US 11,737,093 B2
User equipment and base station involved in transmission of uplink control data
Rikin Shah, Langen (DE); Hidetoshi Suzuki, Kanagawa (JP); Ming-Hung Tao, Frankfurt am Main (DE); and Ankit Bhamri, Rödermark (DE)
Assigned to Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Nov. 12, 2020, as Appl. No. 17/96,196.
Application 17/096,196 is a continuation of application No. PCT/EP2019/073975, filed on Sep. 9, 2019.
Claims priority of application No. 18197352 (EP), filed on Sep. 27, 2018.
Prior Publication US 2021/0068135 A1, Mar. 4, 2021
Int. Cl. H04W 72/20 (2023.01); H04W 72/121 (2023.01)
CPC H04W 72/20 (2023.01) [H04W 72/121 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A user equipment, UE, comprising:
a receiver, which in operation, receives, from a base station communicating with the user equipment via an unlicensed radio cell, uplink configuration information to configure at least one set of radio resources of the unlicensed radio cell, the at least one set of radio resources being available to the user equipment for transmitting uplink control information, wherein the at least one set of radio resources is associated with a UE group ID indicating a group of user equipment with which the user equipment is associated, the receiver, which in operation, receives, from the base station, downlink control information, DCI, including a field indicating the UE group ID;
processing circuitry, which in operation, determines whether the UE group ID with which the user equipment is associated is the same as the UE group ID indicated by the downlink control information, the processing circuitry, when determining that the UE group ID with which the user equipment is associated is the same as the UE group ID indicated by the downlink control information, determines scheduling request radio resources within at least one set of uplink control information radio resources based on the downlink control information; and
a transmitter, which in operation, transmits a scheduling request to the base station using the determined scheduling request radio resources,
wherein:
in response to the transmitter, in operation, transmitting the scheduling request before an expiration of a first time period that commences from reception of the DCI, the user equipment does not perform a clear channel assessment on the unlicensed radio cell prior to transmitting the scheduling request, wherein the first time period is 0.16% to 1.6% of a channel occupancy time of the base station, and
in response to the transmitter, in operation, transmitting the scheduling request after the expiration of the first time period, the user equipment performs the clear channel assessment prior to transmitting the scheduling request.