Method for implementing high speed multimedia broadcast technique of CDMA2000 system

Abstract

The invention relates to a method for providing real-time broadcast service in a CDMA2000 mobile communication network. The method comprises the following steps: setting a professional broadcasting network in the prior CDMA2000 network, the broadcasting network adopting special carrier frequency and OFDM modulation technique to support high-speed multimedia broadcast service; and transmitting identical information by transmitters using the same frequency in all cells in the broadcasting network to achieve single-frequency full-domain coverage without dividing position regions, wherein the mobile terminal can move in among all cells in the broadcasting network without switching cells when achieving the single-frequency full-domain coverage by using the special carrier frequency. The broadcasting system and the communication system coexist in the same frequency band, and can share a station, equipment and an indoor distribution system. A broadcast receiving module in the terminal and the original receiving module can coexist in the same frequency band and can share an antenna.

Description

technical field [0001] The invention relates to the technical field of digital multimedia wireless transmission, in particular to a method for providing real-time broadcasting services in a CDMA2000 mobile communication system. Background technique [0002] At present, the multimedia broadcasting service is becoming a hot spot in the world and a new growth point of the mobile communication industry. Watching multimedia broadcasting programs through mobile phones will become a new killer application in the "3G" era. How to provide high-quality audio and video services is a weakness of the 3G system. This is also an important factor restricting the development of the 3G system, and it is also one of the important reasons for the extensive development of 4G research and development in the world. [0003] At present, there are two main ways to provide multimedia broadcasting services on mobile terminals: [0004] A method based on mobile communication network such as MBMS techn...

AI Technical Summary

Problems solved by technology

[0011] When the broadcast network and the mobile communication network are independently networked, at least a 20MHz frequency guard band is required to resist interference between the two systems, resulting in a serious waste of frequency resources;

[0012] The independent networking of the two requires two sets of independent transmission networks, blind area supplementary point coverage facilities, and two sets of operation management platforms. This kind of redundant construction will inevitably lead to very expensive network deployment costs.

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