Method of searching for available path in mesh architecture
First Claim
1. A method of searching for an available path within a mesh architecture of a transmission system including a plurality of nodes having a plurality of paths connected to a mesh network, comprising the steps of:
- in setting a shortest path between first and second nodes;
registering first data associated with a transmission path connected to a first relay node adjacent to said first node, and constituting a transmission path included in said shortest path, as path management data for said first node, in a path management table;
registering second data associated with a transmission path connected to a node adjacent to each relay node present on the shortest path as path management data for said each relay node apparatus, in said path management table;
wherein said path management data contains only said single adjacent path, included in said shortest path, for each target node registered for each of the nodes; and
searching for an available path between said nodes on the basis of the path management data in said path management table.
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Abstract
A method of searching for an available path in a mesh architecture in a multinode transmission system having a plurality of node apparatuses is disclosed. In setting a shortest path between first and second node apparatuses, the identity of a destination node and the immediate adjacent path along the shortest path from a source node are registered as path management data, for the source node, in a path management table. The identity of a destination node and the immediate adjacent path along the shortest path from each relay node is registered as path management data, for each relay node, in a path management table. Searching for an available path between two node apparatuses is performed on the basis of the path management data in the path management table. By limiting each data registration for each respective node to a destination and immediate path, the memory space for maintaining path management and control and the time required to search for an available path are reduced.
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Citations
15 Claims
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1. A method of searching for an available path within a mesh architecture of a transmission system including a plurality of nodes having a plurality of paths connected to a mesh network, comprising the steps of:
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in setting a shortest path between first and second nodes; registering first data associated with a transmission path connected to a first relay node adjacent to said first node, and constituting a transmission path included in said shortest path, as path management data for said first node, in a path management table; registering second data associated with a transmission path connected to a node adjacent to each relay node present on the shortest path as path management data for said each relay node apparatus, in said path management table; wherein said path management data contains only said single adjacent path, included in said shortest path, for each target node registered for each of the nodes; and searching for an available path between said nodes on the basis of the path management data in said path management table. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of searching for an available path within a mesh architecture of a transmission system including a plurality of nodes having a plurality of paths connected to a mesh network, comprising the steps of:
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in setting a shortest path between first and second nodes; registering first data associated with a transmission path connected to a first relay node adjacent to said first node, and constituting a transmission path included in said shortest path, as path management data for said first node, in a path management table; registering second data associated with a transmission path connected to a node adjacent to each relay node present on the shortest path as path management data for said each relay node apparatus, in said path management table; searching for an available path between said nodes on the basis of the path management data in said path management table; and erasing path management data from said path management table when a corresponding transmission path registered in said path management table is not used within a predetermined period of time. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification