Patent ID: 11943772
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method, for a user equipment, UE, for performing an unscheduled uplink transmission in an unlicensed portion of a radio spectrum, the method comprising:
performing, by the UE, a listen before talk, LBT, operation in the unlicensed portion of the radio spectrum, wherein the LBT operation comprises sensing the unlicensed portion of the radio spectrum for a pre-determined minimum amount of time for traffic; and, if no traffic was sensed;
performing the unscheduled uplink transmission, by the UE, of data in an unscheduled mode of operation for at least one transmission burst, wherein performing the unscheduled uplink transmission, by the UE, of data in an unscheduled mode of operation for at least one transmission burst is repeated until an earliest opportunity to transmit a scheduling request, SR, occurs, and wherein the transmission of the SR can occur on one of a licensed carrier or an unlicensed carrier.