WIRELESS INFORMATION TRANSMISSION SYSTEM

摘要

A wireless local area network (10) includes a plurality of stations (12) adapted to transmit and receive message packets via a distribution system (30). In a time division multiplexing embodiment the network (10) operates using successive timing frames (FR1, FR2, etc.) each consisting of three timing intervals (T1, T2, T3). During the first timing interval (T1) the distribution system (30) normally transmits synchronizing packets (HBT), to which a station (12) desiring to transmit responds by transmitting an information packet during the next second timing interval (T2). During the subsequent first timing interval (T1), the distribution system (30) retransmits the received information packet. Any transmitting station (12) which detects an information packet mismatch transmits a collision reporting code (CDT) during the next third timing interval (T3) to which the distribution system (30) responds by transmitting a collision acknowledgement code (CAKT) to all the stations (12) thereby aborting information transmission. A frequency division multiplexing embodiment is also disclosed.