IMS 重叠网络多路径传输内容分发机制

基于IMS的流媒体业务通常以集中方式为终端客户提供直播、点播等内容服务.然而集中式的服务模式并不能充分利用资源,还会因为流量过于集中而拒绝为更多终端提供服务,甚至会因为媒体服务器的失效而影响业务.提出了一种基于IMS重叠网络支持多路径传输的内容分发机制,在传统IMS网络中通过引入重叠网络实现资源的共享与分发,提高了网络资源利用率、降低了中心媒体服务器负载.实验表明与传统媒体服务器为中心的内容分发机制相比基于IMS重叠网络的内容分发机制具有显著优势.

Content Delivery Mechanism for Multipath Transformation on IMS-based Overlay Network

IMS-based streaming media service always provides live or on-demand content services for customers. However, the centralized service model does not utilize resources fully but leads to concentrated data flow, which will refuse to provide services for more terminals or even affect the service availability for the failure of the media server. In this paper, an IMS-based overlay network content distribution mechanism to support multipath transmission is proposed. Through the introduction of the overlay network on IMS resource sharing and distribution can be achieved. It also improves the network resource utilization, reduces the load of the central media server. The experiments show that IMS-based overlay network content distribution mechanism has a significant advantage compared with the traditional media server content distribution mechanism.