Patent ID: 11950280
Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An apparatus that performs wireless communication comprising:
a processor; and
a memory coupled with the processor, the memory comprising executable instructions stored thereon that when executed by the processor cause the processor to effectuate operations comprising:
determining that a channel is available in multiple frequency bands;
generating a composite carrier indicator (CCI) that indicates one or more of the frequency bands of the multiple frequency bands that are within a composite carrier;
sending the CCI to a wireless transmit/receive unit (WTRU), wherein the CCI is communicated via downlink control information of a physical downlink control channel (PDCCH) transmissions;
determining that a category four (CAT4) listen-before talk (LBT) is successful on a first frequency band of the one or more frequency bands; and
based on the CAT4 LBT being successful on the first frequency band of the one or more frequency bands, performing a category two (CAT2) LBT on a second frequency band, wherein the first frequency band and the second frequency band are in the composite carrier.