摘要
当前物联网生态呈现出明显的自组织、多业务,以及非确定等特性,为合理配置网络资源,优化网络系统容量与处理质量,提出了基于概率检测的物联网节点随机多址接入协议。根据物联网节点接入模型的动态变化对信道资源的影响,设计了一种分组格式的信息帧,帧头与数据体采取差异性扩频处理,依据扩频能够准确检测信息帧的完整性,有利于抗多址性能。此外,利用多址接入时主次节点信息帧的干扰效率对网络资源进行衡量,考虑了节点多址接入的资源利用和干扰问题,选择中断概率检测作为约束条件,从而将网络资源分配转化成凸问题,并根据伯恩斯坦法进行化简求解。最后对所设计的随机多址接入协议进行了性能分析。通过仿真,验证了所设计的节点多址接入协议能够对信道资源进行合理分配,改善数据传输质量与系统吞吐量,有效提高网络性能。
At present,the Internet of things is characterized by self-organization,multi service and uncertainty.In order to allocate network resources reasonably,optimize network system capacity and processing quality,a random multiple access protocol based on probability detection is proposed.According to the influence of the dynamic change of Internet of things node access model on channel resources,a packet format information frame was designed.The frame header and data body were processed by differential spread spectrum.According to the spread spectrum,the integrity of information frame can be accurately detected,which is conducive to the anti-multiple access perform-ance.In addition,the interference efficiency of primary and secondary nodes'information frames was used to measure the network resources.The resource utilization and interference of nodes'multiple access were considered.The detec-tion of interruption probability was selected as the constraint condition,so that the allocation of network resources can be transformed into a convex problem,which was simplified and solved according to Bernstein method.Finally,the performance analysis and simulation experiments of the designed random multiple access protocol were carried out to verify that the designed node multiple access protocol can reasonably allocate channel resources,and effectively im-prove data transmission quality and system throughput and network performance.
作者
周清松
黄嵩
陈洪磊
ZHOU Qing-song;HUANG Song;CHENG Hong-lei(School of Technology,Puer University,Puer Yunnan 665000,China;College of Information Science and Technology,Tibet University,Lhasa Tibet Autonomous Region,850000,China)
出处
《计算机仿真》
北大核心
2020年第12期148-152,共5页
Computer Simulation
基金
云南省教育厅指导性项目(2016ZDX156)。
关键词
物联网
节点多址接入
分组信息帧
信道资源分配
概率检测
Internet of things
Node multiple access
Packet information frame
Channel resource allocation
Proba-bility detection
