Performance evaluation of sip based cross layer design for handoff in wifiwimax networks

Abstract

Next Generation Mobile Networks NGMN is envisioned as a newlineconvergence of different wireless technologies into an ALL Internet newlineProtocol IP based heterogeneous wireless networks providing multimedia newlinerealtime applications to mobile users One of the most challenging research newlineissues in a converged ALLIP network is to maintain the continuity of service newlineduring Vertical Handoff VHO A VHO occurs when a Mobile Node MN newlinechanges access network during an active communication session In case of newlinedelaysensitive applications like Voice over IP VoIP or video streaming the newlinecontinuity of service is absolutely necessary Because any excessive handoff newlinedelay will affect its Quality of Service QoS newline newline