CN101369856B - Terminal and its method for implementing emergency broadcast - Google Patents
Terminal and its method for implementing emergency broadcast Download PDFInfo
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- CN101369856B CN101369856B CN 200810165945 CN200810165945A CN101369856B CN 101369856 B CN101369856 B CN 101369856B CN 200810165945 CN200810165945 CN 200810165945 CN 200810165945 A CN200810165945 A CN 200810165945A CN 101369856 B CN101369856 B CN 101369856B
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Abstract
The invention discloses a terminal and a method for implementing emergent broadcast relating to the mobile communication field. The terminal of the invention has a mobile TV function comprising a display module and a background emergent broadcast processing unit. The emergent broadcast processing unit includes a demultiplexing module and an emergent broadcast processing module, wherein the demultiplexing module is to judge whether an emergent broadcast is included in a received multiplexing frame when the mobile TV function is not started, when the emergent broadcast exists in the multiplexing frame, the demultiplexing module is used for analyzing the multiplexing frame and transmitting the analyzed emergent broadcast data segment to the emergent broadcast processing module; the emergent broadcast processing module is used for assembling the received emergent broadcast data segment and transmitting the assembled emergent broadcast to the display module. The emergent broadcast is timely received after the terminal is turned on. Moreover the invention also greatly reduces the unnecessary power consumption of the terminal.
Description
Technical field
The present invention relates to field of mobile communication, relate in particular to the method for a kind of terminal and realization urgent broadcast thereof.
Background technology
In recent years; Digital mobile multimedia broadcasting technology and standard evolution are rapid; Various standards provide many service content for the mobile multi-media broadcast terminal user; Programs such as for example advertisement, weather forecast, news, sports cast, variety, multimedia broadcasting play and film, the user can select the service programs of CMMB according to the hobby of oneself.
Urgent broadcast is a kind of mode from emergency to the public that utilize broadcast communication system to announce.When accidents such as generation natural calamity, accident disaster, public health and social safety; Cause or possibly cause great casualties, property loss, environmental destruction and serious social danger; When endangering public security, urgent broadcast provides a kind of mode of announcing efficiently rapidly.Urgent broadcast is an application module of CMMB, has adopted the form of broadcast to realize, after this message is received at the terminal, adopts corresponding exhibition method according to the rank and the type of emergency.Wherein, the message of urgent broadcast has literal, picture and audio frequency and video etc.
China mobile multi-media broadcasting technology adopts time division multiplexing mode to send MBMS service, and the duration of its broadcast channel frame is 1 second, is made up of 40 25 milliseconds of time slots, and one or more time slots can transmit the data of a multiplexed frame encapsulation.In the multiplexed frame structure of CMMB, multiplexed frame is divided into multiplex frame head, multiplexed frame payload and fills three parts, and is shown in Figure 1.China mobile multi-media broadcasting technology adopts control information and business datum separate mode to send, when time slot transmits control channel, and corresponding multiplexed frame encapsulation control information, as shown in Figure 2; And time slot is when transmitting data channel, corresponding multiplexed frame encapsulation business datum; For the service integration frame, be divided into a plurality of multiplexed sub frames again, each subframe encapsulate video section, audio section and data segment, as shown in Figure 3.
In the multimedia broadcasting technology; Urgent broadcast is achieved in that the terminal TV application module opens, and receives signal, resolves multiplex frame head then; Judge through the urgent broadcast indication field whether next broadcast channel frame has urgent broadcast; As shown in Figure 1, through multiplex frame head " urgent broadcast indication field " non-zero whether, just can judge whether emergency broadcast message;
If urgent broadcast is arranged; The terminal begins receiving control information table (being also referred to as the urgent broadcast table), mobile multimedia broadcasting multiplex frame payload structure (MF_ID==0) as shown in Figure 2, and wherein encapsulation is the control information table; When table was designated 0x10, what this gauge seal was adorned was emergency broadcast message;
Parse the urgent broadcast data segment then, mobile multimedia broadcasting multiplex frame payload structure (MF_ID ≠ 0) as shown in Figure 3, wherein encapsulation is business information; Constitute by multiplexed sub frame; And multiplexed sub frame the inside encapsulation is video-frequency band, and audio section and data segment further are combined into emergency broadcast message.
At last, declare according to the urgent broadcast rank of broadcast and to come display message: if 1 grade, 2 grades, then force to show; If 3,4 ranks are then pointed out the user, whether need to show that it is then to show that the user selects, otherwise does not show.
Above urgent broadcast realizes producing following problem; If the terminal TV application module is not opened, even issued urgent broadcast, the terminal also can't receiving emergent broadcast; Therefore; In order to make behind the starting up of terminal, constantly can receiving emergent broadcast, the method that need provide a kind of more perfect urgent broadcast to realize.
Summary of the invention
Technical problem to be solved by this invention is the method for a kind of terminal and realization urgent broadcast thereof to be provided, real-time receiving emergent broadcast behind the assurance starting up of terminal.
In order to address the above problem, the invention discloses a kind of terminal, have the mobile TV function; This terminal comprises display module, terminal TV application module; This terminal also comprises the backstage urgent broadcast processing unit that links to each other with said display module, also comprises the judging unit that all links to each other with said backstage urgent broadcast processing unit and said terminal TV application module, and said backstage urgent broadcast processing unit comprises demultiplexing module and the urgent broadcast processing module that connects successively; Wherein
Said judging unit after being used to receive multiplexed frame, judges whether the terminal TV application module starts, if, multiplexed frame is sent to the terminal TV application module handle, otherwise, this multiplexed frame is sent to said backstage urgent broadcast processing unit;
Said demultiplexing module; Be used for when mobile TV function not enabled, judging whether the multiplexed frame that receives has urgent broadcast; When in the multiplexed frame urgent broadcast being arranged, be used to resolve multiplexed frame, and the urgent broadcast data segment that parsing obtains is sent to said urgent broadcast processing module;
Said urgent broadcast processing module is used for the urgent broadcast data segment that assembly unit is received, and the emergency broadcast message that obtains after the assembly unit is sent to said display module.
Further, in the above-mentioned terminal, said demultiplexing module also is used for reading the urgent broadcast rank of multiplex frame head or multiplex sub frame head, and according to different urgent broadcast ranks, this multiplexed frame is carried out handled.
Wherein, when said urgent broadcast was superior to the setting rank, said demultiplexing module was resolved multiplexed frame, and the urgent broadcast data segment that will obtain after will resolving sends to said urgent broadcast processing module.
When the urgent broadcast rank is lower than the setting rank; Whether said demultiplexing module warning terminal user shows this urgent broadcast; If; Said demultiplexing module is resolved multiplexed frame and is obtained the urgent broadcast data segment, and this urgent broadcast data segment is sent to said urgent broadcast processing module, otherwise demultiplexing module does not process the multiplexed frame that receives.
Further, above-mentioned terminal periodically receives multiplexed frame according to the urgent broadcast duration, and wherein, the cycle time that receives multiplexed frame is less than the urgent broadcast duration.
The invention also discloses the method for a kind of terminal receiving emergent broadcast, comprising:
When the mobile TV function not enabled at said terminal; Said terminal receives multiplexed frame through backstage urgent broadcast processing unit; If in the multiplexed frame that receives urgent broadcast is arranged; Then said terminal to this multiplexed frame resolve obtain the urgent broadcast data segment after, this urgent broadcast data segment of assembly unit obtains emergency broadcast message, and is shown to the terminal use.
Further, in the said method, when in the multiplexed frame as if reception urgent broadcast being arranged, this method also reads urgent broadcast rank in multiplex frame head or the multiplex sub frame head, and according to different urgent broadcast ranks, multiplexed frame is handled accordingly.
Wherein, when said urgent broadcast is superior to the setting rank, said terminal parses multiplexed frame;
When said urgent broadcast rank is lower than when setting rank, whether said terminal notifying terminal use shows urgent broadcast, only when user command shows, and said terminal parses multiplexed frame.
In the said method, said terminal periodically receives multiplexed frame according to the urgent broadcast duration, and wherein, the cycle time that receives multiplexed frame is less than the urgent broadcast duration.
The invention also discloses a kind of method that realizes the urgent broadcast transmission, is in the process of multiplexed frame at encapsulation urgent broadcast data segment, and the urgent broadcast rank is encapsulated in multiplex frame head or the multiplex sub frame head, and said multiplexed frame is sent to the terminal;
After multiplexed frame is received at said terminal,, judge then whether urgent broadcast is arranged in this multiplexed frame, if read the urgent broadcast rank, and, the multiplexed frame of receiving is carried out handled according to different urgent broadcast ranks if judge terminal TV application module not enabled.
Further, in the said method, when urgent broadcast was superior to the setting rank, said terminal parses multiplexed frame obtained the urgent broadcast data segment, and this urgent broadcast data segment of assembly unit obtains emergency broadcast message, and is shown to the terminal use.
When the urgent broadcast rank is lower than the setting rank; Whether the first warning terminal user in said terminal shows this urgent broadcast; If, to resolve multiplexed frame and obtain the urgent broadcast data segment, this urgent broadcast data segment of assembly unit obtains emergency broadcast message; And be shown to the terminal use, otherwise said terminal does not process the multiplexed frame of receiving.
In the said method, said terminal periodically receives multiplexed frame according to the urgent broadcast duration, and wherein, the cycle time that receives multiplexed frame is less than the urgent broadcast duration.
In mobile many matchmakers broadcast system, adopt the complementary mode of backstage provided by the invention urgent broadcast processing unit and terminal TV application module, behind the assurance starting up of terminal, real-time receiving emergent broadcast.In addition, the present invention has also significantly reduced the unnecessary power consumption in terminal.
Description of drawings
Fig. 1 is the mobile multimedia broadcasting multiplex frame head structure;
Fig. 2 is a mobile multimedia broadcasting multiplex frame payload structure (MF_ID==0);
Fig. 3 is a mobile multimedia broadcasting multiplex frame payload structure (MF_ID ≠ 0);
The terminal structure sketch map of Fig. 4 for being provided in the present embodiment;
Fig. 5 is the flow chart of terminal receiving emergent broadcast shown in Figure 4;
Fig. 6 is a flow chart of realizing the urgent broadcast transmission in the present embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is done further detailed explanation.
A kind of terminal; On the basis of existing terminal TV application module, increased backstage urgent broadcast processing unit, and backstage urgent broadcast processing unit and terminal TV application module are mutual exclusions; Just after the terminal TV application module is opened at the terminal, just close backstage urgent broadcast processing unit; When withdrawing from the terminal TV application module, then open backstage urgent broadcast processing unit again.The structure at this terminal is as shown in Figure 4; Comprise tuner, judging unit, terminal TV application module, backstage urgent broadcast processing unit and display module; Wherein, Judging unit all links to each other with tuner, terminal TV application module and backstage urgent broadcast processing unit, and backstage urgent broadcast processing unit links to each other with display module respectively with the terminal TV application module.Below introduce in detail the function of each component part of terminal down.
Tuner is used for the multiplexed frame that receives is carried out tuning, and the multiplexed frame after tuning is sent to judging unit;
Judging unit: be used to judge whether the terminal TV application module starts, if, multiplexed frame is sent to the terminal TV application module handle, otherwise, this multiplexed frame is sent to the backstage urgent broadcast processing unit of running background;
The terminal TV application module: be used to resolve multiplexed frame, and the data that parsing is obtained, thereby realize the mobile TV function at terminal;
Backstage urgent broadcast processing unit: when in the multiplexed frame urgent broadcast being arranged, this unit is used for multiplexed frame is handled accordingly;
Above-mentioned backstage urgent broadcast processing unit further comprises demultiplexing module and urgent broadcast processing module, wherein:
Demultiplexing module; The urgent broadcast processing unit is received multiplexed frame when the backstage, and this demultiplexing module is at first judged whether non-zero of multiplex sub frame head " urgent broadcast indication " field fruit, if; Then expression has emergency broadcast message; Demultiplexing module begins the receiving control information table again, resolves multiplexed frame and obtains the urgent broadcast data segment, and the broadcast data section is sent to the urgent broadcast processing module;
In other embodiments; Behind the urgent broadcast, can also further read the urgent broadcast rank in multiplex frame head or the multiplex sub frame head in the demultiplexing module judgement multiplexed frame, and urgent broadcast rank and the emergency broadcast message rank of setting are in advance compared; If urgent broadcast is superior to the setting rank; Demultiplexing module is then resolved multiplexed frame, if the urgent broadcast rank is lower than the setting rank, demultiplexing module then points out the user whether need show emergency broadcast message; Only when user command showed emergency broadcast message, demultiplexing module was resolved multiplexed frame again; For example, when the urgent broadcast rank was 1 or 2 grade, demultiplexing module was resolved multiplexed frame, and when urgent broadcast was 3 or 4 grades, demultiplexing module then pointed out the user whether will show emergency broadcast message.
The urgent broadcast processing module obtains emergency broadcast message according to the urgent broadcast data segment assembly unit of receiving, and through display module emergency broadcast message is shown to the user.
In other embodiments, above-mentioned terminal is all right, according to the urgent broadcast duration, periodically opens and closes tuner, promptly periodically receives multiplexed frame, and wherein, the time interval that periodically opens or closes tuner is less than the urgent broadcast duration.
The process of above-mentioned terminal receiving emergent broadcast, as shown in Figure 5, may further comprise the steps:
Step 501: the terminal, open tuner;
In this step, according to the urgent broadcast duration, periodically open and close tuner, just periodically receive multiplexed frame, wherein, the time interval that periodically opens or closes tuner is less than the urgent broadcast duration.
Step 502: the electromagnetic wave signal that the tuner at terminal receives is tuned to multiplexed frame;
Step 503: judge whether the terminal TV application module is opened, if, then multiplexed frame is sent to the terminal TV application module and get into processing, process ends, otherwise get into step 504;
In this step, the terminal TV application module can be handled emergency broadcast message according to prior art.
Step 504: backstage urgent broadcast processing unit is resolved multiplex frame head and is obtained " urgent broadcast indication " field, has judged whether urgent broadcast according to this field then, if urgent broadcast is arranged, then gets into step 505, otherwise returns step 503;
Step 505: beginning receiving control information table, resolve multiplexed frame and obtain the urgent broadcast data segment, the assembly unit of broadcast data section section is obtained emergency broadcast message (literal, image or audio frequency and video), and be shown to the user.
In other embodiments, through step 504 judge urgent broadcast is arranged after, the urgent broadcast rank can be read further in the terminal from multiplex frame head or multiplex sub frame head; Be superior to the rank of setting when urgent broadcast; The then directly operation of execution in step 505 when the urgent broadcast rank is lower than the rank of setting, then points out the user whether need show urgent broadcast; Only when user command shows urgent broadcast, the operation of execution in step 505 again.
Introduce a kind of transmission method of emergent broadcast below again, its process is as shown in Figure 6, may further comprise the steps:
Step 601: in the urgent broadcast server, emergency broadcast message (literal, image or audio frequency and video) is edited or encoded;
Step 602: urgent broadcast is set is designated as non-zero, and be encapsulated into multiplex frame head " urgent broadcast indication " field, emergency broadcast message is encapsulated in the control table, be packaged into multiplexed frame at last;
In this step; For terminal processes makes things convenient for and reduces unnecessary step and power consumption; Also can the urgent broadcast rank be separated with emergency broadcast message; Be about to the urgent broadcast rank and be encapsulated into multiplex frame head or multiplex sub frame head, for example, can the urgent broadcast rank be encapsulated in " reservation " field in the multiplex frame head.
Step 603: encapsulated integration frame is modulated on the electromagnetic wave of physical channel, and this electromagnetic wave is transmitted in the air;
In other embodiments, can adopt the wheel broadcast mode to send electromagnetic wave signal, emergency broadcast message promptly of the same race constantly repeats to send.
Step 604: the tuning multiplexed frame that obtains is carried out with the electromagnetic wave signal that receives in the terminal;
Step 605: judge whether the terminal TV application module is opened, if, then multiplexed frame is sent to the terminal TV application module and get into processing, otherwise multiplexed frame is sent to backstage urgent broadcast processing unit processes, get into step 605:
Step 606: backstage urgent broadcast processing unit is resolved multiplex frame head, reads " urgent broadcast indication " field, judges whether this field is non-zero, if, get into step 607, otherwise process ends;
Step 607: beginning receiving control information table, resolve multiplexed frame and obtain the urgent broadcast data segment, the assembly unit of broadcast data section section is obtained emergency broadcast message (literal, image or audio frequency and video), and be shown to the user.
In this step, when the urgent broadcast rank in the multiplexed frame of receiving was separated with emergency broadcast message, the urgent broadcast rank in multiplex frame head or the multiplex sub frame head was further read at the terminal; Be superior to the rank of setting when urgent broadcast; The terminal is the directly operation of execution in step 606 then, and when the urgent broadcast rank is lower than the rank of setting, the terminal then points out the user whether need show urgent broadcast; Only when user command shows urgent broadcast, the operation of execution in step 606 again.
Can find out from the foregoing description, the mode that urgent broadcast independent process unit, backstage provided by the invention and terminal TV application module are complementary, can guarantee starting up of terminal after, receiving emergent broadcast in real time.In addition; In a preferred embodiment, the mode that the urgent broadcast rank is separated with emergency broadcast message provided by the present invention makes when more low-level urgent broadcast is received at the terminal; Only under the situation that the user need show, extract emergency broadcast message; And in the independent operating urgent broadcast processing procedure of backstage, the mode that periodically opens and closes tuner that adopts has all reduced the unnecessary power consumption in terminal.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those skilled in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. a terminal has the mobile TV function, and this terminal comprises display module, terminal TV application module, it is characterized in that,
This terminal also comprises the backstage urgent broadcast processing unit that links to each other with said display module; Also comprise the judging unit that all links to each other with said backstage urgent broadcast processing unit and said terminal TV application module; Said backstage urgent broadcast processing unit comprises demultiplexing module and the urgent broadcast processing module that connects successively; Wherein
Said judging unit after being used to receive multiplexed frame, judges whether the terminal TV application module starts, if, multiplexed frame is sent to the terminal TV application module handle, otherwise, this multiplexed frame is sent to said backstage urgent broadcast processing unit;
Said demultiplexing module is used for judging whether the multiplexed frame of reception has urgent broadcast, when in the multiplexed frame urgent broadcast being arranged, is used to resolve multiplexed frame, and the urgent broadcast data segment that parsing obtains is sent to said urgent broadcast processing module;
Said urgent broadcast processing module is used for the urgent broadcast data segment that assembly unit is received, and the emergency broadcast message that obtains after the assembly unit is sent to said display module.
2. terminal as claimed in claim 1 is characterized in that,
Said demultiplexing module also is used for reading the urgent broadcast rank of multiplex frame head or multiplex sub frame head, and according to different urgent broadcast ranks, this multiplexed frame is carried out handled.
3. terminal as claimed in claim 2 is characterized in that,
When said urgent broadcast was superior to the setting rank, said demultiplexing module was resolved multiplexed frame, and the urgent broadcast data segment that will obtain after will resolving sends to said urgent broadcast processing module.
4. terminal as claimed in claim 2 is characterized in that,
When the urgent broadcast rank is lower than the setting rank; Whether said demultiplexing module warning terminal user shows this urgent broadcast; If; Said demultiplexing module is resolved multiplexed frame and is obtained the urgent broadcast data segment, and this urgent broadcast data segment is sent to said urgent broadcast processing module, otherwise demultiplexing module does not process the multiplexed frame that receives.
5. terminal as claimed in claim 1 is characterized in that,
Said terminal periodically receives multiplexed frame according to the urgent broadcast duration, and wherein, the cycle time that receives multiplexed frame is less than the urgent broadcast duration.
6. the method for a terminal receiving emergent broadcast, said terminal is terminal as claimed in claim 1, it is characterized in that,
When said terminal judges terminal TV application module not enabled; Receive multiplexed frame through backstage urgent broadcast processing unit; If in the multiplexed frame that receives urgent broadcast is arranged; Then said terminal to this multiplexed frame resolve obtain the urgent broadcast data segment after, this urgent broadcast data segment of assembly unit obtains emergency broadcast message, and is shown to the terminal use.
7. method as claimed in claim 6 is characterized in that,
If when in the multiplexed frame that receives urgent broadcast being arranged, this method also reads urgent broadcast rank in multiplex frame head or the multiplex sub frame head, and according to different urgent broadcast ranks, multiplexed frame is handled accordingly.
8. method as claimed in claim 7 is characterized in that,
When said urgent broadcast is superior to the setting rank, said terminal parses multiplexed frame;
When said urgent broadcast rank is lower than when setting rank, whether said terminal notifying terminal use shows urgent broadcast, only when user command shows, and said terminal parses multiplexed frame.
9. like claim 6,7 or 8 described methods, it is characterized in that,
Said terminal periodically receives multiplexed frame according to the urgent broadcast duration, and wherein, the cycle time that receives multiplexed frame is less than the urgent broadcast duration.
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| CN 200810165945 CN101369856B (en) | 2008-09-25 | 2008-09-25 | Terminal and its method for implementing emergency broadcast |
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| CN 200810165945 CN101369856B (en) | 2008-09-25 | 2008-09-25 | Terminal and its method for implementing emergency broadcast |
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| CN101369856A CN101369856A (en) | 2009-02-18 |
| CN101369856B true CN101369856B (en) | 2012-05-09 |
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Granted publication date: 20120509 Termination date: 20160925 |