A Mobility Management Scheme For6Lowpan

With the improvement of IoT (Internet of Things) and wireless communication technology, LoWPAN (Low-power Wireless Personal Area Network) will gains its porpularity in our daily life.6LoWPAN is the protocol to transmit IPv6packets over LoWPANs. To ensure the continuous communication of6LoWPAN nodes to the Internet while these nodes are moving, we need an effective mobility management scheme, which is a critical issue in IoT as well.Resource constrained is the most primary property of6LoWPAN nodes, which have low bandwith, low power and low computing capacity. As a result, traditional mobile IP protocols are not suitable for6LoWPAN nodes, since these host-based protocols require most of the signaling packets on the node’s end. In addition, in the existing mobile IP protocols, some signaling packets for mobility management have sizes larger than the maximum payload of the IEEE802.15.4MAC frame so that they have to be fragmented into multiple pieces carried in6LoWPAN networks, which increases the loss probability and the delay of the signaling packets. The proposed WoMIPv6(WPAN oriented Mobile IPv6) exploits MAP (Mobility Anchor Point) to complete most of the mobility management in roles of mobile nodes, reducing the amount of signaling packets on the node’s end, enabling mobile nodes just exchange simple signaling packets with MAPs to complete mobility management. Furthermore, we use header compression to decrease sizes of signaling packets, which leads to each signaling packet in the WoMIPv6can be carried within one single IEEE802.15.4MAC frame without being fragmented, reducing local registration communication cost of mobile nodes, access routers and MAPs as well. In addition, the delay of local registration in the WoMIPv6is derived, which is compared with the local registration delay of HMIPv6(Hierarchical Mobile IPv6) for different link packet loss rate. Numeric analyses show that, WoMIPv6betters than HMIPv6both in signaling transmission overhead and handoff delay and it is suitable for6LoWPAN networks.