摘要
为了提高工业物联网感知层无线数据传输的可靠性,主流的工业物联网标准普遍采用跳信道技术。通过周期性地评估和屏蔽受到干扰的信道,网络能够感知信道状态并自适应工作在传输质量较好的信道上。为了能更好地满足工业网络确定性与低功耗的特点,根据工业物联网感知层中信道使用率的不同,提出一种基于确定性调度机制的感知层信道评估方法,其核心思想是根据网络的数据流和跳信道模式统计信道使用率,计算每个信道的评估时间,再对信道进行周期性评估。仿真结果表明,该方法充分地利用了网络信道资源,并有效地提高了通信过程中的抗干扰性、可靠性和吞吐量。
Most networks based on industrial internet of Things（IIOT） employ adaptive channel hopping mechanism to improve the transmission reliability.The network can sense the condition channels and avoid interfered channels.In order to meet the IIOT requirement of determinism and energy efficiency,a channel estimation method for IIOT based on deterministic scheduling and channel utilization is proposed.Firstly,it calculates the channel utilization according to the network data stream and channel hopping mode.Then it counts the estimation duration of each channel,and finally evaluates the channel quality periodically.Simulation results indicate that the proposed scheme explores the channel resources effectively and improves the performance of anti-interference,reliability and throughput for the networks.
出处
《重庆邮电大学学报（自然科学版）》
CSCD
北大核心
2013年第2期154-160,共7页
Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)
基金
国家重大科技专项(2012ZX03005002
2013ZX03005005)
重庆市青年骨干教师资助项目
重庆邮电大学博士启动基金(A2011-39)~~
关键词
工业物联网
跳信道
信道评估
确定性调度
industrial internet of Things
channel hopping
channel assessment
deterministic scheduling
