Method and apparatus for stable call preservation
AssigneeLucent Technologies Inc.
InventorsDale F. Rathunde, Antonio J. M. Ransom
Life of this patent
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Abstract
A method and apparatus for preserving call-state information on a wireless communication system is provided. The method includes periodically replicating stable call call-state information between a first and second processor via a network connection. The method also includes performing a transient clear to drop transient calls in existence at the time of an outage of an active first RCS application process or processor. The method also includes forming network-based active call facilities paths to a second RCS application instance and transitioning the second RCS application instance to an active state thereby avoiding a service interruption for the stable calls previously handled by the active first RCS application instance.
Claims20
A method for preserving call-state information on a wireless communication system having a plurality of cells for providing wireless communication services to wireless terminals, and a first and second application processor each having host memories, the method comprising:
- running a first Radio Control Software (RCS) application instance in active operation on the first application processor communicating with a group of the cells via network-based active call facilities paths for handling the radio control signaling and Office Administration & Maintenance (OA&M) of the group of the cells;
- running a second RCS application instance in standby operation on the second application processor;
- replicating stable call call-state information between the first processor and the second processor via a network connection before an outage of at least one of the first processor and the first RCS application instance;
- transitioning the second RCS application instance to an active state for handling the radio control signaling of the group of the cells thereby avoiding a service interruption for the stable calls previously handled by the active first RCS application instance;
- performing a transient clear after the outage to drop transient calls in existence at the time of the outage;
- and
- forming network-based active call facilities paths between the second RCS application instance and the group of the cells.
A wireless communication system capable of preserving call-state information comprising:
- a plurality of cells for providing wireless communication coverage to a plurality of wireless terminals;
- a first application processor having call-state data buffers and running a first active Radio Control Software (RCS) application instance communicating with a group of the cells via network-based active call facilities paths for handling the radio control signaling and Office Administration & Maintenance (OA&M) for the group of the cells;
- a second application processor connected to the first application processor via a first network connection, the second application processor having call-state data buffers and running a standby RCS application instance;
- replicating means for replicating stable call call-state information between the first processor and the second processor via the network connection before an outage of at least one of the first application processor and the first active RCS application instance;
- means for performing a transient clear after the outage to drop transient calls in existence at the time of the outage;
- switching means for forming network-based active call facilities paths between the second RCS application instance and the group of the cells;
- and
- transitioning means for transitioning the standby RCS application instance to the active state for handling radio control signaling and OA&M for the group of the cells to avoid a service interruption for stable calls previously handled by the active first RCS application instance.
A method for preserving call-state information on a wireless communication system having a plurality of cells for providing wireless communication services to wireless terminals, a first application processor running an active first Radio Control Software (RCS) application instance and second application processor running a standby RCS application instance, the method comprising:
- replicating stable call call-state information between the first processor and the second processor via a network connection before an outage of at least one of the first processor and the first RCS application instance;
- transitioning the second RCS application instance to an active state for handling the radio control signaling of a group of the cells thereby avoiding a service interruption for the stable calls previously handled by the active first RCS application instance;
- and
- performing a transient clear after the outage to drop transient calls in existence at the time of the outage.
Dependencies are inferred from the claim text.