WO2019154126A1 - Procédé et dispositif de détermination de livre de codes de rétroaction - Google Patents

Procédé et dispositif de détermination de livre de codes de rétroaction Download PDF

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Publication number
WO2019154126A1
WO2019154126A1 PCT/CN2019/073164 CN2019073164W WO2019154126A1 WO 2019154126 A1 WO2019154126 A1 WO 2019154126A1 CN 2019073164 W CN2019073164 W CN 2019073164W WO 2019154126 A1 WO2019154126 A1 WO 2019154126A1
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Prior art keywords
pdcch
feedback
carrier
information
determining
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PCT/CN2019/073164
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English (en)
Chinese (zh)
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司倩倩
高雪娟
王磊
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电信科学技术研究院有限公司
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Publication of WO2019154126A1 publication Critical patent/WO2019154126A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • 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
    • 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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • H04L1/1858—Transmission or retransmission of more than one copy of acknowledgement message
    • 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
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for determining a feedback codebook.
  • the scheduling method using cross-slots is supported, so the detection opportunity is detected on one physical downlink control channel (Physical Downlink Control Channel, PDCCH).
  • PDCCH Physical Downlink Control Channel
  • more than one PDCCH for scheduling downlink data transmissions of different time slots or different lengths in the same time slot may be transmitted.
  • two PDCCHs are transmitted in the PDCCH detection opportunities of slot 0, slot 2, slot 4, and slot 6, respectively, for scheduling downlinks in n+2 and slot n+3, respectively.
  • the grid filling box represents a PDCCH detection opportunity
  • the slanted padding box represents a Physical Downlink Shared Channel (PDSCH) in the same feedback window
  • the horizontal line filling box represents a hybrid automatic retransmission response message (Hybrid) Automatic Repeat request Acknowledgement (HARQ-ACK) feedback
  • dotted arrows indicate PDCCH-PDSCH scheduling timing
  • solid arrows indicate PDSCH-HARQ-ACK feedback timing.
  • the above situation is not considered, which may result in an erroneous semi-static feedback codebook.
  • the above situation is not considered, which may result in an erroneous semi-static feedback codebook.
  • CBG code block group
  • multi-codeword transmission are not configured when the feedback codebook is generated.
  • the corresponding 4-bit feedback information is generated, but in fact, two PDCCHs are transmitted in each PDCCH detection opportunity, and eight PDSCH transmissions in the feedback window are scheduled, and four PDSCHs are used in the semi-static codebook scheme in the related art. Feedback.
  • the embodiments of the present disclosure provide a method and an apparatus for determining a feedback codebook to solve the semi-static feedback codebook determination scheme in the related art, and do not consider that in one PDCCH detection opportunity, more than one may be used for scheduling different times. In the case of a PDCCH or a PDCCH with different lengths of downlink data transmission in the same time slot, the generated semi-static feedback codebook is inaccurate and affects the transmission performance of the system.
  • an embodiment of the present disclosure provides a method for determining a feedback codebook, including:
  • the feedback codebook information is determined according to the length of the target feedback information.
  • the acquiring the first PDCCH quantity that is transmitted in one physical downlink control channel PDCCH detection opportunity of one carrier includes one of the following manners:
  • the first PDCCH number is determined according to the PDCCH detection opportunity period.
  • the first PDCCH number is determined by the sum of the number of PDCCH candidate sets corresponding to the search space that needs to perform HARQ-ACK feedback configured in at least one control information resource set of one carrier of one carrier
  • the PDCCH corresponding to the search space that needs to perform HARQ-ACK feedback is scrambled by the cell radio network temporary identifier or the semi-persistent scheduling radio network temporary identifier.
  • the determining the first PDCCH quantity according to the PDCCH detection opportunity period includes one of the following manners:
  • the first PDCCH number is determined according to the PDCCH detection opportunity period and the physical downlink shared channel PDSCH resource allocation information configured by the radio resource control.
  • the first PDCCH quantity is an integer greater than or equal to 1 and less than or equal to 4.
  • the step of determining, according to the first PDCCH quantity, a length of target feedback information of one PDCCH detection opportunity of one carrier includes:
  • N A1 ⁇ A2 ⁇ A3;
  • N is the length of the target feedback information of one PDCCH detection opportunity of one carrier;
  • A1 is the number of first PDCCHs transmitted in one PDCCH detection opportunity of one carrier;
  • A2 is the number of transport blocks configured by the carrier;
  • A3 is a carrier configured The number of maximum code block groups CBG.
  • the step of determining the feedback codebook information according to the length of the target feedback information includes:
  • the feedback information of each PDCCH is concatenated according to the length of the target feedback information, and the feedback codebook information of one PDCCH detection opportunity of one carrier is determined.
  • the determining the feedback information of each PDCCH in one PDCCH detection opportunity of one carrier includes one of the following manners:
  • the one-bit feedback information is determined for each of the transport blocks.
  • the feedback information corresponding to the at least one transport block is cascaded according to the order of the transport block to obtain a corresponding PDCCH.
  • the feedback information corresponding to the at least one CBG is cascaded in the order of the CBG to obtain the feedback information corresponding to the transport block, and for each PDCCH, the feedback corresponding to the at least one transport block is used.
  • the information is cascaded according to the order of the transport block to obtain feedback information corresponding to the PDCCH;
  • the feedback information corresponding to the two transport blocks is concatenated in the order of the CBGs to obtain the feedback information corresponding to the PDCCH.
  • the determining manner of the ordering of the PDCCH includes one of the following manners:
  • the number of the first PDCCH is the number of control information resource sets configured in one PDCCH detection opportunity of one carrier, determining the order of the PDCCH according to the identification information of the control information resource set corresponding to the PDCCH;
  • the number of the first PDCCH is the sum of the number of search spaces configured to transmit the PDCCH that needs to perform HARQ-ACK feedback in the at least one control information resource set of one PDCCH detection opportunity of one carrier, according to the control information resource set corresponding to the PDCCH Identification information of the search space and identification information of the search space, determining the order of the PDCCH;
  • the first PDCCH number is the sum of the number of PDCCH candidate sets corresponding to the search space that needs to perform HARQ-ACK feedback configured in at least one control information resource set of one PDCCH detection opportunity of one carrier, according to the control information resource set corresponding to the PDCCH Identification information, identification information of the search space, and PDCCH candidate order in the search space, determining the order of the PDCCH;
  • the number of the first PDCCH is the sum of the number of CCEs included in the control information resource set of one PDCCH detection opportunity of one carrier, the identification information of the control information resource set corresponding to the PDCCH and the identifier of the CCE in the control information resource set Sorting information to determine the ordering of PDCCHs;
  • the PDCCH ordering information is determined according to the PDCCH ordering indication information added in the downlink control information, and the PDCCH ordering is determined according to the order of the PDCCH ordering information from small to large.
  • the method for determining a feedback codebook further includes:
  • the feedback information of the PDCCH feedback information corresponding to the PDCCH is not filled with non-acknowledgment or non-continuous transmission feedback information.
  • Embodiments of the present disclosure also provide a feedback codebook determining apparatus including a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor executes the computer program The following steps are implemented:
  • the feedback codebook information is determined according to the length of the target feedback information.
  • processor implements one of the following steps when executing the computer program:
  • the first PDCCH number is determined according to the PDCCH detection opportunity period.
  • the first PDCCH number is determined by the sum of the number of PDCCH candidate sets corresponding to the search space that needs to perform HARQ-ACK feedback configured in at least one control information resource set of one carrier of one carrier
  • the PDCCH corresponding to the search space that needs to perform HARQ-ACK feedback is scrambled by the cell radio network temporary identifier or the semi-persistent scheduling radio network temporary identifier.
  • processor implements one of the following steps when executing the computer program:
  • the first PDCCH number is determined according to the PDCCH detection opportunity period and the physical downlink shared channel PDSCH resource allocation information configured by the radio resource control.
  • the first PDCCH quantity is an integer greater than or equal to 1 and less than or equal to 4.
  • N A1 ⁇ A2 ⁇ A3;
  • N is the length of the target feedback information of one PDCCH detection opportunity of one carrier;
  • A1 is the number of first PDCCHs transmitted in one PDCCH detection opportunity of one carrier;
  • A2 is the number of transport blocks configured by the carrier;
  • A3 is a carrier configured The number of maximum code block groups CBG.
  • the feedback information of each PDCCH is concatenated according to the length of the target feedback information, and the feedback codebook information of one PDCCH detection opportunity of one carrier is determined.
  • processor implements one of the following steps when executing the computer program:
  • the one-bit feedback information is determined for each of the transport blocks.
  • the feedback information corresponding to the at least one transport block is cascaded according to the order of the transport block to obtain a corresponding PDCCH.
  • the feedback information corresponding to the at least one CBG is cascaded in the order of the CBG to obtain the feedback information corresponding to the transport block, and for each PDCCH, the feedback corresponding to the at least one transport block is used.
  • the information is cascaded according to the order of the transport block to obtain feedback information corresponding to the PDCCH;
  • the feedback information corresponding to the two transport blocks is concatenated in the order of the CBGs to obtain the feedback information corresponding to the PDCCH.
  • the processor when performing the determination of the ordering of the PDCCH, the processor implements one of the following steps when executing the computer program:
  • the number of the first PDCCH is the number of control information resource sets configured in one PDCCH detection opportunity of one carrier, determining the order of the PDCCH according to the identification information of the control information resource set corresponding to the PDCCH;
  • the number of the first PDCCH is the sum of the number of search spaces configured to transmit the PDCCH that needs to perform HARQ-ACK feedback in the at least one control information resource set of one PDCCH detection opportunity of one carrier, according to the control information resource set corresponding to the PDCCH Identification information of the search space and identification information of the search space, determining the order of the PDCCH;
  • the first PDCCH number is the sum of the number of PDCCH candidate sets corresponding to the search space that needs to perform HARQ-ACK feedback configured in at least one control information resource set of one PDCCH detection opportunity of one carrier, according to the control information resource set corresponding to the PDCCH Identification information, identification information of the search space, and PDCCH candidate order in the search space, determining the order of the PDCCH;
  • the number of the first PDCCH is the sum of the number of CCEs included in the control information resource set of one PDCCH detection opportunity of one carrier, the identification information of the control information resource set corresponding to the PDCCH and the identifier of the CCE in the control information resource set Sorting information to determine the ordering of PDCCHs;
  • the PDCCH ordering information is determined according to the PDCCH ordering indication information added in the downlink control information, and the PDCCH ordering is determined according to the order of the PDCCH ordering information from small to large.
  • the feedback information of the PDCCH feedback information corresponding to the PDCCH is not filled with non-acknowledgment or non-continuous transmission feedback information.
  • Embodiments of the present disclosure also provide a computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement the steps of the feedback codebook determining method described above.
  • the embodiment of the present disclosure further provides a feedback codebook determining apparatus, including:
  • An acquiring module configured to acquire a first PDCCH quantity transmitted in a PDCCH detection opportunity of one physical downlink control channel of one carrier;
  • a first determining module configured to determine, according to the first PDCCH quantity, a length of target feedback information of one PDCCH detection opportunity of one carrier;
  • the second determining module is configured to determine the feedback codebook information according to the length of the target feedback information.
  • the obtaining module is configured to perform one of the following ways:
  • the first PDCCH number is determined according to the PDCCH detection opportunity period.
  • the first PDCCH number is determined by the sum of the number of PDCCH candidate sets corresponding to the search space that needs to perform HARQ-ACK feedback configured in at least one control information resource set of one carrier of one carrier
  • the PDCCH corresponding to the search space that needs to perform HARQ-ACK feedback is scrambled by the cell radio network temporary identifier or the semi-persistent scheduling radio network temporary identifier.
  • the determining the first PDCCH quantity according to the PDCCH detection opportunity period includes one of the following manners:
  • the first PDCCH number is determined according to the PDCCH detection opportunity period and the physical downlink shared channel PDSCH resource allocation information configured by the radio resource control.
  • the first PDCCH quantity is an integer greater than or equal to 1 and less than or equal to 4.
  • the first determining module is configured to:
  • N A1 ⁇ A2 ⁇ A3, the length of the target feedback information of one PDCCH detection opportunity of one carrier is obtained;
  • N is the length of the target feedback information of one PDCCH detection opportunity of one carrier;
  • A1 is the number of first PDCCHs transmitted in one PDCCH detection opportunity of one carrier;
  • A2 is the number of transport blocks configured by the carrier;
  • A3 is a carrier configured The number of maximum code block groups CBG.
  • the second determining module includes:
  • a first determining unit configured to determine feedback information of each PDCCH in one PDCCH detection opportunity of one carrier
  • a second determining unit configured to determine, according to the order of the PDCCH, the feedback information of each PDCCH according to the length of the target feedback information, and determine feedback codebook information of one PDCCH detection opportunity of one carrier.
  • the first determining unit is configured to perform one of the following ways:
  • the one-bit feedback information is determined for each of the transport blocks.
  • the feedback information corresponding to the at least one transport block is cascaded according to the order of the transport block to obtain a corresponding PDCCH.
  • the feedback information corresponding to the at least one CBG is cascaded in the order of the CBG to obtain the feedback information corresponding to the transport block, and for each PDCCH, the feedback corresponding to the at least one transport block is used.
  • the information is cascaded according to the order of the transport block to obtain feedback information corresponding to the PDCCH;
  • the feedback information corresponding to the two transport blocks is concatenated in the order of the CBGs to obtain the feedback information corresponding to the PDCCH.
  • the determining manner of the ordering of the PDCCH includes one of the following manners:
  • the number of the first PDCCH is the number of control information resource sets configured in one PDCCH detection opportunity of one carrier, determining the order of the PDCCH according to the identification information of the control information resource set corresponding to the PDCCH;
  • the number of the first PDCCH is the sum of the number of search spaces configured to transmit the PDCCH that needs to perform HARQ-ACK feedback in the at least one control information resource set of one PDCCH detection opportunity of one carrier, according to the control information resource set corresponding to the PDCCH Identification information of the search space and identification information of the search space, determining the order of the PDCCH;
  • the first PDCCH number is the sum of the number of PDCCH candidate sets corresponding to the search space that needs to perform HARQ-ACK feedback configured in at least one control information resource set of one PDCCH detection opportunity of one carrier, according to the control information resource set corresponding to the PDCCH Identification information, identification information of the search space, and PDCCH candidate order in the search space, determining the order of the PDCCH;
  • the number of the first PDCCH is the sum of the number of CCEs included in the control information resource set of one PDCCH detection opportunity of one carrier, the identification information of the control information resource set corresponding to the PDCCH and the identifier of the CCE in the control information resource set Sorting information to determine the ordering of PDCCHs;
  • the PDCCH ordering information is determined according to the PDCCH ordering indication information added in the downlink control information, and the PDCCH ordering is determined according to the order of the PDCCH ordering information from small to large.
  • the feedback codebook determining apparatus further includes:
  • a padding module configured to: when the number of PDCCHs is less than the number of the first PDCCH, the feedback information of the PDCCH feedback information corresponding to the PDCCH is not filled with non-acknowledgment or discontinuous transmission.
  • the foregoing solution determines the length of the target feedback information of one PDCCH detection opportunity of one carrier according to the first PDCCH number transmitted in one PDCCH detection opportunity of one carrier, and then determines the feedback codebook information according to the length of the target feedback information, In this way, a relatively accurate semi-static feedback codebook can be generated, which ensures the transmission performance of the system and improves the reliability of network communication.
  • FIG. 1 is a schematic diagram showing a PDCCH detection opportunity transmitting multiple PDCCHs
  • FIG. 2 is a schematic flowchart diagram of a method for determining a feedback codebook according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram showing three PDCCHs transmitted by one PDCCH detection opportunity in case one;
  • 4 is a schematic diagram showing a sequence of HARQ-ACK bits generated in case one;
  • FIG. 5 is a schematic diagram showing four PDCCHs transmitted by one PDCCH detection opportunity in case two;
  • FIG. 6 is a schematic diagram showing a sequence of HARQ-ACK bits generated in Case 2;
  • FIG. 7 is a schematic diagram showing four PDCCHs transmitted by one PDCCH detection opportunity in case three;
  • FIG. 8 is a schematic diagram showing a sequence of HARQ-ACK bits generated in case three;
  • FIG. 9 is a block diagram showing a feedback codebook determining apparatus according to an embodiment of the present disclosure.
  • FIG. 10 is a block diagram showing a configuration of a feedback codebook determining apparatus according to an embodiment of the present disclosure.
  • the HARQ-ACK feedback is supported using a semi-static codebook scheme.
  • a feedback window M which is defined as the slot interval between the maximum and minimum data to feedback based on the high layer signaling configuration, and the high layer signaling configuration to the user equipment.
  • DCI Downlink Control Information
  • the PDCCH detection opportunity corresponds to the HARQ-ACK in the same physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH).
  • the corresponding feedback bit is generated for each PDCCH detection opportunity on each carrier in the order of increasing the PDCCH detection opportunity index after the first carrier index is increased, and the specific process is as follows:
  • the carrier is configured with HARQ-ACK without spatial combining, without using CBG-based HARQ-ACK feedback, and the current carrier is configured to receive two transport blocks, then one bit of feedback information is generated for each transport block, The current carrier current PDCCH detection opportunity generates a total of 2 bits of feedback information;
  • the carrier is configured with HARQ-ACK using spatial combining, without using CBG-based HARQ-ACK feedback, and the current carrier is configured to receive two transport blocks
  • logically AND operation is performed on 1-bit feedback information of the two transport blocks.
  • a total of 1 bit of feedback information is generated for the current PDCCH detection opportunity of the current carrier. If the terminal only receives one transport block, it is assumed that the feedback information corresponding to the second transport block is ACK;
  • the carrier is configured to use CBG-based HARQ-ACK feedback, and the current carrier is configured to receive two transport blocks, then X-bit feedback information is generated for each transport block, and X is the maximum used on the high-level signaling configuration carrier.
  • the carrier is configured to use the CBG-based HARQ-ACK feedback
  • the current carrier is configured to receive one transport block
  • the current carrier current PDCCH detection opportunity generates a total of X bits of feedback information, and X is used on the high-level signaling configuration carrier.
  • the present disclosure is directed to a semi-static feedback codebook determination scheme in the related art, and does not consider that in one PDCCH detection opportunity, more than one PDCCH for scheduling different time slots or downlink data transmissions of different lengths in the same slot may be transmitted.
  • the situation that the generated semi-static feedback codebook is inaccurate and affects the transmission performance of the system provides a method and device for determining the feedback codebook.
  • the method for determining a feedback codebook includes:
  • Step 21 Acquire a first PDCCH quantity transmitted in a PDCCH detection opportunity of one physical downlink control channel of one carrier;
  • the first PDCCH number refers to the maximum number of PDCCHs that can be transmitted in one PDCCH detection opportunity of one carrier.
  • Step 22 Determine, according to the first PDCCH quantity, a length of target feedback information of one PDCCH detection opportunity of one carrier;
  • the length of the target feedback information is specifically the number of bits of the target feedback information.
  • Step 23 Determine feedback codebook information according to the length of the target feedback information.
  • the feedback codebook determining method can be applied to the terminal, and can also be applied to the base station, that is, the terminal according to the feedback code.
  • the determining method generates the feedback codebook information and sends the information to the base station, and the base station determines the feedback codebook information sent by the terminal according to the feedback codebook determining method, and receives the feedback codebook information at the corresponding location.
  • step 21 can be implemented in one of the following ways:
  • the first method is to determine the number of control information resources configured in one PDCCH detection opportunity of one carrier as the first PDCCH number;
  • Manner 2 The sum of the number of search spaces allocated for transmitting the PDCCH required to perform hybrid automatic repeat transmission response information (HARQ-ACK) feedback in all the control information resource sets in one PDCCH detection opportunity of one carrier is determined as the first a number of PDCCHs;
  • HARQ-ACK hybrid automatic repeat transmission response information
  • the third method determines the sum of the number of PDCCH candidate sets corresponding to the search space that needs to be subjected to HARQ-ACK feedback in all the control information resource sets in one PDCCH detection opportunity of one carrier, and determines the first PDCCH number;
  • the PDCCH corresponding to the search space that needs to perform HARQ-ACK feedback in the implementation manner is a cell radio network temporary identifier (C-RNTI) or a semi-persistent scheduling radio network temporary identifier (SPS-RNTI). Scrambled.
  • C-RNTI cell radio network temporary identifier
  • SPS-RNTI semi-persistent scheduling radio network temporary identifier
  • the number of the first PDCCH is predefined in the communication protocol standard, and the terminal or the base station can directly obtain the PDCCH.
  • Manner 6 Obtain a first PDCCH quantity configured by the base station by using high layer signaling
  • the first PDCCH number is configured by the base station to the terminal by using high layer signaling (for example, radio resource control (RRC) signaling)
  • the first PDCCH number is an integer greater than or equal to 1 and less than or equal to 4.
  • Manner 7 Determine a first PDCCH quantity according to a PDCCH detection opportunity period.
  • the method 7 can be implemented in one of the following manners:
  • the PDCCH detection opportunity period is determined as the first PDCCH number
  • the first PDCCH number is equal to the PDCCH detection opportunity period. For example, if the PDCCH detection opportunity period on one carrier is 2 time slots, it means that there is one PDCCH detection opportunity in every two time slots. To ensure that downlink transmissions in all time slots can be scheduled, one PDCCH detection opportunity is obtained.
  • the number of first PDCCHs transmitted ie, the maximum number of PDCCHs is 2.
  • the method A2 determining, according to a PDCCH detection opportunity period and a radio resource control (RRC) configured physical downlink shared channel (PDSCH) resource allocation information, a first PDCCH number;
  • RRC radio resource control
  • the first PDCCH number is determined by the PDCCH detection opportunity period and the RRC configuration PDSCH resource allocation information.
  • the first PDCCH number is a PDSCH that does not overlap in the maximum time domain that can be transmitted in the PDCCH detection opportunity period.
  • the number of times, for example, the detection opportunity period is 1 time slot, but the minimum length of the PDSCH transmission indicated in the RRC configured PDSCH resource allocation information is 7 orthogonal frequency division multiplexing (OFDM) symbols, and one time slot (required description) If a maximum of two PDSCHs are transmitted in one slot including 14 OFDM symbols, the number of first PDCCHs transmitted in one PDCCH detection opportunity is two.
  • OFDM orthogonal frequency division multiplexing
  • step 22 is:
  • N A1 ⁇ A2 ⁇ A3;
  • N is the length of the target feedback information of one PDCCH detection opportunity of one carrier;
  • A1 is the number of first PDCCHs transmitted in one PDCCH detection opportunity of one carrier;
  • A2 is the number of transport blocks configured by the carrier;
  • A3 is a carrier configured The number of maximum code block groups CBG.
  • step 23 is:
  • the feedback information of each PDCCH is concatenated according to the length of the target feedback information, and the feedback codebook information of one PDCCH detection opportunity of one carrier is determined.
  • the implementation manner of determining feedback information of each PDCCH in one PDCCH detection opportunity of one carrier includes one of the following implementation manners:
  • the carrier when the carrier does not perform the CBG-based HARQ-ACK feedback, one-bit feedback information is determined for each transport block, and for each PDCCH, the feedback information corresponding to the at least one transport block is cascaded according to the order of the transport block.
  • the feedback information corresponding to the PDCCH is determined according to the feedback information of each transport block in one PDCCH, because each transport block is sequentially divided, so when cascading, only the transport block is required.
  • the order of dividing one by one is to cascade the feedback information corresponding to the transport block to obtain feedback information corresponding to one PDCCH.
  • the feedback information corresponding to the at least one CBG is cascaded according to the CBG sequence to obtain the feedback information corresponding to the transport block, and for each PDCCH, at least one transport block is used.
  • Corresponding feedback information is cascaded according to the order of the transport block to obtain feedback information corresponding to the PDCCH;
  • each CBG is divided into multiple CBGs, and each CBG is sequentially divided.
  • the feedback information corresponding to the CBG is cascaded according to the CBG division order.
  • the feedback information corresponding to each transport block is obtained, and then the feedback information corresponding to the transport block is cascaded according to the division order of the transport block to obtain a feedback information corresponding to the PDCCH.
  • the carrier when the carrier is configured with the CQG-based HARQ-ACK feedback, the feedback information corresponding to the two transport blocks of each CBG is cascaded, and the feedback information corresponding to the at least one CBG is cascaded according to the CBG order to obtain the PDCCH corresponding information. Feedback.
  • each of the transport blocks is divided into a plurality of CBGs, and when the cascading is performed, the feedback information corresponding to the CBGs of the corresponding positions in the feedback information corresponding to the two transport blocks is cascaded, and then, The feedback information corresponding to the CBG after the cascading is completed, and the feedback information corresponding to the CBG after the cascading is cascaded according to the CBG division order, and a feedback information corresponding to the PDCCH is obtained.
  • the determination of the feedback codebook information of one PDCCH detection opportunity of one carrier may be performed according to the PDCCH ordering.
  • the method for determining the PDCCH ordering manner may adopt one of the following manners. :
  • the mode C1 if the number of the first PDCCH is the number of control information resource sets configured in one PDCCH detection opportunity of one carrier, determining the order of the PDCCH according to the identification information of the control information resource set corresponding to the PDCCH;
  • the number of the first PDCCH is the number of control information resource sets configured in one PDCCH detection opportunity of one carrier, and at most one PDCCH is transmitted in each control information resource set, according to the identification information of the control information resource set
  • the order of the PDCCH may be determined.
  • the identifier information of the control information resource set may be a control information resource set ID.
  • the mode C2 if the number of the first PDCCH is the sum of the number of search spaces configured to transmit the PDCCH that needs to perform HARQ-ACK feedback in the at least one control information resource set of one PDCCH detection opportunity of one carrier, according to the control corresponding to the PDCCH
  • the identification information of the information resource set and the identification information of the search space determine the order of the PDCCH;
  • the first PDCCH number is the sum of the number of search spaces configured for transmitting the PDCCH that needs to perform HARQ-ACK feedback
  • at least one of the control information resource sets in one PDCCH detection opportunity of one carrier each search A maximum of one PDCCH is transmitted in the space, and the PDCCH is determined according to the identification information of the control information resource set corresponding to the PDCCH (for example, the control information resource set ID) and the identification information of the search space (for example, the search space ID), for example, within each control information resource set, the PDCCHs in the plurality of control information resource sets are sorted according to different control search space IDs corresponding to the PDCCH; and then the PDCCHs in the plurality of control information resource sets are sorted in order from small to large.
  • the PDCCH order is determined according to the PDCCH candidate order in the search space; then, within each control information resource set, sorting according to different search space IDs corresponding to the PDCCH; and then multiple control information
  • the PDCCHs within the resource set are sorted in order from the smallest to the largest of the control information resource set IDs.
  • the mode C4 if the first PDCCH number is the sum of the number of CCEs included in the control information resource set in one PDCCH detection opportunity of one carrier, according to the identification information of the control information resource set corresponding to the PDCCH and the control information resource set Sorting the identification information of the CCE to determine the order of the PDCCH;
  • the PDCCH order is determined according to the CCE identification information (for example, the CCE ID) in the control information resource set; and then the PDCCH within the multiple control information resource sets is followed by the control information resource set.
  • the IDs are sorted in ascending order.
  • the mode C5 if the number of the first PDCCHs transmitted in one PDCCH detection opportunity of one carrier configured by the base station is greater than 1, according to the PDCCH ordering indication information added in the downlink control information (DCI), the order of the PDCCH ordering information is changed from small to large. , determining the ordering of the PDCCH;
  • DCI downlink control information
  • the PDCCH feedback information corresponding to the PDCCH is not detected.
  • the location fills in feedback information for non-acknowledgement (NACK) or discontinuous transmission (DTX).
  • NACK non-acknowledgement
  • DTX discontinuous transmission
  • the base station configures the terminal to use the semi-static codebook scheme for feedback, and the configuration terminal needs to receive one transport block on the carrier A, configure the CBG size on the carrier A to be 2, and configure the control information resource of the terminal in a PDCCH transmission opportunity on the carrier A.
  • HARQ-ACK information The corresponding three PDCCHs are transmitted within different CORSETs. As shown in FIG. 3, the PDCCH sequence is determined according to the CORSET ID. The PDCCH 1 is transmitted in CORSET 0, and the PDCCH 2 is transmitted in CORSET 1. The transmission in CORSET 2 is PDCCH3.
  • the HARQ-ACK feedback information is generated for each PDSCH scheduled by the PDCCH, and then the corresponding feedback information is cascaded according to the PDCCH sequence. As shown in FIG. 4, a total of 6 HARQ-ACK feedback bits are obtained, where bit 0 and bit 1 are obtained.
  • bits 2 and 3 correspond to two CBGs of the PDSCH scheduled by the PDCCH transmitted in CORSET 1
  • bits 4 and 5 correspond to the PDCCH scheduling transmitted in CORSET2 Two CBGs of PDSCH.
  • the configuration carrier A does not use the CBG-based HARQ-ACK feedback, and configures the terminal to have a PDCCH transmission opportunity on carrier A.
  • the number of CORSETs in the two is 2, and the number of search spaces in each CORSET is 2.
  • the maximum number of PDCCHs that the terminal can receive in a PDCCH transmission opportunity on the carrier A is 4, and the terminal performs a PDCCH on the carrier A.
  • the corresponding four PDCCHs are respectively transmitted in different search spaces. As shown in FIG.
  • the PDCCH order is determined according to the CORSET ID and the search space order, and PDCCH1 is transmitted in the first search space of CORSET0.
  • PDCCH2 is transmitted in the second search space of CORSET0,
  • PDCCH3 is transmitted in the first search space of CORSET1, and
  • PDCCH4 is transmitted in the second search space of CORSET1, assuming that the terminal does not detect the CORSET1
  • the PDCCH transmitted in the first search space, the terminal still transmits the PDCCH number transmitted in the second search space of CORSET1 to 4.
  • the terminal obtains a total of 8 HARQ-ACK feedback bits, where bit 0 and bits 1 corresponds to two transport blocks (TB) of the PDSCH scheduled by the PDCCH in the first search space of CORSET 0, and bits 2 and 3 correspond to two TBs of the PDSCH scheduled by the PDCCH in the second search space of CORSET 0, Bits 4 and 5 correspond to two TBs of the PDSCH scheduled by the PDCCH in the first search space of CORSET1. Since the terminal does not detect the PDCCH in this search space, the terminal generates two placeholder bits NACK/DTX, bit 6 And bit 7 corresponds to two TBs of the PDSCH scheduled by the PDCCH in the second search space of CORSET 1.
  • the base station configures the terminal to use the semi-static codebook scheme for feedback, and the configuration terminal needs to receive two transport blocks on carrier A.
  • the configuration carrier A does not use the CBG-based HARQ-ACK feedback, and configures the terminal to have a PDCCH transmission opportunity on carrier A.
  • the ordering of the PDCCHs transmitted in the opportunity is detected. As shown in FIG.
  • the PDCCH number transmitted in CORSET 0 and having a smaller CCE index is 00
  • the PDCCH number transmitted in CORSET 0 and having a larger CCE index is 01
  • transmitted in CORSET 1 and has The PDCCH number of the smaller CCE index is 10
  • the PDCCH number with the larger CCE index transmitted in CORSET 0 is 11.
  • the terminal Assuming that the terminal does not receive the PDCCH with a smaller CCE index in the CORSET 1, the terminal generates HARQ-ACK feedback information for the PDSCH scheduled for each received PDCCH, and then cascades the corresponding feedback information according to the PDCCH ordering. NACK/DTX is generated at the position where the PDCCH is not received. As shown in FIG.
  • bit 0 and bit 1 correspond to two TBs of the PDSCH scheduled by the PDCCH numbered 00
  • bit 2 and Bit 3 corresponds to two TBs of the PDSCH scheduled by the PDCCH numbered 01
  • bits 4 and 5 are NACK/DTX
  • bits 6 and 7 correspond to two TBs of the PDSCH scheduled by the PDCCH numbered 11.
  • the feedback codebook determining method in the embodiment of the present disclosure considers that one PDCCH detection opportunity is transmitted in the PDCCH detection opportunity to transmit more than one downlink data transmission for scheduling different time slots or different lengths in the same time slot.
  • the correct feedback codebook is generated to ensure the system transmission performance and ensure the reliability of the network communication.
  • an embodiment of the present disclosure provides a feedback codebook determining apparatus 90, including:
  • the obtaining module 91 is configured to acquire a first PDCCH quantity that is transmitted in a physical downlink control channel PDCCH detection opportunity of one carrier;
  • a first determining module 92 configured to determine, according to the first PDCCH quantity, a length of target feedback information of one PDCCH detection opportunity of one carrier;
  • the second determining module 93 is configured to determine the feedback codebook information according to the length of the target feedback information.
  • the obtaining module 91 is configured to perform one of the following ways:
  • the first PDCCH number is determined according to the PDCCH detection opportunity period.
  • the first PDCCH number is determined by the sum of the number of PDCCH candidate sets corresponding to the search space that needs to perform HARQ-ACK feedback configured in at least one control information resource set of one carrier of one carrier
  • the PDCCH corresponding to the search space that needs to perform HARQ-ACK feedback is scrambled by the cell radio network temporary identifier or the semi-persistent scheduling radio network temporary identifier.
  • the determining the first PDCCH quantity according to the PDCCH detection opportunity period includes one of the following manners:
  • the first PDCCH number is determined according to the PDCCH detection opportunity period and the physical downlink shared channel PDSCH resource allocation information configured by the radio resource control.
  • the first PDCCH quantity is an integer greater than or equal to 1 and less than or equal to 4.
  • the first determining module 92 is configured to:
  • N A1 ⁇ A2 ⁇ A3;
  • N is the length of the target feedback information of one PDCCH detection opportunity of one carrier;
  • A1 is the number of first PDCCHs transmitted in one PDCCH detection opportunity of one carrier;
  • A2 is the number of transport blocks configured by the carrier;
  • A3 is a carrier configured The number of maximum code block groups CBG.
  • the second determining module 93 includes:
  • a first determining unit configured to determine feedback information of each PDCCH in one PDCCH detection opportunity of one carrier
  • a second determining unit configured to determine, according to the order of the PDCCH, the feedback information of each PDCCH according to the length of the target feedback information, and determine feedback codebook information of one PDCCH detection opportunity of one carrier.
  • the first determining unit is configured to perform one of the following ways:
  • the one-bit feedback information is determined for each of the transport blocks.
  • the feedback information corresponding to the at least one transport block is cascaded according to the order of the transport block to obtain a corresponding PDCCH.
  • the feedback information corresponding to the at least one CBG is cascaded in the order of the CBG to obtain the feedback information corresponding to the transport block, and for each PDCCH, the feedback corresponding to the at least one transport block is used.
  • the information is cascaded according to the order of the transport block to obtain feedback information corresponding to the PDCCH;
  • the feedback information corresponding to the two transport blocks is concatenated in the order of the CBGs to obtain the feedback information corresponding to the PDCCH.
  • the determining manner of the ordering of the PDCCH includes one of the following manners:
  • the number of the first PDCCH is the number of control information resource sets configured in one PDCCH detection opportunity of one carrier, determining the order of the PDCCH according to the identification information of the control information resource set corresponding to the PDCCH;
  • the number of the first PDCCH is the sum of the number of search spaces configured to transmit the PDCCH that needs to perform HARQ-ACK feedback in the at least one control information resource set of one PDCCH detection opportunity of one carrier, according to the control information resource set corresponding to the PDCCH Identification information of the search space and identification information of the search space, determining the order of the PDCCH;
  • the first PDCCH number is the sum of the number of PDCCH candidate sets corresponding to the search space that needs to perform HARQ-ACK feedback configured in at least one control information resource set of one PDCCH detection opportunity of one carrier, according to the control information resource set corresponding to the PDCCH Identification information, identification information of the search space, and PDCCH candidate order in the search space, determining the order of the PDCCH;
  • the number of the first PDCCH is the sum of the number of CCEs included in the control information resource set of one PDCCH detection opportunity of one carrier, the identification information of the control information resource set corresponding to the PDCCH and the identifier of the CCE in the control information resource set Sorting information to determine the ordering of PDCCHs;
  • the PDCCH ordering information is determined according to the PDCCH ordering indication information added in the downlink control information, and the PDCCH ordering is determined according to the order of the PDCCH ordering information from small to large.
  • the feedback codebook determining apparatus further includes:
  • a padding module configured to: when the number of PDCCHs is less than the number of the first PDCCH, the feedback information of the PDCCH feedback information corresponding to the PDCCH is not filled with non-acknowledgment or discontinuous transmission.
  • the feedback codebook determining apparatus embodiment is a feedback codebook determining apparatus corresponding to the foregoing method embodiment, and all implementation manners in the foregoing method embodiments are applicable to the embodiment of the feedback codebook determining apparatus. Can also achieve the same technical effect.
  • an embodiment of the present disclosure further provides a feedback codebook determining apparatus 100, including a processor 101, a transceiver 102, a memory 103, and being stored on the memory 103 and operable on the processor 101.
  • the computer program is connected to the processor 101 and the memory 103 through a bus interface, wherein the processor 101 is configured to read a program in the memory and perform the following process:
  • the feedback codebook information is determined according to the length of the target feedback information.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 101 and various circuits of memory represented by memory 103.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 102 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1010 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 101 is responsible for managing the bus architecture and general processing, and the memory 103 can store data used by the processor 101 in performing operations.
  • the processor implements one of the following steps when executing the computer program:
  • the first PDCCH number is determined according to the PDCCH detection opportunity period.
  • the first PDCCH number is determined by the sum of the number of PDCCH candidate sets corresponding to the search space that needs to perform HARQ-ACK feedback configured in at least one control information resource set of one carrier of one carrier
  • the PDCCH corresponding to the search space that needs to perform HARQ-ACK feedback is scrambled by the cell radio network temporary identifier or the semi-persistent scheduling radio network temporary identifier.
  • the processor implements one of the following steps when executing the computer program:
  • the first PDCCH number is determined according to the PDCCH detection opportunity period and the physical downlink shared channel PDSCH resource allocation information configured by the radio resource control.
  • the first PDCCH number is an integer greater than or equal to 1 and less than or equal to 4.
  • the processor implements the following steps when executing the computer program:
  • N A1 ⁇ A2 ⁇ A3;
  • N is the length of the target feedback information of one PDCCH detection opportunity of one carrier;
  • A1 is the number of first PDCCHs transmitted in one PDCCH detection opportunity of one carrier;
  • A2 is the number of transport blocks configured by the carrier;
  • A3 is a carrier configured The number of maximum code block groups CBG.
  • the processor implements the following steps when executing the computer program:
  • the feedback information of each PDCCH is concatenated according to the length of the target feedback information, and the feedback codebook information of one PDCCH detection opportunity of one carrier is determined.
  • the processor implements one of the following steps when executing the computer program:
  • the one-bit feedback information is determined for each of the transport blocks.
  • the feedback information corresponding to the at least one transport block is cascaded according to the order of the transport block to obtain a corresponding PDCCH.
  • the feedback information corresponding to the at least one CBG is cascaded in the order of the CBG to obtain the feedback information corresponding to the transport block, and for each PDCCH, the feedback corresponding to the at least one transport block is used.
  • the information is cascaded according to the order of the transport block to obtain feedback information corresponding to the PDCCH;
  • the feedback information corresponding to the two transport blocks is concatenated in the order of the CBGs to obtain the feedback information corresponding to the PDCCH.
  • the processor when performing the determining of the ordering of the PDCCH, implements one of the following steps when executing the computer program:
  • the number of the first PDCCH is the number of control information resource sets configured in one PDCCH detection opportunity of one carrier, determining the order of the PDCCH according to the identification information of the control information resource set corresponding to the PDCCH;
  • the number of the first PDCCH is the sum of the number of search spaces configured to transmit the PDCCH that needs to perform HARQ-ACK feedback in the at least one control information resource set of one PDCCH detection opportunity of one carrier, according to the control information resource set corresponding to the PDCCH Identification information of the search space and identification information of the search space, determining the order of the PDCCH;
  • the first PDCCH number is the sum of the number of PDCCH candidate sets corresponding to the search space that needs to perform HARQ-ACK feedback configured in at least one control information resource set of one PDCCH detection opportunity of one carrier, according to the control information resource set corresponding to the PDCCH Identification information, identification information of the search space, and PDCCH candidate order in the search space, determining the order of the PDCCH;
  • the number of the first PDCCH is the sum of the number of CCEs included in the control information resource set of one PDCCH detection opportunity of one carrier, the identification information of the control information resource set corresponding to the PDCCH and the identifier of the CCE in the control information resource set Sorting information to determine the ordering of PDCCHs;
  • the PDCCH ordering information is determined according to the PDCCH ordering indication information added in the downlink control information, and the PDCCH ordering is determined according to the order of the PDCCH ordering information from small to large.
  • the processor implements the following steps when executing the computer program:
  • the feedback information of the PDCCH feedback information corresponding to the PDCCH is not filled with non-acknowledgment or non-continuous transmission feedback information.
  • the feedback codebook determining apparatus of the embodiment of the present disclosure determines the length of the target feedback information of one PDCCH detection opportunity of one carrier according to the first PDCCH number transmitted in one PDCCH detection opportunity of one carrier, and then according to the target feedback information according to the target The length determines the feedback codebook information, so that a relatively accurate semi-static feedback codebook can be generated, which ensures the transmission performance of the system and improves the reliability of network communication.
  • the embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement the step of the feedback codebook determining method applied to the feedback codebook determining device.
  • the base station may be a Global System of Mobile communication (GSM) or a Base Transceiver Station (BTS) in Code Division Multiple Access (CDMA), or may be a wideband code.
  • GSM Global System of Mobile communication
  • BTS Base Transceiver Station
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • the base station or the like in the network is not limited herein.

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Abstract

La présente invention concerne le domaine technique des communications. L'invention concerne un procédé et un dispositif de détermination de livre de codes de rétroaction. Le procédé de détermination de livre de codes de rétroaction consiste à : acquérir un premier nombre de canaux de commande de liaison descendante physique (PDCCH) transmis dans une opportunité de détection de PDCCH d'une porteuse ; déterminer une longueur d'informations de rétroaction cible d'une opportunité de détection de PDCCH d'une porteuse selon le premier nombre de PDCCH ; et déterminer des informations de livre de codes de rétroaction en fonction de la longueur des informations de rétroaction cible.
PCT/CN2019/073164 2018-02-08 2019-01-25 Procédé et dispositif de détermination de livre de codes de rétroaction WO2019154126A1 (fr)

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