Multichannel ring and star networks with limited channel conversion
AssigneeTellabs Operations, Inc.
InventorsRajiv Ramaswami, Galen Sasaki
Life of this patent
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Abstract
A ring communication network according to an embodiment of the present invention includes a plurality of nodes in which a single one of the nodes is configured for full channel conversion and the remaining nodes, other than the single node, are configured for no channel conversion. Links with no more than W channels couple the nodes. The ring communication network may include N nodes and links connecting the nodes for carrying data in W channels such that N≧2 log2 W−1, where W is a power of 2. Each of the N nodes includes switches connected such that each channel of a first one of the links adjacent to any one of the N nodes can be switched to no more than W−1 channels of another one of the links adjacent to any one node.
Claims22
A method of configuring a node comprising:
- adapting the node to connect to a ring network, the ring network including a plurality of nodes and a plurality of links;
- configuring the node for full channel conversion, full channel conversion being an ability to connect each of a plurality of channels on a first link to each of a plurality of channels on a second link;
- and
- adapting the node to connect through the first link to another node on the ring network that is configured for no channel conversion, no channel conversion being an ability to connect each of the plurality of channels on the first link to corresponding channels on a third link.
A node configuration comprising:
- a node adapted to be connected to a ring network including a plurality of nodes and a plurality of links, the node being configured for full channel conversion, full channel conversion being an ability to connect each of a plurality of channels on a first link to each of a plurality of channels on a second link, and adapted to be connected through the first link to another node on the ring network that is configured for no channel conversion, no channel conversion being an ability to connect each of the plurality of channels on the first link to corresponding channels on a third link.
A method of configuring a node comprising:
- adapting the node to connect to a first and a second link on a ring network, the links each having more than two channels, the node including a switch;
- and
- configuring the node so that each of the more than two channels on the first link can be switched to no more than two of the more than two channels on the second link.
A node comprising:
- an input port to which a first link on a ring network can be connected, the first link having more than two channels;
- an output port to which a second link on the ring network can be connected, the second link having more than two channels;
- and
- a switch configured to couple each of the more than two channels on the first link to no more than two of the more than two channels on the second link.
Dependencies are inferred from the claim text.