Uplink control information transmission method and apparatus in carrier aggregation

Abstract

Embodiments of the present disclosure provide a method for a transmission of uplink control information (UCI), such as hybrid automatic repeat request (HARQ) information. A base station sends first indication information to a user equipment (UE), to instruct the UE to dynamically determine the UCI according to the first indication information, and the base station allocates a resource to the UE to transmit the UCI. The embodiments of the present disclosure may be used to implement a feedback of the UCI information in a carrier aggregation scenario, thereby improving performance of transmitting valid UCI information.

1 . A method performed by a base station in a communications system, the method comprising:
 sending radio resource control (RRC) signaling to a user equipment (UE), wherein the RRC signaling comprises first indication information indicating the UE to perform spatial bundling on hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ-ACK/NACK) information, wherein the spatial bundling is an AND logical operation; and   receiving from the UE, a HARQ-ACK/NACK codebook comprising a spatial bundled bit of the HARQ-ACK/NACK information.   
     
     
         2 . The method of  claim 1 , wherein the spatial bundled bit of the HARQ-ACK/NACK information equals to a value of an AND logical operation of bits of the HARQ-ACK/NACK information of a carrier. 
     
     
         3 . The method of  claim 1 , further comprising:
 sending downlink control information indicating a physical uplink control channel (PUCCH) resource, wherein the PUCCH resource is for receiving the spatial bundled bit of the HARQ-ACK/NACK information.   
     
     
         4 . The method of  claim 3 , wherein the PUCCH resource is determined on a start address of the PUCCH resource and a size of the PUCCH resource. 
     
     
         5 . The method of  claim 1 , further comprising:
 sending higher layer signaling indicating a plurality of physical uplink control channel (PUCCH) resources; and   receiving downlink control information indicating a PUCCH resource from the plurality of PUCCH resources, wherein the PUCCH resource is for receiving the bundled spatial bit of the HARQ-ACK/NACK information.   
     
     
         6 . The method of  claim 5 , wherein the plurality of PUCCH resources comprise at least two PUCCH resources corresponding to one PUCCH format. 
     
     
         7 . The method of  claim 1 , wherein the HARQ-ACK/NACK codebook is determined based on at least one of:
 a total quantity of at least one scheduled carrier, or   an accumulated quantity of at least one scheduled carrier.   
     
     
         8 . An apparatus, comprising:
 a processor; and   a memory coupled to the processor and storing instructions;   wherein the processor, when executing the instructions, is configured to:   send radio resource control (RRC) signaling to a user equipment (UE), wherein the RRC signaling comprises first indication information indicating the UE to perform spatial bundling on hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ-ACK/NACK) information, wherein the spatial bundling is an AND logical operation; and   receive from the UE, a HARQ-ACK/NACK codebook comprising a spatial bundled bit of the HARQ-ACK/NACK information.   
     
     
         9 . The apparatus of  claim 8 , wherein the spatial bundled bit of the HARQ-ACK/NACK information equals to a value of an AND logical operation of bits of HARQ ACK/NACK information of a carrier. 
     
     
         10 . The apparatus of  claim 8 , wherein the memory stores further instructions that when executed further configure the processor to:
 send downlink control information indicating a physical uplink control channel (PUCCH) resource, wherein the PUCCH resource is for receiving the spatial bundled bit of the HARQ-ACK/NACK information.   
     
     
         11 . The apparatus of  claim 10 , wherein the PUCCH resource is determined on a start address of the PUCCH resource and a size of the PUCCH resource. 
     
     
         12 . The apparatus of  claim 8 , wherein the memory stores further instructions that when executed further configure the processor to:
 send higher layer signaling indicating a plurality of physical uplink control channel (PUCCH) resources; and   receive downlink control information indicating a PUCCH resource from the plurality of PUCCH resources, wherein the PUCCH resource is for receiving the spatial bundled bit of the HARQ-ACK/NACK information.   
     
     
         13 . The apparatus of  claim 12 , wherein the plurality of PUCCH resources comprise at least two PUCCH resources corresponding to one PUCCH format. 
     
     
         14 . The apparatus of  claim 8 , wherein the HARQ-ACK/NACK codebook is determined based on at least one of:
 a total quantity of at least one scheduled carrier, or   an accumulated quantity of at least one scheduled carrier.   
     
     
         15 . A non-transitory computer readable medium storing instructions that when executed by a processor, configure the processor to:
 send radio resource control (RRC) signaling to a user equipment (UE), wherein the RRC signaling comprises first indication information indicating the UE to perform spatial bundling on hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ-ACK/NACK) information, wherein the spatial bundling is an AND logical operation; and   receive from the UE, a HARQ-ACK/NACK codebook comprising a spatial bundled bit of the HARQ-ACK/NACK information.   
     
     
         16 . The medium of  claim 15 , wherein the spatial bundled bit of the HARQ-ACK/NACK information equals to a value of an AND logical operation of bits of HARQ-ACK/NACK information of a carrier. 
     
     
         17 . The medium of  claim 15 , further comprising instructions for configuring the processor to:
 send downlink control information indicating a physical uplink control channel (PUCCH) resource, wherein the PUCCH resource is for receiving the spatial bundled bit of the HARQ-ACK/NACK information.   
     
     
         18 . The medium of  claim 17 , wherein the PUCCH resource is determined on a start address of the PUCCH resource and a size of the PUCCH resource. 
     
     
         19 . The medium of  claim 15 , further comprising instructions for configuring the processor to:
 send higher layer signaling indicating a plurality of physical uplink control channel (PUCCH) resources; and   receive downlink control information indicating a PUCCH resource from the plurality of PUCCH resources, wherein the PUCCH resource is for receiving the spatial bundled bit of the HARQ-ACK/NACK information.   
     
     
         20 . The medium of  claim 19 , wherein the plurality of PUCCH resources comprise at least two PUCCH resources corresponding to one PUCCH format. 
     
     
         21 . The medium of  claim 15 , wherein the HARQ-ACK/NACK codebook is determined based on at least one of:
 a total quantity of at least one scheduled carrier, or   an accumulated quantity of at least one scheduled carrier.