CN101282504A - Method for transmitting emergency broadcast message through CMMB emergency broadcast table - Google Patents
Method for transmitting emergency broadcast message through CMMB emergency broadcast table Download PDFInfo
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- CN101282504A CN101282504A CNA2007100907254A CN200710090725A CN101282504A CN 101282504 A CN101282504 A CN 101282504A CN A2007100907254 A CNA2007100907254 A CN A2007100907254A CN 200710090725 A CN200710090725 A CN 200710090725A CN 101282504 A CN101282504 A CN 101282504A
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Abstract
The invention discloses a method for transmitting emergent broadcast message via a CMMB emergent broadcast table, comprising the following steps of: dismantling and packaging the emergent broadcast message into one or a plurality of emergent broadcast data sections suitable for loading by the emergent broadcast table, and transmitting the data sections in a control logic channel of a CMMB system via the emergent broadcast table; receiving the emergent broadcast table by a terminal in virtue of the control logic channel, de-packaging and combining the emergent broadcast data sections to obtain the emergent broadcast message. The invention realizes transmission and reception of the emergent broadcast message simply and effectively, which improves usage experience of the users.
Description
Technical field
The present invention relates to China mobile multi-media broadcasting technology, relate in particular to a kind of method by CMMB urgent broadcast table transmission emergency broadcast message.
Background technology
Urgent broadcast is a kind of business of utilizing broadcast communication system to announce emergency rapidly to the public.When accidents such as generation natural calamity, accident disaster, public health and social safety, cause or may 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.
In areas such as the U.S. and Europe, urgent broadcast has formed a cover perfect system, and has obtained huge effect in the application of reality.And the urgent broadcast of China also is in developing stage, though State Council has issued Master State Plan for Rapid Response to Public Emergencies in 2006, and in prediction scheme specific definition the processing regulations of accident, comprise Emergent Public Events classification, warning level, zero-time, may coverage, caution item, the measure that should take and issue office etc.How this handles early warning information but this prediction scheme is not expressed broadcast system especially, and the radio, TV and film industries of China do not provide the urgent broadcast system of similar US and European as yet yet.This is the problem that China presses for solution at present.
And as the new business of bringing after the broadcasting and TV digitlization, China Mobile multimedia broadcasting (CMMB:China Mobi1eMultimedia Broadcast) via satellite with the terrestrial wireless broadcast mode, can allow people pass through the various vehicles, multiple portable terminal device receives radio and television rating and information service anywhere or anytime.Utilizing mobile multimedia broadcast system to transmit emergency broadcast message will be a kind of very effective and strong mode undoubtedly.But because the particularity of urgent broadcast and the own characteristic of CMMB, emergency broadcast message must transmit by the limited control logic channel of bandwidth resources, this has caused abundant multimedia emergency broadcast message directly to transmit by the urgent broadcast table, we need a kind of mode rapidly and efficiently, solve the problem that the multimedia emergency broadcast message transmits in the CMMB system, also improve the user simultaneously and experience for the reception of emergency broadcast message.
Summary of the invention
Therefore technical problem to be solved by this invention provides a kind of method by CMMB urgent broadcast table transmission emergency broadcast message, and this method can effectively utilize the CMMB system rapidly to the generation of the promptly and accurately detailed announcement emergency of the public.
The present invention specifically is achieved in that
A kind of method by CMMB urgent broadcast table transmission emergency broadcast message, comprise the steps: emergency broadcast message is split and is encapsulated as the urgent broadcast data segment of one or more suitable urgent broadcast table carryings, in the control logic channel of CMMB system, transmit by the urgent broadcast table; Terminal is by control logic channel receiving emergent broadcast table, and wherein urgent broadcast data segment is carried out decapsulation, merges and obtain emergency broadcast message.
Press such scheme, the urgent broadcast data segment comprises: network-level, network ID, message id and urgent broadcast data.
Press such scheme, this method further comprises: each has the urgent broadcast data segment of identical network rank, network ID and message id by emergency broadcast message being split, encapsulates acquisition; Each urgent broadcast data segment forms the urgent broadcast table that meets the definition of GY/T 220.2-2006 table 12 by encapsulation; Terminal obtains each urgent broadcast data segment by the urgent broadcast table being carried out decapsulation; Terminal is carried out decapsulation, is merged the acquisition emergency broadcast message by the urgent broadcast data segment that will have identical network rank, network ID and message id.
Press such scheme, the urgent broadcast data segment also comprises: protocol version, agreement minimum version number, section sequence number and section sum.
Press such scheme,, merge all urgent broadcast data and obtain emergency broadcast message with identical network rank, network ID and message id by the order of section sequence number field indication and the quantity of the total digital section indication of section.
Press such scheme, the urgent broadcast data comprise N 8 bit fields, the segment data of carrying emergency broadcast message, and N=urgent broadcast data segment, length-6, the urgent broadcast data segment, length is defined by GY/T 220.2-2006 table 12.
Press such scheme, the urgent broadcast table transmits in the control logic channel of MF_ID=0 with the form of control information table, and its table is designated 0x10.
Owing to adopted such scheme, the present invention compared with prior art has the following advantages:
The present invention is by fractionation and encapsulation to emergency broadcast message, simple and effective transmission and the reception that realizes the multimedia emergency broadcast message, the user can receive abundant multimedia emergency broadcast message timely and effectively, more comprehensively understand the extent of injury, urgency level and the developing state of emergency, also can obtain more detailed emergency treating method.The present invention has improved user's experience greatly.
Description of drawings
Fig. 1 is emergency broadcast message transfer process figure;
Fig. 2 is the position and the urgent broadcast data segment structural representation of urgent broadcast table.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is further described:
Before describing the inventive method in detail, below earlier China Mobile multimedia broadcasting (China Mobile MultimediaBroadcasting is called for short CMMB) and China Mobile multimedia broadcasting multiplexed frame are introduced, so that understand the present invention better.
The CMMB system utilizes high-power S-band satellite-signal to cover the whole country, utilize ground supplement translator with covering the satellite-signal blind area with content repeater satellite signal, benefit point simultaneously frequently, utilize mobile radio networks to make up return path, form the mobile media broadcasting network that One-to-All Broadcast and two-way interactive combine.
Because the required data quantity transmitted of mobile multimedia broadcast system is different with common family expenses large screen television with the transmission environment demand, therefore according to the characteristics of China's Mobile Multimedia Broadcasting, the CMMB system has adopted the multiplex technique of independent research.Multiplexed frame is made up of multiplex frame head, multiplexing payload and filling, and its effect and purpose are encapsulation and the arrangements in order to finish audio frequency, video, data and control information, it can be fitted on the mobile multimedia broadcasting channel transmit.Each multiplexed frame is by the MF_ID unique identification, and the MF_ID span is 0～39, and wherein the multiplexed frame of MF_ID==0 is used for bear control information, and other multiplexed frame is used for bearer service.
In GY/T 220.2-2006, defined the urgent broadcast table in the realization of mobile multimedia broadcast system for urgent broadcast.The present invention is exactly on this basis, further urgent broadcast table institute data carried by data load is defined, the multimedia emergency broadcast message of big data quantity is split and be encapsulated as the urgent broadcast data segment of one or more suitable urgent broadcast table carryings, thereby realized that the multimedia emergency broadcast message is by transmission and the reception of urgent broadcast table in the CMMB system.
The invention provides a kind of method by CMMB urgent broadcast table transmitting multimedia emergency broadcast message, this method realizes transmission and the reception of emergency broadcast message in the CMMB system by fractionation, encapsulation to emergency broadcast message.The present invention mainly comprises the content of following 2 aspects:
1, emergency broadcast message transmission course
As shown in Figure 1, the transmission course of emergency broadcast message comprises the steps:
A) in mobile multimedia broadcast system, emergency broadcast message is split, is encapsulated as one or more urgent broadcast data segments with identical network rank, network ID and message id.
B) each urgent broadcast data segment forms the urgent broadcast table that meets the definition of GY/T 220.2-2006 table 12 by encapsulation.
C) the urgent broadcast table transmits by the control logic channel.
D) terminal is by control logic channel receiving emergent broadcast table.
E) terminal is by encapsulation obtains the urgent broadcast data segment to the urgent broadcast tabulation.
F) terminal is carried out decapsulation, is merged the acquisition emergency broadcast message by the urgent broadcast data segment that will have identical network rank, network ID and message id.
2, the encapsulation process of urgent broadcast data segment
A) the urgent broadcast data segment is the data load of urgent broadcast table, and GY/T 220.2-2006 table 12 is seen in the definition of urgent broadcast table, the definition of urgent broadcast data segment and and the relation of multiplexed frame as shown in Figure 2.The urgent broadcast data segment is encapsulated in the urgent broadcast table, the urgent broadcast table transmits in the control logic channel of MF_ID=0 with the form of control information table, its table identification number is 0x10, and the urgent broadcast table comprises urgent broadcast gauge outfit, urgent broadcast data segment and CRC_32.The urgent broadcast data segment comprises protocol version, agreement minimum version number, network-level, network ID, message id, section sequence number, section sum and urgent broadcast data.
B) the urgent broadcast data segment is the data load of urgent broadcast table, the relevant information of urgent broadcast data and urgent broadcast data has been described, comprise protocol version, agreement minimum version number, network-level, network ID, message id, section sequence number and section sum, urgent broadcast data segment syntactic definition is as shown in table 1:
Table 1 urgent broadcast data segment
| Grammer | Figure place | Identifier |
| Urgent broadcast data segment () { protocol version agreement minimum version network-level network ID message id section sequence number section sum for (i=0; I＜N; I++) { urgent broadcast data } } | 4 4 4 12 16 4 4 8 | bslbf bslbf bslbf bslbf uimsbf bslbf bslbf uimsbf |
Wherein, protocol version: 4 bit fields, span 0 ~ 15, expression urgent broadcast protocol version, current value is 0; Agreement minimum version number: 4 bit fields, span 0 ~ 15, sign can compatible minimum version sequence numbers, and value is not more than current protocol version; Network-level: 4 bit fields, see GY/T 220.2-2006 network information table syntactic definition; Network ID: 12 bit fields, see GY/T 220.2-2006 network information table syntactic definition; Message id: 16 bit fields identify an emergency message.Allow to broadcast simultaneously a plurality of emergency messages, by the unique definite emergency message of network-level, network ID and message id three; The section sequence number: 4 bit fields, span 0 ~ 15 identifies the sequence number of current urgent broadcast data segment; Section sum: 4 bit fields, span 0 ~ 15, the sum of identifying emergent broadcast data section; Urgent broadcast data: N 8 bit fields, the segment data of carrying emergency broadcast message.By order of " section sequence number " field indication and the quantity of " section sum " field indication, merge all urgent broadcast data and can obtain emergency broadcast message with identical network rank, network ID and message id.This field length N need try to achieve according to the urgent broadcast data segment, length of the urgent broadcast table of GY/T 220.2-2006 table 12 definition, and computing formula is as follows: (N=urgent broadcast data segment, length-6).
Claims (7)
1. the method by CMMB urgent broadcast table transmission emergency broadcast message is characterized in that this method comprises the steps:
Emergency broadcast message is split and is encapsulated as the urgent broadcast data segment of one or more suitable urgent broadcast table carryings, in the control logic channel of CMMB system, transmit by the urgent broadcast table;
Terminal is by control logic channel receiving emergent broadcast table, and wherein urgent broadcast data segment is carried out decapsulation, merges and obtain emergency broadcast message.
2. the method for transmission emergency broadcast message as claimed in claim 1 is characterized in that, the urgent broadcast data segment comprises: network-level, network ID, message id and urgent broadcast data.
3. the method for transmission emergency broadcast message as claimed in claim 2 is characterized in that, this method further comprises:
Each has the urgent broadcast data segment of identical network rank, network ID and message id by emergency broadcast message being split, encapsulates acquisition;
Each urgent broadcast data segment forms the urgent broadcast table that meets the definition of GY/T 220.2-2006 table 12 by encapsulation;
Terminal obtains each urgent broadcast data segment by the urgent broadcast table being carried out decapsulation;
Terminal is carried out decapsulation, is merged the acquisition emergency broadcast message by the urgent broadcast data segment that will have identical network rank, network ID and message id.
4. the method for transmission emergency broadcast message as claimed in claim 3 is characterized in that, the urgent broadcast data segment also comprises: protocol version, agreement minimum version number, section sequence number and section sum.
5. the method for transmission emergency broadcast message as claimed in claim 4, it is characterized in that, by the order of section sequence number field indication and the quantity of the total digital section indication of section, merge all urgent broadcast data and obtain emergency broadcast message with identical network rank, network ID and message id.
6. the method for transmission emergency broadcast message as claimed in claim 2, it is characterized in that the urgent broadcast data comprise N 8 bit fields, the segment data of carrying emergency broadcast message, N=urgent broadcast data segment, length-6, the urgent broadcast data segment, length is defined by GY/T 220.2-2006 table 12.
7. as the method for any described transmission emergency broadcast message in the claim 1 to 6, it is characterized in that the urgent broadcast table transmits in the control logic channel of MF_ID=0 with the form of control information table, its table is designated 0 * 10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100907254A CN101282504B (en) | 2007-04-05 | 2007-04-05 | Method for transmitting emergency broadcast message through CMMB emergency broadcast table |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010045806A1 (en) * | 2008-10-22 | 2010-04-29 | 中兴通讯股份有限公司 | A method and an apparatus for transferring the emergency broadcast message |
| WO2010045778A1 (en) * | 2008-10-21 | 2010-04-29 | 中兴通讯股份有限公司 | Transmission method and device of emergent broadcasting |
| CN101998278A (en) * | 2009-08-26 | 2011-03-30 | 北京中传视讯科技有限公司 | Method of terminal receiving strategy based on CMMB (China Mobile Multimedia Broadcasting) data broadcasting channel |
| CN102905180A (en) * | 2012-09-11 | 2013-01-30 | 国家广播电影电视总局广播科学研究院 | Method for generating and broadcasting emergency broadcasting message |
| US10382937B2 (en) | 2015-11-30 | 2019-08-13 | International Business Machines Corporation | Communicating location specific emergency information to a mobile device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010049041A (en) * | 1999-11-30 | 2001-06-15 | 윤종용 | Method for transmitting and receiving multimedia data using short message service in portable radio telephone |
| US7869399B2 (en) * | 2003-01-06 | 2011-01-11 | Interdigital Technology Corporation | Method and apparatus for controlling the distribution of multimedia broadcast services |
| WO2005020607A2 (en) * | 2003-08-20 | 2005-03-03 | Siemens Aktiengesellschaft | Method and system for transmitting a multimedia message over an air interface performing segmentation and encoding at radio link control layer |
| KR100663403B1 (en) * | 2005-02-07 | 2007-01-02 | 삼성전자주식회사 | Method for transmitting a multimedia message and system therefor |
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2007
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010045778A1 (en) * | 2008-10-21 | 2010-04-29 | 中兴通讯股份有限公司 | Transmission method and device of emergent broadcasting |
| WO2010045806A1 (en) * | 2008-10-22 | 2010-04-29 | 中兴通讯股份有限公司 | A method and an apparatus for transferring the emergency broadcast message |
| CN101998278A (en) * | 2009-08-26 | 2011-03-30 | 北京中传视讯科技有限公司 | Method of terminal receiving strategy based on CMMB (China Mobile Multimedia Broadcasting) data broadcasting channel |
| CN102905180A (en) * | 2012-09-11 | 2013-01-30 | 国家广播电影电视总局广播科学研究院 | Method for generating and broadcasting emergency broadcasting message |
| CN102905180B (en) * | 2012-09-11 | 2015-10-28 | 国家广播电影电视总局广播科学研究院 | A kind of method generating and broadcast emergency broadcast message |
| US10382937B2 (en) | 2015-11-30 | 2019-08-13 | International Business Machines Corporation | Communicating location specific emergency information to a mobile device |
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| CN101282504B (en) | 2011-05-11 |
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