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US 11,153,870 B2Granted
PUCCH resource mapping and HARQ-ACK feedback
AssigneeQUALCOMM Incorporated
InventorsChao Wei, Wanshi Chen, Xiaoxia Zhang, Neng Wang, Hao Xu, Peter Gaal
Life of this patent
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Abstract
Aspects of the present disclosure relate to techniques that may help enable the determination of uplink resource allocation in systems that support dynamic uplink-downlink subframe configurations. An example method generally includes receiving signaling indicating a dynamic uplink-downlink (UL-DL) subframe configuration, determining hybrid automatic repeat request (HARQ) acknowledgment/negative acknowledgment (ACK/NACK) timing based on a reference UL-DL subframe configuration, and determining HARQ resource allocation based on the dynamic UL-DL subframe configuration.
Claims25
A method for wireless communication by a user equipment (UE), comprising:
- receiving signaling indicating a dynamic uplink-downlink (UL-DL) subframe configuration;
- determining hybrid automatic repeat request (HARQ) acknowledgement/negative acknowledgement (ACK/NACK) timing based on the dynamic UL-DL subframe configuration and a resource offset, wherein the dynamic UL-DL subframe configuration includes a plurality of consecutive UL subframes, and wherein determining the HARQ ACK/NACK timing comprises determining a subframe in which to transmit the HARQ ACK/NACK based on a number of the plurality of consecutive UL subframes in the dynamic UL-DL subframe configuration;
- determining HARQ resource allocation for a physical uplink control channel (PUCCH) based on the dynamic UL-DL subframe configuration, wherein the HARQ resource allocation comprises an allocation of frequency resources on which the PUCCH is to be transmitted;
- and
- transmitting a HARQ ACK/NACK on the PUCCH based on the determined HARQ resource allocation and HARQ ACK/NACK timing.
2 more elements
An apparatus for wireless communications, comprising:
- means for receiving signaling indicating a dynamic uplink-downlink (UL-DL) subframe configuration;
- means for determining hybrid automatic repeat request (HARQ) acknowledgement/negative acknowledgement (ACK/NACK) timing based on the dynamic UL-DL subframe configuration and a resource offset, wherein the dynamic UL-DL subframe configuration includes a plurality of consecutive UL subframes, and wherein determining the HARQ ACK/NACK timing comprises determining a subframe in which to transmit the HARQ ACK/NACK based on a number of the plurality of consecutive UL subframes in the dynamic UL-DL subframe configuration;
- means for determining HARQ resource allocation for a physical uplink control channel (PUCCH) based on the dynamic UL-DL subframe configuration, wherein the HARQ resource allocation comprises an allocation of frequency resources on which the PUCCH is to be transmitted;
- and
- means for transmitting a HARQ ACK/NACK on the PUCCH based on the determined HARQ resource allocation and HARQ ACK/NACK timing.
2 more elements
An apparatus for wireless communications, comprising:
- means for receiving signaling indicating a dynamic uplink-downlink (UL-DL) subframe configuration;
- means for determining hybrid automatic repeat request (HARQ) acknowledgement/negative acknowledgement (ACK/NACK) timing based on the dynamic UL-DL subframe configuration, wherein the dynamic UL-DL subframe configuration includes a plurality of consecutive UL subframes, and wherein determining the HARQ ACK/NACK timing comprises determining a subframe in which to transmit the HARQ ACK/NACK based on a number of the plurality of consecutive UL subframes in the dynamic UL-DL subframe configuration;
- means for determining HARQ resource allocation for a physical uplink control channel (PUCCH) based on the dynamic UL-DL subframe configuration, wherein separate PUCCH regions are configured for UEs capable of supporting dynamic UL-DL subframe configuration and UEs not capable of supporting dynamic UL-DL subframe configuration, and wherein the HARQ resource allocation comprises an allocation of frequency resources on which the PUCCH is to be transmitted;
- means for determining whether a potential collision exists between the HARQ resource allocation and the PUCCH region for UEs not capable of supporting dynamic UL-DL subframe configuration;
- means for using the PUCCH region for UEs not capable of supporting dynamic UL-DL subframe configuration for communications between the UE and a base station if no potential collision is determined;
- and
- means for transmitting HARQ ACK/NACK on the PUCCH based on the HARQ ACK/NACK timing and HARQ resource allocation.
4 more elements
An apparatus for wireless communications, comprising:
- means for transmitting, to a user equipment (UE), signaling indicating a dynamic uplink-downlink (UL-DL) subframe configuration;
- means for determining hybrid automatic repeat request (HARQ) acknowledgement/negative acknowledgement (ACK/NACK) timing for the UE based on the dynamic UL-DL subframe configuration, wherein the dynamic UL-DL subframe configuration includes a plurality of consecutive UL subframes, and wherein determining the HARQ ACK/NACK timing comprises determining a subframe in which to transmit the HARQ ACK/NACK based on a number of the plurality of consecutive UL subframes in the dynamic UL-DL subframe configuration;
- means for determining HARQ resource allocation for a physical uplink control channel for the UE based on the dynamic UL-DL subframe configuration, wherein separate PUCCH regions are configured for UEs capable of supporting dynamic UL-DL subframe configuration and UEs not capable of supporting dynamic UL-DL subframe configuration, and wherein the HARQ resource allocation comprises an allocation of frequency resources on which the PUCCH is to be transmitted;
- means for determining whether a potential collision exists between the determined HARQ resource allocation and the PUCCH region for UEs not capable of supporting dynamic UL-DL subframe configuration, wherein the PUCCH region for UEs not capable of supporting dynamic UL-DL subframe configuration is used for communications between the BS and both UEs not capable of supporting dynamic UL-DL subframe configuration and UEs capable of supporting dynamic UL-DL subframe configuration if no potential collision is determined;
- and
- means for receiving HARQ ACK/NACK on the PUCCH from the UE based on the determined HARQ resource allocation and HARQ ACK/NACK timing.
3 more elements
Dependencies are inferred from the claim text.