Session initiation protocol (SIP) user agent in a serving GPRS support node (SGSN)
First Claim
1. A telecommunications system, comprising:
- a Serving GPRS support node (SGSN) adapted to interface to a mobile station; and
a gateway GPRS support node (GGSN) adapted to couple to a packet network;
wherein said SSGN includes a Session Initiation Protocol (SIP) user agent for interfacing to a SIP application server, to provide multimedia services to said mobile station.
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Accused Products
Abstract
A Session Initiation Protocol (SIP) application server is connected to an SGSN by a SIP user agent. The SIP user agent supports the SIP protocol. The system is implemented using a GPRS Attach/Detach state model and a GPRS PDP context state model. When relevant detection points in these state models are encountered, the SGSN provides an indication to the SIP User Agent, which will determine the necessary action, i.e., trigger the network event to the SIP application server, where service logic is invoked and executed. SGSN requested PDP context activation capability is added in order to support push services from the SIP application service. Operator owned PDP context is added in order to provide free services for the mobile end users.
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Citations
19 Claims
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1. A telecommunications system, comprising:
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a Serving GPRS support node (SGSN) adapted to interface to a mobile station; and
a gateway GPRS support node (GGSN) adapted to couple to a packet network;
wherein said SSGN includes a Session Initiation Protocol (SIP) user agent for interfacing to a SIP application server, to provide multimedia services to said mobile station. - View Dependent Claims (2, 3)
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4. A telecommunications method, comprising:
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processing a detection point attach when the normal GPRS attach process is successful but is not completed;
an SGSN requesting PDP context activation; and
triggering an SIP request.
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5. A GPRS telecommunications system, comprising:
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a Serving GPRS support node (SGSN) adapted to interface to a mobile station, wherein said SGSN includes a Session Initiation Protocol (SIP) user agent;
a gateway GPRS support node (GGSN) adapted to couple to a packet network; and
a SIP application server, said SIP user agent and said SIP application server adapted to provide multimedia services to said mobile station. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A method, comprising:
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providing a Serving GPRS support node (SGSN) adapted to interface to a mobile station, wherein said SGSN includes a Session Initiation Protocol (SIP) user agent;
providing a gateway GPRS support node (GGSN) adapted to couple to a packet network; and
providing a SIP application server, said SIP user agent and said SIP application server adapted to provide multimedia services to said mobile station. - View Dependent Claims (12, 13, 14, 15, 16, 18, 19)
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17. A method in a GPRS network, comprising:
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requesting a DP attach from a mobile station to an SGSN;
requesting a PDP context activation from said SGSN to said mobile station;
performing a PDP context activation in response to said requesting; and
pushing content to said mobile station.
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Specification