earticle

영어

Currently, the volume of multimedia contents and services being transmitted over the Internet is rapidly increasing. The surge in multimedia traffic load coupled with the increase of mobile multimedia devices especially in highly urbanized cities can greatly affect the quality of service and experience in multimedia services. In highly urbanized cities, mobile terminals tend to roam over heterogeneous wireless networks which are comprised of different radio access networks (RATs) where cooperation among them is necessary to provide seamless handovers for a robust multimedia service delivery. In addition, most wireless systems were deployed using centralized mode wherein significant issues in terms of latency, signaling overhead, packet loss were present. This paper deals with the integration of both host-based and network-based optimizations to provide seamless handovers to mobile multimedia devices as they roam across the heterogeneous wireless networks. It aims to propose a decentralized mobility handover scheme that integrates the advantages of both the features of Hierarchical Mobile IPv6 (HMIPv6) and Proxy Mobile Internet Protocol version 6 (PMIPv6), leveraging their advantages to reduce the handover latency of mobile multimedia devices, thus, providing a better quality of service and experience. The proposed scheme alleviates the performance of the standard MIPv6, HMIPv6, and PMIPv6 handover management protocols, addressing high latency, signaling overhead, higher packet loss rates, and most of the issues present in centralized systems.