CN100499544C - Method for mutual positioning between WiMAX cut-in service network gateways - Google Patents
Method for mutual positioning between WiMAX cut-in service network gateways Download PDFInfo
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- CN100499544C CN100499544C CNB200510101170XA CN200510101170A CN100499544C CN 100499544 C CN100499544 C CN 100499544C CN B200510101170X A CNB200510101170X A CN B200510101170XA CN 200510101170 A CN200510101170 A CN 200510101170A CN 100499544 C CN100499544 C CN 100499544C
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Abstract
The present invention relates to WiMAX accessing service network technique, especially relating to WiMAX accessing service network gateway mutually positional method. It contains Said ASN-GW generating domain name, transmitting said domain name domain name Server domain name server; said domain name server feeding back corresponded gateway IP address to said ASN-GW; ASN-GW according to said gateway IP address positioning target gateway, transmitting said switch request or conversation request. The present invention adopts domain name resolving mode to solve WiMAX accessing service network gateway mutually positional problem; when network composing generating variation, only needing modifying domain name configuration in DNS server without modifying each network solid configuration.
Description
[technical field]
The present invention relates to WiMAX access service network technology, particularly the method for locating mutually between the WiMAX access service network gateway.
[background technology]
Along with the extensive use of the flourish and wireless network of internet service, the WiMAX system has obtained a large amount of application and concern with its good wireless access characteristic.How the WiMAX system is applied to the mobile subscriber, better provides Packet Service between network and the mobile subscriber to transmit or the function of route becomes the new focus of industry research.
WiMAX network architecture system as shown in Figure 1.Wherein, ASN (access service network) is defined as the network function set that the wireless access service is provided for the WiMAX terminal, and ASN has comprised base station (BS) and access service network gateway (ASN-GW) network element.CSN (connectivity serving network) is defined as to the WiMAX terminal IP is provided Connection Service.MSS (mobile subscriber station) is a mobile subscriber equipment, and SS (subscriber station) is a subscriber equipment, and the user uses this devices accessing WiMAX network.CSN is the network equipment of the NSP (Network Service Provider Internet Service Provider) that belongs to, and an ASN can connect a plurality of CSN.Can be that multi-to-multi connects between BS and the ASN-GW, in Fig. 1, ASN-GW1 can connect BS1 and BS2 simultaneously, and BS1 can be connected on ASN-GW1 and the ASN-GW2 simultaneously.
MSS/SS inserts the BS that uses and is called serving BS (Serving BS).For the MSS/SS that uses certain serving BS broadcasts to insert, and the ASN-GW of R6 interface is arranged between this BS, be called gateway (ServingASN-GW), for example ASN-GW1 just is to use the gateway of the MSS/SS that BS1 or BS2 insert among Fig. 1.Provide the ASN-GW of the Interface R3 between the R3 of the HA from ASN to CSN to be called anchor ASN-GW (AnchorASN-GW).Anchor ASN-GW among Fig. 1 is a logic entity, and the logic entities such as ASN-GW1, ASN-GW2 among itself and Fig. 1 may reside in the identical or different physical entity.When anchor ASN-GW was present in the identical physical entity with service ASN-GW, interface between the two belonged to the device interior interface, not necessarily will use the standard Interface R4.
From data surface, the grouping busihess data of descending MSS/SS newspaper, is sent among the ASN by the Interface R3 between the anchor ASN-GW HA and the ASN from the HA (home agent) of CSN.After the grouping busihess data newspaper of descending MSS/SS enters ASN, be sent to the service ASN-GW of MSS/SS through the Interface R4 of ASN inside, and send on the MSS/SS through the R6 interface between inner ASN-GW of ASN and the BS and the R1 interface between BS and the MSS/SS data MSS/SS by service ASN-GW.Upstream data then is delivered to the CSN along opposite path from MSS/SS and reaches end subscriber.As mentioned above, the data path (Data Path) that corresponding uplink and downlink is all arranged for each Business Stream of each MSS/SS in the interface of ASN inside, these all can be set up according to the qos requirement of each Business Stream and the employing mode of data path when each Business Stream is set up.When this service ending, when just Business Stream is ended, just need to discharge corresponding data path.
When MSS/SS may move to the area of coverage of another BS from the area of coverage of a BS in moving process, and serving BS broadcasts and target BS be when belonging to same ASN GW, and the switching of generation is called R6 interface mobility and switches.When MSS/SS may move to the area of coverage of another BS from the area of coverage of a BS in moving process, and serving BS broadcasts and target BS be when belonging to different ASN GW, and the switching of generation is called the Interface R4 mobility and switches.As shown in Figure 2, before Interface R4 takes place switching, MSS/SS uses the BS2 access network, and the link by overstriking is connected to CSN.As shown in Figure 3, after the generation Interface R4 switched, MSS/SS used the BS3 access network, and MSS/SS is connected to CSN by the link of overstriking.Can see that MSS/SS carries out data by new service ASN-GW and the Interface R4 data path between the anchor ASN-GW and transmits.The Interface R4 switching flow as shown in Figure 4, as can be seen, gateway in step 2 (Serving ASN-GW) needs localizing objects gateway (Target ASN-GW); In step 11, target ASN-GW needs positioning service ASN-GW, promptly has the selection problem of gateway to intended gateway.
The not clear and definite definition service ASN-GW localizing objects ASN-GW how of agreement at present, and target ASN-GW is positioning service ASN-GW how.Feasible a kind of scheme is to dispose relative ASN-GW by the ID according to BS in ASN-GW: directly according to address or the ID of target BS ID configuration target ASN-GW, be used for switching flow localizing objects ASN-GW in service ASN-GW; In target ASN-GW,, be used for switching flow positioning service ASN-GW directly according to address or the ID of serving BS broadcasts ID configuration service ASN-GW.The shortcoming of this method is: for the multi-to-multi networking mode of BS and ASN-GW, and configuration meeting more complicated, and when the network composition changes, need to revise the configuration of a lot of network entities, in case the incorrect failure that will cause switching flow of configuration modification.
Another feasible scheme is the locating information that increases ASN-GW in BS ID: increase the locating information of target ASN-GW in target BS ID, be used for switching flow localizing objects ASN-GW; In serving BS broadcasts ID, increase the locating information of service ASN-GW, be used for switching flow positioning service ASN-GW.The shortcoming of this way is: since in the agreement regulation BSID be the binary number of 48bit, may not have enough space to add the information of ASN-GW among the BS ID, especially for the multi-to-multi networking mode of BS and ASN-GW.Therefore its application is restricted.
[summary of the invention]
The object of the present invention is to provide a kind of easy to implement, be not subjected to network to form between the WiMAX access service network gateway of restriction the method for location mutually.
The technical solution adopted for the present invention to solve the technical problems is: the WiMAX access service network gateway (method of location mutually between ASN-GW), comprise the steps: that described gateway ASN-GW receives the handoff request message that serving BS sends, and comprises the identification information of target BS in the described handoff request message; Identification information according to target BS in the described handoff request message generates domain name, and domain name is sent to name server; What reception domain name server returned returns the gateway ip address corresponding with domain name to described ASN-GW; ASN-GW is according to the IP address location intended gateway ASN-GW of the gateway of described correspondence, and sends described handoff request message or conversation request to described intended gateway.
In addition, the present invention also provides the method for locating mutually between another WiMAX access service network gateway ASN-GW, comprise the steps: the conversation request message that intended gateway ASN-GW receiving target base station sends, comprise the identification information of serving BS in the described conversation request message; Identification information according to serving BS in the described conversation request message generates domain name, and domain name is sent to name server; Receive the gateway ip address corresponding that the domain name server returns with domain name; According to the IP address location gateway ASN-GW of the gateway of described correspondence, and send described conversation request message to described gateway.
The present invention adopts the mode of domain name mapping to solve the problem of locating mutually between gateway (ASN-GW) in the WiMAX access service network, reduced the physical arrangements in the network: when the network composition changes, only need revise the domain name configuration on dns server gets final product, do not need to revise the configuration of each network entity, and flexible configuration is not subjected to protocols limit.
[description of drawings]
Fig. 1 is WiMAX network architecture system figure.
Fig. 2 is the employed Data Link Map of MSS/SS before Interface R4 switches.
Fig. 3 is that Interface R4 switches the employed Data Link Map of back MSS/SS.
Fig. 4 is an Interface R4 switching flow schematic diagram.
Fig. 5 is the flow chart of gateway localizing objects gateway among the present invention.
Fig. 6 is the flow chart of intended gateway positioning service gateway among the present invention.
[embodiment]
With specific embodiment the present invention is further elaborated with reference to the accompanying drawings below.
At first introduce the flow process of gateway localizing objects gateway in the Interface R4 switching, as shown in Figure 5:
Step S11 is forwarded to gateway behind the handoff request message that serving BS reception network side or mobile subscriber station (MSS) side related entities are initiated, and comprises the identification information of target BS in the described message;
Step S12, gateway obtain the sign of target BS after receiving described handoff request message, and according to certain rule generation domain name, this domain name are sent to name server (DNS); Need to prove that the generating mode of domain name has multiple, as long as the domain name that gateway (ASN-GW) uses prescriptive procedure to generate has proper configuration in dns server.In actual networking, at certain base station (BS), each ASN-GW preferably uses identical domain name generating mode in the network, the advantage of using the DNS name resolution method to reduce the network entity configuration could be embodied like this.The domain name generating mode that adopts among the present invention is to comprise the sign of target BS and Internet Service Provider's (NSP) sign in domain name.For example the ID of target BS is 0x556677000001, and the ID of NSP is 0x112233, and the domain name of using when then inquiring about this BS corresponding A SN-GW can be: BS556677000001.NSP112233.wimax.
Step S13 returns corresponding gateway ip address to described gateway after the corresponding lists (being domain name mapping) of name server by nslookup and gateway ip address; Because the gateway corresponding with domain name in the tabulation promptly is the gateway of the gateway that is connected with target BS or Internet Service Provider configuration, therefore the IP address of returning may be a plurality of.
Step S14, gateway receives the IP address that name server returns, if a gateway then need be selected as intended gateway according to certain strategy in a plurality of IP address, sends handoff request to described intended gateway again.The strategy of select target gateway has a lot, and the present invention enumerates three kinds of strategies: 1. select a gateway as intended gateway according to the resource and the load condition of each gateway; 2. adopt the mode of polling to select a gateway, promptly each available gateway is carried out polling at every turn as intended gateway; 3. the described gateway that is linked in sequence, select one available as intended gateway, promptly attempt each gateway successively, if first gateway is unavailable, the follow-up gateway of selective sequential again.
Step S15 after the intended gateway handover (mih) functions is received handoff request, transmits handoff request to the target BS handover (mih) functions.
Later step is same as the prior art.
Introduce the flow process of intended gateway positioning service gateway in the Interface R4 switching below, as shown in Figure 6, flow process is similar to the flow process of gateway localizing objects gateway as can be seen:
Step S21, target BS find the not session information of this MSS/SS after receiving the switching indication of network side or the initiation of MSS/SS side related entities, so send the conversation request message to intended gateway, comprise the identification information of serving BS in this message;
Step S22, intended gateway obtain the sign of serving BS after receiving described conversation request message, and according to certain rule generation domain name, this domain name are sent to DNS; Need to prove that the generating mode of domain name has multiple, as long as the domain name that ASN-GW uses prescriptive procedure to generate has proper configuration in dns server.In actual networking, at certain BS, each ASN-GW preferably uses identical domain name generating mode in the network, the advantage of using the DNS name resolution method to reduce the network entity configuration could be embodied like this.The domain name generating mode that adopts among the present invention is to comprise the sign of serving BS broadcasts and Internet Service Provider's (NSP) sign in domain name.
Step S23 returns corresponding gateway ip address to described intended gateway after the corresponding lists (being domain name mapping) of name server by nslookup and gateway ip address; Because the gateway corresponding with domain name in the tabulation promptly is the gateway of the gateway that is connected with gateway or Internet Service Provider configuration, therefore the IP address of returning may be a plurality of.
Step S24, intended gateway receives the IP address that name server returns, if a plurality of IP address, then need to adopt certain strategy (adopting the mode of parallel or serial) to send MSS/SS or its conversation request message to all possible gateway, this MSS/SS inserts the gateway that uses can return MSS/SS or its session information response.
Later step is with of the prior art identical.
Like this, when the network composition changes, only need revise the domain name configuration and get final product on dns server, not need to revise the configuration of each network entity, flexible configuration is not subjected to protocols limit.
Claims (11)
1, the method for locating mutually between WiMAX access service network gateway ASN-GW is characterized in that, comprises the steps:
Gateway ASN-GW receives the handoff request message that serving BS sends, and comprises the identification information of target BS in the described handoff request message;
Identification information according to target BS in the described handoff request message generates domain name, and domain name is sent to name server;
Receive the gateway ip address corresponding that the domain name server returns with domain name;
According to the IP address location intended gateway ASN-GW of the gateway of described correspondence, and send described handoff request message to described intended gateway.
2, method according to claim 1 is characterized in that: the identification information that comprises the Internet Service Provider in the domain name of described generation.
3, method according to claim 1 is characterized in that: obtain corresponding IP gateway address by the nslookup and the corresponding lists of gateway ip address.
4, method according to claim 1 is characterized in that: the gateway of described correspondence is with target BS the gateway that is connected to be arranged, or the gateway of NSP configuration.
5, method according to claim 1, it is characterized in that: when the gateway ip address corresponding with domain name that returns when the domain name server was two or more, gateway selected a gateway as intended gateway according to the resource and the load condition of each gateway.
6, method according to claim 1 is characterized in that: when the gateway ip address corresponding with domain name that returns when the domain name server was two or more, gateway adopted the mode of polling to select a gateway as intended gateway.
7, method according to claim 1 is characterized in that: the gateway ip address corresponding with domain name that returns when the domain name server be during for two or more, the gateway described gateway that is linked in sequence, select one available as intended gateway.
8, the method for locating mutually between WiMAX access service network gateway ASN-GW is characterized in that, comprises the steps:
The conversation request message that intended gateway ASN-GW receiving target base station sends comprises the identification information of serving BS in the described conversation request message;
Identification information according to serving BS in the described conversation request message generates domain name, and domain name is sent to name server;
Receive the gateway ip address corresponding that the domain name server returns with domain name;
According to the IP address location gateway ASN-GW of the gateway of described correspondence, and send described conversation request message to described gateway.
9, method according to claim 8 is characterized in that: the identification information that comprises the Internet Service Provider in the domain name of described generation.
10, method according to claim 8 is characterized in that: obtain corresponding IP gateway address by nslookup with the corresponding lists of gateway TP address.
11, method according to claim 8 is characterized in that: the gateway of described correspondence is with gateway the gateway that is connected to be arranged, or the gateway of NSP configuration.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200510101170XA CN100499544C (en) | 2005-11-05 | 2005-11-05 | Method for mutual positioning between WiMAX cut-in service network gateways |
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| CNB200510101170XA CN100499544C (en) | 2005-11-05 | 2005-11-05 | Method for mutual positioning between WiMAX cut-in service network gateways |
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| CN1859247A CN1859247A (en) | 2006-11-08 |
| CN100499544C true CN100499544C (en) | 2009-06-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| ATE553585T1 (en) | 2007-05-25 | 2012-04-15 | Nokia Siemens Networks Oy | METHOD, SYSTEM AND DEVICE FOR POSITION UPDATE IN NETWORKS |
| CN101370271B (en) * | 2007-08-15 | 2013-04-24 | 北京三星通信技术研究有限公司 | Method for positioning mobile station MS in WiMAX network |
| CN101370260B (en) * | 2007-08-15 | 2013-01-30 | 北京三星通信技术研究有限公司 | Method for AAA implementing MS location capability negotiation |
| CN101141422B (en) * | 2007-10-26 | 2010-06-09 | 中国电信股份有限公司 | Method and system to access family gateway and family gateway |
| CN101184338A (en) * | 2007-12-17 | 2008-05-21 | 华为技术有限公司 | User access method and gateway equipment in WIMAX system |
| CN102480752A (en) * | 2010-11-23 | 2012-05-30 | 中兴通讯股份有限公司 | Method and system capable of supporting R6 link hot backup |
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