为提高无线体域网(Wireless Body Area Network,WBAN)能量效率和实现高吞吐量,提出一种多跳拓扑结构来节约能耗,延长网络寿命。通过设定代价函数选出前驱节点,使得被选用节点具有较多的剩余能量和较小传输间距。代价函数的剩余能量参数...为提高无线体域网(Wireless Body Area Network,WBAN)能量效率和实现高吞吐量,提出一种多跳拓扑结构来节约能耗,延长网络寿命。通过设定代价函数选出前驱节点,使得被选用节点具有较多的剩余能量和较小传输间距。代价函数的剩余能量参数用于平衡传感节点的能量损耗,距离参数确保包交付成功率。仿真结果表明,该协议得到稳定的高吞吐量,有助于WBAN对人体病症的连续监测。展开更多
With promising applications in e-health and entertainment, wireless body area networks （WBANs） have attracted the interest of both academia and industry. If WBANs are densely deployed within a small area, serious pr...With promising applications in e-health and entertainment, wireless body area networks （WBANs） have attracted the interest of both academia and industry. If WBANs are densely deployed within a small area, serious problems may arise between the WBANs. In this paper, we discuss issues related to the coexistence of WBANs and investigate the main factors that cause inter-WBAN interference. We survey inter- WBAN interference mitigation strategies and track recent research developments. We also discuss unresolved issues related to inter-WBAN interference mitigation and propose fu- ture research directions.展开更多
Wireless Body Area Networks(WBANs)refer to small sensor network that consists of sensor devices mounted on the surface of the body or implanted in the body,as such networks are employed to harvest physiological data o...Wireless Body Area Networks(WBANs)refer to small sensor network that consists of sensor devices mounted on the surface of the body or implanted in the body,as such networks are employed to harvest physiological data of the human body or to act as an assistant regulator of several specific physiological indicators of the human body.The sensor devices transmit the harvested human physiological data to the local node via a public channel.Before transmitting data,the sensor device and the local node should perform mutual authentication and key agreement.It is proposed in this paper a secure mutual authentication scheme of blockchain-based in WBANs.To analyze the security of this scheme,formal security analysis,and informal security analysis are used,then the computation and communication costs are compared with those of the relevant schemes.Relevant experimental results reveal that the proposed scheme exhibit more effective control over energy consumption and promising.展开更多
In the modern age, Wireless Body Area Network (WBAN) becomes very popular everywhere for monitoring healthcare services remotely. However, the WBAN system has lagged in efficient power consumption till now. As WBAN is...In the modern age, Wireless Body Area Network (WBAN) becomes very popular everywhere for monitoring healthcare services remotely. However, the WBAN system has lagged in efficient power consumption till now. As WBAN is formed with several portable devices, low power consumption will ensure battery lifetime. In this paper, an analysis of Transmission Power Control (TPC) over WBAN has been conducted. A ZigBee based WBAN model with different network topologies and data rates has been proposed in the experiment. WBAN data-management technique has been proposed due to reducing more data transmission. Less data transmission reduces overall power consumption. The whole work has been done using OPNET and OMNET++ network simulators. Six sensor nodes have been used with a ZigBee coordinator in the simulation scenario where throughput, load, delay, data traffic, amount of power consumption, packet delivery ratio, etc. have been used as simulation parameters. TPC analysis indicates the power consumptions in different topologies, with different data rates. Several simulation scenarios were run and the results were analyzed in this paper.展开更多
无线体域网(WBAN,Wireless Body Area Network)是当前一个重要的技术热点。本文重点研究多个体域网组成的分布式网络功率控制策略,结合近年来对这一问题的研究成果,并根据体域网以人体作为网络环境这一特点提出了多个体域网之间的功率...无线体域网(WBAN,Wireless Body Area Network)是当前一个重要的技术热点。本文重点研究多个体域网组成的分布式网络功率控制策略,结合近年来对这一问题的研究成果,并根据体域网以人体作为网络环境这一特点提出了多个体域网之间的功率控制急需解决的问题以及面临的挑战。展开更多
Message integrity is found to prove the transfer information of patient in health care monitoring system on the human body in order to collect and communicate the human personal data. Wireless body area network (WBAN)...Message integrity is found to prove the transfer information of patient in health care monitoring system on the human body in order to collect and communicate the human personal data. Wireless body area network (WBAN) applications are the fast growing technology trend but security and privacy are still largely ignored, since they are hard to achieve given the limited computation and energy resources available at sensor node level. In this paper, we propose simple hash based message authentication and integrity code algorithm for wireless sensor networks. We test the proposed algorithm in MATLAB on path loss model around the human body in two scenarios and compare the result before and after enhancement and show how sensors are connected with each other to prove the message integrity in monitoring health environment.展开更多
文摘为了探索高频段室内无线体域网通信的可行性,对11 GHz室内无线体域网的传播特性进行了测量与研究。基于大量的测量数据,给出了11 GHz频段室内无线体域网的路径损耗、阴影效应与均方根时延扩展的统计特性。针对体对体通信时人体相对角度变化的场景,提出了一种具有相对角度影响的路径损耗模型,该模型利用了与身体角度相关的路径损耗指数、浮动截距以及身体角度因子修正相对角度变化引入的路径损耗。为了验证模型的适用性,对比分析了在小型空教室和大型会议室两种不同场景下相对角度变化对信道传播特性的影响。研究结果表明:在收发端距离固定的情况下,路径损耗指数、浮动截距和由相对角度引起的路径损耗(Path Loss caused by Relative Angle,PLRA)均与相对角度具有三角函数关系;在收发端相对角度固定时,PLRA与收发端距离无关,仅与相对角度有关。上述研究结果可以为11 GHz频段在未来室内无线体域网的使用提供理论基础与实践依据。
文摘为提高无线体域网(Wireless Body Area Network,WBAN)能量效率和实现高吞吐量,提出一种多跳拓扑结构来节约能耗,延长网络寿命。通过设定代价函数选出前驱节点,使得被选用节点具有较多的剩余能量和较小传输间距。代价函数的剩余能量参数用于平衡传感节点的能量损耗,距离参数确保包交付成功率。仿真结果表明,该协议得到稳定的高吞吐量,有助于WBAN对人体病症的连续监测。
基金supported by the National Natural Science Foundation of China under Grant No.61202406the USTC Grand Master Professor Funds under Grant No.ZC9850290097
文摘With promising applications in e-health and entertainment, wireless body area networks （WBANs） have attracted the interest of both academia and industry. If WBANs are densely deployed within a small area, serious problems may arise between the WBANs. In this paper, we discuss issues related to the coexistence of WBANs and investigate the main factors that cause inter-WBAN interference. We survey inter- WBAN interference mitigation strategies and track recent research developments. We also discuss unresolved issues related to inter-WBAN interference mitigation and propose fu- ture research directions.
基金supported by the National Natural Science Foundation of China(Grant Nos.61872138&61572188)。
文摘Wireless Body Area Networks(WBANs)refer to small sensor network that consists of sensor devices mounted on the surface of the body or implanted in the body,as such networks are employed to harvest physiological data of the human body or to act as an assistant regulator of several specific physiological indicators of the human body.The sensor devices transmit the harvested human physiological data to the local node via a public channel.Before transmitting data,the sensor device and the local node should perform mutual authentication and key agreement.It is proposed in this paper a secure mutual authentication scheme of blockchain-based in WBANs.To analyze the security of this scheme,formal security analysis,and informal security analysis are used,then the computation and communication costs are compared with those of the relevant schemes.Relevant experimental results reveal that the proposed scheme exhibit more effective control over energy consumption and promising.
文摘In the modern age, Wireless Body Area Network (WBAN) becomes very popular everywhere for monitoring healthcare services remotely. However, the WBAN system has lagged in efficient power consumption till now. As WBAN is formed with several portable devices, low power consumption will ensure battery lifetime. In this paper, an analysis of Transmission Power Control (TPC) over WBAN has been conducted. A ZigBee based WBAN model with different network topologies and data rates has been proposed in the experiment. WBAN data-management technique has been proposed due to reducing more data transmission. Less data transmission reduces overall power consumption. The whole work has been done using OPNET and OMNET++ network simulators. Six sensor nodes have been used with a ZigBee coordinator in the simulation scenario where throughput, load, delay, data traffic, amount of power consumption, packet delivery ratio, etc. have been used as simulation parameters. TPC analysis indicates the power consumptions in different topologies, with different data rates. Several simulation scenarios were run and the results were analyzed in this paper.
文摘Message integrity is found to prove the transfer information of patient in health care monitoring system on the human body in order to collect and communicate the human personal data. Wireless body area network (WBAN) applications are the fast growing technology trend but security and privacy are still largely ignored, since they are hard to achieve given the limited computation and energy resources available at sensor node level. In this paper, we propose simple hash based message authentication and integrity code algorithm for wireless sensor networks. We test the proposed algorithm in MATLAB on path loss model around the human body in two scenarios and compare the result before and after enhancement and show how sensors are connected with each other to prove the message integrity in monitoring health environment.
