Patent ID: 8032164

Claim:
A method, implemented by a wireless transmit/receive unit (WTRU), of communicating short message service (SMS) messages, the method comprising: an SMS protocol entity in the WTRU requesting an evolved packet system (EPS) mobility management (EMM) protocol entity to send an SMS message; the SMS protocol entity sending the SMS message to the EMM protocol entity; the EMM protocol entity initiating a procedure to send an EMM uplink (UL) non-access stratum (NAS) transport message including an information element (IE) containing the SMS message; the EMM protocol formatting the EMM UL NAS transport message to include the SMS message by encapsulating the SMS message into the EMM UL NAS transport message, and sending the EMM UL NAS transport message to a radio resource control (RRC) protocol entity in the WTRU; and the RRC protocol entity formatting an UL information transfer message to include the EMM UL NAS transport message, and transmitting the UL information transfer message over a signaling radio bearer (SRB).