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Data restoring method of data broadcasting business, terminal and server

A technology of data broadcasting and data repair, applied in the field of data communication, can solve problems such as data repair that cannot be streamed

Active Publication Date: 2014-11-05
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing mobile multimedia broadcasting services, FLUTE / ALC technology can only repair data for file transmission, but not for streaming services

Method used

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  • Data restoring method of data broadcasting business, terminal and server
  • Data restoring method of data broadcasting business, terminal and server
  • Data restoring method of data broadcasting business, terminal and server

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] On the one hand, as shown in FIG. 1(a), this embodiment provides a data repair method for a data broadcast service, which may include:

[0043] 101. Receive service data of a data broadcast service sent by a network side.

[0044] 102. Analyze the service data, and if there is an error unit in the service data, obtain error location information of the erroneous service data, and cache the erroneous service data.

[0045] Wherein, the error location information is used to indicate the location of the error unit in the business data, specifically, the error location information may include the unique identifier of the error business data and at least one error unit in the error Location information in business data. For example, the service data of the data broadcasting service may be a Multiplex Frame Structure (Multiplex Frame Structure, MFS) frame of the data broadcasting service, and the error location information may include the unique identifier of the erroneous MFS ...

Embodiment 2

[0061] This embodiment provides a data repair method for a data broadcast service, and specifically uses a data repair method for a data broadcast service based on a multiplex frame structure (Multiplex Frame Structure, MFS) frame as an example for detailed description. It should be noted that the data of the data broadcasting service is not limited to be transmitted in the form of an MFS frame structure, and the MFS is taken as a special case for detailed description here.

[0062] In order to facilitate those skilled in the art to better understand the technical solutions provided by the embodiments of the present invention, the broadcast channel frame and the MFS frame constituting the broadcast channel frame are now described in detail. Such as figure 2 As shown, the broadcast channel of China Mobile Multimedia Broadcasting (CMMB) service adopts fixed-length time slots, and a broadcast channel frame takes up 1 second, which can be divided into 40 fixed-length time slots, ...

Embodiment 3

[0104] Such as Figure 6 As shown, this embodiment provides a terminal, which may include:

[0105] The first receiving unit 61 is configured to receive the service data of the data broadcast service sent by the network side; its specific implementation method is the same as that of step 101 shown in FIG. 1 , and will not be repeated here.

[0106] The first execution unit 62 is configured to analyze the business data received by the first receiving unit, if there is an error unit in the business data, obtain the error location information of the wrong business data, and perform the error on the wrong business data cache. Its specific implementation is the same as that of step 102 shown in FIG. 1( a ), and will not be repeated here.

[0107] Wherein, the error location information is used to indicate the location of the error unit in the business data, specifically, the error location information may include the unique identifier of the error business data and at least one e...

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Abstract

The embodiment of the invention discloses a data restoring method of a data broadcasting business, a terminal and a server, which are used for realizing the restoration of flow data. The method comprises the following steps: receiving the business data of a data broadcasting business, which are transmitted by a network side; analyzing the business data; if mistaken units exist in the business data, obtaining the mistaken position information of the mistaken business data and also carrying out buffer memory on the mistaken business data; transmitting a restoring request to the network side, wherein the restoring request comprises the mistaken position information; receiving restoring data issued by the network side according to the restoring request; and restoring the mistaken units in the business data with the buffer memory according to at least one restoring unit and the restoring position information so as to form the correct business data of the data broadcasting business. The embodiment of the invention is suitable for restoring the data of a data broadcasting business in a China mobile multimedia broadcasting (CMMB) system.

Description

technical field [0001] The invention relates to the technical field of data communication, in particular to a data repair method, a terminal and a server of a data broadcast service. Background technique [0002] The CMMB (China Mobile Multimedia Broadcasting, China Mobile Multimedia Broadcasting) service uses a one-way broadcast method for data transmission. When the information is transmitted on the air channel with interference, although Reed-Solomon (Reed-Solomon, hereinafter referred to as RS) coding and Low Density Parity Check (Low Density Parity Check Code, hereinafter referred to as LDPC) are used on the channel Technologies such as encoding and interleaving, and forward error correction (Forward Error Correction, hereinafter abbreviated as FEC) are used for error correction at the application layer, but bit errors still inevitably occur. For services such as stock information and software downloads, there are stricter requirements on the correctness of data. Usual...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
Inventor 樊艳梅
Owner HUAWEI DEVICE CO LTD