| 摘要 |
A method of managing presence information in a packet-switched wireless communication network such as a General Packet Radio Service (GPRS) network or a Wideband Code Division Multiple Access (WCDMA) network. Instead of using the Session Initiation Protocol (SIP) to send presence update messages to a presence server in the packet-switched network, the MS/UE sends its presence information to the presence server using a circuit-switched Unstructured Supplementary Services Data (USSD) message that is sent via a USSD gateway. The USSD message includes an IP address of the presence server, and the USSD gateway extracts the IP address and forwards the presence update message to the presence server.
|
