Patent ID: 6222851
Filing Date: 2001-04-24
Classification: H04L

Abstract:
An adaptive tree-based contention resolution method for a local area network using orthogonal frequency division multiplexing and comprising a plurality of nodes, including the steps of:(a) transmitting from each contending node a node identifier during a contention frame;(b) determining from all node identifiers transmitted during the contention frame a set of resolution bits for each contending node;(c) transmitting the sets of resolution bits during a resolution frame;(d) applying the sets of resolution bits transmitted during the resolution frame to determine if there is no further contention by other contending nodes with respect to a particular contending node, and if so, enabling such particular contending node to transmit data;(e) otherwise, applying the sets of resolution bits transmitted during the resolution frame to further resolve contention between at least two remaining contending nodes;(f) repeating steps (a)-(e) for the remaining contending nodes.