METHOD AND ARRANGEMENT IN A WIRELESS COMMUNICATION SYSTEM
摘要
<p>The invention relates to methods and arrangements for rank adaptation for transmissions over a multipie-input-muttipie-output, M1MO, channel in a wireless communications system. A receiving node (270) performs (310) measurements on reference signals received from a sending node (200), The receiving node performs (330a( 330b) a first feedback computation for a first rank and at least one second feedback computation for at yeast one second rank based on the measurements. The first feedback computation includes applying a first relation between assumed transmitted energy for data and transmitted energy for the reference signals that is specific to the first rank. A second relation between assumed transmitted energy for data and transmitted energy for the reference signals is specific to the at least one second rank. The receiving node selects (340) one rank based on the feedback computations and indicates (350) the selected rank in a feedback report to the sending node.</p>
申请公布号
WO2012044236(A1)
申请公布日期
2012.04.05
申请号
WO2011SE51144
申请日期
2011.09.26
申请人
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL);HAMMARWALL, DAVID;BERGMAN, SVANTE;JOENGREN, GEORGE
发明人
HAMMARWALL, DAVID;BERGMAN, SVANTE;JOENGREN, GEORGE