Hong Kong Applied Science and Technology Research Institute Company Limited
发明人:
DING Jiewei,KWAN Man Wai,ZHANG Jihui,TSANG Kong Chau
申请号：
US201514716887
公开号：
US2016344488(A1)
申请日:
2015.05.20
申请国别(地区):
美国
年份:
2016
代理人:
摘要：
This invention provides a method for a first communication device, such as a base station, to estimate a channel-quality profile of a channel when a second communication device, e.g., a user equipment, returns only channel-quality indicators (CQIs) of selected subbands and a wideband CQI. The profile is obtained by including, for any two neighboring frequencies of the selected subbands, an estimated CQI of a middle frequency between the two neighboring frequencies. After translating the CQIs of the two neighboring frequencies into corresponding linear CQI values, a linear estimated-CQI value for the middle frequency is determined by subtracting an offset from an average of said corresponding linear CQI values. The offset is determined according to a frequency separation between the two neighboring frequencies. Preferably, the offset is linearly proportional to the frequency separation. Interpolation, preferably linear interpolation, is used to obtain linear CQI values of other frequencies.
