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Method and apparatus for supporting adaptive channel state information feedback rate in a multi-user communication system

A channel state information, rate technology, applied in diversity/multi-antenna systems, error prevention/detection using return channel, channel estimation, etc., can solve problems such as high overhead

Inactive Publication Date: 2016-06-08
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Instead, due to the potentially high overhead of CSI feedback for multiple SDMA users in the IEEE802.11ac standard, and due to the possible abuse of this CSI feedback mechanism by malicious STAs, it may be desirable to specify the CSI feedback protocol in the standard specification

Method used

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Embodiment Construction

[0049] Various aspects of the 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 so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art should appreciate that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently or in combination with any other aspect of the disclosure. For example, an apparatus or method may be implemented using any number of aspects presented herein. Furthermore, the scope of the present disclosure is intended to encompass such apparatus or methods implemented using other structure, funct...

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Abstract

Certain aspects of the present disclosure relate to techniques for achieving adaptive channel state information (CSI) feedback rate in multi-user communication systems. A rate by which CSI feedback can be transmitted from each user station of a wireless system to a serving access point may be adjusted based on evolution of a channel between that user station and the access point.

Description

[0001] Claiming Priority Based on 35 U.S.C. §119 [0002] This patent application claims the benefit of U.S. Provisional Patent Application Serial No. 61 / 305,394, filed February 17, 2010, entitled "MACprotocoltosupportadaptivechannelstateinformationfeedbackrateinmulti-usercommunicationsystems," which provisional application has been assigned to the assignee of the present application, and is hereby assigned to It is expressly incorporated herein by reference. technical field [0003] Certain aspects of the present disclosure relate generally to wireless communications, and more particularly, to methods and apparatus for supporting adaptive channel state feedback rates in multi-user communication systems. Background technique [0004] To address the ever-increasing bandwidth requirements required by wireless communication systems, different schemes are being developed to allow multiple user terminals to communicate with a single access point (AP) by sharing channel resources ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04B7/06H04L1/16H04L1/00H04L25/02H04L5/00
CPCH04L25/03343H04B7/0626H04B7/0658H04L1/0026H04L1/0029H04L1/003H04L5/0048H04L25/0204H04L25/0222H04L25/0228H04L2025/03426H04L2025/03777
Inventor G·A·布赖特S·P·亚伯拉罕S·韦尔玛尼H·桑帕斯V·K·琼斯
Owner QUALCOMM INC
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