Microcell system in digital cellular

Details Microcell system in digital cellular Microcell system in digital cellular

1991-04-02

1993-09-07

Chin, Wellington

Multiplex communications

Wide area network

Packet switching

370 951, 379 60, 379 63, 455 331, 455 333, 455 541, H04L 526, H04B 7208, H04B 7212, H04B 7216

Patent

active

052435989

ABSTRACT:
A cellular telephone system is described of the type wherein a plurality of contiguous cells, each having a different assigned set of transmission frequency channels, are arranged with handoff control for maintaining continuous communication with mobile telephones moving from cell to cell. The system allows multiple access by including assigning at least one of the frequencies in the assigned set of transmission frequencies to more than one mobile telephone. Three embodiments of the multiple access systems are disclosed. In one embodiment, a frequency division multiple access is used. In a second embodiment, a time division multiple access is used. In a third embodiment, a code division multiple access is used.

REFERENCES:
patent: 4785450 (1988-11-01), Bolgiano et al.
patent: 4797947 (1989-01-01), Labedz
patent: 4932049 (1990-06-01), Lee

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