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Downlink data transmitting and receiving method, and access point AP and station STA thereof

A technology of downlink data and sending method, which is applied in the field of downlink data sending and receiving method and its access point AP and station STA, which can solve the problem of multiple AP data out of sync

Active Publication Date: 2014-10-22
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a downlink data sending and receiving method and its access point AP and station STA, which are used to solve the problem in the prior art that the data of multiple APs received by the STA located in the overlapping area are not synchronized

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  • Downlink data transmitting and receiving method, and access point AP and station STA thereof
  • Downlink data transmitting and receiving method, and access point AP and station STA thereof
  • Downlink data transmitting and receiving method, and access point AP and station STA thereof

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Embodiment Construction

[0109] 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 making creative efforts belong to the protection scope of the present invention.

[0110] figure 1 It is a flow chart of Embodiment 1 of the downlink data sending method of the present invention. The method provided in this embodiment can be executed by the downlink data sending device, which is integrated in the AP. Those skilled in the art can understand that the AP can be a network-side device that can provide wireless ...

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PUM

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Abstract

Disclosed are a downlink data sending and receiving method, an access point (AP), and a station (STA). The downlink data sending method comprises: the AP receiving a first sending allowance message sent by the STA, the first sending allowance message comprising identifiers of all basic service sets (BSS) covering the STA (101); the AP determining, according to the first sending allowance message, a starting time for the AP to send downlink data, so that the starting time determined by the AP is the same as a starting time determined by an AP of another BSS in the first sending allowance message (102); and the AP starting sending downlink data at the starting time determined by the AP (103). When the AP has downlink data to be sent, each AP determines, according to the received first sending allowance message, a starting time for sending data, so that by enabling that the starting time determined by each AP is the same, it is ensured that each AP can send data synchronously, thereby avoiding mutual interference caused by that each AP sends data asynchronously in an overlapping area.

Description

technical field [0001] The present invention relates to communication technology, in particular to a downlink data sending and receiving method and its access point AP and station STA. Background technique [0002] In the 802.11 specification, an access point (AP for short) and multiple stations (Station for short) associated with the AP form a Basic Service Set (BSS for short). Usually, STAs within the wireless signal coverage of the AP are associated with the AP. Wireless Local Area Networks (WLAN for short) defined by 802.11 utilizes the Carrier Sense Multiple Access with Collision Avoidance (CSMA\CA) mechanism with collision avoidance to enable multiple stations to share the wireless channel, but this This random access method cannot guarantee the synchronization among the transmitting nodes. [0003] In practical applications, it is common for multiple BSSs to overlap in coverage areas, thus forming an overlapping BSS (Overlapping BSS, OBSS for short). When multiple ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
CPCH04W56/0015H04W56/0045
Inventor 杨绿溪王敏杨讯
Owner HONOR DEVICE CO LTD