USE OF HASH-BASED PROXY MOBILE IPV6 FOR MOBILITY MANAGEMENT IN COAP BASED INTERNET-OF-THINGS NETWORKS

Abstract

In the field of Internet-of-Things, Constrained application Protocol (CoAP) has emerged as a new protocol. Recently, some mobility schemes have been proposed based on constrained application protocol based proxy mobile IPv6 (CoAP PMIP). This mobility scheme tends to induce large handover delay and signalling cost because of using a centralized local mobility anchor (LMA) for mobility management and data delivery. To address these problems, a hash-based proxy mobile IPv6 based constrained application protocol is proposed, named CoAP-PMIP-Hash. In the proposed scheme, the functions of Local Mobility Anchor (LMA) are distributed among each Mobile Access Gateway (MAG). The control functions for binding update and query operations are performed based on a hash function. From the simulation results, it is shown that the proposed scheme performs better than the existing scheme in terms of the end-to-end delay, throughput, and signalling cost.