Patent ID: 7460631
Filing Date: 2008-12-02
Classification: H04B,H04J,H04L,H04W

Abstract:
1. A timing control apparatus installed in each of a plurality of nodes constituting a communication system, the nodes being arranged in a grid, the timing control apparatus including a communication timing calculator for determining timings of data transmission from its own node according to variations in a phase state internal to the node, the communication timing calculator comprising: a phase calculator for varying a phase state of its own node according to a time series rule based on a predetermined phase response function and a predetermined synchronization alliance function, according to reception of state variable signals from neighboring nodes, the state variable signals representing a phase indicating a timing of data transmission from the neighboring nodes; a collision rate calculator for observing phase differences between its own node and the neighboring nodes and calculating a collision rate representing a rate of collision between timings of data transmission from its own node and timing of data transmission from the neighboring nodes; a phase response function characteristic determiner for altering characteristics of the phase response function according to the collision rate and to positional information included in the state variable signals, the positional information indicating positions of the neighboring nodes; and a synchronization alliance unit for altering characteristics of the synchronization alliance function according to the positional information included in the state variable signals.