WO2011000317A1 - Procédé et dispositif de compte-rendu d'informations de position d'un terminal d'utilisateur pour comptabilisation hors ligne dans une interopérabilité mondiale des accès hyperfréquences (wimax) - Google Patents

Procédé et dispositif de compte-rendu d'informations de position d'un terminal d'utilisateur pour comptabilisation hors ligne dans une interopérabilité mondiale des accès hyperfréquences (wimax) Download PDF

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Publication number
WO2011000317A1
WO2011000317A1 PCT/CN2010/074831 CN2010074831W WO2011000317A1 WO 2011000317 A1 WO2011000317 A1 WO 2011000317A1 CN 2010074831 W CN2010074831 W CN 2010074831W WO 2011000317 A1 WO2011000317 A1 WO 2011000317A1
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WO
WIPO (PCT)
Prior art keywords
user terminal
information
message
location
location information
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PCT/CN2010/074831
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English (en)
Chinese (zh)
Inventor
刘熠雯
刘俊羿
骆文
Original Assignee
中兴通讯股份有限公司
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Publication of WO2011000317A1 publication Critical patent/WO2011000317A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/52—Network services specially adapted for the location of the user terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • 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

Definitions

  • the invention relates to a user terminal location information reporting technology in offline charging, in particular to a full request! 3 ⁇ 4: Method and device for reporting user terminal location information in offline charging in a WiMAX (World Interoperability for Microwave Access) system.
  • WiMAX Worldwide Interoperability for Microwave Access
  • FIG 1 is a schematic diagram of the structure of a WiMAX system.
  • a prior art WiMAX system generally consists of three parts: a user terminal, an access service network (ASN, Access Service Network), and a connection service network (CSN, Connect). Service Network ).
  • the user terminal includes a fixed station or a mobile station such as a mobile phone, a personal computer, a notebook computer, or a personal digital assistant.
  • the ASN mainly performs the following functions: completing the Layer 2 (L2) connection of the WiMAX terminal, and transmitting the AAA, Authentication, Authorization, Accounting message to the Home-Connect Service Network (H-CSN).
  • L2 Layer 2
  • H-CSN Home-Connect Service Network
  • ASN Network service provider
  • SP Network Access Provider
  • L3 Layer 3
  • the ASN also needs to support the following functions: ASN Anchored Mobility Management (ASN Anchored MM), CSN Anchored Mobility Management (CSN Anchored MM), Paging and Idle Mode (Idle Mode) )operating.
  • ASN Anchored Mobility Management ASN Anchored MM
  • CSN Anchored Mobility Management CSN Anchored MM
  • Idle Mode Idle Mode
  • the AS is also used to manage the IEEE 802.16 air interface to provide wireless access to users in WiMAX systems.
  • 2 is a schematic structural diagram of an ASN.
  • the ASN is composed of at least one base station (BS, Base Station) and one ASN gateway (ASN-GW or AGW, Access Service Network-GateWay), and may include a single ASN- GW or multiple ASN-GWs, where the ASN communicates with the user terminal at the R1 reference point, and communicates with the CSN at the R3 reference point, The R4 reference point is interoperable with another ASN.
  • the operator that manages the CSN is called the NSP.
  • the CS is a combination of network functions.
  • the CSN can be composed of a mobile IP home agent, an AAA proxy (AAA Proxy) or an AAA server (AAA Server), a billing server, and an Internet gateway.
  • CS mainly provides the following functions: user session connection, IP address allocation of user terminal, Internet access, provision of AAA service, policy and license control of user terminal, tunnel maintenance between ASN and CSN, billing and settlement of user terminal , roaming between CSNs, mobility management between CSNs, and WiM AX services.
  • the user terminal is always located under the coverage of the wireless signal of a particular base station.
  • the ASN gateway in the ASN is responsible for the mobility management of the user. When the user moves, the AGW faithfully updates the user through the handover process or the location update process. The location information is saved.
  • the user terminal and the base station have a dedicated data channel and a signaling channel connection.
  • the location information of the user terminal can be refined into the signal coverage of one base station in this scenario, and each base station passes through a base station.
  • the identifier (BSID, Base Identifier) is used to identify, and therefore, the location information of the user terminal can be identified by the BSID.
  • the user terminal may enter an idle state (Idle Mode). At this time, there is no direct channel connection between the user terminal and the base station, and the user terminal periodically wakes up from the sleep and listens to the broadcast signal of the base station.
  • a user terminal identifies a location of a user terminal by using a Paging Group Identifier (PGID) in an idle state.
  • PID Paging Group Identifier
  • a paging group physically corresponds to a base station or multiple according to the needs of the networking. Base stations. When the user terminal wakes up and finds that the paging group is changed, it will immediately inform the AGW of its latest location information through the location update, and enter the sleep state again, waiting for the next time to wake up.
  • AGW When the location of the user terminal changes, the AGW can be aware of the change of the location of the user terminal, and the CSN knows nothing about it.
  • a subscriber subscription operator is generally a CSN network operator. When the location of the subscriber changes, the operator I might expect to know this, there are several kinds of fields Scenery:
  • Different base stations may belong to different access network operators, or the base station itself supports different working modes, such as emerging home base stations, etc., because changes in the location of mobile terminals may result in tariff changes, and access networks. The strategy for operators to share expenses has also changed;
  • the real-time location information of the user terminal can be reported to the CSN according to the needs of the operator.
  • the most convenient method is to implement the reporting of the location information of the user terminal by using the intermediate charging message of the offline charging, where the charging message is reported.
  • this accounting server in offline charging, this accounting server is generally an AAA server.
  • the intermediate charging continues in the process in which the user resides in the WiMAX network to use the network resources, and terminates in the user's network retreat behavior. Because the intermediate charging message runs through the generation and demise of a user's session, it can be used to locate the user's location information in real time.
  • the location information of the user has been included, but the location information is not real-time.
  • the triggering of the intermediate charging message is based on the duration interval of the pre-configured intermediate charging, and the intermediate charging message is reported at the time interval to the time.
  • the disadvantages of reporting the location information of the user terminal through the charging message are also obvious. If the location change of the user terminal occurs in the middle of the intermediate charging interval, the location information of the reported user terminal is inaccurate, and most of the information is In the case of inaccuracy, it happens that the intermediate billing interval is timed out when the location changes. This will result in the system side not being able to accurately determine the location information of the user terminal, resulting in inaccurate offline charging. Summary of the invention
  • the main purpose of the present invention is to provide a user in WiMAX offline charging.
  • the method and device for reporting terminal location information are used to report more accurate location information of the user terminal by using the charging message.
  • a method for reporting location information of a user terminal in WiMAX offline charging comprising: accessing a service network, when determining a location information of a user terminal, the current location information of the user terminal is reported to the connection service network CSN by using an charging message .
  • the user terminal location information includes base station identity BSID information or paging group identity PGID information.
  • the ASN gateway determines the location change of the user terminal, specifically:
  • the ASN gateway obtains BSID information or PGID information of the user terminal, and compares with the stored BSID information or PGID information, and the BSID information or the PGID information changes to determine a location information change of the user terminal;
  • the ASN gateway when the ASN gateway receives the location update message of the user terminal, determining that the location information of the user terminal changes.
  • the acquiring, by the ASN gateway, the BSID information or the PGID information of the user terminal includes:
  • the BSID information or the PGID information carried in the location update message is the current BSID information or the PGID information of the user terminal, and the ASN gateway acquires the user.
  • the BSID information or PGID information of the terminal including:
  • the ASN gateway When receiving the encrypted message authentication code CMAC key value update message reported by the base station, the ASN gateway extracts the BSID information of the user terminal from the CMAC key value update message.
  • the method further includes:
  • the ASN gateway negotiates the location information reporting manner of the user terminal with the AAA server of the user terminal, specifically:
  • the ASN gateway carries an indication that the charging message is sent to the AAA server, and indicates that the self-received charging message is sent when the terminal location is changed.
  • the AAA server carries an indication indicating that the ASN gateway needs to use the function of real-time accessing the location of the user terminal by using the charging message in the reply message to the ASN gateway charging message.
  • the charging message includes a remote user dialing authentication RADIUS charging request message or a DIAMETER charging request message.
  • a device for reporting location information of a user terminal in WiMAX offline charging comprising: a determining unit, configured to determine whether a location information of the user terminal changes, and triggers a reporting unit when the change occurs;
  • the reporting unit is configured to report the current location information of the user terminal to the CSN by using a charging message.
  • the user terminal location information includes base station identity BSID information or paging group identity PGID information.
  • the determining unit comprises:
  • An obtaining module configured to acquire BSID information or PGID information of the user terminal
  • a comparing module configured to compare the acquired BSID information or PGID information of the user terminal with currently stored BSID information or PGID information
  • a determining module configured to determine a location information change of the user terminal when the BSID information or the PGID information of the user terminal changes.
  • the determining unit comprises:
  • a receiving module configured to receive a location update message of the user terminal
  • a determining module configured to receive, at the receiving module, a location update message of the user terminal.
  • the location information of the user terminal is determined to be changed, and the BSID information or the PGID information carried in the location update message is the current location information of the user terminal.
  • the acquiring module acquires BSID information of the user terminal by using a CMAC key value update message reported by the base station.
  • the device further includes:
  • a negotiating unit configured to negotiate a location information reporting manner of the user terminal between the ASN gateway and the AAA server of the user terminal;
  • the negotiating unit specifically includes a sending module and a receiving module, where are set in the ASN gateway, where ,
  • a sending module configured to send a charging message to the AAA server; the charging message carries an indication indicating whether the ASN gateway supports reporting the charging message when the terminal location changes;
  • the receiving module is configured to receive a reply message of the AAA server charging message, where the reply message carries an indication that the ASN gateway needs to use the function of reporting the location of the user terminal in real time through the charging message.
  • the charging message comprises a RADIUS Accounting Request message or a DIAMETER Accounting Request message.
  • the ASN gateway when the location information of the user terminal is changed, notifies the CSN of the newly changed location information by using the charging message, so that the CSN can know the current location information of the user terminal in time, which facilitates the CSN to update the user terminal in time.
  • Billing strategy formulating new policies based on the behavior of user terminals.
  • the invention can realize accurate and timely reporting of the location information of the user terminal, and is simple and practical.
  • Figure 1 is a schematic diagram showing the structure of a WiMAX system
  • FIG. 2 is a schematic structural diagram of an ASN
  • FIG. 3 is a flowchart of a method for reporting a location information of a user terminal by an AGW and an AAA according to the present invention
  • 4 is a flowchart of Embodiment 1 of a method for reporting location information of a user terminal according to the present invention
  • FIG. 5 is a flowchart of Embodiment 2 of a method for determining location information of a user terminal according to the present invention
  • FIG. 7 is a flowchart of Embodiment 4 of a method for reporting location information of a user terminal according to the present invention
  • FIG. 8 is a schematic structural diagram of a device for reporting location information of a user terminal according to the present invention
  • a schematic diagram of a composition of the invention determining unit
  • FIG. 10 is a schematic diagram showing another composition structure of the determining unit of the present invention. detailed description
  • the ASN gateway supports the location information reported by the user terminal through the charging message, but the charging message reporting has a certain time interval, and the location information of the user terminal reported by the ASN gateway is only in the The report is accurate at the time. After the location change of the user terminal, the CSN will not be able to know the current location information of the user terminal. Only when the next charging message is reported, the location information of the user terminal will be reported to the CSN during the interval of the charging message. The location update status of the mobile terminal, the CSN will be unaware, which is very detrimental to the control of the user terminal.
  • the ASN gateway learns that the location information of the user terminal is changed, that is, the newly changed location information is notified to the CSN by the charging message, so that the CSN can know the current location information of the user terminal in time, which facilitates the CSN to update the user terminal in time.
  • the billing strategy formulating a new strategy based on the behavior of the user terminal, and the like.
  • FIG. 3 is a flowchart of a method for reporting a location information of a user terminal by an AGW and an AAA according to the present invention.
  • the network side access gateway AGW negotiates with the AAA (in the CSN) whether it needs to pass the location information of the user terminal.
  • the process of reporting the current location information of the user terminal by the fee message includes the following steps:
  • Step 301 The user terminal (MS, Mobile Station) accesses the WiMAX network, and initiates an initial access authentication process.
  • Step 302 In the initial access authentication, the AGW sends a RADIUS Access Request (RADIUS Access Request) message to the AAA to request authentication, according to the local policy (such as the network management configuration to support the user terminal location change reporting and accounting), in the message Carrying the "Location Change Reporting Billing Support” field (extension field), indicating that the AGW supports the function of reporting the location information of the user terminal in real time through the charging message; the "location change reporting charging support” can be implemented by one bit. For example, the bit position "0" indicates that the position change reporting is not supported, and the "1" indicates "location change reporting charging support”; the RADIUS Access Request message can be extended by extending the RADIUS Access Request message.
  • the RADIUS Access Request message considers that the AGW does not support the ability to report the location information of the user terminal in real time.
  • Step 303 After the initial access authentication succeeds, the AAA sends a RADIUS Access Accept message to the AGW to indicate that the authentication is successful, and the message carries the “Location Change Reporting Accounting Indication” field (extension field).
  • the AGW is required to support the function of reporting the location information of the user terminal in real time through the charging message. If the field is not delivered, the AGW does not need to support this function.
  • the RADIUS Access Request message and the RADIUS Access Accept message need to be redefined. Whether the AGW supports the real-time reporting capability of the user terminal location information and whether the AGW needs to report the location information of the user terminal in real time is implemented by extending the foregoing two messages. Those skilled in the art will appreciate that changing the message format described above is readily accomplished.
  • Step 304 Continue the initial access procedure until the initial access is successfully completed.
  • the above-mentioned steps are the premise of implementing the technical solution of the present invention.
  • the method for reporting the location information of the user terminal of the present invention is directed to the AGW that supports the reporting of the location information of the user terminal, which will be described in detail below.
  • Embodiment 4 is a flowchart of Embodiment 1 of a method for reporting location information of a user terminal according to the present invention. As shown in FIG. 4, the method for determining location information of the user terminal of the present example includes the following steps:
  • Step 401 The BS reports a CMAC (Cipher-based Message Authentication Code) key value update (CM AC_Key_Count_Update) message to the AGW, and performs a CMAC Key Count value update, and the message always carries the user.
  • CMAC Chip-based Message Authentication Code
  • CM AC_Key_Count_Update CMAC Key Count value update
  • Step 402 The AGW returns a CMAC key value update response (CMAC_Key_Count_Update_Ack) message to the BS to confirm that the CMAC Key Count update is completed.
  • CMAC_Key_Count_Update_Ack CMAC key value update response
  • Step 403 The AGW compares the BSID in the CMAC Key Count update message with the BSID information of the user terminal currently saved by the AGW, and if the BSID is inconsistent, updates the BSID information currently saved by the AGW to the BSID in the CMAC Key Count update message. Step 404 is performed, otherwise the current process ends.
  • Step 404 The AGW sends a RADIUS Accounting Req (Interim) message to the AAA, carries the latest BSID information, and the location change indication information, and notifies the location information of the AAA user terminal to change.
  • RADIUS Accounting Req Interim
  • Step 405 AAA responds to the AGW with an intermediate charging response (RADIUS Accounting
  • Interim RADIUS Accounting Req
  • This example describes how to trigger the reporting of user terminal location information by the AGW (essentially the Authenticator of the AGW, one of the functional entities belonging to the AGW) when the user location information is changed.
  • Embodiment 2 describes how to trigger the reporting of user terminal location information by the AGW (essentially the Authenticator of the AGW, one of the functional entities belonging to the AGW) when the user location information is changed.
  • FIG. 5 is a flowchart of Embodiment 2 of a method for reporting location information of a user terminal according to the present invention. As shown in FIG. 5, the method for determining location information of the user terminal includes the following steps:
  • Step 501 The user terminal or the base station triggers the user terminal to enter the idle mode process.
  • Step 502 After the user terminal enters Idle successfully, the AGW sends the RADIUS to the AAA.
  • the Accounting Req (Interim) message carries the current PGID information of the user terminal and the indication information of the Idle, and notifies the AAA user terminal of entering the idle mode and the latest location information (PGID information) after entering the Idle.
  • Step 503 The AAA responds to the AGW with a RADIUS Accounting Response (Interim) message. It is confirmed that the RADIUS Accounting Req (Interim) message has been received, and the current location information (PGID information) of the user terminal is obtained.
  • Interim RADIUS Accounting Req
  • This example shows that when the user terminal enters the idle mode, the form in which the AAA obtains the location information of the user terminal changes, and the BSID information changes to the PGID information, and how to trigger the reporting of the location information of the user terminal.
  • FIG. 6 is a flowchart of Embodiment 3 of a method for reporting location information of a user terminal according to the present invention. As shown in FIG. 6, the method for determining location information of a user terminal includes the following steps:
  • Step 601 The user terminal detects that the paging group identification information where the user terminal is located changes in the idle mode, and immediately triggers the location update process.
  • Step 602 After the location update is successful, the AGW compares the latest PGID information in the location update process with the PGID information currently saved by the AGW. If the PGID information changes, the AGW sends a RADIUS Accounting Req message to the AAA, and carries the latest PGID information, and The location change indication information notifies the AAA user that the location has changed.
  • Step 603 The AAA responds to the AGW with a RADIUS Accounting Response message. Confirm that the RADIUS Accounting Req (Interim) message has been received and the user terminal is obtained. Current location information (PGID information).
  • This example describes how to trigger the reporting of user terminal location information by the AGW (essentially the AGW's Paging Controller, a functional entity) when the location information of the user terminal changes.
  • AGW essentially the AGW's Paging Controller, a functional entity
  • Figure ⁇ is a flowchart of Embodiment 4 of the method for reporting the location information of the user terminal of the present invention. As shown in the figure, the method for reporting the location information of the user terminal of the present example includes the following steps:
  • Step 701 The user terminal or the base station triggers the process of exiting the idle mode.
  • Step 702 After the user terminal successfully exits the Idle, the AGW sends a RADIUS Accounting Req (Interim) message to the AAA, carries the latest base station BSID information, and exits the Idle indication channel, notifying the AAA that the user terminal exits the idle mode, and The latest location information after Idle exits.
  • RADIUS Accounting Req Interim
  • Step 703 The AAA responds to the AGW with a RADIUS Accounting Response (Interim) message. It is confirmed that the RADIUS Accounting Req (Interim) message has been received, and the current location information (PGID information) of the user terminal is obtained.
  • Interim RADIUS Accounting Req
  • This example describes how the location information is changed when the user terminal exits the idle mode.
  • the PGID is changed to the BSID. How to trigger the reporting of the location information of the user terminal.
  • FIG. 8 is a schematic structural diagram of a device for reporting location information of a user terminal according to the present invention.
  • the apparatus for reporting location information of a user terminal of the present invention includes a determining unit 80 and a reporting unit 81, wherein the determining unit 80 is configured to determine a user. Whether the terminal location information changes, the reporting unit 81 is triggered when the change occurs; the reporting unit 81 is configured to report the current location information of the user terminal to the CSN by using the charging message.
  • the apparatus for reporting the location information of the user terminal of the present invention further includes:
  • the negotiating unit 82 is configured to negotiate a location information reporting manner of the user terminal between the ASN gateway and the AAA server of the user terminal.
  • the negotiating unit 82 specifically includes a sending module.
  • the receiving module is disposed in the ASN gateway; wherein, the sending module (not shown) is configured to send a charging message to the AAA server; Instructing the ASN gateway to support an indication of reporting the charging message when the terminal location changes;
  • the receiving module is configured to receive a reply message of the AAA server charging message, where the reply message carries an indication that the ASN gateway needs to use the function of reporting the location of the user terminal in real time through the charging message.
  • negotiation module 82 is not a necessary technical feature for implementing the basic functions of the reporting device of the user terminal location information of the present invention, but optimizes the technical features.
  • FIG. 9 is a schematic structural diagram of a determining unit of the present invention.
  • the determining unit of the present invention includes an obtaining module 801, a comparing module 802, and a determining module 803, where the obtaining module 801 is configured to acquire the user terminal.
  • the comparison module 802 is configured to compare the acquired BSID information or PGID information of the user terminal with the currently stored BSID information or PGID information;
  • the determining module 803 is configured to use the BSID information of the user terminal or The location information of the user terminal is changed when the PGID information changes.
  • the obtaining module 801 obtains the BSID information of the user terminal by using a CMAC key value update message reported by the base station.
  • the charging message includes a RADIUS accounting request message or a DIAMETER charging request message.
  • the reporting device for the location information of the user terminal shown in FIG. 8 is provided to implement the foregoing reporting method of the location information of the user terminal, and the implementation functions of each processing unit and processing module in the figure may refer to the foregoing. It is understood from the related description in the first embodiment to the fourth embodiment.
  • the functions of each unit and each module in the apparatus shown in FIG. 8 can be realized by a program running on a processor, or can be realized by a specific logic circuit.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention porte sur un procédé de rapport d'informations de position d'un terminal d'utilisateur pour une comptabilisation hors ligne dans une interopérabilité mondiale des accès hyperfréquences (WIMAX). Le procédé consiste en ce que : lorsqu'une passerelle de réseau de service d'accès (AGW) confirme une modification d'informations de position d'un terminal d'utilisateur, l'AGW rend compte des informations de position actuelles du terminal d'utilisateur à un réseau de service de connexion (CSN) par l'intermédiaire d'un message de comptabilisation. Un dispositif rend compte des informations de position d'un terminal utilisateur pour une comptabilisation hors ligne dans un WIMAX. Le dispositif comprend : une unité de confirmation (80) confirmant si les informations de position du terminal d'utilisateur sont ou non modifiées, le déclenchement d'une unité de compte-rendu (81) si une modification se produit, une unité de rapport (81) rendant compte des informations actuelles de position du terminal d'utilisateur au CSN par l'intermédiaire d'un message de comptabilisation.
PCT/CN2010/074831 2009-07-03 2010-06-30 Procédé et dispositif de compte-rendu d'informations de position d'un terminal d'utilisateur pour comptabilisation hors ligne dans une interopérabilité mondiale des accès hyperfréquences (wimax) WO2011000317A1 (fr)

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CN200910088506.1A CN101938731B (zh) 2009-07-03 2009-07-03 WiMAX离线计费中用户终端位置信息的上报方法与装置
CN200910088506.1 2009-07-03

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CN115150807B (zh) * 2022-09-06 2022-12-20 北京全路通信信号研究设计院集团有限公司 一种位置管理方法及系统
CN115996364B (zh) * 2023-03-22 2023-06-30 北京首信科技股份有限公司 一种终端实时溯源定位的方法与设备

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CN1960263A (zh) * 2005-11-03 2007-05-09 华为技术有限公司 在WiMAX系统中监控负流量的方法及计费系统
CN101448198A (zh) * 2008-01-31 2009-06-03 中兴通讯股份有限公司 获取WiMAX中在线被监听用户位置信息的系统和方法

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