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Channel access method and apparatus of wireless network

A channel access method and wireless network technology, applied in the field of wireless network channel access methods and devices, capable of solving problems such as poor wireless network performance

Active Publication Date: 2016-12-21
THE HONG KONG POLYTECHNIC UNIV SHENZHEN RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of this, embodiments of the present invention provide a channel access method and device for a wireless network to solve the problem of poor network performance of the wireless network

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  • Channel access method and apparatus of wireless network
  • Channel access method and apparatus of wireless network
  • Channel access method and apparatus of wireless network

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Embodiment Construction

[0029] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0030] figure 2 It shows the implementation process of the channel access method of the wireless network cable provided by the embodiment of the present invention, and the details are as follows:

[0031] S201. Add a field for carrying link information to the control frame sent by the sending node.

[0032] S202. The receiving node receives the control frame, and restores the link information fr...

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Abstract

The invention is applied to the technical field of communication, and provides a channel access method and apparatus of a wireless network. The method comprises the following steps: adding a field used for carrying link information into a control frame sent by a sending node; a receiving node receiving the control frame, and based on a preset physical layer beacon detection mechanism, restoring the link information from the control frame; and the receiving node, according to the link information, determining the receiving node cause interference to current link data transmission, and if a determination result is that the receiving node nodes not cause the interference to the current link data transmission, the receiving node triggering concurrent transmission. According to the invention, cross-layer protocol design of a physical layer and a MAC layer is carried out for the purpose of solving the problem of affecting network performance existing in a CSMA / CA mechanism defined by an IEEE802.11 standard, and the network overall transmission performance is finally improved from the perspectives of avoiding conflicts and improving concurrent transmission opportunities.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a channel access method and device of a wireless network. Background technique [0002] At present, the emergence of a large number of data-driven applications leads to the rapid growth of wireless traffic, which has a huge impact on the system bandwidth of wireless networks. Therefore, it is necessary to improve the performance of wireless networks to meet the ever-growing user needs. In a wireless local area network, since multiple nodes share the same channel resource, a node needs to judge channel availability before sending data to avoid conflicts with other nodes' ongoing data transmission. [0003] At present, in the IEEE 802.11 standard mainly used in wireless local area networks, a carrier sense with collision avoidance (Carrier Sense Multiple Access with Collision Avoidance, CSMA / CA) mechanism is defined, which is used to realize channel access in dist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08
CPCH04W74/0816
Inventor 楼炜姚俊梅熊涛
Owner THE HONG KONG POLYTECHNIC UNIV SHENZHEN RES INST