| 基于跨层信道感知的SPMA 协议自适应阈值算法 |
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| 引用本文： | 杨志明,李金喜,张亦居.基于跨层信道感知的SPMA 协议自适应阈值算法[J].航空电子技术,2023(2):39-44. |
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| 作者姓名： | 杨志明 李金喜 张亦居 |
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| 作者单位： | 中国航空无线电电子研究所，上海 200241 |
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| 摘 要： | 基于统计优先级的多址接入协议（SPMA, Statistical Priority-based Multiple Access protocol）应用于机
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| 关 键 词： | 基于统计优先级的多址接入 跨层 信道感知 负载统计 自适应阈值 |
| 收稿时间： | 2022/8/30 0:00:00 |
| 修稿时间： | 2023/3/4 0:00:00 |
AdaptiveThreshold Algorithm Based on the Cross-Layer Channel
Awareness for SPMA Protocol |
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| YANG Zhi-ming,LI Jin-xi,ZHANG Yi-ju.AdaptiveThreshold Algorithm Based on the Cross-Layer Channel
Awareness for SPMA Protocol[J].Avionics Technology,2023(2):39-44. |
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| Authors: | YANG Zhi-ming LI Jin-xi ZHANG Yi-ju |
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| Affiliation: | China National Aeronautical Radio Electronics Research Institute, Shanghai 200241, China |
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| Abstract: | Statistical Priority-based Multiple Access protocol (SPMA) is applied to airborne weapon cooperative
control networks, which has the characteristics of low latency and high transmission success rate. The channel load
statistics and the threshold design of different priority services of SPMA are two of its key technical points. Aiming at
the problems of real-time load statistics and low channel utilization of SPMA protocol, an adaptive threshold algorithm
is proposedbased on the Cross-layer channel Awareness for SPMA protocol, establishinga statistical model of variable
channel load of window length across physical layers and link layers.This algorithmuses the threshold mathematical
expressions of different service access to reduce the collision probability, so as to improve the system throughput on the
basis of meeting QoS requirements for high-priority businesses. Simulation results show that the algorithm can accurately
reflect the current channel occupancy in real time, and ensure the success rate of high-priority data transmission
under the condition of meeting the requirements of high-priority service transmission capacity. |
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| Keywords: | statisticalpriority-based multiple access cross-layer channel awareness load statistics adaptive threshold |
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