作　　者： ; ; ;

机构地区： 华南理工大学计算机科学与工程学院

出　　处： 《通信学报》 2013年第S2期184-190,共7页

摘　　要： 针对企业网络的情况,提出了一种企业级视频会议系统的服务质量保证机制。该机制根据视频会议的传输模式,将视频会议的保障转化成对一组具有时间尺度数据流的保障,通过对网络中优先级带宽的管理来为数据流提供预约带宽,在网络的边缘对每个优先级数据流进行认证、标记和整形,在网络核心使用区分服务保障视频流的优先转发,以实现预约带宽的合法使用。实验结果表明该机制能够在网络拥塞的情况下为媒体流提供所需的带宽,能有效地保证视频会议的服务质量。 The QoS problem under the controlled enterprise network environment was addressed, and a novel QoS management mechanism for video conference at the enterprise level was proposed. This novel mechanism analyses the conference organization mode and transferring mode, and transforms the guarantee of video conference to the guarantee of a flow group with temporal information. This mechanism provides the bandwidth reservation through the management of network priority bandwidth. It authenticates labels and shapes the data flow at the edge of the network, and uses DiffServ to priority forward the media flow in the core network, and therefore guarantees the reservation of bandwidth for authorized users. Experimental results and analysis show that the proposed mechanism can provide the necessary bandwidth for the media flow when network congestion happens, and then can efficiently and effectively guarantee QoS for enterprise video conference.

关 键 词： 企业级 视频会议 接纳控制

领　　域： [电子电信] [电子电信] [自动化与计算机技术] [自动化与计算机技术]