Patent ID: 9425873
Filing Date: 2016-08-23
CPC Classification: H04B

Claim Text:
1. A method in a first node of conveying precoding information in a control message to a second node, the control message containing information that describes properties of an associated wireless data transmission between the first and second nodes employing spatial multiplexing and precoding information for sending codewords corresponding to transport blocks in said wireless data transmission, comprising the steps of: determining precoding parameters to be included in said control message to the second node; encoding control information bits in at least one precoding information field of the control message according to the determined precoding parameters based on values in payload size related fields in the control message, wherein said payload size related field values are used to indicate that a first codeword is enabled while a second codeword is disabled, or that two codewords are enabled, whereby an interpretation of said control information bits in the precoding information field(s) is determined based on whether one or two codewords are enabled; and sending said control message with said precoding information and payload size related fields to the second node.