WO2010034180A1

WO2010034180A1 - Method and system for emergency broadcasting transmission

Info

Publication number: WO2010034180A1
Application number: PCT/CN2009/000883
Authority: WO
Inventors: 韦福
Original assignee: 中兴通讯股份有限公司
Priority date: 2008-09-25
Filing date: 2009-08-05
Publication date: 2010-04-01
Also published as: CN101369855B; CN101369855A

Abstract

The present invention discloses a method and system for emergency broadcasting transmission. When the front end system encapsulates an emergency broadcasting message, the level information of the emergency broadcasting message is encapsulated in the frame headers of all multiplex frames or in the frame headers of all multiplex sub-frames contained in the broadcasting channel frame where the emergency broadcasting message lies. At terminal, the level information of the emergency broadcasting message can be obtained only by parsing the frame header of a multiplex frame or the frame header of a multiplex sub-frame. Whether the emergency broadcasting message should be received according to the level information is judged, thus corresponding processing is performed. The present invention provides an effective solution for the contradiction between terminal service processing and emergency broadcasting processing under the condition of limited information processing ability of TV receiving chip at present.

Description

Emergency broadcast transmission method and system

The present invention relates to the field of mobile communications, and in particular, to a method and system for transmitting an emergency broadcast.

Background technique

In recent years, digital mobile multimedia broadcasting technologies and standards have developed rapidly. Various standards provide mobile multimedia broadcast terminal users with many service contents, such as advertisements, weather forecasts, news, sports programs, variety shows, multimedia radio dramas, and movies. Choose a service program for mobile multimedia broadcasting according to your own preferences.

Emergency broadcasting is a way to use the broadcast communication system to notify the public of an emergency. Emergency broadcasts provide a rapid response to emergencies such as natural disasters, accident disasters, public health and social security that cause or can cause major casualties, property damage, ecological damage and serious social hazards that endanger public safety. Quick notification method. Emergency broadcast is an application module of mobile multimedia broadcast. It is implemented in the form of broadcast messages. After receiving the message, the terminal uses the corresponding display mode according to the level and type of emergency events. Among them, urgent broadcast messages include text, pictures, audio and video.

In mobile multimedia broadcast technology, emergency broadcast is implemented as follows: After its TV application function is activated, the terminal receives a signal, tunes into a multiplex frame, and then parses and determines an emergency broadcast indication field included in the multiplex frame header. Therefore, it is determined whether there is an emergency broadcast of the next broadcast channel frame, and if there is an emergency broadcast, the emergency broadcast table is started to be received, and then the emergency broadcast data segment is parsed, and further into an emergency broadcast message. Finally, the information is displayed according to the emergency broadcast level field in the emergency broadcast message. If it is level 1 or level 2, it is forcibly displayed; if it is level 3 or 4, the user is prompted whether to display, the user selects yes, and vice versa. .

The above method of receiving the emergency broadcast may have the following problem: the processing capability of the television receiving chip in the terminal is not strong, such as when only one timing can be processed in one second (one service), when a certain service is being played, an emergency broadcast is performed at this time. To send it, you need to suspend the current service of the terminal, receive the emergency broadcast table, parse out the emergency broadcast data segment, and assemble it into an emergency broadcast message to know the emergency broadcast level. Even if it is a TV receiver chip with strong processing power, it needs to be parsed. Out of the data segment and fight out tight An urgent broadcast message can be resolved to get an emergency broadcast level, which increases unnecessary steps and power consumption. To this end, the above problems need to be solved by an emergency broadcast implementation method and apparatus.

Summary of the invention

The technical problem to be solved by the present invention is to provide an emergency broadcast transmission method and system, which solves the contradiction between terminal service processing and emergency broadcast processing, and improves the efficiency of the mobile multimedia broadcast system.

In order to solve the above technical problem, the present invention provides a method for transmitting an emergency broadcast, wherein: the front end system encapsulates an emergency broadcast message into a payload of a multiplex frame with a multiplex frame identifier of 0, and the emergency broadcast message is The level information is encapsulated in all multiplex frame headers included in the broadcast channel frame in which the emergency broadcast message is located or in the header of all multiplexed subframes, and the encapsulated multiplex frame is transmitted.

Further, the above method may also have the following features:

The front-end system encapsulates the level information of the emergency broadcast message by using the following method:

The front end system defines a reserved field included in a frame header of all multiplex frame headers or all multiplex subframes in a broadcast channel frame as an emergency broadcast level field, and presets an emergency broadcast message level and the emergency Correspondence between assignments of broadcast level fields;

After completing editing and/or encoding of the received emergency broadcast message data, the front-end system extracts the level of the emergency broadcast message, and sets the assignment of the emergency broadcast level field according to the correspondence.

Further, the above method may also have the following features:

For a broadcast channel frame that does not encapsulate the emergency broadcast message, the emergency broadcast level field is assigned a value that represents an absence of an emergency broadcast message.

Further, the above method may also have the following features:

The front end system also defines one or more other fields included in the headers of all multiplexed frame headers or all multiplexed subframes in the broadcast channel frame as extension bits of the emergency broadcast level field.

Further, after the step of transmitting the encapsulated multiplex frame, the foregoing method further includes the following steps:

After receiving the multiplex frame, the terminal parses out the multiplex frame header or the multiplex frame includes The assignment of the emergency broadcast level field included in the multiplex sub-frame header, determining whether to display the corresponding emergency broadcast message according to the assignment, and if necessary, for the emergency in the broadcast channel frame or the next broadcast channel frame The broadcast message is received and displayed; if no display is required, the next multiplex frame is processed, or the user is asked whether to play the emergency broadcast message and perform corresponding processing according to the user's selection.

Further, the above method may also have the following features:

When the terminal determines, according to the assignment, whether the corresponding emergency broadcast message needs to be displayed, if the assignment represents that there is no emergency broadcast message, or the level of the emergency broadcast message represented by the assignment is lower than the configured level of the emergency broadcast message that should be displayed. , it is judged that the corresponding emergency broadcast message does not need to be displayed, otherwise, it is judged that the corresponding emergency broadcast message needs to be displayed.

In order to solve the above technical problem, the present invention further provides a system for emergency broadcast transmission, comprising a front end system and a terminal, wherein the front end system includes an emergency broadcast server, a multiplexer, a modulator, and a transmitting device connected in sequence, The terminal includes a TV application module and an emergency broadcast receiving processing module, wherein:

The emergency broadcast server is configured to acquire data of an emergency broadcast message and edit and/or encode the same, and then send the data to the multiplexer;

The multiplexer encapsulates the edited and/or encoded emergency broadcast message data into a payload of a multiplex frame with a multiplex frame identifier of 0, and encapsulates the level information of the emergency broadcast message in the emergency broadcast message. All of the multiplexed frame headers included in the broadcast channel frame or the headers of all multiplexed subframes.

The television application module is configured to activate the emergency broadcast reception processing module upon startup.

The emergency broadcast receiving processing module is configured to continuously receive the multiplex frame in an active state, and determine an emergency broadcast level included in the multiplexed frame header or the multiplexed subframe header included in the multiplexed frame And determining, according to the emergency broadcast level information, whether an emergency broadcast message needs to be received. Further, the above system may also have the following features:

The multiplexer is configured to define, as an emergency broadcast level field, a reserved field included in a header of all multiplexed frame headers or all multiplexed subframes in a broadcast channel frame, and preset an emergency broadcast message. Correspondence between the level and the assignment of the emergency broadcast level field;

After completing the editing and/or encoding of the received emergency broadcast message data, the multiplexer extracts the level of the emergency broadcast message, and sets the assignment of the emergency broadcast level field according to the correspondence.

Further, the above system may also have the following features:

The emergency broadcast receiving processing module further includes a receiving unit, a first analyzing unit, a determining unit, a human interface unit, a second analyzing unit connected to the receiving unit, and a second analyzing unit connected to the second analyzing unit. a display unit, wherein: the receiving unit is configured to continuously receive a multiplex frame in an activated state, and receive a multiplex frame according to the notification by the determining unit and the human interface unit, and send the multiplex frame to the second parsing unit; The first parsing unit is configured to acquire a multiplex frame from the receiving unit, and parse an assignment of an emergency broadcast level field included in a multiplexed frame header of the multiplex frame header or the multiplex frame header included in the multiplex frame And then sent to the judging unit;

The determining unit is configured to determine, according to the received value of the emergency broadcast level field, whether to display a corresponding emergency broadcast message, and if not, notify the receiving unit to receive the current broadcast channel frame or the next broadcast channel. Multiplexing the multiplex frame with the frame identifier 0 in the frame and sending it to the second parsing unit; if no display is required, obtaining the next multiplex frame from the receiving unit for determining, or notifying the human interface unit to ask whether the user plays Emergency broadcast message;

The human interface unit is configured to query the user whether to play an emergency broadcast message according to the notification of the determining unit, and notify the receiving unit to receive the current broadcast channel frame or the next broadcast channel frame if the user selects to play the emergency broadcast message. Separating a multiplex frame whose frame identifier is 0 and transmitting it to the second parsing unit;

The second analyzing unit is configured to parse the emergency broadcast message included in the multiplexed frame payload after receiving the multiplexed frame sent by the receiving unit, and send the emergency broadcast message to the display unit.

Further, the above system may also have the following features: The emergency broadcast receiving processing module further includes a storage unit connected to the determining unit: the storage unit is configured to store a level of an emergency broadcast message to be displayed, and an assignment of an emergency broadcast level field and a level of an emergency broadcast message. Corresponding relationship between the level and the corresponding relationship, determining that the assignment of the emergency broadcast level field is received, such as the level of the emergency broadcast message represented by the assignment being lower than the level of the emergency broadcast message that should be displayed, or the assignment If there is no emergency broadcast message, it is judged that the corresponding emergency broadcast message does not need to be displayed. Otherwise, it is judged that the corresponding emergency broadcast message needs to be displayed.

Further, the above system may also have the following features:

The multiplexer also defines one or more other fields included in a header of all multiplexed frame frames or all multiplexed subframes in a broadcast channel frame as extension bits of the emergency broadcast level field;

The first parsing unit further parses out the value of the field defined by the extension bit included in the multiplex frame header obtained by the receiving unit or the header of the multiplex subframe, and sends the value to the determining unit;

The determining unit further determines the level of the emergency broadcast by combining the assignment of the emergency broadcast level field with the assignment of the field defined as the extension bit.

In order to solve the above technical problem, the present invention also provides a method for receiving an emergency broadcast message, wherein:

After receiving the multiplex frame, the terminal parses the assignment of the emergency broadcast level field included in the multiplex frame header or the multiplex subframe header included in the multiplex frame, and determines whether the value is determined according to the assignment. The corresponding emergency broadcast message needs to be displayed. If it is displayed, the emergency broadcast message in the broadcast channel frame or the next broadcast channel frame is received and displayed; if no display is needed, the next multiplex frame is processed, or Ask the user whether to play an emergency broadcast message and perform corresponding processing according to the user's choice.

Further, the above method may also have the following features:

When the terminal determines, according to the assignment, whether the corresponding emergency broadcast message needs to be displayed, if the assignment represents that there is no emergency broadcast message, or the level of the emergency broadcast message represented by the assignment is lower than The level of the emergency broadcast message that should be displayed determines that the corresponding emergency broadcast message does not need to be displayed. Otherwise, it is determined that the corresponding emergency broadcast message needs to be displayed.

In order to solve the above technical problem, the present invention further provides a terminal, including a television application module and an emergency broadcast receiving processing module, wherein:

The television application module is configured to activate the emergency broadcast reception processing module at startup; the emergency broadcast reception processing module is configured to continuously receive a multiplexing frame in an active state, and determine the multiplex frame header or The assignment of the emergency broadcast level field included in the multiplex subframe header included in the multiplex frame determines whether an emergency broadcast message needs to be received according to the emergency broadcast level.

Further, the above terminal may also have the following features:

The emergency broadcast receiving processing module further includes a receiving unit, a first analyzing unit, a determining unit, a human interface unit, a second analyzing unit connected to the receiving unit, and a second analyzing unit connected to the second analyzing unit. a display unit, wherein: the receiving unit is configured to continuously receive the multiplex frame in an activated state, and receive the multiplex frame according to the notification by the determining unit and the human interface unit and send the multiplex frame to the second parsing unit.

The first parsing unit is configured to obtain a multiplex frame from the receiving unit, and parse an assignment of an emergency broadcast level field included in a multiplexed frame header of the multiplexed frame header or the multiplexed frame header included in the multiplexed frame And then sent to the judgment unit.

The determining unit is configured to determine, according to the received value of the emergency broadcast level field, whether to display a corresponding emergency broadcast message, and if not, notify the receiving unit to receive the current broadcast channel frame or the next broadcast channel. Multiplexing the multiplex frame with the frame identifier 0 in the frame and sending it to the second parsing unit; if no display is required, obtaining the next multiplex frame from the receiving unit for determining, or notifying the human interface unit to ask whether the user plays Emergency broadcast message.

The human interface unit is configured to query the user whether to play an emergency broadcast message according to the notification of the determining unit, and notify the receiving unit to receive the current broadcast channel frame or the next broadcast channel frame if the user selects to play the emergency broadcast message. The multiplexing frame with the frame identifier 0 is multiplexed and sent to the second parsing unit.

The second parsing unit is configured to, after receiving the multiplexing frame sent by the receiving unit, The emergency broadcast message included in the multiplexed frame payload is parsed and sent to the display unit.

Further, the above terminal may also have the following features:

The emergency broadcast receiving processing module further includes a storage unit connected to the determining unit: the storage unit is configured to store a level of an emergency broadcast message to be displayed, and an assignment of an emergency broadcast level field and a level of an emergency broadcast message. Corresponding relationship between the level and the corresponding relationship, determining that the assignment of the emergency broadcast level field is received, such as the level of the emergency broadcast message represented by the assignment being lower than the level of the emergency broadcast message that should be displayed, or the assignment If there is no emergency broadcast message, it is judged that the corresponding emergency broadcast message does not need to be displayed. Otherwise, it is judged that the corresponding emergency broadcast message needs to be displayed.

An emergency broadcast transmission method and system according to the present invention does not need to assemble and parse emergency broadcast data, and as long as the multiplexed frame header is parsed, an emergency broadcast level can be obtained, thereby performing corresponding processing, reducing unnecessary steps and functions. Consumption increases the efficiency of mobile multimedia systems. At the same time, for a terminal of a chip manufacturer that does not have a strong processing capability, it is not necessary to suspend the current service, and the emergency broadcast level can be known, thereby performing corresponding processing, and the contradiction between the terminal service processing and the emergency broadcast processing is better solved.

BRIEF abstract

FIG. 1 is a structural diagram of a front end system according to an embodiment of the present invention.

FIG. 2 is a structural diagram of a terminal according to an embodiment of the present invention.

FIG. 3 is a flowchart of a method for encapsulating an emergency broadcast message according to an embodiment of the present invention.

FIG. 4 is a structural diagram of a multiplexed frame header in the prior art.

FIG. 5 is a structural diagram of a multiplexed frame header according to an embodiment of the present invention.

6 is a schematic diagram of a multiplex frame payload structure with a multiplex frame identifier of 0.

FIG. 7 is a flowchart of a method for receiving an emergency broadcast message encapsulated by the method of FIG. 3 according to an embodiment of the present invention. Preferred embodiment of the invention

The present invention provides a method and system for transmitting an emergency broadcast. The basic idea is: when the front-end system encapsulates an emergency broadcast message, the level information of the emergency broadcast message is encapsulated in all the broadcast channel frames included in the emergency broadcast message. In the frame header of the multiplexed frame header or in the header of all the multiplexed subframes, the terminal can obtain the level information of the emergency broadcast message only by parsing the header of the multiplexed frame header or the multiplexed subframe, thereby performing corresponding deal with.

The present invention will be described in detail below with reference to the accompanying drawings.

In order to solve the above technical problem, the present invention provides an emergency broadcast transmission system, which includes a front end system as shown in FIG. 1 and a terminal as shown in FIG. 2. The front end system and the composition of the terminal are described in detail below. Features:

Referring to FIG. 1, the front end system includes emergency broadcast servers, multiplexers, modulators, and transmitting devices connected in sequence, where:

The emergency broadcast server is configured to acquire and edit and/or encode the data of the emergency broadcast message and then send it to the multiplexer.

The multiplexer encapsulates the edited and/or encoded emergency broadcast message data into a payload of a multiplex frame with a multiplex frame identifier of 0, and encapsulates the level information of the emergency broadcast message in the emergency broadcast message. It is located in the header of all multiplexed frames contained in the broadcast channel frame or in the header of all multiplexed subframes.

Specifically, the multiplexer defines a reserved field included in a frame header of all multiplex frames or all multiplex subframes in a broadcast channel frame as an emergency broadcast level field, and presets an emergency broadcast message level and location. Corresponding relationship between the assignment of the emergency broadcast level field; the multiplexer extracts the level of the emergency broadcast message after completing the editing and/or encoding of the received emergency broadcast message data. The correspondence sets the assignment of the emergency broadcast level field. For a broadcast channel frame that does not encapsulate the emergency broadcast message, the emergency broadcast level field is assigned a value that represents an absence of an emergency broadcast message.

The multiplexer may also define one or more other fields included in all multiplex frame headers or all multiplex subframe headers in the broadcast channel frame as an extension of the emergency broadcast level field. Bit, thereby further increasing the type of emergency broadcast message level that the assignment of the emergency broadcast level field can represent.

The modulator and transmitting device mainly modulates the encapsulated multiplexed frame onto the physical channel and transmits it to the air through the electromagnetic signal, so that the receiving terminal can receive it within its wireless coverage.

Referring to FIG. 2, the terminal includes a television application module and an emergency broadcast receiving processing module, wherein: the television application module is configured to activate the emergency broadcast receiving processing module at startup.

The emergency broadcast receiving processing module is configured to continuously receive a multiplexing frame in an active state, and determine an emergency broadcast level included in a multiplexed frame header included in the multiplexed frame header or in the multiplexed frame And determining, according to the emergency broadcast level information, whether an emergency broadcast message needs to be received.

Further, the emergency broadcast receiving processing module further includes a receiving unit, a first analyzing unit, a determining unit, a human interface unit, a second analyzing unit connected to the receiving unit, and the second analyzing unit connected in sequence a connected display unit, and a storage unit connected to the determining unit, wherein: the receiving unit is configured to continuously receive the multiplexing frame in an activated state, and notify the user according to the determining unit and the human interface unit A multiplex frame is received and sent to the second parsing unit.

The determining unit is configured to determine, according to the received value of the emergency broadcast level field, whether to display a corresponding emergency broadcast message, and if not, notify the receiving unit to receive the current broadcast channel frame or the next broadcast channel. Multiplexing the multiplex frame with the frame identifier 0 in the frame and sending it to the second parsing unit; if no display is required, obtaining the next multiplex frame from the receiving unit for determining, or notifying the human interface unit to ask whether the user plays Emergency broadcast message. Specifically, the determining unit determines, according to the level of the emergency broadcast message that should be displayed stored in the storage unit, and the corresponding relationship, determining that the value of the emergency broadcast level field is received, as represented by the assignment The level of the emergency broadcast message is lower than the level of the emergency broadcast message that should be displayed, or the value indicates that there is no emergency broadcast message, and it is determined that the corresponding emergency broadcast message does not need to be displayed. Otherwise, it is determined that the corresponding emergency broadcast message needs to be displayed. The human interface unit is configured to query the user whether to play an emergency broadcast message according to the notification of the determining unit, and notify the receiving unit to receive the current broadcast channel frame or the next broadcast channel frame if the user selects to play the emergency broadcast message. The multiplexing frame with the frame identifier 0 is multiplexed and sent to the second parsing unit. The second parsing unit is configured to parse the emergency broadcast message included in the multiplexed frame payload after receiving the multiplex frame sent by the receiving unit, and send the emergency broadcast message to the display unit.

The storage unit is arranged to store the level of the emergency broadcast message that should be displayed, and the correspondence between the assignment of the emergency broadcast level field and the level of the emergency broadcast message.

When the received multiplex frame header includes not only an emergency broadcast level field but also an extension bit of the field, the first parsing unit further includes a header of the multiplex frame acquired from the receiving unit. The assignment of the field defined as the extension bit is parsed and sent to the judging module, and the judging unit also combines the assignment of the emergency broadcast level field with the assignment of the field defined as the extension bit to determine The level of emergency broadcasts.

The process of using the front-end system shown in Figure 1 above to package the emergency broadcast message is described in detail below. As shown in Figure 3, the following steps are included:

Step S301: The front-end system edits and/or encodes the data of an emergency broadcast message after receiving the data of the emergency broadcast message;

Step S302: The front-end system encapsulates the emergency broadcast message data into a payload of a multiplex frame with a multiplex frame identifier of 0, and encapsulates the level information of the emergency broadcast message in all the broadcast channel frames included in the emergency broadcast message. Multiplexed frame headers;

The front-end system may encapsulate the emergency broadcast message level information by using the following method: As shown in FIG. 4, a reserved field is included in the frame header of all the multiplexed frames in the broadcast channel frame, and the reserved field is defined as an emergency broadcast level field. . After completing editing and/or encoding of the received emergency broadcast message data, the front-end system extracts the level of the emergency broadcast message according to the level and a preset level of the emergency broadcast message and the emergency broadcast level field. The correspondence between assignments sets the assignment of the emergency broadcast level field.

As shown in FIG. 5, the emergency broadcast level field is a 3-bit field, and there are 8 types of assignments (000, 001, 010, 011, 100, 101, 110, 111). At present, the level of emergency broadcasting is divided into 4 levels, of which level 1 represents special significance, level 2 represents major, level 3 represents larger, and level 4 represents general. Therefore, the front-end system can set the level of an emergency broadcast message and the emergency broadcast level field. The correspondence between the assignments is, for example, when the level of the emergency broadcast is 1, the assignment of the emergency broadcast level field may be 001; when the level of the emergency broadcast is 2, the assignment of the emergency broadcast level field may be corresponding. When the level of the emergency broadcast is 3, the value corresponding to the emergency broadcast level field may be 011; when the level of the emergency broadcast is 4, the value corresponding to the emergency broadcast level field may be 100. Of course, the correspondence can also be set according to other methods.

As shown in FIG. 6, the front-end system can encapsulate the emergency broadcast message in a table with a table identification number of 0x10 in a multiplex frame of a multiplex frame ID of the broadcast channel frame in which the broadcast channel frame is located. The method will not be described here.

Step S303: The front end system modulates the encapsulated multiplexed frame onto the physical channel and sends it out. If the front-end system does not encapsulate the emergency broadcast message in a broadcast channel frame, the assignment of the emergency broadcast level field in all the multiplexed frame headers in the broadcast channel frame may be set to an assignment indicating that there is no emergency broadcast message, such as 000.

The foregoing steps complete the processing of encapsulating the multiplexed frame by the front-end system, and define an emergency broadcast level field in the multiplex frame header, and assigning the field to indicate whether the emergency broadcast message and the included emergency broadcast message are included. level.

In another embodiment, the front-end system may also define a reserved field in all multiplex subframe headers in the broadcast channel frame as an emergency broadcast level field, when the emergency broadcast message is encapsulated, according to the foregoing embodiment. Method, the level of the emergency broadcast message is encapsulated into an emergency broadcast level field defined in all multiplex subframe headers in its corresponding broadcast channel frame.

In another embodiment, the front-end system may also define one or more other fields included in a multiplex frame or a header of the multiplex subframe as an extension bit of the emergency broadcast level field, by adding the emergency The number of bits in the broadcast level field further increases the type of emergency broadcast level that the emergency broadcast level field can represent.

When the terminal is in the active state, the emergency broadcast receiving function is also activated. At this time, the terminal continuously detects and receives the emergency broadcast message. Referring to FIG. 7, the following describes in detail the terminal shown in FIG. When the emergency broadcast receiving function is in an active state, the process of receiving and receiving each received multiplexed frame encapsulated by the foregoing method includes the following steps: Step S701: The terminal receives a multiplexing frame.

Step S702: The terminal parses the emergency broadcast level field included in the multiplex frame header; Step S703: Determine whether the assignment of the emergency broadcast level field is an assignment indicating that there is no emergency broadcast message, and if yes, determine that it is unnecessary Displaying an emergency broadcast message, ending; otherwise, proceeding to step S704;

Step S704: determining whether the level of the emergency broadcast message represented by the assignment of the emergency broadcast level field is lower than the level of the emergency broadcast message to be displayed, if not lower, proceeding to step S705; if not, proceeding to step S706 ;

The terminal may locally configure a level of an emergency broadcast message to be displayed. When determining that the level of an emergency broadcast message is greater than or equal to the level of the emergency broadcast message that should be displayed, it is determined that the emergency broadcast message needs to be forcibly displayed; When the level of an emergency broadcast message is less than the level of the emergency broadcast message that should be displayed, it is determined that the emergency broadcast message does not need to be forcibly displayed.

Step S705: Receive a multiplex frame with a multiplex frame identifier of 0 in the broadcast channel frame or the next broadcast channel frame, parse and display the emergency broadcast message included in the multiplex frame, and end;

Since the emergency broadcast message is continuously sent for a period of time, that is, the same emergency broadcast message is included in each broadcast channel frame in a period of time, if it is determined that a multiplex frame contains an emergency broadcast message, then the complex broadcast message The same emergency broadcast message is also included in the next broadcast channel frame of the broadcast channel frame in which the frame is located, and the terminal can obtain the emergency broadcast message by receiving and processing the multiplex frame of the multiplex frame identifier of 0 in the next broadcast channel frame. .

If the multiplex frame identifier of the currently received multiplex frame is 0, the multiplex frame includes an emergency broadcast message to be displayed, and the multiplex frame is parsed and processed to obtain an emergency broadcast message to be displayed. . Since the emergency broadcast message is included in a multiplex frame in which the multiplex frame identifier is 0 in a broadcast channel frame, if the multiplex frame identifier of the currently received multiplex frame is non-zero, due to the characteristics of the multiplex frame transmission, The terminal will not receive the multiplex frame containing the emergency broadcast message in the current broadcast channel frame, that is, the multiplex frame of the multiplex frame identifier of the current broadcast channel frame cannot be received, and the terminal can receive the emergency in the next broadcast channel frame. Broadcast the message and display it.

Step S706: The terminal asks the user whether to play the emergency broadcast message. If the user chooses to play the emergency broadcast message, it is determined that the emergency broadcast message needs to be displayed, and step S705 is performed; otherwise, it is determined that the emergency broadcast message does not need to be displayed, and the process ends. The terminal may pop up a prompt box on the user interface to ask the user whether to play an emergency broadcast message, and the user selects whether to display an emergency broadcast message by clicking a button on the prompt box.

Certainly, the terminal may also not notify the user when it is determined that the level of the emergency broadcast message represented by the assignment of the emergency broadcast level field is lower than the level of the configured emergency broadcast message to be displayed, that is, when it is determined that the emergency broadcast message is not required to be forcibly displayed. Inquiries, direct judgment does not require the display of an emergency broadcast message.

In another embodiment, when the reserved field in the front-end system definition multiplex subframe header shown in FIG. 1 is defined as an emergency broadcast level field, the terminal uses the parsing included in the received multiplex frame. The emergency broadcast level field included in the subframe is multiplexed, and the assignment of the field is determined.

In another embodiment, when the front end system shown in FIG. 1 defines one or more other fields included in a multiplex frame or a header of a multiplex subframe as an extension bit of the emergency broadcast level field, The terminal also needs to combine the assignment of the emergency broadcast level field and the assignment of the extension bit to determine the level of the emergency broadcast message.

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

Claims

Claim

1. An emergency broadcast transmission method, comprising:

The front-end system encapsulates the emergency broadcast message into the payload of the multiplex frame with the multiplex frame identifier, and encapsulates the level information of the emergency broadcast message in the frame of all the multiplex frames included in the broadcast channel frame where the emergency broadcast message is located. The header of all or all of the multiplexed subframes is transmitted and the encapsulated multiplexed frame is transmitted.

2. The method according to claim 1, wherein the front end system encapsulates the level information of the emergency broadcast message by using the following method:

The front end system defines a reserved field included in a frame header of all multiplexed frames in a broadcast channel frame or a header of all multiplexed subframes as an emergency broadcast level field, and presets an emergency broadcast message level and the Correspondence between assignments of emergency broadcast level fields;

The front end system extracts a level of the emergency broadcast message from data edited and/or encoded on the emergency broadcast message, and sets an assignment of the emergency broadcast level field according to the correspondence.

3. The method of claim 2, wherein

For a broadcast channel frame that does not encapsulate an emergency broadcast message, the front end system assigns the emergency broadcast level field a value that represents an absence of an emergency broadcast message.

4. The method of claim 2, wherein

The front end system also defines one or more other fields included in the header of all multiplexed frames or the headers of all multiplexed subframes in the broadcast channel frame as extension bits of the emergency broadcast level field.

5. The method of claim 2, wherein after the step of transmitting the encapsulated multiplex frame, the method further comprises:

After receiving the multiplex frame, the terminal parses the assignment of the emergency broadcast level field included in the multiplex frame header or the multiplex subframe header included in the multiplex frame; The corresponding emergency broadcast message needs to be displayed; if it is displayed, the emergency broadcast message in the broadcast channel frame or the next broadcast channel frame is received and displayed; if no display is needed, the next multiplex frame is processed, or Ask the user whether to play an emergency broadcast message and perform corresponding processing according to the user's choice.

6. The method of claim 5, wherein

A front-end system for emergency broadcast transmission, wherein the front-end system includes an emergency broadcast server, a multiplexer, a modulator, and a transmitting device, which are sequentially connected, wherein

The multiplexer encapsulates the edited and/or encoded emergency broadcast message data into a payload of a multiplex frame with a multiplex frame identifier of 0, and encapsulates the level information of the emergency broadcast message in the emergency broadcast message. The frame header of all multiplexed frames included in the broadcast channel frame or the frame header of all multiplexed subframes.

8. The front end system according to claim 7, wherein

The multiplexer is configured to define, as an emergency broadcast level field, a header of all multiplexed frames in a broadcast channel frame or a reserved field included in a header of all multiplexed subframes, and preset an emergency broadcast message level and Corresponding relationship between the assignment of the emergency broadcast level field;

After receiving the edited and/or encoded emergency broadcast message, the multiplexer extracts the level of the emergency broadcast message, and sets the assignment of the emergency broadcast level field according to the correspondence.

9. The front end system according to claim 8, wherein

For a broadcast channel frame that does not encapsulate an emergency broadcast message, the multiplexer assigns the emergency broadcast level field a value that represents an absence of an emergency broadcast message.

10. The front end system according to claim 9, wherein

The multiplexer also defines one or more other fields included in the header of all multiplexed frames in the broadcast channel frame or the header of all multiplexed subframes as extension bits of the emergency broadcast level field.

11. A method for receiving an emergency broadcast message, comprising:

After receiving the multiplex frame, the terminal parses out the multiplex frame header or the multiplex frame includes The assignment of the emergency broadcast level field contained in the multiplex subframe header;

Determining whether the corresponding emergency broadcast message needs to be displayed according to the assignment, if it is displayed, receiving and displaying the emergency broadcast message in the current broadcast channel frame or the next broadcast channel frame; if no display is required, continuing to the next reuse The frame is processed, or the user is asked whether to play an emergency broadcast message and perform corresponding processing according to the user's selection.

12. The method of claim 11 wherein

A terminal, comprising a broadcast application module and an emergency broadcast receiving processing module, wherein the broadcast application module is configured to activate the emergency broadcast receiving processing module at startup; the emergency broadcast receiving processing module is set to be in an active state And continuously receiving the multiplexed frame, and determining an assignment of the emergency broadcast level field included in the multiplexed frame header or the multiplexed subframe header included in the multiplexed frame, and determining whether the emergency broadcast level is determined according to the emergency broadcast level Need to receive emergency broadcast messages.

The terminal according to claim 13, wherein the emergency broadcast receiving processing module further comprises a receiving unit, a first analyzing unit, a determining unit, a human interface unit, and a second connected to the receiving unit, which are sequentially connected a parsing unit, and a display unit connected to the second parsing unit, wherein

The receiving unit is configured to continuously receive the multiplex frame in an active state, and receive the multiplex frame according to the notification by the determining unit and the human interface unit, and send the multiplex frame to the second parsing unit; The unit is configured to acquire a multiplex frame from the receiving unit, and parse an assignment of an emergency broadcast level field included in a multiplexed frame header of the multiplex frame header or the multiplex frame included in the multiplex frame, and then send the message to the Determining unit;

The determining unit is configured to determine, according to the received value of the emergency broadcast level field, whether to display a corresponding emergency broadcast message, and if not, notify the receiving unit to receive the current broadcast channel frame or the next broadcast channel. Multiplexing the multiplex frame with the frame identifier 0 in the frame and sending it to the second parsing unit; if no display is required, obtaining the next multiplex frame from the receiving unit for judging, or Notifying the human interface unit to ask the user whether to play an emergency broadcast message;

The terminal according to claim 14, wherein the emergency broadcast receiving processing module further comprises a storage unit connected to the determining unit:

The storage unit is configured to store a level of an emergency broadcast message to be displayed, and a correspondence between an assignment of an emergency broadcast level field and a level of an emergency broadcast message;

Level and the corresponding relationship, determining that the assignment of the emergency broadcast level field is received, such as the level of the emergency broadcast message represented by the assignment being lower than the level of the emergency broadcast message that should be displayed, or the assignment indicating that there is no emergency broadcast The message determines that the corresponding emergency broadcast message does not need to be displayed. Otherwise, it is determined that the corresponding emergency broadcast message needs to be displayed.