCH corresponds to two acknowledgment information, the two acknowledgment information are mapped by logic and operation. For a confirmation message.
  • the mapping method three maps all the acknowledgment information in one group to one piece of information through logical AND operations, the N-bit information represents the information, and, when the information is ACK, feeds back the PDSCH received by the UE in the group. Quantity.
  • N pieces of information can be represented by 2 bits of data, which are 00, 01, 10 or 11 and can be used to represent 1, 2, 3, 4 (or other values, as shown in Table 6, as long as the base station and the UE side It is sufficient to know the correspondence between the bit data and the corresponding value. Of course, the correspondence between the bit value and the actual value can be arbitrarily changed.
  • the mapping method four maps all the acknowledgment information in one group to one piece of information through logical AND operations, the N-bit information represents the information, and, when the information is ACK, feeds back the last received UE in the group.
  • the order of the feedback information of the two groups is the feedback information of the corresponding group of the primary cell and the feedback information of the corresponding group of the secondary cell; or the feedback information of the two groups is the feedback information of the corresponding group of the primary and secondary cells and the feedback information of the corresponding group of the primary cell.
  • N pieces of information can be represented by 2 bits of data, which are 00, 01, 10 or 11 and can be used to represent 1, 2, 3, 4 (or other values, as shown in Table 7, as long as the base station and the UE side It is sufficient to know the correspondence between the bit data and the corresponding value. Of course, the correspondence between the bit value and the actual value can be arbitrarily changed. N message meanings
  • the default is NACK or DTX.
  • the acknowledgment information corresponding to each serving cell of each subframe is divided into one group, and each group is mapped to 1-bit information in a logical AND manner; the UE determines whether there is a PDCCH loss according to the received DAI value, The acknowledgement information corresponding to the DAI of the lost PDCCH is NACK or DTX.
  • Embodiment 6 This embodiment provides a method for acknowledging information feedback. This embodiment combines the fifth embodiment and a preferred implementation manner thereof.
  • an uplink subframe corresponding configuration window is P downlink subframes
  • the UE The number of configured serving cells is Q
  • the number of transport blocks allocated for cell j in the downlink subframe i is ⁇ ", where P can be 1, 2, 3, 4, 9, Q can be 1, 2, 3, 4, 5, Z " can be 1, 2.
  • DAI refers only to the number of PDSCHs with PDCCH.
  • FIG. 8 is an embodiment according to the present invention.
  • Figure 4 of the DAI representation, the corresponding DAI values are shown in Figure 8.
  • the UE receives the first subframe, the second subframe, and the PDSCH of the third subframe on the primary cell, and the corresponding acknowledgement information is ACK, NACK, (ACK, NACK), according to the received DAI value of 1, 2, it can be seen that there is no PDSCH loss; wherein, the acknowledgement information corresponding to the PDSCH without the PDCCH is the second acknowledgement information NACK; According to the order of the sub-frames from small to large, when one PDSCH corresponds to two acknowledgment information, the code sub-flow index is sorted from small to large. At this time, the acknowledgment information of the primary cell is NACK, ACK, (ACK, NACK). In this embodiment, mapping is performed in the following manner:
  • mapping method 1 According to the mapping method of Table 6, the N pieces of information mapped by the primary cell group are 0, and the corresponding bit is 00;
  • the UE receives the first subframe, the third subframe, and the PDSCH of the fourth subframe on the secondary cell, and the corresponding acknowledgement information is ACK, (ACK, NACK), NACK, according to the received DAI value of 1, 3, 4, it can be seen that the PDSCH of the second subframe is lost; then, the acknowledgement information corresponding to the second subframe is NACK; arranged according to the subframes from small to large, when one PDSCH corresponds to two acknowledgements, according to the code The flow index is sorted from small to large.
  • the acknowledgment information of the secondary cell is ACK, NACK, (ACK, NACK), NACK.
  • the N information of the secondary cell group mapping is 1, and the corresponding bit Is 01;
  • the information sent by the UE is 0, 0, 0, 1; the information is sent by channel selection;
  • NACK 0 can also be regarded as NACK
  • 1 can also be regarded as ACK
  • the information sent by the UE is NACK, NACK, NACK, ACK
  • the information is transmitted by channel selection; (0 can also be regarded as ACK, 1 can also be seen NACK, )
  • the UE receives the first subframe, the second subframe, and the PDSCH of the third subframe on the primary cell, and the corresponding acknowledgement information is ACK, NACK, (ACK, NACK), according to the received DAI value of 1, 2, it can be seen that there is no PDSCH loss; wherein, the acknowledgment information corresponding to the PDSCH without the PDCCH is the second acknowledgment information NACK; according to the mapping method of Table 7, the acknowledgment information corresponding to the primary cell group is ACK, NACK, NACK, wherein, the third The two acknowledgment information corresponding to the PDSCH on the downlink subframes is NACK through spatial logic and operation, and the corresponding information of N information mapped by the primary cell group is 01.
  • the UE receives the first subframe, the third subframe, and the PDSCH of the fourth subframe on the secondary cell, and the corresponding acknowledgement information is ACK, (ACK, NACK), NACK, according to the received DAI value of 1, 3, 4, it can be seen that the PDSCH of the second subframe is lost; then, the acknowledgement information corresponding to the second subframe is NACK; according to the mapping method of Table 7, the acknowledgement information corresponding to the secondary cell group is ACK, NACK, NACK, NACK, NACK, The two acknowledgment information corresponding to the PDSCH in the third downlink subframe is NACK by the spatial logic and operation result, and the corresponding information of the N information mapped by the secondary cell group is 01.
  • the UE receives the first subframe, the third subframe, and the PDSCH of the fourth subframe on the secondary cell, and the corresponding acknowledgement information is ACK, (ACK, NACK), NACK, according to the received DAI value of 1, 3, 4, it can be seen that the PDSCH of the second subframe is lost (corresponding to PDCCH loss); then, the acknowledgment information corresponding to the second subframe is NACK; according to the mapping method of Table 8, the PDCCH is lost in the secondary cell group, and the secondary cell
  • the N pieces of information mapped by the group are NACK, and the corresponding bit is 00.
  • the information sent by the UE is 1, 1 , 0, 0; the information is sent by channel selection. It should be noted that 0 can also be regarded as NACK, and 1 can also be regarded as ACK. Then, the information sent by the UE is ACK, ACK, NACK, NACK; the information is transmitted by channel selection; (0 can also be regarded as ACK , 1 can also be regarded as NACK)
  • the UE receives the PDSCH of the first subframe and the third subframe on the primary cell, and the corresponding acknowledgement information is ACK, (ACK, ACK). According to the received DAI value 1, 2, no PDSCH loss can be obtained. According to the mapping method of Table 7, the acknowledgment information corresponding to the primary cell group is ACK, (ACK, ACK), and logically AND operation is performed on all acknowledgment information in the group, and the result is ACK, and the N information mapped by the primary cell group is ACK, and The last DAI value 2 received by the UE in the primary cell group is fed back, and the corresponding bit is 10.
  • the UE receives the first subframe, the third subframe, and the PDSCH of the fourth subframe on the secondary cell, and the corresponding acknowledgement information is ACK, (ACK, NACK), NACK, according to the received DAI value of 1, 3, 4, It can be seen that the PDSCH of the second subframe is lost (corresponding to PDCCH loss); then, the acknowledgement information corresponding to the second subframe is NACK. According to the mapping method of Table 9, the PDCCH is lost in the secondary cell group, and the N information mapped by the secondary cell group is NACK, and the corresponding bit is 00.
  • the information sent by the UE is 1, 0, 0, 0; the information is sent by channel selection. It should be noted that 0 can also be regarded as NACK, and 1 can also be regarded as ACK. Then, the information sent by the UE is ACK, NACK, NACK, NACK; the information is transmitted by channel selection; (0 can also be regarded as ACK 1 can also be regarded as NACK.
  • the two PUCCHs of the corresponding group of the primary cell the DCE equal to 1 in the corresponding group of the primary cell, the CCE location mapping of the control channel element corresponding to the PDCCH, and the control of the PDCCH corresponding to the DAI equal to 2
  • the channel element CCE location mapping is obtained, wherein when the primary cell corresponding group includes only one acknowledgment information with a DAI equal to 1, the PUCCH resource is a PUCCH resource with a DAI equal to 1 corresponding to the control channel element CCE location mapping of the PDCCH and the high layer configured PUCCH resource.
  • the PUCCH resource is a PUCCH resource configured by the upper layer;
  • the two PUCCHs of the secondary cell corresponding group are obtained according to the high-level configured PUCCH resource and the ACK/NACK resource indication signaling ARI, or the two PUCCHs of the secondary cell corresponding group are obtained according to the high-level configured PUCCH resource.
  • FIG. 9 is a structural block diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 9, the terminal includes: a dividing module 92, a mapping module 94, and a feedback module 96. Detailed instructions are given.
  • the dividing module 92 is configured to divide the acknowledgement information of the physical downlink shared channel PDSCH corresponding to one uplink subframe into a predetermined value M groups; the mapping module 94 is connected to the dividing module 92, and is configured to divide the module 92 according to the downlink allocation information DAI.
  • the acknowledgment information corresponding to each of the divided predetermined values M groups is respectively mapped to a predetermined number of feedback information, wherein the acknowledgment information includes an acknowledgment message (ACK) or a non-acknowledgement message (NACK);
  • the feedback module 96 is connected to the mapping module 94.
  • the feedback information mapped by the mapping module 94 is set to be fed back on the uplink subframe.
  • the dividing module 92 is configured to confirm the corresponding downlink subframe i corresponding to the uplink subframe.
  • the Hi group is divided into the Hi group, and the Hi group corresponding to the predetermined group M and the downlink subframe i satisfies the following relationship: where P is the number of downlink subframes corresponding to the uplink subframe.
  • the dividing module 92 includes: a first dividing submodule, configured to divide the confirmation information into a predetermined value M groups according to at least one of the following: when P is 1 and Q is 3, M is 3, wherein each terminal configuration The acknowledgment information corresponding to the serving cells is a group; when P is 1 and Q is 4, M is 4, where the acknowledgment information corresponding to each serving cell configured by the terminal is a group; when P is 1, Q is 5 When the value is 4, the acknowledgment information corresponding to the two secondary cells in the serving cell configured by the terminal is a group, and the acknowledgment information corresponding to each service 'j and the area in the other serving cells except the secondary cell is one.
  • M is 4, wherein the acknowledgment information corresponding to each downlink subframe corresponding to the uplink subframe is divided into two groups, and the acknowledgment information corresponding to the primary cell in the downlink subframe is One group, the confirmation information corresponding to the secondary cell is another group;
  • M is 4, wherein the acknowledgment information corresponding to one downlink subframe in the downlink subframe corresponding to the uplink subframe is divided into two groups, and the acknowledgment information corresponding to the primary cell in the downlink subframe
  • the acknowledgment information corresponding to the secondary cell is another group, and the acknowledgment information corresponding to each subframe in the remaining downlink subframes is divided into one group;
  • P Q is greater than or equal to 2
  • M is 4, where The acknowledgment information corresponding to each downlink subframe of the PDSCH is divided into one group;
  • P is 3 and Q is greater than or equal to 2
  • M is 3, where the acknowledgment information corresponding to each downlink subframe subframe
  • the terminal further includes: a predetermined dividing module, configured to divide the acknowledgement information of the PDSCH without the physical downlink control channel PDCCH into a predetermined group.
  • the mapping module 94 further includes: a determining submodule and a feedback submodule, wherein: the determining submodule is configured to determine that the PDCCH is lost according to the DAI; and the feedback submodule is connected to the determining submodule, and is configured to determine that the submodule determines that there is a loss, The determining submodule determines that the acknowledgment information corresponding to the group in which the PDCCH is lost is mapped to a non-acknowledgement message (NACK) or a non-persistent state (DTX).
  • NACK non-acknowledgement message
  • DTX non-persistent state
  • the terminal further includes: a message confirmation module and a message mapping module, wherein the message confirmation module determines that the sub-module determines that there is no corresponding confirmation message in the M group of predetermined values; the message mapping module determines that the sub-module confirms that the message confirmation module has no corresponding
  • the acknowledgment message corresponding to the group of acknowledgment messages is mapped to NACK or DTX.
  • the corresponding PDCCH is located in the group corresponding to the acknowledgment message of the primary cell, and the PUCCH resource corresponding to the PDCCH is located according to the location of the control channel element CCE. The map is obtained.
  • the resource is obtained; or the PUCCH resource corresponding to the group corresponding to the PDCCH that is not located in the primary cell is obtained according to the PUCCH resource configured by the upper layer and the ACK/NACK resource indication signaling ARI.
  • the acknowledgment information corresponding to the PDSCH without the PDCCH is the acknowledgment information of the PDSCH without the PDCCH
  • the PUCCH resource corresponding to the group in which the acknowledgment message of the PDSCH without the PDCCH is located is obtained by the PUCCH resource configured by the upper layer and the predefined ACK/NACK resource indication signaling ARI.
  • the dividing module 92 includes: a second dividing sub-module, configured to: when the number of serving cells of the terminal in which the terminal is located is 2, and the number of downlink subframes corresponding to the uplink subframe is greater than K, determining that M is equal to 2, where each The confirmation information corresponding to each serving cell is 1 group, and K is equal to 1 or 2.
  • the mapping module 94 further includes: an information mapping sub-module, connected to the second dividing sub-module, configured to map, according to the DAI, the acknowledgment information corresponding to each of the predetermined values M groups divided by the second dividing sub-module into 2-bit feedback information.
  • the mapping module 94 is further configured to sort the confirmation information according to the value of the DAI corresponding to the confirmation information from small to large, and the confirmation information without the DAI is located in front of the confirmation information having the DAI, wherein the confirmation information is a predetermined value M groups.
  • the confirmation information in each group is mapped to a predetermined number of feedback information, wherein when the PDSCH corresponds to two confirmation information, two
  • the confirmation information is logically and operated and then sorted.
  • the mapping module 94 further includes: a mapping sub-module, configured to respectively map the confirmation information corresponding to each of the predetermined values M groups to a predetermined amount of feedback information according to the DAI in one of the following manners: the terminal sets the predetermined value M The number of ACKs obtained by the acknowledgment information of each group in the group is mapped to a predetermined amount of feedback information, where the spatial logic and operation are when a PDSCH corresponds to two pieces of confirmation information, and the logical AND operation is The two acknowledgment information is mapped into one acknowledgment information; the terminal logically AND operates all acknowledgment information of each of the predetermined groups of M groups to one acknowledgment information (1-bit feedback information), and when the feedback information is ACK The number of PDSCHs received by the feedback terminal in the group; the terminal maps all the acknowledgment information of each of the predetermined groups of M groups to logically and operationally to map the two acknowledgment information into one acknowledgment information, and when feedback When the information is ACK, the feedback terminal receives the count value
  • the order of the two sets of feedback information is the feedback information of the corresponding group of the primary primary cell and the feedback information of the corresponding group of the secondary cell; or the sequence of the feedback information of the two groups is the feedback information of the corresponding group of the primary secondary cell and then the corresponding Group of feedback information.
  • the dividing module 92 is further configured to: when the number of serving cells of the terminal where the terminal is located is 2, and the number of downlink subframes corresponding to the configuration window of the PDSCH is 2, determining that M is equal to 4, where each downlink subframe is The acknowledgment information corresponding to the serving cells is a group; the mapping module 94 is further configured to map, by the DAI, the acknowledgment information corresponding to each of the predetermined values M groups by the DAI to a confirmation information through a logical AND operation.
  • the terminal described in the device embodiment corresponds to the foregoing method embodiment, and the specific implementation process has been described in detail in the method embodiment, and is not described herein.
  • a method and a terminal for confirming information feedback are provided.
  • the acknowledgment information of the PDSCH corresponding to one uplink subframe is divided into a predetermined value M groups by the terminal; and the acknowledgment information corresponding to each group of the predetermined value M groups is respectively mapped to a predetermined amount of feedback information according to the DAI, and then the feedback is The information is fed back on the uplink subframe, which solves the problem that the signaling load is excessively increased or even affects the normal service transmission due to the multiple increase of the feedback acknowledgement information in the carrier aggregation scenario in the related art, thereby improving the feedback efficiency of the acknowledgement information. effect.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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  • Mobile Radio Communication Systems (AREA)

Abstract

Une méthode et un terminal de confirmation de retour d'information sont divulgués dans la présente invention. La méthode se décompose comme suit : un terminal divise les informations de confirmation du canal physique partagé PDSCH qui correspond à une sous-trame montante, en groupes M de valeur prédéterminée; le terminal mappe respectivement, en fonction d'informations d'attribution descendantes (DAI), les informations de confirmation correspondant à chaque groupe des groupes M de valeur prédéterminée, avec des quantités prédéterminées d'informations de retour, les informations de confirmation comprenant un accusé réception (ACK) ou un accusé réception négatif (NACK); le terminal assure le retour dans la sous-trame montante avec les informations de retour. Grâce à l'invention, l'efficacité de confirmation du retour d'information est amélioré.
PCT/CN2011/075961 2010-11-15 2011-06-20 Méthode et terminal de confirmation de retour d'information WO2012065438A1 (fr)

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