METHOD AND APPARATUS FOR MULTIPLE ACCESS COMMUNICATION

摘要

A communication system and method requiring minimal adaptation of TDD equipment to support an FDD frame structure, includes a novel frame structure by which a plurality of user stations (102), each having a single frequency synthesizer, communicate with a base station (401). According to the frame structure (501), a time frame comprises a plurality of time slots each divided into a first time segment and a second time segment. Transmission from user stations (102) are sent over the user transmission frequency band, and alternate in time with transmissions from the base station sent over the base transmission frequency band in a manner to provide adequate transmit/receive switching (817) time for the user stations.