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Method and device for realizing WLAN real-time and QoS

A wireless local area network, real-time technology, applied to wireless communication, network traffic/resource management, data exchange through path configuration, etc. , to achieve good compatibility and adaptability, prevent the channel from overloading, and achieve the effect of low delay characteristics

Active Publication Date: 2014-05-07
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Application Information

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Problems solved by technology

The main purpose of this layer is to solve the problems of IEEE802.11 real-time business without priority distinction, insufficient real-time guarantee, and low channel efficiency under heavy load, that is, to provide an effective QoS mechanism

Method used

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  • Method and device for realizing WLAN real-time and QoS
  • Method and device for realizing WLAN real-time and QoS
  • Method and device for realizing WLAN real-time and QoS

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specific Embodiment approach

[0048] The present invention will be further described in detail below in conjunction with the embodiments shown in the accompanying drawings.

[0049] A), QoS packet format

[0050] In this embodiment, if the packet header field is 00, it indicates that the QoS packet is a control packet. The control packet is used for management control, etc., such as admission control, etc., and is generated and terminated by the QoS layer.

[0051] When the packet header field is 11, it indicates that the QoS packet is a valid data packet. The valid data packet carries the valid data from the upper layer, and sends it to the MAC layer after being packaged; at the same time, it receives the data of the MAC layer, unpacks it and sends it to the upper layer.

[0052] B), for the embodiment of the IEEE802.11 product supported by PCF

[0053] periodic real-time business

[0054] For the periodic real-time service definition gives the priority distinction, P i (i=0, 1, . . . n). Periodic r...

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Abstract

A method for realizing real-time performance and QoS of a wireless local area network is characterized by adding a QoS intermediate layer on top of the MAC layer of IEEE802.11, which layer is implemented by software; the QoS intermediate layer provides real-time performance and QoS for services. The QoS middle layer is a software implementation on top of the MAC layer of IEEE802.11. It does not change the IEEE802.11 protocol and is suitable for the existing IEEE802.11 protocol and for future improvements of IEEE802.11. Applicable to existing IEEE802.11 products, showing good compatibility and adaptability. The original IEEE802.11 protocol system has a very weak priority differentiation function. It only defines two types of services: real-time (non-competitive) and competitive services, and does not further prioritize real-time services. As more and more applications require further priority identification of services, the present invention provides priority differentiation services for real-time services to provide better differentiation services.

Description

technical field [0001] The invention relates to a wireless local area network, in particular to the real-time performance and QoS guarantee of the wireless local area network. Background technique [0002] With the development of microelectronics and wireless communication technology, people pay more and more attention to wireless local area network (WLAN), especially in 1997 the international standard of wireless local area network IEEE802.11 (IEEE Std 802.11-1997 Information Technology-telecommunications And Information exchange Between Systems- Local And Metropolitan Area NetworkS-Specific Requirements-part 11: Wireless Lan Medium Access Control (MAC) AndPhysical Layer (PHY) Specifications.) was passed, which promoted the rapid development of wireless local area networks. Wireless local area network is not bound by cables, can be moved, can solve the problems caused by difficult wiring in wired networks, and has many advantages such as flexible networking, convenient expa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L12/28H04W28/24
Inventor 沈钢刘儿兀金珊桂洛宁
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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