Maintaining IMS registration while disconnected from IP bearer
First Claim
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1. A method implemented by a proxy of maintaining registration in an IP Multimedia Subsystem (IMS) network for a user equipment, the method comprising:
- receiving an IMS registration request for an IMS network from a user equipment, via an IP connectivity access network (IP-CAN) bearer connecting the user equipment to the proxy;
opening a proxy session for the user equipment;
establishing a registration within said IMS network for IMS services on behalf of the user equipment; and
maintaining the registration for the user equipment for the duration of the proxy session even while an IP-CAN bearer connecting the user equipment to the proxy does not exist.
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Abstract
A proxy maintains registration in an IP Multimedia Subsystem (IMS) network for a user equipment while the user equipment is disconnected from the system. The user equipment connects to the proxy and establishes a proxy session with the proxy. The proxy opens a proxy session for the user equipment, establishes a registration within said IMS network for IMS services on behalf of the user equipment; and maintains the registration for the user equipment for the duration of the proxy session. While the proxy session is ongoing, the user equipment can disconnect from the IP proxy.
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Citations
34 Claims
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1. A method implemented by a proxy of maintaining registration in an IP Multimedia Subsystem (IMS) network for a user equipment, the method comprising:
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receiving an IMS registration request for an IMS network from a user equipment, via an IP connectivity access network (IP-CAN) bearer connecting the user equipment to the proxy; opening a proxy session for the user equipment; establishing a registration within said IMS network for IMS services on behalf of the user equipment; and maintaining the registration for the user equipment for the duration of the proxy session even while an IP-CAN bearer connecting the user equipment to the proxy does not exist. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A proxy for an IP multimedia subsystem (IMS) network, said proxy comprising:
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a first communication interface for communicating with said IMS network; a second communication interface for communicating with a user equipment; and a controller operatively connected to the first communication interface and the second communication interface and configured to; receive an IMS registration request for an IMS network from a user equipment, via an IP connectivity access network (IP-CAN) bearer connecting the user equipment to the proxy; open a proxy session for the user equipment; establish a registration within said IMS network for IMS services on behalf of the user equipment; and maintain the registration for the user equipment for the duration of the proxy session even while an IP-CAN bearer connecting the user equipment to the proxy does not exist. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification