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作 者:Yinghua Zhang Rui Cao Lixin Tian Rong Dai Zhennan Cao Jim Feng
机构地区:[1]Dawning Information Industry Co.,Ltd.,Beijing,100193,China [2]Dawning Information Industry Chengdu Co.,Ltd.,Chengdu,610041,China [3]Amphenol Global Interconnect Systems,San Jose,CA,95131,US
出 处:《Computers, Materials & Continua》2022年第12期6513-6534,共22页计算机、材料和连续体(英文)
基 金:This work is supported by Sichuan Science and Technology Program(NO.2020YFG0321);Standard Development and Test bed Construction for Smart Factory Virtual Mapping Model and Digitized Delivery(No.MIIT 2019-00899-3-1);Tianjin Intelligent Factory based on Industrial Internet Digital Twin Platform(No.20201030).
摘 要:With the continuous maturity of the fifth generation(5G)communications,industrial Internet of Things(IIoT)technology has been widely applied in fields such as smart factories.In smart factories,5G-based production line monitoring can improve production efficiency and reduce costs,but there are problems with limited monitoring coverage and insufficient wireless spectrum resources,which restricts the application of IIoT in the construction of smart factories.In response to these problems,we propose a hybrid spectrum access mechanism based on Non-Orthogonal Multiple Access(NOMA)cooperative relaying transmission to improve the monitoring coverage and spectrum efficiency.As there are a large number of production lines that need to be monitored in smart factories,it is difficult to realize real-time monitoring of all production lines due to insufficient wireless resources.Therefore,we divide the production lines into high priority and low priority,and introduce cognitive radio technology to increase the number of monitoring production lines.In order to better describe the wireless fading channel environment in the factory,the two-wave with diffuse power(TWDP)channel is discussed to simulate the real factory environment and the outage probability of the secondary production line data transmission is derived in the proposed mechanism.Compared with the traditional mechanism,the proposed transmission mechanism can ensure the continuity of the secondary transmission,greatly reduce the outage probability of the secondary transmission,and improve the efficiency of the monitoring of the production lines.
关 键 词:RELAY IIoT outage probability NOMA TWDP BEAM-FORMING
分 类 号:TP391.44[自动化与计算机技术—计算机应用技术]
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