Acknowledgment reporting for multi-link transmissions

Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit acknowledgment feedback for a combined signal derived from individual downlink signals received on respective radio links, where the acknowledgment feedback is transmitted with a phase shift applied to the transmission. In some cases, the phase shift may indicate which individual downlink signals were unsuccessfully received and decoded on the respective radio links. For example, the acknowledgment feedback message may include acknowledgment feedback for a final decoding of the combined signal on whether the combined signal is successfully received and decoded and side negative acknowledgment information indicating which individual radio links were unsuccessfully received and decoded via the phase shift. The UE may transmit the acknowledgment feedback on a strongest radio link, a subset of the radio links, or on all of the radio links.

CPC Classifications