Handover Optimization for Real-Time Application in Mobile WiMAX / IEEE 802.16e
نویسندگان
چکیده
-The demand for wireless broadband services is growing rapidly. Mobile WiMAX is one of the most promising technologies for broadband wireless communication. It allows users to roam over the network under vehicular speeds. However since IEEE 802.16e standard for Mobile WiMAX defines only hard handover mandatory, Mobile WiMAX cannot transmit or receive packets during handover. Thus real-time packets can be dropped and it may result that service providers cannot guarantee quality of service during handover procedure. The long interruption of hard handover is horrible for real-time applications like IPTV, VoIP and Sat TV. Our proposed solution solves this latency problem during handover. In our scheme minimum number of Base Stations will be scanned and MS should scan only those BSs which can fulfil the bandwidth requirement of MS. Priority should be given to real time flows in handover. Through the proposed scheme handover will be fast, secure and seamless; and transmission interruption will be so brief that user will not perceive
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