Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2005-04-29
2009-06-09
Lee, John J (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S069000, C455S517000, C455S127100
Reexamination Certificate
active
07546136
ABSTRACT:
In communication systems that send transmit power control (TPC) commands in one direction so that only enough transmit power is used to maintain sufficient quality in the opposite direction, the TPC commands can be used to obtain information about the quality of the opposite-direction link. If there is sufficient quality, the number of TPC “up” commands is about the same as the number of TPC “down” commands, and if there is poor quality, more TPC “up” commands are received than “down” commands. A user equipment can use this information to adjust its TPC strategy and reduce the risk of poor reception and loss of synchronization to a communication node, such as a serving node for high-speed downlink packet access.
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Lee John J
Potomac Patent Group PLLC
Telefonaktiebolaget L M Ericsson (publ)
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