摘要
为了提高应用层多播的传输效率,提出一种基于区分服务的层次环状结构的应用层多播模型HRM,该模型构建了一个多层的覆盖网络,每层节点构成环状结构,取消了层中控制节点,减小了控制开销;并在数据传输过程中,根据应用层多播业务实时性不同,采用Push或Pull传输策略,减小传输时延或提高带宽利用率。仿真结果表明,该模型具有较小时延和控制开销以及较低的链路压力,适用于大规模应用层多播环境。
To improve the efficiency of application layer multicast （ALM）, an hierarchical-ring ALM model based on diff-services （HRM） was presented. In the model, the ring topology was employed to reduce the control overhead. In the data transmission process, the model used push/pull transmission strategy to reduce transmission delay and increase the bandwidth utilization. Simulation results show that the model provides lower end-to-end delay and link stress and control overhead, which is suitable to those larger scale different types ALM applications.
出处
《通信学报》
EI
CSCD
北大核心
2009年第10期128-134,共7页
Journal on Communications
