Base station with time-aligned mobile transmitting moments according to distance to base station
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United States of America Patent
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Sep 16, 1997
Grant Date -
N/A
app pub date -
Jan 5, 1996
filing date -
Jul 5, 1993
priority date (Note) -
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Abstract
For increasing the radius of the effective service area of a base station in a digital time division multiple access (TDMA) radio network, a first transceiver is provided for communicating with mobile radio stations only within a radially outer annular region, and a second transceiver is provided for communicating with the mobile radio stations within a central region a radially outer marginal portion of which overlaps with a radially inner marginal portion of the outer annular region. Timing offsets between transmissions from the base station transceivers and transmissions from the mobile stations being such that respective transmissions are received within proper time slots despite that the outer radius of radially outer annular region would necessitate a larger than workable time delay were the first transceiver used by itself for serving the entire radial extent of the respective composite effective coverage areas of the first and second transceivers.
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