CN1756380A - The transmission method of the password indication information of a kind of multimedia broadcasting and multicast service - Google Patents
The transmission method of the password indication information of a kind of multimedia broadcasting and multicast service Download PDFInfo
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- CN1756380A CN1756380A CN 200410080253 CN200410080253A CN1756380A CN 1756380 A CN1756380 A CN 1756380A CN 200410080253 CN200410080253 CN 200410080253 CN 200410080253 A CN200410080253 A CN 200410080253A CN 1756380 A CN1756380 A CN 1756380A
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Abstract
Disclose the transmission method of the password indication information of a kind of multimedia broadcasting and multicast service, taken the problem that more system resources causes increasing system load to repeat to transmit password indication information in the solution prior art.This method comprises broadcasting and multicast service center is at first judged and utilize a stature to identify that to indicate be that the current password indication information that will transmit is for the first time transmission or follow-up re-transmission; If transmission for the first time, broadcasting and multicast service center labour contractor sign and password indication information are given subscriber equipment with transfer of data together; If follow-up re-transmission, broadcasting and multicast service center utilize this password indication information to adopt predetermined algorithm to calculate an actual check code, give subscriber equipment with data content transmission together with leader knowledge and check code then.Utilize method of the present invention, can effectively utilize system resource, reduce system load.
Description
Technical field
The present invention relates to multimedia broadcasting and multicast service (hereinafter to be referred as MBMS), particularly relate to the transmission method of a kind of password indication information among the MBMS.
Background technology
MBMS is formulating relevant criterion for it to carry out a standardized new business in the 3-G (Generation Three mobile communication system) partner program.The MBMS business is a kind of unidirectional point to the business of multipoint system (promptly broadcasting out multi-medium data from single data source is sent to a plurality of users through Network Transmission and receives).The maximum characteristics of this business are that it can effectively utilize Radio Resource and Internet resources.The MBMS business is mainly used in the wireless communication network system, as Wideband Code Division Multiple Access (WCDMA) communication system, global system for mobile communications etc.The transmission of business datum will be passed through basically among the MBMS: transmission in data source transmission, go-between transmission, the purpose cell null, user receive such plurality of processes.
Fig. 1 is a wireless communication system logical network equipment drawing that the MBMS business can be provided, and in fact MBMS has utilized general grouped wireless data service (hereinafter to be referred as GPRS) network as core transport network in the figure.
As shown in Figure 1, broadcasting and multicast service center (hereinafter to be referred as BM-SC) are the data sources that sends the MBMS business datum; Gateway GPRS Support Node (hereinafter to be referred as GGSN) is used for being connected of GRPS network and external network (as the INTERNET network); Gateway GPRS Support Node connects BM-SC and the MBMS data is sent to specific Serving GPRS Support Node (hereinafter to be referred as SGSN) in the MBMS business; CBC is the data source of Cell Broadcast CB, by with CBC and BM-SC interconnection, makes CBC that MBMS can be provided professional declaration function in MBMS; SGSN is used for UE carried out that access control and mobile management send to specific base stations controller (hereinafter to be referred as BSC) to the MBMS data of coming from GGSN simultaneously or radio-cell controller (hereinafter to be referred as RNC) goes; BSC/RNC is used for controlling one group of base station and multi-medium data is sent to specific base stations; Aerial data transmission channel is set up for the MBMS business of certain sub-district in base station (hereinafter to be referred as BTS/Node-B) under the control of RNC; Subscriber equipment (hereinafter to be referred as UE) is the terminal equipment that receives the MBMS data.
Provided the MBMS business among Fig. 2 and be established to all processes that end user is left from business declaration, user's adding, service announcements, radio bearer.
In step 001, subscribe to the contact of setting up between user and the service provider, authorized user can receive relevant MBMS service.
In step 002, the business that professional declaration notifies the user to provide.For example, system in the afternoon 7:00 relay a basketball match in areas of Beijing.
In step 003, add the expression user and add a group, promptly the user tell network he or she be ready this multicast service.
In step 004, chapters and sections begin to represent that BMSC has been ready to will begin service data transmission at once.Chapters and sections begin to trigger 004 following multicast bear and set up.A MBMS business may be by forming as doing a chapters and sections, and for example, the Basketball Match that system will relay can be divided into four chapters and sections according to the process of match; And another football match meeting that system will relay is divided two chapters and sections of first and second half according to the process of match.
In step 005, the MBMS multicast bear is established as the MBMS transfer of data and sets up Internet resources.
In step 006, the MBMS notice is informed the MBMS transfer of data that the user will carry out at once.
In step 007, data transfer representation MBMS business data transmission is to user's process.
In step 008, chapters and sections finished expression BMSC decision and do not have transfer of data again in following a period of times.When chapters and sections finished, the MBMS multicast bear was deleted, and Internet resources are released.For example, when football match first half finishes, the corresponding chapters and sections that the system that relays this match also can winding-up.
In step 009, leave correspondingly with the adding of step 003, the expression user will leave a group, does not promptly rethink to receive certain professional data.
For the consideration of aspects such as charging and safety, the transfer of data in the MBMS business generally all will be encrypted, and is only meaningful to the user that those can receive to guarantee data.Because MBMS is the business of a kind of point to multiple spot, in order to effectively utilize Radio Resource and Internet resources, receiving the one group of user who serves with a kind of MBMS for all, the used password of MBMS data encryption is the same.Like this, the user just needn't need to obtain different passwords because of moving in the service range of this MBMS business.Generally, BMSC carries out generation, management and the distribute work of password.
Usually for for the purpose of the safety more, prevent the leakage of password, BMSC often change data content encrypts used password, and subscriber equipment just need know which password of employing at quarter comes enciphered data is decrypted at a time like this.This password indication information that is used for data decryption is to be transferred to the user by multicast mode together with the ciphered data content.Usually consider that from the angle of chargeing each password can be used certain hour.Like this, at this moment between in, password indication information remains unchanged.
Radio signal can decay when transmitting in air, and therefore, for mobile communication system, because user's mobility and independence, subscriber equipment when receiving data data may take place.For common general service, subscriber equipment can Request System retransmit the data of losing after the discovery loss of data.But for MBMS was professional, its business datum content did not retransmit at the individual consumer, and therefore, in order to reduce the influence that loss of data causes, in the operating period of a password, password indication information can repeatedly transmit with multicast mode again.
Summary of the invention
In a wireless communication network system, may there be a plurality of different MBMS business simultaneously; For the consideration of chargeing, the password that these MBMS business are adopted may be different fully.In the MBM business, password indication information is made up of network identity (hereinafter to be referred as Network ID), cipher code set sign (hereinafter to be referred as Key Group ID), the professional cipher mark (hereinafter to be referred as MSK ID) of MBMS and MBMS data cryptogram sign (hereinafter to be referred as MTK ID) this four part.Wherein, long 3 bytes of Network ID are made of mobile client national code (hereinafter to be referred as MCC) and mobile network No. (hereinafter to be referred as MNC).Key Group ID, MSK ID and MTK ID length all are 2 bytes.A complete password indication information can take 9 bytes, and its length is long.
And in the operating period of a password, password indication information can repeatedly transmit again.Like this, each all complete repeating transmitted password indication information and will be taken more system resources, increases system load.
In order to effectively utilize system resource, reduce system load, can consider to adopt a kind of transmission method of new password indication information.BMSC at first judges and utilize a stature to identify indicates is that the current password indication information that will transmit is thereby that different contents is transmitted in transmission for the first time or follow-up re-transmission.If complete password indication information is then transmitted in transmission for the first time.If follow-up re-transmission, then transmission is for short check code (hereinafter to be referred as the MAC) information of verification use.And subscriber equipment also adopts different subsequent operations according to receiving that leader is known.
Therefore, the purpose of this invention is to provide the transmission method of the password indication information of a kind of multimedia broadcasting and multicast service, comprise step: broadcasting and multicast service center is at first judged and utilize a stature to identify that to indicate be that the current password indication information that will transmit is for the first time transmission or follow-up re-transmission; If transmission for the first time, broadcasting and multicast service center labour contractor sign and password indication information are given subscriber equipment with transfer of data together; If follow-up re-transmission, broadcasting and multicast service center utilize this password indication information to adopt predetermined algorithm to calculate an actual check code, give subscriber equipment with data content transmission together with leader knowledge and check code then.
In addition, be transmission for the first time if leader is known indication: the password indication information that receives is preserved and used to subscriber equipment.If it is follow-up re-transmission that leader is known indication: subscriber equipment adopts described predetermined algorithm to calculate an expection check code according to the password indication information of current use; Relatively this expection check code and the actual check code that receives, and when comparative result was consistent, subscriber equipment continued to use current password indication information.
In addition, if the expection check code is inconsistent with the comparative result of the actual check code that receives, subscriber equipment is reported " password indication information is inconsistent " indication to broadcasting and multicast service center.After broadcasting and multicast service center are received " password indication information is inconsistent " message from UE, with password indication information complete again be transferred to this UE individually.
By the transmission method of password indication information of the present invention, make it possible to transmission method crossing at password indication information, effectively utilize system resource, reduce system load.
Description of drawings
Fig. 1 is the wireless communication system logical network equipment drawing of MBMS business;
Fig. 2 is the business process map of MBMS multicast service;
Fig. 3 has described the operating procedure the flow chart how BMSC that has used one embodiment of the present of invention generated and transmitted password indication information.
How the UE that Fig. 4 has described corresponding present embodiment receives and handles the operating procedure flow chart of received password indication information.
The BMSC that Fig. 5 has described corresponding present embodiment is receiving from the operating procedure flow chart after the inconsistent indication of the password indication information of certain UE.
Embodiment
The transmission method of the password indication information of a kind of multimedia broadcasting and multicast service: BMSC at first judges and utilizes a stature to identify and indicate is that the current password indication information that will transmit is transmission or follow-up re-transmission for the first time.If transmission for the first time, BMSC labour contractor's sign and password indication information go down with transfer of data together.If follow-up re-transmission, BMSC utilizes this password indication information to adopt certain algorithm computation to go out the check code of a reality, then leader knowledge and check code is gone down with data content transmission together.
After subscriber equipment is received information from BMSC, know according to leader and to adopt different operations.If it is transmission for the first time that leader is known indication, the password indication information that receives is then preserved and used to subscriber equipment.If it is follow-up re-transmission that leader is known indication, subscriber equipment adopts the algorithm computation identical with BMSC to go out an expection check code according to the password indication information of current use, and the check code of the reality that it is brought and receives compares.If comparative result unanimity, subscriber equipment continue to use current password indication information.
The present invention relates to a kind of transmission method of password indication information; In fact, it utilizes a stature to identify to indicate is that the current password indication information that will transmit is transmission or follow-up re-transmission for the first time, and the method for thereupon transmitting different contents reaches the purpose of saving system resource, reducing system load.With reference to appended drawing, one embodiment of the present of invention have been provided below.Too tediously long for fear of the description that makes this patent, in the following description, omitted the detailed description of function that the public is known or device etc.
Fig. 3 has described the operating procedure the flow chart how BMSC that has used one embodiment of the present of invention generated and transmitted password indication information.
In step 301, BMSC produces the password indication information that needs broadcast transmitted.This password indication information has comprised network identity (Network ID), cipher code set sign (Key Group ID), the professional cipher mark (MSK ID) of MBMS and MBMS data cryptogram sign four parts such as (MTK ID).
In step 302, BMSC judges that the password indication information that needs transmission is transmission or follow-up re-transmission for the first time.If transmission for the first time, then execution in step 302; Otherwise execution in step 305.
In step 303, BMSC produces leader and knows " 1 ", is to be transmitted for the first time to indicate this password indication information.The length that leader is known is 1 bit.
In step 304, BMSC knows leader and this password indication information weave in, forms interweaving information.
In step 305, BMSC produces leader and knows " 0 ", is transmitted to indicate this password indication information.The length that leader is known is 1 bit.
In step 306, BMSC utilizes this password indication information, and the HASH algorithm according to certain calculates the expection check digit.HASH algorithm in the present embodiment can be common various algorithms, as SHA-1 algorithm, MD5 algorithm etc.
In step 307, BMSC knows leader and expection check digit weave in, forms interweaving information.
In step 308, BMSC mixes interweaving information and data content.
In step 309, mixed data are transmitted in the mode of broadcasting.
How the UE that Fig. 4 has described corresponding present embodiment receives and handles the operating procedure flow chart of received password indication information.
In step 401, user equipment (UE) carries out Data Receiving.
In step 402, user equipment (UE) carries out data processing, obtains leader and knows.
In step 403, UE knows according to the leader of 1 bit that to be designated as transmission for the first time still be follow-up re-transmission and carry out different operations respectively.If head is designated " 1 ", then the UE execution in step 404; Otherwise execution in step 406.
In step 404, UE carries out follow-up data processing, obtains complete password indication information.
In step 405, UE preserves and uses the complete password indication information that receives.
In step 406, UE adopts the HASH algorithm identical with BMSC according to presently used password indication information, calculates actual check digit.
In step 407, UE relatively calculates the check digit that actual check bit sum receives, and carries out different subsequent steps according to the difference of comparative result.If the comparative result unanimity then carry out step 408; Otherwise, carry out step 409.
In step 408, UE continues to use currently used password indication information.
In step 409, UE reports the inconsistent indication of password indication information to BMSC, request BMSC with password indication information complete again be transferred to this subscriber equipment individually.
In step 410, UE reception, preservation and use are from the independent complete password indication information that is transferred to this UE of BMSC.
In step 411, the UE indication information that accesses to your password carries out follow-up data processing.
The BMSC that Fig. 5 has described corresponding present embodiment is receiving from the operating procedure flow chart after the inconsistent indication of the password indication information of certain UE.
In step 501, BMSC is in " password indication information is inconsistent " information of receiving from certain UE.
In step 502, BMSC adopts existing method, and this UE is carried out authentication.
In step 503, BMSC adopts existing method, carries out the distribution of resource for this reason.
In step 504, BMSC generates complete password indication information.
In step 505, BMSC adopts existing method, and the complete password indication information that is generated is passed to this UE.
Though embodiments of the invention have been done detailed explanation above, those of ordinary skill in the art can make amendment, and does not break away from thought of the present invention and essence.
Claims (7)
1. the transmission method of the password indication information of multimedia broadcasting and multicast service comprises step:
Broadcasting and multicast service center is at first judged and utilize a stature to identify that to indicate be that the current password indication information that will transmit is for the first time transmission or follow-up re-transmission;
If transmission for the first time, broadcasting and multicast service center labour contractor sign and password indication information are given subscriber equipment with transfer of data together;
If follow-up re-transmission, broadcasting and multicast service center utilize this password indication information to adopt predetermined algorithm to calculate an actual check code, give subscriber equipment with data content transmission together with leader knowledge and check code then.
2. by the described transmission method of claim 1, it is characterized in that, is transmission for the first time if leader is known indication:
The password indication information that receives is preserved and used to subscriber equipment.
3. by the described transmission method of claim 1, it is characterized in that, is follow-up re-transmission if leader is known indication:
Subscriber equipment adopts described predetermined algorithm to calculate an expection check code according to the password indication information of current use;
Relatively this expection check code and the actual check code that receives, and when comparative result was consistent, subscriber equipment continued to use current password indication information.
4. by the described transmission method of claim 3, it is characterized in that if the expection check code is inconsistent with the comparative result of the actual check code that receives, subscriber equipment is reported " password indication information is inconsistent " indication to broadcasting and multicast service center.
5. by the described transmission method of claim 4, it is characterized in that, after broadcasting and multicast service center are received " password indication information is inconsistent " message from subscriber equipment, with password indication information complete again be transferred to this subscriber equipment individually.
6. by the described transmission method of claim 1, it is characterized in that described leader is known by broadcasting and multicast service center generation, length is 1 bit.
7. by claim 2 or 3 described transmission methods, it is characterized in that the length of described actual check code and described expection check code is 7 bits.
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| CN 200410080253 CN1756380A (en) | 2004-09-28 | 2004-09-28 | The transmission method of the password indication information of a kind of multimedia broadcasting and multicast service |
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| CN 200410080253 CN1756380A (en) | 2004-09-28 | 2004-09-28 | The transmission method of the password indication information of a kind of multimedia broadcasting and multicast service |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617657A (en) * | 2019-01-22 | 2019-04-12 | 新华三技术有限公司 | A kind of message processing method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617657A (en) * | 2019-01-22 | 2019-04-12 | 新华三技术有限公司 | A kind of message processing method and device |
| CN109617657B (en) * | 2019-01-22 | 2021-07-30 | 新华三技术有限公司 | Message processing method and device |
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