一种对医疗无线传感设备的QoS评估方法

A QoS evaluation method for medical wireless sensor equipment

随着无线医疗技术的发展,如何提高技术的可靠性以及减小延时是急需解决的问题。为了实现这些目标,需要在无线网络中适当的使用差错控制。在此基于时分复用和基于Reed-Solomon编码的前向纠错(FEC)机制,提出了一个医疗级QoS无线传感系统模型。该系统使用最坏情况下的执行时间分析来确定吸收这种抖动所需的缓冲区大小,并随机地保证在衰落信道上的无缝服务,最终可以有效地纠正错误突发和限制服务延迟。在实验部分,通过开发的QoS分析工具对该模型进行了研究,找到了同时满足医疗应用可靠性和延迟要求的服务参数。

With the development of wireless medical technology,how to improve the reliability of the technology and reduce the delay is an urgent problem to be solved.In order to achieve these goals,error control needs to be properly used in wireless networks.Based on the time division multiplexing(TDM)and forward error correction(FEC)mechanism based on Reed-Solomon coding,a medical-grade QoS wireless sensor system model is proposed.The system uses worst-case execution time analysis to determine the buffer size required to absorb this jitter,and randomly guarantees seamless service on fading channels,and ultimately can effectively correct error bursts and limit service delays.In the experimental part,the model was studied through the developed QoS analysis tool,and the service parameters that met the reliability and delay requirements of medical applications were found.