Method of terminal receiving strategy based on CMMB (China Mobile Multimedia Broadcasting) data broadcasting channel

A technology for data broadcasting and terminal reception. It is applied in broadcasting devices, broadcasting-related systems, broadcasting service distribution, etc. It can solve problems such as reducing broadcasting efficiency, and achieve the effects of reducing fault-tolerant algorithms, avoiding memory consumption, and improving receiving efficiency.

Inactive Publication Date: 2011-03-30
北京中传视讯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the current CMMB standard uses the file mode to broadcast, as the size of the data file increases, the broadcast efficiency will be significantly reduced, and it is difficult to meet the requirements of massive data and use limited CMMB channel resources to smoothly realize data downlink.

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  • Method of terminal receiving strategy based on CMMB (China Mobile Multimedia Broadcasting) data broadcasting channel

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Embodiment Construction

[0016] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] Before describing the present invention in detail, the following is an introduction to China Mobile Multimedia Broadcasting (CMMB for short) and China Mobile Multimedia Broadcasting Data Broadcasting, so as to better understand the present invention.

[0018] The CMMB system uses high-power S-band satellite signals to cover the whole country, uses ground supplementary transponders to forward satellite signals at the same frequency and content at the same time, supplements points to cover satellite signal blind areas, and uses wireless mobile communication networks to construct return channels to form one-way broadcast and A mobile multimedia broadcasting network combined with two-way interaction.

[0019] The data volume and transmission environment required for the mobile multimedia broadcasting system are different from those of ...

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Abstract

The invention discloses a method of terminal receiving by a CMMB (China Mobile Multimedia Broadcasting) data broadcasting file mode. The method comprises the following step of: capturing a received XPE / XPE-FEC data package into a file patch / FAT (File Allocation Table) patch. The method can identify whether the file patch is damaged, lost or inter-cut so as to reduce unnecessary fault tolerance, guarantee the timeliness of receiving priority of business files, buffer a complete data block in time, and reduce memory consumption and the occupation of CPU. The method enhances the terminal receiving efficiency of data broadcasting easily and effectively.

Description

technical field [0001] The invention relates to a method for realizing data file transmission in the field of mobile broadcast communication, in particular to a method and system for realizing data information terminal reception based on a data broadcast channel of CMMB (China Mobile Multimedia Broadcasting). Background technique [0002] Data broadcasting is a technical way to transmit text, image, audio, video and other multimedia information or data in other formats by means of point-to-face broadcasting through broadcast channels. Various information needs. CMMB's data broadcasting can provide various data services such as financial information, traffic navigation, electronic magazines, video downloads, and web broadcasting to serve the public. [0003] The CMMB data broadcasting specification GY / T220.5, the industry standard for radio, film and television, defines the data transmission and encapsulation methods for data broadcasting services in mobile multimedia broadc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W28/02H04H60/88
Inventor 杨鹏陆洋陈蔚力
Owner 北京中传视讯科技有限公司
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