ID 原文 译文
57668 面向星座式低轨( LEO) 卫星网络，针对动态路由技术重构时间长导致的资源利用率下降问题，提出了一种基于预测的路径切换机制. For constellation low earth orbit ( LEO) satellite networks，aiming at the problem of resource utilization decline caused by long reconfiguration time of dynamic routing technology，a path switching mechanism based on prediction is proposed.
57669 依据卫星飞行轨迹，预测星间链路的可用时间，从而判断当前传输路径的可用寿命. According to the satellite flight trajectory，the duration of in- ter-satellite link is predicted，so the available lifetime of the current transmission path can be estimated.
57670 在当前路径断开之前及时触发路由重构，为当前传输寻找备用路径，避免路由重构导致传输中断. With the proposed routing strategy，the route reconfiguration is initiated in time before the current path is disconnected，therefore.
57671 提出了新型路径选择方案，根据当前路径代价和网络全局负载状态设计了综合代价函数，用于选择最优路径. The transmission interruption by changing to another newly established path can be avoided. Moreover，according to the current path cost and the global load state of the network，a path cost metric is designed to select an optimal path.
57672 仿真结果表明，所提出的路径切换技术可有效降低数据转发的丢包率，提升网络整体吞吐量 Simulations show that the proposed routing scheme can effectively reduce the packet loss rate of data forwarding and improve the overall throughput of the net- work.
57673 在通信网络发生故障时，为确保路径可靠性与网络负载均衡的统一，由于软件定义网络( SDN) 的通信网络体系在电力通信网中已具可行性，故结合 SDN 逻辑集中式架构下路由快速收敛的特点，构建了路径重构模型，并采用业务路由重构算法求解. The software defined networking ( SDN) enabled architecture is becoming an effective communication method for smart grids. To achieve load balancing and fast recovery in smart grids in case of failures，the services are firstly divided into different levels according to requirements of service latency，bandwidth and impact on the smart grid operation.
57674 首先依据业务紧急程度、端到端通信时延、带宽需求及对电网实际运行的影响程度等因素将业务分为不同的优先级; Then，a mathematical model is formulated for maximizing of the link availability with the constraints of service requirements and substation level difference.
57675 然后以链路可用度最大为目标，以业务时延、站点等级差等为约束建立模型，以流量标准差、业务恢复率为评价指标，并在 IEEE14 母线系统上进行测试验证. Thirdly，the service rerouting algorithm for load balancing ( SＲALB) is exploited to solve it.
57676 仿真结果表明，所提算法在保证业务性能的同时具有更低的流量标准差和站点等级差，能有效实现路径重构，并确保负载均衡. Finally，thisscheme is verified in IEEE14 system，and it is demonstrated that the proposed algorithm not only guarantees better performance for services but also has lower standard deviation and substation level differencethan the existing algorithms.
57677 基于虚拟拓扑算法的思想，提出了一种基于网络状态的低轨( LEO) 卫星动态路由协议. Based on the idea of virtual topology algorithm，a network state based dynamic routing protocol for low earth orbit ( LEO) satellites that combines static routing，and dynamic routing is proposed.