QoS management mechanism for distinguishing user priorities in WLAN based on SDN and AP (Access Point) virtualization technique

Abstract

The invention discloses a QoS management mechanism for distinguishing user priorities in WLAN. In adoption of the SDN and an AP virtualization technique, the data of user terminals of different priorities are bound on the queues of different priorities at each port of an OpenFlow switch. The mechanism is realized through the following steps that a sender sends data to a physical access point; the physical access point converts 802.11 data frames into Ethernet frames; the Ethernet frames are sent to the OpenFlow switch; the OpenFlow switch forwards the data from the appointed queue of the appointed port according to matching flow table items; if there is no matching flow table item, the data are sent to a center controller; and the center controller decides how to process the data. According to the mechanism disclosed by the invention, the data of user terminals of different priorities are bound on the queues of different priorities by the OpenFlow switch for forwarding; the QoS management capable of distinguishing user priorities can be realized; and therefore, the user terminals of different priorities can obtain different QoS experiences.

Description

technical field [0001] The invention relates to the intersection field of computer network and wireless communication, relates to network virtualization and wireless access network technology, and belongs to the technical field of mobile communication. Background technique [0002] A wireless local area network (WLAN) refers to a computer network that uses wireless channels as a transmission medium. By using WLAN, users can realize broadband network access anytime and anywhere. With the development and wider application of WLAN, more and more people start to use WLAN to access the network through a wireless access point (Access Point, AP). [0003] The 802.11 standard is widely used in WLANs. The 802.11 standard is formulated by the Institute of Electrical and Electronics Engineers (IEEE), and standardizes the physical layer (PHY) and media access control layer (MAC) of WLAN. However, the traditional 802.11 technology does not have built-in support for QoS, which makes IEE...

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Problems solved by technology

[0006] In order to overcome the deficiencies in the prior art, the present invention proposes a QoS management mechanism based on SDN and AP virtualization technology for distinguishing user priorities in WLAN, in order to realize the QoS service function for distinguishing user priorities and solve the existing problems. The WLAN network cannot provide QoS guarantees, so as to meet the QoS requirements of users with different priorities

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