Multiplex communications – Wide area network – Packet switching
Patent
1994-05-16
1995-07-25
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
455 541, 34082508, H04B 726
Patent
active
054369053
ABSTRACT:
A method to provide improved medium access control (MAC) protocol for a wireless local area network (LAN) comprising the steps of: (a) pre-arranging a polling cycle to be broadcast from the base station into a sequence of broadcast groups, (b) assigning each active mobile node to a randomly chosen broadcast group, (c) performing a group randomly addressed polling for each of the broadcast groups, and (d) assigning uncollided mobile nodes to their original randomly chosen broadcast group address. The uncollided mobile nodes will also be given the privilege of keeping their random numbers as fixed random numbers, until they collide with other mobile node(s) in subsequent polling cycle(s). All the collided mobile nodes, all newly active mobiles, and all newly joined mobile nodes are subject to a new polling cycle. The method has shown to provide excellent throughput (better than 0.90), stable convergence, and excellent delay behavior.
REFERENCES:
patent: 4667193 (1987-05-01), Cotie et al.
patent: 5010329 (1991-04-01), Nagakura
patent: 5053883 (1991-10-01), Johnson
patent: 5373503 (1994-12-01), Chen
Chen Kwang-Cheng
Li Meng-Che
Blum Russell W.
Industrial Technology Research Institute
Lianh W. Wayne
Olms Douglas W.
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