US 12,192,856 B2 · Link adaptation for sidelink groupcast

Abstract

Methods, computer programs and receiving wireless devices for operating a receiving wireless device associated with a group are provided, wherein the group includes the receiving wireless device and a transmitting wireless device. The method includes receiving a groupcast data packet from the transmitting wireless device of the group. The method further includes determining a distance of the receiving wireless device from the transmitting wireless device. The method further includes selecting a communication resource for one of an Acknowledgement, ACK, message or Negative Acknowledgement, NACK, message for the groupcast data packet, wherein the communication resource is selected based on the distance from the transmitting wireless device. The method further includes transmitting the one of the ACK message or NACK message for the groupcast data packet using the communication resource selected based on the distance from the transmitting wireless device.

Claims20

Dependent claims

A method of operating a transmitting wireless device associated with a group, wherein the group includes the transmitting wireless device and a plurality of other wireless devices, the method comprising:

transmitting a groupcast data packet to the plurality of other wireless devices of the group;
determining a power/energy of at least one Hybrid Automatic Repeat Request (HARQ) feedback message received in response to the groupcast data packet, wherein respective positive acknowledgment (ACK) and negative acknowledgment (NACK) communication resources are provided for HARQ feedback of the groupcast data packet, and determining the power/energy comprises determining a combined power/energy received from some of the plurality of other wireless devices of the group over the ACK communication resource for the groupcast data packet and determining a combined power/energy received from other of the plurality of other wireless devices of the group over the NACK communication resource for the groupcast data packet;
and
adjusting a transmission comprising performing the transmission using a modulation and coding scheme (MCS) and adjusting the MCS based on the power/energy of the at least one HARQ feedback message.

1 more element

A transmitting wireless device comprising:

a processor;
and
memory coupled with the processor, wherein the memory includes instructions that when executed by the processor causes the transmitting wireless device to perform operations comprising:
transmitting a groupcast data packet to the plurality of other wireless devices of the group;
determining a power/energy of at least one Hybrid Automatic Repeat Request (HARQ) feedback message received in response to the groupcast data packet, wherein respective positive acknowledgment (ACK) and negative acknowledgment (NACK) communication resources are provided for HARQ feedback of the groupcast data packet, wherein determining the power/energy comprises determining a combined power/energy received over the ACK communication resource for the groupcast data packet and determining a combined power/energy received over the NACK communication resource for the groupcast data packet;
and
adjusting a transmission comprising performing the transmission using a modulation and coding scheme (MCS) and adjusting the MCS based on the power/energy of the at least one HARQ feedback message.

4 more elements

Dependencies are inferred from the claim text.

Link adaptation for sidelink groupcast

Life of this patent

Link adaptation for sidelink groupcast

Life of this patent

Abstract

Claims20