Patent ID: 6097707
Filing Date: 2000-08-01
Classification: H04W

Abstract:
In a single channel, star configuration, wireless digital communication network of cellular topology wherein a central unit is radio frequency linked to a plurality of remote units and multiple access is synchronously controlled by the central unit through a time division multiplexed cycle,wherein the improvement comprises:the cycle having a total cycle time of variable duration divided into two phases, one phase being an up-link phase and the other phase being a down-link phase which follows the up-link phase, each phase having a plurality of time slots in which information is transferred from the central unit to the remote units and from the remote units to the central unit,in the up-link phase, a variable number of fixed size data transfer time slots, each pre-assigned on request of a remote unit in an up-link phase of an immediately preceding cycle for use by the requesting remote in uploading data to the central unit in the up-link phase of the next succeeding cycle, andin the down-link phase, a variable number of variable size data transfer time slots for downloading data from the central unit to selected ones of the remote units.