Methods for unlicensed resource selection

A wireless transmit receive unit (WTRU), comprising:

• a processor;
• a transceiver operatively coupled to the processor;
• the processor being further configured to monitor a plurality of bandwidth sub bands (BWSBs) in an unlicensed frequency spectrum to determine the availability of an uplink channel using any of a set of monitoring occasions per BWSB and at least one time offset per BWSB, wherein the monitoring occasions of said set occur repeatedly in time, the time offset being different per BWSB;
• and
• on condition the uplink channel is determined to be available in a monitored BWSB based on any of a monitoring occasion in the set of monitoring occasions and the at least one time offset, the transceiver and the processor being further configured to transmit on the acquired monitored BWSB.

A wireless transmit receive unit (WTRU), comprising:

• a processor;
• a transceiver operatively coupled to the processor;
• the processor being further configured to monitor a plurality of bandwidth sub bands (BWSBs) in an unlicensed frequency spectrum to receive at least one signal using any of a set of monitoring occasions per BWSB and at least one time offset per BWSB, wherein the monitoring occasions of said set occur repeatedly in time, the time offset being different per BWSB;
• and
• the transceiver and processor being further configured to determine a monitored BWSB to be active on condition the at least one signal is received by the WTRU from a serving cell according to any of a monitoring occasion in the set of monitoring occasions and the at least one time offset.