CN100433891C - Network initiated data service enquiry and called method - Google Patents
Network initiated data service enquiry and called method Download PDFInfo
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- CN100433891C CN100433891C CNB2004100454369A CN200410045436A CN100433891C CN 100433891 C CN100433891 C CN 100433891C CN B2004100454369 A CNB2004100454369 A CN B2004100454369A CN 200410045436 A CN200410045436 A CN 200410045436A CN 100433891 C CN100433891 C CN 100433891C
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Abstract
The present invention provides a method for querying and calling a network initiated data service. When a calling subscriber does not know the belonging PDSN address of a called subscriber, a belonging application server of the called subscriber queries the position of the called subscriber by a positions service, then queries current accessed PCF of the subscriber according to the position, and queries an IP address of the current belonging PDSN of the called subscriber according to the PCF. Accordingly, the application server still can query the address of the belonging PDSN of the called subscriber under the condition that the called subscriber does not register to the application server. With the present invention, the subscriber does not need to register to the belonging application server, a called service of the subscriber data can be supported by using the existing equipment under the condition that the network is less modified. The modification to the network can be focused on the application server, particularly for the state that one PCF only is coupled with one PDSN so as to be convenient for opening services.
Description
Technical field
The present invention relates to network originated data service (NIDS) technical field, be meant a kind of network originated called method of data service inquiry especially.
Background technology
" PULL " mode is generally adopted in present data service, so-called " PULL " mode, be exactly that the user initiatively sets up earlier data service and connects, connect, and sign in to and browse or download oneself interested content on certain WEB website or the server as the link protocol (PPP) of point-to-point.
In some cases, need network initiatively to descend photos and sending messages to give the user, promptly the called subscriber receives information in passive mode, as VOIP (Voice over IP), video telephone etc. need applied business server (AS) initiatively to seek the called subscriber, are connected with called communication to set up caller.In these cases, network side must be known called data service address, and promptly the called subscriber just can be found in the IP address.But under the more susceptible condition, the called subscriber may not set up data service in advance and connect, even perhaps set up the data service connection, but does not sign in on specified web or the server, and at this moment, network is not known called IP address, also just can't with its communication.
Most typical example is exactly our usual business of using such as OICQ, ICQ, has also logined the QQ server with prerequisite the other side of certain " good friend " communication, otherwise just can't with its communication.
Figure 1 shows that Code Division Multiple Access (CDMA) (CDMA) system packet data network structural representation.Calling subscriber (CALLER) can be the computer of a cell phone, an online or the server that will send information to the called subscriber in concrete the application.Application server 1 (AS1) is the application server of CALLER login, and AS2 is the application server of called subscriber (MS) login.CALLER, AS1, AS2, the mobile location centre Chinese (MPC, Mobile Position Center) that the packet data serving node (PDSN) of grouping busihess data access function is provided and provides position enquiring to serve connect the access the Internet by IP respectively.
MPC directly links to each other by Signaling System Number 7 (SS7) with attaching position register (HLR) with mobile switch (MSC).MS sets up a PPP through wireless access network (RAN) with PDSN according to CDMA Packet Service agreement and connects, and connects by this PPP, and MS just can equally be connected on the IP network with the computer that dials up on the telephone.Base station controller (BSC), wireless base station (BTS) and Packet Control Function equipment such as (PCF) have been comprised among the RAN.
If what MS used is simple IP, then be responsible for MS distributing IP address by PDSN, if that the MS application is mobile IP, then initiate mobile IP login request as Foreign Agent to home agent (HA) by PDSN.At present, what the data service that the CDMA of UNICOM opens was used all is simple IP, only is that example describes below with the simple IP.Because the called flow of IP phone and video telephone is similar, is example with conversation initialized protocol (SIP) below, specifies the implementation procedure of IP phone.
Figure 2 shows that the called handling process of the IP phone of prior art.
After the step 201, called MS start, call out for accepting Packet data service, promptly IP telephone service is called out, and must initiate the PPP connection and set up process, and promptly MS sets up PPP through RAN and PDSN and is connected;
Step 204 after MS succeeds in registration, will not change the resting state Waiting for Call over to if receive calling in a period of time;
Step 209, PCF is to MS transparent transmission INVITE, if the current resting state that is in of MS, then RAN at first initiates paging to MS, set up the wireless side Traffic Channel after, again by PCF to MS transparent transmission INVITE;
Step 218 is used the IP telephone service conversation between CALLER and MS.
Above-mentioned AS1 can be different AS with AS2, also can be same AS, and when AS1 and AS2 are same AS, the Message Processing between all AS1 and the AS2 needn't be carried out.
Certain above-mentioned flow process also can adopt other call setup agreement, as H.323 waiting.
The defective of said method is: for NIDS, if the called subscriber does not arrive application server (for example AS2 in the foregoing description) registered in advance of ownership, then application server can't be known the PDSN at the current place of called subscriber, also just can not set up the connection between the calling and called user, thereby NIDS also just can't realize.And also do not define the mode that portable terminal is registered to application server registers automatically in the present CDMA standard.
In addition, if when in a single day registered called subscriber switches to new PDSN, the information that is kept in the application server will be carried out corresponding renewal, and it is also comparatively complicated that this switches flow process of upgrading.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of network originated called method of data service inquiry, do not arrive the called subscriber under the situation of application server registers, application server can inquire the address of the current affiliated PDSN of called subscriber.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of network originated called method of data service inquiry, this method may further comprise the steps:
A, called subscriber are connected with the link protocol PPP that packet data serving node PDSN sets up point-to-point through Radio Access Network RAN;
After application server AS under the b, called subscriber receives call request message from the calling subscriber, inquiry is local whether preserve the called subscriber current under the IP address of PDSN, if having, execution in step d then, otherwise execution in step c;
The described application server AS of c, step b is by the current position of location service inquiry called subscriber, then according to this position, the PCF of the current access of this user of list query by the user position of having preserved in self and Packet Control Function PCF server and PDSN corresponding relation, and by this PCF inquire the called subscriber current under the IP address of PDSN;
The IP address of the described application server AS of d, step b PDSN under the called subscriber is current sends calling subscriber's request message, and PDSN sends this request message to called subscriber through RAN.
Preferably, the current position of the described called subscriber of step c adopts Cell Global Identity GCI to identify.
Preferably, the described application server AS of step c by the method that PCF inquires the IP address of the current affiliated PDSN of called subscriber is:
If PCF links to each other with a PDSN, then application server AS directly inquires the IP address of the current affiliated PDSN of called subscriber according to the customer location of self preserving and the tabulation of Packet Control Function PCF and PDSN corresponding relation by PCF;
If PCF links to each other simultaneously with an above PDSN, then application server AS sends the request message of the inquiry PDSN address that comprises CSI called subscriber identification information to this PCF, and obtains the IP address of the current affiliated PDSN of called subscriber from the return information of PCF.
Preferably, described called subscriber's identification information is called subscriber's international mobile subscriber identity IMSI or mobile number book number MDN.
Preferably, described step a further comprises: the called subscriber sets up with PDSN and enters resting state after PPP is connected; Described steps d further comprises: RAN at first sets up the wireless side Traffic Channel with the called subscriber, wakes the called subscriber of this dormancy up, sends this request message to called subscriber then.
Preferably, the application server AS of the described called subscriber's ownership of step b and the AS of calling subscriber's ownership are same AS, or are different AS.
Preferably, if the application server AS of calling subscriber and called subscriber's ownership is same AS, then comprise in described calling subscriber's the call request message: called subscriber's mobile number book number MDN; If the calling subscriber is different AS with the application server AS of called subscriber's ownership, then comprise in described calling subscriber's the call request message: the IP address information of called subscriber's mobile number book number MDN and called affiliated application server AS.
Preferably, comprise in the user position that the described application server AS of step c self is preserved and the tabulation of Packet Control Function PCF and PDSN corresponding relation, the IP address of GCI, PCF, and the corresponding relation of the PDSN information that links to each other with this PCF, perhaps, comprise that GCI jumps the address information of application server with next relevant with this GCI.
Preferably, the tabulation of described user position and Packet Control Function PCF server and PDSN corresponding relation, be network during by networking the annexation configuration be the tabulation of index with the GCI section.
Preferably, this method further comprises: after the calling subscriber receives success response message from the called subscriber, give called subscriber's loopback acknowledge message, establish a communications link between the calling and called user.
The present invention does not know under the situation of the current affiliated PDSN address of called subscriber the calling subscriber, application server AS 2 under the called subscriber inquires the position at this current place of called subscriber by location service, according to Packet Control Function (PCF) server of the current access of this user of this position enquiring, last then by the IP address of this PCF server lookup to the current affiliated PDSN of called subscriber.Like this, do not arrive the called subscriber under the situation of application server registers, application server still can inquire the address of the affiliated PDSN of called subscriber.Use the present invention, the user needn't be registered to the application server of ownership earlier, utilizes existing device, under the situation of carrying out less network amendment, just can support the user data called service.Especially only and the situation that PDSN connects, for a PCF can to network modification concentrate on the application server.Made things convenient for professional carrying out.
Description of drawings
Figure 1 shows that cdma system packet data network structural representation;
Figure 2 shows that the called handling process of the IP phone of prior art;
Figure 3 shows that the called handling process of using IP phone of the present invention;
Figure 4 shows that AS2 in the foregoing description obtains the flow chart of PDSN address, the current place of user in the PCF of the current access of user.
Embodiment
For making technical scheme of the present invention clearer, the present invention is done detailed description further again below in conjunction with accompanying drawing.
Thinking of the present invention is: do not know the calling subscriber under the situation of the current affiliated PDSN address of called subscriber, application server AS 2 under the called subscriber inquires the position at this called subscriber place by location service, Packet Control Function (PCF) server of the current access of this user of list query of user position of having preserved by self then and Packet Control Function PCF server and PDSN corresponding relation, and by the IP address of this PCF server lookup to the current affiliated PDSN of called subscriber.Like this, do not arrive the called subscriber under the situation of application server registers, application server still can inquire the address of the affiliated PDSN of called subscriber.
Location service is the sign by the user, for example, the MDN of user application or international mobile subscriber identity (IMSI) are found a business of user's current location, the position that is inquired can adopt GCI to come the current position of identifying user with longitude and latitude or Cell Global Identity (GCI) expression in the following embodiments.
In order to make AS2 pass through the IP address of the position enquiring at this called subscriber place, need the tabulation of pre-configured GCI and PCF and PDSN (PCF/PDSN) corresponding relation, and this tabulation is kept in the AS2 to the current affiliated PDSN of called subscriber.This tabulation is the annexation of network during by networking, configuration be index with GCI, can search the tabulation of corresponding relations such as PCF and PDSN information.Because GCI is a scope very little in the networking structure, for reducing the data clauses and subclauses in this tabulation, in this tabulation, make the IP address of the corresponding PCF of each GCI section, simultaneously, in this tabulation, also comprise the PDSN information that links to each other with PCF, or next relevant with certain GCI section jumped the address information of application server.
Referring to table 1, table 1 is depicted as the sample table of using GCI of the present invention and PCF/PDSN corresponding relation.
| Record | GCI number (index territory) | The IP address of GCI place PCF | Whether PDSN is unique | The IP address of PDSN that PCF connects | Next jumps application server |
| 1 | 460031212 | 10.11.13.32 | Be | 10.11.199.31 | NULL |
| 2 | 460031213 | 10.10.144.41 | Not | NULL | NULL |
| 3 | 4600313141121 | (129.9.124.55 private network) | Be | 10.11.199.31 | NULL |
| 4 | 25002 | NULL | Not | NULL | 33.12.2.4 |
| 5 | ...... |
Table 1
Be example still below,, specify its implementation procedure in conjunction with Session Initiation Protocol with the IP telephone service.
Figure 3 shows that the called handling process of using IP phone of the present invention.
After the step 301, called MS start, call out for accepting Packet data service, promptly IP telephone service is called out, and must initiate the PPP connection and set up process, and promptly MS sets up PPP through RAN and PDSN and is connected; Afterwards, enter the resting state Waiting for Call;
Step 304, if having, then handle by existing procedure the local IP address of whether preserving the current affiliated PDSN of called subscriber MS of application server AS 2 inquiries, otherwise inquire the Cell Global Identity (GCI) at this called subscriber place by location service;
Step 305, AS2 inquires about Packet Control Function (PCF) server of the current access of this MS according to the GCI that self preserves and the tabulation of PCF/PDSN corresponding relation by GCI;
For example, the GCI that inquires the called subscriber by location service is 4600312121234, because 460031212ABCD, ABCD wherein can from 0000 to 9999, all belong to call number and be in 460031212 the GCI section, referring to table 1, AS2 adopts maximum matching way, by the GCI that inquires can be directly from the tabulation of the GCI that self preserves and PCF/PDSN corresponding relation, the PCF server that inquires the IP address and be 10.11.13.32 is the PCF server of the current access of this MS;
When network size is big, can take hierarchical processing mode to inquire about earlier, and then use maximum matching way and inquire about, for example, record 4 in the table 1, when AS2 can't inquire corresponding with it PCF address information according to GCI information, but in the time of can inquiring the address information of application server of next jumping, AS2 sends to this Query Information the application server of next jumping, application server by next jumping adopts maximum matching way to inquire about, or continue this Query Information is sent to the application server of next jumping, till inquiring, and the PCF address information that is inquired is returned to AS2 by the application server that finally inquires; Above-mentioned inquiry theory is connected control section (SCCP) agreement with signal in the Signaling System Number 7 global title (GT, Global Title) route is very similar;
After AS2 inquires the PCF server, again according to the IP address of this PCF server lookup to the current affiliated PDSN of called subscriber; The specific implementation method is as follows:
If PCF links to each other with a PDSN, then application server AS 2 directly inquires the IP address of the current affiliated PDSN of called subscriber according to the GCI that self preserves and the tabulation of PCF/PDSN corresponding relation by PCF;
If PCF links to each other simultaneously with an above PDSN, because the IP address that can't fill in PDSN when building table, as the record in the table 12, this moment, the IP address of PCF was public network IP address certainly, like this, the AS2 IP address that can be directly obtains active user place PDSN in the PCF of the current access of user; The specific implementation method as shown in Figure 4;
Step 307 is connected owing to preserve PPP between PDSN and the MS, therefore, and the PCF forwarding INVITE of PDSN in the RAN at user place;
Step 308, PCF is to MS transparent transmission INVITE, if the current resting state that is in of MS, then RAN at first initiates paging to MS, set up the wireless side Traffic Channel after, again by PCF to MS transparent transmission INVITE;
Step 317 is used the IP telephone service conversation between CALLER and MS.
Figure 4 shows that AS2 in the foregoing description obtains the flow chart of PDSN address, the current place of user in the PCF of the current access of user.
Certain above-mentioned flow process also can adopt other call setup agreement, as H.323 waiting.
Above-mentioned AS1 can be different AS with AS2, also can be same AS, and when AS1 and AS2 are same AS, the Message Processing between all AS1 and the AS2 needn't be carried out, and the operation of AS1 and AS2 all is regarded as an operation.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of network originated called method of data service inquiry is characterized in that this method may further comprise the steps:
A, called subscriber are connected with the link protocol PPP that packet data serving node PDSN sets up point-to-point through Radio Access Network RAN;
After application server AS under the b, called subscriber receives call request message from the calling subscriber, inquiry is local whether preserve the called subscriber current under the IP address of PDSN, if having, execution in step d then, otherwise execution in step c;
The described application server AS of c, step b is by the current position of location service inquiry called subscriber, then according to this position, the PCF of the current access of this user of list query by the user position of having preserved in self and Packet Control Function PCF server and PDSN corresponding relation, and by this PCF inquire the called subscriber current under the IP address of PDSN;
The IP address of the described application server AS of d, step b PDSN under the called subscriber is current sends calling subscriber's request message, and PDSN sends this request message to called subscriber through RAN.
2, method according to claim 1 is characterized in that, the described called subscriber of step c adopts current position Cell Global Identity GCI to identify.
3, method according to claim 1 is characterized in that, the described application server AS of step c by the method that PCF inquires the IP address of the current affiliated PDSN of called subscriber is:
If PCF links to each other with a PDSN, then application server AS directly inquires the IP address of the current affiliated PDSN of called subscriber according to the customer location of self preserving and the tabulation of Packet Control Function PCF and PDSN corresponding relation by PCF;
If PCF links to each other simultaneously with an above PDSN, then application server AS sends the request message of the inquiry PDSN address that comprises CSI called subscriber identification information to this PCF, and obtains the IP address of the current affiliated PDSN of called subscriber from the return information of PCF.
4, method according to claim 3 is characterized in that, described called subscriber's identification information is called subscriber's international mobile subscriber identity IMSI or mobile number book number MDN.
5, method according to claim 1 is characterized in that,
Described step a further comprises: the called subscriber sets up with PDSN and enters resting state after PPP is connected;
Described steps d further comprises: RAN at first sets up the wireless side Traffic Channel with the called subscriber, wakes the called subscriber of this dormancy up, sends this request message to called subscriber then.
6, method according to claim 1 is characterized in that, the application server AS of the described called subscriber's ownership of step b and the AS of calling subscriber's ownership are same AS, or are different AS.
7, method according to claim 6 is characterized in that,
If the application server AS of calling subscriber and called subscriber's ownership is same AS, then comprise in described calling subscriber's the call request message: called subscriber's mobile number book number MDN;
If the calling subscriber is different AS with the application server AS of called subscriber's ownership, then comprise in described calling subscriber's the call request message: the IP address information of called subscriber's mobile number book number MDN and called affiliated application server AS.
8, method according to claim 1, it is characterized in that, comprise in the user position that the described application server AS of step c self is preserved and the tabulation of Packet Control Function PCF and PDSN corresponding relation, the IP address of GCI, PCF, and the corresponding relation of the PDSN information that links to each other with this PCF, perhaps, comprise that GCI jumps the address information of application server with next relevant with this GCI.
9, method according to claim 8 is characterized in that, the tabulation of described user position and Packet Control Function PCF server and PDSN corresponding relation, be network during by networking the annexation configuration be the tabulation of index with the GCI section.
10, method according to claim 1 is characterized in that, this method further comprises: after the calling subscriber receives success response message from the called subscriber, give called subscriber's loopback acknowledge message, establish a communications link between the calling and called user.
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|---|---|---|---|
| CNB2004100454369A CN100433891C (en) | 2004-05-19 | 2004-05-19 | Network initiated data service enquiry and called method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100454369A CN100433891C (en) | 2004-05-19 | 2004-05-19 | Network initiated data service enquiry and called method |
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| CN1700804A CN1700804A (en) | 2005-11-23 |
| CN100433891C true CN100433891C (en) | 2008-11-12 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020057662A1 (en) * | 2000-11-15 | 2002-05-16 | Lim Byung Keun | Method and system for multicasting & broadcasting IP packet in mobile communication system, and terminal thereof |
| CN1359244A (en) * | 2000-11-20 | 2002-07-17 | 艾利森电话股份有限公司 | Method of registering mobile IP (MIP) for mobile node (MN), system and group data service node |
| CN1436414A (en) * | 2000-04-11 | 2003-08-13 | 艾利森电话股份有限公司 | System and method for packet data servicing node (PDSN) initial assignment and reselection |
| US20040081118A1 (en) * | 2002-10-24 | 2004-04-29 | Lucent Technologies Inc. | Method and apparatus for providing user identity based routing in a wireless communications environment |
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2004
- 2004-05-19 CN CNB2004100454369A patent/CN100433891C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1436414A (en) * | 2000-04-11 | 2003-08-13 | 艾利森电话股份有限公司 | System and method for packet data servicing node (PDSN) initial assignment and reselection |
| US20020057662A1 (en) * | 2000-11-15 | 2002-05-16 | Lim Byung Keun | Method and system for multicasting & broadcasting IP packet in mobile communication system, and terminal thereof |
| CN1359244A (en) * | 2000-11-20 | 2002-07-17 | 艾利森电话股份有限公司 | Method of registering mobile IP (MIP) for mobile node (MN), system and group data service node |
| US20040081118A1 (en) * | 2002-10-24 | 2004-04-29 | Lucent Technologies Inc. | Method and apparatus for providing user identity based routing in a wireless communications environment |
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