Research And Design Of WLAN Access Control Technology Based On SDN

Mobile Internet has developed rapidly,and wireless network has become the main way of communication and daily information acquisition.Wireless access network not only provide network services,but also need to meet a variety of different scene of access needs.The increasing of wireless network users and the emergence of a variety of network management definition modules are indicative of a new generation of wireless networks will go to a deeper degree of customization.The centralized control and programmable features of the Software Defined Network(SDN)are born to the needs of modern networks.Similarly,such features as easy to deploy,flexible and manageable has become an important consideration of whether a new generation of wireless access network architecture is successful or not.Based on these needs,firstly,the current situation of SDN technology and WLAN are summarized,the problems of SDN technology application in wireless network and the advantages and disadvantages of existing solutions are explained.Then,the design idea of Biacn access control architecture based on SDN is proposed.By deploying controller agent software and access point agent software in different locations of wireless network,flexible control of access point and wireless users can be realized.And the use of control agent software API can be completed by the flexible deployment of wireless networks and deep customization,to achieve different access needs.Through the cooperation of bilateral agents,you can change the size of the configuration and access control conditions,improve the efficiency of wireless network deployment.This research introduces the design of ACAMP in the function and architecture of each module of Biacn architecture,and explains the innovation and advantages of Biacn access control architecture.In addition,this research gives the concrete method of Biacn architecture implementation,and introduces the code design details and implementation flow of control agent software and access point agent software in detail.And the WLAN control function implemented in the architecture is tested one by one,and the test result analysis is given to illustrate the influence of the bilateral proxy mechanism in the Biacn architecture on the overall wireless network access control.At the end of this thesis,based on Biacn,a user-oriented access control mechanism is proposed,which utilizes the dynamic monitoring of WLAN to ensure the quality of network services.The Biacn architecture provides software-level encapsulation calls for wireless network development managers for their scalability and programmability,improving controllability and flexibility in WLAN deploying and management,and reducing the difficulty and cost of maintaining maintenance.The Biacn architecture will allow static configuration of wireless networks into deep definition of the free expand of the software defined wireless network(SDWN),to achieve network deployment automation and the free control of user access.