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Channel state information (csi) feedback protocol for multiuser multiple input, multiple output (mu-mimo)

A channel state information and channel technology, applied in transmission path sub-channel allocation, channel estimation, transmission modification based on link quality, etc.

Inactive Publication Date: 2013-03-13
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Channel state information (csi) feedback protocol for multiuser multiple input, multiple output (mu-mimo)

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Embodiment Construction

[0056] Various aspects of the present disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided to make the disclosure of the application more thorough and complete, and to fully convey the protection scope of the disclosure of the application to those skilled in the art. Based on the teachings of the application, those skilled in the art should understand that the protection scope of the disclosure content of the application is intended to cover any aspect disclosed in the application, no matter whether the aspect is implemented alone or in combination with any other aspects of the present invention. of. For example, an apparatus may be implemented or a method performed using any number of the aspects presented herein. Addition...

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Abstract

Certain aspects of the present disclosure provide techniques and apparatus for using channel state information (CSI) feedback for multiuser multiple-input multiple-output (MU-MIMO) transmission. For certain aspects, a method of wireless communications generally includes generating a training frame and transmitting the generated training frame. The training frame typically includes first information identifying a group of one or more apparatuses and second information indicating whether each of the apparatuses in the group is to determine at least one characteristic of a channel. For other aspects, a method of wireless communications generally includes receiving a request at an apparatus and transmitting, in response to the received request, a packet using frame aggregation, wherein two or more frames are transmitted in a single transmission using a single header.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority to US Provisional Patent Application No. 61 / 361,952 (Attorney Docket No. 101900P1 ), filed July 7, 2010, which is incorporated herein by reference. technical field [0003] In general, certain aspects of the present disclosure relate to wireless communications, and in particular, certain aspects of the present disclosure relate to channel state information (CSI) for multi-user multiple-input multiple-output (MU-MIMO) transmissions Feedback protocol. Background technique [0004] To address the ever-increasing bandwidth demand required by wireless communication systems, different schemes are being developed to enable multiple user terminals to communicate with a single access point by sharing channel resources while achieving high data throughput. Multiple-Input Multiple-Output (MIMO) technology represents one such scheme that has recently emerged as a popular technique f...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04B7/06H04L1/00H04L25/03H04L5/00
CPCH04L5/0053H04L25/0204H04L2025/03802H04L25/0226H04L2025/03426H04L25/0228H04L5/0048H04L1/1671H04L5/0023H04L25/0222H04L25/03343H04L1/0026H04B7/06H04L1/00
Inventor S·P·亚伯拉罕S·梅林H·桑帕斯M·M·文廷克V·K·琼斯四世
Owner QUALCOMM INC
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