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基于Castalia的无线体域网研究

发布时间:2018-12-11 08:27
【摘要】:无线体域网(WBAN)属于物联网的概念,将人体与互联网连接到一起。WBAN在远程医疗诊断、医疗监护和生理参数测量等方面都发挥着至关重要的作用,可以实时的将人体的生理参数传至手机或电脑等设备上,对人体的健康状况做出正确的判断,从而可以做到有效的预防和及时的治疗。典型的WBAN最重要的设计和实施规则之一是可靠性。当节点向汇聚节点发送数据包时,由于环境的影响,节点之间的干扰,不稳定链路或其他原因,节点可能在路由过程中丢失数据包。因此,本文将尝试模拟人体的真实环境,对其可靠性做出研究。本文基于Castalia的仿真平台,构建了WBAN的框架结构,采用了对数正态阴影衰落模型作为平均路径损耗,采用了IEEE802.15.6数据传输协议,并调用了干扰模型以符合人体的真实环境,对安放于人体的传感器节点的个数也做出调整,使其尽可能的包含当前人体大部分的传感器节点,以使仿真的环境更加接近于人体环境。在此基础之上,本文对植入的贪婪周长无状态路由与Castalia原有的多径环形路由的性能进行了仿真分析。本文的创新点在于:第一,对应用层做出了调整,加入了定位的功能,可实时监测节点的位置,并将拓扑结构设置为两跳拓扑。第二,加入了节点的移动性,在无线信道中对节点的移动性的路径损耗进行了建模,同时调用了移动管理模块下的线性移动管理模块,使网络架构更加符合体域网传感器网络;第三,对贪婪周长无状态路由(GPSR)和多径环形路由(MultipathRingsRouting)两种路由协议的性能进行了仿真。首先,分别分析了两种路由协议下,不同节点数目、不同速率下的包的吞吐量、时延、丢包率,之后对比分析了基于GPSR和Multipath Ring Routing两种路由协议下无线体域网的吞吐量、包延迟、包接收情况,为GPSR和MultipathRing Routing两种路由协议应用到无线体域网上提供了一定的理论依据和参考价值。
[Abstract]:Wireless body area network (WBAN) belongs to the concept of the Internet of things, which connects the human body with the Internet. WBAN plays an important role in telemedicine diagnosis, medical monitoring and physiological parameter measurement. The physiological parameters of the human body can be transmitted to the mobile phone or computer in real time to make a correct judgment on the health status of the human body, so that effective prevention and timely treatment can be achieved. One of the most important design and implementation rules of a typical WBAN is reliability. When a node sends a packet to a sink node, due to the influence of the environment, the interference between nodes, unstable links or other reasons, the node may lose the packet during the routing process. Therefore, this paper will try to simulate the real environment of human body and study its reliability. In this paper, based on the simulation platform of Castalia, the frame structure of WBAN is constructed. The logarithmic normal shadow fading model is used as the average path loss, and the IEEE802.15.6 data transmission protocol is adopted, and the interference model is called to fit the real environment of human body. The number of sensor nodes placed in the human body is also adjusted to make it contain as many sensor nodes as possible, so that the simulated environment is closer to the human environment. On this basis, the performance of the embedded greedy perimeter stateless routing and the original multipath ring routing of Castalia are simulated and analyzed in this paper. The innovations of this paper are as follows: first, the application layer is adjusted, the location function is added, the node position can be monitored in real time, and the topology structure is set to two-hop topology. Secondly, the mobility of nodes is added, and the path loss of the mobility of nodes is modeled in the wireless channel, and the linear mobile management module under the mobile management module is called to make the network architecture more in line with the sensor network of the body area network. Thirdly, the performance of greedy cycle stateless routing (GPSR) and multipath ring routing (MultipathRingsRouting) are simulated. First of all, the throughput, delay and packet loss rate of two routing protocols, different nodes and different rates, are analyzed respectively. Then, the throughput and packet delay of wireless body area network based on GPSR and Multipath Ring Routing routing protocols are compared and analyzed. Packet reception provides a theoretical basis and reference value for the application of GPSR and MultipathRing Routing routing protocols to wireless body area networks.
【学位授予单位】:烟台大学
【学位级别】:硕士
【学位授予年份】:2017
【分类号】:TN92

【参考文献】

相关期刊论文 前10条

1 谢语天;王s,

本文编号:2372227


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