WBSN中一种针对重要生命信号传输的DI-RED拥塞控制算法  

A DI-RED Congestion Control Algorithm for Vital Signal Transmission in WBSN

作　　者：徐倩毓 张琦 陈艺蕾 王丽 张文倩 XU Qianyu;ZHANG Qi;CHEN Yilei;WANG Li;ZHANG Wenqian(School of Electronic Engineering,Xi′an Aeronautical Institute,Xi′an 710077,China)

机构地区：[1]西安航空学院电子工程学院,西安710077

出　　处：《西安航空学院学报》2024年第3期65-72,共8页Journal of Xi’an Aeronautical Institute

基　　金：西安航空学院校级科研基金项目(2022KY0201;2023KY1203);陕西省科技厅项目(2024JC-YBQN-0644)。

摘　　要：“互联网+医疗”的新型医护模式使无线生理传感网络(WBSN)面临着流量传输问题,其中解决重要生命信号传输的拥塞控制问题至关重要,为此提出了一种基于DI-RED拥塞控制算法。通过建立多跳的数据传输的系统模型,生物传感器收集到的多类型用户生命信息经信息融合单元进行业务分级,无循环优先级汇聚单元进行分组传输,并通过DI-RED拥塞控制单元进行主动丢弃数据分组、通知发送方降低传输速率以缓解父节点的拥塞问题。将父节点缓存中的队列到达状态、离开状态和保持状态构造成离散时间Markov链,结果采用排队论获得系统稳态和性能评价指标。所提算法的数值模拟实验验证了该算法的有效性。WBSN(wireless body sensor network)is faced with the traffic transmission problem due to the new medical care mode of“Internet+medical”.It is very important to solve the congestion control problem of important life signal transmission.Therefore,a congestion control algorithm based on DI-RED is proposed.Through the establishment of a multi-hop data transmission system model,the multi-type users′life information collected by the biosensor is classified by the information fusion unit,the non-cyclic priority aggregation unit is transmitted in packets,and the DI-RED congestion control unit actively discards the data packets and notifies the sender to reduce the transmission rate to alleviate the congestion problem of the parent node.The arrival state,departure state and holding state of the queue in the parent node cache are constructed into discrete time Markov chain.The effectiveness of the proposed algorithm is verified by numerical simulation experiments.

关 键 词：无线生理传感网络 拥塞控制 优先级 排队论 

分 类 号：TN911.1[电子电信—通信与信息系统]