Bearer path optimization
First Claim
1. A method of providing efficient bearer path establishment comprising:
- establishing a signaling anchor point in a first multimedia subsystem for an access signaling leg and a remote signaling leg for a call between a user element served by a visited circuit-switched subsystem and a remote endpoint; and
effecting establishment of at least part of a circuit-switched portion of a bearer path for the call via a first gateway in a second multimedia subsystem.
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Accused Products
Abstract
Call control for originating and terminating calls in a visited circuit-switched subsystem (CS) or home multimedia subsystem (MS) as well as transferring calls between the visited CS and the home MS may be anchored at a continuity control function (CCF) in the home MS. Call signaling for the call may be passed through the CCF. When the user element is homed to the home MS and served by the visited CS, the bearer path for the call is established based on the relative proximity of the home MS and the visited CS. When a local MS is more proximate to the visited CS, the bearer path may be routed through a gateway in the local MS, instead of through the gateway in the home MS. When the home MS is sufficiently proximate to the visited CS, the bearer path is routed through the gateway in the home MS.
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Citations
26 Claims
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1. A method of providing efficient bearer path establishment comprising:
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establishing a signaling anchor point in a first multimedia subsystem for an access signaling leg and a remote signaling leg for a call between a user element served by a visited circuit-switched subsystem and a remote endpoint; and
effecting establishment of at least part of a circuit-switched portion of a bearer path for the call via a first gateway in a second multimedia subsystem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A service node providing efficient bearer path establishment comprising:
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at least one communication interface; and
a control system associated with the at least one communication interface and adapted to;
establish a signaling anchor point in a first multimedia subsystem for an access signaling leg and a remote signaling leg for a call between a user element served by a visited circuit-switched subsystem and a remote endpoint; and
effect establishment of at least part of a circuit-switched portion of a bearer path for the call via a first gateway in a second multimedia subsystem. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification