3Tnet-based multistage-agency video-on-demand system and method

Abstract

The invention discloses a 3Tnet-based multistage-agency video-on-demand system. The system of the invention comprises a center server, a center proxy server, an access convergence router (ACR) service access router, an edge proxy server and a home gateway. The invention also discloses a 3Tnet-based multistage-agency video-on-demand method. Through the technical scheme of the invention, video-on-demand service can be realized in a 3Tnet network. Moreover, a multistage-agent strategy is adopted and the edge proxy server is arranged in a user community to respond to service requests of users, relieve data transmission pressure of a core network and improve service operating efficiency.

Description

Technical field [0001] The present invention relates to the technical field of 3Tnet video on demand, in particular to a 3Tnet-based multi-level proxy video on demand system and method. Background technique [0002] 3Tnet is the abbreviation of "High-Performance Broadband Information Network", which refers to T-bit routing, T-bit exchange and T-bit transmission, and is called China's next-generation “information highway”. Adopt the core network + edge network network framework, use the circuit-switched ASON-automatic switching optical network in the core network to support T-bit transmission; the edge network adopts the circuit and packet hybrid switching system. 3TNET has the functions of Tbps switching capacity, multi-type service access, dynamic resource allocation, automatic connection control and network protection restoration; the link layer has burst switching connection and multicast. The project aims to explore methods and approaches for a practical, manageable, and ope...

AI Technical Summary

Problems solved by technology

[0004] (1) The Internet performs intermittent asynchronous transmission based on packet transmission. Data is decomposed into many packets during the transmission process. Since the network is dynamically changing, the time delay to reach the client is also different, and streaming media is time sensitive. The requirements are very high, so this will seriously affect the quality of client media services;

[0005] (2) The growth of network bandwidth on the Internet cannot meet the needs of streaming media growth

Because the video data is huge and the cache space is limited, the proxy cache usually adopts a partial storage method, which greatly reduces the hit rate of on-demand. For the partially stored content, when the user requests uncached data, the central server needs to communicate with the The data transmission between proxy services will increase the load of the central server and proxy services at the same time.

[0007] During the research and practice of traditional video-on-demand methods and strategies, the inventors of the present invention found that the "high-performance broadband information network" 3Tnet proposed by my country can provide reliable QoS guarantees for video-on-demand services, and traditional proxy caching technology needs to solve The network bandwidth, network delay and other problems no longer exist, so the traditional proxy caching technology is not suitable for 3Tnet. This paper proposes a video-on-demand service system to provide the most possible solution to this problem

Images