具有资源预留的自适应分层组播系统的实现方案

The Implimental Scheme of Adaptive Layered Multicast System with Resource Reservation

提出了一个具有资源预留机制的自适应分层组播系统的实现方案。在该方案中采用面向接收方的机制协商需要接收的最低码流层数与最高码流层数 ;在分层组播路由器中使用资源预留机制保证接收节点可获得所需的基本媒体质量 ,通过自适应过滤控制使在最高码流层数与最低码流层数之间的数据流能够动态适配网络的变化状态。仿真结果表明 ,该方案能够高效地解决组成员的异构性以及对网络动态变化自适应的问题。

An implimental scheme of adaptive layered multicast system with resource reservation is presented. It supports a receiver_oriented negotiation for the minimum number and the maximum number of media layers. Resource reservation in LMR will guarantee the basic Quality of the media at the receiver. The number of layers forwarded will be adjusted by the adaptive filtering function dynamically to meet the status of network. The simulation results show that this scheme can efficiently solve the problems of heterogeneous group members and the adaptation to the frequent change of network status.