Method and apparatus that facilitates interference cancellation for control channels in heterogeneous networks
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United States of America Patent
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Jan 28, 2014
Grant Date -
May 30, 2013
app pub date -
Jan 18, 2013
filing date -
Jul 22, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Aspects are described for reducing interference in wireless systems. In a first embodiment, an uplink acknowledgment region associated with a macro cell is determined, and an assignment of uplink control resources is restricted to a region within the uplink acknowledgment region. A control signal is then transmitted to user equipment via the assignment of uplink control resources. In another embodiment, control signals are received from wireless terminals, which include desired uplink control signals associated with an access point base station, as well as interfering uplink acknowledgement signals associated with macro cells. The control signals may then be regenerated by cancelling the set of interfering signals from the control signals. The desired uplink control signals are then decoded.
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