Cell reselection and handover with multimedia broadcast/multicast service

摘要

A method and apparatus for providing wireless communication services, (e.g., multimedia broadcast multicast services (MBMS)), are disclosed. A wireless transmit/receive unit (WTRU) detects a plurality of target cell evolved Node-Bs (eNodeBs) that neighbor a serving cell eNodeB. The WTRU evaluates cell reselection criteria and determines a neighboring target cell eNodeB to reselect. The WTRU receives and reads master information block (MIB) and system information messages of the neighboring target cell eNodeB, and confirms that the determined neighboring target cell eNodeB is not part of a multimedia broadcast single frequency network (MBSFN). The WTRU identifies the neighboring target cell eNodeB to the serving cell eNodeB. The WTRU then receives and reads MIB messages of the neighboring target cell eNodeB again to determine whether the system information has changed and, if so, the WTRU reads the system information and reselects to the neighboring target cell eNodeB, which provides the wireless communication services.

主权项

1. A method of providing service continuity for a wireless transmit/receive unit (WTRU), the method comprising:
receiving, at a serving cell of an evolved Node-B (eNodeB) from the WTRU, measurement reports associated with target cells that neighbor the serving cell; receiving, at the serving cell from the WTRU, a radio resource control (RRC) message including an indication of frequencies on which the WTRU is currently and/or interested in receiving multimedia broadcast multicast services (MBMS) via an MBMS single frequency network (MBSFN); transmitting, from the serving cell to the WTRU, a handover command to handover to one of the target cells, the one target cell being selected based, at least in part, on the indication; receiving, at the one target cell, a random access channel (RACH) preamble or RACH message; transmitting a RACH response from the one target cell; and transmitting, from the one target cell, at least one of the MBMS.