适用于LoWPAN的域间软切换移动IPv6协议

Low-power Wireless Personal Area Network (LoWPAN) plays an important role in the applications of Internet of Things (IoT), which enables smart objects to communicate with the nodes in IP network. It is a significant research topic in IoT to keep the communication between a samrt object and an IP network node uninterrupted. In this paper, a mobile IPv6 protocol with soft inter-domain handover, which is suitable for LoWPAN, is presented. The proposed protocol is able to overcome the drawback in the existing MIPv6 protocols, i.e., the communications between a mobile node (MN) and its correspondent node (CN) may be interrupted due to the fact that the MN's on-line care-of address changes before correspondent registration process is completed when the handover between mobile anchor points (MAPs) occurs. In this paper, a new mobility option is introduced for mobility signalings so that MAPs can discover the existence of CNs and complete the correspondent registration in time, which enables soft handover between MAPs and reduces the failure probability of the communications between the CNs and the MN.