WO2012097726A1 - 一种应答信息的编码、处理方法和装置 - Google Patents
一种应答信息的编码、处理方法和装置 Download PDFInfo
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- WO2012097726A1 WO2012097726A1 PCT/CN2012/070488 CN2012070488W WO2012097726A1 WO 2012097726 A1 WO2012097726 A1 WO 2012097726A1 CN 2012070488 W CN2012070488 W CN 2012070488W WO 2012097726 A1 WO2012097726 A1 WO 2012097726A1
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- response information
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- downlink
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- information bits
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
- H04L1/0073—Special arrangements for feedback channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L2001/125—Arrangements for preventing errors in the return channel
Definitions
- the present invention relates to the field of mobile communication technologies, and in particular, to a method and apparatus for encoding and processing response information, including a method and apparatus for encoding response information, and a method and apparatus for processing response information.
- the data receiver needs to feed back the response information to the data sender to help the data sender confirm whether the data is received correctly.
- the Acknowledgement (ACK) is used to indicate that the reception is correct
- the Negative-acknowledgement (NACK) is used to indicate the reception error.
- the response information may also be referred to as ACK/NACK feedback information.
- 3rd Generation Partnership Project 3rd Generation
- E-UTRA Evolved Universal Terrestrial Radio Access
- Uplink Uplink
- UL Uplink
- PUCCH Physical Uplink Control Channel
- LTE Long Term Evolution
- the carrier aggregation technology is selected to support a wider bandwidth to meet the peak data rate requirements of the International Telecommunication Union for the fourth generation communication technology.
- carrier aggregation technology the spectrum of two or more component carriers is aggregated. Put together to get a wider transmission bandwidth.
- the LTE-A user equipment can configure different numbers of uplink and component carriers, and each member carrier has an independent HARQ process.
- PDSCH Physical Downlink Shared Channel
- DCI Downlink Control Information
- TDDD Time Division Duplexing
- component carrier In Time Division Duplexing (TDDD system), only the concept of component carrier, there is no explicit concept of uplink component carrier and downlink component carrier, because both uplink and downlink transmissions occur in the same frequency band. That is, there is an uplink transmission and a downlink transmission on each component carrier, that is, each component carrier serves as both an uplink component carrier and a downlink component carrier.
- the uplink transmission and the downlink transmission are only time-segmentally divided in units of subframes, that is, some The sub-frame is used for downlink transmission, which is called downlink subframe (Downlink subframe), and some subframes are used for uplink transmission, which is called uplink subframe (Uplmk subframe).
- the response information corresponding to the data transmission on the multiple downlink subframes needs to be fed back in the same uplink subframe. That is, the member carrier used for the uplink feedback response information feeds back multiple
- the response information of the downlink subframe on the component carrier includes feedback on each component carrier. Data transmission on a downlink sub-frame corresponding to the acknowledgment information.
- Uplink and downlink subframe configuration For the uplink and downlink subframe configuration in LTE/LTE-ATDD, see Table 1, where 'D' indicates the downlink subframe, 'U' indicates the uplink subframe, and 'S' indicates the special subframe.
- the special subframe is also used for downlink transmission. .
- the user When the response information is fed back, for a certain subframe position of a certain carrier that has no actual data transmission to the user, the user will take several response information bits corresponding to the position to a preset value when feeding back. For example, as long as there is no actual data transmitted to the user's subframe, the value of the corresponding response information bit is taken as '0.
- the data transmission is transmitted by the base station to the user, and the user equipment also needs to consume resources (such as power) to feedback the response information known by the base station and does not need feedback, which may cause waste of the transmission power of the user equipment and performance loss.
- the present invention provides a method and apparatus for encoding and processing response information, which can reduce power waste and performance loss relative to the prior art.
- the embodiment of the present invention provides a method for encoding response information, including the following steps: receiving a component carrier, where the component carrier includes at least one downlink subframe, and generating, according to the received component carrier, the component carrier corresponding Response information bit;
- each group includes at least one response information bit, the at least one response information bit corresponding to a physical downlink shared channel PDSCH transmission, and/or downlink control information DCI, where the DCI is used Instructing the downlink semi-persistent scheduling SPS to terminate; and separately encoding the two sets of response information bits into two sets of codeword bits, and generating two total codeword bits to be transmitted from the separately encoded two codeword bits.
- an embodiment of the present invention further provides a method for processing response information, including the following steps: Receiving, by the transmitting end, the total codeword bits fed back according to the downlink subframe in the component carrier;
- each set of response information bits includes at least one response information bit, and the at least one response information bit corresponds to physical downlink a shared channel PDSCH transmission, and/or downlink control information DCI, wherein the DCI is used to indicate that the downlink semi-persistent scheduling SPS terminates;
- an embodiment of the present invention further provides an apparatus for encoding response information, where the apparatus is located in a user equipment, and includes:
- a response information generating module configured to receive a component carrier, where the component carrier includes at least one downlink subframe, and generate, according to the received component carrier, a response information bit corresponding to the component carrier, and a grouping module, configured to:
- the response information bits generated by the response information generating module are divided into two groups such that each group includes at least one response information bit, and the at least one response information bit corresponds to a physical downlink shared channel PDSCH transmission, and/or downlink control information DCI, where The DCI is used to indicate that the downlink semi-persistent scheduling SPS terminates;
- an encoding module configured to respectively encode two sets of response information bits divided by the grouping module to obtain two sets of codeword bits, and generate two total codeword bits to be transmitted by respectively encoding two sets of codeword bits.
- the embodiment of the present invention further provides a device for processing response information, where the device is located at a base station, and includes:
- a receiving module configured to receive a total codeword bit that is sent back by the transmitting end according to the downlink subframe in the component carrier; and a decoding module, configured to decode the received total codeword bit according to the set decoding manner, to obtain two sets of response information a bit, where each set of response information bits includes at least one response information bit, the at least one response information bit corresponding to a physical downlink shared channel PDSCH transmission, and/or downlink control information DCI, wherein the DCI is used to indicate downlink half-continuation Scheduling SPS termination; mapping module, configured to map two sets of response information bits obtained by the decoding module to the downlink subframe Feedback information bits are obtained, and response information of the downlink subframe is obtained.
- the present invention further provides a method for encoding response information, including the steps of: receiving at least one component carrier, each component carrier of the at least one component carrier including at least one downlink subframe;
- the value of the downlink allocation indication DAI field having the largest value among the downlink control information DCI received on each of the component carriers for controlling the physical downlink shared channel (PDSCH) transmission and/or indicating the downlink semi-persistent scheduling SPS termination Decoding the response information bits corresponding to each of the component carriers by using the number N_sps of the physical downlink shared channel PDSCH of the semi-persistent scheduling SPS in the at least one downlink subframe;
- the two sets of response information bits are respectively encoded to obtain two sets of codeword bits, and the total codeword bits to be transmitted are generated according to the two sets of codeword bits respectively obtained by coding.
- the present invention further provides a method for processing response information, including the following steps: receiving, by a receiving end, a total codeword bit fed back by a transmitting end;
- the total codeword bit is obtained by the transmitting end to separately encode two sets of response information bits to obtain two sets of codeword bits, and are generated by separately encoding two sets of codeword bits;
- the two sets of response information bits are: the transmitting end receives at least one component carrier, and generates a response information bit corresponding to each component carrier of the at least one component carrier; according to each component carrier Obtaining a value DAI_max of a downlink allocation indication DAI field, which is obtained by controlling the physical downlink shared channel PDSCH transmission and/or indicating the downlink semi-persistent scheduling SPS termination, and the maximum value of the downlink allocation indication DAI field, and each of the component carriers The number of physical downlink shared channel PDSCHs that are semi-persistently scheduled by the SPS in at least one downlink subframe, N_sps, Sorting the response information bits corresponding to each component carrier; and sequentially assigning the response information bits corresponding to each of the component carriers to the two groups;
- the receiving end decodes the received total codeword bits according to the set decoding mode, and obtains the two sets of response information bits;
- the receiving end maps the two sets of response information bits to the feedback information bits of the at least one downlink subframe to obtain response information of the at least one downlink subframe.
- the present invention provides an apparatus for encoding response information, including:
- a response information generating module configured to receive at least one component carrier, each of the at least one component carrier includes at least one downlink subframe, and generate, according to each component carrier, a response corresponding to each component carrier Information bit
- a grouping module configured to perform a downlink allocation with the largest value according to the downlink control information DCI received on each of the component carriers for controlling physical downlink shared channel (PDSCH) transmission and/or indicating downlink half-persistent scheduling SPS termination And indicating a value DAI_max of the DAI field, and sorting the response information bits corresponding to each of the component carriers by using the number N_sps of the physical downlink shared channel PDSCH of the semi-persistent scheduling SPS in the at least one downlink subframe; The sorted response information bits corresponding to each of the component carriers are alternately allocated to the two groups to obtain two sets of response information bits;
- PDSCH physical downlink shared channel
- an encoding module configured to separately encode the two sets of response information bits to obtain two sets of codeword bits, and generate total codeword bits to be transmitted according to the two sets of codeword bits respectively obtained by encoding.
- the present invention provides an apparatus for processing response information, including: a receiving module, configured to receive a total codeword bit fed back by a transmitting end;
- the total codeword bit is obtained by the transmitting end to separately encode two sets of response information bits to obtain two sets of codeword bits, and are generated by separately encoding two sets of codeword bits;
- the two sets of response information bits are: the transmitting end receives at least one component carrier, and generates a response information bit corresponding to each component carrier of the at least one component carrier; And the value DAI_max of the downlink allocation indication DAI field obtained by the downlink control information DCI for controlling the physical downlink shared channel (PDSCH) transmission and/or the downlink semi-persistent scheduling SPS termination is obtained on each of the component carriers, Sorting the response information bits corresponding to each of the component carriers by using the number N_sps of the physical downlink shared channel PDSCH of the semi-persistent scheduling SPS in at least one downlink subframe of each of the component carriers; The response information bits corresponding to each component carrier are alternately allocated to the two groups;
- a decoding module configured to decode the received total codeword bits according to the set decoding manner to obtain the two sets of response information bits
- a mapping module configured to map the two sets of response information bits to the The feedback information bits of the at least one downlink subframe obtain the response information of the at least one downlink subframe.
- the response information bits are divided into two groups, so that each group includes at least one response information bit corresponding to the actually scheduled subframe; and the two sets of response information bits are encoded and combined to obtain a final
- the codeword bits of the response information are carried, so that the response information corresponding to those subframes that are actually scheduled is allocated as evenly as possible to the codeword bits of the response information, thereby avoiding performance loss.
- Embodiment 1 is a flowchart of processing feedback response information according to Embodiment 1 of the present invention.
- FIG. 2 is a flowchart of processing feedback response information according to Embodiment 2 of the present invention.
- FIG. 3a is a flowchart of processing feedback response information according to Embodiment 3 of the present invention.
- FIG. 3b is a specific flow chart of generating response information bits on a carrier in the third embodiment of the present invention.
- FIG. 4 is a flowchart of processing for receiving response information by a base station according to Embodiment 4 of the present invention
- FIG. 5 is a coding apparatus for response information according to an embodiment of the present invention
- FIG. 6 is a diagram of an apparatus for processing response information according to Embodiment 4 of the present invention. detailed description
- the key to the technical solution of the present invention is that the response information bits corresponding to the respective downlink subframes on the respective component carriers to be transmitted are reasonably sorted, so that the response information bits corresponding to those subframes with actual data transmission are allocated as evenly as possible. In both groups of double RM codes, performance loss is avoided.
- a problem to be solved is: the response information bits corresponding to the data transmission of each downlink subframe on each component carrier to be transmitted.
- a clear ordering sequence is required between the base stations, so that the base station can know which acknowledgment information bits correspond to which downlink subframes on which component carrier, and then which of the component carriers are known.
- the data of the downlink subframe is received correctly and which ones are not received correctly.
- An embodiment of the present invention provides a method for encoding response information, including the following steps: Step 11: Receive a component carrier, where the component carrier includes at least one downlink subframe, and generate the member according to the received component carrier. The response information bit corresponding to the carrier;
- Step 12 Divide the response information bits into two groups, such that each group includes at least one response information bit, the at least one response information bit corresponding to a physical downlink shared channel PDSCH transmission, and/or downlink control information DCI, where The DCI is used to indicate that the downlink semi-persistent scheduling SPS terminates;
- Step 13 separately encoding the two sets of response information bits into two sets of codeword bits, and generating two total codeword bits to be transmitted from the two sets of codeword bits respectively obtained by encoding.
- the method before the generating the response information bit of the downlink component carrier, the method further includes: determining the number of downlink subframes D that need to generate the response information bit. Determining the number of downlink subframes D that need to generate the response information bits, including: determining, according to the number of downlink subframes associated with the hybrid automatic repeat request HARQ timing, the number of downlink subframes D; or controlling physical uplink according to the control
- the downlink allocation indication DAI field in the downlink control information DCI of the shared channel PUSCH transmission takes a value to determine the number of downlink subframes D.
- the generating the response information bit of the component carrier according to the received component carrier includes: a maximum number of codewords that can be supported according to the component carrier, and whether a binding is used between the codewords.
- the method determines the number of bits of the response information bit corresponding to each of the downlink subframes.
- Step 12 may specifically include:
- a value DAI_max according to the received DAI field for controlling PDSCH transmission and/or for indicating downlink SPS termination, and a physical downlink shared channel for semi-persistent scheduling SPS in the downlink subframe
- N_sps The number of PDSCHs N_sps, the response information bits are sorted; the sorted response information bits are alternately allocated to the two groups.
- the determining, by the DAI_max and the N_sps, the response information bits including:
- the remaining (DX a-(DAI_max+N_sps) xa ) response information bits are set to '0'.
- the alternately allocating the sorted response information bits to the two groups includes: Sorting the sorted response information bits into the D subgroups on average;
- First allocation mode assigning a subgroup with an odd number of subgroups to a first group of the two groups, and assigning a subgroup with an even number of subgroups to a second group of the two groups;
- the second allocation mode is: assigning a subgroup having an even number of subgroups to the first group of the two groups, and assigning a subgroup having an odd number of subgroups to the second group of the two groups.
- the sorted response information corresponding to each component carrier alternately uses the first allocation mode and the second allocation mode according to the set component carrier arrangement order.
- the determining the number of the downlink subframes D to generate the response information bits further includes: if the determined number of actual downlink subframes is an odd number, adding the number of the actual downlink subframes to the The number of downlink subframes D.
- the alternately allocating the sorted response information bits to the two groups includes: assigning the last two response information bits of the sorted response information bits corresponding to each of the component carriers b to the two groups; Or,
- the last two response information bits of the response information bits of the last member wave b in the component carrier are respectively allocated to the two groups, wherein the component carriers are arranged in the set order.
- step 12 specifically includes:
- the response information bits corresponding to the corresponding downlink subframe when the DAI field value in the received DCI is an odd number The first group of the two groups allocates response information bits corresponding to the corresponding downlink subframes when the DAI field is even to the second group of the two groups.
- the above method may be implemented by a receiver of a component carrier, such as a terminal.
- An embodiment of the present invention corresponds to the foregoing method for encoding response information, and correspondingly provides a method for processing response information, including the following steps:
- Step 21 Receive a total codeword bit that is sent back by the transmitting end according to the downlink subframe in the component carrier.
- Step 22 Decode the received total codeword bit according to the set decoding mode, and obtain two sets of response information bits, where Each set of response information bits includes at least one response information bit, the at least one response information bit corresponding to a physical downlink shared channel PDSCH transmission, and/or downlink control information DCI, wherein the DCI is used to indicate that the downlink semi-persistent scheduling SPS terminates;
- Step 23 Mapping the two sets of response information bits to the feedback information bits of the downlink subframe to obtain response information of the downlink subframe.
- the feedback information bits of the downlink subframe after mapping are:
- the N-sps X a bit positions store the response information bits corresponding to the N_sps PDSCHs;
- the N-sps is the number of physical downlink shared channel PDSCHs that are semi-persistently scheduled in the downlink subframe, and the DCI is used to control PDSCH transmission and/or to indicate downlink SPS termination, and the downlink allocation indication
- the DAI field is located in the DCI, where a is the number of bits of the response information bit corresponding to each of the downlink subframes.
- the processing flow of the feedback response information in the first embodiment of the present invention is as shown in FIG. 1 and includes the following steps:
- Step 101 Determine the number of downlink subframes D that need to generate the response information bits.
- the number of downlink subframes corresponding to the feedback response information of the uplink subframe may be according to Table 4
- Each uplink subframe needs to be determined by the number of downlink subframes corresponding to the feedback response information.
- the uplink and downlink subframe ratios multiple downlink subframes need to feed back corresponding response information through the same uplink subframe, where the multiple downlink subframes constitute an associated downlink subframe set, and Each downlink subframe in the associated downlink subframe set is referred to as an associated downlink subframe of the uplink subframe.
- the number of subframes in the associated downlink subframe set is M.
- the value of M may be 1, 2, 3, 4, or 9.
- M corresponding to the LTE/LTE-A uplink and downlink subframe configuration in Table 1 is as follows:
- the subframe with the number in the cell must be the uplink subframe (depending on the comparison table 1), and for the uplink subframe without the number, it can be considered as It is not necessary to feed back the response information of any downlink subframe.
- the number of the number of the downlink subframes that need the feedback information of the uplink subframe that is, the value of the M.
- the value of the digit indicates that the downlink subframe that needs feedback of the uplink subframe is the uplink subframe.
- the value 6 of the subframe 2 in the configuration 0 indicates the subframe 6 in the last 10 milliseconds (the length of one subframe is 1 millisecond, and the last 10 milliseconds is the last 10 subframes), from the table. 1 know that the subframe 6 is a special subframe for downlink transmission. Conversely, the downlink data transmission of the current subframe 6 needs to wait for the next 10 millisecond uplink subframe 2 after 6 subframes to feed back the corresponding response. information.
- the uplink subframe needs feedback. All of the response information of all the next subframes associated with the uplink subframe HARQ timing relationship.
- the uplink and downlink subframe configurations of the component carriers of the TDD system are the same.
- the maximum number of codewords that can be transmitted on the physical downlink shared channel PDSCH transmission configured by each carrier may be different.
- the maximum number of codewords that can be transmitted by some carriers is 1, and the maximum number of codewords that some carriers can transmit. Is 2.
- the maximum number of codewords that can be transmitted by PDSCH transmission is
- the 1 bit value T indicates that the physical downlink shared channel PDSCH transmission on the downlink subframe is correctly received or the downlink control information DCI indicating that the downlink semi-persistent scheduling SPS terminates is received correctly, and the value '0' indicates the downlink subframe.
- the physical downlink shared channel PDSCH transmission receives an error, or does not receive the physical downlink shared channel PDSCH transmission on the downlink subframe and/or the downlink control information DCI indicating the downlink semi-persistent scheduling SPS termination.
- the maximum number of codewords that can be transmitted by PDSCH transmission is
- each codeword of each downlink subframe on the carrier needs 1 bit feedback, and a total of 2 response information bits d (0) are required. ), d(l).
- the value of 1 bit T indicates that the physical downlink shared channel PDSCH transmission on the downlink subframe is correctly received, and the value is '0, indicating that the physical downlink shared channel PDSCH on the downlink subframe transmits one of the code words. Receives an error or does not receive a data transfer of one of the codewords, or reverses the value.
- the other bit T represents the physical downlink shared channel PDSCH transmission on the downlink subframe, and the other codeword is received correctly.
- the value '0' indicates that the physical downlink shared channel PDSCH transmission on the downlink subframe is received by another codeword. Error or no data transfer of another codeword received, or value inversion. For example, d(0) corresponds to the first codeword response information, and d(1) corresponds to the second codeword response information.
- a carrier configured with a physical downlink shared channel PDSCH transmission can support transmission of a maximum of two codewords, in practice, sometimes only one codeword may be transmitted on a certain subframe, for example, the subframe is used for downlink semi-persistent scheduling SPS.
- This codeword is fixed with d(0) or d(l) for feedback. Its response information.
- Another codeword is considered to be unreceived, and the corresponding other bit d(l) or d(0) takes a value of '0'.
- the two bits d(0), d(l) take values of '0, respectively.
- each downlink subframe on the carrier only needs feedback binding.
- One response information bit d(0) For example, the value of the 1 bit T indicates that all the actually transmitted codewords on the downlink subframe are received correctly. Specifically, if a codeword is actually transmitted (including one codeword in the PDSCH or only the downlink semi-persistent scheduling SPS is terminated) DCI), that is, this code word is received correctly; if two code words are actually transmitted, then both code words are received correctly.
- the 1 bit takes a value of '0', indicating that at least one of the actually transmitted codewords in the downlink subframe is actually received or the two codewords are not received. It should be noted that, for a user, only one PDSCH transmission can be received on each downlink subframe or only one DCI indicating downlink SPS termination can be received.
- the response information is actually feedback on the PDSCH transmission received on the downlink subframe or the reception status of the DCI indicating the downlink SPS termination;
- the response information is described as a downlink.
- the response information corresponding to the frame.
- the PDSCH transmission or the response information corresponding to the DCI indicating the termination of the downlink SPS is sometimes emphasized.
- Step 102 Receive a component carrier, where the component carrier includes at least one downlink subframe, and generate response information bits corresponding to the component carrier according to the received component carrier.
- each of the downlink control information (DAI) values of the downlink control information DCI transmitted by the control physical downlink shared channel (PDSCH) received by the user on each component carrier may be arranged according to the value of the Downlink Assignment Index (DAI) field.
- DAI Downlink Assignment Index
- the physical downlink control channel Physical Downlink Control Channel
- the downlink control information DCI is transmitted by the base station to the UE on the PDCCH.
- the DCI has the following three application scenarios: First, the DCI is used to indicate the termination of the Semi-persistent Scheduling (SPS);
- the DCI is used to control dynamic physical downlink shared channel PDSCH transmission.
- the DCI is used to control the dynamic physical uplink shared channel (Physical Uplmk) Shared Channel, PUSCH) transmission.
- the corresponding DCI must be in the same downlink subframe as the PDSCH, and the corresponding PDSCH cannot be received without receiving the DCI.
- the PUSCH transmission for non-SPS mode scheduling may or may not be DCI.
- a DAI command field configured to indicate, in the associated downlink subframe set, the cumulative number of DCIs corresponding to uplink/downlink PDSCH transmission or downlink SPS termination in the associated subframe allocated (or transmitted) to the user equipment to the current associated downlink subframe
- the DCI is a DCI for indicating PDSCH transmission or downlink SPS termination.
- the user is configured with two component carriers, and each carrier is 4 downlink subframes and needs to be fed back in one uplink subframe, for example, uplink subframe 2 of the uplink and downlink subframe configuration 2 in Table 4.
- uplink subframe 2 of the uplink and downlink subframe configuration 2 in Table 4.
- Table 5 The maximum DAI received by the user on the carrier 1 is 3, and the maximum DAI received on the carrier 2 is 2.
- the response of the carrier 1 and the carrier 2 after the previous arrangement is sorted in the case 1
- the information bits are shown in Table 6:
- the user is configured with two component carriers, and each carrier is 4 downlink subframes and needs to be fed back in one uplink subframe.
- the uplink subframe 2 of the uplink and downlink subframe configuration 2 in Table 4 the child on the carrier 1 Frame 2 is configured for SPS scheduled PDSCH transmission and does not have a corresponding DCI. Supporting the current time
- the scheduling situation on the base station side is shown in Table 7:
- Table 7 The maximum DAI received by the user on the carrier 1 is 3, and the maximum DAI received on the carrier 2 is 2, then the carrier 1 and carrier 2 are sorted according to the first arrangement in Case 2.
- the response information bits are as shown in Table 8: Carrier 2 bits (1, 2) 2 bits (3, 4) 2 bits (5, 6) 2 bits (7, 8) Position
- a message Table 8 Step 103 The response information bits are divided into two groups such that each group includes at least one response information bit, the at least one response information bit corresponding to a physical downlink shared channel PDSCH transmission, and/or downlink control information DCI, The DCI is used to indicate that the downlink semi-persistent scheduling SPS terminates.
- One of the double RM codes dual RM code is code block a, [a(0), a(l), a(2) ... ]
- the other group is code block b, [b(0), b(l), b(2)...].
- the response information bits are sorted and then alternately assigned to two code blocks as shown in Table 9 or Table 10:
- Table 10 shows that if at least two downlink subframes on a component carrier have actual data transmission, that is, at least two DCIs are sent in the associated subframe, then the above two methods are assigned to the dual RM code (Table 9 and Any of the table 10) can ensure that each code block of the dual RM code has an acknowledgement information bit of the actual data transmission; even if only one downlink subframe per carrier has actual data transmission, the allocation is as shown in Table 10. The method to dual RM code also ensures that each code block has an acknowledgement information bit for the actual data transmission.
- the response information '0' or '0, 0' is not the same as the response information '0' or '0, 0' of the subframe in which the base station does not actually transmit data.
- the former base station does not know. It must be 0, or '0, 0', and the latter base station knows that it must be 0, or '0, 0, .
- each allocated object is 1 bit.
- One of the double RM codes dual RM code is code block a, [a(0), a(l), a(2)...], another group For code block b, [b(0), b(l), b(2)...].
- the response information bits are sorted and alternately assigned to two code blocks as shown in Table XI or Table X2:
- Table X2 One of the double RM codes dual RM code is code block a, [a(0), a(l), a(2) ... ], and the other group is code block b, [b(0 ), b(l), b(2)...].
- Table 12 shows that if at least two downlink subframes on a component carrier have actual data transmission, that is, the sum of the number of DCIs transmitted in the associated subframe and the number of PDSCHs scheduled by the SPS is at least 2, then the above two Any one of the methods (Table 11 and Table 12) assigned to the dual RM code can ensure that each code block of the dual RM code has an acknowledgement information bit of the actual data transmission; even if each carrier has only one downlink subframe The actual data transmission, as shown in Table 12, is also assigned to the dual RM code. It can be ensured that each code block has an acknowledgement information bit for actual data transmission.
- Step 104 The two sets of response information bits are separately encoded to obtain two sets of codeword bits, and two sets of codeword bits respectively obtained by the coding are generated for transmission. Total codeword bits.
- the uplink response information is transmitted on the PUCCH by using the transport format 3 (format 3).
- the format is to transmit 48 codeword bits, that is, the response information bits to be transmitted need to be 48 codeword bits by some coding method, and then can be transmitted in the format 3 format.
- the specific coding method in the TDD system is as follows:
- the LTE release 8 32, 0
- RM eed-Muller
- the bit sequence of the response information to be transmitted is first divided into two groups. Specifically, if the number of bits of the response information to be transmitted is even, the number of bits in the two groups is equal; if it is an odd number, One group is one more bit than the other group. Then each group uses the LTE release 8 (32, 0) RM code to encode 32 bits, and then the last 8 bits are removed to get 24 codeword bits, so that the two groups get a total of 48 codeword bits.
- This encoding method is hereinafter referred to as dual RM code (coding).
- Step 105 Perform scrambling, modulating, mapping, and finally transmitting the codeword bits obtained after encoding.
- PUCCH format3 can be used for sending, and scrambling, modulating, mapping, etc. can be operated according to the corresponding requirements of format 3, and will not be described in detail herein.
- the processing flow of the feedback response information proposed in the second embodiment of the present invention is as shown in FIG. 2, and includes the following steps: The number of downlink subframes D of the feedback response information.
- the DCI In the LTE/LTE-A system, if the response information is fed back on the PUSCH, as mentioned above, there may or may not be a corresponding DCI. If the user does not receive the DCI that controls the PUSCH transmission, the number of downlink subframes D in which the uplink subframe needs feedback response information is still determined by the HARQ timing relationship in the first embodiment. If the user receives a DCI that controls PUSCH transmission, the DCI also has a DAI field. In the LTE ZLTE-A single-carrier system (that is, there is only one component carrier), the DAI field is used to indicate how many control PDSCHs are transmitted in the downlink subframe and/or the DCI indicating the end of the SPS termination in the associated downlink subframe.
- the difference between the DCI that controls the PUSCH transmission and the DAI field that controls the PDSCH and/or the DCI that indicates the downlink SPS termination is that the role of the DAI field in the DCI that controls the PDSCH and/or the downlink SPS termination is a counter, and the PUSCH is controlled.
- the DAI field in the transmitted DCI represents the total number of digits.
- the DAI field in the DCI for controlling PUSCH transmission is used to indicate the maximum number of PDSCH transmissions in the associated downlink subframes on the respective carriers and/or the total number of DCIs indicating the downlink SPS termination.
- the DAI field (if any) in the DCI for controlling PUSCH transmission on all carriers is used to indicate the PDSCH transmission in the associated downlink subframe on each carrier and/or the total DCI indicating the downlink SPS termination.
- the maximum value of the number that is, the same value.
- the value of the DAI field in the DCI corresponding to the PUSCH transmission is controlled accordingly.
- the maximum value between the two is 4.
- the number of downlink subframes in which the uplink subframe needs feedback response information may be determined according to the value of the DAI field in the DCI that controls the PUSCH transmission.
- Step 202 Arrange each member according to the value of the Downlink Assignment Index (DAI) field, which is the largest value in the downlink control information DCI of the control physical downlink shared channel PDSCH received by the user on each component carrier. The response information bit to be fed back by the carrier.
- DAI Downlink Assignment Index
- the Physical Downlink Control Channel Physical Downlink Control Channel
- the downlink control information DCI is transmitted by the base station to the UE on the PDCCH.
- the DCI has the following three application scenarios: First, the DCI is used to indicate the termination of the Semi-persistent Scheduling (SPS);
- the DCI is used to control dynamic physical downlink shared channel PDSCH transmission.
- the DCI is used to control the dynamic physical uplink shared channel (Physical Uplink)
- the corresponding DCI must be in the same downlink subframe as the PDSCH, and the corresponding PDSCH cannot be received without receiving the DCI.
- the PUSCH transmission for non-SPS mode scheduling may or may not be DCI.
- a DAI command field configured to indicate, in the associated downlink subframe set, the cumulative number of DCIs corresponding to uplink/downlink PDSCH transmission or downlink SPS termination in the associated subframe allocated (or transmitted) to the user equipment to the current associated downlink subframe
- the DCI is a DCI for indicating PDSCH transmission or downlink SPS termination.
- the total value is '0.
- the user is configured with two component carriers, and each carrier is 4 downlink subframes that need to be fed back in one uplink subframe, for example, uplink subframe 2 of the uplink and downlink subframe configuration 2 in Table 4.
- the scheduling situation on the base station side at the current moment is as shown in Table 14, and the base station transmits at least one DCI that controls PUSCH transmission.
- the DAI takes the value of 3 and the maximum value of 3.
- the response information bits of carrier 1 and carrier 2 are as shown in Table 15:
- the arrangement is that the first 1 X bit arrangement of the DX a response information bits on the carrier corresponds to the PDSCH transmission of the SPS scheduling without the DCI indication.
- the user is configured with two component carriers, and each carrier is 4 downlink subframes and needs to be fed back in one uplink subframe, for example, uplink subframe 2 of the uplink and downlink subframe configuration 2 in Table 4.
- the scheduling situation of the base station side at the current moment is as shown in Table 16, and the base station transmits at least one DCI that controls PUSCH transmission.
- the DAI takes a value of 4 and a maximum of 4 in 2.
- Table 17 Step 203 The response information bits on each component carrier are alternately allocated in order to the two groups of the dual RM code dual RM code.
- One of the double RM codes dual RM code is code block a, [a(0), a(l), a(2) ... ], and the other group is code block b, [b(0), b(l), b(2)...].
- Table 19 shows that if at least two downlink subframes on a component carrier have actual data transmission, that is, the total number of DCIs sent in the associated subframe is at least 2, then the above two methods are assigned to the dual RM code ( Any of Table 18 and Table 19) can ensure that each code block of the dual RM code has an acknowledgement information bit of the actual data transmission; even if only one downlink subframe per carrier has actual data transmission, according to Table 19
- the method of assigning to the dual RM code can also ensure that each code block has an acknowledgement information bit of the actual data transmission, and when the number of subframes D is an odd number, the number of the two code block bits is more arranged according to Table 19. Evenly.
- the response information '0' or '0, 0' is not the same as the response information '0' or '0, 0' of the subframe in which the base station does not actually transmit data.
- the former base station does not know. It must be 0' or '0, 0, and the latter base station knows that it must be 0, or '0, 0,.
- One of the double RM codes dual RM code is code block a, [a(0), a(l), a(2) ... ], and the other group is code block b, [b(0), b(l), b(2)...].
- the response information bits are sorted and then alternately assigned to two code blocks as shown in Table 20 or Table 21:
- a message Alternately assign a(4), a(5) b(4), b(5) a(6), a(7) b(6), b(7)
- Carrier ⁇ 2 bits (1, 2 bits (3, 2 bits (5, 2 bits (7, sub-frame 2) 4) 6) 8)
- Table 21 shows that if at least two downlink subframes on a component carrier have actual data transmission, that is, the sum of the number of DCIs transmitted in the associated subframe and the number of PDSCHs scheduled by the SPS is at least 2, then the above two Any one of the methods (Table 11 and Table 12) assigned to the dual RM code can ensure that each code block of the dual RM code has an acknowledgement information bit of the actual data transmission; even if each carrier has only one downlink subframe
- the actual data transmission according to the method assigned to the dual RM code shown in Table 12, can also ensure that each code block has the response information bits of the actual data transmission.
- Step 204 Encode the bits in each code block of the dual RM code separately, and rate match.
- Step 205 Perform scrambling, modulating, mapping, and finally transmitting the codeword bits obtained after encoding.
- the PUCCH format 3 can be used for sending, and operations such as scrambling, modulating, and mapping can be performed according to the corresponding requirements of the format 3, which will not be described in detail herein.
- Step 301 Generate a component carrier according to the number of downlink subframes and downlink data received by the uplink subframe feedback response information. Answer information bits.
- the determining the number of downlink subframes D corresponding to the uplink subframe feedback response information may be determined by the method in the first embodiment according to the HARQ timing relationship in the uplink and downlink configuration table 4, or by the number of associated downlink subframes.
- the method in the second embodiment is determined according to the value of the DAI field in the DCI for controlling the PUSCH transmission, and the number of the downlink subframes D may be determined in other manners, for example, directly configuring the information, which is not limited by the present invention. .
- the generating the response information bit includes: determining the response information bit according to a reception condition of the component carrier and whether a binding manner is adopted between the code words. specifically,
- the maximum number of codewords that can be transmitted by PDSCH transmission is
- each downlink subframe on the carrier needs feedback information feedback, one response information bit is fed back.
- the 1 bit value T indicates that the physical downlink shared channel PDSCH transmission on the downlink subframe is correctly received or the downlink control information DCI indicating that the downlink semi-persistent scheduling SPS terminates is received correctly, and the value '0' indicates the downlink subframe.
- Physical downlink shared channel PDSCH transmission reception error, or no physical downlink shared channel PDSCH transmission and/or downlink indication is not received on the downlink subframe
- the downlink control information DCI terminated by the SPS is semi-continuously scheduled.
- each downlink subframe on the carrier Each codeword requires 1 bit of feedback, and a total of 2 response information bits d(0), d ⁇ ; i) are required.
- the value of 1 bit T indicates that the physical downlink shared channel PDSCH transmission on the downlink subframe is correctly received, and the value is '0, indicating that the physical downlink shared channel PDSCH on the downlink subframe transmits one of the code words. Receives an error or does not receive a data transfer of one of the codewords, or reverses the value.
- the other bit T represents the physical downlink shared channel PDSCH transmission on the downlink subframe, and the other codeword is received correctly.
- the value '0' indicates that the physical downlink shared channel PDSCH transmission on the downlink subframe is received by another codeword. Error or no data transfer of another codeword received, or value inversion. For example, d(0) corresponds to the first codeword response information, and d(1) corresponds to the second codeword response information.
- a carrier configured with a physical downlink shared channel PDSCH transmission can support transmission of a maximum of two codewords, in practice, sometimes only one codeword may be transmitted on a certain subframe, for example, the subframe is used for downlink semi-persistent scheduling SPS.
- This codeword is fixed with d(0) or d(l). Its response information.
- Another codeword is considered to be unreceived, and the corresponding other bit d(l) or d(0) takes a value of '0.
- the two bits d(0), d(l) take values of '0', respectively.
- each downlink subframe on the carrier only needs feedback binding.
- One response information bit d(0) For example, the value of the 1 bit T indicates that all the actually transmitted codewords on the downlink subframe are received correctly. Specifically, if a codeword is actually transmitted (including one codeword in the PDSCH or only the downlink semi-persistent scheduling SPS is terminated) DCI), that is This code word is received correctly; if two code words are actually transmitted, then both code words are received correctly.
- the 1 bit takes a value of '0', indicating that at least one of the actually transmitted codewords in the downlink subframe is actually received or the two codewords are not received.
- Step 302 The response information bits are divided into two groups such that each group includes at least one response information bit corresponding to the actually scheduled subframe.
- Step 302 - 1 Pre-N_sps X a bit position arrangement N-sps response information bits corresponding to SPS subframes.
- N—sps 0 or 1.
- the order between the SPS subframes can be placed in a preset order, for example, the preset order is in the order of the SPS subframes. Because the number and location of SPS subframes are pre-configured, not dynamic, and both the base station and the user are clear, the data scheduled by the SPS mode will not be missed.
- Steps 302 - 3 The remaining (D X a-(DAI_max+N_sps) x a ) response information bits are all taken as '0'. Because the remaining response information bits are all corresponding to the subframes that the actual base station does not schedule, or the base station schedules but the user does not receive (missed).
- Steps 302 - 4 The sequenced response information is alternately allocated to two groups in a sub-frame, that is, the granularity of each allocation is a bit.
- one of the two groups assigned to the two groups is code block a, [a(0), a(l), a(2)...], and the other group is code block b, [b (0), b(l), b(2)...].
- some carriers can assign the first a bit to the code block a, and some carriers can assign the first a bit to the code block b.
- each carrier has a number (called cell index in LTE-A), and the response information can be allocated to the two groups according to the size of the number, from small to large, or from large to small. It is also possible to first allocate carriers supporting the transmission of the maximum two codewords, and after all the carriers supporting the transmission of the maximum two codewords are allocated, then allocate carriers supporting only one codeword transmission, and of course support the transmission of the maximum two codewords.
- a sequence can also be set between carriers, for example, their number size.
- the carriers supporting the maximum one codeword transmission can also be set in an order, such as their number size. Similarly, the maximum one codeword transmission can also be allocated first.
- Carrier then assign a carrier that supports transmission of up to two codewords, of course
- a sequence can also be set between carriers supporting the transmission of the maximum two codewords, for example, their number size, and the order of carriers supporting the transmission of the largest codeword can also be set, for example, their number size.
- these distribution methods and the order of assignment are fine. However, there is a part of the content to ensure that the number of bits in the two groups is at most 1, and some of the above allocation methods and allocation order are more suitable for satisfying this requirement.
- the user is configured with two component carriers, and each carrier is 4 downlink subframes that need to be fed back in one uplink subframe, for example, uplink subframe 2 of the uplink and downlink subframe configuration 2 in Table 4.
- Table 23 the current time base station side scheduling situation is shown in Table 23:
- Table 23 The user receives the component carrier and receives the maximum DAI of 3 on carrier 1, and the maximum DAI received on carrier 2 is 2.
- the response of carrier 1 and carrier 2 after the previous arrangement is sorted in case 1.
- the information bits are shown in Table 24:
- Table 24 One of the double RM codes dual RM code is code block a, [a(0), a(l), a(2) ... ], and the other group is code block b, [b(0), b(l), b(2)...].
- the response information bits are sorted and then alternately assigned to two code blocks as shown in Table 25 or Table 26:
- Table 26 (Allocation Mode 2, in the order of assigning two sets of carrier response information bits to the dual RM code, the adjacent carriers are alternated to assign the first a bits to the code block a or to put the first a The bits are allocated to the beginning of the code block b. It can be seen that if at least two downlink subframes on one component carrier have actual data transmission, that is, If at least two DCIs are sent in the subframe, then any of the above two methods assigned to the dual RM code (Table 9 and Table 10) can ensure that each code block of the dual RM code has actual data transmission.
- the response information bits even if only one downlink subframe per carrier has actual data transmission, the method of assigning to the dual RM code as shown in Table 10 can ensure that each code block has an acknowledgement information bit of the actual data transmission.
- Some of the above allocation methods and carrier allocation order may cause the number of bits in the two groups of the dual RM code to differ by more than one bit. If required in the dual RM code in the background art, the number of bits in the two groups can only be 1 bit wide.
- Case 1 If the determined number of downlink subframes to be fed back is an even number, regardless of the number of carriers supporting the maximum two codewords or the carrier of the largest one codeword, the last two parts are equally divided.
- Carrier 1 (two codewords) Code block a Code block b Code block a Carrier 2 (two codewords) Code block b Code block a Code block b Carrier 3 (1 code word) Code block a Code block b Code block a
- Carrier 1 (two codewords) code block a code block b code block a Carrier 2 (two codewords) code block b code block a code block b
- Carrier 3 (1 codeword) code block a code block b code block a carrier 4 (1 code word) code block b code block a code block b
- code block a is one more bit than code block b, as shown in Table 30:
- Solution 1 If it is determined that the number of sub-frames to be fed back is an odd number, and then add one to make an even number, then only the above case 1 is always available, and then the previous sorting group can satisfy the requirement; if this scheme is adopted, we When determining the number of subframes to be fed back, whether it is the number of associated subframes according to the HARQ timing relationship, or the DAI in the DCI corresponding to the control PUSCH transmission, if it is determined It is odd, then the last D adds 1 to this odd number. Correspondingly, the number of response information bits to be fed back also changes, and will not be described in detail.
- Solution 2 If the determined number of subframes to be fed back is an odd number, and the carrier supporting the maximum two codewords is an odd number, the two response information bits of the last subframe after each carrier are respectively allocated To two code blocks, as shown in Table 32:
- Carrier 1 (two codewords) Code block a (2bit) Code block b (2bit) code fast a (2bit) carrier 2 (two codewords) code block b (2bit) code block a (2bit) code fast b (2bit) Carrier 3 (two codewords) code block a (2bit) code block b (2bit) d(0) d(l)
- Code block a code fast b carrier 4 (1 code word) code block a (lbit) code block b (lbit) code block a (lbit) carrier 5 (1 code word) code block b (lbit) code block a (lbit) Code block b ( lbit )
- Manner 2 Different from mode 1, when the response information bits on each carrier are sorted, the arrangement is the last N_sps of the D a response information bits on the carrier.
- the X bit arrangement corresponds to the SPS scheduling without the DCI indication.
- the response information bits of the downlink subframe of DAI_max are all set to '0' for the remaining bits (D x a-( DAI max+N sps ) ⁇ a ).
- Method 3 Method 1 and 2 introduce the steps of sorting the response information, and then alternately assigning steps.
- the implementation described in the actual implementation may not be implemented in accordance with the first and second steps, but the substantive result is the same.
- the response information bits of the downlink subframes in which the DAI is odd may be allocated to one group, and the response information bits of the downlink subframes in which the DAI is even are allocated to another group, and correspondingly
- the appropriate position in the two sets of double RM codes is complemented by '0'. Note that it is possible that the response information of the downlink subframe in which the DAI of one carrier is an odd number and the response information of the downlink subframe in which the DAI of the other carrier is an even number are allocated to the same group.
- Step 303 Encoding each group of response information bits separately to obtain two sets of codeword bits, and generating two total codeword bits to be transmitted by two sets of codeword bits obtained by separately encoding.
- Step 304 Rate-match the encoded bits, then scramble, modulate, map, and transmit. Specifically, the operations of rate matching, scrambling, modulate, mapping, etc., according to whether the response information is transmitted on the PUCCH or transmitted on the PUSCH, respectively, according to corresponding requirements , no more details.
- Embodiment 4 of the present invention provides a method for processing how a base station receives response information. It should be noted that the product implementation is not necessarily implemented in strict accordance with the following method, but describes how the base station side can correctly obtain the response information of each subframe.
- the processing flow for receiving the response information by the base station according to Embodiment 4 of the present invention is as shown in FIG. 4, and includes the following steps:
- Step 401 Receive a total codeword bit that the transmitting end feeds back according to the downlink subframe in the component carrier.
- Step 402 Decode the received total codeword bits according to the set decoding mode, and obtain two groups of Answer information bits.
- Each of the response information bits includes at least one response information bit, the at least one response information bit corresponds to a physical downlink shared channel (PDSCH) transmission, and/or downlink control information DCI, where the DCI is used to indicate a downlink semi-persistent scheduling SPS. termination.
- PDSCH physical downlink shared channel
- the DAI_max is the maximum value of the DAI value in the DCI that is transmitted by the base station or that controls the downlink SPS to be terminated.
- the number of subframes D is determined by the HA Q relationship. After sorting the subframes, as shown in Table 35:
- Step 403 Mapping the two sets of response information bits to feedback information bits of the downlink subframe, Obtaining response information of the downlink subframe.
- the obtained two sets of response information bits are a(0), a(l), ..., and b(0), b(l), respectively, and the two sets of response information bits are alternately mapped to the sorted sub-bits.
- the frame as shown in Table 36:
- the base station knows which subframes have no actual data transmission, such as the remaining subframe 1 above, and the base station knows that its corresponding response information bits all take a value of '0'. In fact, the base station does not need to care about the value of the response information of the remaining subframes, and the base station only needs to care about the response information of the subframes of the actual data transmission.
- the role of the remaining sub-frames (including the previous embodiment) is only to occupy the position, so that the sub-frame and response information do not correspond to errors.
- the subframe received by the user with the actual data transmission and the subframe of the actual data transmission sent by the base station are inconsistent, so The actual data transmission arrangement received by the user and the actual data transmission arrangement of the base station are inconsistent, so that the base station may not accurately obtain the response information of the downlink subframe of each actual data transmission.
- DAI_max used by the base station may be different from the DAI_max used by the user. If it is not the same, what effect will it have on the solution of the invention? The following examples are given.
- Table 37 The base station assumes that the users are all received, and the analog sorting allocation is shown in Table 38:
- the fifth embodiment of the present invention provides an apparatus for encoding response information, which is used to perform the method steps described in the foregoing embodiments.
- the apparatus is located in the user equipment, and includes:
- a response information generating module configured to receive a component carrier, where the component carrier includes at least one downlink subframe, and generate, according to the received component carrier, a response information bit corresponding to the component carrier, and a grouping module, configured to:
- the response information bits generated by the response information generating module are divided into two groups such that each group includes at least one response information bit, and the at least one response information bit corresponds to a physical downlink shared channel PDSCH transmission, and/or downlink control information DCI, where The DCI is used to indicate that the downlink semi-persistent scheduling SPS terminates;
- an encoding module configured to respectively encode two sets of response information bits divided by the grouping module to obtain two sets of codeword bits, and generate two total codeword bits to be transmitted by respectively encoding two sets of codeword bits.
- the apparatus may include:
- the response information generating module 501 is configured to receive at least one component carrier, where each component carrier of the at least one component carrier includes at least one downlink subframe, and generate, according to each component carrier, a corresponding component of each component carrier. Response information bit;
- the grouping module 502 is configured to: according to the downlink control information DCI received on each of the component carriers for controlling the physical downlink shared channel (PDSCH) transmission, and/or the downlink control information for indicating the downlink semi-persistent scheduling SPS termination, the largest downlink value Allocating a value DAI_max indicating the DAI field, and the number of physical downlink shared channels PDSCH in the at least one downlink subframe through the semi-persistent scheduling SPS N_sps, sorting the response information bits corresponding to each of the component carriers; and sequentially assigning the response information bits corresponding to each of the component carriers to the two groups to obtain two sets of response information bits;
- the encoding module 503 is configured to separately encode the two sets of response information bits to obtain two sets of codeword bits, and generate total codeword bits to be transmitted according to the two sets of codeword bits respectively obtained by encoding.
- the device further comprises:
- the downlink subframe number determining module is configured to determine the number of downlink subframes D that need to generate the response information bits, and send the determined number of downlink subframes to the response information generating module.
- the downlink subframe number determining module includes a first downlink subframe number determining unit or a
- the number of the first sub-subframe frames of the first downlink sub-frame determines the order unit, and is used for the timing of the HHAARRQQ when the root is used according to the mixed-mix automatic retransmission request.
- the number of associated sub-subframe frames of the downlink and downlink sub-frames determines the number of sub-frames DD of the downlink sub-frames;
- the number of the second sub-downlink sub-subframe frames of the second and second downlink lines determines that the order unit unit is used for the root according to the control of the physical control, and the uplink shared line shared channel channel PPUUSSCCHH transmission transmission transmission
- the downlink downlink control packet information information DDCCII in the downlink downlink sub-allocation allocation finger indicates that the DDAAII word field segment takes a value value to determine the determined downlink sub-sub 1155 frame.
- the method for generating the modulo module block includes:
- the carrier wave configuration configuration information information is obtained by acquiring the unit cell, and is used for obtaining the maximum largest codeword of the carrier transmission and transmission for obtaining the energy carrier configuration of the carrier wave carrier configuration. Whether the number of words and the number between the code words and the words are adopted by the binding method;
- the response information is generated into a single unit element, and is used by the member to obtain the access unit according to the carrier wave configuration configuration according to the description.
- the 2200 carrier wave configuration configuration supports the maximum number of large codewords for the transmission and transmission, and whether the codewords are tied between the codewords. Determining a square mode, to determine, for each of the respective downlink sub-subframe frame pairs, the corresponding response bit information corresponding to the bit-specific bit-bit number Number aa. .
- the described sub-grouping module module block includes: a sorting unit, configured to: according to the received value DAI_max of the DAI field used for controlling the PDSCH transmission and/or the DCI for indicating the downlink SPS termination, and the semi-persistent scheduling SPS in the downlink subframe Sorting the response information bits by the number of physical downlink shared channel PDSCHs N_sps;
- an allocating unit configured to alternately allocate the sorted response information bits of the sorting unit to the two groups.
- the sorting unit further includes:
- a first sorting subunit configured to place the response information bits corresponding to the N_sps PDSCHs in the first N_sps x a bit positions
- a third sorting subunit for setting the remaining (D X a-(DAI_max+N_sps) x a ) response information bits to '0,;
- the sorting unit further includes:
- a fourth sorting subunit configured to place the response information bits corresponding to the N_sps PDSCHs in a post N_sps x a bit positions
- the sixth sorting subunit is configured to set the remaining (D X a-(DAI_max+N_sps) x a ) response information bits to '0.
- the allocating unit comprises: a sub-group dividing unit, configured to divide the sorted response information bits into the D sub-groups evenly; the allocating unit further includes: a first allocating sub-unit, configured to allocate the sub-groups whose sub-group numbers are odd to the two a first group in the group, a subgroup having an even number of subgroups is assigned to the second group of the two groups; and/or,
- a second allocation sub-unit configured to allocate the sub-group with the sub-group number even number to the first group of the two groups, and assign the sub-group with the sub-group number to the odd group to the second group of the two groups.
- the allocating unit alternately uses the first allocation subunit according to the set component carrier arrangement order according to the sorted response information corresponding to each component carrier. And a second allocation subunit.
- the number of actual downlink subframes determined by the downlink subframe number determining module is an odd number, the number of the actual downlink subframes is increased by one as the number of the downlink subframes.
- the allocating unit further includes: a third allocation subunit, configured to: when the component carrier includes multiple carriers, the D is an odd number, and each of the component carriers corresponds to each downlink subframe When the number of component carriers b whose number of response information bits is 2 is an odd number,
- the last two response information bits of the response information bits of the last member wave b in the component carrier are respectively allocated to the two groups, wherein the component carriers are arranged in the set order.
- the grouping module is used to:
- the response message corresponding to the downlink subframe corresponding to the DAI field value in the received DCI is an odd number
- the information bits are allocated to the first group of the two groups, and the response information bits corresponding to the corresponding downlink subframes when the DAI field is even are allocated to the second group of the two groups.
- the response information generating module is further configured to generate response information bits corresponding to the first codeword and the second codeword respectively transmitted by each downlink subframe in each of the component carriers;
- the response information bits respectively corresponding to the first codeword and the second codeword of each downlink subframe transmission are mapped to two response information bits d(0) and d(1), such that each of the When at least one first downlink subframe of the component carrier transmits only one codeword, the response information bits corresponding to one codeword of the at least one first downlink subframe transmission are mapped to d(0); and/or When at least one second downlink subframe of each of the component carriers transmits only one codeword, the response information bits corresponding to one codeword transmitted by the at least one second downlink subframe are mapped to d(1).
- the sixth embodiment of the present invention provides a device for processing response information, which is used to perform the method steps described in the foregoing embodiments.
- the device is located at a base station, and includes:
- a receiving module configured to receive a total codeword bit that is sent back by the transmitting end according to the downlink subframe in the component carrier; and a decoding module, configured to decode the received total codeword bit according to the set decoding manner, to obtain two sets of response information a bit, where each set of response information bits includes at least one response information bit, the at least one response information bit corresponding to a physical downlink shared channel PDSCH transmission, and/or downlink control information DCI, wherein the DCI is used to indicate downlink half-continuation
- the scheduling module is configured to map the two sets of response information bits obtained by the decoding module to the feedback information bits of the downlink subframe to obtain response information of the downlink subframe.
- the apparatus may include:
- the receiving module 601 is configured to receive a total codeword bit fed back by the transmitting end;
- the total codeword bit is obtained by the transmitting end separately encoding two sets of response information bits to obtain two sets of codeword bits, and are generated by separately encoding two sets of codeword bits;
- the two sets of response information bits are: the transmitting end receives at least one component carrier, and generates a response information bit corresponding to each component carrier of the at least one component carrier; according to each component carrier Obtaining a value DAI_max of a downlink allocation indication DAI field, which is obtained by controlling the physical downlink shared channel PDSCH transmission and/or indicating the downlink semi-persistent scheduling SPS termination, and the maximum value of the downlink allocation indication DAI field, and each of the component carriers Sorting the response information bits corresponding to each of the component carriers by using the number N_sps of the physical downlink shared channel PDSCH of the semi-persistent scheduling SPS in at least one downlink subframe; and sorting each of the component carriers corresponding to the sorting
- the response information bits are alternately allocated to the two groups;
- the decoding module 602 is configured to: decode the received total codeword bits according to the set decoding manner, to obtain the two sets of response information bits;
- mapping module 603 is configured to map the two sets of response information bits to the feedback information bits of the at least one downlink subframe to obtain response information of the at least one downlink subframe.
- the N-sps is the number of physical downlink shared channel PDSCHs that are semi-persistently scheduled in the downlink subframe, and the DCI is used to control PDSCH transmission and/or to indicate downlink SPS termination, and the downlink allocation indication
- the DAI field is located in the DCI, where a is the number of bits of the response information bit corresponding to each of the downlink subframes.
- Step 701 Generate response information bits of the component carrier according to the number of downlink subframes and the downlink data receiving situation of the uplink subframe feedback response information, where at least one response information bit d(0), d(l) is generated.
- a downlink subframe if only one codeword is transmitted, the response information corresponding to the one codeword corresponds to the bit d(0); at least one downlink subframe for generating two response information bits d(0), d(;i)
- a frame if there is only one codeword transmission, the response information corresponding to the one codeword corresponds to the bit d(l).
- the determining the number of downlink subframes D of the uplink subframe feedback response information may be determined by the method in the first embodiment according to the HARQ relationship in the uplink and downlink configuration table 2, or by the number of associated downlink subframes.
- the method in the second embodiment is determined according to the DAI value in the DCI that controls the uplink PUSCH transmission.
- the generating the response information bit includes determining, according to the number of codewords that can be supported for transmission by the component carrier, and whether the binding mode is used between the codewords to determine the number of response information bits that need to be fed back for each downlink subframe. specifically,
- each downlink subframe on the carrier feeds back one acknowledgement information bit d(0).
- the 1 bit d(0) takes the value T to represent the data transmission on the downlink subframe.
- the input is correctly received, and d(0) takes a value of '0, indicating that the data transmission on the downlink subframe is incorrectly received or that no data is received on the downlink subframe, or the value is reversed; where the data refers to: PDSCH transmission or indication Down-Last Persistence Scheduling (SPS) terminates the "Control Information" (Downlink Control Information, DCI).
- SPS Down-Last Persistence Scheduling
- each codeword of each downlink subframe on the carrier needs 1 bit feedback, and a total of 2 response information bits are required to feed back d(0), d(l).
- the value of 1 bit T indicates that the data transmission of one of the codewords in the downlink subframe is correctly received, and the value '0' indicates that the data transmission of one of the codewords in the downlink subframe is incorrectly received or not in the downlink subframe. Receive data on one of the codewords, or vice versa.
- the other bit takes a value of '1, indicating that the data transmission of another codeword in the downlink subframe is correctly received, and the value '0' indicates that the data transmission of another codeword in the downlink subframe is incorrectly received or not in the downlink.
- the data of another codeword is received on the frame, or vice versa.
- d(0) corresponds to the response information bit of the first codeword
- d(1) corresponds to the response information bit of the second codeword.
- one carrier is configured to support transmission of 2 codewords, in practice, it is sometimes possible to transmit only one codeword in a certain subframe.
- the subframe is used for SPSCH scheduled PDSCH data transmission, or the subframe is retransmitted a previously received codeword, or there is no PDSCH transmission on the subframe, and only the downlink SPS terminates the corresponding DCI (in this case, although The concept of the codeword is not exactly the same, but only one bit of response information is needed at this time, and we also think it corresponds to one codeword).
- the response information of the codeword corresponds to d(0), d(i;)
- at least one downlink for generating two response information bits d(0), d(l) is generated.
- Subframe if there is only one codeword transmission, the response information corresponding to the one codeword corresponds to bit 0;); at least one downlink subframe to generate two response information bits d O ⁇ dCl), if there is only one codeword Transmitting, the response information corresponding to the one codeword corresponds to the bit d(l). For example, there are 4 downlink subframes, and downlink subframes 1, 2, 3, and 4.
- the response information corresponding to the one codeword corresponds to the bit d(0); if only one codeword transmission is specified on the downlink subframe 2, The response information corresponding to one codeword corresponds to the bit d(1); if there is only one codeword transmission on the downlink subframe 3, the response information corresponding to the one codeword corresponds to the bit d(0); If there is only one codeword transmission, the response information corresponding to the one codeword corresponds to the bit d(l). Another codeword is considered to be unreceived, and the corresponding other bit d(l) or d(0) takes a value of '0'. Obviously, if the PDSCH transmission or the DCI indicating the downlink SPS release is not received, the two bits d(0), d(l) take the value '0'.
- each downlink subframe on the carrier only needs to feed back one of the acknowledged information bits d ( 0). Specifically, if a codeword (including one codeword in the PDSCH or only the DCI indicating the downlink SPS release) is actually transmitted, it is that the codeword is correctly received; if two codewords are actually transmitted, that is Both code words were received correctly.
- the 1 bit takes a value of '0', indicating that at least one of the actually transmitted codewords on the downlink subframe has received the data transmission error or the data of the two codewords is not received on the downlink subframe.
- the total number of bits is D*a.
- Step 702 Sort the response information bits of the D downlink subframes of the downlink carrier to obtain a response information bit sequence to be transmitted.
- the response information bits corresponding to the D downlink subframes of the first downlink carrier are aligned, and then the response information bits corresponding to the D downlink subframes of the second downlink carrier are arranged, and so on, until all the downlinks are The response information bits corresponding to the downlink subframes on the carrier are arranged.
- the correspondence between the a(i) and the downlink subframes on the downlink carrier in the sequence is as shown in Table 39, where the two response information bits corresponding to each downlink subframe are d(0), d(l). ) corresponding to bits a(2i), a(2i+l), respectively.
- Step 703 The obtained bits of the response information bit sequence to be transmitted are divided into two groups, wherein the response information bits of the odd-numbered positions are allocated to the first group, and the response information bits of the even-numbered positions are allocated to the second group.
- Step 704 Encode each group of response information bit sequences separately.
- Step 705 Rate-match the encoded bits, then map and send.
- the disclosed systems, devices, and methods may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
- the units described as separate components may or may not be physically separate, and the components displayed as the units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
- the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention contributes in essence or to the prior art, or the entire technical solution
- the portion or portion may be embodied in the form of a software product stored in a storage medium, including thousands of instructions for causing a computer device (which may be a personal computer, server, processor or network device, etc.) to execute All or part of the steps of the method described in various embodiments of the invention.
- the foregoing storage medium includes: a USB flash drive, a removable hard disk, and a read only memory (ROM, Read-Only)
- RAM random access memory
- disk disk or optical disk, etc., which can store program code.
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CA2824876A CA2824876C (en) | 2011-01-17 | 2012-01-17 | Method and apparatus for encoding and processing acknowledgement information |
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KR20130116911A (ko) | 2013-10-24 |
CN103314549B (zh) | 2017-12-01 |
KR20160015405A (ko) | 2016-02-12 |
EP2866371A1 (en) | 2015-04-29 |
US10171219B2 (en) | 2019-01-01 |
CN103314549A (zh) | 2013-09-18 |
CA2824876A1 (en) | 2012-07-26 |
US20190123880A1 (en) | 2019-04-25 |
EP2654231B1 (en) | 2014-12-31 |
CA2824876C (en) | 2015-04-07 |
EP3367600A1 (en) | 2018-08-29 |
PT2654231E (pt) | 2015-04-16 |
RU2013138364A (ru) | 2015-02-27 |
EP2654231A1 (en) | 2013-10-23 |
CN102594493A (zh) | 2012-07-18 |
US10715295B2 (en) | 2020-07-14 |
US20160338029A1 (en) | 2016-11-17 |
EP2654231A4 (en) | 2013-10-30 |
US20130301586A1 (en) | 2013-11-14 |
RU2549154C2 (ru) | 2015-04-20 |
KR101612728B1 (ko) | 2016-04-15 |
US9408203B2 (en) | 2016-08-02 |
EP2866371B1 (en) | 2017-11-15 |
CN102594493B (zh) | 2014-08-20 |
KR101591370B1 (ko) | 2016-02-03 |
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