CN101409595B - System and method for implementing mobile multimedia broadcast service - Google Patents
System and method for implementing mobile multimedia broadcast service Download PDFInfo
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- CN101409595B CN101409595B CN2008101784519A CN200810178451A CN101409595B CN 101409595 B CN101409595 B CN 101409595B CN 2008101784519 A CN2008101784519 A CN 2008101784519A CN 200810178451 A CN200810178451 A CN 200810178451A CN 101409595 B CN101409595 B CN 101409595B
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Abstract
A method for realizing mobile multimedia broadcasting service comprises: after receiving the service request which is originated by a terminal and aims at certain program, a mobile multimedia network service node open service platform at the visit place originates request to a mobile multimedia network service node open service platform at the attributive place which the corresponding terminal belongs to according to mobile multimedia network identity of the terminal carried in the open service platform at the visit place, a first user key of the terminal is requested to be obtained; the corresponding service key is obtained according to the service identity which is carried in the service request and is corresponding to the requested program; then, after being encrypted by the obtained first user key, the service key is sent to a mobile communication network service node open service platform at the visit place, and the service key is encrypted again by using a second user key of the terminal obtained from a mobile communication network service node open service platform at the attributive place through the mobile communication network service node open service platform at the visit place, finally the service key is sent to the terminal.
Description
Technical field
The present invention relates to China mobile multi-media broadcasting technology, relate in particular to a kind of system and method for realizing mobile multi-media broadcasting service.
Background technology
In the general frame that Mobile Multimedia Broadcasting (CMMB) and mobile communications network merge, being united for terminal by CMMB and mobile communications network provides service.Because a variety of causes, CMMB and mobile communications network subject of operation's networking mode and operation way are all inequality, and also will continue pattern separately, extended network system performance on the original basis in considerable time.Integrate emerging system from multi-level or angle, when particularly UNE is roamed, need provide a kind of method of guaranteeing service security under this scene that solves.
Summary of the invention
The technical problem to be solved in the present invention is in the UNE of mobile multimedia broadcasting service system and mobile communication system, a kind of method and system that realize mobile multi-media broadcasting service are provided, solve terminal is used the mobile multimedia network business when roaming takes place problem.
For addressing the above problem, the invention provides a kind of system that realizes mobile multi-media broadcasting service, comprising:
Visit ground mobile multimedia network service node business platform, ownership place mobile multimedia network service node business platform, visit ground mobile communications network service node business platform and ownership place mobile communications network service node business platform;
Described visit ground mobile multimedia network service node business platform is used for after the service request at certain program that receives the terminal initiation, the ownership place mobile multimedia network service node business platform of mobile multimedia network sign under corresponding this terminal according to this terminal of carrying in the described service request initiated request, first user key of the described terminal of acquisition request; Also be used for getting access to the corresponding service key according to the described requested program corresponding service sign that described service request is carried; After encrypting described business cipher key, described first user key that also is used for getting access to sends to described visit ground mobile communications network service node business platform;
Described ownership place mobile multimedia network service node business platform is used for after the cipher key acquisition request of carrying described mobile multimedia network sign that mobile multimedia network service node business platform is sent with receiving described visit, and the corresponding user key of this mobile multimedia network sign is sent to described visit ground mobile multimedia network service node business platform;
Described visit ground mobile communications network service node business platform sends to described terminal after being used to utilize second user key of the described terminal that gets access to from ownership place mobile communications network service node business platform that described encrypted service key is encrypted once more;
Described ownership place mobile communications network service node business platform is used for after the cipher key acquisition request of carrying described mobile communications network sign that mobile communications network service node business platform is sent with receiving described visit, and the corresponding user key of this mobile communications network sign is sent to described visit ground mobile communications network service node business platform.
Further, said system also can have following feature:
Preserve described first user key and second user key on the described terminal;
Described terminal is used for after receiving described encrypted service key, with described first user key and second user key this business cipher key is decrypted, and after with the business cipher key after the deciphering program current cipher key corresponding with described requested program of described visit ground mobile multimedia network service node business platform broadcasting being decrypted, be decrypted with the program stream data of the program current cipher key after deciphering again described requested program.
Further, said system also can have following feature:
Preserve the corresponding relation of each mobile multimedia network sign and its ownership place mobile multimedia network service node business platform on the described visit ground mobile multimedia network service node business platform;
Described visit ground mobile multimedia network service node business platform is used for the mobile multimedia network sign of this terminal of carrying according to described service request, utilizes described corresponding relation to inquire the ownership place mobile multimedia network service node business platform of described terminal correspondence.
Further, said system also can have following feature:
Preserve the corresponding relation of each mobile communications network sign and its ownership place mobile communications network service node business platform on the described visit ground mobile communications network service node business platform;
Described visit ground mobile communications network service node business platform is used for the mobile communications network sign of this terminal of carrying according to described service request, utilizes described corresponding relation to inquire the ownership place mobile communications network service node business platform of described terminal correspondence.
Further, said system also can have following feature:
Described visit ground mobile multimedia network service node business platform also is used for after receiving described service request, after finding the business platform that described program is provided according to the service identification that wherein carries, obtain described program corresponding service key to the described business platform program request of described program that provides.
The present invention also provides a kind of method that realizes mobile multi-media broadcasting service, comprising:
Visit ground mobile multimedia network service node business platform is after the service request at certain program that receives the terminal initiation, the ownership place mobile multimedia network service node business platform of mobile multimedia network sign under corresponding this terminal according to this terminal of carrying in the described service request initiated request, first user key of the described terminal of acquisition request; Get access to the corresponding service key according to the described requested program corresponding service sign of carrying in the described service request; Send to visit ground mobile communications network service node business platform after with described first user key that gets access to described business cipher key being encrypted then, after second user key of the described terminal that is got access to from ownership place mobile communications network service node business platform by the mobile communications network service node business platform utilization of described visit ground is encrypted once more to described encrypted service key, send to described terminal.
Further, said method also can have following feature:
Preserve described first user key and second user key on the described terminal;
Described terminal is after receiving described encrypted service key, with described first user key and second user key this business cipher key is decrypted, and after with the business cipher key after the deciphering program current cipher key corresponding with described requested program of described visit ground mobile multimedia network service node business platform broadcasting being decrypted, be decrypted with the program stream data of the program current cipher key after deciphering again described requested program.
Further, said method also can have following feature:
Preserve the corresponding relation of each mobile multimedia network sign and its ownership place mobile multimedia network service node business platform on the described visit ground mobile multimedia network service node business platform;
Described visit ground mobile multimedia network service node business platform is the mobile multimedia network sign according to this terminal of carrying in the described service request, utilizes described corresponding relation to inquire the ownership place mobile multimedia network service node business platform of described terminal correspondence.
Further, said method also can have following feature:
Preserve the corresponding relation of each mobile communications network sign and its ownership place mobile communications network service node business platform on the described visit ground mobile communications network service node business platform;
Described visit ground mobile communications network service node business platform is the mobile communications network sign according to this terminal of carrying in the described service request, utilizes described corresponding relation to inquire the ownership place mobile communications network service node business platform of described terminal correspondence.
Further, said method also can have following feature:
Described visit ground mobile multimedia network service node business platform is meant according to getting access to the corresponding service key: described visit ground mobile multimedia network service node business platform is after receiving described service request, after finding the business platform that described program is provided according to the service identification that wherein carries, obtain described program corresponding service key to the described business platform program request of described program that provides.
After adopting the present invention, the service security problem when having solved the UNE roaming preferably.
Description of drawings
Fig. 1 is a roaming network system schematic in the embodiment of the invention;
Fig. 2 is a method flow diagram of realizing mobile multi-media broadcasting service in the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described in detail.
As shown in Figure 1, system involved in the present invention mainly comprises following logic entity: CMMB network, mobile communications network (as China Mobile network).Wherein, the CMMB network is used for ciphered program stream, tube coupling order stream secrete key, business cipher key and user and user key; Mobile communications network is used for encrypting and transport service key, leading subscriber and user key etc.; The program current cipher key information that the terminal utilization is obtained from the CMMB network and the ciphered program data that receive from the CMMB network are decrypted and show the user from the business cipher key information that mobile communications network obtains.
For a terminal, in the CMMB network, comprise business platform (being called for short visit ground service node business platform) CMMB-V that serves this terminal visit ground and business platform (the being called for short ownership place service node business platform) CMMB-H that serves this terminal attaching ground, when this terminal is not roamed, be its ownership place to its visit, promptly CMMB-V and CMMB-H are same service node business platform.CMMB-H and CMMB-V can have identical functions, as: the user is managed, comprise the national user CMMB network routing table of management, wherein, comprised the user ID of user in the CMMB network and the corresponding relation of its ownership place in this routing table; According to national user CMMB network routing table, distinguish the route of user attaching CMMB-H; Program service is provided, ESG (electron service instruction), program scrambling and multiplexing transmission are provided.
And in mobile communications network, for this terminal, equally also comprise ownership place service node business platform CMCC-H and visit ground service node business platform CMCC-V, when this terminal is not roamed, CMCC-V and CMCC-H are same service node business platform, wherein, CMCC-H and CMCC-V can have identical functions, as: SG is provided (Service Guide, business guide), NAF (Network Application Function, network application function), BSF (BootstrappingFunction, function of initializing) and transmission business cipher key; Manage national user mobile network routing table, wherein, comprised the user ID of user in mobile communications network and the corresponding relation of its ownership place in this routing table.
The user transmits to guaranteeing the employed key information of service security by the interface between each entity in the said system when roaming, and wherein, the function of each port is as follows:
I1 is the interface between CMMB-H and the CMMB-V.
CMMB-V obtains this user's information such as user key from ownership CMMB-H by this interface according to the national user CMMB network routing table of preserving on it.
If CMMB-V also relays the program of CMMB-H, then when the user uses the type professional, CMMB-H also provides the business cipher key information of ciphered program stream with EMM (EncryptedManagement Message, encryption handling information) or other encryption by this interface to CMMB-V.
I2 is the interface between CMMB-H and the CMCC-H.
User's information of opening an account and service profile are managed in the NAF of the user management of CMMB-H and CMCC-H, and the user can finish from CMMB-H and CMCC-H and open an account/change of cancellation and service profile.When change took place information, CMMB-H and CMCC-H can keep information synchronization by this interface.Information change takes place mainly comprises following situation: the user activates the service, logout service, suspend operation, recover professional, change user profile, order business, quit the subscription of business etc.
I3 is the interface between CMMB-V and the CMCC-V.
The CMMB network offers mobile communications network by this interface with the business cipher key of encrypting, and sends to terminal after being handled by CMCC-V.
CMCC-V handles this key, comprises using the user key of this user in mobile radio communication that this business cipher key is encrypted packing.
The business cipher key ADMINISTRATION SUBSYSTEM of CMMB network business platform receives the business cipher key request of obtaining that the NAF of mobile network CMCC business platform sends by this interface, and returns to the NAF of mobile network's business platform by this interface and to be moved the business cipher key that the multi-media network user key is encrypted.
When business cipher key took place to upgrade, the business cipher key ADMINISTRATION SUBSYSTEM of CMMB network business platform sent the business cipher key update notification by this interface to the NAF of mobile network CMCC business platform, and the notice terminal is obtained new business cipher key again.
I4:CMCC-H and CMCC-V interface.
This interface is a subscription relation synchronous interface; Order, quit the subscription of interface; User profile change interface; Service fulfillment, cancellation, time-out interface; User key obtains functions such as interface during roaming.
As shown in Figure 2, the present invention includes following steps, wherein, CMMB network and mobile communication network service platform be managing user information separately, comprises user key information, and manages mutual corresponding relation, both sides' information is offered user terminal jointly use.In reality is implemented, can mobile multimedia network, mobile network's user ID and user key information thereof be write place of safety in the card by third party card vendor, provide information to use by card to terminal.
(a) each business platform in the mobile multimedia network is provided to its service area by the program current cipher key information of its program stream that can provide and each program stream correspondence, and issue the ESG of its all program streams that can provide by each self-corresponding mobile network's business platform, wherein, the program stream of CMMB business platform broadcasting is through the program stream behind the encrypting program stream keys of this program stream correspondence;
(b) behind the user ESG that mobile communications network service node business platform issues with receiving its visit, if will initiate to the wherein request of certain program, then business request information is sent to above-mentioned visit ground mobile communications network service node business platform, wherein carry this user in the user ID of mobile media broadcasting network, at the service identification of the user ID of mobile communications network and the program of being asked;
(c) visit ground mobile communications network service node business platform this user that will receive sends to visit ground mobile media broadcasting network service node business platform in the user ID of mobile media broadcasting network and the service identification of being asked; After visit ground mobile media broadcasting network service node business platform is received, the information of home location of the business of inquiring about this user according to user ID and service identification respectively and being asked obtains this user's user key and the pairing business cipher key information of service identification in view of the above.
Visit ground mobile communications network service node business platform is inquired about in national user's mobile media broadcasting network routing table that preserve this locality, as inquire this locality according to user ID is not this user's ownership place, then initiate request to this user ascription area mobile media broadcasting network service node business platform ownership place mobile communications network service node business platform that inquires, this user of acquisition request is at the user key of mobile media broadcasting network, wherein, carry the user ID of this user in this request at mobile media broadcasting network; As inquire and local be this user's ownership place, then find the user key of this user's correspondence in this locality;
Visit ground mobile communications network service node business platform also inquires the business platform that this program is provided according to described service identification, as not being local, then initiates request, this program corresponding service key of acquisition request to the corresponding service platform;
(d) visit ground mobile multimedia network service node business platform is encrypted the business cipher key that obtains with the user key that obtains, and encrypted service key is sent to visit ground mobile communications network service node business platform;
(e) visit ground mobile communications network service node business platform according to terminal to this user of its transmission user ID at mobile communications network, in national user's mobile multimedia network routing table that preserve this locality, inquire about, as to inquire this locality be not this user's ownership place, then initiate request to the ownership place mobile network service node business platform of serving this user ascription area that inquires, this user of acquisition request is at the user key of mobile communications network, wherein, carry this user's mobile network user sign in this request; As inquire and local be this user's ownership place, then find the user key of this user's correspondence in this locality;
Certainly, this step (e) can be carried out in any step between above-mentioned steps (a) and following step (f).
(f) after mobile communications network visit ground service node business platform gets access to the business cipher key of encryption from above-mentioned CMMB-V, after encrypting this business cipher key once more, the user key that utilization gets access to sends to user terminal;
(g) after terminal receives, with two user keys on it (being the user key of CMMB network and the user key of mobile communications network) this business cipher key is decrypted respectively, and after with the business cipher key after the deciphering program current cipher key corresponding with this requested program of visit ground mobile multimedia network service node business platform broadcasting being decrypted, be decrypted with the program stream data of the program current cipher key after the deciphering again, finally obtain this program stream data requested program.
In a word, the present invention provides a kind of service security method of supporting roaming service in the UNE of mobile multimedia broadcasting service system and mobile communication system.The problem of service security when having solved the UNE roaming preferably.
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 of ordinary skill 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 (10)
1. a system that realizes mobile multi-media broadcasting service is characterized in that, comprising:
Visit ground mobile multimedia network service node business platform, ownership place mobile multimedia network service node business platform, visit ground mobile communications network service node business platform and ownership place mobile communications network service node business platform;
Described visit ground mobile multimedia network service node business platform is used for after the service request at certain program that receives the terminal initiation, the ownership place mobile multimedia network service node business platform of mobile multimedia network sign under corresponding this terminal according to this terminal of carrying in the described service request initiated request, first user key of the described terminal of acquisition request; Also be used for getting access to the corresponding service key according to the described requested program corresponding service sign that described service request is carried; After encrypting described business cipher key, described first user key that also is used for getting access to sends to described visit ground mobile communications network service node business platform;
Described ownership place mobile multimedia network service node business platform is used for after the cipher key acquisition request of carrying described mobile multimedia network sign that mobile multimedia network service node business platform is sent with receiving described visit, and the first corresponding user key of this mobile multimedia network sign is sent to described visit ground mobile multimedia network service node business platform;
Described visit ground mobile communications network service node business platform sends to described terminal after being used to utilize second user key of the described terminal that gets access to from ownership place mobile communications network service node business platform that described encrypted service key is encrypted once more;
Described ownership place mobile communications network service node business platform is used for after the cipher key acquisition request of carrying described mobile communications network sign that mobile communications network service node business platform is sent with receiving described visit, and the second corresponding user key of this mobile communications network sign is sent to described visit ground mobile communications network service node business platform.
2. the system as claimed in claim 1 is characterized in that,
Preserve described first user key and second user key on the described terminal;
Described terminal is used for after receiving described encrypted service key once more, with described first user key and second user key this business cipher key is decrypted, and after with the business cipher key after the deciphering program current cipher key corresponding with described requested program of described visit ground mobile multimedia network service node business platform broadcasting being decrypted, be decrypted with the program stream data of the program current cipher key after deciphering again described requested program.
3. system as claimed in claim 1 or 2 is characterized in that,
Preserve the corresponding relation of each mobile multimedia network sign and its ownership place mobile multimedia network service node business platform on the described visit ground mobile multimedia network service node business platform;
Described visit ground mobile multimedia network service node business platform is used for the mobile multimedia network sign of this terminal of carrying according to described service request, utilizes described corresponding relation to inquire the ownership place mobile multimedia network service node business platform of described terminal correspondence.
4. system as claimed in claim 1 or 2 is characterized in that,
Preserve the corresponding relation of each mobile communications network sign and its ownership place mobile communications network service node business platform on the described visit ground mobile communications network service node business platform;
Described visit ground mobile communications network service node business platform is used for the mobile communications network sign of this terminal of carrying according to described service request, utilizes described corresponding relation to inquire the ownership place mobile communications network service node business platform of described terminal correspondence.
5. system as claimed in claim 1 or 2 is characterized in that,
Described visit ground mobile multimedia network service node business platform also is used for after receiving described service request, after finding the business platform that described program is provided according to the service identification that wherein carries, to the described described program corresponding service of the business platform acquisition request key that described program is provided.
6. a method that realizes mobile multi-media broadcasting service is characterized in that, comprising:
Visit ground mobile multimedia network service node business platform is after the service request at certain program that receives the terminal initiation, the ownership place mobile multimedia network service node business platform of mobile multimedia network sign under corresponding this terminal according to this terminal of carrying in the described service request initiated request, first user key of the described terminal of acquisition request; Get access to the corresponding service key according to the described requested program corresponding service sign of carrying in the described service request; Send to visit ground mobile communications network service node business platform after with described first user key that gets access to described business cipher key being encrypted then, after second user key of the described terminal that is got access to from ownership place mobile communications network service node business platform by the mobile communications network service node business platform utilization of described visit ground is encrypted once more to described encrypted service key, send to described terminal.
7. method as claimed in claim 6 is characterized in that,
Preserve described first user key and second user key on the described terminal;
Described terminal is after receiving described encrypted service key once more, with described first user key and second user key this business cipher key is decrypted, and after with the business cipher key after the deciphering program current cipher key corresponding with described requested program of described visit ground mobile multimedia network service node business platform broadcasting being decrypted, be decrypted with the program stream data of the program current cipher key after deciphering again described requested program.
8. as claim 6 or 7 described methods, it is characterized in that,
Preserve the corresponding relation of each mobile multimedia network sign and its ownership place mobile multimedia network service node business platform on the described visit ground mobile multimedia network service node business platform;
Described visit ground mobile multimedia network service node business platform is the mobile multimedia network sign according to this terminal of carrying in the described service request, utilizes described corresponding relation to inquire the ownership place mobile multimedia network service node business platform of described terminal correspondence.
9. as claim 6 or 7 described methods, it is characterized in that,
Preserve the corresponding relation of each mobile communications network sign and its ownership place mobile communications network service node business platform on the described visit ground mobile communications network service node business platform;
Described visit ground mobile communications network service node business platform is the mobile communications network sign according to this terminal of carrying in the described service request, utilizes described corresponding relation to inquire the ownership place mobile communications network service node business platform of described terminal correspondence.
10. as claim 6 or 7 described methods, it is characterized in that,
Described visit ground mobile multimedia network service node business platform is meant according to getting access to the corresponding service key: described visit ground mobile multimedia network service node business platform is after receiving described service request, after finding the business platform that described program is provided according to the service identification that wherein carries, to the described described program corresponding service of the business platform acquisition request key that described program is provided.
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| CN2008101784519A CN101409595B (en) | 2008-11-26 | 2008-11-26 | System and method for implementing mobile multimedia broadcast service |
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| CN2008101784519A CN101409595B (en) | 2008-11-26 | 2008-11-26 | System and method for implementing mobile multimedia broadcast service |
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| CN101888628B (en) * | 2009-05-15 | 2014-11-05 | 中兴通讯股份有限公司 | Mobile multimedia broadcasting system and encryption method employed by same |
| CN102131194B (en) * | 2010-01-12 | 2014-12-10 | ***通信集团公司 | Method, device and system for acquiring service key and service platform equipment |
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