位置感知及背景掃描下軟件定義車聯(lián)網(wǎng)無(wú)縫切換方案

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Abstract：To addressthe signaling redundancy in centralized schemes and the IP reconfiguration bottleneck in distributed schemes within traditional architectures of the internet of vehicles，a seamless handover scheme for software-defined internet of vehicles is proposed，which integrates location awareness，multi-interface background scanning，and dynamic flow table redirection techniques.First，the shortcomings of traditional centralized architectures are analyzed，along with the factors contributing to excesive handover delay.Then，relying on the dynamic scheduling capability of the global network view of the software-defined network （SDN） controler，the target base station selection eficiency is optimized through predictive scanning.Finall，considering the characteristics of vehicle multi-network interfaces，data transmision and background scanning tasks are decoupled，and multi-link load balancing is utilized to achieve uninterrupted service migration. Experimental results demonstrate that the proposed scheme can effectively reduce the handover delay while ensuring the quality of service （QoS） requirements of vehicular applications.

Keywords： internet of vehicles； location awareness； seamless handover; software-defined network

隨著智能交通系統(tǒng)的不斷發(fā)展，實(shí)時(shí)交通監(jiān)控、道路安全預(yù)警、遠(yuǎn)程車輛診斷及車載多媒體服務(wù)等應(yīng)用已成為現(xiàn)代車聯(lián)網(wǎng)的核心功能模塊[1]。（剩余15202字）