Method and apparatus for efficient precoding information validation for MIMO communications

Patent metadata

Field	Value
Publication number	US-9716604-B2
Application number	US-10658108-A
Country	US
Kind code	B2
Filing date	Apr 21, 2008
Priority date	Apr 20, 2007
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

A method and apparatus for efficient precoding matrix verification in a multiple-input multiple-output MIMO wireless communication system are disclosed. A wireless transmit/receive unit WTRU sends a precoding matrix index PMI to an eNodeB. The eNodeB sends a verification message including a PMI indicator indicating whether or not the PMI of the WTRU and a PMI of the eNodeB are identical. If the PMI of the WTRU and of the eNodeB are identical, the eNodeB sends just a PMI indicator otherwise the eNodeB sends to the WTRU a PMI indicator and the PMI of the eNodeB. A plurality of PMIs may be sent simultaneously, and the PMIs may be partitioned into a plurality of groups. The PMI indicator may be either attached to or inserted into control signaling. PMI validation messages can be signaled to WTRU by control signaling or use of a dedicated reference signal.

First claim

What is claimed is:

1. A method of decoding data received by a Wireless Transmit/Receive Unit (WTRU), the method comprising:
sending, by the WTRU to an evolved Node B (eNB), (1) a rank indicator indicating a rank of greater than one, the rank of greater than one being suggested by the WTRU for communication with the WTRU and (2) a codebook value representing a multi-column precoding matrix, as feedback;
receiving, by the WTRU, control signaling including a multi-bit indicator;…

Assignees

• Pan Kyle Jung-Lin
• Interdigital Tech Corp

Inventors

• Pan Kyle Jung-Lin

Classifications

• H04L1/1671

  Electricity · mapped topic

• H04L2025/03414

  Electricity · mapped topic

• H04B7/0652

  Electricity · mapped topic

• H04L1/0025 Primary

  Electricity · mapped topic

• H04L2025/03802

  Electricity · mapped topic