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Data sending and receiving method and device and network system

A technology of a data transmission method and a data reception method, which is applied in the directions of network data management, access restriction, connection management, etc., can solve the problem that power consumption cannot be ignored, and achieve the effect of overcoming difficult realization and overcoming conflicts.

Inactive Publication Date: 2014-10-08
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the receiving STA listens to all its channels at any time, and its power loss cannot be ignored

Method used

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  • Data sending and receiving method and device and network system
  • Data sending and receiving method and device and network system
  • Data sending and receiving method and device and network system

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Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0045] Aiming at the defects that the transmission of MU-MIMO data cannot be effectively protected in the prior art, a solution is provided, that is, before sending the RTS, the data sending end (the embodiment of the present invention uses AP as an example for illustration, and the AP is a special The data sending STA) sends a MAC frame to the oppo...

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Abstract

Embodiments of the present invention provide a method and a device for sending and receiving data, and a network system. The method for sending data comprises: broadcasting an RTSA, the RTSA carrying a user address list; sending an RTS, and receiving a CTS returned by a peer end in response to the RTS; and sending data to the peer end. The user address list is used to indicate whether a user receiving the RTSA sets an NAV after receiving the RTS or the CTS. In each embodiment of the present invention, an RTSA is added as supplement and extension for an RTS / CTS mechanism, and an STA receiving the RTSA selects, after receiving an RTS / CTS, whether to set an NAV according to an indication of a user address list in the RTSA, so as to reply in time to data sent by a data sending end, thereby overcoming the problems that the existing technologies conflict with each other and are difficult to implement, and providing an effective protection mechanism for data transmission.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of wireless communication, and in particular, to a method and device for sending and receiving data, and a network system. Background technique [0002] The multiple user multiple input multiple output (Multiple Input Multiple Output, MU-MIMO) technology is a key technology in the next generation wireless communication system. Space resources can be fully utilized through MU-MIMO. Compared with traditional single-user MIMO (SU-MIMO), multiple users can be supported in the space dimension, and the dimension of space is added to support multi-user communication. MU-MIMO requires that the number of antennas at the transmitting end is greater than or equal to the sum of multiple antennas at the receiving end, and multi-user communication in the spatial dimension is realized by using the precoding method of channel information. In other words, this is Space Division Multiple Access (SDMA...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/10H04W74/08
CPCH04W76/023H04W74/0816H04W8/26H04W76/14
Inventor 杨讯李云波伍天宇
Owner HUAWEI TECH CO LTD
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