| 摘要: |
| 战术通信是为保障战斗指挥和战斗行动而建立的通信，在其协议设计时要更多考虑时延和可靠性因素。考虑到时分多址（Time Division Multiple Access，TDMA）组网协议是战术通信系统使用最广泛的协议，采用排队论的方法研究了TDMA协议对报文传输时延的影响，并提出一种TDMA和码分多址混合组网方法，在不降低网络吞吐量的前提下，大幅缩短数据包排队传输时延，〖JP2〗尤其在负载较高的场景优势更加明显。通过仿真结果和解析结果的比较，所提方法的排队时延分析可近似为不均衡队列的排队问题，因此从理论上能够证明所提方法能够减少排队时间。不同参数下的仿真结果表明，所提方法在排队时延和网络吞吐量等网络性能上较原TDMA方案有明显提升，验证了其有效性。 |
| 关键词: 战术通信 媒体接入协议；TDMA；排队论 |
| DOI： |
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| 基金项目:中国电子科技集团公司数据链重点实验室开放基金（CLDL-20182305） |
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| A Tactical Communication Hybrid Access Methodology Based on Queuing Theory |
| GUO Zhe |
| (1.The 50th Research Institute of China Electronics Technology Group Corporation,Shanghai 200331,China;2.Data Link Key Laboratory of China Electronics Technology Group Corporation,Xi′an 710068,China) |
| Abstract: |
| As an important communication technology,tactical communication can guarantee the communication between combat command and combat operation.Time delay and reliability factors should be considered more when designing the resource allocation and service rules of tactical communication systems.The time division multiple access(TDMA） protocol is the most widely used protocol in tactical communication systems.This paper analyzes the impact of the TDMA protocol on message transmission delay based on queuing theory and proposes a hybrid TDMA and code division multiple access(CDMA） method which can shorten the transmission delay greatly,especially in scenarios with heavier service load.This method can shorten the queuing time theoretically,since the queuing delay analysis is approximately equal to the queuing problem of unbalanced queues by comparing the simulation results and analytical results.The effectiveness of the method is well-verified according to the simulation results under different parameters,the network performance such as queuing delay and network throughput is improved significantly compared with the original TDMA scheme. |
| Key words: tactical communication MAC protocol TDMA queuing theory |
