CN101754277A - Method for selecting access gateway and control node of access gateway - Google Patents
Method for selecting access gateway and control node of access gateway Download PDFInfo
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- CN101754277A CN101754277A CN200810187263A CN200810187263A CN101754277A CN 101754277 A CN101754277 A CN 101754277A CN 200810187263 A CN200810187263 A CN 200810187263A CN 200810187263 A CN200810187263 A CN 200810187263A CN 101754277 A CN101754277 A CN 101754277A
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Abstract
The invention discloses a method for selecting an access gateway in a CDMA network and a control node of the access gateway. The method for selecting the access gateway comprises the following steps of: transmitting registration request information to the control node of the access gateway by a wireless network; selecting the access gateway according to the contract signing attribute of a user by the control node of the access gateway and transmitting a label selecting the access gateway to the wireless network; and accessing a terminal into an IP network by the wireless network through the access gateway. By the method and the control node of the access gateway which are provided by the invention, the control nodes of PDSNs can select the PDSNs according to the contract signing attribute of the user when a plurality of PDSNs provide services simultaneously, and the load balancing of the total system is ensured.
Description
Technical field
The present invention relates to code division multiple access (CDMA) network technology, relate in particular to method and the control node of access gateway of selecting IAD in a kind of cdma network.
Background technology
Packet data service service node (Packet Data Serving Node, PDSN) be a kind of wireless network (RN) and packet switched public data network (Packet Switched PublicData Network, PSPDN) IAD between is the access device of mobile terminal accessing the Internet in CDMA 2000 networks.The function that PDSN provides comprises wireless access, authentication (AAA) client and roaming broker etc.For wireless access, PDSN is connected with cdma base station (BS) with A11 by interface A10.The A10 interface is used to transmit data, and the packet path is GRE (Generic Route Encapsulation)/IP tunnel; The A11 interface is used for command transmitting, and management A10 connects.For the AAA client, PDSN sends to the aaa server of IP network with authentication information, the latter again with ownership place in aaa server get in touch, by the authentication of portable terminal, and and then authorize and charging work.Under the situation of roaming broker, portable terminal is asked for the IP address by roaming broker to home agent, to realize mobile IP function.In the process of 4G evolution, PDSN will be replaced by AGW at CDMA 2000, and AGW still has the function of IAD.
Fig. 1 is the structure chart of CDMA 2000 network systems.As shown in Figure 1, comprise in this system access terminal 11, wireless network 12, PDSN 13, IP network 14 and aaa server 15.Accessing terminal 11 links to each other with wireless network 12 by air interface (Air Interface), and wireless network 12 passes through RP (between Radio and the PDSN) interface and links to each other with PDSN 13, and IP network 14 is passed through the RADIUS interface and linked to each other with aaa server 15.
Wireless network comprises base station and group control of functional node (PCF), and by air interface and terminal interaction, the assurance terminal still can be used network when mobile.PDSN comprises to terminal IP (the Internet agreement is referring to RFC791) address being provided and transmitting packet between Internet and terminal for terminal provides the ability of access (Internet) or private network.Aaa server is connected with PDSN by IP network, when the user passes through accessing terminal to network, gives PDSN with user's signing data distributing.
Receive the access request of terminal initiation when wireless network after, wireless network sends login request message (being defined as A11-Registration Request message in the 3GPP2A.S0017 standard) and gives PDSN, after receiving registration reply message (being defined as A11-Registration Reply message in the 3GPP2A.S0017 standard) the agreement access of PDSN, wireless network is linked into network with terminal, and this moment, terminal can be used wireless network.
Before terminal was connected to internet or private network, the sign of terminal can be submitted to PDSN by the login request message that wireless network sends.In message, the sign of terminal is defined as MSID (Mobile Station Identification).
A wireless network can connect a plurality of PDSN, and wireless network should dispose the PDSN tabulation in this locality and comprise a plurality of PDSN, and selects PDSN in turn according to predetermined strategy.But, select PDSN to have bigger limitation by wireless network, be difficult to guarantee the load balancing of whole system.
Summary of the invention
The technical problem that the present invention will solve provides the method for selecting IAD in a kind of cdma network, can guarantee the load balancing of whole system.
The invention provides the method for selecting IAD in a kind of CDMA network, comprising: wireless network sends login request message to control node of access gateway; Control node of access gateway is selected IAD according to the signatory attribute of user, and the sign of the IAD selected is sent to described wireless network; Wireless network identifies corresponding IAD with the terminal accessing IP network by this IAD.
According to an embodiment who selects the method for IAD in the cdma network of the present invention, above-mentioned control node of access gateway selects the step of IAD to comprise according to the signatory attribute of user: control node of access gateway extracts user ID from login request message, obtains the signatory attribute of user according to user ID; Control node of access gateway selects to support the IAD of the signatory attribute of this user.
According to another embodiment that selects the method for IAD in the cdma network of the present invention, control node of access gateway selects the step of IAD to comprise according to the signatory attribute of user: control node of access gateway load condition according to IAD from the IAD of supporting the signatory attribute of this user is selected IAD.The preferential low IAD of load of selecting.
According to another embodiment that selects the method for IAD in the cdma network of the present invention, above-mentioned IAD is PDSN, and this method also comprises: the PDSN Control Node is obtained the signatory attribute of user from the signatory attribute database of user, stores the signatory attribute list of user into; The PDSN Control Node is obtained the load condition of PDSN from PDSN.The step of obtaining the signatory attribute of user according to user ID comprises: control node of access gateway obtains the signatory attribute of user according to the signatory attribute list of user ID inquiring user.
The present invention also provides a kind of access network Control Node, comprising: the request receiver module, be used to receive login request message, and extract the user ID in the login request message, send user ID; The attribute acquisition module is used to receive the user ID from the request receiver module, obtains the signatory attribute of user according to user ID, sends the signatory attribute of user; Node is selected module, is used to receive the signatory attribute from the user of attribute acquisition module, selects IAD according to the signatory attribute of user, sends the sign of the IAD of selecting.
An embodiment according to control node of access gateway of the present invention also comprises: the load acquisition module is used to obtain the load condition of IAD; Node is selected module, is used to receive the signatory attribute from the user of attribute acquisition module, selects IAD according to the load condition that the signatory attribute of user and load acquisition module obtain, and sends the sign of the IAD of selecting.
Select the method and the control node of access gateway of IAD in the cdma network provided by the invention, select IAD according to the signatory attribute of user, can guarantee the load balancing of whole system by control node of access gateway.
Description of drawings
Fig. 1 is the structure chart of CDMA 2000 network systems;
Fig. 2 is the structure chart of cdma network of the present invention system;
Fig. 3 is the flow chart of an embodiment of the method for selection IAD of the present invention;
Fig. 4 is the flow chart of another embodiment of the method for selection IAD of the present invention;
Fig. 5 is the block diagram of an embodiment of control node of access gateway of the present invention;
Fig. 6 is the block diagram of another embodiment of control node of access gateway of the present invention.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention wherein is described.In the accompanying drawings, identical label is represented same or analogous assembly or element.
Fig. 2 is the structure chart of cdma network of the present invention system.As shown in Figure 2, this network system comprise access terminal 21, wireless network 22, PDSN Control Node 23, PDSN 24, IP network 25 and attribute database 26.Access terminal and 21 be linked into IP network 25 by wireless network 22 and PDSN 24.Wireless network 22 carries out alternately with PDSN Control Node 23, and PDSN Control Node 23 is selection PDSN 24 from the PDSN group of being managed, and finishes 21 the access procedure of accessing terminal.
PDSN Control Node 23 is mutual with the database 26 of preserving the signatory attribute of user by database interface, signatory attribute of the user in the synchronization properties database 26 and the signatory attribute of PDSN Control Node 23 maintenance customers.Following table 1 is the example of the signatory attribute list of user of PDSN Control Node 23 maintenances:
| User ID | Use vpn service | Use dual-mode terminal |
| ??A | Not | Not |
| ??B | Be | Not |
| ??C | Not | Be |
| ??D | Be | Be |
Table 1
When user expectation was used the network of operator, user and operator subscribed to the agreement, and determined to use which business.For example the user can subscribe to the agreement with operator and determine to use virtual private networks (VPN) business.Since vpn service need be from PDSN by private line access to enterprise's private network, if the user determines to use vpn service, this user must be handled by specific PDSN.For example the user can subscribe to the agreement with operator and determine use dual-mode terminal again.Because dual-mode terminal can send the login request message of non-cdma network, perhaps carrying special parameter in the login request message of cdma network definition, to indicate this calling be the calling of being initiated by dual-mode terminal, traditional PDSN may refuse this calling because discerning new information or new argument, therefore need be handled the calling from dual-mode terminal by the PDSN of appointment.The database of preserving the signatory attribute of user is after newly signatory back of user or old user change its CAMEL-Subscription-Information, can user contracting data be synchronized to the PDSN Control Node by the database interface of PDSN Control Node, before the user was linked into network, the PDSN Control Node had obtained user's subscription data.The PDSN Control Node also can be obtained the signatory attribute information of user to attribute database when needed.
PDSN Control Node 23 is mutual by radio network interface and wireless network 22.Wireless network 22 can dispose PDSN Control Node 23 in local PDSN tabulation IP address.
PDSN Control Node 23 is undertaken monitoring the load state of PDSN 24 in real time alternately by a plurality of PDSN 24 of PDSN interface and its management.PDSN Control Node 23 can be aggregated into the load state of PDSN 24 the PDSN load state table that PDSN Control Node 23 is safeguarded.Following table 2 shows an example of PDSN load condition table, in this load condition table, also comprises other attribute informations of PDSN:
| The PDSN address | Load state | Support vpn service | Support dual-mode terminal |
| ??10.10.1.2 | ??20％ | Not | Not |
| ??10.10.1.3 | ??25％ | Not | Be |
| ??10.10.1.4 | ??15％ | Be | Not |
| ??10.10.1.5 | ??60％ | Be | Be |
Table 2
Fig. 3 is the flow chart of an embodiment of the method for selection IAD of the present invention.
As shown in Figure 3, in step 302, the access of radio network that accesses terminal, wireless network sends login request message to control node of access gateway.Comprise the sign that accesses terminal in the login request message.
In step 304, control node of access gateway is selected IAD according to the signatory attribute of user, and the sign of the IAD selected is sent to wireless network.Control node of access gateway obtains the sign in the login request message, according to the signatory attribute list of the sign inquiring user that accesses terminal, selects suitable IAD, and the information such as for example IP address of the IAD of selection are sent to wireless network.
In step 306, wireless network sends login request message to the IAD that returns, by this IAD with the terminal accessing IP network.
Fig. 4 is the flow chart of another embodiment of the method for selection IAD of the present invention.
As shown in Figure 4, in step 402, the PDSN Control Node is contracted attribute to this locality from the database synchronization user who preserves the signatory attribute of user, and stores.
In step 404, terminal makes a call, and sets up airlink by air interface between the wireless network.
In step 406, after wireless network is received the call request of terminal initiation, send login request message to the PDSN Control Node, comprise the sign that accesses terminal in this login request message.
In step 408, the radio network interface of PDSN Control Node receives this message.Radio network interface extracts the user ID in the message, and the control module transmission request to the PDSN Control Node requires to select a PDSN for this user;
In step 410, control module is taken out the signatory attribute of user according to the signatory attribute list of user ID retrieval user;
In step 412, control module inquiry PDSN load state table, selection can be handled one group of PDSN of the signatory attribute of this user, selects a PDSN according to the load state of PDSN in the PDSN group of selecting then;
In step 414, control module returns to radio network interface with the PDSN address of selecting, radio network interface returns registration reply message and gives wireless network, error code (Code) field in this message is set to 136, and Home Agent field is set to the PDSN address that the PDSN Control Node is selected;
In step 416, wireless network can resend login request message after receiving such registration reply message, and this message is sent in the registration reply message PDSN of PDSN address appointment in the Home Agent field.
In step 418, PDSN returns registration reply message.Wireless network is by this PDSN access IP network that will access terminal.
Fig. 5 is the block diagram of an embodiment of control node of access gateway of the present invention.As shown in Figure 5, this control node of access gateway comprises request receiver module 51, attribute acquisition module 52 and node selection module 53.Wherein, request receiver module 51 is used to receive the login request message from wireless network, extracts the user ID in the login request message, and user ID is sent to attribute acquisition module 52.Request receiver module 51 can be by radio network interface and wireless communication.Attribute acquisition module 52 is used to receive the user ID from request receiver module 51, obtains the signatory attribute of user according to user ID, the signatory attribute of user is sent to node select module 53.Attribute acquisition module 52 can be mutual by database interface and the signatory attribute database of user.Node is selected module 53, be used to receive signatory attribute from the user of attribute acquisition module 52, select to support the IAD of the signatory attribute of this user according to the signatory attribute of the user who receives, the sign of the IAD selected is turned back to wireless network by registration reply message.The sign of IAD can be the IP address of IAD etc.
An embodiment according to control node of access gateway of the present invention, the attribute acquisition module obtains the signatory attribute of user from signatory attribute database, be stored in the signatory attribute list of local user, when receive from the request receiver module user ID the time, obtain the signatory attribute of the user corresponding by the signatory attribute list of inquiring user, will obtain the signatory attribute of user and send to node selection module with user ID.
Fig. 6 is the block diagram of another embodiment of control node of access gateway of the present invention.As shown in Figure 6, this control node of access gateway comprises request receiver module 51, attribute acquisition module 52, node selection module 63 and load acquisition module 64.Wherein, request receiver module 51 and attribute acquisition module 52 can be described referring to the correspondence of Fig. 5, for for purpose of brevity, are not described in detail at this.Wherein, load acquisition module 64 is used for obtaining from IAD by the IAD interface load condition of IAD.Node is selected module 63, is used to receive the signatory attribute from the user of attribute acquisition module 52, selects IAD according to the load condition that the signatory attribute of user and load acquisition module 64 obtain, and sends the wireless network that is identified to of the IAD selected.Load acquisition module 64 can also obtain the load condition of IAD by the IAD interface, is stored in the IAD load condition table.The professional ability information that also comprises IAD in the IAD load condition table, for example whether IAD is supported vpn service or whether is supported information such as dual-mode terminal.
Control node of access gateway of the present invention can be used for the management and the selection of IADs such as PDSN or AGW.
Introduce application examples below according to the method for selection IAD of the present invention.The signatory attribute list of user is referring to table 1, and PDSN load condition table is referring to table 2.
After supposing that user A is linked into network, wireless network sends login request message to the PDSN Control Node, and the PDSN Control Node is extracted user ID from login request message, be ' A '.The PDSN Control Node is obtained the signatory attribute of user A according to the signatory attribute list of user ID retrieval user, finds that user A had not both had signatory " use vpn service " yet not signatory " use dual-mode terminal ".The PDSN Control Node is retrieved PDSN load state table then.Because each PDSN can both handle this user's calling in the PDSN load state table, therefore select this PDSN of 10.10.1.3 of load state minimum to handle.The PDSN Control Node is returned registration reply message and is given wireless network, and wherein the error code field is set to 136, and Home Agent field is set to 10.10.1.4.
After supposing that user B is linked into network, wireless network sends login request message to the PDSN Control Node, and the PDSN Control Node is extracted user ID from login request message, be ' B '.The PDSN Control Node is taken out the signatory attribute of user according to the signatory attribute list of user ID retrieval user, and the discovery user has contracted " use vpn service " but not signatory " use dual-mode terminal ".The PDSN Control Node is retrieved PDSN load state table then.Because the PDSN of " support vpn service " has only two in the PDSN load state table: 10.10.1.4 and 10.10.1.5, promptly have only these two PDSN can handle this user's calling, therefore select this PDSN of 10.10.1.4 of load state minimum to handle.The PDSN Control Node is returned registration reply message and is given wireless network, and wherein the error code field is set to 136, and Home Agent field is set to 10.10.1.4.
After supposing that user C is linked into network, wireless network sends login request message to the PDSN Control Node, and the PDSN Control Node is extracted user ID from login request message, be ' C '.The PDSN Control Node is taken out the signatory attribute of user according to the signatory attribute list of user ID retrieval user, and the discovery user does not have signatory " use vpn service " but contracted " use dual-mode terminal ".The PDSN Control Node is retrieved PDSN load state table then.Because the PDSN of " support dual-mode terminal " has only two in the PDSN load state table: 10.10.1.3 and 10.10.1.5, promptly have only these two PDSN can handle this user's calling, therefore select this PDSN of 10.10.1.3 of load state minimum to handle.The PDSN Control Node is returned registration reply message and is given wireless network, and wherein the error code field is set to 136, and Home Agent field is set to 10.10.1.3.
After supposing that user D is linked into network, wireless network sends login request message to the PDSN Control Node, and the PDSN Control Node is extracted user ID from login request message, be ' D '.The PDSN Control Node is taken out the signatory attribute of user according to the signatory attribute list of user ID retrieval user, finds user's not only signatory " use vpn service " but also contracted simultaneously " use dual-mode terminal ".The PDSN Control Node is retrieved PDSN load state table then.Since in the PDSN load state table not only the PDSN of " support vpn service " but also " support dual-mode terminal " have only 1: 10.10.1.5, therefore can only select this PDSN to handle.The PDSN Control Node is returned registration reply message and is given wireless network, and wherein the error code field is set to 136, and Home Agent field is set to 10.10.1.5.
The method of selection IAD provided by the invention and control node of access gateway, when a plurality of IADs provided service, control node of access gateway can be selected IAD according to the signatory attribute of user, guarantees the load balancing of whole system.
By architecture and method provided by the invention, the PDSN Control Node can adopt multiple policy selection PDSN, guarantees the load balancing of whole system.Specific user can also be assigned to one group of specific PDSN by architecture and method provided by the invention handles.This locality configuration by architecture and method wireless network provided by the invention obtains simplifying, and no longer needs to dispose a plurality of PDSN address, only needs the address of configuration PDSN Control Node.
It is to be noted, though in the above embodiments and application examples, main reference PDSN describes method and apparatus of the present invention, but, those skilled in the art will appreciate that method and apparatus of the present invention is equally applicable to for example selection and the control of other accessing gateway equipments of AGW.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the present invention's design is suitable for special-purpose.
Claims (10)
1. select the method for IAD in the CDMA network, it is characterized in that, comprising:
Wireless network sends login request message to control node of access gateway;
Described control node of access gateway is selected IAD according to the signatory attribute of user, and the sign of described IAD is sent to described wireless network;
Described wireless network passes through described IAD with the terminal accessing IP network.
2. the method for selection IAD according to claim 1 is characterized in that, described control node of access gateway selects the step of IAD to comprise according to the signatory attribute of user:
Described control node of access gateway extracts user ID from described login request message, obtain the signatory attribute of user according to described user ID;
Described control node of access gateway selects to support the IAD of the signatory attribute of described user.
3. the method for selection IAD according to claim 1 is characterized in that, described control node of access gateway selects the step of IAD to comprise according to the signatory attribute of user:
Described control node of access gateway load condition according to described IAD from the IAD of supporting the signatory attribute of described user is selected IAD.
4. the method for selection IAD according to claim 3 is characterized in that, described IAD is Packet data service service node PDSN, and described method also comprises:
Described PDSN Control Node is obtained the signatory attribute of described user from the signatory attribute database of user;
Described PDSN Control Node is obtained the load condition of PDSN from PDSN.
5. according to the method for claim 2,3 or 4 described selection IADs, it is characterized in that described control node of access gateway storing user subscription attribute list; The step of obtaining the signatory attribute of user according to described user ID comprises:
Described control node of access gateway obtains the signatory attribute of user according to the signatory attribute list of user ID inquiring user.
6. according to the method for any described selection IAD in the claim 1 to 4, it is characterized in that described wireless network comprises by the step of described IAD with the terminal accessing IP network:
Described wireless network sends login request message to described IAD;
Described IAD sends registration reply message to described wireless network, and described IAD is with described terminal accessing IP network.
7. a control node of access gateway is characterized in that, comprising:
The request receiver module is used to receive login request message, extracts the user ID in the described login request message, sends described user ID;
The attribute acquisition module is used to receive the user ID from the described request receiver module, obtains the signatory attribute of user according to described user ID, sends the signatory attribute of described user;
Node is selected module, is used to receive the signatory attribute from the user of described attribute acquisition module, selects IAD according to the signatory attribute of described user, sends the sign of the IAD of described selection.
8. control node of access gateway according to claim 7 is characterized in that, also comprises:
The load acquisition module is used to obtain the load condition of IAD;
Described node is selected module, is used to receive the signatory attribute from the user of described attribute acquisition module, selects IAD according to the load condition that the signatory attribute of described user and described load acquisition module obtain, and sends the sign of the IAD of described selection.
9. according to claim 7 or 8 described control node of access gateway, it is characterized in that, described attribute acquisition module obtains the signatory attribute of user from signatory attribute database, be stored in the signatory attribute list of user, when the user ID that receives from the described request receiver module, obtain the signatory attribute of the user corresponding by inquiring about the signatory attribute list of described user, send the signatory attribute of described user with described user ID.
10. control node of access gateway according to claim 8 is characterized in that, described load acquisition module obtains the load condition of IAD by the IAD interface, is stored in the IAD load condition table; The professional ability information that also comprises IAD in the described IAD load condition table.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012088873A1 (en) * | 2010-12-31 | 2012-07-05 | 中兴通讯股份有限公司 | Selection and disaster recovery method and system for access support node, and access control device |
| CN103888288A (en) * | 2014-02-20 | 2014-06-25 | 北京优联实科信息科技有限公司 | Registration method, administrator, register and system |
| CN104168206A (en) * | 2013-05-20 | 2014-11-26 | 中国电信股份有限公司 | Adapter gateway load balancing control method, device and system |
| WO2018133454A1 (en) * | 2017-01-19 | 2018-07-26 | 广州华多网络科技有限公司 | Method for controlling remote service access path, and relevant apparatus |
| CN109379436A (en) * | 2018-11-19 | 2019-02-22 | 海尔优家智能科技（北京）有限公司 | A kind of gateway distribution method, device, server and storage medium |
| CN112689010A (en) * | 2020-12-23 | 2021-04-20 | 青岛海尔科技有限公司 | Equipment message transmission method and device, storage medium and electronic device |
| WO2022143061A1 (en) * | 2020-12-31 | 2022-07-07 | 中兴通讯股份有限公司 | Virtual machine access method, terminal, and storage medium |
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2008
- 2008-12-19 CN CN200810187263A patent/CN101754277A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012088873A1 (en) * | 2010-12-31 | 2012-07-05 | 中兴通讯股份有限公司 | Selection and disaster recovery method and system for access support node, and access control device |
| CN104168206A (en) * | 2013-05-20 | 2014-11-26 | 中国电信股份有限公司 | Adapter gateway load balancing control method, device and system |
| CN104168206B (en) * | 2013-05-20 | 2017-05-17 | 中国电信股份有限公司 | Adapter gateway load balancing control method, device and system |
| CN103888288A (en) * | 2014-02-20 | 2014-06-25 | 北京优联实科信息科技有限公司 | Registration method, administrator, register and system |
| WO2018133454A1 (en) * | 2017-01-19 | 2018-07-26 | 广州华多网络科技有限公司 | Method for controlling remote service access path, and relevant apparatus |
| CN109379436A (en) * | 2018-11-19 | 2019-02-22 | 海尔优家智能科技（北京）有限公司 | A kind of gateway distribution method, device, server and storage medium |
| CN112689010A (en) * | 2020-12-23 | 2021-04-20 | 青岛海尔科技有限公司 | Equipment message transmission method and device, storage medium and electronic device |
| CN112689010B (en) * | 2020-12-23 | 2023-03-28 | 青岛海尔科技有限公司 | Equipment message transmission method and device, storage medium and electronic device |
| WO2022143061A1 (en) * | 2020-12-31 | 2022-07-07 | 中兴通讯股份有限公司 | Virtual machine access method, terminal, and storage medium |
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Open date: 20100623 |