Method and system for performing service admission control

1. A method at a base station device for performing service admission control, said base station device being adapted to provide a service access to devices of a cellular network, said service being provided through a broadband network, wherein the method comprises:

connecting to said cellular network by the base station via a first interface;

receiving, by said base station device, an admission request emitted by a device of the cellular network, said admission request identifying a requested service and comprising an indication of a priority level of the requested service;

connecting to a broadband device by the base station via a second interface, the broadband device being configured to grant services according to a priority level so that, when a service with low priority has been granted and a service with higher priority is requested later on, the service with low priority is cancelled in order to grant the high priority service in case the resource is not able to support both the service with low priority and the service with high priority;

sending a broadband link capacity request emitted by said base station device, to the broadband device for verifying a link capacity is available on a connection between the broadband device and the broadband network for said service;

connecting to the broadband network by said broadband device via a third interface;

receiving, by said base station device, from the broadband device in response to the broadband link capacity request, a link capacity response conveying the link capacity available on the connection between the broadband device and the broadband network;

sending a capacity allocation request by said base station device to request from the broadband device whether there is capacity available on the connection between the broadband device and the broadband network;

when the link capacity is available, granting the capacity allocation request by the broadband device by taking into account the priority level of the requested service;

when the link capacity is not available, denying the capacity allocation request by the broadband device by taking into account the priority level of the requested service;

determining, by said base station device, whether to grant or deny admission to the requested service based on the capacity allocation response of said broadband device; and

sending, in response to the admission request, a service admission response emitted by said base station device, to the device of the cellular network.

2. The method of claim 1 , further comprising on interruption of a service on a device on the cellular network, indicating, by said base station device, said interruption to the broadband device.

3. The method according to claim 1 , wherein the base station device is a femtocell.

4. The method according to claim 1 , wherein the base station device is comprised in the broadband device.

5. A method at a broadband device for performing service admission control, wherein the method comprises:

connecting to a broadband network by the broadband device via a first interface, the broadband device being configured to grant services according to a priority level so that, when a service with low priority has been granted and a service with higher priority is requested later on, cancelling the service with low priority and granting the service with high priority in case a resource is not able to support both the service with low priority and the service with high priority;

connecting to a base station by said broadband device via a second interface;

connecting to a cellular network by said base station via a third interface;

receiving, by said broadband device, a broadband link capacity request emitted by said base station device for verifying that link capacity is available on a connection between the broadband device and the broadband network for the service associated with the priority level, said service being requested by a device of the cellular network;

aborting the service with the low priority already granted for the service with high priority, in case the resource for the requested service is not available on the broadband network; and

sending a link capacity response emitted by said broadband device, to said base station device, said response conveying the link capacity available on the connection between the broadband device and the broadband network,

receiving a capacity allocation request from said base station device to request to the broadband device whether there is capacity available or not available on the connection between the broadband device and the broadband network:

when the link capacity is available, granting the capacity allocation request by the broadband device by taking into account the priority level of the requested service;

when the link capacity is not available denying the capacity allocation request by the broadband device by taking into account the priority level of the requested service;

wherein said base station device determines whether to grant or deny admission to the requested service based on said capacity allocation response of the broadband device;

when said resource is available on the broadband network, granting the service based on the capacity allocation response of the broadband device; and

when said resource is not available on the broadband network, deny granting the service.

6. The method according to claim 5 , further comprises indicating, by said broadband device, the broadband link state to said base station device.

7. The method according to claim 5 , wherein the broadband device is connected to more than one base station device where each base station device has a priority level, and that said admission response depends on the base station device priority.