Enabling dual registration of user equipment with IP multimedia subsystems
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsRalf Keller, Mats Ola Stille
Life of this patent
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Abstract
A method of enabling dual registration of a User Equipment, UE, with first and second Internet Protocol Multimedia Subsystem, IMS, networks, the method comprising, in response to a connection request made to a gateway node by the UE, sending to the UE, network addresses of respective first and second Proxy Call Session Control Functions, P-CSCF, the first and second P-CSCFs being configured to enable IMS registrations to the first and second IMS networks respectively.
Claims15
A method of enabling dual registration of a User Equipment, UE, with first and second Internet Protocol Multimedia Subsystem, IMS, networks, the method comprising, in response to a connection request made to a gateway node by the UE, sending to the UE, network addresses of respective first and second Proxy Call Session Control Functions, P-CSCF, the first and second P-CSCFs being configured to enable IMS registrations to the first and second IMS networks respectively.
An apparatus for use in user equipment in a communication network, the apparatus comprising:
- processor circuitry;
- a storage unit storing instructions executable by the processor circuitry, a transmitter and a receiver, whereby the apparatus is operative to:
- send a connection request to a gateway node;
- receive, in response to the connection request, a response comprising a first network address associated with a first P-CSCF;
- send a register request for a first IMS to the first P-CSCF using the first network address;
- and
- upon determining that the response contains a second network address associated with a second P-CSCF, send a register request for a second IMS to the second proxy server using the second network address.
An apparatus for use in a network gateway in a Public Land Mobile Network, PLMN, the apparatus comprising:
- processor circuitry;
- a storage unit storing instructions executable by said processor circuitry;
- a transmitter and a receiver;
- whereby the apparatus is operative to:
- receive from a User Equipment, UE, a connection request;
- and
- in response to the request, send a first and a second network address associated respectively with a first and a second P-CSCF;
- wherein the first and second network addresses enable the UE to register respectively with a first and a second IMS.
Dependencies are inferred from the claim text.