CN100479354C - Method for transmitting condition receiving information in mobile multimedia broadcast network - Google Patents
Method for transmitting condition receiving information in mobile multimedia broadcast network Download PDFInfo
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- CN100479354C CN100479354C CNB2006101496832A CN200610149683A CN100479354C CN 100479354 C CN100479354 C CN 100479354C CN B2006101496832 A CNB2006101496832 A CN B2006101496832A CN 200610149683 A CN200610149683 A CN 200610149683A CN 100479354 C CN100479354 C CN 100479354C
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Abstract
The invention relates to a method for transmitting conditional access information in the mobile multimedia broadcasting network, which includes: (1) it determines the type of user terminals and records the number of the multimedia terminals with mobile communication function. (2) When conditional access information is need to be sent to one of the terminals, the information is sent to the processing system/module of the described mobile communication terminal if the terminal is a mobile multimedia communication terminal with mobile communication function. (3) The described processing system/module sends the conditional access information to the described terminal according to the recorded terminal number. (4) The described mobile multimedia communication terminal receives the conditional access information and scramble/descramble the received transmission business to access business information according to the conditional information.
Description
Technical field
The present invention relates to filed of mobile multimedia broadcasting, the method for transmitting condition receiving information in particularly a kind of mobile media broadcasting network.
Background technology
Along with the development of digital television techniques, spectators can be in the face of the selection of increasing digital television program.And the broadcasting dealer requires that then the user is collected certain license fee and uses owing to the increase of cost of investment.Condition to be accepted system and in order satisfying some broadcast service to be implemented system of access control.The condition reception technique is the most typical application of contemporary cryptology at digital TV field, is that the core technology of digital TV encryption control guarantees, for the operation of Digital Television provides the necessary technology means; It uses various digital technologies to handle by the scrambling to program, makes and has only authorized user just can watch (listening) by scrambled program, can realize the paid service of Digital Television (audio frequency) broadcast system.
Existing digital TV conditional receives three layers of key mechanism of general employing the transmission program is encrypted, condition receiving system key factor under this mechanism mainly comprises control word (CW), Entitlement Control Message (ECM) and Entitlement Management Message (EMM), also a guy's distributing key.
In the environment of digital video signal, the scrambling operation is controlled by a scrambling control word to finish, and the receiving terminal side can synchronously be recovered to disturb the serial at random of use by control word and be carried out descrambling to disturbing vision signal.The data of control word after the business cipher key encryption and after the scrambling together send, and decipher controlled word with business cipher key in user's receiving course, produce descrambling series by control word and are decrypted.
The condition that Entitlement Control Message ECM obtains after to be business cipher key to control word and Control Parameter encrypt receives information, and the decoder of user side could controlled word only after obtaining business cipher key prevailing for the time being in force, thereby realizes the data descrambling.
EMM is that the condition that obtains after SAS Subscriber Authorization System is encrypted business cipher key with distributing key receives information; The transmission of business cipher key can be to be solidificated in by modes such as smart cards to transmit in the chip, also can be to add crammed safety channel by authoring system with distributing key to pass to the user, realizes by the EMM Entitlement Management Message.At receiving terminal, decoder at first will be deciphered EMM with distributing key, obtains business cipher key, with business cipher key ECM is deciphered controlled word and Control Parameter then, could be to the data descrambling.
Distributing key generally is to offer the user by smart card, and distributing key is solidificated in the smart card, and with the encrypted form storage, the user need provide password can decipher use.
User terminal receives that these conditions receive information, according to the individual distributing key that is solidificated in terminal or smart card, solve product key, business cipher key and control word etc. more according to this; If the user has the mandate of watching program, will solve CW expressly, and transmit and receive descrambling equipment and finish descrambling work program, just can normally watch program.
It is the mode that issues by unidirectional broadcast network that traditional Mobile Multimedia Broadcasting or Digital Television receive message transmission to condition, promptly after the condition reception information encryption and the multiplexing together back of video/audio is issued by radio network with transport stream; For the user who protects new access can in time obtain authorized user message, must take the radio network bandwidth of a large amount of preciousnesses circularly at the broadcast channel distributing authentication information, increased extra expense; In addition,, service authorization information need be broadcast again, also more extra bandwidth will be taken because user's complaint or application are initiatively authorized.Thisly all adopt broadcast mode to issue to all authorized user messages, the mode that take and total number of users, the business of bandwidth are carried out is closely related, number of users is many more, class of business and set meal are many more, it is long more that authorization message is issued to the shared broadcast channel bandwidth of the user terminal time big more, that authorize, is unfavorable for carrying out of broadcast operator business.
Summary of the invention
The object of the present invention is to provide the method for transmitting condition receiving information in a kind of mobile media broadcasting network, by this method, can reduction condition reception information issue, guarantee the reliable transmission of authorization message the taking of broadcast bandwidth.
For achieving the above object, the present invention takes following technical scheme:
The method of transmitting condition receiving information in a kind of mobile media broadcasting network, described mobile media broadcasting network comprises mobile communication interface system/module, it is characterized in that, this method comprises the steps:
(1) determines type of user terminals,, write down the number of this Terminal Type for multi-medium broadcasting receiving terminal with mobile communication function;
(2) at needs when certain user terminal transmission condition receives information, if this user terminal is the multi-medium broadcasting receiving terminal with mobile communication function, then described condition reception information is sent to described mobile communication interface treatment system/module;
(3) according to the termination number of described record, described condition reception information is sent to described terminal by described mobile communication interface system/module.
Further, said method also comprises:
(4) after described multi-medium broadcasting receiving terminal with mobile communication function receives this condition reception information,, the transmitting business stream that receives is carried out descrambling from radio network, obtain business information according to this conditional information.
In the above-mentioned steps (1), when opening an account, determine the classification of this user's terminal, and preserve termination number to the user by broadcast operator.
In the above-mentioned steps (1), described termination number generally is a phone number, and this number is distributed to described terminal by Mobile Network Operator.
In the above-mentioned steps (2), described at needs when certain user terminal transmission condition receives information, be included in described user when the service authority altering event takes place.
In the above-mentioned steps (2),, then described condition is received information and transmit by radio network with transport stream if this user terminal is not the multi-medium broadcasting receiving terminal with mobile communication function; The described multi-medium broadcasting receiving terminal that does not have mobile communication function solves condition and receives information from the transmitting business stream that radio network receives, receive information according to this condition, to the transport stream descrambling, obtains business information.
In the above-mentioned steps (3), described mobile communication interface system/module by the short message mode, is sent to this terminal with described condition reception information, and described short message comprises special a short message type or an identification information; Described mobile communication interface system/module can require the mobile communication short-message system that receipt is provided, if do not receive receipt message at the appointed time or receive customer complaint, then this user terminal is resend described condition and receives information.
Described mobile communication interface system/module also can be passed through WAP Push, MMS, Email, and perhaps the wireless packet data transmission means is sent to this terminal with described condition reception information.
Method of the present invention realizes easy, utilizes mobile communications network that original condition is received message transmission and shunts, and has saved broadcast system transmission bandwidth and overhead; Security authentication mechanism and the reliable transmission mechanism of having utilized the mobile communications network user to insert in addition, the fail safe that has improved condition reception message transmission has increased the complexity that cracks, and has very big using value.
Description of drawings
Fig. 1 is the schematic diagram that the mobile multi-media broadcasting service condition receives message transmission
Embodiment
Method of the present invention is to pass through radio network, mobile communications network transmitting condition receiving information respectively according to the classification of user's receiving terminal, can reduction condition reception information issue taking broadcast bandwidth; Simultaneously the mobile communications network mode is issued, if not start of user terminal when distributing authentication information, because the reliable delivery mechanism of mobile communication itself could guarantee that also authorization message message is delivered to terminal.Simultaneously mobile phone terminal use transmission condition is received information, only need point-to-point once transmission, and do not need to resemble radio network, need circulation to broadcast repeatedly and the outer broadcast bandwidth resource of occupying volume.
Subscriber Management System is classified to the user, mainly be that to distinguish user receiving equipment be unidirectional multi-medium broadcasting receiving terminal (for example PMP, PDA or have the MP4/MP3 etc. of the multimedia broadcasting receiving function) multi-medium broadcasting receiving terminal that still has mobile communication function (as mobile phone etc.), if the latter then when registered user's data, requires the phone number of recording user.
The front end authentication management system carries out preliminary treatment according to the change of customer service authority to service authorization, sends authorization requests by the Subscriber Management System interface to condition receiving system simultaneously, and class of subscriber attribute and phone number are provided.
After the head end conditional receiving system was received the authorization request message of Subscriber Management System, the condition that generates this user received information, judges the user terminal classification, if unidirectional multimedia receiver terminal user, condition receives information and transmits by radio network with transport stream; If the mobile phone terminal user then hands to mobile communication interface treatment system (module) to condition reception information, the short-message system by the mobile network is transferred to user terminal again.
Mobile phone terminal directly receives information according to this condition, and the transmitting business stream that receives from radio network carries out descrambling and obtains business information; The transmitting business stream that unidirectional mobile multimedia receiving terminal then receives from radio network solves condition and receives information, and the transport stream descrambling is obtained programme information.
Described condition receives information can be the business cipher key of encrypting, and this moment, fore-end generated the Entitlement Control Message of user terminal, and this information is sent to user terminal by radio network.
Above-mentioned mobile communication interface treatment system (module) can receive information by the short message issuing condition, also can adopt other mobile communications network mode, such as modes such as WAP Push, MMS, Email or wireless packet data transmission.
Fig. 1 is the schematic diagram that the mobile multi-media broadcasting service condition receives message transmission.Below in conjunction with accompanying drawing implementation method of the present invention is further described.
100 broadcast operator are when opening an account to the user, and the user provides the receiving terminal classification; If the cellphone subscriber need provide phone number, and be kept in the Subscriber Management System.
110 when subscriber arrearage, when supplementing or ordering, quitting the subscription of multi-media broadcasting service etc. with money and producing service authority change incident, Subscriber Management System carries out preliminary treatment to user's authorization message, simultaneously by with the interface notification condition receiving system of condition receiving system need be to subscriber authorisation; Send in the subscriber data message of condition receiving system and carry class of subscriber attribute and phone number, service authority information etc.
200 condition receiving systems generate the business cipher key of encrypting according to the customer service authority information; Condition receiving system is differentiated user terminal attribute classification, if the cell phone type terminal is then passed to short message interface processing module (system) to the business cipher key of encrypting by interface.
210 short message interface processing modules be responsible for by with mobile communications network short messaging gateway interface, encrypted service key is sent to mobile phone terminal by short message.For the short message of condition access information and the difference of other short messages, define a special short message types (ServiceType) or sign (TeleserviceID) can for this short message, be convenient to terminal recognition like this; For guaranteeing that encrypted service key is delivered to user mobile phone reliably, can require the mobile communication short-message system that receipt is provided.If do not receive receipt message or receive customer complaint, then this user is issued this encrypted service key again in fixed time.
300 if unidirectional multimedia service receiving terminal, then gives multiplexing equipment condition reception information and performance guide information, business information are multiplexed into transport stream together; The head end conditional receiving system generates the Entitlement Control Message of user terminal, also is multiplexed into transport stream, sends to user terminal by radio network after step 310 scrambling.
The control word information that 310 condition receiving systems produce is given scrambling equipment, and scrambling equipment is handed down to terminal by mobile media broadcasting network after according to control word the transmission program stream being disturbed processing.
320 mobile phone terminals directly are decrypted the business cipher key that receives, obtain business cipher key, with this business cipher key the Entitlement Control Message that receives from radio network is decrypted, obtain the scrambling control word, carry out descrambling with this scrambling control word to receiving transport stream, obtain business information from radio network.And unidirectional multimedia receiver terminal taking-up condition from transport stream at end receives information, and according to the traffic assignments key of terminal or terminal intelligent card, the condition that decrypts receives information, generates business cipher key.With this business cipher key the Entitlement Control Message that receives from radio network is decrypted, obtains the scrambling control word, carry out descrambling to receiving transport stream, obtain business information from radio network with this scrambling control word.
Claims (11)
1, the method for transmitting condition receiving information in a kind of mobile media broadcasting network, described mobile media broadcasting network comprises mobile communication interface system/module, wherein, the information that condition reception information obtains after to be business cipher key to control word and Control Parameter encrypt, it is characterized in that this method comprises the steps:
(1) determines type of user terminals,, write down the number of this Terminal Type for multi-medium broadcasting receiving terminal with mobile communication function;
(2) at needs when certain user terminal transmission condition receives information, if this user terminal is the multi-medium broadcasting receiving terminal with mobile communication function, then described condition reception information is sent to described mobile communication interface treatment system/module;
(3) according to the termination number of described record, described condition reception information is sent to described terminal by described mobile communication interface system/module.
2, the method for claim 1 is characterized in that, further comprises:
(4) after described multi-medium broadcasting receiving terminal with mobile communication function receives this condition reception information,, the transport stream that receives is carried out descrambling from radio network, obtain business information according to this conditional information.
3, the method for claim 1 is characterized in that, in the described step (1), described termination number is a phone number, and this number is distributed to described terminal by Mobile Network Operator.
4, the method for claim 1 is characterized in that, in the described step (1), when opening an account to the user, determines the classification of this user's terminal by broadcast operator, and preserves termination number.
5, the method for claim 1 is characterized in that, in the described step (2), when certain user terminal transmission condition receives information, is included in described user when the service authority altering event takes place at needs.
6, the method for claim 1 is characterized in that, in the described step (2), if this user terminal is not the multi-medium broadcasting receiving terminal with mobile communication function, then described condition is received information and transmits by radio network with transport stream.
7, method as claimed in claim 6, it is characterized in that, further comprise: the described multi-medium broadcasting receiving terminal that does not have mobile communication function solves condition and receives information from the transport stream that radio network receives, and receives information according to this condition, to the transport stream descrambling, obtain business information.
8, the method for claim 1 is characterized in that, in the described step (3), described mobile communication interface system/module by the short message mode, is sent to this terminal with described condition reception information.
9, the method for claim 1 is characterized in that, in the described step (3), described mobile communication interface system/module, by WAP Push, MMS, Email, perhaps the wireless packet data transmission means is sent to this terminal with described condition reception information.
10, method as claimed in claim 8 is characterized in that, described short message comprises special a short message type or an identification information.
11, method as claimed in claim 8, it is characterized in that, described mobile communication interface system/module further requires the mobile communication short-message system that receipt is provided, if do not receive receipt message at the appointed time or receive customer complaint, then this user terminal is resend described condition and receive information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101496832A CN100479354C (en) | 2006-10-13 | 2006-10-13 | Method for transmitting condition receiving information in mobile multimedia broadcast network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101496832A CN100479354C (en) | 2006-10-13 | 2006-10-13 | Method for transmitting condition receiving information in mobile multimedia broadcast network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1988690A CN1988690A (en) | 2007-06-27 |
| CN100479354C true CN100479354C (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101496832A Expired - Fee Related CN100479354C (en) | 2006-10-13 | 2006-10-13 | Method for transmitting condition receiving information in mobile multimedia broadcast network |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101646059B (en) * | 2008-08-07 | 2012-06-27 | 北京视博数字电视科技有限公司 | Method for sending authorization management information, and conditional access system front-end thereof |
| CN102045639B (en) * | 2009-10-10 | 2015-06-10 | 中兴通讯股份有限公司 | Order relation authentication method, system and receiving system of mobile multimedia broadcasting condition |
| US11341572B2 (en) * | 2013-11-08 | 2022-05-24 | Refinitiv Us Organization Llc | Fair credit screened market data distribution |
| CN103888275B (en) * | 2014-03-27 | 2018-05-01 | 北京悦龙数字广播传媒科技有限责任公司 | The information block of radio network sends system and information block sending method |
| CN104837069A (en) * | 2015-04-14 | 2015-08-12 | 国家新闻出版广电总局广播科学研究院 | NGB-W system and data processing method |
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