VoIP with IPv6 packet transmission over WLAN

In the recent years, Voice over Internet Protocol (VoIP) is the most popular technology and becomes a kind of killer application, and 802.11-based wireless Local Area network (WLAN) has been set up in many public places. People who use VoIP over WLAN can be more convenient. In the common WLANs, IEEE 802.11e WLAN can support VoIP with better Quality of Service (QoS), However, 802.11 lacks a flexible mechanism to adapt to the varying wireless channel condition. The idea of this research project is to promote the use of VoIP that uses IPv6 and to exploit the IP protocols over WLAN (Wireless Local Area Network). Specifically, we show a cross-layer framework for design of wireless networks to support delay-critical applications, such as conversational voice or realtime video. The framework incorporates adaptation across all layers of the protocol stack to leverage the flexibility offered by joint optimization of design parameters. There are several network features that can be exploited to minimize delay, reduce delay, and maximize performance. With the assistant of the active scheme, it can be avoid the longest phase that IEEE 802.11 will enter. And implement a policy-based 802.11e WLAN to protect the right of user who has applied real-time services.