面向GEO卫星网络的多速率多播拥塞控制机制  

Multi-Rate Multicast Congestion Control Mechanism for GEO Satellite Network

作　　者：田波[1] 蔡述庭[2] 

机构地区：[1]铜仁学院信息工程学院,贵州铜仁554300 [2]广东工业大学自动化学院,广东广州510090

出　　处：《电子学报》2016年第7期1599-1604,共6页Acta Electronica Sinica

基　　金：国家自然科学基金青年科学基金(No.61201392);铜仁学院博士科研启动基金(No.trxy DH1503)

摘　　要：针对GEO卫星网络带宽时延积较大、拥塞控制机制不完善的问题,提出了一种面向GEO卫星网络的多速率多播拥塞控制机制MMCCM_GEO.首先,在保证接收端请求速率最大化的前提下,将GEO卫星网络中的多速率多播问题转化为非线性优化问题,并采用改进的模拟退火算法对其求解,得到了最优的接收端请求速率.其次,通过采用代理节点实现反馈信息的汇集与丢失数据的恢复,有效地解决了反馈内暴及数据恢复问题.仿真结果表明,与目前GEO卫星网络中典型的多速率多播拥塞控制机制相比,本文的拥塞控制机制有效地提高了数据吞吐量和带宽利用率,降低了GEO卫星网络中的数据传输时延,同时也具备了更好的可扩展性.Due to the lower performance of congestion control mechanism and high production of bandwidth and de-lay,a multi-rate multicast congestion control mechanism for geosynchronous earth orbit （GEO）satellite network （MMCCM_GEO）was proposed.First,under the premise of maximizing the require rate of receivers,the multi-rate multicast conges-tion control problem for GEO satellite network was formulated as a nonlinear optimization problem,and the improved simu-lated annealing algorithm was employed to obtain globally optimal solution.Then,the issue with acknowledgement （ACK） implosion and loss data recovery was settled by proxy node.Simulation results reveal that the proposed mechanism obtains better throughput and bandwidth utilization,and achieves better scalability,compared with the typical conventional multi-rate multicast congestion control mechanism.

关 键 词：GEO卫星网络 多速率多播 拥塞控制 模拟退火算法 

分 类 号：TN927.21[电子电信—通信与信息系统]