Uplink power control for multiple transmit antennas
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United States of America Patent
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Jun 11, 2013
Grant Date -
Feb 24, 2011
app pub date -
Aug 2, 2010
filing date -
Aug 4, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Techniques for controlling the transmit power of a user equipment (UE) using multiple antennas for uplink transmission are described. In one design, the UE receives at least one transmit power control (TPC) command for the multiple antennas. The UE adjusts the transmit power for each antenna based on the TPC command(s). In one design, the UE receives a single TPC command for all antennas and adjusts the transmit power for each antenna based on this TPC command. All antennas may then have equal transmit power. In another design, the UE receives multiple TPC commands for multiple antenna groups, one TPC command for each antenna group. Each antenna group may include one antenna or more than one antenna. The UE adjusts the transmit power for each antenna group based on the TPC command for that antenna group. All antennas in each antenna group may have equal transmit power.
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