Multichannel, multihop lightwave communication network

Details Multichannel, multihop lightwave communication network Multichannel, multihop lightwave communication network

H - Electricity

04

J

325/1, 344/28

H04J 14/00 (2006.01) H04J 14/02 (2006.01) H04L 12/28 (2006.01)

Patent

CA 1287911

-15- A MULTICHANNEL, MULTIHOP LIGHTWAVE COMMUNICATION NETWORK Abstract The present invention relates to a multichannel multihop lightwave communication network which allows packet concurrency in the network while avoiding the need for agile optical devices. The network comprises a lightwave communication medium (10) for supporting a plurality of independent user nodes; and a plurality of N network interface units (NIUs) (11). Each NIU is connected to the lightwave medium and one or more separate user nodes and comprises a transmitter section (28-35) and a receiver section (20-27) which are each fixedly assigned to transmit and receive, respectively, over a single channel or a plurality of separate channels to or from other NIUs of the network. In a connectivity pattern for one embodiment of the network, the NIUs are divided into k groups of pk NIUs such that each NIU of a first group oî pk NIUs is capable of transmitting over the flxedly assigned single channel, or any or all of the p separate channels, to a preferred one or all of the associated p separate NIUs of a second group, etc. based on a generalization of a perfect shuffle pattern. Such technique permits all NIUs of the network to communicate with all other NIUs either via a single hop or via multiple hops where NIUs in subsequent groups Of pk NIUs act as intermediate retransmission units.

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