Research Of Wireless Body Area Network Based On Castalia

Wireless Body Area Network(WBAN)is an energy-constrained wireless sensor network.It connects the human body with the Internet.WBAN is a very useful tool for WSN in telemedicine diagnostics,medical monitoring and physiological parameter measurement.It can always transport the body’s physiological parameters to mobile phones or computer equipment and make a correct judgment on the health of the human body,which can be effectively prevent and timely treatment.One of the most important design and implementation rules for typical WBAN is reliability.When a node sends a packet to the sink node,due to environmental impact,the interference between nodes,unstable links or other reasons,the nodes may lose packets during routing.Therefore,in this thesis,we will try to simulate the real environment of human body and study its reliability.Based on the Castalia simulation platform,the framework of the wireless body network is constructed,and the logarithmic normal shadow fading model is used as the average path loss,using the IEEE802.15.6 data transport protocol,calling a additional interference model to meet the real environment of human body.The number of sensor nodes placed in the human body is also adjusted to make it possible to contain most of the sensor nodes in the human body as far as possible,so that the simulation environment is closer to the human environment.The innovations of this thesis are as follows: Firstly,the application layer has been adjusted to join the positioning function,real-time monitoring of the location of the node,and the topology is set to two hop topology.Secondly,joined the node mobility and the path loss of node mobility is modeled in wireless channel.At the same time,the linear mobility module under the mobile management module is called to make the network more consistent with the human body sensor networks.Thirdly,the performance of GPSR and Multipath Ring Routing in WBAN is simulated.we analyze the throughput of packets under different routing protocols with different number of nodes and different rates undertwo routing protocols,after we comparative analysis the throughput,packet delay and packet reception of the wireless bady area network based on GPSR and Multipath Rings Routing protocols.It provides a theoretical basis and reference value for the application of GPSR and Multipath Ring Routing protocols in WBAN.