Methods and devices for sending and receiving data, and network system

A technology of data sending method and data receiving method, which is applied in the direction of network data management, access restriction, connection management, etc., can solve problems such as power loss that cannot be ignored, and achieve the effect of overcoming difficult implementation and overcoming conflicts

Inactive Publication Date: 2012-07-04
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Methods and devices for sending and receiving data, and network system
  • Methods and devices for sending and receiving data, and network system
  • Methods and devices for sending and receiving data, 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

The embodiment of the invention provides methods and devices for sending and receiving data, and a network system. The method for sending the data comprises the following steps of: broadcasting a request to send announcement (RTSA) which carries a user address list; sending a request to send (RTS), and receiving a clear to send (CTS) returned by an opposite end in response to the RTS; and sending data to the opposite end, wherein the user address list is used for indicating whether a user receiving the RTSA is provided with a network allocation vector (NAV) after receiving the RTS or the CTS. According to the embodiments of the invention, the RTSA is added so as to be used as supplementation and expansion of an RTS / CTS mechanism; an STA user receiving the RTSA selects whether to be provided with the NAV according to the indication of the user address list in the RTSA after receiving the RTS / CTS, and can timely reply the data sent by a data sending end; and therefore, the problems of mutual confliction, difficult realization and the like in the prior art are solved, and an effective protection mechanism is supplied to 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 Applications(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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