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Data feedback methods and related apparatuses

a data feedback and data technology, applied in the field of communication, can solve problems such as logical imprecision and affecting the design of related products

Inactive Publication Date: 2013-08-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a method and apparatus for adjusting the communication status between a beamformee and a beamformer based on the number of active antennas. This allows the beamformer to timely know its actual communication status and optimize it accordingly, regardless of the number of actual active antennas. The technical effect of this invention is better communication performance and improved efficiency between the beamformer and beamsee.

Problems solved by technology

This leads to logical imprecision and disorder of IEEE802.11ac, finally affecting the design of related products.

Method used

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  • Data feedback methods and related apparatuses
  • Data feedback methods and related apparatuses
  • Data feedback methods and related apparatuses

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Embodiment Construction

[0022]The embodiments of the present invention provide a data feedback method and related apparatuses. This enables a beamformer to adjust, according to related channel information about a beamformee, the communication status no matter whether the number of actual active antennas of the beamformee is larger than or equal to the number of columns set by the beamformer in an NDPA message. In general, on a network constructed of a basic service set (BSS, Basic Service Set), the corresponding physical device of the beamformer (Beamformer) is an access point (AP, Access point) and that of the beamformee (Beamformee) is a station (STA, Station); and on a network that is not constructed of a basic service set, the corresponding physical device of the Beamformer may be a certain STA and that of the Beamformee may be another STA.

[0023]Referring to FIG. 1, an embodiment of a data feedback method in the present invention includes:

[0024]101. A beamformee acquires the number of columns from a nu...

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Abstract

Embodiments of the present invention disclose data feedback methods and related apparatuses. This enables a beamformer to adjust the communication status according to related channel information about a beamformee no matter whether the number of actual active antennas of the beamformee is larger than or equal to the number of columns set by the beamformer in an NDPA message. The data feedback method according to the embodiments of the present invention includes: acquiring, by the beamformee, the number of columns from the NDPA message; detecting the number of active first spatial streams; comparing the number of first spatial streams with the number of columns, and taking the smaller value obtained from the comparison as the number of second spatial streams required for feedback; and feeding back the number of second spatial streams and spatial stream measurement information about the second spatial streams to the beamformer.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of International Application No. PCT / CN2012 / 081255,filed on Sep. 11, 2012, which claims priority to Chinese Patent Application No. 201110271898.2, filed on Sep. 14, 2011, both of which are hereby incorporated by reference in their entireties.FIELD OF THE INVENTION[0002]The present invention relates to the communications field, and in particular, to data feedback methods and related apparatuses.BACKGROUND OF THE INVENTION[0003]IEEE802.11ac is a branch of the IEEE802.11 protocol series and introduces a very-high-throughput probing mechanism, which is a channel detection mechanism between a beamformer and a beamformee. With this mechanism, the beamformer is capable of better knowing the situation of a channel between the beamformer and the beamformee. As such, the communication status can be improved by adjusting related parameters. In general, on a network constructed of a basic service set (BSS, Basic Ser...

Claims

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Application Information

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IPC IPC(8): H04B7/04
CPCH04B7/0617H04B7/063H04B7/0408H04B7/0417H04B7/0452
Inventor YAO, ZONGMINGLIU, MENGHONGXIA, LINFENG
Owner HUAWEI TECH CO LTD