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Method and device for expanding services in mobile multimedia broadcast system

A technology for mobile multimedia and broadcasting systems, applied in the field of business expansion in mobile multimedia broadcasting systems

Inactive Publication Date: 2011-01-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there is no extension solution for basic business flows

Method used

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  • Method and device for expanding services in mobile multimedia broadcast system
  • Method and device for expanding services in mobile multimedia broadcast system
  • Method and device for expanding services in mobile multimedia broadcast system

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Embodiment Construction

[0028] The basic idea of ​​the present invention is: perform SVC or FEC processing on the basic service flow, generate the corresponding enhanced data flow, and encapsulate the basic service flow in the multiplexing frame according to the encapsulation method of the original broadcast system, and for the enhanced data flow , can be encapsulated into the multiplexing frame of the broadcasting system in the same encapsulation method as the basic service stream, or set up a special channel to carry the enhanced data through the special channel and send it to the receiving end. In order to enable the receiving end to better decode the enhanced data stream, auxiliary information is also provided. The auxiliary information records the relationship between the enhanced data stream and the basic service flow, and the position information of the basic service flow and the enhanced data stream in the corresponding bearer channel Wait. The invention improves the service quality of the ba...

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Abstract

The invention discloses a method for expanding services in a mobile multimedia broadcast system, which comprises: packaging a basic service flow in a multiplex frame; generating an enhanced data flow for the basic service flow; and transmitting the multiplex frame, which carries the basic service flow, and the enhanced data flow. The invention also discloses a device for expanding the services in the mobile multimedia broadcast system, which comprises: a first packaging unit used for packaging the basic service flow in the multiplex frame; a generation unit used for generating the enhanced data flow for the basic service flow; and a transmitting unit used for transmitting the transmitting the multiplex frame, which carries the basic service flow, and the enhanced data flow. The method and the device improve the service quality of the basic services in the broadcast system.

Description

technical field [0001] The invention relates to service extension technology, in particular to a service extension method and device in a mobile multimedia broadcasting system. Background technique [0002] In the China Mobile Multimedia Broadcasting (CMMB, China Mobile Multimedia Broadcasting) system, information such as audio, video, and electronic service guides are packaged and arranged through multiplexing to form multiplexed frames, which are transmitted through the mobile multimedia broadcasting channel. [0003] The industry standard CMMB channel modulation specification GY / T220.1 defines that CMMB adopts Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology for channel coding. figure 1 It is a schematic diagram of the composition structure of a CMMB channel frame, such as figure 1 As shown, a CMMB channel frame is divided into 40 time slots, each time slot is 25ms, and a multiplexing frame can occupy one or more ti...

Claims

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Application Information

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IPC IPC(8): H04N7/52H04L1/00
Inventor 包乐辉
Owner ZTE CORP