BlackBerry Limited
Uplink resource scheduling control in response to channel busy condition

Abstract:

A wireless access network node transmits scheduling information assigning an uplink resource for a user equipment (UE), detects whether the UE has not transmitted using the assigned uplink resource, determines, based on the detecting, that the UE has failed a Listen-Before-Talk (LBT) check at the UE, and further schedules and assigns an uplink resource for the UE.