Patent ID: 9374142
Filing Date: 2016-06-21
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for operating a first wireless node as part of a closed loop multiple-input multiple-output (MIMO) communication system including the first wireless node and a second wireless node, the method comprising: determining feedback data, wherein determining feedback data includes selecting an entry in a predefined codebook, wherein rows of the codebook correspond respectively to two or more values of PMI, wherein columns of the codebook correspond respectively to two or more rank values; transmitting feedback data over a wireless channel from the first wireless node to the second wireless node, wherein the feedback data includes at least a first of the PMI values, wherein the first PMI value corresponds to the row of the selected codebook entry, wherein said transmitting is performed by a wireless interface, wherein the feedback data also includes information identifying preferred subbands in the wireless channel, wherein the first PMI value is a single value for the preferred subbands.