Mobility Support for the User in NDN-Based Cloud Storage Service

Abstract

To provide seamless mobility support for the User in NDN (Named Data Networking) based cloud storage service, we propose a proxy based mobility support approach, called PMNDN. In this approach, we first introduce an ID that is structurally similar to the content name, to maintain the routing scalability of NDN architecture, and improve the addressing efficiency of INTEREST packet for NDN-based cloud storage service. Then, we deploy a new functional entity named Proxy, which is responsible for maintaining the reach-ability state of the User. We also extend the basic functionalities of the NDN Access Routers, such as tracking the mobility status of the User and initiating the handoff related signaling to the Proxy. With that, the User avoids participation in mobility signaling exchange. Finally, we construct an elastic 3-layer network analysis model, and compare the handoff performance of the mobility support approaches with that in NDN architecture and IPv6 architecture via analytical and simulation investigation. Our results indicate that not only PMNDN has lower handoff cost, it also has shorter handoff latency and less packet losses during the handoff process.