WO2010060371A1

WO2010060371A1 - Method and system for realizing data broadcasting

Info

Publication number: WO2010060371A1
Application number: PCT/CN2009/075089
Authority: WO
Inventors: 韦福
Original assignee: 中兴通讯股份有限公司
Priority date: 2008-11-27
Filing date: 2009-11-23
Publication date: 2010-06-03
Also published as: CN101414887B; CN101414887A

Abstract

A method for realizing data broadcasting is provided in the present invention, which includes the steps of distributing service channels for a data service, and configuring the associated relation between a service identifier of the data service and multiplex sub-frames in a multiplex configuration table according to the distribution circumstances of the service channels, and encapsulating the multiplex configuration table into a control multiplex frame, wherein the service channels distributed for the data service is not fixed; setting the service type field of service information in Electronic Service Guide, namely ESG, data according to the type of the data service, and encapsulating the ESG data into service multiplex frames; encapsulating the data service into the associated multiplex sub-frames, and encapsulating the multiplex sub-frames into the service multiplex frames; transmitting the service multiplex frames and the control multiplex frame. A system for realizing data broadcasting is also provided in the present invention. The method and system of the present invention can configure service channels for transmitting the data service flexibly, and improve the transmission rate of the data service and utilization rate of channel resources.

Description

Data broadcasting implementation method and system

Technical field

The present invention relates to mobile communications, and in particular, to a data broadcast implementation method and system.

Background technique

In recent years, digital mobile multimedia broadcasting technologies and standards have developed rapidly, such as DVB-H (Digital Video Broadcast Handheld Receiver) in Europe, MediaFLO (Media Forward Link Only) in the United States, and China's CMMB (China Mobile Multimedia Broadcasting), etc., provides many end-users with services such as advertisements, weather forecasts, news, sports programs, variety shows, multimedia radio dramas, movies, etc., users can I like to choose a service program for mobile multimedia broadcasting.

The mobile multimedia broadcast technology transmits the multimedia broadcast service in a time division multiplexing manner, and the broadcast channel frame has a duration of 1 second, and is composed of 40 25 millisecond time slots, and one or more time slots can transmit data of one multiplex frame package. . Figure 1 shows the mobile multimedia broadcast multiplexing frame structure, including the multiplexed frame header, the multiplexed frame payload and the padding portion. The multiplexed frame header is the control and description of the multiplexed frame payload data, and the multiplexed frame payload carries control information or service data, and one service corresponds to one multiplexed subframe.

The mobile multimedia broadcast technology is transmitted by using the control information and the service data separately. When the time slot transmits the control channel, the corresponding multiplexing frame (MF_ID=0) encapsulates the control information (Note: MF-ID, Multiplex Frame Identifier, Multiplexed Frame) The identification) is called a control multiplexing frame. When the time slot transmits the data channel, the corresponding multiplexing frame (MF_ID≠0) encapsulates the service data, which is called a service multiplexing frame. For the service multiplexing frame, it is further divided into multiple multiplexing subframes, and each multiplexing subframe encapsulates a video segment, an audio segment, and a data segment. A data segment usually consists of a data segment header and several data units. A multiplex subframe is an entity carried by a service.

2 is a multiplexed frame payload structure when the multiplexed frame identifier is 0 (MF_ID=0) in the mobile multimedia broadcast. The multiplex frame is mainly used for carrying control information and is composed of a control information table. Control information table 2 (table identification number (ID) is 0x02) and control information table 4 (table ID 0x04) respectively indicate continuous The CMCT: Continual Service Multiplex Configuration Table and the Short Time Service Multiplex Configuration Table (SMCT), which have the same parameters except the table identification number. The control information table 6 (table ID 0x06) is an ESG (Electronic Service Guide) basic description table. The ESG basic description table is used to describe the allocation and update status information of the ESG data service.

3 is a multiplexed frame payload structure when the mobile multimedia broadcast multiplexing identifier is not 0 (MF_ID≠0), mainly composed of various multiplexed subframes, and the multiplexed subframe is composed of a multiplexed subframe header and audio. Segments, video segments, and data segments. The multiplex frame payload is mainly used for bearer services, and each multiplex subframe carries one service.

In mobile multimedia broadcasting, data broadcasting (for example, information, stocks, etc.) is implemented based on data transmission technology, and data transmission is mainly divided into streaming mode and file mode. The streaming mode means that the data service is presented in a continuous stream manner, usually with timing requirements, transmission with time label indication or synchronization requirements within the data stream, and low requirements for data integrity, for example, some stock information, audio and video, etc.; File mode means that data services are presented as discrete data files. Usually there are no timing requirements, no time stamps or synchronization requirements, and high data integrity requirements, such as images, web pages and plugins. The data broadcast data packets are typically encapsulated in the data segment of the multiplexed frame.

In the multimedia broadcast technology, the service ID (servicelD) of the data broadcast is fixed, that is, the time slot (or multiplex subframe) of the transmission data broadcast is fixed, for example, the service ID is 2000 for the stock, and the service ID is 2001. The information is transmitted, that is, the stock information is transmitted on the multiplex subframe corresponding to the service ID 2000, and the information is transmitted on the multiplex subframe corresponding to the service ID 2001. This type of transmission is not flexible and scalable. If the front end transmits data broadcasts on other traffic channels, the terminal may not be able to receive it. In addition, for a data broadcast with a relatively large amount of data, it is supported by a single traffic channel, and the terminal download is slow. However, if the data broadcast is to be carried together on another traffic channel, the terminal cannot receive the service ID because the service ID is fixed. Data broadcasting transmitted on other traffic channels. In order to improve the flexibility and scalability of the system, fully apply wireless resources, speed up file downloading and improve the quality of information services, it is necessary to provide a more complete data broadcasting implementation method and device.

Summary of the invention

The technical problem to be solved by the present invention is to provide a method and system for implementing data broadcasting, improve terminal receiving flexibility and scalability of a mobile multimedia broadcasting system, and improve data transmission speed and Utilization of channel resources.

In order to solve the above technical problem, the present invention provides a data broadcast implementation method, which includes: allocating a traffic channel for a data service, and configuring a service identifier and a multiplex subframe of the data service in the multiplexing configuration table according to the allocation of the traffic channel. The association relationship is encapsulated in the control multiplexing frame, where the service channel allocated for the data service is not fixed;

Setting the service type field of the service information in the ESG data according to the type of the data service, encapsulating the ESG data in the service multiplexing frame; encapsulating the data service in its associated multiplex subframe, and encapsulating the multiplex subframe In a service multiplexing frame;

Transmitting the service multiplexing frame and controlling the multiplexing frame.

Further, in the above method,

When the data service is a data stream, before the step of encapsulating the data service in an associated multiplex subframe, the method further includes: encapsulating the data stream into a data packet to be encapsulated in a service multiplexing frame. ;

When the data service is a data file, before the step of encapsulating the data service in the associated multiplex subframe, the method further includes: dividing the data file into data blocks, and then dividing the data into data pieces and packaging the data into pieces. a packet to be encapsulated in a service multiplexing frame;

Before the step of encapsulating the ESG data, the method further includes: dividing the ESG data into data pieces, and then dividing the data into data segments for encapsulation in a service multiplexing frame.

Further, in the above method, in the step of configuring the association between the service identifier of the data service and the multiplex subframe in the multiplex configuration table, the service identifier of the data service is associated with one or more multiplex subframes .

Further, in the above method, the method further includes:

Receiving, by the terminal, the control multiplexing frame, parsing the multiplexing configuration table, and acquiring the service identifier of the data service and the association relationship between the service identifier and the multiplexing subframe;

The terminal receives the service multiplex frame including the ESG data, parses the ESG data, further analyzes the service information, and obtains the service type corresponding to the service identifier according to the service information;

According to the association between the service identifier and the multiplex subframe, the receiving condition is set, and the data service is received. Further, in the above method, the control multiplexing frame includes an ESG basic description table, and after the step of the terminal receiving the control multiplexing frame, the method further includes:

The ESG basic description table is obtained, the service identifier of the ESG data is obtained, and the receiving condition is set to receive the service multiplexing frame including the ESG data.

Further, in the above method, the method further includes:

The terminal saves the multiplexing configuration table and the ESG data, and when receiving the data service, receives the data service according to the locally saved multiplexing configuration table and the ESG data, if the terminal according to the locally saved multiplexing configuration If the table and ESG data receive data service fails, the reuse configuration table and/or ESG data are re-received.

Further, in the above method, when the data service is a data file, if the data file exists locally in the terminal, before the step of receiving the data service, the method further includes: backing up the original data file,

After the step of receiving the data service, the method further includes: deleting the backed up data file if the data file is successfully received, or restoring the backed up data file.

The invention also provides a data broadcast implementation system, comprising a data server, an ESG server, a multiplexer and a transmitting device, wherein:

The data server is configured to encapsulate the data service into a data packet and send the data packet to the multiplexer. The ESG server is configured to: set a service type field of the service information in the ESG data according to the data service type, and send the ESG data to the multiplexer. ;

The multiplexer is configured to: allocate a traffic channel for the data service, configure an association relationship between the service identifier of the data service and the multiplex subframe according to the allocation of the traffic channel, and configure the multiplexing configuration table. Encapsulating in a control multiplexing frame; encapsulating the data packet of the data service in its associated multiplex subframe, and encapsulating the multiplex subframe in a service multiplexing frame, where the service allocated for the data service The channel is not fixed; the ESG data is encapsulated in a service multiplexing frame;

The transmitting device is configured to transmit the control multiplex frame and a service multiplex frame.

Further, in the above system, the multiplexer is further configured to associate a service identifier of the data service with one or more multiplex subframes.

Further, in the above system, the system further includes: a receiving device, configured to receive the control multiplexing frame and a service multiplexing frame; and a demultiplexing unit configured to: parse the control multiplexing frame to obtain a multiplexing configuration table; and parse the service multiplexing including the ESG data The frame is parsed to obtain the ESG data, and the service information is further parsed; the service multiplexing frame including the data service is parsed, and the data unit is obtained;

a data processing module, configured to: decapsulate the data unit obtained by the demultiplexing unit to obtain a data packet, and then decapsulate the data packet according to the service type of the data service, and obtain data of the data service, and send the data to the upper application module; as well as

An upper application module, configured to: receive data of a data service sent by the data processing module, and obtain, from the multiplexing configuration table, a service identifier of the data service, and an association relationship between the service identifier and the multiplex subframe; In the information, the service type corresponding to the service identifier is searched; and the receiving condition of the receiving device is set according to the service identifier of the data service and the association relationship of the multiplex subframe.

Further, in the above system,

The upper application module is further configured to: save the multiplexing configuration table and the ESG data, set a receiving condition of the receiving device according to the locally saved multiplexing configuration table and ESG data; and the receiving device is further configured to And re-receiving the control multiplexing frame and the service multiplexing frame including the ESG data when the upper layer application module fails to receive the data service according to the locally stored multiplexing configuration table and the receiving condition set by the ESG data;

The data processing module is further configured to: when the received data service is a data file, if the data file already exists locally in the terminal, backing up the existing original data file, and deleting the backup data file after successfully receiving the data file, Otherwise, the original data file of the backup is restored after the failure of receiving the data file.

In summary, the present invention uses a non-fixed one or more traffic channels to transmit data broadcasts in a mobile multimedia broadcast system, and the terminal looks up the multiplexing configuration table and the data broadcast corresponding to the ESG data reception, thereby making full use of the wireless channel resources and improving Terminal equipment data broadcast processing flexibility and scalability, improve data download speed and ensure the timeliness of data updates. BRIEF abstract

1 is a mobile multimedia broadcast multiplexing frame structure; 2 is a mobile multimedia broadcast multiplex frame payload structure (MF_ID=0);

Figure 3 is a mobile multimedia broadcast multiplex frame payload structure (MF - ID ≠ 0);

4 is a front end system diagram of non-fixed service ID data broadcast data transmission according to the present invention;

Figure 5 is a flow chart of data processing in the data server of the present invention;

6 is a block diagram showing the structure of a terminal for non-fixed service ID data broadcast data transmission according to the present invention;

FIG. 7 is a flowchart of non-fixed service ID data broadcast data transmission according to the present invention.

Preferred embodiment of the invention

The main idea of the present invention is to allocate a non-fixed traffic channel when a traffic channel is allocated for a data service, that is, to transmit a data service on one or more non-fixed traffic channels, the service ID of the data service is not fixed, and the service ID of the data service is The corresponding multiplex subframes are one or more. The method of the invention can flexibly configure channel resources and improve data transmission efficiency.

4 is a front-end system diagram of non-fixed service ID data broadcast data transmission, which mainly includes a data server, an ESG (Electronic Service Guide) server, a multiplexer, and a transmitting device, where:

A data server is used to encapsulate data services into data packets and send the data packets to the multiplexer. Wherein, if the data of the data service is a data file, the data file is first divided into data blocks, the data block is further divided into data pieces, and then encapsulated into data packets, for example, encapsulated into an Extensible Protocol Encapsulation (XPE) package. , or scalable protocol encapsulation - forward correction if the data of the data service is a data stream, directly encapsulated into a data packet;

The ESG server is configured to set a service class (ServiceClass) field of the service information in the ESG data according to the type of the data service, that is, a service type corresponding to the service identifier of the data service. For example, if the service ID 601 carries the data file of the data broadcast, in the service information, the service type (ServiceClass) corresponding to the service ID (ServicelD) 601 is set as a data file, for example, set to 4 for the data file; if the service ID 602 The data stream of the data broadcast is carried, and the service type corresponding to the service ID 602 is set to be a data stream, for example, set to 7 to represent the data stream, and then the ESG server divides the ESG data into data blocks, data sections, and sends give Multiplexer

a multiplexer, configured to allocate a service channel and a service identifier for the data service, and configure a relationship between the service identifier of the data service and the multiplex subframe in the multiplex configuration table according to the allocation of the traffic channel, and the data packet of the data service Encapsulating the data unit of the data segment included in the associated multiplex sub-frame, encapsulating the ESG data (data section) into the data unit of the data segment of the multiplex sub-frame corresponding to the ESG, and encapsulating the multiplex sub-frame in the service The multiplex frame is also configured to configure various control information tables, including a multiplexing configuration table and an ESG basic description table, and then encapsulate various control information tables into control multiplexing frames, where the traffic channel allocated for the data service is The non-fixed service channel, the service identifier of the data service is a non-fixed service identifier, and the multiplex subframe associated with the service identifier of the data service is one or more multiplex subframes, and the transmitting device is configured to send the control multiplex frame and The service multiplexes the frame to the terminal.

Figure 5 is a flow chart of data processing in the data server. If it is a data file, the data server divides the data file into data blocks, data slices, and then encapsulates them into data packets, for example, encapsulated into XPE/XPE-FEC packets; if it is a data stream, directly encapsulates the data packets into packets. Give the multiplexer.

6 is a block diagram of a terminal structure of a non-fixed service ID data broadcast data transmission according to the present invention, the terminal comprising a receiving device, a demultiplexing unit, a data processing module, and an upper application module (stock, information, etc.), wherein:

And a receiving device, configured to receive a wireless signal of the front end system, obtain a multiplexing frame, that is, receive a service multiplexing frame and a control multiplexing frame from the transmitting device. Specifically, the receiving device first receives the control multiplexing frame, and then receives the service multiplexing frame of the data service according to the receiving condition set by the upper layer application module, and the upper layer application module receives the receiving according to the locally saved multiplexing configuration table and the ESG data setting. In the condition, if the receiving device fails to receive the service multiplexing frame including the data service by using the receiving condition, the receiving device re-receives the control multiplexing frame and the service multiplexing frame including the ESG data;

a demultiplexing unit, configured to parse the control multiplex frame, that is, parsing the multiplex frame of MF_ID=0, to obtain a multiplexing configuration table; and also for parsing the service multiplexing frame including the ESG data, and parsing the service information; Parsing a service multiplexing frame containing a data service to obtain a data unit;

The upper application module is configured to receive data (data stream or data file) of the data service sent by the data processing module, and display the data ID and the service ID and the multiplexer of the data service from the multiplexing configuration table. The relationship of the frame; from the service information of the ESG data, find the service The "business type" field corresponding to the ID: If the field is 4, it indicates that the corresponding service is a data file; if the field is 7, it indicates that the corresponding service is a data stream; and is also used for the service ID and service ID according to the data service. The association relationship with the multiplex subframe, the reception condition of the receiving device is set, and the receiving device receives the service multiplex frame including the data service according to the reception condition. The upper application module may further store the multiplexing configuration table and the ESG data locally, and set the receiving condition of the receiving device according to the locally saved multiplexing configuration table and the ESG data when the data service is subsequently received;

a data processing module, configured to decapsulate the data unit obtained by the demultiplexing unit to obtain a data packet (XPE/XPE-FEC packet), and then decapsulate the data packet according to the service type of the data service, if it is a data stream, directly The data stream is decapsulated, and if it is a data file, the data piece and the data block are decapsulated in turn, and finally the data file is parsed, and the data stream or the data file is sent to the upper application module for display (stock, information).

The ESG data also includes a correspondence between the data service and the service identifier, for example, the record stock corresponding service identifier 601. If the terminal needs to receive the stock information, all the service identifiers are found in the reuse configuration table, and the service information is in the ESG. Inside, the service identifier corresponding to the data service (data stream or data file) is found, and it is determined whether the service identifier is in the multiplexing configuration table. If yes, the receiving condition is set, the data service is received, and the stock information is obtained. When setting the receiving conditions, it may also be necessary to obtain the timing, RS code rate, byte interleaving mode, modulation mode, and LDPC corresponding to the multiplex subframe from the multiplex configuration table.

Step 701: The data server encapsulates the data service into a data packet and sends the data packet to the multiplexer. When the data server encapsulates the data, if the data file is a data file, it is divided into a data block, a data piece, and then encapsulated into a data packet (XPE). /XPE-FEC package, etc.); if it is a data stream, it is directly encapsulated into a data packet;

The multiplexer allocates a traffic channel for the data service, and configures a relationship between the service identifier of the data service and the multiplexed subframe in the multiplex configuration table according to the traffic channel allocation situation; wherein the service channel allocated for the data service is a non-stationary service The service identifier of the data service is a non-fixed service identifier, and the multiplex subframe associated with the service identifier of the data service is one or more multiplex subframes;

The ESG server sets the service type field in the service information according to the data service type, for example, Set the service type field in the service information to 4 (data file) or 7 (data stream); also divide the ESG data into data blocks, data sections, and send them to the multiplexer;

Step 702: The multiplexer encapsulates the data packet and the ESG data in a service multiplexing frame, and encapsulates the control information table in the control multiplexing frame.

Specifically, the data packet of the data service is encapsulated into a data unit, the data unit is encapsulated into a data segment of a multiplex subframe of the data service association, and the ESG data (data section) is encapsulated into the data unit, and the data unit is encapsulated into the data unit. The data unit is encapsulated into a data segment of the multiplex subframe corresponding to the ESG data, and the multiplex subframe is encapsulated in the service multiplexing frame; the various control information tables are configured, including the multiplexing configuration table, and then the various control information tables are Encapsulated into a control multiplex frame;

In order to improve channel utilization and increase download speed, in the multiplexer, the configuration of the multiplexing configuration table may be determined according to the data traffic size of the data broadcast, and the service identifier of one data service and one or more multiplexing subframes may be used. Association, thereby placing a data service in its associated multiple multiplex subframes for transmission. For the terminal to receive flexibility and scalability, the service ID of the data service may be fixed or not fixed. The data service can be transmitted in the multiplex subframe corresponding to different service IDs, which increases the flexibility and scalability of the service channel allocation.

Step 703: Transmit a control multiplexing frame and a service multiplexing frame.

In order to improve the success rate of file downloading, if you use the broadcast mode, you can use the carousel mode (same data, repeat playback) to play data services.

Step 704: The receiving device of the terminal receives the wireless signal, first receives the control multiplex frame (ie, the multiplex frame of MF_ID=0), parses the control multiplex frame, obtains a multiplexing configuration table, and then receives the service multiplexing frame including the ESG data. , parsing the business information;

When receiving the service multiplexing frame including the ESG data, the receiving device may first download the ESG basic description table (encapsulated in the control multiplexing frame), parse the service ID corresponding to the ESG data, and reset the receiving condition according to the service ID, and receive the inclusion Service multiplexing frame for ESG data.

Step 705: The upper application module obtains the association between the service ID and the service ID of the various data services and the multiplex subframe from the multiplex configuration table, and then searches for the service type field corresponding to the service ID in the service information. : If the field is 4, it indicates that the corresponding service type is a data file; if the field is 7, it indicates that the corresponding service type is a data stream; according to the service ID of the data service and The relationship between the service identifier and the multiplex subframe, setting the receiving condition, and receiving the data service;

Further, in order to speed up the data broadcast downloading speed, the ESG data and the multiplexing configuration table may not be downloaded each time, and the ESG data and the multiplexing configuration table may be locally saved in the terminal, and when the data broadcasting is subsequently received, according to the locally saved multiplexing configuration. The service information included in the table and the ESG data, obtains the service ID corresponding to the data service, sets the receiving condition, and receives the data service. If the data service fails according to the locally saved multiplexing configuration table and the ESG data, the update multiplexing needs to be received again. Configure tables and/or ESG data.

Step 706: Receive a service multiplexing frame corresponding to the data service, parse the data unit, decapsulate the data unit to obtain a data packet (XPE/XPE-FEC packet), and then decapsulate the data packet according to the service type of the data service, if The data stream is directly decapsulated to obtain a data stream. If it is a data file, the data piece and the data block are decapsulated in turn, and finally the data file is parsed, and the data stream and the data file are sent to the upper application module display (stock, information).

Further, for the data file, if the data file exists locally in the terminal (can be judged by the file name), the original data file needs to be backed up, and if the data file is successfully received, the backed up data file is deleted, otherwise the backed up data file is restored.

According to the method of the present invention, since the service ID of the data broadcast is not fixed and the traffic channel is not fixed, the data broadcast can share the multiplex subframe with other services, if the data segment of the multiplex subframe of other services is empty (for example) The multiplexed subframe for transmitting audio and video data can be placed in the data segment to improve the utilization of channel resources.

In the data broadcast implementation method of the present invention, the data broadcast service ID can be changed at the system side as needed, and the corresponding timing can also be changed. However, the terminal software does not need to be updated, and the data broadcast can be received according to the information in the multiplexing configuration table and the ESG data.

The invention may, of course, be embodied in various other forms and modifications without departing from the spirit and scope of the invention.

Industrial applicability

According to the method of the present invention, since the service ID of the data broadcast is not fixed, the traffic channel is not fixed. The data broadcast can share the multiplex subframe with other services. If the data segment of the multiplex subframe of other services is empty (such as a multiplex subframe for transmitting audio and video data), the data broadcast can be placed in the data segment. , thereby improving the utilization of channel resources.

Claims

Claim

A data broadcast implementation method, comprising:

Allocating a service channel for the data service, configuring a relationship between the service identifier of the data service and the multiplexing subframe in the multiplexing configuration table according to the allocation of the traffic channel, and encapsulating the multiplexing configuration table in control multiplexing In the frame, the service channel allocated for the data service is not fixed, and the service identifier of the data service is not fixed;

Setting a service type field of the service information in the ESG data according to the type of the data service, encapsulating the ESG data in a service multiplexing frame, and encapsulating the data service in its associated multiplex subframe Encapsulating the multiplex subframe in the service multiplexing frame;

Transmitting the service multiplexing frame and the control multiplexing frame.

2. The method of claim 1 wherein

When the data service is a data stream, before the step of encapsulating the data service in its associated multiplex subframe, the method further includes: encapsulating the data stream into a data packet, to encapsulate the service complex In the frame;

When the data service is a data file, before the step of encapsulating the data service in its associated multiplex subframe, the method further includes: dividing the data file into data blocks, and then dividing the data into a data slice and then packaging the data Packets are encapsulated in the service multiplexing frame;

Before the step of encapsulating the ESG data, the method further includes: dividing the ESG data into pieces of data, and then dividing the data into data segments for encapsulation in the service multiplexing frame.

The method of claim 1, wherein in the step of configuring the association between the service identifier of the data service and the multiplex subframe in the multiplexing configuration table, the service identifier of the data service and one or more Multiple multiplex subframe associations.

4. The method of claim 1, the method further comprising:

The terminal receives the service multiplex frame including the ESG data, parses the ESG data, and further parses the service information, and obtains the service corresponding to the service identifier according to the service information. Type;

The receiving condition is set according to the association relationship between the service identifier and the multiplex subframe, and the data service is received.

5. The method according to claim 4, wherein the control multiplexing frame includes an ESG basic description table,

After the terminal receives the control multiplexing frame, the method further includes:

6. The method of claim 4, the method further comprising:

The terminal saves the multiplexing configuration table and the ESG data, and when receiving the data service, receives the data service according to the locally saved multiplexing configuration table and the ESG data, if the terminal is based on the locally saved If the multiplexing configuration table and the ESG data receiving data service fail, the multiplexing configuration table and/or the ESG data are re-received.

7. The method of claim 4, wherein

When the data service is a data file, if the data file exists locally in the terminal, before the step of receiving the data service, the method further includes: backing up the original data file,

8. A data broadcast implementation system comprising a data server, an ESG server, a multiplexer, and a transmitting device, wherein:

The data server is configured to encapsulate the data service into a data packet and send the data packet to the multiplexer; the ESG server is configured to set a service type field of the service information in the ESG data according to the data service type, and send the ESG data to the Multiplexer

The multiplexer is configured to: allocate a traffic channel for the data service, and configure, according to the allocation of the traffic channel, a relationship between a service identifier of a data service and a multiplex subframe in the multiplex configuration table, where The multiplexing configuration table is encapsulated in a control multiplexing frame; the data packet of the data service is encapsulated in its associated multiplexing subframe, and the multiplexing subframe is encapsulated in a service multiplexing frame, where The service channel of the data service is not fixed, and the service identifier of the data service is not fixed; and the ESG data is encapsulated in the service multiplexing frame;

The transmitting device is configured to transmit the control multiplex frame and the service multiplex frame.

9. The system of claim 8, wherein the multiplexer is further configured to associate a service identity of the data service with one or more multiplex subframes.

10. The system of claim 8 further comprising:

a receiving device, configured to receive the control multiplexing frame and the service multiplexing frame;

The demultiplexing unit is configured to: parse the control multiplexing frame to obtain a multiplexing configuration table; parse the service multiplexing frame including the ESG data, parse the ESG data, and further parse the service information; and parse the service including the data service Multiplexing frames to obtain data units;

The upper layer application module is configured to: receive data of the data service sent by the data processing module, and obtain, by using a multiplexing configuration table, a service identifier, a service identifier, and a multiplexing subframe of the data service. And the service type corresponding to the service identifier is obtained from the service information; and the receiving condition of the receiving device is set according to the service identifier of the data service and the association relationship of the multiplex subframe.

11. The system of claim 10, wherein

The upper application module is further configured to: save the multiplexing configuration table and the ESG data, set a receiving condition of the receiving device according to the locally saved multiplexing configuration table and ESG data; and the receiving device is further configured to And re-receiving the control multiplexing frame and the service multiplexing frame including the ESG data when the upper layer application module fails to receive the data service according to the locally saved storage configuration table and the receiving condition set by the ESG data;