航空电子微距太赫兹互连DRR访问容量分析

doi:10.7527/S1000-6893.2020.24082

机载系统与电子系统专栏

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航空电子微距太赫兹互连DRR访问容量分析

李峭, 李佳, 熊华钢, 杨劲赫

北京航空航天大学电子信息工程学院, 北京 100191

收稿日期:2020-04-12 修回日期:2020-06-10 出版日期:2021-06-15 发布日期:1900-01-01
通讯作者: 李峭 E-mail:avionics@buaa.edu.cn

Accessing capacity of Deficit Round-Robin (DRR) in avionics very-short range THz interconnections

LI Qiao, LI Jia, XIONG Huagang, YANG Jinhe

School of Electronics and Information Engineering, Beihang University, Beijing 100191, China

Received:2020-04-12 Revised:2020-06-10 Online:2021-06-15 Published:1900-01-01

摘要/Abstract

摘要： 为了减轻机载电子系统线缆和连接器的重量，减小其体积并降低维护成本，在航空电子组件的电路板或芯片之间，可以采用太赫兹通信技术实现厘米量级的微距互连。采用开关键控（OOK）调制和非相干解调实现点到点太赫兹互连，给出了数据速率、数据包长度等参数的设计方法，进而构建包含用户节点和簇头节点的半双工多路访问分簇网络架构。在簇内用户节点到簇头节点的介质访问控制协议中采用赤字轮询（DRR）机制，并采用随机网络演算（SNC）方法得到概率保证意义下多路访问的有效服务容量，分析了阻塞干扰对DRR服务曲线的影响。分析和算例表明，DRR访问在保证实时性能界限的条件下兼顾了多路访问的灵活性，满足航空电子微小型化组件之间太赫兹通信和分簇组网的需求。

关键词: 航空电子, 介质访问控制, 轮询, 太赫兹通信, 有效容量

Abstract: To reduce size, weight and maintenance costs of wires, cables and connectors in airborne electronic systems, Terahertz (THz) communication technologies can be adopted to realize very-short range interconnections in a magnitude of centimeter between circuit boards or off-chips within avionics components. Under the condition that THz node-to-node links can be implemented by the On-Off Keying (OOK) modulation and non-coherent demodulation, design methods for parameters such as data rate and packet length were proposed to help form clustered network architecture with half duplex multiple access between a head node and user nodes. Within a cluster, the DRR mechanism was adopted as the Media Access Control (MAC) scheme from user nodes to the head node. Based on the Stochastic Network Calculus (SNC), the probabilistic guaranteed effective capacity for multi-accessing nodes was deduced to analyze the effect of jamming interference from the physical layer on the DRR service curve. Analysis and computation results show that the DRR scheduling can achieve flexible multiplexing with real-time performance guaranteed, therefore meeting the application requirements in THz multi-accessing communications and clustered networking among small or micro avionics components.

Key words: avionics, Media Access Control (MAC), round-robin, Terahertz communications, effective capacity

中图分类号:

李峭, 李佳, 熊华钢, 杨劲赫. 航空电子微距太赫兹互连DRR访问容量分析[J]. 航空学报, 2021, 42(6): 624082-624082.

LI Qiao, LI Jia, XIONG Huagang, YANG Jinhe. Accessing capacity of Deficit Round-Robin (DRR) in avionics very-short range THz interconnections[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(6): 624082-624082.

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航空电子微距太赫兹互连DRR访问容量分析

Accessing capacity of Deficit Round-Robin (DRR) in avionics very-short range THz interconnections

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