Apparatus and methods for group wireless transmit/receive unit (wtru) handover

Abstract

Apparatus and methods of handing over a wireless transmit/receive unit (WTRU) that belongs to a group of WTRUs from an originating base station to a target base station are described. A method includes the WTRU obtaining information regarding a group to which the WTRU has been assigned and the WTRU receiving at least one of handover reconfiguration information that is common to the group and handover reconfiguration information that is specific to the WTRU. On a condition that the WTRU receives the handover reconfiguration information that is specific to the WTRU, the WTRU initiates a synchronization procedure with the target base station based at least on the received handover reconfiguration information.

What is claimed: 
     
         1 . A wireless transmit/receive unit (WTRU) comprising:
 a transceiver; and   a processor; wherein   the transceiver and the processor are configured to:
 receive, from a base station, information regarding a group of WTRUs, wherein the WTRUs of the group share a mobility pattern and are located in proximity to each other and the group of WTRUs have a group identifier; 
 receive, from the base station, a group transmission for the WTRUs in the group based on the group identifier; 
 receive information directly from another WTRU of the group; 
 receive, from the base station, an indication that the WTRUs in the group have changed; and 
 transmit, to the base station, an indication that the WTRU is leaving the group.