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大规模互联网服务的低时延传输技术
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作者 吕格瑞 赵员康 +3 位作者 张佳兴 潘恒 武庆华 李振宇 《计算机研究与发展》 北大核心 2025年第10期2398-2412,共15页
互联网是现代社会最重要的基础设施之一,其传输性能直接决定了其承载业务的能力和价值.随着移动互联网和交互式应用的快速发展,大规模互联网低时延传输面临应用层、传输层和网络层3方面技术难题,即应用数据动态发送决策与网络可用资源... 互联网是现代社会最重要的基础设施之一,其传输性能直接决定了其承载业务的能力和价值.随着移动互联网和交互式应用的快速发展,大规模互联网低时延传输面临应用层、传输层和网络层3方面技术难题,即应用数据动态发送决策与网络可用资源不匹配的难题、网络传输决策与网络状态变化不协同的难题、差异化业务与网络设备处理逻辑不一致的难题.针对传统分层、单点传输优化技术的瓶颈,提出并构建了面向大规模互联网服务的协同传输技术体系.介绍该体系中的应用智能传输决策、多维度协同传输、定制化网络内传输加速3方面技术成果,包括重要洞见、基本思路与原理、大规模部署结果等.最后,展望了互联网传输技术的下一步发展趋势. 展开更多
关键词 输控制协议 低时延 内容分发网络 传算协同 软件定义网络
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Three-dimensional multi-constraint route planning of unmanned aerial vehicle low-altitude penetration based on coevolutionary multi-agent genetic algorithm 被引量:8
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作者 彭志红 吴金平 陈杰 《Journal of Central South University》 SCIE EI CAS 2011年第5期1502-1508,共7页
To address the issue of premature convergence and slow convergence rate in three-dimensional (3D) route planning of unmanned aerial vehicle (UAV) low-altitude penetration,a novel route planning method was proposed.Fir... To address the issue of premature convergence and slow convergence rate in three-dimensional (3D) route planning of unmanned aerial vehicle (UAV) low-altitude penetration,a novel route planning method was proposed.First and foremost,a coevolutionary multi-agent genetic algorithm (CE-MAGA) was formed by introducing coevolutionary mechanism to multi-agent genetic algorithm (MAGA),an efficient global optimization algorithm.A dynamic route representation form was also adopted to improve the flight route accuracy.Moreover,an efficient constraint handling method was used to simplify the treatment of multi-constraint and reduce the time-cost of planning computation.Simulation and corresponding analysis show that the planning results of CE-MAGA have better performance on terrain following,terrain avoidance,threat avoidance (TF/TA2) and lower route costs than other existing algorithms.In addition,feasible flight routes can be acquired within 2 s,and the convergence rate of the whole evolutionary process is very fast. 展开更多
关键词 unmanned aerial vehicle (UAV) low-altitude penetration three-dimensional (3D) route planning coevolutionary multiagent genetic algorithm (CE-MAGA)
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