Method and apparatus for synchronizing AAL2 path states
AssigneeAlcatel Lucent
InventorsJian Yang, Xuling Xiao
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Abstract
The present invention provides a method and apparatus of synchronizing AAL2 path states between ATM adaptation layer type 2 (AAL2) signaling nodes, wherein a AAL2 signaling node as a synchronization requesting end sends a path state request message to a peer AAL2 signaling node of an AAL2 path, the peer AAL2 signaling node performs local check on the state of the AAL2 path designated by the request message after receiving the request message, and the peer AAL2 signaling node controls consistency synchronization processing on the AAL2 path states at two ends based on the result of the check. The present invention may avoid initial call failure incurred by inconsistency between states at two ends of an AAL2 path and improves success ratio of AAL2 path establishment.
Claims16
A method of synchronizing AAL2 (ATM adaptation layer type 2) path states between AAL2 signaling nodes, comprising steps of:
- a) sending, by a AAL2 signaling node as the synchronization requesting end, a path state request message to a peer AAL2 signaling node of an AAL2 path;
- b) performing, by the peer AAL2 signaling node, local check on the state of an AAL2 path designated by the request message after receiving the request message;
- c) controlling, by the peer AAL2 signaling node, consistency synchronization processing on the AAL2 path states at two ends based on the result of the check,
- wherein the controlling step is initiated at a time when the local AAL2 path state of the peer AAL2 signaling node is one of “idle,” “peer block” and “local block”.
An AAL2 (ATM adaptation layer type 2) signaling node, comprising:
- sending means configured to send a path state request message to a peer AAL2 signaling node;
- controlling means configured to perform consistency reset to the path state of the present AAL2 signaling node based on a response from the peer AAL2 signaling node,
- wherein the performing of the consistency reset, by the controlling means, is initiated at a time when the local path state of the peer AAL2 signaling node is one of “idle,” “peer block” and “local block”.
An AAL2 (ATM adaptation layer type 2) signaling node, comprising:
- receiving means configured to receive a path state request message sent from an AAL2 signaling node;
- controlling means configured to perform local check on the state of an AAL2 path designated in the request message and control consistency synchronization processing on the AAL2 path states at two ends based on the result of the check,
- wherein the controlling of the consistency synchronization processing is initiated at a time when the local AAL2 path state is one of “idle,” “peer block” and “local block”.
A method of synchronizing AAL2 (ATM adaptation layer type 2) path states in an AAL2 signaling node, comprising steps of:
- step a), sending a path state request message to a peer AAL2 signaling node;
- step b), performing consistency reset to the path state of present AAL2 signaling node based on a response from the peer AAL2 signaling node,
- wherein the performing of the consistency reset is initiated at a time when the local path state of the peer AAL2 signaling node is one of “idle,” “peer block” and “local block”.
A method of synchronizing AAL2 (ATM adaptation layer type 2) path states in an AAL2 signaling node, comprising steps of:
- a2), receiving a path state request message sent from an AAL2 signaling node;
- b2), performing local check on a designated AAL2 path state based on the request message and controlling consistency synchronization processing on the AAL2 path states at two ends based on the result of check,
- wherein the controlling of the consistency synchronization processing is initiated at a time when the local AAL2 path state is one of “idle,” “peer block” and “local block”.
Dependencies are inferred from the claim text.