CN100512294C

CN100512294C - Method for selecting gateway general packet wireless service support node

Info

Publication number: CN100512294C
Application number: CNB2005101056062A
Authority: CN
Inventors: 邱雪峰; 陈靖; 周丹明
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2005-09-28
Filing date: 2005-09-28
Publication date: 2009-07-08
Anticipated expiration: 2025-09-28
Also published as: CN1852304A

Abstract

The method for selecting GGSN includes following procedures: configuring coincidence relation between mobile network of operation manager and IP address of APNOI, APNNI, GGSN at SGSN; after receiving message of requesting activation sent from user equipment UE, in procedure of selecting APNOI and APNNI, one method of SGSN selects the configured APNOI and APNNI if the network of operation manager the UE belongs to has configured APNOI and APNNI; then based on parsed result form domain name server; the other method selects GGSN corresponding to configured IP address directly if the network of operation manager the UE belongs to has configured IP address of GGSN. The invention selects GGSN of network this operation manager for UE of requesting activation.

Description

A kind of method of selecting gateway general packet wireless service support node

Technical field

The present invention relates to wireless access technology, be meant the method for a kind of selection gateway general packet radio service (GPRS, General Packet Radio Service) support node (GGSN, Gateway GPRSSupporting Node) especially.

Background technology

MVNO (MVNO, Mobile Virtual Network Operator) is meant that some are similar to retailer's company, MVNO does not have the core network of oneself, but from Mobile Network Operator (MNO, Mobile Network Operator) locate to rent core network, the brand of stamping oneself then provides communication service.Abroad, MVNO steps into the maturity period, at home, also begins to pay close attention to and carry out the operation way of MVNO.Since the expense height that core network is built, and the present stage that frequency resource is quite nervous, the frequency rent is also very high, and therefore, core network of the common use of a plurality of operators can be shared whole expense.In the process of construction of Wideband Code Division Multiple Access (WCDMA) (WCDMA) network, do not use because 3G (Third Generation) Moblie (3G) business is also large-scale, 3G subscription is also fewer, therefore, core network of the common use of a plurality of operators, also helpful for the recovery of networking fund.

For packet domain, this demand is even more important.Packet switch domain service lacks than circuit domain at present, and a lot of MVNO can temporarily not build Serving GPRS Support Node (SGSN, Serving GPRSSupport Node), and share the SGSN of MNO.

Figure 1 shows that typical several MVNO share the networking situation of the core network of MNO, this network comprises N1 as can be seen from Figure, N2, N3, wherein N1 is the core network of MNO, comprise SGSN, mobile switching centre (MSC), radio network controller (RNC, Radio NetworkControl), N2 and N3 are the networks of MVNO, comprise GGSN separately, GMSC (gateway mobile switching center) (GMSC, Gateway Mobile Switching Center), can also comprise attaching position register (HLR separately, Home Location Register), (the SMC of short message service center, ShortMessage Center), service control point (SCP, Service Control Point) etc.The GGSN that MVNO has separately, HLR etc. can provide separately professional and service for the user according to MVNO operation mode separately.

MVNO generally has oneself independently GGSN, is convenient to carry out characteristic service.But, MVNO can take the independently Public Land Mobile Nerwork (PLMN of MNO, Public Land MobileNetwork) whole network No.s also can take the part PLMN network No. of MNO, and wherein said PLMN network No. can show with international mobile subscriber identity (IMSI) number or number segment table.The PLMN network No. that described MVNO takies MNO is the PLMN network No. that MVNO rents MNO, that is, MNO distributes to MVNO with part or all PLMN network No. and uses.

SGSN is GPRS/ universal mobile telecommunications system (UMTS) packet domain core network network equipment, and is that the network equipment that uses is shared by a plurality of operators as shown in Figure 1.SGSN need finish business datum between subscriber equipment (UE) and GGSN route and the function of forwarding; SGSN need finish the controlled function that SGSN sets up, revises and discharge to the GTP tunnel between the GGSN (GPRS Tunnelling Protocol Tunnel); SGSN need finish set up and RNC/UE between RAB, and to controlled function such as the modification of this RAB and releases.Wherein UE can be various travelling carriages (MS, Mobile Station), for example mobile phone, vehicle-mounted travelling carriage etc.

When UE adhered to, SGSN obtained the subscription data of UE from HLR by Gr interface.After adhering to successfully, must carry out activation process, set up the GTP tunnel between SGSN and the GGSN after, could service data transmission.

Suppose that SGSN selects the GGSN of MNO for the UE of MVNO: if MNO allows the UE of MVNO to insert, then the expense of the UE of MVNO when MNO carries out business will be billed in the charge system of MNO, and this is loss for MVNO; If MNO does not allow the UE of MVNO to insert, then the UE of MVNO is with access failure.Therefore, for the UE of MVNO, how SGSN correctly selects GGSN is a key technical problem.

In the activation process, UE sends to SGSN and activates request message, carries packet data protocol (PDP, Packet Data Protocol) type, pdp address, APN (APN in this message, Access Point Name), service quality parameters such as (QoS, Quality of Service).Wherein, PDP type, pdp address and APN are optional parameters, can not occur in activating request message or are null value; APN may only contain APN network identity (APNNI, Access Point NameNetwork Identifier), also may comprise APNNI and APN operator sign (APNOI, Access Point Name Operator Identifier) two parts.Wherein APNNI is a network identity, and APNOI is operator's sign, and therefore, can the GGSN that correctly find operator will depend on selected APNOI.

Existing 3GPP 23.060 agreement appendix As have stipulated that SGSN receives behind the activation request message of UE the system of selection to GGSN.According to agreement, SGSN at first needs to select APNNI and APNOI, and the combination by APNNI and APNOI obtains sending domain name mapping request message, the IP address of searching GGSN to name server (DNS, Domain Name Server) after the GGSN domain name then.Introduce the method for selecting GGSN in 3GPP 23.060 agreements below in detail.

Step 201:UE sends and activates request message to SGSN, and SGSN obtains the IMSI of this UE by the sign of Access Layer;

After step 202:SGSN receives the described activation request message of step 201, select APNNI, be described in detail as follows according to 3GPP 23.060 agreements:

SGSN obtains and activates the parameter of carrying in the request message, and promptly PDP type, pdp address, APN when carrying wherein one or more parameters, at first judge whether to satisfy and activate required condition, if do not satisfy, then refuse the activation request of this UE, process ends; If satisfy, then SGSN obtains the subscription data of this UE from HLR according to the IMSI of this UE, judge then should whether having unique subscription data by UE, to judge also whether activate the parameter of carrying in the request message is complementary with subscription data, judge whether the APN parameter is asterisk wildcard in the subscription data, according to above judged result, exist following several selection results: SGSN to refuse the activation request of this UE, process ends; SGSN selects to activate the APNNI that carries in the request message; SGSN selects the APNNI in this UE subscription data; SGSN selects default APNNI.

According to above judgement, under the situation of following two kinds of judged results, SGSN selects default APNNI:

(1) do not carry PDP type, pdp address, APN if activate in the request message, or the value of these parameters of carrying is a null value, then SGSN obtains the subscription data of this UE from HLR according to the IMSI of this UE, if have unique subscription data for this UE, if and the APN parameter is an asterisk wildcard in the subscription data, then SGSN selects default APNNI;

(2) carry the PDP type if activate in the request message, do not carry pdp address, APN or the pdp address that carries, APN parameter value for empty, then SGSN obtains the subscription data of this UE from HLR according to the IMSI of this UE, if exist and only exist one with the activation request message in the subscription data of the PDP type matching of carrying, if the APN parameter is an asterisk wildcard in the subscription data, then SGSN selects default APNNI.

Step 203:SGSN selects APNOI according to 3GPP 23.060 agreements, is described in detail as follows:

For the ownership UE of SGSN, if carried APNOI in the activation request message of this UE, then this APNOI must be the APNOI of Home PLMN (being SGSN), otherwise refusal activates request, process ends; If do not carry APNOI in the activation request message of this UE, then select the APNOI of Home PLMN (being SGSN).

For the visit UE of SGSN, if carried APNOI in the activation request message of this UE, then this APNOI must be the APNOI of Visited PLMN (being SGSN) or Home PLMN, otherwise refusal activates request, process ends; If do not carry APNOI in the activation request message of this UE, and if subscription data allow to use Visited PLMN, then preferentially select the APNOI of Visited PLMN (being SGSN), otherwise, select the APNOI of Home PLMN.

Step 204:SGSN obtains the GGSN domain name by the combination of APNNI and APNOI, sends the domain name mapping request message to DNS then, to search the IP address of GGSN;

Step 205:SGSN selects the GGSN of this IP address correspondence according to the IP address of the analysis result acquisition GGSN of DNS.

Lift object lesson below, the process according to above-mentioned agreement process selecting GGSN is described.

The PLMN of example 1:MNO is MCC 460, and MNC 001, and MVNO takies part IMSI number or number section of the PLMN of this MNO.To suppose, number section of the IMSI that takies of MVNO is 4600011 * * * * * * * *, wherein * be 0～9 Any Digit.

Suppose that belong to the UE requesting activation of the MVNO of SGSN, the IMSI of this UE is 460001123456789, and carry the PDP type in the activation request message of this UE, do not carry pdp address, APN parameter, but have unique subscription data, and should signatory APN be asterisk wildcard for this UE.

According to step 202, SGSN selects the APNNI of default configuration.

According to step 203, UE activates in the request message and does not carry APNOI, and this UE belongs to SGSN, therefore selects the APNOI of SGSN place PLMN for it, i.e. MNC001.MCC460.GPRS.

According to step 204, after the combination of SGSN by the APNNI that selects in

step

202 and 203 to obtain and APNOI obtains the GGSN domain name, send the domain name mapping request message to DNS.

According to step 205, because APNOI only is accurate to MCC and MNC, the analysis result of DNS is the IP address of the GGSN of MNO, so SGSN can only select the GGSN of MNO for this UE.

Example 2:MVNO takies independently PLMN.Suppose that the independently PLMN that MVNO takies is MCC 460, MNC 009, then number section of the IMSI of the UE of MVNO be 460009 * * * * * * * * *.When IMSI was the UE requesting activation of 460009123456789 MVNO, the APNOI that chooses according to step 203 was MNC009.MCC460.GPRS.Owing to can judge that from MNC009.MCC460.GPRS this UE belongs to MVNO, DNS also can just can correctly find the IP address of the GGSN of MVNO according to this APNOI.

In sum, the shortcoming of prior art is:

1) selects in the prior art in the scheme of GGSN, only take under the situation of PLMN independently, can correctly find the GGSN of MVNO at MVNO; And take at MVNO under the situation of the part IMSI number of PLMN of MNO or number section, can only find the GGSN of MNO, can not correctly find the GGSN of MVNO.

2) since among the SGSN APNNI of default configuration be the APNNI of MNO, therefore,, can only select the APNNI of MNO when SGSN is the UE of MVNO when selecting the APNNI of default configuration.

Summary of the invention

The technical scheme that will solve of the present invention is, the method for a kind of GGSN of selection is provided, so that SGSN can correctly find the GGSN of the mobile operator network under this UE for the UE of requesting activation.

The invention provides the method for a kind of GGSN of selection, comprising:

At the corresponding relation of SGSN configuration mobile operator network number and APNOI, this method comprises:

A) after SGSN receives the activation request message of user equipment (UE) transmission, be that this UE selects APN network identity APNNI according to activating the parameter of carrying in the request message;

B) SGSN determines the mobile operator network number under this UE, utilizes this mobile operator network number to inquire about described corresponding relation, if determine that SGSN has disposed the pairing APNOI of this mobile operator network number, and the APNOI that is found for this UE selection then;

C) SGSN utilizes APNNI and APNOI to obtain the IP address of GGSN from domain name server (DNS), selects the GGSN of this IP address correspondence.

Wherein, described step B further comprises: if determine self not dispose the pairing APNOI of this mobile operator network number, then according to agreement process selecting APNOI.

Wherein, further comprise before the described steps A: at the corresponding relation of SGSN configuration mobile operator network number and APNNI;

Steps A is described to be comprised for this UE selects APN network identity APNNI according to activating the parameter of carrying in the request message: if SGSN is defined as the default APNNI of this UE selection according to activating the parameter of carrying in the request message, then SGSN determines after the affiliated mobile operator network number of this UE, utilize this mobile operator network number to inquire about the corresponding relation of described mobile operator network number and APNNI, disposed the pairing APNNI of this mobile operator network number if determine SGSN, then the APNNI that is found for this UE selection.

Wherein, described mobile operator network is a MVNO MVNO network,

Described mobile operator network number is the concrete number or number section of MVNO network.

The invention provides a kind of method of selecting gateway general packet wireless service support node GGSN,

Comprise:

At first at the corresponding relation of SGSN configuration mobile operator network number with the IP address of the GGSN that belongs to this mobile operator network, or/and the corresponding relation of configuration mobile operator network number and APNOI, this method comprises:

B) SGSN determines the mobile operator network number that this UE is affiliated, utilizes this mobile operator network number to inquire about described corresponding relation, if determine the IP address that SGSN has disposed the pairing GGSN of this mobile operator network number, then execution in step c; If determine the IP address that SGSN does not dispose the pairing GGSN of this mobile operator network number, then execution in step d;

C) SGSN selects the IP address of the GGSN that found for this UE, and selects the pairing GGSN in this IP address, process ends;

D) SGSN utilizes the affiliated mobile operator network number of UE to inquire about the corresponding relation of described mobile operator network number and APNOI, if definite pairing APNOI of this mobile operator network number that self disposed, the then APNOI that is found for this UE selection;

E) SGSN utilizes APNNI and APNOI to obtain the IP address of GGSN from domain name server (DNS), selects the GGSN of this IP address correspondence.

Wherein, described in the corresponding relation of SGSN configuration mobile operator network number and the IP address of the GGSN that belongs to this mobile operator network, if the GGSN that belongs to this mobile operator network is during for one or more, the corresponding relation of configuration mobile operator network number and the IP address of one or more GGSN that belong to this mobile operator network.

Wherein, described steps d further comprises: if determine self not dispose the pairing APNOI of this mobile operator network number, then according to agreement process selecting APNOI.

Wherein, further comprise before the described step a: at the corresponding relation of SGSN configuration mobile operator network number and APNNI;

Step a is described to be comprised for this UE selects APN network identity APNNI according to activating the parameter of carrying in the request message: if SGSN is defined as the default APNNI of this UE selection according to activating the parameter of carrying in the request message, then SGSN determines after the affiliated mobile operator network number of this UE, utilize this mobile operator network number to inquire about described corresponding relation, if definite pairing APNNI of this mobile operator network number that self disposed, the then APNNI that is found for this UE selection.

Wherein, described mobile operator network is the MVNO network;

According to method provided by the invention, in the relevant various parameters of SGSN configuration mobile operator network, for example, APNOI, APNNI, GGSN IP address, and the GGSN of mobile operator under can correctly selecting by the parameter of selecting to be disposed.Because APNOI is an operator sign, if be MVNO configuration of APN OI, the APNOI that selection is disposed just can correctly select the GGSN of MVNO; If be MVNO configuration GGSN IP address, select the GGSN IP that disposed according to the number of the UE of MVNO, just directly can select the GGSN of MVNO; If be MVNO configuration of APN NI, when needs are selected default APNNI, select the APNNI that number disposed of the UE of corresponding MVNO, just be equivalent to select the APNNI of MVNO.Therefore, according to method provided by the invention, SGSN is the GGSN that the UE of MVNO can correctly select to belong to MVNO.

Description of drawings

Figure 1 shows that the networking schematic diagram of sharing core network in the prior art;

Figure 2 shows that the flow chart of selecting GGSN in the prior art according to 3GPP 23.060 agreements;

Figure 3 shows that the flow chart of selecting first embodiment of GGSN among the present invention;

Figure 4 shows that the flow chart of selecting second embodiment of GGSN among the present invention.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, lift specific embodiment below, the present invention is further detailed explanation.

The present invention solves the problem that SGSN is the UE selection GGSN of requesting activation, and its main thought is: at first, SGSN need dispose the parameter relevant with operator to number or number section that MVNO takies; During the UE requesting activation, SGSN selects APNNI and APNOI, and SGSN obtains the IP address of GGSN according to APNNI and the APNOI IP address to dns resolution GGSN then; In its process, disposed APNOI, then selected the APNOI that is disposed if SGSN judges number or number section that MVNO is taken; If SGSN judges number or number section that MVNO is taken and disposed the GGSNIP address, then directly select GGSN IP address; If SGSN judges number or number section that MVNO is taken and disposed APNNI, and when need selecting default APNNI, select the APNNI that is disposed.

For the UE that gives the MVNO that does not have independent PLMN correctly selects GGSN, SGSN at first needs to dispose some parameters of MVNO:

1) APNOI of SGSN configuration MVNO, i.e. IMSI number or number section configuration of APN OI that MVNO is taken, the IMSI number or number section that perhaps at first MVNO are taken are divided into several portions, then each part are disposed corresponding APNOI.SGSN is the UE of requesting activation when selecting APNOI, if determine IMSI number that should UE is disposed APNOI, does not then need to select according to protocol procedures, and directly selects the APNOI to this IMSI disposed.The call format of configuration of APN OI is, " ^*. ^*.GPRS " form, wherein * represents any character.

2) the GGSN IP address of SGSN configuration MVNO, promptly dispose IMSI number or the corresponding one or more GGSN IP address of number section that takies with MVNO, the IMSI number or number section that perhaps at first MVNO are taken are divided into several portions, then each part are disposed corresponding GGSNIP address.SGSN determines that the IMSI number or number section of UE correspondence of the MVNO of requesting activation disposes GGSN IP address, does not then need to select APNOI again, and directly selects the GGSN to the MVNO that this IMSI disposed.

3) APNNI of SGSN configuration MVNO, i.e. IMSI number or number section configuration of APN NI that MVNO is taken, the IMSI number or number section that perhaps at first MVNO are taken are divided into several portions, then each part are disposed corresponding APNNI.When SGSN need select default APNNI for the UE of requesting activation, IMSI number that should UE is disposed APNNI, then directly select APNNI the MVNO that this IMSI disposed if judge.Wherein, the call format of configuration of APN NI is to be less than or equal to the character string of 63 characters.

SGSN writes down above-mentioned configured corresponding relation, for example writes down carrier network type under the UE of corresponding IMSI number or number section, parameter configuration situation etc. in the mode of table.Therefore, SGSN searches from above-mentioned table according to the IMSI of UE, just can judge whether to UE that should IMSI be the UE of MVNO, and can judge to should the IMSI number or number section whether dispose parameters such as above-mentioned APNNI, APNOI, GGSN IP address.

MVNO selects the configuration above-mentioned parameter according to demand arbitrarily, and also needs the corresponding relation in conjunction with domain name among the parameter update DNS that is disposed and IP address.

When the UE of MVNO requesting activation, whether SGSN selects APNNI and APNOI according to the configuration of above-mentioned carrier network relevant parameter, and utilizes APNNI and APNOI to select GGSN from DNS, the flow process of this method as shown in Figure 3, it is as follows to describe its process in detail:

Step 301:UE sends and activates request message to SGSN, and SGSN obtains the IMSI of this UE according to the access procedure of UE;

Step 302:SGSN selects APNNI according to 3GPP 23.060 agreement flow processs for this UE, in selection course, if SGSN determines the default APNNI of needs selection according to parameters such as PDP type, pdp address, APN in the activation request message, then at first search the IMSI number or number section corresponding parameters configuring condition of record in advance, judge then whether IMSI number that should UE is disposed APNNI, if dispose APNNI, then select the APNNI that IMSI number that should UE is disposed; If do not dispose, then select the default APNNI of MNO;

Step 303:SGSN searches in advance the IMSI number or number section corresponding parameters configuring condition of record, judges and whether IMSI number that should UE is disposed APNOI, if dispose, then execution in step 305; If not configuration, then execution in step 304;

Step 304:SGSN selects APNOI according to 3GPP 23.060 agreement flow processs for this UE, and execution in step 306 then;

Step 305:SGSN selects APNOI that IMSI number that should UE is disposed;

Step 306:SGSN obtains the GGSN domain name by the combination of APNNI and APNOI, sends the domain name mapping request message to DNS then, to search the IP address of GGSN;

Step 307:SGSN selects the GGSN of this IP address correspondence according to the IP address of the analysis result acquisition GGSN of DNS.

Wherein, the described SGSN of step 302 need select default APNNI to comprise following two kinds of situations:

Described step 302 can be that this UE selects APNNI according to 3GPP 23.060 agreement flow processs for: SGSN also.

According to whether MVNO being disposed GGSN IP address, the method for SGSN selection GGSN can also be as shown in Figure 4, and it is as follows to describe its process in detail:

Step 401:UE sends and activates request message to SGSN, and SGSN obtains the IMSI of this UE according to the access procedure of UE;

Step 402:SGSN selects APNNI according to 3GPP 23.060 agreement flow processs for this UE, in selection course, if SGSN determines the default APNNI of needs selection according to parameters such as PDP type, pdp address, APN in the activation request message, then at first search the IMSI number or number section corresponding parameters configuring condition of record in advance, judge then whether IMSI number that should UE is disposed APNNI, if dispose APNNI, then select the APNNI that IMSI number that should UE is disposed; If do not dispose, then select the default APNNI of MNO;

Step 403:SGSN searches in advance the IMSI number or number section corresponding parameters configuring condition of record, judges the IP address whether IMSI number that should UE is disposed corresponding GGSN, if dispose, then execution in step 404; If not configuration, then execution in step 405;

Step 404: directly obtain the IP address of GGSN that IMSI number that should UE is disposed, select the GGSN of this IP address correspondence, process ends;

Step 405:SGSN searches in advance the IMSI number or number section corresponding parameters configuring condition of record, judges and whether IMSI number that should UE is disposed APNOI, if dispose, then execution in step 407; If not configuration, then execution in step 406;

Step 406:SGSN is according to 3GPP 23.060 agreement process selecting APNOI, and execution in step 408 then;

Step 407:SGSN selects APNOI that IMSI number that should UE is disposed;

Step 408:SGSN obtains the GGSN domain name by the combination of APNNI and APNOI, sends the domain name mapping request message to DNS then, to search the IP address of GGSN;

Step 409:SGSN selects the GGSN of this IP address correspondence, process ends according to the IP address of the analysis result acquisition GGSN of DNS.

In step 403, if SGSN judges IMSI number that should UE is disposed the GGSNIP address, then also can be according to the IP address of the process selecting GGSN of step 405 to 409.

In the above-mentioned flow process, as

step

306 or 408, obtain after the GGSN domain name according to the combination of APNNI and APNOI, the corresponding relation that has configured among the DNS is depended in the IP address that successfully obtain GGSN in DNS can, therefore, MVNO need configure the domain name among the DNS and the corresponding relation of IP address according to the situation of the actual PLMN of taking.

Between

step

301 and 302, or between

step

401 and 402, can insert a determining step, whether the UE that judges current activation request according to the IMSI that is obtained is the UE of MVNO, if determine that this UE does not belong to MVNO, then can obtain the IP address of GGSN then from dns resolution according to 3GPP 23.060 agreement process selecting APNNI and APNOI; If determine that this UE belongs to MVNO, then the flow process that provides according to the present invention is obtained the IP address of GGSN.

In sum, because APNOI is an operator sign, therefore, do not have at MVNO under the situation of independent PLMN, configuration is to after should the sign APNOI of operator of MVNO, and the APNOI that selects to be disposed just can correctly select the GGSN of MVNO.If configuration belongs to the IP address of the GGSN of MVNO in SGSN, then need not select APNOI again, just can directly correctly select the GGSN of MVNO.

When MVNO took the independently PLMN of MNO, MVNO was according to the demand of self network, also can configuration of APN OI, APNNI, parameter such as GGSN IP, and then according to above-mentioned process selecting GGSN.MNO also can be according to the demand of self network, and parameters such as configuration of APN OI, APNNI, GGSN IP are selected GGSN according to method provided by the invention then.

The above, IMSI number that corresponding MVNO takies or number section configuration parameter relevant with operator, and write down carrier network type, parameter configuration situation under the UE of corresponding IMSI number or number section, or SGSN judges whether to dispose various parameters etc. according to the IMSI of UE, when wherein disposing the parameter of MVNO or judging the parameter configuration situation, the present invention does not limit the IMSI that only uses UE, but can use any sign or the characterisitic parameter of UE can, for example, the various parameters such as telephone number of UE.

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

1, a kind of method of selecting gateway general packet wireless service support node GGSN, it is characterized in that, at the corresponding relation of service universal grouping wireless serving GPRS support node SGSN configuration mobile operator network number and the sign APNOI of APN operator, this method may further comprise the steps:

After A, SGSN receive the activation request message of user equipment (UE) transmission, be that this UE selects APN network identity APNNI according to activating the parameter of carrying in the request message;

B, SGSN determine the mobile operator network number under this UE, utilize this mobile operator network number to inquire about described corresponding relation, if determine that SGSN has disposed the pairing APNOI of this mobile operator network number, and the APNOI that is found for this UE selection then;

C, SGSN utilize APNNI and APNOI to obtain the IP address of GGSN from domain name server (DNS), select the GGSN of this IP address correspondence.

2, method according to claim 1 is characterized in that, described step B further comprises: if SGSN determines self not dispose the pairing APNOI of this mobile operator network number, then according to agreement process selecting APNOI.

3, method according to claim 1 and 2 is characterized in that,

Further comprise before the described steps A: at the corresponding relation of SGSN configuration mobile operator network number and APNNI;

Specifically comprise for this UE selects APN network identity APNNI according to activating the parameter of carrying in the request message described in the steps A:

If SGSN is defined as the default APNNI of this UE selection according to activating the parameter of carrying in the request message, then SGSN determines to utilize this mobile operator network number to inquire about the corresponding relation of described mobile operator network number and APNNI after the affiliated mobile operator network number of this UE;

Disposed the pairing APNNI of this mobile operator network number if determine SGSN, then the APNNI that is found for this UE selection.

4, method according to claim 1 is characterized in that,

Described mobile operator network is a MVNO MVNO network,

5, method according to claim 3 is characterized in that,

Described mobile operator network is the MVNO network;

6, a kind of method of selecting gateway general packet wireless service support node GGSN, it is characterized in that, at the corresponding relation of SGSN configuration mobile operator network number with the IP address of the GGSN that belongs to this mobile operator network, or/and the corresponding relation of configuration mobile operator network number and APNOI, this method comprises:

B, SGSN determine the mobile operator network number under this UE, utilize this mobile operator network number to inquire about described corresponding relation, if determine the IP address that SGSN has disposed the pairing GGSN of this mobile operator network number, then execution in step C; If determine the IP address that SGSN does not dispose the pairing GGSN of this mobile operator network number, then execution in step D;

C, SGSN select the IP address of the GGSN that found for this UE, and select the pairing GGSN in this IP address, process ends;

D, SGSN utilize the mobile operator network number under the UE to inquire about the corresponding relation of described mobile operator network number and APNOI, if determine that SGSN has disposed the pairing APNOI of this mobile operator network number, and the APNOI that is found for this UE selection then;

E, SGSN utilize APNNI and APNOI to obtain the IP address of GGSN from domain name server (DNS), select the GGSN of this IP address correspondence.

7, method according to claim 6, it is characterized in that, described in the corresponding relation of SGSN configuration mobile operator network number and the IP address of the GGSN that belongs to this mobile operator network, if the GGSN that belongs to this mobile operator network is during for one or more, the corresponding relation of configuration mobile operator network number and the IP address of one or more GGSN that belong to this mobile operator network.

8, method according to claim 6 is characterized in that, described step D further comprises: if SGSN determines self not dispose the pairing APNOI of this mobile operator network number, then according to agreement process selecting APNOI.

9, according to claim 6,7 or 8 described methods, it is characterized in that,

10, method according to claim 6 is characterized in that,

Described mobile operator network is the MVNO network;