| 摘要 |
A telecommunications system and method is disclosed for enabling a General Packet Radio Ser-vice (GPRS) node, namely a Serving GPRS Sup-port Node (SGSN) within a cellular network, to be able to handle requests for Location Services (LCS) for a GPRS mobile station (MS) in paral-lel to other existing transactions such as delivering short messages or engaging in session management activity, e.g., data call connection. A new LCS transaction type can be introduced in the Connec-tion-Management (CM) sub-layer of GPRS in the SGSN and the GPRS MSs to handle requests for LCS in parallel to other offered services. LCS can be multiplexed together with other existing func-tions in GPRS by allocating a new Service Access Point Identifier (SAPI) to LCS within the Logical Link Control (LLC) sub-layer of the GPRS. Alter-natively, when a common LLC SAPI is used be-tween different CM-sublayer functions,then a dif-ferent protocol discriminator (PD) can be allocated for LCS.
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