| Summary: | 碩士 === 國立臺北大學 === 資訊工程學系 === 104 === With the speed of a wired network continued to rise in recent years, the use of Software-Defined Network (SDN) trend as a mobile communication core network services became the main research directions. In order to allow SDN communication path management functions and actions have a better combination, effectively reducing the UE and the base station handover time consumed is an important issue. To improve the handover performance, Media Independent Handover (MIH) is proposed in the IEEE 802.21 . According to the base station and the UE information and status, MIH can predict the next candidate base station is connected, and reduce user between base station handover time. To enhance the efficiency of mobility management on handover operation and manage paths effectively, SDN controller can interact with MIH event server and information server, exchange information and modify the route of the path switch forwarding rules. Typical MIH is host-assisted, because of completation of the handover process need to trigger event by the UE , and support MIH protocol particularly. This paper presents a new framework to enable MIH handover process is triggered by the base station, combined SDN as the core network, to reduce handover time-consuming, as well as to enhance the stability and speed of data transmission.
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