WO2016161652A1 - Procédé de transmission de message de réponse à une demande de répétition automatique hybride, équipement utilisateur et station de base - Google Patents

Procédé de transmission de message de réponse à une demande de répétition automatique hybride, équipement utilisateur et station de base Download PDF

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Publication number
WO2016161652A1
WO2016161652A1 PCT/CN2015/076366 CN2015076366W WO2016161652A1 WO 2016161652 A1 WO2016161652 A1 WO 2016161652A1 CN 2015076366 W CN2015076366 W CN 2015076366W WO 2016161652 A1 WO2016161652 A1 WO 2016161652A1
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carrier
downlink
information
downlink control
control information
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PCT/CN2015/076366
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English (en)
Chinese (zh)
Inventor
吕永霞
官磊
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华为技术有限公司
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Priority to PCT/CN2015/076366 priority Critical patent/WO2016161652A1/fr
Priority to CN201580071557.7A priority patent/CN107113119A/zh
Publication of WO2016161652A1 publication Critical patent/WO2016161652A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a method, a user equipment, and a base station for transmitting a hybrid automatic retransmission response message.
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • 3GPP 3rd Generation Partnership Project
  • OFDM Orthogonal Frequency Division Multiplexing
  • MIMO Multi-Input & Multi-Output
  • the downlink and uplink of the LTE system are based on Orthogonal Frequency Division Multiplexing Access (OFDMA) and Single Carrier-Frequency Division Multiplexing Access (SC-FDMA).
  • OFDM Orthogonal Frequency Division Multiplexing Access
  • SC-FDMA Single Carrier-Frequency Division Multiplexing Access
  • the frequency resource is divided into OFDM or SC-FDMA symbols (hereinafter referred to as time domain symbols) in the time domain dimension and subcarriers in the frequency domain dimension, and the smallest resource granularity is called a Resource Element (RE), that is, Represents a time domain symbol on the time domain and a time-frequency grid consisting of one subcarrier on the frequency domain.
  • RE Resource Element
  • the transmission of the service in the LTE system is based on an Evolved NodeB (eNB).
  • eNB Evolved NodeB
  • the basic time unit of the scheduling is one subframe, and one subframe includes multiple time domain symbols.
  • the specific scheduling process is that the base station sends a control channel, such as a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (EPDCCH), which can carry a physical downlink shared channel (Physical). Downlink Shared Channel (PDSCH) or Scheduling Information of Physical Uplink Shared Channel (PUSCH), which includes control information such as resource allocation information and adjustment coding mode.
  • PDSCH physical downlink control channel
  • PUSCH Scheduling Information of Physical Uplink Shared Channel
  • a user equipment User Equipment, UE for short
  • the scheduling information carried is used for receiving the downlink data channel or transmitting the uplink data channel.
  • LTE supports two types of duplex modes: Frequency Division Multiplexing (FDD) and Time Duplexing Division (TDD).
  • FDD Frequency Division Multiplexing
  • TDD Time Duplexing Division
  • the downlink and uplink are transmitted on different carriers.
  • the uplink and the downlink are transmitted at different times of the same carrier, and specifically include a downlink subframe, an uplink subframe, and a special subframe on one carrier.
  • LTE currently supports 7 different TDD uplink and downlink configurations.
  • LTE adopts Hybrid Automatic Repeat Request (HARQ) mechanism to implement error detection and error correction.
  • HARQ Hybrid Automatic Repeat Request
  • the UE sends feedback confirmation on the PUCCH.
  • ACK feedback non-acknowledgement
  • NACK feedback non-acknowledgement
  • LTE also supports Carrier Aggregation (CA) technology, in which a base station allocates multiple carriers to one UE to increase the data rate of the UE.
  • CA Carrier Aggregation
  • the UE can separately detect the PDCCH and the corresponding PDSCH for each carrier. The specific detection process of each carrier is similar to the single carrier case.
  • the LTE system supports FDD CA, TDD CA, and FDD+TDD CA.
  • TDD CA For the TDD CA, it is further divided into a TDD CA with the same uplink and downlink configuration and a TDD CA with different uplink and downlink configurations.
  • the PUCCH transmission mode in the CA mode includes two modes: a channel selection mode and a PUCCH format 3, wherein in the channel selection mode, PUCCH format 1a/1b is used for ACK/NACK feedback, but the channel selection mode supports CA of two carriers at most.
  • the PUCCH format 3 mode adopts a transmission structure of DFT-S-OFDM and can support up to 20 ACK/NACK transmissions.
  • TDD-FDD carrier aggregation is taken as an example, where the TDD carrier is the primary carrier, and the uplink and downlink configurations are 5, and the other carriers are FDD carriers.
  • the transmit power of the user equipment is constant and does not follow the number of downlink carriers. Increase and increase, when the number of HARQ-ACKs to be transmitted increases, and the uplink power of the user is limited, the performance of the HARQ-ACK decreases as the number of HARQ-ACKs increases, that is, the downlink data of the user may exist. Support for 32 carriers is received, but the uplink does not feed back the corresponding number of HARQ-ACKs.
  • the embodiment of the present invention provides a method for transmitting a hybrid automatic retransmission response message, a user equipment, and a base station, which implements more downlink carrier aggregation, and overcomes the number of carriers for downlink carrier aggregation, which is limited by the hybrid automatic retransmission of the uplink control channel transmission. A defect in the number of response message bits.
  • an embodiment of the present invention provides a user equipment, including:
  • a receiving module configured to receive radio resource control RRC configuration information sent by the base station, where the RRC configuration information carries carrier group information, where the carrier group information includes a number of each carrier group in the same carrier set and a number of each carrier in each carrier group ;
  • the receiving module is further configured to receive at least one first downlink control information that is sent by the base station, where each first downlink control information carries a downlink allocation index, and at least one of the first downlink control information further carries a downlink allocation total;
  • a processing module configured to generate a first hybrid automatic retransmission response message according to the total downlink allocation, the downlink allocation index of each first downlink control information, and the physical downlink shared channel corresponding to each first downlink control information;
  • a sending module configured to send the hybrid automatic retransmission response message to the base station
  • the total number of downlink downlink allocations is the number of physical downlink shared channels corresponding to downlink control information in the same carrier set, or the number of physical downlink control channels released by downlink semi-persistent scheduling in the same carrier set, or the same carrier set.
  • the carrier includes a primary carrier and at least one secondary carrier, where the primary carrier constitutes one carrier group, and each secondary carrier constitutes at least one carrier group, and the processing is performed.
  • the module is configured to perform compression processing on the first hybrid automatic retransmission response message according to the carrier grouping information to generate a hybrid automatic retransmission response message, including:
  • first downlink control information corresponding to the number of each carrier in each carrier packet according to the carrier group information and performing response information of the physical downlink shared channel corresponding to the first downlink control information in the same carrier group Logic AND operation, generating a second hybrid automatic retransmission response message, where the second hybrid automatic retransmission response message includes response information corresponding to each carrier group;
  • the carrier includes a primary carrier and at least one secondary carrier, each carrier packet does not include the primary carrier, and the processing module is configured to group according to the carrier
  • the information is compressed by the first hybrid automatic retransmission response message to generate a hybrid automatic retransmission response message, including:
  • Sorting according to the number of each carrier group, the response information corresponding to each carrier group to obtain a fourth hybrid automatic retransmission response message, according to the response information of the physical downlink shared channel corresponding to the primary carrier, and the fourth The hybrid automatic repeat response message generates a hybrid automatic repeat response message.
  • the processing module is configured to The downlink hybrid allocation total, the downlink allocation index of each first downlink control information, and the physical downlink shared channel corresponding to the first downlink control information, generate a first hybrid automatic retransmission response message, including:
  • the response information of the physical downlink shared channel corresponding to the second downlink control information is a non-acknowledgment NACK;
  • the first hybrid automatic retransmission response message According to the response information of the physical downlink shared channel corresponding to the first downlink control information and the response information of the physical downlink shared channel corresponding to the second downlink control information, where the first a sequence of discharging the response information of the physical downlink shared channel corresponding to the first downlink control information and the response sequence of the response information of the physical downlink shared channel corresponding to the second downlink control information in the hybrid automatic retransmission response message, and the first The downlink control information and the downlink allocation index of the second downlink control information are in the same order.
  • an embodiment of the present invention provides a base station, including:
  • a sending module configured to send radio resource control RRC configuration information to the user equipment, where the RRC configuration information carries carrier group information, where the carrier group information includes a number of each carrier group in the same carrier set and a number of each carrier in each carrier group ;
  • the sending module is further configured to send, to the user equipment, at least one first downlink control information, where each first downlink control information carries a downlink allocation index, and at least one of the first downlink control information further carries a downlink allocation total;
  • a receiving module configured to receive, by the user equipment, a hybrid automatic retransmission response message, where the hybrid automatic retransmission response message is a downlink allocation index of the user equipment according to the total number of downlink allocations and each first downlink control information, Generating the physical downlink shared channel corresponding to each of the first downlink control information and the carrier group information;
  • the total number of downlink downlink allocations is the number of physical downlink shared channels corresponding to downlink control information in the same carrier set, or the number of physical downlink control channels released by downlink semi-persistent scheduling in the same carrier set, or The sum of the number of physical downlink shared channels corresponding to the downlink control information and the number of physical downlink control channels released by the downlink semi-persistent scheduling in the same carrier set.
  • the hybrid automatic retransmission message includes response information corresponding to each carrier group, where the carrier packet includes a packet including only a primary carrier;
  • the base station further includes a processing module, configured to retransmit each carrier in the carrier group if the response information corresponding to the carrier group is not acknowledged.
  • the hybrid automatic retransmission message includes response information of a physical downlink shared channel corresponding to the primary carrier and response information corresponding to each carrier group;
  • the base station further includes a processing module, configured to retransmit each carrier in the carrier group if the response information corresponding to the carrier group is not acknowledged.
  • an embodiment of the present invention provides a method for transmitting a hybrid automatic retransmission response message (HARQ-ACK), including:
  • Radio resource control RRC configuration information sent by the base station where the RRC configuration information carries carrier group information, where the carrier group information includes a number of each carrier group in the same carrier set and The number of each carrier in each carrier group;
  • each first downlink control information carries a downlink allocation index, and at least one of the first downlink control information further carries a total number of downlink allocations;
  • the total number of downlink downlink allocations is the number of physical downlink shared channels corresponding to downlink control information in the same carrier set, or the number of physical downlink control channels released by downlink semi-persistent scheduling in the same carrier set, or the same carrier set.
  • the carrier includes a primary carrier and at least one secondary carrier, where the primary carrier constitutes one carrier group, and each secondary carrier constitutes at least one carrier group,
  • the carrier grouping information is compressed by the first hybrid automatic retransmission response message to generate a hybrid automatic retransmission response message, including:
  • first downlink control information corresponding to the number of each carrier in each carrier packet according to the carrier group information and performing response information of the physical downlink shared channel corresponding to the first downlink control information in the same carrier group Logic AND operation, generating a second hybrid automatic retransmission response message, where the second hybrid automatic retransmission response message includes response information corresponding to each carrier group;
  • the response information corresponding to each carrier group is sorted according to the number of each carrier group, and a hybrid automatic repeat response message is generated.
  • the carrier includes a primary carrier and at least one secondary carrier, and each carrier packet does not include the primary carrier, and the first The hybrid automatic retransmission response message is compressed to generate a hybrid automatic retransmission response message, including:
  • the acknowledgment information of the row shared channel is logically operated to generate a third hybrid automatic retransmission response message, where the third hybrid automatic retransmission response message includes response information corresponding to each carrier group;
  • Sorting according to the number of each carrier group, the response information corresponding to each carrier group to obtain a fourth hybrid automatic retransmission response message, according to the response information of the physical downlink shared channel corresponding to the primary carrier, and the fourth The hybrid automatic repeat response message generates a hybrid automatic repeat response message.
  • the first hybrid automatic retransmission response message is generated by the total number, the downlink allocation index of each first downlink control information, and the physical downlink shared channel corresponding to the first downlink control information, including:
  • the response information of the physical downlink shared channel corresponding to the second downlink control information is a non-acknowledgment NACK;
  • the first hybrid automatic retransmission response message According to the response information of the physical downlink shared channel corresponding to the first downlink control information and the response information of the physical downlink shared channel corresponding to the second downlink control information, where the first a sequence of discharging the response information of the physical downlink shared channel corresponding to the first downlink control information and the response sequence of the response information of the physical downlink shared channel corresponding to the second downlink control information in the hybrid automatic retransmission response message, and the first The downlink control information and the downlink allocation index of the second downlink control information are in the same order.
  • a fourth aspect of the present invention provides a method for transmitting a hybrid automatic retransmission response message (HARQ-ACK), including:
  • RRC configuration information carries carrier group information, where the carrier group information includes a number of each carrier group in the same carrier set and a number of each carrier in each carrier group;
  • each of the first downlink control information carries a downlink allocation index, and at least one of the first downlink control information further carries a total number of downlink allocations;
  • a hybrid automatic retransmission response message is a downlink allocation index of the user equipment according to the total downlink allocation, each first downlink control information, and the first a physical downlink shared channel corresponding to the downlink control information and the carrier group information generated by the downlink control information;
  • the total number of downlink downlink allocations is the number of physical downlink shared channels corresponding to downlink control information in the same carrier set, or the number of physical downlink control channels released by downlink semi-persistent scheduling in the same carrier set, or The sum of the number of physical downlink shared channels corresponding to the downlink control information and the number of physical downlink control channels released by the downlink semi-persistent scheduling in the same carrier set.
  • the hybrid automatic retransmission message includes response information corresponding to each carrier group, where the carrier packet includes a packet including only a primary carrier;
  • the method further includes retransmitting each carrier in the carrier group if the response information corresponding to the carrier group is not acknowledged.
  • the hybrid automatic retransmission message includes response information of a physical downlink shared channel corresponding to the primary carrier and response information corresponding to each carrier group;
  • the method further includes retransmitting each carrier in the carrier group if the response information corresponding to the carrier group is not acknowledged.
  • the method for transmitting the automatic retransmission response message, the user equipment, and the base station by receiving the carrier group information and the at least one first downlink control information sent by the base station, thereby obtaining the total downlink allocation and the first downlink control information.
  • a downlink allocation index which generates a first hybrid automatic retransmission response message according to the total downlink allocation, the downlink allocation index, and the physical downlink shared channel corresponding to each first downlink control information, and further automatically weights the first hybrid according to the carrier group information.
  • the response message is compressed to generate a hybrid automatic retransmission response message.
  • the codebook size of the hybrid automatic retransmission response message fed back to the base station can be effectively reduced. Therefore, more downlink carrier aggregation can be implemented, and the number of carriers that overcome the downlink carrier aggregation is limited by the defect that the uplink control channel transmits the number of hybrid automatic retransmission acknowledgement message bits.
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention.
  • Embodiment 1 of a base station according to the present invention is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • Embodiment 3 is a flowchart of Embodiment 1 of a method for transmitting a hybrid automatic retransmission response message HARQ-ACK according to the present invention
  • FIG. 4 is a flowchart of Embodiment 2 of a method for transmitting a hybrid automatic retransmission response message HARQ-ACK according to the present invention.
  • the embodiments of the present invention are mainly based on a carrier aggregation architecture.
  • the carrier is also referred to as a serving cell.
  • the carrier in the present invention may be referred to as a serving cell. Carrier.
  • FIG. 1 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention.
  • the apparatus in this embodiment may include: a receiving module 11 , a processing module 12 , and a sending module 13 , where the receiving module 11 is configured to receive a base station and send Radio Resource Control (RRC) configuration information, the RRC configuration information carries carrier group information, where the carrier group information includes a number of each carrier group in the same carrier set and a number of each carrier in each carrier group, The receiving module 11 is further configured to receive at least one first downlink control information that is sent by the base station, where each first downlink control information carries a downlink allocation index, and at least one of the first downlink control information is further Carrying the total number of downlink allocations, the processing module 12 is configured to generate a first hybrid automatic weight according to the total downlink allocation, the downlink allocation index of each first downlink control information, and the physical downlink shared channel corresponding to each first downlink control information.
  • RRC Radio Resource Control
  • the first hybrid automatic retransmission response message includes response information of a physical downlink shared channel corresponding to each first downlink control information, and performing, by using the carrier grouping information, the first hybrid automatic retransmission response message
  • the compression process generates a hybrid automatic repeat response message
  • the sending module 13 is configured to send the hybrid automatic repeat response message to the base station.
  • the total number of downlink downlink allocations is the number of physical downlink shared channels corresponding to downlink control information in the same carrier set, or the number of physical downlink control channels released by downlink semi-persistent scheduling in the same carrier set, or the same carrier set.
  • the base station divides a carrier set into a plurality of carrier groups, each carrier group includes at least one carrier, and the base station sends the carrier group information to the user equipment by using RRC configuration information, where the carrier group information includes a number of each carrier group in the carrier set. And the number of the carrier corresponding to the number of each carrier group.
  • the base station configures 16 carriers for the user equipment, and the number of each carrier is (0, 1, 2, ..., 15), and the carrier group information may be specifically (1;0), (2; 1, 2, 3), (3; 4, 5, 6), (4; 7, 8, 9), (5; 10, 11, 12), (6; 14 15), wherein (A; B 1 bib B n ) represents a carrier group, A represents the number of the carrier group, and B 1 across B n represents the number of the carrier in the A carrier group, and thus it can be seen that
  • the carrier set of the above example is divided into six groups.
  • the receiving module of the user equipment further receives at least one first downlink control information that is sent by the base station, where each of the first downlink control information carries a downlink allocation index, where at least one first downlink control information further carries a total downlink allocation, and downlink allocation
  • the index refers to the number of the cumulative number of downlink allocations in the same carrier set.
  • the total number of downlink allocations refers to the total number of downlink assignments of the same carrier set.
  • the user equipment receives the RRC configuration information sent by the base station, and may obtain the carrier group information according to the RRC configuration information, where the user equipment further receives the at least one first downlink control information sent by the base station, and the user equipment receives the first downlink according to the received
  • the control information may be obtained by obtaining a downlink allocation total and a downlink allocation index of each first downlink control information, where the user equipment corresponds to the downlink allocation total, the downlink allocation index of each first downlink control information, and each first downlink control information.
  • the physical hybrid downlink shared channel generates a first hybrid automatic retransmission response message, where the first hybrid automatic retransmission response message includes the same number of response information as the total downlink allocation, and the first hybrid automatic retransmission response message packet
  • the acknowledgment information is specifically ACK or NACK, that is, the total number of ACKs or NACKs in the first hybrid automatic repeat message is the same as the total number of downlink allocations, and the user equipment performs the first hybrid automatic retransmission response message according to the carrier group information.
  • the compression process generates a hybrid automatic repeat response message, and sends the compressed first hybrid automatic repeat response message to the base station.
  • the downlink allocation index and the downlink allocation index of each first downlink control information are obtained by receiving the carrier group information and the at least one first downlink control information that are sent by the base station, according to the total downlink allocation and the downlink allocation.
  • the first hybrid automatic retransmission response message is generated by the index and the physical downlink shared channel corresponding to the first downlink control information, and the first hybrid automatic retransmission response message is compressed according to the carrier group information to generate a hybrid automatic retransmission response message.
  • the hybrid automatic retransmission response message sent to the base station is a compressed message, so that the codebook size of the hybrid automatic retransmission response message fed back to the base station can be effectively reduced, so that more downlink carrier aggregation can be used to overcome
  • the number of carriers for downlink carrier aggregation is limited by the defect that the uplink control channel transmits the number of mixed automatic retransmission acknowledgement message bits.
  • the processing module 12 is specifically configured to perform compression processing on the first hybrid automatic retransmission response message according to the carrier group information to generate a hybrid automatic retransmission response message.
  • compression processing on the first hybrid automatic retransmission response message according to the carrier group information to generate a hybrid automatic retransmission response message.
  • the first carrier includes a primary carrier and at least one secondary carrier, where the primary carrier forms a carrier group, and each secondary carrier constitutes at least one carrier group, that is, the primary carrier is a single carrier group, and the remaining secondary carriers form at least one carrier group. .
  • the processing module 12 is configured to perform a compression process on the first hybrid automatic retransmission response message according to the carrier grouping information to generate a hybrid automatic retransmission response message, where the method may be: acquiring each carrier group according to the carrier group information.
  • the first downlink control information corresponding to the number of each carrier, and logically and responsive to the response information of the physical downlink shared channel corresponding to the first downlink control information in the same carrier group, to generate a second hybrid automatic retransmission a response message
  • the second hybrid automatic retransmission response message includes response information corresponding to each carrier group, and the response information corresponding to each carrier group is sorted according to the number of each carrier group to generate a hybrid automatic retransmission response message.
  • the first hybrid automatic retransmission response message is 101101100, where the number of carriers corresponding to the response information of each bit is 0, 2, 3, 5, 6, 8, 9, 11, 13 respectively.
  • the carrier group information of the first embodiment of the device is further illustrated by the carrier group information.
  • the primary carrier number is 0, which is a group, the carrier number is 2, 3 is a group, the carrier number is 5, 6 is a group, the carrier number is 8, 9 is a group, the carrier And the grouping of the numbers 11 and 13 is performed, and the second hybrid automatic retransmission reply message is generated by performing logical AND operation on the response information of the physical downlink shared channel corresponding to the first downlink control information in the same carrier group.
  • the number of carrier packets corresponding to each bit is 1, 2, 3, 4, 5, respectively, and the hybrid automatic generation generated by sorting the second hybrid automatic retransmission response message according to the number of the carrier grouping
  • the retransmission reply message is 10010. It should be noted that the sorting may be in ascending order, or may be descending, or may be sorted by a certain rule, which is not limited thereto.
  • the carrier includes a primary carrier and at least one secondary carrier, and each carrier packet does not include the primary carrier, that is, the carrier packet does not include the primary carrier. That is, the primary carrier is not included in the carrier packet.
  • the processing module 12 is configured to perform a compression process on the first hybrid automatic retransmission response message according to the carrier grouping information to generate a hybrid automatic retransmission response message, where the method may be: acquiring each carrier group according to the carrier group information.
  • the first downlink control information corresponding to the number of each carrier, and logically and responsive to the response information of the physical downlink shared channel corresponding to the first downlink control information in the same carrier group, to generate a third hybrid automatic retransmission a response message
  • the third hybrid automatic retransmission response message includes response information corresponding to each carrier group; and the response information corresponding to each carrier group is sorted according to the number of each carrier group to obtain a fourth hybrid automatic retransmission response
  • generating a hybrid automatic repeat response message according to the response information of the physical downlink shared channel corresponding to the first downlink control information corresponding to the primary carrier and the fourth hybrid automatic repeat response message.
  • the first hybrid automatic retransmission response message is 101101100, and the number of the carrier corresponding to the response information of each bit is 0, 2, 3, 5, 6, 8, 9, 11, 13 respectively.
  • the primary carrier number is 0, the corresponding response information is 1, and the carrier group information is (1; 1, 2, 3), (2; 4, 5, 6), (3; 7, 8, 9), ( 4; 10, 11, 12), (5; 14, 15) for example, according to the carrier grouping information, the primary carrier is not counted in the carrier group, the carrier number is 2, 3 is a group, the carrier number is 5, 6 is a group, the carrier number is 8 and 9 is a group, and the carrier number is 11 and 13 is a group, then the physical downlink corresponding to the first downlink control information in the same carrier group
  • the response information of the shared channel is logically AND operated to generate a third hybrid automatic repeat response message, that is, 0, 0, 1, 0, and the number of carrier packets corresponding to each bit is 1, 2, 3, and 4, respectively, according to carrier grouping.
  • the fourth hybrid automatic retransmission response message generated after the number is sorted by the third hybrid automatic retransmission response message is 10010. It should be noted that the sorting can Ascending order can also be sorted in descending order, or it can be sorted by certain rules, which is not limited here. And generating a hybrid automatic retransmission response message according to the response information 1 of the physical downlink shared channel corresponding to the primary carrier and the fourth hybrid automatic retransmission response message, where the hybrid automatic retransmission response message is 10010.
  • the processing module 12 of the user equipment is configured to use the downlink allocation total and the downlink allocation index of each first downlink control information. And generating, by the physical downlink shared channel corresponding to the first downlink control information, a first hybrid automatic retransmission response message, where the decoding may be performed according to the decoding of the physical downlink shared channel corresponding to each first downlink control information.
  • the acknowledgment information of the physical downlink shared channel and the physical downlink corresponding to the second downlink control information The response information of the channel generates the first hybrid automatic retransmission response message, the response information of the physical downlink shared channel corresponding to each first downlink control information in the first hybrid automatic retransmission response message, and the second downlink control
  • the order of the response information of the physical downlink shared channel corresponding to the information is the same as the order of the downlink allocation indexes of the first downlink control information and the second downlink control information.
  • the first hybrid automatic retransmission response message (the first HARQ-ACK), the user equipment determines whether there is a PDCCH miss check according to the total downlink allocation and the downlink allocation index, and the first downlink control information and the second downlink are required to be described.
  • the control information is the downlink control information DCI.
  • the first and second are only used to distinguish the downlink control information that is normally received and missed, that is, the second downlink control information is used to indicate the downlink control information that is missed.
  • the user equipment receives 5 DCIs, and the DAI of each DCI is 3, 1, 4, 6, and 7, respectively, and the total number of downlink allocations received is 9, first, according to the PDSCH corresponding to the received DCI. If the decoding is correct or not, the response information is generated. If the decoding is correct, the response information is 1 and then the DAI of the received DCI is sorted. The sorting result is 1, 3, 4, 6, and 7. The HARQ-ACK is 11111, and the HARQ-ACK at this time does not include the response information of the missed detection information.
  • the method according to the embodiment of the present invention can determine that the downlink allocation index is 2, 5, 8, and 9 according to the ranking result and the total number of downlink allocations 9.
  • the first HARQ-ACK is generated according to the response information of the downlink control information that is not missed and the downlink control information that is missed, the first HARQ - ACK is 101101100. It can be understood from the above example that the PDCCH miss detection can be judged by the total number of downlink allocations, and the location of the specific missed detection can be determined according to the DAI.
  • the carrier grouping information is generated by the base station according to the downlink traffic volume and the data carrying capacity of the physical uplink control channel.
  • the user equipment can determine the downlink control information of the missed detection by using the received downlink allocation total and the downlink allocation index, so that the number of mixed automatic retransmission message bits between the base station and the base station can be ensured to be consistent, and further sent according to the base station.
  • the carrier group information can also flexibly control the codebook size of the hybrid automatic repeat message sent to the base station.
  • all the carriers configured for the user equipment are divided into several carrier groups, and the HARQ-ACK corresponding to each carrier of the same carrier group can be bundled (logical and operation), and between carriers between groups.
  • the HARQ-ACK cannot be bundled, the primary carrier is not bundled with any subcarriers, or the primary carrier itself is a group.
  • the primary carrier is not bundled with the HARQ-ACK of other carriers because the primary carrier transmission is important control information of the user equipment. If the HARQ-ACK is bundled with other carriers, it is likely that the data of other carriers is always translated. The code error causes the HARQ-ACK to be always NACK. According to the logical AND operation, the bundled HARQ-ACK is NACK, then the data of the primary carrier also needs to be retransmitted continuously, and many control information has a certain time window. For example, random access response, timing advance command, etc., resulting in out-of-synchronization, and further may lead to the need for restart, data interruption, affecting the service performance of the user equipment.
  • the HARQ-ACKs in the carrier group can be bundled because the channel quality of some carriers is similar, for example, the interference environment is similar, for example, carriers with strong interference, for example, the carriers of the same carrier band are divided into one group, for example, all are unauthorized.
  • the carrier is divided into a group. For example, all the carriers in a Radio Radio Head (RRH) are divided into one group, so the probability that they are both ACK or NACK is relatively large, so unnecessary retransmission will be less.
  • RRH Radio Radio Head
  • the apparatus in this embodiment may include: a sending module 21 and a receiving module 22, where the sending module 21 is configured to send a radio resource control RRC to a user equipment.
  • the RRC configuration information carries carrier group information, where the carrier group information includes a number of each carrier group in the same carrier set and a number of each carrier in each carrier group, and the sending module 21 is further configured to The user equipment sends at least one downlink control information, each downlink control information carries a downlink allocation index, and at least one of the downlink control information further carries a total number of downlink assignments, and the receiving module 22 is configured to receive the hybrid automatic retransmission response message sent by the user equipment.
  • the hybrid automatic retransmission response message is a physical downlink shared channel corresponding to the downlink allocation index, the downlink allocation index of each first downlink control information, and the physical downlink shared channel corresponding to the first downlink control information, and the Carrier group information generated.
  • the total number of downlink downlink allocations is the number of physical downlink shared channels corresponding to downlink control information in the same carrier set, or the number of physical downlink control channels released by downlink semi-persistent scheduling in the same carrier set, or The sum of the number of physical downlink shared channels corresponding to the downlink control information and the number of physical downlink control channels released by the downlink semi-persistent scheduling in the same carrier set.
  • the hybrid automatic retransmission message includes response information corresponding to each carrier group
  • the carrier packet includes a packet including only a primary carrier
  • the base station may further include a processing module 23, configured to: If the response information is not confirmed, each carrier in the carrier packet is retransmitted.
  • the hybrid automatic retransmission message includes the response information of the physical downlink shared channel corresponding to the primary carrier and the response information corresponding to each carrier packet.
  • the base station may further include a processing module 23, configured to: if the carrier packet corresponds to If the response information is not confirmed, each carrier in the carrier packet is retransmitted.
  • the processing module 23 is further configured to generate the carrier grouping information according to the downlink traffic volume and the data carrying capability of the physical uplink control channel. That is, the base station can adaptively configure the corresponding carrier group according to the channel quality of the downlink carrier and the uplink carrier, thereby implementing flexible control of the codebook size of the hybrid automatic retransmission response message, thereby enabling more downlink carrier aggregation to overcome the carrier of downlink carrier aggregation. The number is limited by the drawback of the uplink control channel.
  • the base station sends each downlink control information to the user equipment, and the downlink control The information carries the downlink allocation total and the downlink allocation index, so that the user equipment can determine the missed PDCCH according to the foregoing information, and the base station further sends carrier group information to the user equipment, thereby implementing flexible control of the codebook size of the hybrid automatic retransmission response message. .
  • FIG. 3 is a flowchart of Embodiment 1 of a method for transmitting a hybrid automatic retransmission response message HARQ-ACK according to the present invention. As shown in FIG. 3, the method in this embodiment may include:
  • Step 101 Receive radio resource control RRC configuration information sent by the base station, where the RRC configuration information carries carrier group information, where the carrier group information includes a number of each carrier group in the same carrier set and a number of each carrier in each carrier group.
  • Step 102 Receive at least one first downlink control information that is sent by the base station, where each first downlink control information carries a downlink allocation index, and at least one of the first downlink control information further carries a total downlink allocation.
  • Step 103 Generate a first hybrid automatic retransmission response message according to the total downlink allocation, the downlink allocation index of each first downlink control information, and the physical downlink shared channel corresponding to each first downlink control information.
  • Step 104 Perform compression processing on the first hybrid automatic retransmission response message according to the carrier group information to generate a hybrid automatic retransmission response message.
  • Step 105 Send the hybrid automatic repeat response message to the base station.
  • the total number of downlink downlink allocations is the number of physical downlink shared channels corresponding to downlink control information in the same carrier set, or the number of physical downlink control channels released by downlink semi-persistent scheduling in the same carrier set, or the same carrier set.
  • the carrier includes a primary carrier and at least one secondary carrier, and the primary carrier constitutes one carrier group, and each of the secondary carriers constitutes at least one carrier group.
  • Step 104 may specifically: obtain each carrier group according to the carrier group information. Corresponding to the first downlink control information corresponding to the number of each carrier, and logically ANDing the response information of the physical downlink shared channel corresponding to the first downlink control information in the same carrier group, to generate a second hybrid automatic repeat response message The second hybrid automatic repeat response message includes response information corresponding to each carrier group, and the response information corresponding to each carrier group is sorted according to the number of each carrier group to generate a hybrid automatic repeat response message.
  • the carrier includes a primary carrier and at least one secondary carrier, and each carrier group does not include the primary carrier.
  • the carrier may be configured to obtain, according to the carrier group information, first downlink control information corresponding to the number of each carrier in each carrier group, and corresponding to the first downlink control information in the same carrier group.
  • the acknowledgment information of the physical downlink shared channel is logically operated to generate a third hybrid automatic retransmission response message, where the third hybrid automatic retransmission response message includes response information corresponding to each carrier group;
  • the response information corresponding to each carrier group is sorted to obtain a fourth hybrid automatic retransmission response message, and hybrid automatic is generated according to the response information of the physical downlink shared channel corresponding to the primary carrier and the fourth hybrid automatic retransmission response message. Retransmit the reply message.
  • the step 103 may be specifically: generating, according to whether the decoding of the physical downlink shared channel corresponding to the first downlink control information is correct, the response information of the physical downlink shared channel corresponding to each first downlink control information;
  • the downlink allocation index of the first downlink control information is sorted to obtain a sorting result, and the second downlink control information is determined according to the sorting result and the total number of downlink allocations, and the downlink allocation index of the second downlink control information is obtained, where
  • the response information of the physical downlink shared channel corresponding to the second downlink control information is a non-acknowledgement NACK; the response information of the physical downlink shared channel corresponding to each first downlink control information and the physical downlink shared channel corresponding to the second downlink control information
  • the response information of the first hybrid automatic retransmission response message, the response information of the physical downlink shared channel and the second downlink control information corresponding to the first downlink control information in the first hybrid automatic retransmission response message The discharge order of the response information of the
  • the method for transmitting the hybrid automatic retransmission response message HARQ-ACK provided in this embodiment is used to complete the processing of the user equipment shown in FIG. 1 , and the implementation principle and technical effects are similar, and details are not described herein again.
  • Embodiment 4 is a flowchart of Embodiment 2 of a method for transmitting a hybrid automatic retransmission response message HARQ-ACK according to the present invention. As shown in FIG. 4, the method in this embodiment may include:
  • Step 201 Send radio resource control RRC configuration information to the user equipment, where the RRC configuration information carries carrier group information, where the carrier group information includes a number of each carrier group in the same carrier set and a number of each carrier in each carrier group.
  • Step 202 Send at least one first downlink control information to the user equipment, where each first downlink control information carries a downlink allocation index, and at least one of the first downlink control information is further carried. The total number of downlink allocations.
  • Step 203 The user equipment is sent to send a hybrid automatic retransmission response message, where the hybrid automatic retransmission response message is the downlink allocation index of the first downlink control information, and the The physical downlink shared channel corresponding to each first downlink control information and the carrier group information are generated.
  • the total number of downlink downlink allocations is the number of physical downlink shared channels corresponding to downlink control information in the same carrier set, or the number of physical downlink control channels released by downlink semi-persistent scheduling in the same carrier set, or The sum of the number of physical downlink shared channels corresponding to the downlink control information and the number of physical downlink control channels released by the downlink semi-persistent scheduling in the same carrier set.
  • the hybrid automatic retransmission message includes response information corresponding to each carrier group, and the carrier packet includes a packet including only a primary carrier.
  • the method further includes: if the response information corresponding to the carrier packet is not acknowledged, Then, each carrier in the carrier packet is retransmitted.
  • the hybrid automatic retransmission message includes response information of a physical downlink shared channel corresponding to the primary carrier and response information corresponding to each carrier group;
  • the method further includes retransmitting each carrier in the carrier group if the response information corresponding to the carrier group is not acknowledged.
  • the method for transmitting the hybrid automatic retransmission response message HARQ-ACK provided in this embodiment is used to complete the processing of the base station shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the receiving module 11 in the embodiment of the present invention may correspond to the receiver of the user equipment, and may also correspond to the transceiver of the user equipment.
  • the sending module 13 may correspond to a transmitter of the user equipment, or may correspond to a transceiver of the user equipment.
  • the processing module 12 may correspond to a processor of the user equipment, where the processor may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or implement an embodiment of the present invention. One or more integrated circuits.
  • the user equipment may further include a memory for storing the instruction code, the processor invoking the instruction code of the memory, and controlling the receiving module 11 and the transmitting module 13 in the embodiment of the present invention to perform the above operations.
  • the sending module 21 in the embodiment of the present invention may correspond to a transmitter of a base station, or may correspond to a transceiver of a base station.
  • the receiving module 22 may correspond to a receiver of the base station, or may correspond to a transceiver of the base station.
  • the processing module 23 can correspond to a processor of the base station, where the processor can be a The CPU, either an ASIC, or one or more integrated circuits implementing embodiments of the present invention.
  • the base station may further include a memory for storing the instruction code, the processor invoking the instruction code of the memory, and controlling the transmitting module 21 and the receiving module 22 in the embodiment of the present invention to perform the above operations.
  • the disclosed apparatus and method may be implemented in other manners.
  • 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, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as the unit 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 purpose of the solution of the embodiment.
  • 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 hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

L'invention concerne un procédé de transmission de message de réponse à une demande de répétition automatique hybride, ainsi qu'un équipement utilisateur et une station de base. Les modes de réalisation de l'invention permettent d'agréger plusieurs porteuses de liaison descendante et de résoudre le problème selon lequel le nombre de porteuses pour l'agrégation des porteuses de liaison descendante est limité par le nombre de bits d'un message de réponse à une demande automatique de répétition hybride transmis par un canal de commande de liaison montante.
PCT/CN2015/076366 2015-04-10 2015-04-10 Procédé de transmission de message de réponse à une demande de répétition automatique hybride, équipement utilisateur et station de base WO2016161652A1 (fr)

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PCT/CN2015/076366 WO2016161652A1 (fr) 2015-04-10 2015-04-10 Procédé de transmission de message de réponse à une demande de répétition automatique hybride, équipement utilisateur et station de base
CN201580071557.7A CN107113119A (zh) 2015-04-10 2015-04-10 混合自动重传应答消息的传输方法、用户设备和基站

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