空海自组网随机接入仿真研究

Research on Random Access of Air-sea Ad-hoc Network

摘要:

针对无人机在远海远域协同任务过程中的空海信息协同共享需求，提出了一种基于优先级传输的动态随机接入协议。首先，通过设计高效集群组网信令保证集群测控通信自组网的遥测、遥控信息的稳定传输；然后，结合改进的TDMA（时分多址）组网时隙结构实现节点快速入网与动态时隙分配协议；最后，通过OPNET（网络仿真技术软件包）分析所设计的集群空海自组网系统的随机接入低时延、业务传输高吞吐量和端到端传输低时延性能。结果表明：该组网信令下建网时间只需要2~3个飞控周期，在32节点场景下节点完成随机Aloha入网时延平均不到0.6 s，改进的TDMA协议在端到端时延比传统TDMA协议降低1/3。

Abstract:

Addressing the air-sea information collaboration and sharing requirements for UAVs in distant maritime operations, a dynamic priority-based transmission protocol is proposed for random access. Firstly, this protocol is designed to ensure stable telemetry and remote control information transmission within the cluster measurement and control communication ad-hoc network through efficient cluster networking signaling. Secondly, combines an improved TDMA network time-slot structure for fast node enrollment and dynamic time slot allocation. Finally, an OPNET network simulation is used to analyze the random access, low latency, high throughput, and low end-to-end latency performance of the designed cluster air-sea self-organizing network system. The results indicate that the network establishment time under this signaling scheme requires only 2-3 flight control cycles. In a scenario with 32 nodes, the average delay for nodes to complete random Aloha network access is less than 0.6 seconds. Additionally, the improved TDMA protocol reduces end-to-end latency by 1/3 compared to traditional TDMA protocols.