CN102572949A - Method and device for acquiring AGW (Access Gateway) load information by base station - Google Patents
Method and device for acquiring AGW (Access Gateway) load information by base station Download PDFInfo
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- CN102572949A CN102572949A CN2010106116520A CN201010611652A CN102572949A CN 102572949 A CN102572949 A CN 102572949A CN 2010106116520 A CN2010106116520 A CN 2010106116520A CN 201010611652 A CN201010611652 A CN 201010611652A CN 102572949 A CN102572949 A CN 102572949A
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Abstract
The invention discloses a method for acquiring AGW (Access Gateway) load information by a base station. The method comprises the step of carrying the load information of each AGW per se, which is connected with the base station, to the base station in a special signaling manner. The invention further discloses a device for acquiring the AGW load information by the base station. By means of the device, not only is the working efficiency of network equipment such as the base station and AGW increased and the speed for accessing a network by a terminal accelerated, but also the information interaction between AGWs can be reduced effectively, and the network access flow can be simplified greatly, so that network resources are saved effectively; and in addition, the method is easy to implement and favorable for reducing the network access cost.
Description
Technical field
The present invention relates to the wireless communication networks field of the 4th third-generation mobile communication system, relate in particular to method and device that a kind of base station obtains IAD (AGW, Access Gateway) load information.
Background technology
Modern field of wireless communication is progressively by the wireless network evolution to big capacity bandwidth of the wireless network of low capacity bandwidth.As far as the core net of WiMAX, its capacity also can be faced with a volatile growth, when large-scale network-estabilishing, is necessary to use a plurality of AGW, for example, forms an AGW pond by a plurality of AGW, certainly exists the problem of AGW redundancy and load balancing like this.
At present, the load balancing of AGW generally can realize in the AGW side, particularly: receive the access request of base station at AGW after, need be according to other AGW loading conditions in self load state and the AGW pond, with said access request route or be redirected on other AGW.So, be redirected or speed that the route access can be slowed down and inserted, also require each AGW in the AGW pond all can know the loading condition of other AGW simultaneously; So; In concrete the realization, need the mutual and storage of bulk information etc., implementing also has certain complexity.
If when accessing terminal to network; By base station (BS; Base Station) selecting only AGW according to the load information of each AGW in the AGW pond inserts; Just can avoid being redirected or route to inserting velocity effect, but the load information that needs BS can get access to each coupled AGW could be realized.
Summary of the invention
In view of this, main purpose of the present invention is the method and the device that provide a kind of base station to obtain the AGW load information, makes that can select only AGW according to the load information of each AGW by BS when the terminal is inserted inserts.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the method that a kind of base station obtains IAD (AGW) load information, said method comprises: each AGW that links to each other with the base station carries the load information of self to said base station through dedicated signaling.
In such scheme, said each AGW carries the load information of self to the base station through dedicated signaling, is specially: said each AGW carries to the base station through the load information of keep-alive response (Keep-Alive-Rsp) message with self.
In such scheme; Said each AGW carries to the base station through the load information of Keep-Alive-Rsp message with self; Be specially: said each AGW in said Keep-Alive-Rsp message, add predefined, be used to represent the AGW load field of AGW percentage load after, said Keep-Alive-Rsp message is sent to said base station.
In such scheme; AGW load field predefined, that be used to represent the AGW percentage load that said each AGW adds in said Keep-Alive-Rsp message, be specially: said each AGW adds said AGW load field in the said Keep-Alive-Rsp message to the form of label length value (TLV).
In such scheme; Said each AGW carries to before the base station through the load information of Keep-Alive-Rsp message with self, and said method also comprises: keep-alive request (Keep-Alive_Req) message periodically or is in real time sent to each AGW that self links to each other in said base station.
The present invention also provides a kind of and has been used to realize that the base station obtains the device of AGW load information, and said device comprises: transmitting element is used for sending the dedicated signaling that carries the AGW load information to each base station that links to each other with AGW.
In such scheme, said transmitting element specifically is used for sending the Keep-Alive-Rsp message that carries the AGW load information to each base station that links to each other with AGW.
In such scheme, said device also comprises: adding device is used for adding predefined, as to be used to represent AGW percentage load AGW load field in said Keep-Alive-Rsp message; Said transmitting element is used for the Keep-Alive-Rsp message after the said adding device processing is sent to said each base station that links to each other with AGW.
In such scheme, said adding device specifically is used for, and said AGW load field is added in the said Keep-Alive-Rsp message with the form of label length value (TLV).
In such scheme, said device also comprises: receiving element is used to receive the Keep-Alive_Req message that send said each base station that links to each other with AGW, and after receiving said Keep-Alive_Req message, starts said adding device.
Method and device that base station provided by the present invention obtains the AGW load information carry the AGW load information to the base station through dedicated signaling, if this dedicated signaling is periodically or in real time to send; So just can periodically or in real time current AGW load information be informed to the base station, make the base station to select proper A GW to insert according to current AGW load information; Do not need to be redirected again between the AGW or route access request, just can realize the load balancing of AGW in the access procedure, not only improved the operating efficiency of the network equipments such as base station, AGW; Accelerated the speed of accessing terminal to network; But also can effectively reduce the information interaction between the AGW, can simplify the access process of network greatly, thereby effectively save Internet resources; And this method is easy to realize, can reduces the network insertion cost.
Description of drawings
Fig. 1 is the composition configuration diagram of WiMAX Radio Network System;
Fig. 2 obtains the schematic flow sheet of AGW load information for base station of the present invention;
Fig. 3 is the Keep-Alive-Rsp message format sketch map that includes AGW Load;
Fig. 4 is the TLV form sketch map of AGW Load in the Keep-Alive-Rsp message.
Embodiment
Basic thought of the present invention is: BS real-time period property obtain the AGW load information; So that carry out access operation according to the AGW load information according to base station side; Do not need to be redirected again between the AGW or route access request, just can realize the load balancing of AGW, not only accelerated the speed of accessing terminal to network; But also can effectively reduce the information interaction between the AGW, thereby save resource.
Base station of the present invention obtains the method for AGW load information, and main process comprises: each AGW that links to each other with the base station carries the load information of self to said base station through dedicated signaling.
Particularly, said AGW carries to said base station through the load information of Keep-Alive-Rsp message with self.
Here; Said AGW carries to said base station through the load information of Keep-Alive-Rsp message with self; Be specially: AGW in said Keep-Alive-Rsp message, add predefined, be used to represent the AGW load field of AGW percentage load after, said Keep-Alive-Rsp message is sent to said base station.
In the practical application, said each AGW can add said AGW load field in the said Keep-Alive-Rsp message to the form of label length value (TLV, Tag Length Value).
Here; Before said AGW carried self load information to said base station through Keep-Alive-Rsp message, said method can also comprise: Keep-Alive_Req (keep-alive request) message periodically or is in real time sent to each AGW that self links to each other in said base station.
Particularly, Keep-Alive_Req message periodically or is in real time sent to each AGW that self links to each other in the base station, after each AGW receives said Keep-Alive_Req message, carries the Keep-Alive-Rsp message of self load information to said base station feedback.
In addition, the present invention also provides a kind of and has been used to realize that the base station obtains the device of AGW load information, and this device comprises: transmitting element is used for sending the dedicated signaling that carries the AGW load information to each base station that links to each other with AGW.
Wherein, said transmitting element specifically is used for sending the Keep-Alive-Rsp message that carries the AGW load information to each base station that links to each other with AGW.
Here, said device can also comprise: adding device is used for adding predefined, as to be used to represent AGW percentage load AGW load field in said Keep-Alive-Rsp message; Said transmitting element specifically is used for the Keep-Alive-Rsp message after the said adding device processing is sent to said each base station that links to each other with AGW.
Wherein, said adding device specifically is used for, and said AGW load field is added in the said Keep-Alive-Rsp message with the form of label length value (TLV, Tag Length Value).
Here, said device can also comprise: receiving element is used to receive the Keep-Alive_Req message that send said each base station that links to each other with AGW, and after receiving said Keep-Alive_Req message, starts said adding device.
In the practical application, can the device that be used for realizing that the base station obtains the AGW load information provided by the present invention be arranged on each AGW of network; The base station perhaps, can be provided with said device is independent, and is connected, so that can get access to the AGW load information with each AGW in the network.
The base station obtains the concrete implementation procedure of AGW load information method among the present invention, and flow process is following:
Step 1:BS success initialization;
Here, initialization procedure can be: BS powers on, and each hardware module and software module are normally moved among the BS, and detailed process is this area common technology means, repeats no more.
Step 2:BS periodically initiates Keep-Alive_Req message to each AGW that self links to each other;
Particularly, BS can periodically send Keep-Alive_Req message to each AGW that self links to each other according to pre-set time interval.Here, preestablishing of the time interval can confirm according to actual needs that detailed process is this area common technology means, repeats no more.
Step 3: said each AGW is after receiving said Keep-Alive_Req message; All to said BS feedback Keep-Alive-Rsp message; Wherein, AGW load (AGW Load) field that includes the load information that is used to represent that AGW is current among the said Keep-Alive-Rsp;
Particularly, with reference to figure 1, insert (WiMAX in worldwide interoperability for microwave; Worldwide Interoperabilityfor Microwave Access) in the wireless network, the framework of whole WiMAX Radio Network System mainly is made up of three parts: portable terminal (MS, Mobile Station), Access Network (AN; Access Network) and core net (CN, Core Network), wherein; AN comprises a plurality of base station (BS; Base Station) (BS_1 and BS_2) and AGW form, and the interface of communicating by letter between MS and each BS is the R1 mouth, and the interface that BS communicates by letter with AGW is the R6 interface; CN comprises Certificate Authority book keeping operation (AAA, AuthenticationAuthorization Accounting) server.
At present, stipulated Keep-Alive (keep-alive) mechanism between BS and the AGW in the NWG1.5 agreement, particularly: as shown in Figure 2; BS can periodically send Keep-Alive-Req message to AGW, and whether the R6 interface link that Keep-Alive-Req message is used to detect between BS and the AGW is normal, if received the Keep-Alive-Rsp message that AGW feeds back at official hour; Show that then the R6 link is normal; This AGW can use, otherwise just shows that this AGW is unavailable, can not be as alternative AGW when inserting.Keep-Alive mechanism provides a kind of method of periodicity interactive information between base station and the AGW, and the NWG agreement only is positioned the effect of Keep-Alive mechanism for link detecting, among the present invention; Effect to Keep-Alive mechanism is expanded; As shown in Figure 2, in the Keep-Alive-Rsp message of AGW feedback, add the field AGW Load that is used to represent AGW present load information, so; BS just can periodically obtain the current load information of each continuous AGW; And after the terminal initiated to insert request, the loading condition that BS just can be current according to each AGW selected a load state to meet the AGW of the AGW of current access requirement as access.
The process of in said Keep-Alive-Rsp message, adding field AGW Load can be: in Keep-Alive-Rsp message, increase a sub-TLV, this sub-TLV is field AGW Load predefined, that be used to represent the AGW percentage load.
As shown in Figure 3, be added with the Keep-Alive-Rsp message of field AGW Load, mainly comprise three fields: Failure Indication (mistake indication), Last Reset Time (last reset time) and AGW Load; Wherein, The index list of Failure Indication in the NGW1.5 agreement is 5.3.2.69, and its pressure/optional (M/O, Mandatory/Optional) type is optional (O; Optional); If in Keep-Alive-Rsp message, carry this field, value can be 0, and this field is represented Unspecified Error (undefined mistake); The index list of Last Reset Time in the NGW1.5 agreement is 5.1.4.1; Its M/O type is for forcing (M; Mandatory), represented implication is " The timestampof the Keep-alive RSP Sender ' s last boot up (the value generated during NE last bootup) " (the last timestamp that starts of the transmit leg of Keep-Alive-Rsp message); The index list of AGW Load in the NGW1.5 agreement is 5.1.4.7, and its M/O type is O, is used to represent the present load of AGW.
In the practical application; The AGW Load of TLV form can be set to structure as shown in Figure 4; Mainly can comprise: type (Type), octal system length (Length in Octets), value (Value), description (Description) and father TLV (Parent TLV (s)), wherein, Type is the sign of AGW Load in the NGW1.5 agreement; Be the current NGW1.5 agreement of compatibility, Type that can AGW Load is set to 0x7FFF (524287); Length in Octets can be set to variable (Variable), and span is 1～100, specifically can be when sending this message the loading condition decision of AGW; Include the concrete value of equipment supplier ID (VendorID), sub-TLV type (Sub TLV-Type), Length in Octets, Value among the Value, the value of VendorID can define according to equipment supplier's requirement, for example can be defined as 0x0015EB; The concrete value of Type can be 8; The concrete value of Length in Octets can be 1, and the value of Value is within [0,100]; The current percentage load of expression AGW; For example, the current percentage load of AGW is 55% o'clock, and the value of Value is 55; Parent TLV (s) can be defined as sky, and the TLV of expression AGW Load is not comprised by any TLV.
Step 4:BS according to the load information of each AGW that is obtained, selects the AGW of an AGW as current access, and carries out follow-up access operation after the access request that receives the terminal from each AGW that links to each other with self.
Particularly, BS is after the access request that receives the terminal, according to the load information of each AGW that is obtained; It is the percentage load of each AGW; From all with AGW that BS links to each other select the AGW of the minimum AGW of percentage load as current access, then, BS with all message in the current access procedure and data (as; The access request that send at the terminal etc.) all mail to selected AGW, continue the subsequent operation that current network is inserted at the terminal.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a base station obtains the method for IAD (AGW) load information, and it is characterized in that said method comprises: each AGW that links to each other with the base station carries the load information of self to said base station through dedicated signaling.
2. obtain the method for AGW load information according to the said base station of claim 1; It is characterized in that; Said each AGW carries the load information of self to the base station through dedicated signaling, is specially: said each AGW carries to the base station through the load information of keep-alive response (Keep-Alive-Rsp) message with self.
3. obtain the method for AGW load information according to the said base station of claim 2, it is characterized in that, said each AGW carries to the base station through the load information of Keep-Alive-Rsp message with self, is specially:
That said each AGW adds in said Keep-Alive-Rsp message is predefined, be used to represent the AGW load field of AGW percentage load after, said Keep-Alive-Rsp message is sent to said base station.
4. obtain the method for AGW load information according to the said base station of claim 3, it is characterized in that, AGW load field predefined, that be used to represent the AGW percentage load that said each AGW adds in said Keep-Alive-Rsp message is specially:
Said each AGW adds said AGW load field in the said Keep-Alive-Rsp message to the form of label length value (TLV).
5. obtain the method for AGW load information according to each said base station of claim 2 to 4, it is characterized in that, said each AGW carries to before the base station through the load information of Keep-Alive-Rsp message with self, and said method also comprises:
Keep-alive request (Keep-Alive_Req) message periodically or is in real time sent to each AGW that self links to each other in said base station.
6. one kind is used to realize that the base station obtains the device of AGW load information, it is characterized in that said device comprises: transmitting element is used for sending the dedicated signaling that carries the AGW load information to each base station that links to each other with AGW.
7. be used to realize that according to claim 6 is said the base station obtains the device of AGW load information, it is characterized in that said transmitting element specifically is used for sending the Keep-Alive-Rsp message that carries the AGW load information to each base station that links to each other with AGW.
8. be used to realize that according to claim 7 is said the base station obtains the device of AGW load information; It is characterized in that; Said device also comprises: adding device is used for adding predefined, as to be used to represent AGW percentage load AGW load field in said Keep-Alive-Rsp message;
Said transmitting element is used for the Keep-Alive-Rsp message after the said adding device processing is sent to said each base station that links to each other with AGW.
9. be used to realize that according to claim 7 is said the base station obtains the device of AGW load information, it is characterized in that said adding device specifically is used for, said AGW load field is added in the said Keep-Alive-Rsp message with the form of label length value (TLV).
10. according to Claim 8 or 9 saidly be used to realize that the base station obtains the device of AGW load information; It is characterized in that; Said device also comprises: receiving element; Be used to receive the Keep-Alive_Req message that send said each base station that links to each other with AGW, and after receiving said Keep-Alive_Req message, start said adding device.
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| CN2010106116520A CN102572949A (en) | 2010-12-28 | 2010-12-28 | Method and device for acquiring AGW (Access Gateway) load information by base station |
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| CN2010106116520A CN102572949A (en) | 2010-12-28 | 2010-12-28 | Method and device for acquiring AGW (Access Gateway) load information by base station |
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Citations (4)
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| CN101114969A (en) * | 2007-08-20 | 2008-01-30 | 中兴通讯股份有限公司 | Control method for implementing signaling transmission in Wimax access network |
| CN101494589A (en) * | 2008-01-22 | 2009-07-29 | 中兴通讯股份有限公司 | Management system and method for transmission resource |
| CN101599888A (en) * | 2008-06-06 | 2009-12-09 | 中兴通讯股份有限公司 | A kind of method for controlling load balance of domestic base station gateway |
| WO2010102574A1 (en) * | 2009-03-11 | 2010-09-16 | Huawei Technologies Co., Ltd. | System and method for initial gateway selection |
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2010
- 2010-12-28 CN CN2010106116520A patent/CN102572949A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101114969A (en) * | 2007-08-20 | 2008-01-30 | 中兴通讯股份有限公司 | Control method for implementing signaling transmission in Wimax access network |
| CN101494589A (en) * | 2008-01-22 | 2009-07-29 | 中兴通讯股份有限公司 | Management system and method for transmission resource |
| CN101599888A (en) * | 2008-06-06 | 2009-12-09 | 中兴通讯股份有限公司 | A kind of method for controlling load balance of domestic base station gateway |
| WO2010102574A1 (en) * | 2009-03-11 | 2010-09-16 | Huawei Technologies Co., Ltd. | System and method for initial gateway selection |
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Application publication date: 20120711 |