Cell extension in a cellular telephone system

Details Cell extension in a cellular telephone system Cell extension in a cellular telephone system

1992-03-30

2000-08-08

Nguyen, Chau

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

370508, H04B 701

Patent

active

061011770

ABSTRACT:
In a cellular telephone system of the type having TDMA channels, the beginnings of the time slots of an uplink transmission as seen in the base station are offset from the beginnings of the time slots of a downlink transmission as seen in the base station by a predetermined amount. By offsetting the beginnings of the time slots, a mobile station is able to operate at an extended distance from the base station without any modifications to the mobile station. Because the mobile stations can operate at a greater distance from the base station without a decrease in the number of available channels, the cellular telephone system is particularly suitable for use in rural areas or coastal areas.

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GSM Recommendation 05.01, version 3.3.1, dated Jan. 1990, entitled, "Physical Layer on the Radio Path: General Description".
GSM Recommendation 05.02, version 3.5.0, release date Jan. 1991, entitled, "Multiplexing and Multiple Access on the Radio Path".
GSM Recommendation 05.10, version 3.5.0, release date Jan. 1991, entitled, "Radio Sub-System Synchronization".

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