CN1728843A - Prevent that password update from causing the method that air interface is congested - Google Patents
Prevent that password update from causing the method that air interface is congested Download PDFInfo
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- CN1728843A CN1728843A CN 200410070769 CN200410070769A CN1728843A CN 1728843 A CN1728843 A CN 1728843A CN 200410070769 CN200410070769 CN 200410070769 CN 200410070769 A CN200410070769 A CN 200410070769A CN 1728843 A CN1728843 A CN 1728843A
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Abstract
A kind of password update that prevents causes the method that air interface is congested, comprises step: BNSC calculates according to number of users and reduces the congested Control Parameter of air interface; By downstream node this Control Parameter and " the MBMS new password can be downloaded " message are sent to the user; The user sends " new password request information according to this Control Parameter.Whether the present invention can send " request of MBMS new password " signaling by the control user in some time periods, to reduce the congested of air interface.
Description
Technical field
The present invention relates to multimedia broadcasting and multicast service (hereinafter to be referred as MBMS), particularly relate in a kind of MBMS new password downloading process among the MBMS, MBMS user asks new password can cause the congested problem of air interface simultaneously.
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 terminal 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.
001 subscribes to the contact of setting up between user and the service provider, and authorized user can receive relevant MBMS service.
The business that 002 professional declaration notifies the user to provide.For example, system in the afternoon 7:00 relay a football match in areas of Beijing.
003 adds the expression user adds a group, promptly the user tell network he or she be ready this multicast service.
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.
The 005MBMS multicast bear is established as the MBMS transfer of data and sets up Internet resources.
The 006MBMS notice is informed the MBMS transfer of data that the user will carry out at once.
007 data transfer representation MBMS business data transmission is to user's process.
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.
009 leaves and adds correspondingly with 003, and 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.
Under a lot of situations, the MBMS data cryptogram should often be upgraded.For example, when a user no longer receives current MBMS service and when initiatively leaving, when perhaps network thinks that because of reasons such as chargings this user should not accept current MBMS service again and makes its passive leaving, still can utilize old group password and continue to receive the MBMS service for fear of this user, notify the every other user in the group to obtain this new data cryptogram after BMSC just need upgrade the data password.The user will initiate up signaling and obtain new password after receiving the message that new password can download.
In existing systems, BMSC can notify all users with the load mode of broadcasting by the ready prepd message of new password after having produced new MBMS data cryptogram.After all users received this message, just the back sent the upstream request signaling, required to download new password.If number of users is a lot, initiate up signaling simultaneously, can cause the congested of air interface.
Summary of the invention
The purpose of this invention is to provide a kind of password update that prevents and cause the method that air interface is congested, so that reduce the congested of air interface.
According to an aspect of of the present present invention, a kind of password update that prevents causes the method that air interface is congested, comprises step:
BNSC calculates according to number of users and reduces the congested Control Parameter of air interface;
By downstream node this Control Parameter and " the MBMS new password can be downloaded " message are sent to
The user;
The user sends " new password request information according to this Control Parameter.
According to another aspect of the present invention, a kind of password update that prevents causes the method that air interface is congested, comprises step:
SGSN calculates according to number of users and reduces the congested Control Parameter of air interface;
By downstream node this Control Parameter and " the MBMS new password can be downloaded " message are sent to the user;
The user sends " new password request information according to this Control Parameter.
Whether the present invention can send " request of MBMS new password " signaling by the control user in some time periods, to reduce the congested of air interface.
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 used system works flow process figure of the present invention;
Fig. 4 is the action flow chart of UE;
Fig. 5 is that Control Parameter is the embodiment of probable value;
Fig. 6 is that Control Parameter is the embodiment of grouping information;
Fig. 7 is the embodiment that control information is produced by BMSC;
Fig. 8 is the embodiment that control information is produced by SGSN.
Embodiment
According to an aspect of the present invention, BMSC determines the Control Parameter of a up signaling of control, sends to following node together with " the professional password of MBMS (to call new password in the following text) can be downloaded " message then.After the BMSC 304 new new passwords of Fig. 3 produced, by its downstream node GGSN 303, SGSN 302, and RNC 301 sends " the MBMS new password can be downloaded " message and gives MBMS user 300.BMSC 304 comprises the unit 313 of a signaling control, be used for calculating the Control Parameter of up signaling, Unit 314, originally calculate new password, after new new password produces, Unit 314 and Unit 313 carry out intercommunication, and Unit 314 obtain the Control Parameter of the up signaling of Unit 313 calculating, then the Control Parameter of up signaling and " the MBMS new password can be downloaded " message are sent to downstream node together.
According to a further aspect in the invention, after SGSN receives the message of " the MBMS new password can be downloaded ", according to current MBMS number of users, determine the Control Parameter of a up signaling of control, then and " new password can be downloaded " message together, forms new message, to the transmission of following node.After Unit 114 among the BMSC 304 of Fig. 3 produce new new password, " the MBMS new password can be downloaded " sent to the node GGSN 303 in downstream, after GGSN receives this message, this message is sent to the node SGSN 302 in downstream.SGSN preserves this message, the control unit 312 of notice SGSN inside, control unit 312 calculates the Control Parameter of a up signaling according to the MBMS number of users, and this message and ' the MBMS new password can be downloaded " send to MBMS user 300 by RNC 301 together.
Fig. 4 is that UE sends the " action flow chart of MBMS new password request information according to Control Parameter.
The user is in idle pulley 401, receives the message of " the MBMS new password can be downloaded ", when receiving this message, also receives the Control Parameter of up signaling, and UE preserves this Control Parameter.
Send the probable value of up signaling if this Control Parameter is UE, UE carries out 403 steps, in 404 steps, UE produces a random number, if this random number less than probable value, determines to send up signaling, carry out 406 steps, UE sends up " MBMS new password request information.Otherwise UE waits for that next one section turn-on time judges whether to send " new password request " signaling once more, and the processing of this time period finishes.
If this Control Parameter is a grouping information, carry out 402 steps, get remainder behind the grouping number on the UE basis IMSI mould of oneself, calculate own affiliated group, such as, being divided into four groups, the IMSI of UE is * * * * * * 8,4 get remainder on the IMSI mould, are 0, and then the user belongs to first group.The IMSI of UE is * * * * * * 9, and 4 get remainder on the IMSI mould, are 1, and then the user belongs to second group, and the like.
Judge in 404 steps whether this time period can send " request of MBMS new password " information.The standard of judging can according to the moment of receiving " the MBMS new password can be downloaded " as benchmark, if the user belongs to first group, then first after the user is receiving " the MBMS new password can be downloaded " inserts constantly, can send " MBMS new password request information.Perhaps the CFN according to UE oneself calculates the moment that can send up signaling.Because each user's CFN is different, also can reach the purpose of disperseing up signaling.Judge the moment that each group can send with the remainder of CFN and packet count.Such as, packet count is 4, and the IMSI of UE is * * * * * * 8, and then the user belongs to first group, can send (n=0to 64) in the moment of CFN=4*n.The IMSI of UE is * * * * * * 9, and then the user belongs to second group, can send in the moment of CFN=4*n+1.And the like.
If can send, UE carries out 407 steps.Send " request of MBMS new password ", otherwise UE waits for that next one section turn-on time judges whether to send " request of MBMS new password " signaling once more that the processing of this time period finishes.
Embodiment
Fig. 5 is that BMSC or SGSN produce the embodiment that a probable value is controlled the possibility of UE transmission " request of MBMS new password " signaling according to number of users.Suppose that the MBMS number of users is m, greater than predetermined value K1, the probability of the transmission " request of MBMS new password " of new new password correspondence is p1, if m greater than predetermined value K2, the probability of the transmission " request of MBMS new password " of new new password correspondence is p1.
Fig. 6 is that BMSC or SGSN divide MBMS user in groups according to number of users, and different groups sends " request of MBMS new password " in the different moment.All users receive " the MBMS new password can be downloaded " message constantly at t0 after, the user is according to packet count on the IMSI mould of oneself, calculates oneself to belong to which group.Group according to own place sends " request of MBMS new password " in the different moment then.The example of Fig. 6 has been a branch four groups.The user of group one sends " request of MBMS new password " earlier constantly at t1, if do not meet with a response, the user of next period t2 group one will wait for that the user of group two sends " request of MBMS new password ".The user of group three sends " request of MBMS new password " constantly at t3.Group four sends " request of MBMS new password " constantly at t4.If the user of group one does not meet with a response, constantly can send " request of MBMS new password " once more at t5.
Fig. 7 is that BMSC produces and send the embodiment that control UE sends the Control Parameter of " request of MBMS new password " signaling.BMSC sends 701 message " the MBMS new password can be downloaded ", and this message comprises send control UE to send the Control Parameter of " request of MBMS new password " signaling, such as is a probable value, or the information of grouping.Pass through downstream node GGSN then, SGSN, RNC sends to the user.
Fig. 8 is that SGSN produces and send the embodiment that control UE sends the Control Parameter of " request of MBMS new password " signaling.BMSC sends " the MBMS new password can be downloaded " message and gives downstream node GGSN, SGSN.After SGSN receives this message, calculate the Control Parameter that a control UE sends " request of MBMS new password " signaling according to the number of users that adds MBMS.Forming new " the MBMS new password can a be downloaded " message then sends out by downstream node RNC and sends to the user.
Claims (8)
1. one kind prevents that password update from causing the method that air interface is congested, comprises step:
BNSC calculates according to number of users and reduces the congested Control Parameter of air interface;
By downstream node this Control Parameter and " the MBMS new password can be downloaded " message are sent to the user;
The user sends " new password request information according to this Control Parameter.
2. by the described method of claim 1, it is characterized in that Control Parameter is a probable value.
3. by the described transmission method of claim 1, it is characterized in that Control Parameter is a grouping information.
4. by the described method of claim 2, it is characterized in that new message of Control Parameter and " the MBMS new password can be downloaded " message composition.
5. one kind prevents that password update from causing the method that air interface is congested, comprises step:
SGSN calculates according to number of users and reduces the congested Control Parameter of air interface;
By downstream node this Control Parameter and " the MBMS new password can be downloaded " message are sent to the user;
The user sends " new password request information according to this Control Parameter.
6. by the described method of claim 5, it is characterized in that Control Parameter is a probable value.
7. by the described transmission method of claim 5, it is characterized in that Control Parameter is a grouping information.
8. by the described method of claim 7, it is characterized in that new message of Control Parameter and " the MBMS new password can be downloaded " message composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200410070769 CN1728843A (en) | 2004-07-26 | 2004-07-26 | Prevent that password update from causing the method that air interface is congested |
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| CN 200410070769 CN1728843A (en) | 2004-07-26 | 2004-07-26 | Prevent that password update from causing the method that air interface is congested |
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| CN1728843A true CN1728843A (en) | 2006-02-01 |
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| CN 200410070769 Pending CN1728843A (en) | 2004-07-26 | 2004-07-26 | Prevent that password update from causing the method that air interface is congested |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007112650A1 (en) * | 2006-03-30 | 2007-10-11 | Huawei Technologies Co., Ltd. | System, method and bm-sc for mbms service |
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- 2004-07-26 CN CN 200410070769 patent/CN1728843A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007112650A1 (en) * | 2006-03-30 | 2007-10-11 | Huawei Technologies Co., Ltd. | System, method and bm-sc for mbms service |
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