Method of resolving media contention in radio communication link

Details Method of resolving media contention in radio communication link Method of resolving media contention in radio communication link

1994-02-08

1995-11-28

Kizou, Hassan

Multiplex communications

Wide area network

Packet switching

370 952, 370 953, 375202, H04B 1713, H04J 1306

Patent

active

054714699

ABSTRACT:
In a wireless packet communication system having a plurality of nodes, each having a transmitter and a receiver, the receiver at each node is assigned a specific frequency hopping band plan on which to receive signals, and the transmitter of any source node desiring to communicate with a target node changes frequency to the frequency of the target node according to the band plan. Thereupon, the source node transmits a poll packet which polls the target node to determine whether the target node is able and willing to accept a specified number of packets, at a specified level of priority. A failure to receive an acknowledgement on the source node's receive channel is a prompt to the source node either to retransmit a polling packet later, to change the polling packet or to redirect the polling packet to another target. In the event the target node returns an acknowledgement, the target node reserves access to itself for the polling station at a determined time for a determined duration. The source node then transmits its data packet on the target node receive channel and waits for an acknowledgement on its own receive channel. The source node and the target node exchange information on the agreed upon data exchange channel, even though the expected receive channel according to the frequency hopping band play of the target node may have changed in the meantime.

REFERENCES:
patent: 4554668 (1995-09-01), Deman et al.
patent: 4850036 (1989-07-01), Smith
patent: 5079768 (1992-01-01), Flammer
patent: 5130987 (1992-07-01), Flammer

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