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Wireless communication method and apparatus for encoding and decoding beamforming vectors

A technique for beamforming, precoding information, applied in receiver-specific devices, link quality-based transmission modification, radio transmission systems, etc., and can solve huge and other problems

Inactive Publication Date: 2013-11-06
INTERDIGITAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the overhead of using explicit signaling or PDCCH to carry beamforming information including desired and interference information is huge compared to using explicit signaling or DRS

Method used

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  • Wireless communication method and apparatus for encoding and decoding beamforming vectors
  • Wireless communication method and apparatus for encoding and decoding beamforming vectors
  • Wireless communication method and apparatus for encoding and decoding beamforming vectors

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Embodiment

[0063] CLAIMS 1. A method of signaling beamforming or precoding information, the method comprising:

[0064] transmitting a reference signal comprising a plurality of indices associated with beamforming or precoding information, wherein one of the indices is associated with a particular wireless transmit / receive unit (WTRU) and the remaining indices are associated with WTRUs interfering with the particular WTRU associated; and

[0065] A plurality of control channels are transmitted, each control channel being associated with a respective one of the indices included in the reference signal.

[0066] 2. The method according to embodiment 1, the method comprising:

[0067] multiplexing the reference signal and the control channel to generate a multiplexed signal; and

[0068] The multiplexed signal is transmitted.

[0069] 3. The method of embodiment 2, wherein the particular WTRU is configured to receive the multiplexed signal and subtract an index associated with the partic...

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Abstract

A wireless communication method and apparatus for encoding and decoding beamforming vectors are disclosed. A base station sends explicit signaling for a beamforming vector of a wireless transmit / receive unit (WTRU) and implicit signaling for beamforming vectors of interfering WTRUs. Each WTRU uses its own beam forming vector to estimate the beamforming vectors of each of the other WTRUs.

Description

technical field [0001] This application relates to wireless communication systems. Background technique [0002] Many wireless communication systems include a base station in a two-way wireless communication system having multiple wireless transmit / receive units (WTRUs). The base station can send a signal containing beamforming vectors to each WTRU. The signal instructs the WTRU as to how to receive a radio beam formed by a base station with a particular beam shape for communication between the WTRU and the base station. The purpose of this beamforming is to optimize the overall system performance. One example of such optimization is to support a multi-user multiple-input multiple-output (MU-MIMO) communication system and minimize interference when two or more WTRUs transmit simultaneously using the same frequency / time source. [0003] Co-pending U.S. Patent Application 10 / 052,842, incorporated herein by reference, discloses that beamforming or precoding information needs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06
CPCH04B7/0665H04B7/0452H04B7/0617H04L1/0038
Inventor K·J-L·潘R·L·奥勒森
Owner INTERDIGITAL TECH CORP