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Title:
MOBILE COMMUNICATION DEVICE AND CHANNEL QUALITY INDEX INFERRING METHOD
Document Type and Number:
WIPO Patent Application WO/2012/093675
Kind Code:
A1
Abstract:
Provided are a mobile communication device and a method for inferring a channel quality index, with whichoptimal channel quality index inference processing can be performed in mobile communication using TDD. The noise power of a reception signal and signal power inference values are obtained using a known signal which is included in a slot unit on the time axis and a sub-band unit that is a continuous fixed frequency bandwidth on the frequency axis. From among the inference values, a plurality of n inference values inferred at slot units are subjected to time-averaging processing at each sub-band. Time directional errors of the known signal are calculated in slot units. Based on a predetermined threshold value and differences in errors of adjacent slots from among the time directional errors, weighting coefficients are set for each of the n inference values in the time-average processing performed by a time-average power calculation means.

Inventors:
SHIMANUKI NORIYUKI (JP)
Application Number:
PCT/JP2012/050032
Publication Date:
July 12, 2012
Filing Date:
January 04, 2012
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Assignee:
NEC CASIO MOBILE COMM LTD (JP)
NTT DOCOMO INC (JP)
SHIMANUKI NORIYUKI (JP)
International Classes:
H04J11/00; H04J1/00; H04W88/02
Foreign References:
JP2010021642A2010-01-28
JP2004007793A2004-01-08
JP2006197416A2006-07-27
JP2008141313A2008-06-19
JP2010161650A2010-07-22
Attorney, Agent or Firm:
IAT WORLD PATENT LAW FIRM (JP)
Eye アット international patent business corporation (JP)
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