视频传输中的分组调度方法  

New packet scheduling scheme for video transportation

作　　者：姜宏岸[1] 王刚[2] 

机构地区：[1]淮海工学院计算机科学系,江苏连云港222005 [2]四川大学计算机学院,四川成都610065

出　　处：《计算机工程与设计》2008年第8期2026-2028,共3页Computer Engineering and Design

摘　　要：数据报丢失控制是在因特网中传输视频时的基本问题,缓冲区管理是防止视频数据报丢失的传统网络技术。为了解决视频通信中数据报丢失的问题,提出了一种新的分组调度方法,并建立视频通信系统环境,进行了编程实验。对运行在路由器内,能够保证视频传输过程中视频流内部和视频流之间数据报丢失要求的分组调度方法进行了仿真和分析。结果表明了该分组调度方法在控制数据报丢失和效率方面的优点。Packet loss control is an essential issue for video transportation over Intemet. Buffer management is a traditional network technique to protect video data against packet loss. A new innovative use of packet scheduling to meet the loss constraints of video communication is proposed. Followed by programming tests concerning establishment of systematic video communications, the packetscheduling scheme at a router is simulated and evaluated using real video data which assures that intra and inter-stream loss requests for video transportation are met. The results demonstrate the advantages ofthe proposed scheme, in termS ofloss performance and efficiency.

关 键 词：分组调度 服务质量 视频传输 多重优先级 运动图像专家组 

分 类 号：TP393.4[自动化与计算机技术—计算机应用技术]