工业园区中混合流媒体服务技术研究及应用

Study and Application of Hybrid Streaming Service Technology in Industrial Park

随着工业化进程的加快,工业园区在我国不断兴起。对园区而言,安全生产和园区职工的娱乐生活非常重要,结合了视频监控的混合流媒体服务是一种较好的解决方式。为提高工业园区网络中混合流媒体服务系统的性能,减少网络中的无用数据,避免网络风暴,本文对工业园区内流媒体服务需求和特性进行了分析,在传统的系统和网络架构上进行了改造,提出了一种解决方法。将视频直播和视频监控等用户被动接收的流采用IP组播传输的方式,而点播某用户可主动进行控制的流采用IP单播传输的方式。该方法在保证服务质量的前提下,提高了网络的承载容量,兼顾了高优先级的视频监控业务和低优先级的娱乐服务,为工业园区及用户提供了高品质的混合流媒体服务。本系统在实际环境中进行了验证,承载了30路标高清电视节目、48路高清视频监控及视频点播业务,视频服务流畅,网络负载均衡,符合设计预期。

In China, with the acceleration of industrialization, industrial parks become more and more popular. As an industrial park, safety production and staff＇ s entertainment are two of the most important things should be fixed. The hybrid streaming service combined with video surveillance is a good solution to solve it. In order to improve the network＇ s performance for streaming service, reduce useless data, and avoid network storm, the writers analyze the needs and characteristics of the hybrid streaming service, rebuild the net- work, and propose a solution. For video broadcast and video surveillance is user passive, it uses IP multicast transmission mode, oth- erwise for video on demand is user initiate, it uses IP unicat transmission mode. The method in the premise of guaranteeing the quality of service （QoS） , increases the carrying capacity of the network, finds the balance point in high priority video surveillance service and low priority entertainment service, and provides hybrid high - quality streaming service. The system is tested in the actual environment. There are 30 Standard Definition （SD）/High Definition （HD） video broadcast services, 48 video surveillance and meets the design expectations.