MAINTAINING CIRCUIT SWITCHED CONTINUITY IN AN ENHANCED UNIVERSAL TERRESTRIAL RADIO ACCESS NETWORK

摘要

A wireless transmit/receive unit (WTRU), supporting Long Term Evolution (LTE), to perform circuit switched (CS) fallback is provided. The WTRU may receive, via a packet switched (PS) evolved UMTS terrestrial radio access network (E-UTRAN), a paging message including an International Mobile Subscriber Identity (IMSI). The paging message may have a domain indicator indicating that the paging message is from a CS service. The WTRU may fallback to CS and subsequently use the IMSI.