Deterministic multi-access method for a decentralized mobile rad

Details Deterministic multi-access method for a decentralized mobile rad Deterministic multi-access method for a decentralized mobile rad

1983-09-06

1985-08-06

Ng, Jin F.

Telecommunications

Carrier wave repeater or relay system

Plural modulated carriers

455 32, 455 34, 455 54, H04B 714, H04B 700

Patent

active

045340617

ABSTRACT:
A mobile radio system uses a predetermined number of control channels over which a hand-shake routine is performed to determine called station availability, before one of a limited number of talk channels (local and repeater) is assigned for communication between a calling and the called station. After locating an idle talk channel (local channels are searched first), the control channel to which the called station is predeterminedly assigned is attempted to be accessed. Transmission times on the control channel are a function of the called station's identification code, thus creating a logical ring. Provision is made for message based priorities, emergency numbers and high priority for stations having experienced a previous unsuccessful attempt to access a control channel.

REFERENCES:
patent: 3634627 (1972-01-01), Velentini
patent: 4281413 (1981-07-01), Forrest
patent: 4360927 (1982-11-01), Bowen et al.
patent: 4400585 (1983-08-01), Kaman et al.
patent: 4409687 (1983-10-01), Berti et al.

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