Method and device for cell group-based hybrid automatic repeat request-acknowledgement report in wireless communications
The application provides a method and device in a node used for wireless communications. A node receives a first information block, and the first information block determines a first search space set; the node monitors a first control channel candidate, and the first control channel candidate belongs to the first search space set; the node transmits a first bit set, the first bit set comprises X bit subsets, and each bit subset comprises a positive integer number of HARQ-ACK bit(s); the X bit subsets are respectively for X cell groups; the first control channel candidate is used for a first serving cell, and the first serving cell belongs to one or multiple cell groups among the X cell groups; the first control channel candidate is used to determine a first identity. The present application guarantees the transmission of HARQ.
1 . A user equipment (UE), comprising:
a receiver configured to receive a radio resource control (RRC) information element (IE) indicating a first search space set having one or more control channel candidates, wherein the UE is configured to monitor a first control channel candidate of the one or more control channel candidates; and
a transmitter configured to transmit a set of bits that includes a plurality of subsets of hybrid automatic repeat request-acknowledgement (HARQ-ACK) bits, wherein the plurality of subsets of HARQ-ACK bits are respectively associated with a plurality of cell groups, each cell group of the plurality of cell groups includes one or more serving cells, and the first control channel candidate is associated with a first serving cell that is part of a cell group of the plurality of cell groups, wherein the first control channel candidate indicates the cell group of the first serving cell,
wherein the transmitter is configured to transmit an information block that indicates whether the UE supports frequency-division multiplexing of a groupcast physical downlink shared channel (PDSCH) and a unicast PDSCH.
2 . The UE according to claim 1 , wherein the plurality of cell groups are sequentially indexed, and the first control channel candidate is used to determine an index of the cell group of the first serving cell, the plurality of subsets of HARQ-ACK bits are concatenated to generate the set of bits, and an order of indices of the plurality of X cell groups is used to determine a concatenation order of the plurality of subsets of HARQ-ACK bits.
3 . The UE according to claim 1 , wherein whether a downlink control information (DCI) format for monitoring a control channel candidate of the first search space set includes a DCI format scheduling groupcast or multicast traffic is used to determine at least the cell group of the first serving cell.
4 . The UE according to claim 1 , wherein a first bit subset of HARQ-ACK bits of the plurality of X bit subsets of HARQ-ACK bits includes the first bit block corresponds to a first time-domain occasion, the first time-domain occasion is a time-domain occasion of a first occasion set, the first occasion set includes multiple time-domain occasions, and a position of the first time-domain occasion in the first occasion set is used to determine the first bit block from the first bit subset of HARQ-ACK bits.
5 . The UE according to claim 4 , wherein the first occasion set is one of a plurality of occasion sets that each includes one or more time-domain occasions, and the first control channel candidate is used to determine the first occasion set from the plurality of occasion sets.
6 . The UE according to claim 1 , wherein the receiver is configured to receive a first signal, and information carried by the first control channel candidate is used to determine time-frequency resources occupied by the first signal, a first identity is used for a scrambling sequence of the first signal, the first signal belongs to the first serving cell, and one of the plurality of subsets of HARQ-ACK bits is used to indicate whether the first signal is correctly received.
7 . A base station, comprising:
a transmitter configured to transmit a radio resource control (RRC) information element (IE) indicating a first search space set having one or more control channel candidates, the one or more control channel candidates including a first control channel candidate; and
a receiver configured to receive a set of bits that includes a plurality of subsets of hybrid automatic repeat request-acknowledgement (HARQ-ACK) bits, wherein the plurality of subsets of HARQ-ACK bits are respectively associated with a plurality of cell groups, each cell group of the plurality of cell groups includes one or more serving cells, and the first control channel candidate is associated with a first serving cell that is part of a cell group of the plurality of cell groups, wherein control information of the first control channel candidate indicates the cell group of the first serving cell,
wherein the receiver is configured to receive an information block that indicates whether a user equipment supports frequency-division multiplexing of a groupcast physical downlink shared channel (PDSCH) and a unicast PDSCH.
8 . The base station according to claim 7 , wherein the plurality of cell groups are sequentially indexed, and the first control channel candidate is used to determine an index of the cell group of the first serving cell, the plurality of subsets of HARQ-ACK bits are concatenated to generate the set of bits, and an order of indices of the plurality of X cell groups is used to determine a concatenation order of the plurality of subsets of HARQ-ACK bits.
9 . The base station according to claim 7 , wherein whether a downlink control information (DCI) format for monitoring a control channel candidate of the first search space set includes a DCI format scheduling groupcast or multicast traffic is used to determine at least the cell group of the first serving cell.
10 . The base station according to claim 7 , wherein a first subset of HARQ-ACK bits of the plurality of subsets of HARQ-ACK bits includes a first bit block, the first bit block corresponds to a first time-domain occasion, the first time-domain occasion is a time-domain occasion of a first occasion set, the first occasion set includes multiple time-domain occasions, and a position of the first time-domain occasion in the first occasion set is used to determine the first bit block from the first subset of HARQ-ACK bits.
11 . The base station according to claim 7 , wherein the transmitter is configured to transmit a first signal, and information carried by the first control channel candidate is used to determine time-frequency resources occupied by the first signal, a first identity is used for a scrambling sequence of the first signal, the first signal belongs to the first serving cell, and one of the plurality of subsets of HARQ-ACK bits is used to indicate whether the first signal is correctly received.
12 . A method, comprising:
receiving a radio resource control (RRC) information element (IE) indicating a first search space set having one or more control channel candidates;
monitoring a first control channel candidate of the one or more control channel candidates;
transmitting a set of bits that includes a plurality of subsets of hybrid automatic repeat request-acknowledgement (HARQ-ACK) bits, wherein the plurality of subsets of HARQ-ACK bits are respectively associated with a plurality of cell groups, each cell group of the plurality of cell groups includes one or more serving cells, and the first control channel candidate is associated with a first serving cell that is part of a cell group of the plurality of cell groups, wherein control information of the first control channel candidate indicates a cell group of the first serving cell; and
transmitting an information block that indicates whether a user equipment supports frequency-division multiplexing of a groupcast physical downlink shared channel (PDSCH) and a unicast PDSCH.
13 . The method according to claim 12 , wherein the plurality of cell groups are sequentially indexed, and the first control channel candidate is used to determine an index of the cell group of the first serving cell, the plurality of subsets of HARQ-ACK bits are concatenated to generate the set of bits, and an order of indices of the plurality of X-cell groups is used to determine a concatenation order of the plurality of subsets of HARQ-ACK bits.
14 . The method according to claim 12 , wherein whether a downlink control information (DCI) format for monitoring a control channel candidate of the first search space set includes a DCI format scheduling groupcast or multicast traffic is used to determine at least the cell group of to which the first serving cell.
15 . The method according to claim 12 , wherein a first bit subset of HARQ-ACK bits of the plurality of subsets of HARQ-ACK bits includes a first bit block, the first bit block corresponds to a first time-domain occasion, the first time-domain occasion is a time-domain occasion of a first occasion set, the first occasion set includes multiple time-domain occasions, and a position of the first time-domain occasion in the first occasion set is used to determine the first bit block from the first subset of HARQ-ACK bits.
16 . The method according to claim 15 , wherein the first occasion set is one of a plurality of occasion sets that each includes one or more time-domain occasions, and the first control channel candidate is used to determine the first occasion set from the plurality of occasion sets.
17 . The method according to claim 12 , comprising:
receiving a first signal,
wherein information carried by the first control channel candidate is used to determine time frequency resources occupied by the first signal, a first identity is used for a scrambling sequence of the first signal, the first signal belongs to the first serving cell, and one of the plurality of subsets of HARQ-ACK bits is used to indicate whether the first signal is correctly received.