CN102387462B - Location-based service accurately identifies the method and system of user - Google Patents

Location-based service accurately identifies the method and system of user Download PDF

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Publication number
CN102387462B
CN102387462B CN201010268321.1A CN201010268321A CN102387462B CN 102387462 B CN102387462 B CN 102387462B CN 201010268321 A CN201010268321 A CN 201010268321A CN 102387462 B CN102387462 B CN 102387462B
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location
terminal
aaa
nai
location server
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CN102387462A (en
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李道红
骆文
奚介荣
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Shenzhen Zhongxing Communication Technology Service Co., Ltd.
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ZTE Corp
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Priority to PCT/CN2011/076999 priority patent/WO2012028036A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/10—Mobility data transfer between location register and external networks

Abstract

The invention provides a kind of method accurately identifying user in location-based service, including: location server receives the position requests of position requestor, measurement request message is sent to anchoring authentication device, described measurement request message is carried unique mark of terminal to be positioned, described anchoring authentication device, according to the described unique mark carried in described measurement request message, identifies described terminal to be positioned. Present invention also offers the system accurately identifying user in a kind of location-based service. The present invention enough accurately identifies user so that positioning flow correctly performs, and improves user satisfaction.

Description

Location-based service accurately identifies the method and system of user
Technical field
The present invention relates to the communications field, relate more specifically to after user accesses WiMAX network, location-based service accurately identify the method and system of user.
Background technology
With reference to shown in Fig. 1, the WiMAX system of prior art is generally made up of three parts: terminal, access business network (AccessServiceNetwork, ASN) and connection business network (ConnectServiceNetwork, CSN).
ASN mainly performs following function: two layers (L2) completing WiMAX terminal connects, transmission AAA message to the network of H-CSN (ownership CSN), network service operators (NetworkServiceProvider, NSP) select the three layers (L3) with discovery, for WiMAX terminal be connected relaying is provided, tunnel maintenance between RRM, ASN and CSN. Under the scene of movement, ASN also needs to support following function: the mobile management (ASNAnchoredMM) of ASN grappling, the mobile management (CSNAnchoredMM) of CSN grappling, paging and idle pulley (IdleMode) operation.
ASN is additionally operable to management IEEE802.16 air interface, provides wireless access for WiMAX terminal use. ASN is at least by a BS and ASN-GW (AGW, an ASN gateway) composition, it is possible to comprising single ASN-GW or multiple ASN-GW, reference model is as shown in Figures 2 and 3. ASN is in R1 reference point and MS (MobileStation, movement station) intercommunication, in R3 reference point and CSN intercommunication, in R4 reference point and another ASN intercommunication. The operator of management ASN is called NAP (NetworkAccessProvider, network insertion operator).
CSN is the combination of a set of network function, and CSN can be made up of HA (home agent of mobile IP), AAA agency or server (AAAProxy/Server), accounting server, interconnecting gateway equipment etc. As it has been described above, the operator of management CSN is called NSP.
CSN mainly provides following function: end-user session connects, the distribution of the IP address of terminal, Internet access, AAA (authentication and authorization charging) agency or server, terminal use strategy and admissions control, ASN and CSN between tunnel maintenance, the roaming between terminal use's charging and clearing, CSN, the mobile management between CSN and WiMAX business.
Location-based service (LBS, Location-BasedService) reference model in WiMAX network is as shown in Figure 4. LBS framework is the functional mode coexisted with WiMAX network reference model. LBS framework supports that chain of command position measurement, the position measurement of user face, chain of command and user face hybrid position are measured. LS (LocationServer, location server) is positioned at CSN, receives the position requests of LR (LocationRequester, position requests person) trigger position measurement procedure. In roaming scence, vLS is arranged in vCSN, hLS and is arranged in hCSN. LC (LocationController, positioner) is positioned at the AGW of ServingASN, after receiving the location measurement request of LS, and the measurement that trigger position is relevant, and assembling position related data. LA (LocationAgent, location agent) is positioned at BS, is responsible for measurement, collects and reporting measurement data is to LC. LR is the requestor of MS positional information, it is possible to be positioned at outside WiMAX network or WiMAX network, as, it is possible to it is the application server of MS or outside. When LR is outside application server, LR passes through U1 reference point and LS intercommunication.
Location-based service in WiMAX network has two kinds of application models: MS management position and network managed location. MS management position refers to be that MS measures, calculates and use positional information. MS obtains the positional information of BS from the broadcast of BS, thus calculating the positional information of MS, is not related to the scene of other network elements identification user. And network managed location, need each network element of approach can both identify user when triggering, mensuration or reported position.
Network participant position judges and management process, has again three classes: chain of command position measurement, the position measurement of user face, and chain of command and user face hybrid position are measured.
Chain of command position measurement, is that LS obtains measurement by R3 reference point from LC, performs position judgment at LS. LR can be the third party entity of MS or outside.
The position measurement of user face, is assisted information and access network information for position judgment by MS and LS by the transmission measurement of R2 reference point, GPS. Position judgment can complete at LS, or MS completes. MS or external entity all can be asked to LS launch position. In user face position measurement flow process, LS also can obtain some information to AnchorAuthenticator (anchoring authentication device), such as BSID.
The position measurement in mixture control face and user face, LS can user face and chain of command judgment mechanism support, the information of Comprehensive Control face and user's planar survey provides final position judgment for MS.
The chain of command measurement that chain of command measurement relates to when user is in Normal (normally) state is in chain of command measurement during Idle state with user. Its difference is under Idle state, it is necessary to subscriber paging is got up, is further continued for measurement procedure.
The positional information of user should be protected as the privacy of user. LR is carried out performing authentication and authorizing by AAA and LS, to protect the privacy of target MS. In Certificate Authority process, LS obtains the information of mandate and target MS from AAA. As shown in Figure 5. Position measurement flow process for chain of command, after LS obtains the mandate of AAA, the position acquisition flow process of this target MS is initiated to AnchorAuthenticator, AnchorAuthenticator notifies that LC obtains the positional information of MS, LC and BS/LAs, MS obtain the positional information of MS alternately, then pass to LS. As shown in Figure 6 and Figure 7.
Fig. 5 is the WiMAX network location-based service Certificate Authority flow process based on Radius, is briefly outlined below:
Step 501:LR sends location request message to LS, and the information of carrying includes the Identifier (OuterNAI (outer layer network access Identifier) when user accesses) of the Identifier and target MS of LR.LR can be external entity or MS. Can be the position of disposable request target MS, it is also possible to be the position of periodic request target MS.
Step 502:LS sends RadiusAccess-Request message to AAA, carries from the LR attribute received, and LR is authenticated by notice AAA, decides whether to authorize LR to use this service, and positions target MS.
LR certification is passed through by step 503:AAA, returns RadiusAccess-Accept message to LS, and the information of carrying includes: the IP address of AnchorAuthenticator and MS.
Step 504:LS launch position measurement procedure.
Fig. 6 is the chain of command position measurement flow process under Normal state based on MS/BS scanning survey, is briefly outlined below:
Step 601:LR sends LocationRequest location request message, trigger position measurement procedure to LS; LR can be external entity or MS. Can be the position of disposable request target MS, it is also possible to be the position of periodic request target MS.
Step 602:LS and AAA performs certification and the authorization flow of LR, as shown in Figure 5.
Step 603:LS sends RadiusCoARequest message to AnchorAuthenticator, comprises MeasurementRequest measurement request message.
Step 604:AnchorAuthenticator receives the CoARequest message comprising MeasurementRequest measurement request message, return RadiusCoAACK message to LS, comprise the MeasurementRequestAcknowledgement request of measuring and confirm message.
Step 605:AnchorAuthenticator sends the request position measurement of R4MeasurementRequest measurement request message to LC; AnchorAuthenticator and LC may be located at identical ASN, after a handover, AnchorAuthenticator and LC can also be positioned at different ASN, now, R4MeasurementRequest measurement request message goes to LC in needing the ASN between the ASN at ASN and the LC place at AnchorAuthenticator place to R4MeasurementRequest message.
Step 606:LC returns the R4MeasurementRequestAck request of measuring to AnchorAuthenticator and confirms message.
Step 607:LC sends R6MeasurementRequest measurement request message to ServingBS.
Step 608:ServingBS returns the R6MeasurementRequestAck request of measuring to LC and confirms message.
Between step 609:ServingBS and adjacent BS and MS alternately, position scanning and survey calculation are performed, it is possible to calculate can also calculate at BS at MS.
Step 610:ServingBS sends R6MeasurementResponse to LC and measures response message.
Step 611:LC returns R6MeasurementResponseAck to ServingBS and measures response confirmation message.
Measurement report is reported LS, LC by step 612:LC can be transmitted directly to LS, or sends measurement report to LS by the ASN of AnchorAuthenticator and centre.
After step 613:LS receives measurement report, returning LocationResponse position response message to LR, LR can be external entity or MS. If LR needs periodically to obtain the position of MS, then LS needs periodically to trigger LBS flow process (from step 603 to step 613).
Fig. 7 is the chain of command position measurement flow process under Normal state based on BSID, is briefly outlined below:
Step 701:LR sends LocationRequest location request message, trigger position measurement procedure to LS;LR can be external entity or MS. Can be the position of disposable request target MS, it is also possible to be the position of periodic request target MS.
Step 702:LS and AAA performs certification and the authorization flow of LR, as shown in Figure 5.
Step 703:LS sends RadiusCoARequest message to AnchorAuthenticator, comprises MeasurementRequest measurement request message.
Step 704:AnchorAuthenticator receives the CoARequest message comprising MeasurementRequest measurement request message, return RadiusCoAACK message to LS, comprise the MeasurementRequestAcknowledgement request of measuring and confirm message.
The measurement request message that step 705:AnchorAuthenticator receives only asks BSID, AnchorAuthenticator directly to send the AccountingRequest message comprising MeasurementResponse measurement response message to LS, carries BSID.
Step 706:LS receives the AccountingRequest message comprising MeasurementResponse measurement response message, returns the AccountingResponse message comprising MeasurementResponseAck measurement response confirmation message to AnchorAuthenticator.
Step 707:LS returns LocationResponse position response message to LR, and LR can be external entity or MS. If LR needs periodically to obtain the position of MS, then LS needs periodically to trigger LBS flow process (from step 703 to step 707).
In the location-based service of WiMAX network, position measurement flow process relates to AAA, LS network element in CSN, and BS, AnchorAuthenticator, LC network element in ASN, these network elements are required for being capable of identify that target MS, further this user-provided location could be measured service. In above-mentioned chain of command position measurement flow process, R6MeasurementRequest message mutual for BS and the LC in ASN, and the mutual R4MeasurementRequest message of AnchorAuthenticator and LC all carries unique mark of target MS. Notify the CoARequest message of AnchorAuthenticator location measurement request is not then carried unique mark of MS at LS, but carry the Outer-NAI of user. If it is desire to identify target MS according to Outer-NAI, it is feasible for accessing under the scene keeping constant for this Outer-NAI after WiMAX network at MS.
But, MS is in discrimination weight flow process, and Outer-NAI can change. LS cannot know whether MS performs discrimination weight flow process, also the up-to-date Outer-NAI of MS cannot be obtained in real time, therefore, periodically obtain in the scene of target MS position at LS, LS is all the time to identify target MS to the AAA Outer-NAI obtained first, and AnchorAuthenticator is that now, LS and AnchorAuthenticator is inconsistent in order to the information identifying user to identify user with the up-to-date Outer-NAI of user after discrimination weight. Therefore, under above-mentioned scene, AnchorAuthenticator is when receiving the CoARequest message comprising MeasurementRequest message, user's failure can be inquired about, such as following two situation: one is that AnchorAuthenticator can not find and needs terminal to be positioned, this is because the Outer-NAI of this terminal changes, therefore also cannot further to LC, BS launch position measurement procedure; Another is that AnchorAuthenticator may confuse the terminal being positioned, this is because after the Outer-NAI change of original terminal, it is possible to have other-end and take this Outer-NAI.The previous case will cause that positioning flow cannot continue; Latter event can cause the terminal of Wrong localization. No matter which kind of situation, all can cause that positioning flow cannot correctly perform, and causes user satisfaction to decline, be unfavorable for that business is carried out.
Summary of the invention
The invention provides the method and system accurately identifying user in a kind of location-based service, it is possible to accurately identify user so that positioning flow correctly performs, improve user satisfaction.
In order to solve the problems referred to above, the invention provides a kind of method accurately identifying user in location-based service, including:
Location server receives the position requests of position requestor, measurement request message is sent to anchoring authentication device, described measurement request message is carried unique mark of terminal to be positioned, described anchoring authentication device, according to the described unique mark carried in described measurement request message, identifies described terminal to be positioned.
Further, said method also can have the characteristics that, described position requests is disposable position requests or periodic location request.
Further, said method also can have the characteristics that, before described location server sends measurement request message to described anchoring authentication device, also it is authenticated alternately with described AAA authorizing, in described Certificate Authority process, described location server obtains unique mark of described terminal to be positioned from described AAA.
Further, said method also can have the characteristics that, described method also includes, and described AAA obtains unique mark of described terminal to be positioned in the initial access process of described terminal to be positioned.
Further, said method also can have the characteristics that, described method also includes, and after terminal to be positioned described in described anchoring authentication device identification, initiates the position measurement process to described terminal to be positioned.
The present invention also provides for accurately identifying in a kind of location-based service the system of user, and described system includes location server and anchoring authentication device, wherein:
Described location server is used for, and receives the position requests of position requestor, sends measurement request message to anchoring authentication device, carries unique mark of terminal to be positioned in described measurement request message;
Described anchoring authentication device is used for, and according to the described unique mark carried in described measurement request message, identifies described terminal to be positioned.
Further, said system also can have the characteristics that, described position requests is disposable position requests or periodic location request.
Further, said system also can have the characteristics that, described location server is additionally operable to: before sending measurement request message to described anchoring authentication device, is authenticated alternately with described AAA authorizing, in described Certificate Authority process, obtain unique mark of described terminal to be positioned from described AAA.
Further, said system also can have the characteristics that, described anchoring authentication device initiates the position measurement process to described terminal to be positioned after being additionally operable to the described terminal to be positioned of identification.
The present invention also provides for a kind of method accurately identifying user in location-based service, including:
Periodically obtaining in the process of positional information of terminal to be positioned at location server, the Outer-NAI of change, when the outer layer network access Identifier (Outer-NAI) of described terminal to be positioned changes, is notified described LS by AAA;
In the positional information process every time obtaining described terminal to be positioned, described location server sends measurement request message to anchoring authentication device, described measurement request message is carried the outer layer network access Identifier of terminal to be positioned, described anchoring authentication device, according to described outer layer network access Identifier, identifies described terminal to be positioned.
Further, said method also can have the characteristics that, periodically obtaining in the process of positional information of terminal to be positioned at described location server, the Outer-NAI of change, when the Outer-NAI of described terminal to be positioned changes, is notified that described location server includes by AAA:
When described location server receives periodic location request, sending and start periodically to position instruction information to described AAA, instruction starts described terminal to be positioned carries out periodically location;
The Outer-NAI of change when the Outer-NAI of described terminal to be positioned changes, is notified described location server after receiving described beginning periodically location instruction information by described AAA.
Further, said method also can have the characteristics that, described method also includes,
Described location server, when need not periodically obtain the positional information of described terminal to be positioned, sends dwelling period location instruction information to described AAA;
After described AAA receives described dwelling period location instruction information, when stopping at the Outer-NAI change of described terminal to be positioned, the Outer-NAI of change is notified described location server.
The present invention also provides for accurately identifying in a kind of location-based service the system of user, including: authentication and authorization charging (AAA), location server and anchoring authentication device, wherein:
Described AAA is used for: periodically obtains in the process of positional information of terminal to be positioned at described location server, when the outer layer network access Identifier (Outer-NAI) of described terminal to be positioned changes, the Outer-NAI of change is notified described LS;
Described location server is used for: in the positional information process every time obtaining terminal to be positioned, sends measurement request message to anchoring authentication device, carries the outer layer network access Identifier of terminal to be positioned in described measurement request message;
Described anchoring authentication device is used for: according to described outer layer network access Identifier, identifies described terminal to be positioned.
Further, said system also can have the characteristics that, described location server is used for: when receiving periodic location request, sends and starts periodically to position instruction information to described AAA, and instruction starts described terminal to be positioned carries out periodically location;
Described AAA is used for: after receiving described beginning periodically location instruction information, when the Outer-NAI of described terminal to be positioned changes, the Outer-NAI of change is notified described location server.
Further, said system also can have the characteristics that, described location server is additionally operable to: when need not periodically obtain the positional information of described terminal to be positioned, sends dwelling period location instruction information to described AAA;
Described AAA is additionally operable to: after receiving described dwelling period location instruction information, when stopping at the Outer-NAI change of described terminal to be positioned, the Outer-NAI of change is notified described location server.
The method of the invention, by carrying unique mark of terminal to be positioned in measurement request message, uniquely identifies due to this and remains unchanged, and therefore, can accurately find, according to this unique mark, the terminal needing location. In other method of the present invention, by time the OuterNAI of change being sent to location server, reach accurately to find the purpose of the terminal needing location equally. Accurately unique mark of target MS can be obtained from LS, it is thus possible to make the positioning flow of terminal is correctly performed by the inventive method AnchorAuthenticator.
Accompanying drawing explanation
Fig. 1 is WiMAX network basic framework model;
Fig. 2 is ASN network basic framework decomposition model;
Fig. 3 is another basic framework decomposition model of ASN network;
Fig. 4 is the reference model of WiMAX network location-based service;
Fig. 5 is the WiMAX network location-based service Certificate Authority flow process based on Radius;
Fig. 6 is the chain of command position measurement flow process under Normal state based on MS/BS scanning survey;
Fig. 7 is the chain of command position measurement flow process under Normal state based on BSID;
Fig. 8 be the present invention when being initially accessed AAA obtain MS uniquely identify flow chart;
Fig. 9 is that unique mark of aaa authorization MS of the present invention is to the flow chart of LS;
Figure 10 is LS launch position measurement procedure of the present invention;
Figure 11 be LS of the present invention to aaa authentication time carry periodically positioning mark flow process;
Figure 12 is the AAA of the present invention flow process actively notifying Outer-NAI current for target MS to LS;
Figure 13 is the LS of the present invention flow process notifying AAA dwelling period location;
Figure 14 is the present invention periodically positioning mark field schematic diagram.
Detailed description of the invention
The core concept of the present invention is, it is sent in the measurement request message of AnchorAuthenticator carries the unique of target MS (terminal to be positioned) identifies at LS, AnchorAuthenticator uniquely identifies due to this and will not change, so can accurately find the terminal of correspondence; Or, by AAA when the OuterNAI of target MS, AnchorAuthenticator in time the OuterNAI of change is synchronized to LS so that the OuterNAI of the target MS at LS and AnchorAuthenticator place synchronizes, thus can accurately find the terminal of correspondence according to OuterNAI.
The present invention provides a kind of method accurately identifying user in location-based service, including:
Location server receives the position requests of position requestor, measurement request message is sent to anchoring authentication device, described measurement request message is carried unique mark of terminal to be positioned, described anchoring authentication device, according to the described unique mark carried in described measurement request message, identifies described terminal to be positioned. After terminal to be positioned described in described anchoring authentication device identification, initiate the position measurement process to described terminal to be positioned.
Wherein, described position requests is disposable position requests or periodic location request.
Wherein, before described location server sends measurement request message to described anchoring authentication device, being also authenticated alternately with described AAA authorizing, in described Certificate Authority process, described location server obtains unique mark of described terminal to be positioned from described AAA. Described unique mark can be the MAC Address of terminal to be positioned, it is possible to be that other can uniquely identify the information of terminal. Described location server is likely to the unique mark obtaining terminal to be positioned from position requests person.
Wherein, described AAA obtains unique mark of described terminal to be positioned in the initial access process of described terminal to be positioned.
The present invention also provides for a kind of method accurately identifying user in location-based service, including:
Periodically obtaining in the process of positional information of terminal to be positioned at location server, the Outer-NAI of change, when the outer layer network access Identifier (Outer-NAI) of described terminal to be positioned changes, is notified described LS by AAA;
In the positional information process every time obtaining described terminal to be positioned, described location server sends measurement request message to anchoring authentication device, described measurement request message is carried the outer layer network access Identifier of terminal to be positioned, described anchoring authentication device, according to described outer layer network access Identifier, identifies described terminal to be positioned.
Wherein, when described location server receives periodic location request, sending and start periodically to position instruction information to described AAA, instruction starts described terminal to be positioned carries out periodically location;
The Outer-NAI of change when the Outer-NAI of described terminal to be positioned changes, is notified described location server after receiving described beginning periodically location instruction information by described AAA.
Described location server, when need not periodically obtain the positional information of described terminal to be positioned, sends dwelling period location instruction information to described AAA;
After described AAA receives described dwelling period location instruction information, when stopping at the Outer-NAI change of described terminal to be positioned, the Outer-NAI of change is notified described location server.
Specifically, described periodically location instruction information or the dwelling period location instruction information of starting can be carried by periodically positioning mark field. LS carries beginning periodically location instruction information by this periodicity positioning mark field when to aaa authentication.
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains the present invention, is not intended to limit the present invention.
Location measurement method in the following examples is for chain of command measurement procedure, and based on Radius agreement issuing for ID, there is likely to be the agreement of other type in the actual environment and can be used for issuing of ID, such as Diameter etc. The scene that method in literary composition is applied equally in user face position measurement requirements of process AGW functional entity and participates in. It is clear to describe for function, is described here in the way of AnchorAuthenticator and LC divides out, it is achieved time AnchorAuthenticator and LC can also unify. During AnchorAuthenticator and LC unification, the R4 message between AnchorAuthenticator and LC will be omitted.
In order to make figure brief and concise, figure have ignored on key parameter transmission without the forwarding network element affected and associated scenario, as roamed, switching, Idle etc., but these can exist in actual environment.
Embodiment one: when being initially accessed, AAA obtains unique mark of MS
With reference to Fig. 8, describing in the process that user is initially accessed, how AAA obtains unique mark of MS. How unique mark of MS is passed to LS by AAA, it is possible to reference example two.
Step 801:MS enters WiMAX network, initiates to be initially accessed flow process, carries it and uniquely identify MSID;
Step 802: when AGW initiates to be initially accessed authentication request to AAA, uniquely identify MSID by what Radius standard attribute Calling-Station-ID carried MS;
Step 803: after access authentication success, AAA is by RadiusAccess-Accept message informing AGW certification success;
Step 804:MS is successfully accessed WiMAX.
Embodiment two: aaa authorization, and unique mark of MS is sent to LS
With reference to Fig. 9, when describing LR launch position acquisition flow process, how LS obtains unique mark of target MS. How these strategies are continued to inform AnchorAuthenticator by LS, it is possible to reference example three.
Step 901:LR sends location request message to LS, and the information of carrying includes the Identifier (OuterNAI when user accesses) of the Identifier and target MS of LR. LR can be external entity or MS. Can be the position of disposable request target MS, it is also possible to be the position of periodic request target MS.
Step 902:LS sends RadiusAccess-Request message to AAA, carries from the LR attribute received, and LR is authenticated by notice AAA, decides whether to authorize LR to use this service, and positions target MS.
LR certification is passed through by step 903:AAA, returns RadiusAccess-Accept message to LS, and that carries target MS within the message uniquely identifies MSID.Such as, AAA uniquely identifies MSID by what the attribute Calling-Station-ID of Radius protocol definition carried MS.
Step 904:LS launch position measurement procedure, reference example three.
This embodiment assumes that use radius protocol between LS and AAA. Actually can also using Diameter between them, now LS will send WiMAX-LAA-Request, AAA to AAA and respond WiMAXLAA-Answer message to LS. Now, above-mentioned MSID is sent to LS by WiMAXLAA-Answer message by AAA.
Embodiment three: LS launch position measurement procedure
With reference to Figure 10, describing in the process of location-based service, how unique mark of MS is continued to inform AnchorAuthenticator by LS.
Step 1001:LR sends LocationRequest (position requests) message, trigger position measurement procedure to LS; LR can be external entity or MS. Can be the position of disposable request target MS, it is also possible to be the position of periodic request target MS.
Step 1002:LS and AAA performs certification and the authorization flow of LR, referring to embodiment two.
Step 1003:LS sends RadiusCoARequest message to AnchorAuthenticator, comprises MeasurementRequest (measuring request) message, and unique mark MSID of MS is sent to AnchorAuthenticator. Such as, MSID is uniquely identified by what the attribute Calling-Station-ID of Radius protocol definition carried above-mentioned MS.
Step 1004:AnchorAuthenticator receives the CoARequest message comprising MeasurementRequest (measuring request) message, return RadiusCoAACK message to LS, comprise MeasurementRequestAcknowledgement (request of measurement confirms) message.
Step 1005:AnchorAuthenticator finds the information of MS based on unique MSID that identifies of MS, and performs follow-up location measurement process, it is possible to is based on the position measurement of BSID, MS scanning survey or BS and measures; After measurement terminates, report measurement results is to LS.
Step 1006:LS returns LocationResponse (position response) message to LR, and LR can be external entity or MS.
This embodiment assumes that use radius protocol between LS and AnchorAuthenticator. Actually can also use Diameter between them, now LS will send WiMAXLocation-Measurement-Query-Request message to AnchorAuthenticator, and AnchorAuthenticator responds WiMAXLocation-Measurement-Query-Answer message to LS. Now, above-mentioned MSID is sent to AnchorAuthenticator by WiMAXLocation-Measurement-Query-Request message by AAA.
Periodically positioning mark is carried when embodiment four: LS is to aaa authentication
With reference to Figure 11, when describing LS to aaa authentication, carry attribute and show that LR request location target MS is periodic or disposable. AAA records this attribute, the proactive notification LS when the Outer-NAI of follow-up MS changes, it is possible to reference example five.
Step 1101:LR sends location request message to LS, and the information of carrying includes the Identifier (OuterNAI when user accesses) of the Identifier and target MS of LR. LR can be external entity or MS. Can be the position of disposable request target MS, it is also possible to be the position of periodic request target MS.
Step 1102:LS sends RadiusAccess-Request message to AAA, carries from the LR attribute received, and " periodically positioning mark ", and LR is authenticated by notice AAA, decides whether to authorize LR to use this service, and positions target MS.The value of " periodically positioning mark " attribute is referring to embodiment seven.
LR certification is passed through by step 1103:AAA, returns RadiusAccess-Accept message record period positioning mark to LS.
Step 1104:LS launch position measurement procedure, reference example three.
Equally, when using Diameter between LS and AAA, above-mentioned " periodically positioning mark " is sent to AAA by above-mentioned WiMAX-LAA-Request by LS.
Embodiment five: AAA actively notifies the current Outer-NAI of target MS to LS
With reference to Figure 12, describe Outer-NAI when changing, AAA proactive notification LS.
Step 1201:WiMAX terminal use's discrimination weight, Outer-NAI changes.
Step 1202:AAA is by Outer-NAI new for message informing LS for RadiusCoARequest (authorize and change).
Step 1203:LS returns CoAACK to AAA and confirms response.
Equally, when using Diameter between LS and AAA, the Outer-NAI after change can be sent to LS by the suitable message that Diameter defines by AAA.
Embodiment six: LS notifies AAA dwelling period location
With reference to Figure 13, describe LS be no longer necessary to periodically location target MS time, LS notifies AAA dwelling period location, and when the Outer-NAI of follow-up MS changes again, AAA is not longer notified about LS.
Step 1301:LR notifies that LS is no longer necessary to periodically location target MS.
Step 1302:LS sends RadiusAccessRequest to AAA, carries " periodically positioning mark ", it was shown that need not periodically position MS. The value of " periodically positioning mark " attribute is referring to embodiment seven.
Step 1303:AAA returns RadiusAccessAccept response message to LS. When the Outer-NAI of follow-up MS changes, it is not longer notified about LS.
Equally, when using Diameter between LS and AAA, above-mentioned " periodically positioning mark " is sent to AAA by above-mentioned WiMAX-LAA-Request by LS.
Embodiment seven: LS is carried to " periodically positioning mark " field of AAA
" periodically positioning mark " field does not exist in present standard, based on Radius agreement and NWG agreement, gives the definition in Radius message of this field, as shown in figure 14.
Specifically, Figure 14 gives RadiusVendorSpecificAttribute (the Radius manufacturer defined attribute of " periodically positioning mark ", referred to as RadiusVSA, here manufacturer refers to WiMAX), periodically positioning mark (PeriodicLocation) field can carry out following value definition:
0: represent disposable location or need not periodically position (end period location)
1: represent periodically location (starting periodically location)
If adopting Diameter rather than Radius agreement between AGW and AAA, the function of this field should be equally applicable. The value of other each fields is similar with the corresponding field of each attribute of existing Radius message, repeats no more herein.
The present invention provides the system accurately identifying user in a kind of location-based service, and described system includes location server and anchoring authentication device, wherein:
Described location server is used for, and receives the position requests of position requestor, sends measurement request message to anchoring authentication device, carries unique mark of terminal to be positioned in described measurement request message;
Described anchoring authentication device is used for, and according to the described unique mark carried in described measurement request message, identifies described terminal to be positioned.
Wherein, described position requests is disposable position requests or periodic location request.
Wherein, described location server is additionally operable to: before sending measurement request message to described anchoring authentication device, is authenticated alternately with described AAA authorizing, and in described Certificate Authority process, obtains unique mark of described terminal to be positioned from described AAA.
Wherein, described anchoring authentication device initiates the position measurement process to described terminal to be positioned after being additionally operable to the described terminal to be positioned of identification.
The present invention also provides for accurately identifying in a kind of location-based service the system of user, including: authentication and authorization charging (AAA), location server and anchoring authentication device, wherein:
Described AAA is used for: periodically obtain in the process of positional information of terminal to be positioned at described location server, when the outer layer network access Identifier (Outer-NAI) of described terminal to be positioned changes, the Outer-NAI of change is notified described location server;
Described location server is used for: in the positional information process every time obtaining terminal to be positioned, sends measurement request message to anchoring authentication device, carries the outer layer network access Identifier of terminal to be positioned in described measurement request message;
Described anchoring authentication device is used for: according to described outer layer network access Identifier, identifies described terminal to be positioned.
Wherein, described location server is used for: when receiving periodic location request, sends and starts periodically to position instruction information to described AAA, and instruction starts described terminal to be positioned carries out periodically location;
Described AAA is used for: after receiving described beginning periodically location instruction information, when the Outer-NAI of described terminal to be positioned changes, the Outer-NAI of change is notified described location server.
Wherein, described location server is additionally operable to: when need not periodically obtain the positional information of described terminal to be positioned, sends dwelling period location instruction information to described AAA;
Described AAA is additionally operable to: after receiving described dwelling period location instruction information, when stopping at the Outer-NAI change of described terminal to be positioned, the Outer-NAI of change is notified described location server.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.

Claims (4)

1. the method accurately identifying user in a location-based service, it is characterised in that
Periodically obtaining in the process of positional information of terminal to be positioned at location server, the Outer-NAI of change, when the outer layer network access Identifier Outer-NAI of described terminal to be positioned changes, is notified described location server by authentication and authorization charging AAA;
In the positional information process every time obtaining described terminal to be positioned, described location server sends measurement request message to anchoring authentication device, described measurement request message is carried the outer layer network access Identifier of terminal to be positioned, described anchoring authentication device, according to described outer layer network access Identifier, identifies described terminal to be positioned;
Periodically obtaining in the process of positional information of terminal to be positioned at described location server, the Outer-NAI of change, when the Outer-NAI of described terminal to be positioned changes, is notified that described location server includes by described AAA:
When described location server receives periodic location request, sending and start periodically to position instruction information to described AAA, instruction starts described terminal to be positioned carries out periodically location;
The Outer-NAI of change when the Outer-NAI of described terminal to be positioned changes, is notified described location server after receiving described beginning periodically location instruction information by described AAA.
2. the method for claim 1, it is characterised in that described method also includes,
Described location server, when need not periodically obtain the positional information of described terminal to be positioned, sends dwelling period location instruction information to described AAA;
After described AAA receives described dwelling period location instruction information, when stopping at the Outer-NAI change of described terminal to be positioned, the Outer-NAI of change is notified described location server.
3. a location-based service accurately identifies the system of user, it is characterised in that including: authentication and authorization charging AAA, location server and anchoring authentication device, wherein:
Described AAA is used for: periodically obtains in the process of positional information of terminal to be positioned at described location server, when the outer layer network access Identifier Outer-NAI of described terminal to be positioned changes, the Outer-NAI of change is notified described location server;
Described location server is used for: in the positional information process every time obtaining terminal to be positioned, sends measurement request message to anchoring authentication device, carries the outer layer network access Identifier of terminal to be positioned in described measurement request message;
Described anchoring authentication device is used for: according to described outer layer network access Identifier, identifies described terminal to be positioned;
Described location server is used for: when receiving periodic location request, sends and starts periodically to position instruction information to described AAA, and instruction starts described terminal to be positioned carries out periodically location;
Described AAA is used for: after receiving described beginning periodically location instruction information, when the Outer-NAI of described terminal to be positioned changes, the Outer-NAI of change is notified described location server.
4. system as claimed in claim 3, it is characterised in that
Described location server is additionally operable to: when need not periodically obtain the positional information of described terminal to be positioned, sends dwelling period location instruction information to described AAA;
Described AAA is additionally operable to: after receiving described dwelling period location instruction information, when stopping at the Outer-NAI change of described terminal to be positioned, the Outer-NAI of change is notified described location server.
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