Patent ID: 9220052
Filing Date: 2015-12-22
Classification: H04W

Abstract:
1. A wireless transmit/receive unit (WTRU) comprising: a receiver configured to receive, in packet switched (PS) evolved UMTS terrestrial radio access network (E-UTRAN) signaling, a paging message with an International Mobile Subscriber Identity (IMSI) related to the WTRU and a domain indicator that specifies that the paging message is associated with a PS service or a circuit switched (CS) service, wherein the domain indicator specifies the CS service; at least one processor configured to send, in PS E-UTRAN signaling, an extended service request message; the at least one processor is configured to perform fallback to the CS service subsequently after the sent extended service request message; and the at least one processor is configured to respond, via the CS service, to the paging message with the IMSI.