Time-division multiple-access communication system
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United States of America Patent
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-
Aug 27, 2002
Grant Date -
N/A
app pub date -
May 11, 1998
filing date -
May 12, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention is directed to a TDMA communication system which is adapted to different communication environments or prepares different communication environments and allows each mobile station to be set for working in any one of the different communication environments. The communication system commonly uses a TDMA format that has a fixed frame-length and a constant number of bits for each of the slots composing the frame. The communication environments have prepared respective sets of communication conditions, each set including a transmission power, a modulating method, the number of multiplexed signals, error-correction, an antenna gain, a frequency hopping value and a diversity value. At each mobile station and each base station, one of plural sets of communication conditions for respective environments is selected to establish communication with each other under the selected environment.
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