In the paper, a new network architecture is presented forsingle-hop passive optical star networks. The objective is to simplifythe user stations as much as possible, thus giving an economical design.This is accomplished by using a set of distributed channel controllers,one for each WDM channel. The network will thus be referred to as DCCN(for distributed channel controller network). The channel controllersassist in the operation of the network in a number of ways. In thenetwork, the allocation of bandwidth is hierarchical and is achievedindependently on each channel. This simplification decouples systemoperation into two levels. At the higher level, bandwidth partitioningmay be done in a static or dynamic fashion. The lower level determinesthe dynamic use of slots. Two options for media access are proposed. Thefirst is a centralized approach based upon an “asynchronousrequest switch” design. The second is much more distributed. Eachset of competing stations builds a distributed queue based upon observedrequests. Capacity results are presented for the design and comparedwith other protocols. It is found that the proposed architecture hasmuch higher capacity than in many other networks with similar hardwarerequirements
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