一种高效动态LEO卫星网络流量调节路由算法  

An efficient routing algorithm based on load balancing for dynamic LEO satellite networks

作　　者：罗拥华[1] 邬家炜[1] 

机构地区：[1]华南师范大学计算机学院,广东广州510631

出　　处：《电子技术应用》2016年第5期104-108,112,共6页Application of Electronic Technique

摘　　要：针对考虑负载均衡的LEO卫星网络路由算法存在控制网络开销偏大、路由更新不及时以及流量调节机制分配不均等问题,提出了一种基于负载均衡的动态LEO卫星网络路由算法DRLB。根据卫星节点路径记录信息以及后向Agent读取策略设计新的路由机制,获得动态卫星拓扑结构;分析前向Agent的分组格式并删除冗余字段,达到减小网络开销目的;根据数据发送时间间隔构造前向Agent选址策略,提高路由更新效率,通过考虑卫星所处纬度流量分配不均问题,改进流量调节因子,获得更好的负载均衡效果。仿真结果表明,与SDRZ-MA算法相比,DRLB算法在减缓星地之间的控制开销、平均端到端时延等方面具有较好的优势。In order to solve the problems that dynamic routing algorithms based on load balance have the redundancy control packet field, routing is not updated timely and the flow regulating mechanism exists defect, a Dynamic Routing Algorithm based on Load Balance（ DRLB） is proposed in this thesis. The required information for updating routing is recorded by the satellite nodes,and then the backward agent reads the required information from the satellite nodes. Moreover, DRLB reduces the length of forward agent to reduce the control overhead of network and it also optimizes the selection of the destination node of forward agent to improve the efficiency of routing updates. Finally, DRLB optimizes the flow control mechanism to achieve better load balancing. Simulation results show that DRLB improves control overhead, the average end to end delay and so on.

关 键 词：负载均衡 卫星网络路由 流量调节 更新路由 调节因子 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]