Research And Implementation Of DSM Of Wi-Fi Under Wireless Network Scenarios

As the development of the wireless mobile communication technology, Wi-Fi mobile phone becomes a new highlight in current markets. Wi-Fi mobile phone is based on the Wireless LAN and Internet, under the unauthorized mobile access network environment, supports IP telephony by VoIP. The advantage of the Wi-Fi mobile phone lies in two aspects:Firstly, with the function of capable to establish ordinary links with the covering region of internet through AP, Wi-Fi mobile phone can achieve the goal of surfing the internet, this linking is charge free, and in terms of speed it is faster and more stable than GPRS links.Secondly, based on WLAN and Internet , Wi-Fi mobile phone can establish a security protect functional linking, under the unauthorized mobile access network environment, namely, it can guarantee the security of entire UMA telecom network by IPSec.The main works of the dissertation includes:1. Analysis and research Wi-Fi technology, and its status and development prospects.2. Analysis and research related agreements including IPSec authentication first agreement (AH) and Encapsulating Security Payload Protocol (ESP), and Key Exchange Protocol (IKEv2), got mastered the IPSec architecture and working mechanisms.3. After In-depth study of the Wi-Fi link processing logic for the general Wi-Fi link and the link with security features, designed and implemented the linking management module to deal with Wi-Fi links.This dissertation manages and controls the two Wi-Fi link in Wi-Fi phones through the realization of a Wi-Fi link-based data management and processing logic modules in the Linux kernel phone system .The research results have been applied in the Wi-Fi phone products and have achieved good results.