6LoWPAN无线传感器网络无缝移动切换方案

提出了6LoWPAN无线传感器网络无缝移动切换(SMH)方案，移动切换控制信息在一跳范围内交互，并通过IPv6接入节点树网络结构自动实现路由，降低了移动切换代价，缩短了移动切换延迟。该方案提出了无线传感器节点的IPv6地址的分层结构，有效地缩短了地址长度，降低了传输功耗；移动传感器节点无须转交地址，即无须进行移动传感器节点家乡地址与转交地址的绑定操作，降低了移动切换代价，缩短了移动切换延迟。从理论和仿真两个角度对MIPv6、Inter-MARIO及SMH的移动切换代价和移动切换延迟等性能参数进行了分析比较。分析结果表明，SMH的移动切换代价更小，移动切换延迟更短。

Seamless Mobility Handover for 6LoWPAN Wireless Sensor Network

The paper proposes a seamless mobility handover scheme, SMH, for 6LoWPAN wireless sensor networks. In SMH, the control information for mobility handover is interacted within one hop scope, and the routing of the control information is automatically performed through the IPv6-ingress-node-tree network architecture, which reduces the mobility handover cost and shortens the mobility handover delay. SMH proposes the hierarchical structure of the IPv6 address for sensor nodes and effectively shortens the length of an IPv6 address, which reduces the transmission cost. In SMH, a mobile sensor node does not need a care-of address during the mobility handover process, that is, SMH does not need to perform the binding operation between a mobile sensor node's home address and its care-of address, so the mobility handover cost is reduced and the mobility handover delay is shortened. From both the theoretical perspective and the simulative perspective, the paper analyzes the performance parameters of MIPv6, Inter-Mario and SMH, including the mobility handover cost and the mobility handover delay. The analytical results show that the mobility handover cost of SMH is less and the mobility handover delay is shorter.