Method of transmitting selected message frames without individual destination address in non-overlapping sequential time intervals from host computer to terminals via bridges and retransmitting thereafter
First Claim
1. A method of transmitting message frames from a host computer to a plurality of terminals comprising the steps of:
- (a) providing first, second, to nth bridges communicating via respective first ports with said host computer and communicating via respective second ports over a common wireless communication channel with respective wireless local area networks containing respective pluralities of said terminals;
(b) transmitting said message frames from said host computer to said first, second, to nth bridges;
(c) transmitting, when said common wireless communication channel is clear, selected message frames from said first, second, to nth bridges over said wireless communication channel so that each selected message frame is transmitted in non-overlapping sequential time intervals by all of said first, second, to nth bridges so as to avoid the possibility of collisions at a said terminal of one wireless local area network with a said terminal of an adjacent wireless local area network; and
(d) retransmitting said selected message frames from said first, second, to nth bridges over said wireless communication channel so that each selected message frame is transmitted in non-overlapping sequential time intervals by all of said first, second, to nth bridges so as to avoid the possibility of collisions at a said terminal of one wireless local area network with a said terminal of an adjacent wireless local area network;
said providing step (a) being effected by;
(a-1) interconnecting said host computer and said bridges in a wired local area network; and
said transmitting step (b) being effected by;
(b-1) utilizing a control field included in said message frames to indicate that said selected message frames are unnumbered information frames and contain no individual destination address and that said transmitting and retransmitting steps (c) and (d) are effected upon only said selected message frames.
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0 Petitions
Accused Products
Abstract
A local area network system (10) includes a host computer (14) connected in a wired LAN (12) with a plurality of bridges (18). The bridges (18) further connect with respective wireless LANs (100, 200, . . . , 600) which operate on a common wireless communication channel and contain respective pluralities of terminals (102, 202, . . . , 602). When a download operation is effected for initially starting up a new added terminal (e.g. 102-1), the bridges (18) are adapted to identify download message frames issued by the host computer (14) and retransmit each such frame (400) over the wireless communication channel in non-overlapping time intervals by applying respective different delays. Also, each download message frame is transmitted twice by each of the bridges (18).
48 Citations
2 Claims
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1. A method of transmitting message frames from a host computer to a plurality of terminals comprising the steps of:
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(a) providing first, second, to nth bridges communicating via respective first ports with said host computer and communicating via respective second ports over a common wireless communication channel with respective wireless local area networks containing respective pluralities of said terminals; (b) transmitting said message frames from said host computer to said first, second, to nth bridges; (c) transmitting, when said common wireless communication channel is clear, selected message frames from said first, second, to nth bridges over said wireless communication channel so that each selected message frame is transmitted in non-overlapping sequential time intervals by all of said first, second, to nth bridges so as to avoid the possibility of collisions at a said terminal of one wireless local area network with a said terminal of an adjacent wireless local area network; and (d) retransmitting said selected message frames from said first, second, to nth bridges over said wireless communication channel so that each selected message frame is transmitted in non-overlapping sequential time intervals by all of said first, second, to nth bridges so as to avoid the possibility of collisions at a said terminal of one wireless local area network with a said terminal of an adjacent wireless local area network; said providing step (a) being effected by; (a-1) interconnecting said host computer and said bridges in a wired local area network; and said transmitting step (b) being effected by; (b-1) utilizing a control field included in said message frames to indicate that said selected message frames are unnumbered information frames and contain no individual destination address and that said transmitting and retransmitting steps (c) and (d) are effected upon only said selected message frames. - View Dependent Claims (2)
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Specification