CN102111904A - CDMA BS system and message transmission method thereof - Google Patents
CDMA BS system and message transmission method thereof Download PDFInfo
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- CN102111904A CN102111904A CN2011100482034A CN201110048203A CN102111904A CN 102111904 A CN102111904 A CN 102111904A CN 2011100482034 A CN2011100482034 A CN 2011100482034A CN 201110048203 A CN201110048203 A CN 201110048203A CN 102111904 A CN102111904 A CN 102111904A
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Abstract
The invention discloses a code division multiple access (CDMA) base station (BS) system and a message transmission method thereof. The method comprises the following steps of: switching a user terminal to a 1x BS under an identical packet control function (PCF) from a D0 access network (AN); sending a notification message for informing the user terminal to establish and/or release data service in the 1x BS to the D0 AN by the PCF, wherein packet data service node (PDSN) address information currently selected by the PCF is carried in the notification message for informing the user terminal to establish the data service in the 1x BS; and receiving the notification message by the D0 AN, and updating the PDSN address information which is locally saved and corresponds to the user terminal according to the notification message. By the method, the problem of abnormal interaction among the 1x BS, the D0 AN and the PDSN during changes on the data services between the 1x BS and the D0 AN under the identical PCF is solved, and the stability of a system is improved.
Description
Technical field
The present invention relates to field of mobile communication, relate in particular to the transmission method of a kind of code division multiple access (Code Division Multiple Access abbreviates CDMA as) base station system and message thereof.
Background technology
At present, commercial cdma base station system (for example, the CDMA2000 base station system) is supported CDMA 1x and two kinds of data services of EVDO simultaneously, and a lot of sub-districts have 1x to cover simultaneously, also has DO to cover.So generally speaking cdma base station system is the 1x Access Network, be called base station (Base Station on the agreement, be called for short BS, hereinafter referred to as 1x BS), be again the EVDO Access Network, be called access network (Access Network is called for short AN, hereinafter referred to as DOAN) on the agreement.
Fig. 1 is the connection diagram according to network element in the cdma system of correlation technique, as shown in Figure 1, according to describing among the 3GPP2 protocol specification A.S0008 (AN realizes the Session controlled function), Packet Control Function (Packet Control Function, be called for short PCF), can connect 1xBS separately, perhaps connect DOAN separately, also can connect 1xBS and DOAN simultaneously.
In CDMA 1x agreement the inside, the user is called as travelling carriage (Mobile Station is called for short MS), and in EVDO agreement the inside, the user is called as access terminal (Access Terminal is called for short AT), and unification uses access terminal (being AT) to describe below.
Smoothly move between different base station for making to access terminal, and it is continuous to keep data service, must carry out handover configurations between the dissimilar CDMA base station system so, and select same group data service node (Packet Data Service Node is called for short PDSN) for the user between the assurance different base station.
For EVDO, switch by interfaces such as A13, A16, A17 between the different AN.Wherein, A13 is that (Dormant Handoff) switched in dormancy, and A16 switches (Active Handoff) for activating.Fig. 2 is the schematic diagram that accesses terminal and switch between the dissimilar CDMA base station system according to correlation technique, as shown in Figure 2, under same PCF, take place between 1x BS and the DO AN how to handle when data service changes for a terminal use, in prior protocols, correspondingly describe.But, inventor's discovery, in this case, because source DOAN can't preserve correct PDSN address, so in the time of can causing the user to switch to target side AN (that is, 1x BS), the PDSN address that A13 and A16 interface transmit produces mistake.Concrete scene is as follows:
1) user discharges after source DO AN carries out data service foundation then.Because of certain reason (such as, sub-district DO dropout), the user inserts the line data business of going forward side by side at source 1x BS, and PCF can select a PDSN set up data service according to the principle of load sharing.At this moment, the PDSN address of preserving among the source DO AN may not be the PDSN address that the user is just inserting under 1x BS this moment.So, switching under the target side DOAN the user, the PDSN address that gets access to by A13 and A16 may be wrong, can cause data service to be interrupted like this.
2) user is after source DO AN carries out data service and sets up, and carries out data service because of certain reason (such as, part sub-district DO dropout) can switch to source 1x BS, discharged then.At this moment, it is invalid this PDSN address should to be set in the session information of source DO AN.So, switching to when calling out again under the target side DO AN the user, the PDSN address that gets access to by A13 is wrong, can cause target side PCF to reselect a suitable PDSN for the user according to the principle of load sharing like this.
Summary of the invention
Main purpose of the present invention is to provide the transmission plan of message in a kind of cdma base station system, in when, data service taking place between the 1x BS and DO AN under the above-mentioned same PCF change to solve at least with PDSN unusual problem alternately.
To achieve these goals, according to an aspect of the present invention, provide the transmission method of message in a kind of cdma base station system.
Transmission method according to message in the cdma base station system of the present invention may further comprise the steps: user terminal switches to 1x BS under the same Packet Control Function PCF from DO AN; PCF sends to DO AN and is used for informing user terminal set up and/or discharged data service at 1x BS notification message, wherein, be used for notifying the terminal use in 1x BS sets up the notification message of data service, to carry the group data service node PDSN address information of PCF current selected; DO AN receives this notification message, upgrades the local PDSN address information corresponding with user terminal of preserving according to this notification message.
Further, send to DO AN at PCF and to be used for informing user terminal and to set up at 1x BS under the situation of notification message of data service, DO AN upgrades the local PDSN address information corresponding with user terminal of preserving according to notification message and comprises: DO AN upgrades the local PDSN address information corresponding with user terminal of preserving according to the PDSN address information of carrying in this notification message.
Further, PCF sends to DO AN and is used for before informing user terminal sets up the notification message of data service at 1x BS, this method also comprises: PCF selects a PDSN according to the load sharing principle, and sets up the request message of data service to selected PDSN transmission user terminal in 1x BS; Selected PDSN sends user terminal to PCF and set up the message of data service success in 1x BS.
Further, selected PDSN is to PCF transmission user terminal is set up the message of data service success in 1x BS after, and this method also comprises: PCF receives the user terminal that sends from selected PDSN and set up the message of data service success in 1x BS; Under the situation of data service for the data service of activation, PCF sends user terminal and sets up message being connected of selected PDSN to 1x BS; Be that PCF sends the connection release message of user terminal and selected PDSN under the situation of data service of dormancy to 1x BS in data service.
Further, be used for notifying the terminal use at PCF under the situation of the notification message of 1x BS release data service to DO AN transmission, DO AN upgrades the local PDSN address information corresponding with user terminal of preserving according to notification message and comprises: DO AN deletes the PDSN address information corresponding with user terminal that preserve this locality; Perhaps the PDSN address information corresponding with user terminal of DO AN this locality preservation is set to sky.
Further, PCF sends to DO AN and was used for informing user terminal before the notification message of 1x BS release data service, and this method also comprises: PCF receives the message that has discharged data service from the indicating user terminal of network side in 1x BS; And PCF sends the connection Release complete of the user terminal PDSN corresponding with it to 1x BS.
To achieve these goals, according to a further aspect in the invention, also provide a kind of cdma base station system.
According to cdma base station system of the present invention, comprise 1x BS, DO AN and PCF, wherein, 1x BS and DO AN are under same PCF, and 1x BS comprises: first receiver module is used to receive user terminal switches to 1x BS from DO AN switching message; PCF comprises: sending module, be used for sending informing user terminal set up and/or discharged data service at 1x BS notification message, wherein, carry the group data service node PDSN address information of PCF current selected in the notification message of notifying the terminal use in 1x BS, to set up data service; DO AN comprises: second receiver module is used to receive the notification message from PCF; And update module, be used for upgrading the local PDSN address information corresponding of preserving with user terminal according to this notification message.
Further, update module also is used for sending to DO AN at PCF and is used for informing user terminal and sets up at 1x BS under the situation of notification message of data service, upgrades the local PDSN address information corresponding with user terminal of preserving according to the PDSN address information of carrying in this notification message.
Further, update module also is used for being used to notify the terminal use at PCF under the situation of the notification message of 1x BS release data service to DO AN transmission, the local PDSN address information corresponding with user terminal of preserving of deletion; Perhaps the PDSN address information corresponding with user terminal of this locality preservation is set to sky.
Further, sending module also is used for sending the connection Release complete of the user terminal PDSN corresponding with it to 1x BS receiving indicating user terminal from network side after 1x BS has discharged the message of data service.
By the present invention, employing is user terminal switches to 1x BS under the same PCF from DO AN after, under 1x BS, use or the mode of relevant information when discharging data service by this user terminal of PCF notice DO AN, solved when data service taking place between the 1x BS and DOAN under the same PCF changing unusual problem alternately, improved the stability of system with PDSN.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the connection diagram according to network element in the cdma system of correlation technique;
Fig. 2 is the schematic diagram that accesses terminal and switch between the dissimilar CDMA base station system according to correlation technique;
Fig. 3 is the flow chart according to the transmission method of message in the cdma base station system of the embodiment of the invention;
Fig. 4 is the structural representation according to the cdma base station system of the embodiment of the invention;
Fig. 5 is a flow chart of setting up the 1x activating data service according to the user of the embodiment of the invention;
Fig. 6 is a flow chart of setting up 1x dormant data business according to the user of the embodiment of the invention; And
Fig. 7 is the flow chart that discharges data service according to the 1x user of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
According to the embodiment of the invention, provide the transmission method of message in a kind of cdma base station system.Fig. 3 is the flow chart according to the transmission method of message in the cdma base station system of the embodiment of the invention, and as shown in Figure 3, this method may further comprise the steps:
Step S302, user terminal switches to 1x BS under the same PCF from DOAN;
Step S304, PCF sends to DO AN and is used for informing user terminal set up and/or discharged data service at 1x BS notification message, wherein, be used for notifying the terminal use in 1x BS sets up the notification message of data service, to carry the PDSN address information of PCF current selected; And
Step S306, DOAN receive this notification message, upgrade the local PDSN address information corresponding with user terminal of preserving according to this notification message.
Pass through above-mentioned steps, employing is user terminal switches to 1x BS under the same PCF from DO AN after, under 1x BS, use or the mode of relevant information when discharging data service by this user terminal of PCF notice DO AN, solved when data service taking place between the 1x BS and DO AN under the same PCF changing unusual problem alternately, improved the stability of system with PDSN.
Preferably, step S304 sends to DO AN at PCF and is used for informing user terminal and sets up at 1x BS under the situation of notification message of data service, and DO AN can upgrade the local PDSN address information corresponding with user terminal of preserving according to the PDSN address information of carrying in the notification message.Can improve the accuracy of system like this.
For example, DO AN can be the PDSN address of carrying in the above-mentioned notification message from PCF that receives with the PDSN address change corresponding with user terminal of this locality preservation.
Preferably, before step S304, PCF can select a PDSN according to the load sharing principle, and sets up the request message of data service to selected PDSN transmission user terminal in 1x BS; Selected PDSN sends user terminal to PCF and set up the message of data service success in 1x BS.For example, the user terminal that receives arrival 1x BS at PCF is set up the request message of data service, and PCF selects a PDSN according to current actual conditions, and transmits user terminal to this PDSN and set up the request message of data service under 1x BS.This method makes PCF select to set up the required PDSN of data service according to actual conditions, thereby the realization user terminal also can be set up the purpose of data service in 1x BS, improved the flexibility and the disposal ability of system.
Preferably, selected PDSN is to PCF transmission user terminal is set up the message of data service success in 1x BS after, and PCF receives the user terminal that sends from selected PDSN and set up the message of data service success in 1x BS; Under the situation of above-mentioned data service for the data service of activation, PCF can send user terminal and set up message being connected of selected PDSN to 1x BS; Be that PCF can send the connection release message of user terminal and selected PDSN to 1x BS under the situation of data service of dormancy in above-mentioned data service.This method can improve the validity and the accuracy of system.
Preferably, before step S304, PCF receives the message that has discharged data service from the indicating user terminal of network side in 1x BS; And PCF sends the connection Release complete of the user terminal PDSN corresponding with it to 1x BS.For example, PCF receives the request message from the release user terminal of 1x BS, PCF is to the PDSN corresponding with user terminal when carrying out data service (be user terminal use) this request message of forwarding, and receives the message of this user terminal success of release that this PDSN responds.This method is simple and practical, workable.
Preferably, step S304 sends to DO AN at PCF and is used for notifying the terminal use under the situation of the notification message of 1x BS release data service, and DOAN can delete the local PDSN address information corresponding with user terminal of preserving; Perhaps the DOAN PDSN address information corresponding with user terminal of can this locality preserving is set to sky.This method can improve the validity of system.
Corresponding to said method, the embodiment of the invention also provides a kind of cdma base station system.Fig. 4 is the structural representation according to the cdma base station system of the embodiment of the invention, as shown in Figure 4, this cdma base station system 40 comprises 1x BS 42, DO AN 44 and PCF 46, wherein, 1x BS 42 and DO AN 44 are same PCF 46 times, 1x BS 42 comprises: first receiver module 422 is used to receive user terminal switches to 1x BS 42 from DO AN 44 switching message; PCF 46 comprises: sending module 462, be used for sending informing user terminal set up and/or discharged data service at 1x BS 42 notification message, wherein, carry the PDSN address information of PCF 46 current selected in the notification message of notifying the terminal use in 1x BS 42, to set up data service; DO AN 44 comprises: second receiver module 442, be coupled to sending module 462, and be used to receive above-mentioned notification message from PCF 46; And update module 444, be coupled to second receiver module 442, be used for upgrading the local PDSN address information corresponding of preserving with user terminal according to this notification message.
Preferably, update module 444 also is used for sending to DO AN 44 at PCF 46 and is used for informing user terminal and sets up at 1x BS 42 under the situation of notification message of data service, upgrades the local PDSN address information corresponding with user terminal of preserving according to the PDSN address information of carrying in the notification message.
Preferably, update module 444 also is used for being used to notify the terminal use at PCF 46 under the situation of the notification message of 1x BS 42 release data services to DO AN 44 transmissions, the local PDSN address information corresponding with user terminal of preserving of deletion; Perhaps the PDSN address information corresponding with user terminal of this locality preservation is set to sky.
Preferably, sending module 462 is used for also receiving that (for example, indicating user terminal PDSN) has discharged after the message of data service, sends the connection Release complete of the user terminals PDSN corresponding with it to 1x BS 42 from network side in 1x BS42.
Be elaborated below in conjunction with the implementation procedure of preferred embodiments and drawings to the foregoing description.
Embodiment one
Present embodiment provides the method for in time notifying DO AN under this PCF when the user uses the 1x data service under a kind of same PCF, thereby can being got access to all the time, source DO AN inserts up-to-date PDSN address information when the user uses the 1x data service, perhaps make source DO AN can get access to the information that the user discharges the 1x data service, solved and transmitted the problem that may there be mistake in the PDSN address when different Access Networks switch.
For example, when the user set up CDMA 1x data service, PCF can notify the PDSN address information DO AN under this PCF, DO AN upgrade in time PDSN address information and other relevant informations; When the user discharged the 1x data service, PCF can notify DO AN with user's release information, DO AN deletion PDSN address information and other relevant informations.
In specific implementation process, the transmission method of message can may further comprise the steps in the cdma base station system of present embodiment:
Step 1, PCF in time notifies DO AN with the user in the information of 1x foundation and release data service.
Step 2, DO AN receives the PDSN address update notification of PCF, upgrades the PDSN address information of preserving; The user who receives PCF discharges notice, deletion PDSN address information and other relevant informations.
Preferably, can also comprise in step 1: after the user set up 1x data service success, PCF sent PDSN address update notification to DO AN; After the user discharged the 1x data service, PCF sent user's release and is notified to DO AN.
Preferably, in step 2, can also comprise: when DO AN receives PDSN address update notification, upgrade the address of preserving PDSN; DO AN receives when the user discharges notice, PDSN address information and other relevant informations that deletion is preserved.
Need to prove, set up the 1x data service in the above-mentioned steps 1 and can be included in the data service that 1x sets up activation down, can also comprise the data service (being that dormancy is switched) of setting up dormancy.
Embodiment two
Fig. 5 is a flow chart of setting up the 1x activating data service according to the user of the embodiment of the invention, as shown in Figure 5,
Step S502,1x BS sends to PCF and sends A9-Setup-A8 message, requires to set up activating data service.
Step S504, PCF selects a PDSN message according to the load sharing principle.
Step S506, PCF sends message A11-Registration Request message to the PDSN that chooses.
Step S508, PDSN respond A11-Registration Reply message.
Step S510, PCF responds A9-Connect-A8 message to 1x BS.
Step S512, PCF sends PDSN address update notification message to DO AN.
Step S514, DO AN upgrades the PDSN address information of preserving.
Embodiment three
Fig. 6 is a flow chart of setting up 1x dormant data business according to the user of the embodiment of the invention, and as shown in Figure 6, this flow process can may further comprise the steps:
Step S602,1x BS sends to PCF and sends A9-Setup-A8 message, requires to set up the dormant data business.
Step S604, PCF selects a PDSN according to the load sharing principle.
Step S606, PCF sends message A11-Registration Request message to the PDSN that chooses.
Step S608, PDSN respond A11-Registration Reply message.
Step S610, PCF responds A9-Release-A8 Complete message to 1x BS.
Step S612, PCF sends PDSN address update notification message to DO AN.
Step S614, DO AN upgrades the PDSN address information of preserving.
Embodiment four
Fig. 7 is the flow chart that discharges data service according to the 1x user of the embodiment of the invention, and as shown in Figure 7, this flow process can may further comprise the steps:
Step S702,1x BS send to PCF and send A9-Release-A8 message indication release user.
Step S704, PCF sends message A11-Registration Request message to PDSN.
Step S706, PDSN respond A11-Registration Reply message.
Step S708, PCF responds A9-Release-A8 Complete message to 1x BS.
Step S710, PCF send the user to DO AN and discharge notification message.
Step S712, PDSN address information and other relevant informations that DO AN deletion is preserved.
In sum, the embodiment of the invention relates to that user in a kind of cdma base station system sets up and the method for notice EVDO Access Network when discharging the 1x data service, can be used for PDSN address information and other relevant informations that the EVDO Access Network upgrades in time or deletes preservation.By the embodiment of the invention, adopt user terminal switches to 1xBS under the same PCF from DOAN after, under 1x BS, use or the mode of relevant information when discharging data service by this user terminal of PCF notice DO AN, improved the stability of system.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the transmission method of message in the code division multiple access cdma base station system is characterized in that, may further comprise the steps:
User terminal switches to base station 1x BS under the same Packet Control Function PCF from access network DO AN;
Described PCF sends to described DO AN and is used for notifying described user terminal to set up and/or discharge the notification message of data service at described 1x BS, wherein, the described group data service node PDSN address information that is used for notifying described terminal use in described 1x BS sets up the described notification message of data service, to carry described PCF current selected;
Described DO AN receives described notification message, upgrades the local PDSN address information corresponding with described user terminal of preserving according to described notification message.
2. method according to claim 1, it is characterized in that, send under the situation that is used for notifying described user terminal sets up data service at described 1x BS described notification message to described DO AN at described PCF, described DO AN upgrades the local PDSN address information corresponding with described user terminal of preserving according to described notification message and comprises:
Described DO AN upgrades the local PDSN address information corresponding with described user terminal of preserving according to the described PDSN address information of carrying in the described notification message.
3. method according to claim 2 is characterized in that, described PCF sends to described DO AN and is used for notifying before described user terminal sets up the described notification message of data service at described 1x BS, also comprises:
Described PCF selects a PDSN according to the load sharing principle, and sends described user terminal is set up described data service in described 1x BS request message to selected PDSN;
Described selected PDSN sends described user terminal is set up described data service success in described 1x BS message to described PCF.
4. according to claim 2 or 3 described methods, it is characterized in that described selected PDSN sends described user terminal sets up the message of described data service success in described 1x BS after to described PCF, also comprises:
Described PCF receives the described user terminal that sends from described selected PDSN and set up the message of described data service success in described 1x BS;
Under the situation of described data service for the data service of activation, described PCF sends described user terminal and sets up message being connected of described selected PDSN to described 1x BS; Be that described PCF sends the connection release message of described user terminal and described selected PDSN under the situation of data service of dormancy to described 1x BS in described data service.
5. method according to claim 1, it is characterized in that, be used for notifying described terminal use at described PCF under the situation of the described notification message of described 1x BS release data service to described DO AN transmission, described DO AN upgrades the local PDSN address information corresponding with described user terminal of preserving according to described notification message and comprises:
The local PDSN address information corresponding of preserving of described DO AN deletion with described user terminal; Perhaps
The PDSN address information corresponding with described user terminal that preserve described DO AN this locality is set to sky.
6. method according to claim 5 is characterized in that, described PCF sends to described DO AN and is used for notifying described user terminal before the described notification message of described 1x BS release data service, also comprises:
Described PCF receives the message that has discharged described data service from the described user terminal of the indication of network side in described 1x BS; And
Described PCF sends the connection Release complete of the described user terminal PDSN corresponding with it to described 1x BS.
7. a code division multiple access cdma base station system is characterized in that, comprises base station 1x BS, access network DO AN and Packet Control Function PCF, wherein, described 1x BS and described DOAN under same described PCF,
Described 1x BS comprises: first receiver module is used to receive user terminal switches to described 1x BS from described DOAN switching message;
Described PCF comprises: sending module, be used for sending the notification message of notifying described user terminal to set up and/or discharge data service at described 1x BS, wherein, carry the group data service node PDSN address information of described PCF current selected in the described described notification message of notifying described terminal use in described 1x BS, to set up data service;
Described DO AN comprises: second receiver module is used to receive the described notification message from described PCF; And update module, be used for upgrading the local PDSN address information corresponding of preserving with described user terminal according to described notification message.
8. cdma base station system according to claim 7, it is characterized in that, described update module also is used for sending under the situation that is used to notify described user terminal sets up data service at described 1x BS described notification message to described DO AN at described PCF, upgrades the local PDSN address information corresponding with described user terminal of preserving according to the described PDSN address information of carrying in the described notification message.
9. according to claim 7 or 8 described cdma base station systems, it is characterized in that, described update module also is used for being used to notify described terminal use at described PCF under the situation of the described notification message of described 1x BS release data service to described DO AN transmission, the local PDSN address information corresponding with described user terminal of preserving of deletion; Perhaps the PDSN address information corresponding with described user terminal of this locality preservation is set to sky.
10. cdma base station system according to claim 9, it is characterized in that, described sending module also is used for sending the connection Release complete of the described user terminal PDSN corresponding with it to described 1xBS receiving from the described user terminal of the indication of network side after described 1x BS has discharged the message of described data service.
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| WO2004059856A1 (en) * | 2002-12-30 | 2004-07-15 | Sk Telecom Co., Ltd. | Method and system for switching over to 1x system upon 1xev-do system failure |
| CN101111067A (en) * | 2006-07-21 | 2008-01-23 | 华为技术有限公司 | Mobile terminal and communication method for gateway access |
| CN1921701A (en) * | 2006-09-01 | 2007-02-28 | 华为技术有限公司 | Network switching method and communication network system |
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