Random access data communication system with slot assignment cap

Details Random access data communication system with slot assignment cap Random access data communication system with slot assignment cap

1992-07-15

1994-04-12

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 941, 370 953, H04J 326

Patent

active

053032349

ABSTRACT:
In a random access communication system comprising a central station and user stations, each user station transmits a packet to the central station on a randomly selected timeslot of a time-division multiple access channel and defines a plurality of "minislots" within the selected timeslot and transmits a burst on one of the minislots. The central station monitors the defined monislots to detect the burst transmission, and assigns as many timeslots as required if more than one burst transmission is detected within a timeslot interval. A slot assignment signal is sent from the central station to the user stations containing a negative acknowledgment of the transmitted packet. The user station from which the packet was transmitted is responsive to the negative acknowledgment to select one of the assigned timeslots and retransmit to the central station a copy of the packet on the selected assigned timeslot.

REFERENCES:
patent: 4641304 (1987-02-01), Raychaudhuri
patent: 5012469 (1991-04-01), Sardana

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