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首页> 外文期刊>International Journal of Environmental Research and Public Health >LBMR: Load-Balanced Multipath Routing for Wireless Data-Intensive Transmission in Real-Time Medical Monitoring
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LBMR: Load-Balanced Multipath Routing for Wireless Data-Intensive Transmission in Real-Time Medical Monitoring

机译：LBMR：负载均衡的多路径路由，用于实时医疗监控中的无线数据密集型传输

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In wireless networks, low-power Zigbee is an excellent network solution for wireless medical monitoring systems. Medical monitoring generally involves transmission of a large amount of data and easily causes bottleneck problems. Although Zigbee’s AODV mesh routing provides extensible multi-hop data transmission to extend network coverage, it originally does not, and needs to support some form of load balancing mechanism to avoid bottlenecks. To guarantee a more reliable multi-hop data transmission for life-critical medical applications, we have developed a multipath solution, called Load-Balanced Multipath Routing (LBMR) to replace Zigbee’s routing mechanism. LBMR consists of three main parts: Layer Routing Construction (LRC), a Load Estimation Algorithm (LEA), and a Route Maintenance (RM) mechanism. LRC assigns nodes into different layers based on the node’s distance to the medical data gateway. Nodes can have multiple next-hops delivering medical data toward the gateway. All neighboring layer-nodes exchange flow information containing current load, which is the used by the LEA to estimate future load of next-hops to the gateway. With LBMR, nodes can choose the neighbors with the least load as the next-hops and thus can achieve load balancing and avoid bottlenecks. Furthermore, RM can detect route failures in real-time and perform route redirection to ensure routing robustness. Since LRC and LEA prevent bottlenecks while RM ensures routing fault tolerance, LBMR provides a highly reliable routing service for medical monitoring. To evaluate these accomplishments, we compare LBMR with Zigbee’s AODV and another multipath protocol, AOMDV. The simulation results demonstrate LBMR achieves better load balancing, less unreachable nodes, and better packet delivery ratio than either AODV or AOMDV.
机译：在无线网络中，低功耗Zigbee是用于无线医疗监控系统的出色网络解决方案。医疗监视通常涉及大量数据的传输，并且容易引起瓶颈问题。尽管Zigbee的AODV网格路由提供了可扩展的多跳数据传输来扩展网络覆盖范围，但它最初却没有，并且需要支持某种形式的负载平衡机制来避免瓶颈。为了确保对生命攸关的医疗应用更加可靠的多跳数据传输，我们开发了一种多路径解决方案，称为负载平衡多路径路由（LBMR），以取代Zigbee的路由机制。 LBMR由三个主要部分组成：层路由构造（LRC），负载估计算法（LEA）和路由维护（RM）机制。 LRC根据节点到医疗数据网关的距离将其分配到不同的层中。节点可以具有多个下一跳，向网关传送医疗数据。所有相邻的层节点交换包含当前负载的流信息，LEA会使用该信息来估计网关下一跳的未来负载。使用LBMR，节点可以选择负载最少的邻居作为下一跳，从而可以实现负载均衡并避免瓶颈。此外，RM可以实时检测路由故障并执行路由重定向以确保路由的鲁棒性。由于LRC和LEA可以防止瓶颈，而RM可以确保路由容错，因此LBMR为医疗监控提供了高度可靠的路由服务。为了评估这些成就，我们将LBMR与Zigbee的AODV和另一种多路径协议AOMDV进行了比较。仿真结果表明，与AODV或AOMDV相比，LBMR可以实现更好的负载平衡，更少的不可达节点和更好的数据包传输率。

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