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:
- 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 without regard to the existence of an IP connectivity access network (IP-CAN) bearer connecting the user equipment to the proxy.
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Abstract
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
58 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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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 without regard to the existence of an IP connectivity access network (IP-CAN) bearer connecting the user equipment to the proxy. - 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; open a proxy session for the user equipment; establish a registration within said IMS network for IMS services on behalf of the user equipment; maintain the registration for the user equipment for the duration of the proxy session without regard to the existence of an IP-CAN bearer connecting the user equipment to the proxy. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method implemented by a user equipment of establishing a registration in an IP Multimedia Subsystem (IMS) network, the method comprising:
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activating an IP connectivity access network (IP-CAN) bearer to a proxy; initiating a proxy session with the proxy, wherein the proxy performs registration within the IMS network on behalf of the user equipment; deactivating the IP-CAN bearer to the proxy during the proxy session while the proxy maintains the registration of the user equipment within the IMS network. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A user equipment for communicating with an IP Multimedia Subsystem (IMS) network, the user equipment comprising:
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a communication interface for communicating with a proxy over an IP connectivity access network (IP-CAN) bearer; and a control processor operatively connected to the communication interface and configured to; activate an IP connectivity access network (IP-CAN) bearer to a proxy; initiate a proxy session with the proxy, wherein the proxy performs registration within the IMS network on behalf of the user equipment; deactivate the IP-CAN bearer to the proxy during the proxy session while the proxy maintains the registration of the user equipment within the IMS network. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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Specification