无线传感器/执行器网络移动性管理和休眠唤醒机制的联合调度与优化

In wireless sensor and actor networks (WSAN), the coexistence of the mobile actor nodes and sleeping sensor nodes makes the data transmission process has the characteristics of time-varying and delay simultaneously. Therefore, the independent design of mobility management and duty cycle scheduling is difficult to meet the requirements of quality of service (QoS) and energy efficiency. In order to solve these problems, this project will study the joint scheduling and optimization of mobility management and duty cycle in WSAN. At first, we will exploit the spatio-temporal relations between the actor movement path and data transmission path, then use the "footprints" of actor nodes to characterize the dynamic characteristics of the transmission path. Then we will combine the footprint tracking algorithm with location services to design the mobility management schemes that can tolerate the sleep latency. Based on the transmission path established by the mobility management, we will study asynchronous duty cycle scheduling scheme which builds a continuous wake-up slots sequence to reduce the waiting delay during data transmission. Finally, we will evaluate the impact of the proposed mobility management and duty cycle scheduling schemes on network performance, and try to solve the optimization problem of minimize the energy consumption under QoS constraints. The research project can provide theoretical and technical support to improve the WSAN mobility support and energy efficiency. The project will promote the application of mobile actors and duty cycle in WSAN. Furthermore, it will provide theoretical and technical support to improve QoS and energy efficiency in WSAN.

无线传感器/执行器网络(WSAN)中移动执行器节点与休眠传感器节点的共存，使得数据传输过程同时具有时变和时滞的特性。因此，独立的移动性管理和休眠唤醒机制难以满足用户对传输的服务质量(QoS)和能耗效率的需求。针对上述问题，本项目将对移动性管理和休眠唤醒机制的联合调度与优化展开研究。研究首先利用执行器节点的移动路径与传输路径的时空相关性，通过执行器节点的"足迹"来刻画传输路径的动态特性，进而将足迹跟踪与位置服务算法结合，设计能够容忍休眠时延的移动性管理机制；其次，以移动性管理机制建立的传输路径为基础，设计分段的休眠唤醒机制，通过建立连续的唤醒时隙序列减少传输过程的等待时延；最后综合分析移动性管理和休眠唤醒机制对网络性能的影响，求解在QoS约束条件下的能耗优化问题。本项目的研究将促进移动执行器和休眠机制在WSAN中的应用，并为提高WSAN的服务质量和能耗效率提供理论和技术支撑。

无线传感器/执行器网络(WSAN)中移动执行器节点与休眠传感器节点的共存，使得数据传输过程同时具有时变和时滞的特性。因此，独立的移动性管理和休眠唤醒机制难以满足用户对传输的服务质量(QoS)和能耗效率的需求。针对上述问题，本项目对移动性管理和休眠唤醒机制的联合调度与优化展开研究，获得了以下研究成果：1) 对于移动执行器节点与休眠传感器节点共存的网络拓扑进行分析与建模，并基于该模型完成了面向节点移动性的休眠唤醒联合调度机制的设计，随后推导出网络能耗模型并进行能耗优化。2) 完成了容忍休眠时延的移动性管理机制设计与优化，包括基于覆盖率与连通性研究的条纹泛洪算法，以及基于足迹信息的位置服务算法。3) 完成了无线传感器/执行器网络实验平台建设，包括基于无线传感器/执行器网络的工业无线人机交互平台设计，以及面对机器的移动执行器节点自动接入算法。本项目的研究成果促进了移动执行器和休眠机制在WSAN中的应用，为提高 WSAN 的服务质量和能耗效率提供理论和技术支撑，同时还对WSAN在工业领域的应用进行了探索。