基于WebRTC的网络加速服务关键技术研究与实现

发布时间：2018-04-25 04:22

本文选题：WebRTC + 网络加速　；参考：《华南理工大学》2015年硕士论文

【摘要】：随着移动互联网的发展,终端数量爆发性增长。3G、4G网络技术的普及和公共WIFI的大范围覆盖,使得人们对于互联网服务的依赖越来越严重。人们对于纯文本的需求转变为对包含信息更丰富的图片、视频的需求。终端连接数的增加以及对多媒体文件请求的不断增加,使得服务端的带宽和处理能力都出现了瓶颈,为了应对这种情况,网络加速技术显得尤为重要。网络加速技术并不是一项新技术,它包括物理上的加速和逻辑上的加速。现有技术的发展和新技术的涌现,为逻辑加速提供了很多新的思路。本文阐述了网络加速服务的概念、背景和研究现状,分析了网络加速服务主要面临的问题及相关技术难点,提出了网络加速服务的体系结构。在此基础上融合了现有的CDN加速技术和P2P加速技术,给出了基于WebRTC的网络加速服务的解决方案。此方案是对现有技术的巧妙结合,也具有概念上的创新。本文提出的解决方案重点解决了两个问题:流媒体的加速和CDN的改进。针对终端的多样性和WebRTC技术的自身缺陷,使用HLS协议实现流媒体播放,并通过P2P技术为流媒体加速;通过为客户端增加功能、完善信令服务、改进信令服务器,提出了与传统概念不同的P2P CDN,即由客户端充当CDN节点提供资源下载服务。本文基于WebRTC的网络加速服务的模型实现了基本的功能,验证了网络加速服务中关键技术的可行性,同时也展现了网络加速服务面临的新挑战。
[Abstract]:With the development of mobile Internet, the popularity of 4G network technology and the wide coverage of public WIFI make people rely more and more on Internet service. The need for plain text translates into a need for more informative pictures and videos. With the increase of the number of terminal connections and the continuous increase of requests for multimedia files, the bandwidth and processing capacity of the server have become bottleneck. In order to cope with this situation, network acceleration technology is particularly important. Network acceleration is not a new technology, it includes physical acceleration and logical acceleration. The development of existing technologies and the emergence of new technologies provide a lot of new ideas for logic acceleration. This paper describes the concept, background and research status of network accelerated service, analyzes the main problems and related technical difficulties faced by network acceleration service, and puts forward the architecture of network accelerated service. On this basis, the existing CDN acceleration technology and P2P acceleration technology are combined, and the solution of network acceleration service based on WebRTC is presented. This scheme is a clever combination of the existing technology, but also a conceptual innovation. The solution proposed in this paper mainly solves two problems: the acceleration of streaming media and the improvement of CDN. Aiming at the diversity of the terminal and the defect of WebRTC technology, we use HLS protocol to realize streaming media play, and accelerate streaming media through P2P technology, improve signaling service and improve signaling server by adding function to client. A P2P CDN, which is different from the traditional concept, is proposed, that is, the client acts as the CDN node to provide the resource download service. In this paper, the model of network acceleration service based on WebRTC realizes the basic function, verifies the feasibility of the key technology in the network acceleration service, and at the same time shows the new challenge that the network acceleration service faces.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP393.09

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