VDL 模式 2 系统媒介访问控制协议建模

中国民航大学学报 ›› 2026, Vol. 44 ›› Issue (1): 80-85.

VDL 模式 2 系统媒介访问控制协议建模

中国民航大学天津市智能信号与图像处理重点实验室，天津 300300

收稿日期:2024-12-20 修回日期:2025-04-24 出版日期:2026-02-28 发布日期:2026-03-07
作者简介:刘海涛（1966— ），男，河北省深州人，教授，博士，研究方向为航空通信系统.
基金资助:
民航协同空管技术及应用重点实验室开放基金资助项目（0151302）

Modeling the medium access control protocol of VDL Mode 2

Tianjin Key Laboratory of Intelligent Signal and Image Processing, CAUC, Tianjin 300300, China

Received:2024-12-20 Revised:2025-04-24 Online:2026-02-28 Published:2026-03-07

摘要/Abstract

摘要： 甚高频数据链(VDL,VHF data link)模式2系统是民用航空空中交通管理(ATM,air traffic management)系统的重要基础设施。未来ATM系统将采用基于四维航迹的空域运行(TBO,trajectory-based operations)模式，该模式对VDL模式2系统提出了更高的要求。为提升VDL模式2系统的性能，本文基于优化网络工程工具(OPNET,oplimized network engineering tools)构建了其媒介访问控制协议的仿真模型,该协议采用p-坚持载波侦听多路访问(p-CSMA,p-persistent carrier sense muliple access)机制。通过仿真实验，系统分析了坚持参数p对系统吞吐量、传输时延和丢帧率的影响规律。研究表明:坚持参数p对上述3项性能指标具有显著影响，且三者之间存在明显的权衡关系;通过合理选取p值，可在实现较高吞吐量的同时保持较低的传输时延和丢帧率，从而满足TB0运行对通信可靠性与实时性的要求

关键词: 航空数据链, VDL模式2系统, 媒介访问控制, 优化网络工程工具(OPNET)建模

Abstract: VHF Data Link (VDL) Mode 2 is a critical infrastructure of the civil aviation air traffic management (ATM) sys-tem. The future ATM system will adopt the trajectory -based operations (TBO) paradigm, which imposes morestringent requirements on VDL Mode 2. To enhance the performance of VDL Mode 2, this paper develops a simu-lation model of its medium access control (MAC) protocol using the optimized network engineering tools (OPNET).The protocol employs the p-persistent carrier sense multiple access (p-CSMA) mechanism. Through extensivesimulations, the influence of the persistence parameter p on system throughput, transmission delay, and frameloss rate is systematically analyzed. The results show that p has a significant impact on these three performancemetrics, and a clear trade -off exists among them. By appropriately selecting the value of p, it is possible toachieve high throughput while maintaining low transmission delay and frame loss rate, thereby satisfying the reli-ability and real-time communication requirements of TBO operations.

Key words: aeronautical data link, VDL Mode 2, medium access control, optimized network engineering tools (OPNET) modeling

中图分类号:

V355
TP391.9

刘海涛, 董沁卓, 戴永璋. VDL 模式 2 系统媒介访问控制协议建模[J]. 中国民航大学学报, 2026, 44(1): 80-85.

LIU Haitao, DONG Qinzhuo, DA I Y ongzhang. Modeling the medium access control protocol of VDL Mode 2[J]. Journal of Civil Aviation University of China, 2026, 44(1): 80-85.