Research On The Security Issue Of Wireless Mesh Network In Ubiquitous Networks

With the rapid development of modern wireless communication technology,Wireless communications evolved many different forms networks coexist.Including Wireless Mesh Network WMN,wireless local area network WLAN,WiMAX,Wi-Fi,wireless personal area network WPAN,wireless sensor network WSN,Ad Hoc,3G,4G and other communication mechanisms with different heterogeneous networks and networking technology.These networks make people's work and life more and more convenient,thus wireless communication network has gradually towards broadband,high-speed and more diversity development,various access technologies emerge.In this context this paper studied and realized a system that including these networks together,communicated with each other,can be switched safely,so as to achieve heterogeneous wireless network work together to provide wide coverage,high bandwidth,high mobility,unified security authentication secure access services.And the underlying communication mechanism safety issues were studied exploratory presents a new mechanism for acoustic covert communication.This paper mainly for Wireless Mesh Network Research ubiquitous security issues in the integration of heterogeneous networks.The main work includes:1.A range of security issues with the current development of wireless Mesh networks and their integration into the ubiquitous when a heterogeneous network,analyzed and proposed countermeasures to be taken at the system level--Designed and implemented for the ubiquitous unified security in heterogeneous network authentication system;Countermeasures at the level of underlying communication mechanism should be taken--Explore a new communication mechanism which is based on the frequency of the acoustic covert communication.Unified security authentication system using the user registration and log-in,in front of the system to complete the safety certification process,which includes these several security elements first,the transmission of information between the user and the server go through data encryption;secondly,the user server and server users,there are two one-way authentication,thus forming a two-way authentication;Finally,there is a one-time password challenge / response authentication for users.The underlying communication is explored covert communication mechanism based on acoustic field,this method of transmitting and receiving requirements of the equipment low as long as the equipment has a sound card can be completed,and the band slightly above the human hearing frequency range,reaching the effect of covert communications,security systems have certain increase.2.Towards ubiquitous coexist in a heterogeneous network environment,this paper design and implement of the ubiquitous in a heterogeneous network platform unified security authentication system for secure authentication mechanisms mentioned in the paper,detailed description of the division of labor and overall architecture of the system functional modules,with an emphasis on security access authentication module depth introduction,at the same time elaborated in detail on the security explore underlying communication mechanism.3.Use experimental equipment to build a ubiquitous in a heterogeneous network simulation environment,including wireless Mesh networks,3G networks and WLAN networks of the three interconnected,Tested the performance of the system,we obtain the system to meet the user QoS and system security improvement conclusion.While in terms of underlying communication mechanism it was tested character transmission,indicating that the kinds of method have some credible scientific ability.In this paper,face the heterogeneous wireless network integration of ubiquitous heterogeneous wireless network environment,the research work for the security needs of wireless Mesh user secure access to heterogeneous network has an important significance.