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AssigneeMCI Communications Corporation
InventorWill Russ
Estimating the term…
In a self healing network (SHN) distributed restoration algorithm (DRA) scheme, in the case where two adjacent tandem nodes are contending for the same spare link, an arbitration scheme is used to determine which tandem node has the right to reserve the spare link for its use. The arbitration scheme entails a pre-event knowledge by each of the tandem nodes of the transmission time therebetween. A tandem node link arbitration timer in each of the adjacent nodes provides a predefined time period for which a node can compare whether it had begun sending out its flooding signature before the far end node had sent out its. Thus, when a node detects a newly arrived signature received from the spare link that connects the node to its far end node, and if this newly arrived signature is detected before the predefined time period has elapsed, then the node will give up the spare link for the use of the far end node. Alternatively, if the signature, if any, from the far end node is detected by the node only after the predefined time has elapsed, then the node will reserve the connecting spare link for its own use.
A method of arbitrating which of two adjacent nodes of a telecommunications network is entitled to use a spare link for restoring traffic disrupted by a failure of said network if both of said adjacent nodes are contending for said spare link, comprising the steps of:
In a telecommunications network having a plurality of nodes, a method of preventing messages being flooded by two nodes into a spare link sandwiched therebetween at substantially the same time, comprising the steps of:
A method of deciding whether a node is entitled to the exclusive use of a spare link connecting it to a far end node when both said node and said far end node are contending for said spare link, comprising the steps of:
In a telecommunications network having a plurality of nodes and multiple links including spare links connecting said nodes, apparatus for deciding whether a node is entitled to the exclusive use of a spare link connecting said node to a far end node when both said node and said far end node are contending for said spare link, comprising:
System for arbitrating which of two adjacent nodes of a telecommunications network is entitled to use a spare link for restoring traffic disrupted by a failure of said network if both of said adjacent nodes are contending for said spare link, composing:
In a telecommunications network having a plurality of nodes connected by multiple circuits including spare links, apparatus for preventing messages flooded by two nodes into a spare link sandwiched therebetween at substantially the same time for beginning a process of restoring traffic disrupted by a failure in said network, comprising:
Dependencies are inferred from the claim text.