By analyzing the current network technology system, development trend and development status of radio and television, the article clearly defined the opportunities and challenges of radio and television in the context of NGB and designed the NGB construction model of radio and television. Unidirectional broadcast service is the most basic business of radio and television NGB model currently the largest proportion of the basic type of digital TV set-top boxes, but are reserved for two-way function, you can add a cable modem via EPON or way into two-way set-top boxes, Two-way business is the most important part of the development of radio and television NGB model, change the traditional viewing habits are mainly two-way on-demand television, the real advantage of digital television is on-demand television, rather than just digital after adding a few units. Integration and exchange of radio and television broadcasting is the NGB's advanced goal of building a truly full-service cross-network integration and interoperability in order to better play the advantages of radio and television to bring better social and economic benefits.
