Chun Seung-Man, Park Jong-Tae
Gyeongbuk Institute of IT Convergence Industry Technology, Gyeongbuk 38463, Korea.
School of Electronics Engineering, Kyungpook National University, Daegu 41566, Korea.
Sensors (Basel). 2017 Jan 12;17(1):136. doi: 10.3390/s17010136.
Under unreliable constrained wireless networks for Internet of Things (IoT) environments, the loss of the signaling message may frequently occur. Mobile Internet Protocol version 6 (MIPv6) and its variants do not consider this situation. Consequently, as a constrained device moves around different wireless networks, its Internet Protocol (IP) connectivity may be frequently disrupted and power can be drained rapidly. This can result in the loss of important sensing data or a large delay for time-critical IoT services such as healthcare monitoring and disaster management. This paper presents a reliable mobility management mechanism in Internet of Things environments with lossy low-power constrained device and network characteristics. The idea is to use the Internet Engineering Task Force (IETF) Constrained Application Protocol (CoAP) retransmission mechanism to achieve both reliability and simplicity for reliable IoT mobility management. Detailed architecture, algorithms, and message extensions for reliable mobility management are presented. Finally, performance is evaluated using both mathematical analysis and simulation.
在物联网（IoT）环境中不可靠的受限无线网络下，信令消息的丢失可能经常发生。移动互联网协议第6版（MIPv6）及其变体并未考虑这种情况。因此，当一个受限设备在不同无线网络间移动时，其互联网协议（IP）连接可能会频繁中断，电量也会迅速耗尽。这可能导致重要传感数据丢失，或者给诸如医疗监测和灾害管理等对时间要求严格的物联网服务带来大幅延迟。本文提出了一种适用于具有有损低功耗受限设备和网络特性的物联网环境的可靠移动性管理机制。其思路是利用互联网工程任务组（IETF）的受限应用协议（CoAP）重传机制，以实现可靠的物联网移动性管理的可靠性和简单性。文中给出了可靠移动性管理的详细架构、算法和消息扩展。最后，通过数学分析和仿真对性能进行了评估。
