Mobile battery discharge minimization in indoor wireless networks by antenna switching
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United States of America Patent
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-
Jul 15, 2003
Grant Date -
N/A
app pub date -
Sep 9, 1999
filing date -
Sep 9, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus minimize battery discharge of mobile communication devices in short range wireless radio communication networks by switching receiving antennas to minimize transmitted power for a mobile communication device. Multiple receiving antennas and at least one transmitting antenna are used. The receiving antennas are switched for each mobile communication device to minimize transmitted power required by a mobile communication device. Switching between receiving antennas is accomplished by measuring power of a signal received from a mobile communication device at each receiving antenna, and selecting a receiving antenna based on the measured power. A database of switchings is maintained for the mobile communication devices, and an initial selection of a receiving antenna is based on the last switching or a trend indicated by most recent switchings. Alternatively, the initial switching is to a centrally located receiving antenna.
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