US 12,432,711 B2
Network initiated polling for uplink scheduling request
Qingjiang Tian, San Diego, CA (US); Jing Sun, San Diego, CA (US); Xiaoxia Zhang, San Diego, CA (US); Zhifei Fan, San Diego, CA (US); Wooseok Nam, San Diego, CA (US); Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, San Diego, CA (US); and Tao Luo, San Diego, CA (US)
Assigned to Qualcomm Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Feb. 23, 2022, as Appl. No. 17/652,232.
Claims priority of provisional application 63/174,329, filed on Apr. 13, 2021.
Prior Publication US 2022/0330271 A1, Oct. 13, 2022
Int. Cl. H04W 72/12 (2023.01); H04W 72/1268 (2023.01); H04L 1/1812 (2023.01)
CPC H04W 72/12 (2013.01) [H04W 72/1268 (2013.01); H04L 1/1812 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication at a user equipment (UE), comprising:
memory; and
at least one processor coupled to the memory and configured to:
receive, from a base station, an indication to transmit a scheduling request (SR), wherein the indication is based on one of:
a medium access control-control element (MAC-CE) in a physical downlink shared channel (PDSCH) transmission associated with one or more physical uplink control channel (PUCCH) resources, wherein the MAC-CE indicates a polling request for the UE to transmit the SR,
multiple downlink control information (DCI) that trigger hybrid automatic repeat request (HARQ) feedback in a PUCCH resource, wherein the indication is indicated in each DCI triggering the HARQ feedback in the PUCCH resource,
a first radio resource control (RRC) configuration to include the SR in each HARQ PUCCH transmission,
a second RRC configuration that configures a polling request period parameter and a polling request offset parameter for transmission of an SR polling request in the one or more PUCCH resources for the HARQ feedback that enable the UE to determine whether to transmit the SR in a HARQ PUCCH transmission based on a slot index, the polling request period parameter, and the polling request offset parameter, or
an uplink grant for an SR transmission in combination with a disablement of SR transmissions in non-HARQ PUCCH resources and an enablement of the SR transmissions in HARQ PUCCH resources;
receive a downlink transmission triggering the HARQ feedback in the one or more PUCCH resources; and
transmit the SR to the base station in the one or more PUCCH resources for the HARQ feedback.