Connectivity supervision and recovery

A method performed by a wireless transmit/receive unit, WTRU, the method comprising:

• receiving a plurality of reference signals, wherein a first one or more reference signals are associated with a first one or more beams associated with a first cell, and wherein a second one or more reference signals are associated with a second one or more beams associated with a second cell;
• determining a quality of the first one or more reference signals;
• determining a failure based on the quality of the first one or more reference signals;
• after determination of the failure:
• sending a request for a second resource, the request sent using a first resource of the second cell, wherein the first resource is an uplink control channel resource associated with a failure recovery of the first cell, and wherein the uplink control channel resource associated with a failure recovery of the first cell is a dedicated recovery resource;
• and
• receiving a configuration of the second resource.

A non-transient computer-readable storage medium containing instructions, which when executed by a computer, performs a method comprising:

• receiving a plurality of reference signals, wherein a first one or more reference signals are associated with a first one or more beams associated with a first cell, and wherein a second one or more reference signals are associated with a second one or more beams associated with a second cell;
• determining a quality of the first one or more reference signals;
• determining a failure based on the quality of the first one or more reference signals;
• after determination of the failure:
• sending a request for a second resource, the request sent using a first resource of the second cell, wherein the first resource is an uplink control channel resource associated with a failure recovery of the first cell, and wherein the uplink control channel resource associated with a failure recovery of the first cell is a dedicated recovery resource;
• and
• receiving a configuration of the second resource.