Channel access method of ultra-high-speed wireless local area network based on delay controllable

A channel access method and wireless local area network technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problems of not considering the priority of different services, not considering the quality of service, etc., to ensure real-time, The effect of ensuring proportional fairness

Active Publication Date: 2017-05-24
上海众网数聚信息科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the current technology is mainly aimed at improving the throughput without considering the quality of service
For example, the 40MHz transmission in 802.11n is given priority to ensure the 40MHz channel for transmission when the network channel resources are sufficient, without considering the priority of different services for transmission

Method used

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  • Channel access method of ultra-high-speed wireless local area network based on delay controllable
  • Channel access method of ultra-high-speed wireless local area network based on delay controllable
  • Channel access method of ultra-high-speed wireless local area network based on delay controllable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a delay-controllable ultra-high-speed wireless local area network channel access method, and its main application scenario is: WLAN (Wireless Local Area Network, wireless local area network) with AP (Access Point, access point) infrastructure In the network architecture, such as figure 2 As shown, BSS (Basic Service Set, Basic Service Set) represents a basic service area. The BSS is composed of a wireless access point AP and several wireless workstations STA associated with the AP. The communication between the STAs is controlled and coordinated by the AP; the AP Or all STAs have the ability to support channel bonding and simultaneously perform multi-channel transmission. In a WLAN with AP infrastructure, the AP acts as a channel coordinator to control and execute channel access.

[0035] In the case of multiple channel binding transmissions in the ultra-high-speed wireless LAN scenario, the concept of queue blocking rate is proposed for diffe...

Embodiment 2

[0062] This embodiment provides a delay-controllable ultra-high-speed wireless local area network channel access method. The application scenarios of this method are as follows: image 3 As shown, where BSS represents a basic service set, BSS consists of a wireless access point AP and several wireless workstations STA (also known as wireless nodes) associated with it, and the communication between STAs is controlled and coordinated by the AP. The basic functions of the AP access point device are: responsible for wireless communication management, such as assigning the right to use wireless channels to wireless nodes; realizing the conversion between wireless communication and wired communication; playing a role similar to wired LAN bridges and routers.

[0063] According to the 802.11e protocol, there are 4 types of service levels, which are 2 types of background services, 1 type of video services and 1 type of voice services, and the corresponding QoS levels increase from 0 to...

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Abstract

The present invention provides a delay-controllable ultra-high-speed wireless local area network channel access method, including: step 1, the AP periodically polls the STA in the BSS; step 2, the STA reports the local current service queue information to the AP, and the The AP calculates the queue blocking rate of different priority services; step 3, the AP sets the queue blocking rate thresholds for different priority service queues, and adjusts the channel access and allocation of each priority service according to the queue blocking rate; when the high priority When the queue blocking rate of high-priority services exceeds the corresponding preset blocking rate threshold, the AP dynamically adjusts the queue blocking rate threshold to allow low-priority services to give up part of the channel resources to high-priority services, ensuring high-priority services Priority transmission; step 4, the AP notifies the STA of the reconfigured channel resource, and the STA performs data transmission according to the reconfigured channel resource. The invention firstly guarantees the real-time performance of high-priority services, and at the same time ensures the proportional fairness of transmission of different priority services.

Description

technical field [0001] The invention belongs to the technical field of wireless local area network communication, and relates to a channel access method, in particular to an ultra-high-speed wireless local area network channel access method based on controllable time delay. Background technique [0002] Wireless Local Area Network (WLAN) is the product of the combination of computer network and wireless communication technology. As a typical form of wireless IP access, wireless local area network has the advantages of mobile computing, flexible and fast architecture networking, low maintenance costs, and good scalability. will play an important role in the system. At present, IEEE802.11 has become the mainstream standard of wireless local area network. In 2009, the IEEE802.11-2007 standard was supplemented and named IEEE802.11n-2009, which stipulates the use of multi-antenna technology, channel bonding and frame aggregation technologies. Under the channel bandwidth of 40MH...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04L12/801H04L12/833H04L47/31
Inventor单联海徐丽娟袁芝胡宏林
Owner上海众网数聚信息科技股份有限公司