The Design And Implementation Of MPE-based Broadcasting And Storing Experimental Platform

As the number of Internet users is drastically increasing,bandwidth is almost unchanged,which certainly leads to insufficient average bandwidth assigned for users. According to a deep analysis of the distribution of the contents spread in the network, it's not hard to find that 20%of the hot spot information,especially video download service,takes up 80%of network traffic.It is no doubt that repeatedly transmitting same contents in the network is a hug waste for limited bandwidth.Internet users demand for high bandwidth.This also brings high demand for transmission or data broadcast in push way.The successful application of high-power direct broadcast satellite television and the emergence of the Internet push technology have greatly stimulated the rapid development of satellite data broadcast.Using DVB (Digital Video Broadcast),which features high network bandwidth and broad coverage,to promote high-speed data broadcasting services may be an efficient way to help the Internet out of their predicament.Data broadcast continuously sends various digital information to a variety of terminal equipment,an effective way to provide information rapidly.For data broadcasting service,however,how to achieve effective control and regulation of contents and how to make users to custom contents conveniently and accurately is the problem that must be solved.The data classification identification technology provides a feasible option to address this issue. A typical example is UCL(Uniform Content Location) indexing techniquesThis paper begins with the data broadcasting technology in DVB network.First of all,it cites the advantages that the DVB data broadcasting service has to address the problem of inadequate Internet bandwidth.Then,through the analysis of its characteristics,it comes to the conclusion that the DVB data broadcasting service is practical only when it cooperates with the content marking and position technology. Finally,this article discusses in detail the Desktop Design and Implementation Process of a set of DVB-based data broadcasting experimental platform.On the basis of broadcast structure,the experimental platform refers to some principles of UCL data indexing technology on data classification to verify the possibility and engineering feasibility of solving two major problems,or insufficient bandwidth and hard content monitoring,through the integration of broadcasting network and the Internet.Through a lot of tests,I reach a conclusion that multi-thread broadcasting and storing of classified resources through DVB channels has incomparable advantages than multi-threaded Internet download in terms of speed and efficiency.However, given the limit on actual hardware environment,content marking and positioning is only achieved on the application layer.This only proves that in principle,the data broadcasting solution that marks and positions resources by content is technically feasible and effective.In the future application,using UCL Indexing technology to enable localization address structure on the IP layer and allow terminals to selectively receive resources based on hardware will greatly improve the data transmission rate while using broadcast and store structure in data broadcast applications.The stability and practicality of the entire system is also enhanced as well.