Hybrid media gateway control function providing circuit-switched access to a packet-switched radio telecommunications network
First Claim
1. A hybrid Media Gateway Control Function (MGCF) in a packet-switched radio telecommunications network that provides access to multimedia services for a mobile terminal operating in a circuit-switched mode, said hybrid MGCF comprising:
- a circuit-switched (CS)-specific signaling mechanism that exchanges CS-specific control signaling with a radio access network serving the mobile terminal;
a Session Initiation Protocol (SIP) signaling mechanism that exchanges SIP control signaling with the packet-switched radio telecommunications network;
a converter that converts the CS-specific control signaling received by the CS-specific signaling mechanism into SIP control signaling, and sends the SIP signaling to the SIP signaling mechanism; and
a switching control function that controls a Media Gateway (MGW) to route media payload from the radio access network to a destination.
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Accused Products
Abstract
A hybrid Media Gateway Control Function (MGCF) implemented in a 3G wireless telecommunications network that provides access to multimedia services and IP networks for a mobile terminal operating in a circuit-switched (CS) mode. The hybrid MGCF includes a CS-specific signaling mechanism that exchanges CS-specific control signaling with a radio access network (RAN) serving the mobile terminal, and a SIP signaling mechanism that exchanges SIP control signaling with a Call State Control Function (CSCF) that accesses multimedia services for the mobile terminal. A converter in the hybrid MGCF converts the CS-specific control signaling into SIP control signaling, and sends the SIP signaling to the SIP signaling mechanism. A switching control function within the hybrid MGCF controls a Media Gateway (MGW) to route media payload from the RAN to destinations such as multimedia IP networks.
150 Citations
16 Claims
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1. A hybrid Media Gateway Control Function (MGCF) in a packet-switched radio telecommunications network that provides access to multimedia services for a mobile terminal operating in a circuit-switched mode, said hybrid MGCF comprising:
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a circuit-switched (CS)-specific signaling mechanism that exchanges CS-specific control signaling with a radio access network serving the mobile terminal;
a Session Initiation Protocol (SIP) signaling mechanism that exchanges SIP control signaling with the packet-switched radio telecommunications network;
a converter that converts the CS-specific control signaling received by the CS-specific signaling mechanism into SIP control signaling, and sends the SIP signaling to the SIP signaling mechanism; and
a switching control function that controls a Media Gateway (MGW) to route media payload from the radio access network to a destination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A third generation (3G) wireless telecommunications network providing access to multimedia services to a mobile terminal operating in a circuit-switched mode, said network comprising:
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a radio access network (RAN) that provides the mobile terminal with access to the 3G network;
a Media Gateway (MGW) that receives media payload from the RAN and routes the payload to a destination;
a Call State Control Function (CSCF) that accesses multimedia services for the mobile terminal; and
a hybrid Media Gateway Control Function (MGCF) that comprises;
a circuit-switched (CS)-specific signaling mechanism that exchanges circuit-switched control messages with the RAN;
a converter that converts the circuit-switched control messages received by the CS-specific signaling mechanism into Session Initiation Protocol (SIP) control messages; and
a SIP signaling mechanism that exchanges SIP control signaling with the CSCF. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification