支持下载业务的移动多媒体广播业务方案分析

Research of mobile multimedia broadcasting service supporting download services

分析了实现移动多媒体广播的几种方案,并提出一种基于混合网络、同时支持下载业务的移动多媒体广播业务实现方案.本方案通过移动网络实现业务管理,采用分层密钥管理体系提高系统安全性,同时引入DRM(digital right management)模块,支持节目片段下载的业务.该方案对于实现移动多媒体广播业务的运营管理以及与下载业务的融合有着重要的意义和应用价值.

With the development of multimedia broadcasting applications, both mobile network and broadcasting network may offer the related services. However, there are some problems to be solved. Firstly, mobile networks face limited bandwidth in carrying the broadcasting services. Secondly~ the broadcasting networks lack interactive management. Thus, hybrid networks play an important role in offering the multimedia broadcasting services. In this paper, We propose an enhanced broadcasting services architecture, which is based on hybrid networks. In the proposed solution, the DRM （digital right management） enabler is added. This enabler gives the support for downloading the segments of the broadcasting data. The details of the each module are described to show the benefits of the proposed solution.