面向立体化异构网络的智融协同传输方法

Smart Integrated Cooperative Transmission Method for Stereoscopic Heterogeneous Networks

为应对空天地立体化异构网络中由于节点异构性及连通变化带来的复杂挑战,提出了具备有界无环无阻策略更新能力的传输控制方法HWCTC.该方法以跨层协同控制的方式将网络路由算法引入传输控制框架;在此基础上将路由更新节点的选择问题建模为节点搜索问题,使网络传输中需考虑被调用的资源限定在有界范围内.在此基础上,设计了一种基于广度优先的启发式递增搜索算法,该算法能够有效进行全局和局部的路由配置更新,同时确保新路径无环路且无网络黑洞.此外,为适应空天地立体化异构网络环境的波动性,还设计了一种多模式混合的拥塞控制机制,该机制能在接近网络带宽阈值时切换到更平缓的增窗模式,及时调整策略以应对网络中可能出现的多种情况.仿真实验的结果表明,HWCTC方法在动态且高丢包率的空天地立体化异构网络环境下,不仅提供了高质量的数据传输服务,且相比于经典的Cubic和Reno方法,实现了约61.5%的吞吐量提升,显著增强了数据传输的稳定性,有效减少了节点路由动态变化对传输性能的影响.

To address the complex challenges posed by node heterogeneity and connectivity changes in integrated stereoscopic heterogeneous networks,we propose a transmission control method with bounded,loop-free,and blocking-free policy update capabilities.This method incorporates network routing algorithms into the transmission control framework through cross-layer cooperative control.The selection of routing update nodes is modeled as a node search problem,ensuring that the resources involved in network transmission are bounded.On this basis,a breadth-first heuristic incremental search algorithm is designed to efficiently update both global and local routing configurations,ensuring that new paths are loop-free and devoid of network black holes.Additionally,to adapt to the volatility of integrated stereoscopic heterogeneous networks,a multi-mode hybrid congestion control mechanism is designed.This mechanism can switch to a more gradual window-increase mode when approaching the network bandwidth threshold,promptly adjusting policies to handle various potential network conditions.Simulation results demonstrate that HWCTC method provides high-quality data transmission services in dynamic and high packet loss rate integrated space-air-ground heterogeneous network environments.Compared with the classical Cubic and Reno algorithms,HWCTC achieves approximately 61.5%improvement in throughput,significantly enhancing data transmission stability and effectively reducing the impact of dynamic node routing changes on transmission performance.