Signaling Requirements to Support Interference Coordination in OFDMA Based Systems
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United States of America Patent
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Issued Date -
Aug 2, 2007
app pub date -
Jan 25, 2007
filing date -
Jan 31, 2006
priority date (Note) -
Abandoned
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Abstract
The invention provide methods for classifying user equipments (UEs) communicating with a serving base station (Node B) according to their experienced average interference in subsets of frequency or time resources. The classification utilizes existing channel quality indication (CQI) reports the UEs send to their serving Node B for the purposes of data scheduling. Multiple CQI reports are averaged to practically eliminate short term variations caused by fast fading and capture the long term interference and signal-to-interference and noise ratio (SINR) that the UEs experience. By capturing this average interference and SINR, a reference Node B can apply interference co-ordination through fractional frequency reuse or fractional time reuse.
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