基于能效的线性调频超宽带无线体域网数据传输及系统优化

项目名称： 基于能效的线性调频超宽带无线体域网数据传输及系统优化

项目编号： No.61202399

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 计算机科学学科

项目作者： 贺鹏飞

作者单位： 烟台大学

项目金额： 23万元

中文摘要： 无线体域网（WBAN）是能量受限的网络，提高能效，延长网络生命周期至关重要。本项目采用线性调频超宽带（Chirp-UWB）作为WBAN的传输技术，在IEEE 802.15 TG6发布的信道模型下，将能效函数引入WBAN中，以能效为目标参量进行物理层、MAC层和网络层联合跨层优化的研究。主要针对基于簇的多跳树型拓扑结构，物理层融合Chirp扩频和UWB的技术特点，采用灵活的频谱规划和自适应调制编码；MAC层根据业务优先级和数据传输模式，均衡节点能耗，设计基于TDMA的时隙调度机制和轻量级的数据传输协议。在能效优化的同时，分析网络节点的包传送率、吞吐量和时延特性，结合多WBAN微微网的共存性干扰，研究跨层优化带来能效提高的同时增加的额外开销，折衷优化形成高效、低功耗、低复杂度和高可靠性的Chirp-UWB WBAN数据传输机制。本项目的研究将为形成我国的WBAN标准提供建议和可参考的理论依据。

中文关键词： 无线体域网；能效；路由协议；自适应调制和编码；差错控制

英文摘要： Wireless Body Area Network (WBAN) is an energy-limited network, improving energy efficiency to further prolong the network lifetime is crucially important. In this research, the Chirp-UWB is proposed as the transmission technology and the energy efficiency function is introduced in WBAN. In order to improve the energy efficiency, the physical layer, the MAC layer and the network layer are united for a cross-layer optimization over the channel model released by IEEE 802.15 TG6. Multi-hop cluster-tree topology is the focus of our interests. Combining the remarkable properties of Chirp spread spectrum and UWB technologies, flexible spectrum planning, adaptive modulation and coding are adopted in the physical layer. Furthermore, for different priority level services and data transmission modes, the TDMA timeslot scheduling mechanism and lightweight data transfer protocol are designed to balance nodes' power consumption in the MAC layer. At the same time of energy efficiency optimization, the packet delivery ratio, the throughput and the transmission delay of WBAN nodes are deduced. With the further coexistence interferences analysis of multiple WBAN piconets, the additional network overheads are considered to achieve the trade-off among high efficiency, low power consumption, low complexity and high reliability for

英文关键词： Wireless Body Area Network；Energy Efficiency；Routing Protocol；Adaptive Modulation and Coding；Error Control