초록 ▼

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 timin

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.

대표청구항 ▼

A method of transmitting information packets between a plurality of stations in a wireless local area network, comprising the following steps: (a) providing a plurality of local area network stations; (b) providing a distribution system for receiving packets transmitted by all said local area networ

A method of transmitting information packets between a plurality of stations in a wireless local area network, comprising the following steps: (a) providing a plurality of local area network stations; (b) providing a distribution system for receiving packets transmitted by all said local area network stations and for transmitting packets to all said local area network stations; (c) defining first, second and third wireless transmission channels, said first wireless transmission channel for transmitting packets from said distribution system to said local area network stations, and said second and third wireless transmission channels for transmitting packets from said local area network stations to said distribution system; (d) defining a transmission-enabling condition using said first wireless transmission channel; (e) transmitting from a local area network station which has a message to transmit, an information packet over said second wireless transmission channel in response to a transmission-enabling condition; (f) receiving a transmitted information packet at said distribution system; (g) retransmitting the received information packet from aid distribution system over said first wireless transmission channel; (h) comparing at any local area network station which has transmitted, the received retransmitted information packet with the information packet originally transmitted by that local area network station; (i) in the event of a comparison match, transmitting a further information packet over said second wireless transmission channel; (j) in the event of a comparison mismatch, transmitting a collision reporting packet from such local area network station over said third wireless transmission channel; (k) receiving a transmitted collision reporting packet at said distribution system; (l) transmitting a collision acknowledgment condition, in lieu of the information received over the second transmission channel, from said distribution system over said first wireless transmission channel; (m) terminating message transmission at all local area network stations which are transmitting, in response to said collision acknowledgment condition; and (n) returning to step (d).