WO2011137622A1 - 信令跟踪方法、装置和系统 - Google Patents

信令跟踪方法、装置和系统 Download PDF

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Publication number
WO2011137622A1
WO2011137622A1 PCT/CN2010/077273 CN2010077273W WO2011137622A1 WO 2011137622 A1 WO2011137622 A1 WO 2011137622A1 CN 2010077273 W CN2010077273 W CN 2010077273W WO 2011137622 A1 WO2011137622 A1 WO 2011137622A1
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Prior art keywords
tracking
user equipment
signaling
mme
base station
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PCT/CN2010/077273
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English (en)
French (fr)
Inventor
王波
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中兴通讯股份有限公司
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Publication of WO2011137622A1 publication Critical patent/WO2011137622A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18Negotiating wireless communication parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a signaling tracking method, apparatus, and system for implementing air interface signaling based on IMSI (International Mobile Subscriber Identity) in eUTRAN (Evolved UTRAN).
  • IMSI International Mobile Subscriber Identity
  • Signaling tracking refers to the tracking of signaling generated by the mobile phone during the service process and the control of the network side (including the base station and the core network). It is an effective means for the mobile communication system to record and check data. Due to the movement of the UE (User Equipment), its location is not fixed, but its IMSI identity does not change anyway.
  • the LTE system uses a single-layer structure composed of an eNB (Evolved Base Station). Compared with the conventional 3G access network, LTE reduces the RNC (Radio Network Controller) node when the eNB needs to track a certain UE or locate. For a UE problem, IMSI-based signaling tracking is necessary.
  • the UE does not access the IMSI, and after the attachment, it is accessed by the S-TMSI; and the IMSI exists in the NAS message and is invisible to the eNB.
  • the eNB can identify the S-TMSI (Serving Temporary Mobile Subscriber Identity) for the UE, and cannot recognize the IMSI. Therefore, the current eNB cannot complete IMSI-based tracking.
  • S-TMSI Serving Temporary Mobile Subscriber Identity
  • MME Mobility Management Entity, Core Network
  • the MME performs an IMSI tracking-based tracking scheme, in which the MME triggers the eNB to track the UE based on the signaling.
  • the process is as shown in FIG. 1 and includes the following steps:
  • Step 101 The EMS (MME network management) instructs the MME to initiate an MME IMSI-based tracking task activation.
  • Step 102 After receiving the “Bearing Resource Allocation Request” message of the UE, the MME sends the message to the eNB.
  • a "tracking start request" message specifying the tracked SI APID (S1 link number) to trigger the eNB to initiate tracking of the designated UE;
  • Step 103 After receiving the message “Tracking Task Deactivation Request” of the EMS, the MME deactivates Tracking the task and stopping the tracking, sending a "Tracking Task Deactivation Request” message to the eNB; Step 104, the eNB receives the "Tracking Task Deactivation Request” message of the MME, and activates the tracking task according to the tracking task number; or the eNB detects the S1 connection. If it is broken, the tracking will stop automatically.
  • the invention provides a signaling tracking method, device and system, which solves the problem that the signaling tracking information obtained by the signaling tracking is incomplete.
  • An information tracking method including:
  • the evolved base station receives the tracking task parameters delivered by the integrated network management system, where the tracking task parameters include the correspondence between the international mobile user identity identifier of the user equipment that specifies the tracking and the service temporary mobile user identity identifier;
  • the evolved base station identifies the user equipment according to the correspondence between the international mobile subscriber identity and the service temporary mobile subscriber identity, and tracks related signaling of the user equipment, where the signaling includes air interface signaling.
  • the method may further include: before the step of the eNodeB identifying the user equipment according to the correspondence between the international mobile subscriber identity and the serving temporary mobile subscriber identity, the evolved base station saves the tracking task parameter.
  • the evolved base station identifies the user equipment according to the correspondence between the international mobile subscriber identity and the service temporary mobile subscriber identity, and the step of tracking the related signaling of the user equipment may include: the evolved base station identifies the user equipment according to the service temporary mobile subscriber identity, and Track the related signaling of the user equipment.
  • the air interface signaling may be a user equipment radio resource control protocol connection request or a user equipment radio resource control protocol connection response; the evolved base station identifies the user equipment according to the correspondence between the international mobile subscriber identity and the service temporary mobile subscriber identity, and identifies the user equipment to the user equipment.
  • the step of tracking the related signaling may include: identifying the user equipment by using the service temporary mobile user identity when the user equipment has been registered in the current cell tracking area, and tracking related signaling of the user equipment; or, the user equipment is not When the current cell tracking area is registered, a random value is used as the user equipment identifier.
  • the method may further include: the integrated network management device sends a tracking task parameter to the MME, indicating the MME root The user equipment is tracked according to the tracking task parameters; the MME performs signaling tracking on the user equipment according to the tracking task parameters.
  • the signaling may be a user equipment attach request or a user equipment attach response;
  • the step of the MME performing signalling tracking on the user equipment according to the trace task parameter may include: identifying, by the international mobile user identity, when the user equipment is not registered in the current cell tracking area The user equipment, and the related signaling of the user equipment is tracked; or, when the user equipment is already registered, the user equipment is identified by the global unique temporary identifier, and the related signaling of the user equipment is tracked, and the global unique temporary identifier is carried. There is a service temporary mobile user identity.
  • the method may further include: the integrated network management notifying the evolved base station of updating the correspondence between the international mobile subscriber identity of the user equipment and the service temporary mobile subscriber identity when the service temporary mobility user identity of the user equipment changes.
  • the invention also provides an evolved base station, comprising:
  • a parameter receiving module configured to receive a tracking task parameter delivered by the integrated network management, where the tracking task parameter includes a correspondence between the international mobile user identity of the user equipment that is tracked and the temporary mobile user identity of the service;
  • a tracking module configured to identify the user equipment according to the correspondence between the international mobile subscriber identity and the service temporary mobile subscriber identity, and track related signaling of the user equipment, where the signaling includes air interface signaling .
  • the parameter receiving module can also be configured to save the tracking task parameters.
  • the present invention further provides a signaling tracking system, including an evolved base station, an integrated network management system, and an MME.
  • the integrated network management system is configured to deliver a tracking task parameter to the evolved base station, where the tracking task parameter includes an international mobile of the user equipment that specifies the tracking.
  • the evolved base station is configured to receive a tracking task parameter that is sent by the integrated network management device, and identify the user equipment according to the correspondence between the international mobile user identity identifier and the service temporary mobile user identity identifier, and perform related signaling on the user equipment. Tracking is performed, and the signaling includes air interface signaling.
  • the integrated network management system may be configured to send a tracking task parameter to the MME, and instruct the MME to perform signaling tracking on the user equipment according to the tracking task parameter.
  • the MME may be configured to perform signaling tracking on the user equipment according to the tracking task parameter.
  • the signaling tracking method, device and system provided by the present invention the NMS sends a tracking task parameter to the eNB, where the tracking task parameter includes a mapping relationship between the IMSI and the S-TMSI of the UE that specifies the tracking, so that the eNB can The corresponding relationship between the IMSI and the S-TMSI identifies the corresponding UE, and the related signaling of the UE is tracked, and the signaling includes air interface signaling, which solves the air interface signaling before the UE accesses the MME or disconnects from the MME. Tracking lost issues ensures the integrity of signaling tracking information.
  • Figure 1 is a flow chart of existing signaling tracking
  • FIG. 2 is a flowchart of a signaling tracking method according to an embodiment of the present invention.
  • step 201 in FIG. 2 is a specific flowchart of step 201 in FIG. 2;
  • step 202 in FIG. 2 is a specific flowchart of step 202 in FIG. 2;
  • Figure 5 is a specific flow chart of step 203 in Figure 2;
  • Figure 6 is a specific flow chart of step 204 in Figure 2;
  • Figure 7 is a specific flow chart of step 205 of Figure 2;
  • FIG. 8 is a schematic structural diagram of an evolved base station according to an embodiment of the present invention.
  • the existing signaling tracking methods have the following problems:
  • the eNB cannot know the IMSI of the UE. Therefore, the UE can only identify the UE through the S-TMSI of the UE and further perform signaling tracking.
  • the S-TMSI of the UE is sent to the eNB only after the UE accesses the core network, so the UE completes.
  • the air interface signaling interaction before the access that is, the Initial UE Message and the previous air interface signaling cannot be tracked; and the eNB stops tracking after the S1 connection is interrupted, resulting in the connection re-establishment request and RRC sent by the subsequent eNB to the UE.
  • the resource control protocol) signaling such as the connection release request message cannot be tracked, and thus the signaling tracking information obtained by performing signaling tracking on the UE is incomplete.
  • an embodiment of the present invention provides a signaling tracking method, using the The eNB can identify the UE through the IMSI, complete the tracking of the air interface signaling, and solve the problem that the signaling tracking information obtained by the UE tracking is incomplete.
  • the process of using the method to complete the signaling tracking is as shown in FIG. 2 . , including:
  • Step 201 The MS obtains the correspondence between the specified IMSI and the S-TMSI through the EMS.
  • the specific step is as shown in FIG. 3, and includes:
  • Step 2011 The NMS specifies that the IMSI of the UE needs to be tracked.
  • Step 2012 The NMS requests the EMS to correspond to the S-TMSL corresponding to the IMSI according to the IMSI.
  • the EMS forwards the request to the MME, and the MME returns the S-TMSL corresponding to the requested IMSI.
  • Step 2014 The NMS saves the correspondence between IMSI and S-TMSI.
  • Step 202 The NMS instructs the MME to perform a tracking task, and sends the tracking task identifier (ID) and the tracking task parameter to the MME of the corresponding area by using the EMS;
  • Step 2021 The NMS sends the tracking task parameter to the MME through the EMS, and instructs the MME to perform signaling tracking on the corresponding user equipment, where the parameter includes the IMSI of the specified UE.
  • the MME that needs to perform signaling tracking is selected by the NMS, and the EMS is used to indicate to the corresponding MME.
  • Step 2022 The MME identifies that the IMSI is tracked and saves the tracking task parameter, and the MME identifies the tracked UE by using the S-TMSI corresponding to the IMSI or the IMSI as the identifier, and starts tracking.
  • the MME saves a tracking task record, which includes the tracking task ID and the corresponding tracking task parameters, so that the IMSI is identified.
  • Step 2023 The MME returns an indication of the NMS through the EMS, and notifies the NMS that the tracking task is successfully activated.
  • the UE Attach Request is a NAS (Network Access Service) message, and can only be tracked by the MME.
  • Case 1 If the UE is powered on for the first time, the IMSI is used as the UE identifier, and the MME uses the IMSI as the identifier to trace the UE;
  • GUTI is calculated based on the MME identity and S-TMSI.
  • the Initial Context Setup Request and subsequent signaling are tracked by the MME according to the existing full network element signaling tracking scheme.
  • Step 203 The NMS sends the tracking task parameters to all the eNBs in an area through the eNB network management.
  • the step is synchronized with the step 202.
  • the specific process is as shown in FIG. 5, and includes:
  • Step 2031 The NMS sends the tracking task parameter to the designated eNB through the eNB network management, where the parameter includes the S-TMSL corresponding to the IMSI of the specified UE.
  • Step 2032 The eNB saves the IMSI and S-TMSI correspondence and the tracking task parameters, and converts the IMSI-based tracking into the tracking of the S-TMSI.
  • the eNB identifies the tracked UE by using the S-TMSI as the identifier, and starts. Tracking.
  • Step 2033 The eNB informs the NMS that the task activation is successful through the eNB network management.
  • Case 1 If the UE is registered in the current cell TA, the S-TMSI is used as the UE identifier, and the eNB tracks the UE through the S-TMSI. ;
  • Case 2 If there is no registration, the first time the power is turned on, the UE is identified by a random value, and the eNB cannot trace the UE.
  • Step 204 The NMS sends an IMSI-based tracking task deactivation request to the MME and the eNB through the EMS and the eNB network management.
  • This step is specifically as shown in FIG. 6, and includes:
  • Step 2041 The NMS deactivates the tracking task for the eNB by using the eNB network management, and the eNB deletes the correspondence between the saved IMSI and the S-TMSI and the tracking task parameter.
  • Step 2042 The NMS deactivates the tracking task by using the EMS to the MME, and the MME identifies the IMSI as not tracking and deletes the saved tracking task parameter.
  • FIG. 7 which includes:
  • the target MME sends the changed IMSI and S-TMSI correspondence to the eNB through the NMS.
  • Step 701 For the source MME, since the UE is switched out from the source MME, the source MME automatically releases the S-TMSI corresponding to the IMSI.
  • Step 702 For the target MME, the UE is switched in from the target MME, and the target MME re-allocates the S-TMSI for the IMSI.
  • Step 703 The target MME reports the changed IMSI and the S-TMSI relationship to the NMS through the EMS.
  • Step 704 The NMS updates the IMSI and S-TMSI correspondences of all the eNBs in the specified area by using the eNB.
  • the signaling tracking information reported by the eNB carries the S-TMSI of the UE
  • the signaling tracking information reported by the MME carries the IMSI of the UE
  • the NMS corresponds to the same IMSI according to the correspondence between the S-TMSI and the IMSI.
  • the multiple signaling tracking information is summarized to obtain complete signaling tracking information of the specified UE, including information of air interface signaling.
  • the present invention also provides an eNB, whose structure is as shown in FIG. 8, and includes:
  • the parameter receiving module 801 is configured to receive a tracking task parameter that is sent by the NMS, where the tracking task parameter includes a correspondence between the IMSI and the S-TMSI of the UE that specifies the tracking;
  • the tracking module 802 is configured to identify a corresponding UE according to the correspondence between the IMSI and the S-TMSI, and track related signaling of the UE, where the signaling includes air interface signaling.
  • the parameter receiving module 801 is further configured to save the tracking task parameter.
  • the present invention also provides a signaling tracking system, including an eNB, an NMS, and an MME;
  • the eNB is configured to receive a tracking task parameter that is sent by the NMS, where the tracking task parameter includes a mapping relationship between an IMSI and an S-TMSI of the UE that is to be tracked, and identifies a corresponding relationship according to the correspondence between the IMSI and the S-TMSI.
  • the tracking task parameter includes a mapping relationship between an IMSI and an S-TMSI of the UE that is to be tracked, and identifies a corresponding relationship according to the correspondence between the IMSI and the S-TMSI.
  • UE tracking related signaling of the UE, Signaling includes air interface signaling.
  • the NMS further sends a tracking task parameter to the MME, and instructs the MME to perform signaling tracking on the corresponding UE according to the tracking task parameter.
  • the MME is configured to perform signaling tracking on the corresponding UE according to the tracking task parameter.
  • the foregoing eNB and the signaling tracking system may be combined with a signaling tracking method provided by the embodiment of the present invention, and the NMS sends a tracking task parameter to the eNB, where the tracking task parameter includes the IMSI and the S of the specified tracking UE.
  • the tracking task parameter includes the IMSI and the S of the specified tracking UE.
  • Corresponding relationship of the TMSI so that the eNB can identify the corresponding UE according to the corresponding relationship between the IMSI and the S-TMSI, and track related signaling of the UE, where the signaling includes air interface signaling, and the solution is solved.
  • the problem of air interface signaling tracking loss before the UE accesses the MME or disconnected from the MME ensures the integrity of the signaling tracking information.
  • all or part of the steps of the foregoing embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the invention is not limited to any particular combination of hardware and software.
  • the various devices/function modules/functional units in the above embodiments may be implemented using a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • Each device/function module/functional unit in the above embodiments can be stored in a computer readable storage medium when implemented in the form of a software function module and sold or used as a standalone product.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the present invention solves the problem that the air interface signaling tracking is lost before the UE accesses the MME or disconnects from the MME, and the integrity of the signaling tracking information is ensured.

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Abstract

本发明提供了一种信令跟踪方法、装置和系统。涉及移动通信领域;解决了信令跟踪得到的信令跟踪信息不完整的问题。该方法包括:演进基站接收综合网管下发的跟踪任务参数,所述跟踪任务参数包含指定跟踪的用户设备的国际移动用户身份标识与服务临时移动用户身份标识的对应关系;所述演进基站根据所述国际移动用户身份标识与服务临时移动用户身份标识的对应关系识别所述用户设备,对所述用户设备的相关信令进行跟踪,所述信令包括空口信令。本发明所提供的技术方案适用于eUTRAN网络中。

Description

信令跟踪方法、 装置和系统
技术领域
本发明涉及无线通信领域,尤其涉及一种在 eUTRAN ( Evolved UTRAN ) 中实现基于 IMSI ( International Mobile Subscriber Identity , 国际移动用户身份 标识) 空口信令的信令跟踪方法、 装置和系统。
背景技术
信令跟踪是指手机在业务进行过程中和网络侧 (包括基站和核心网)控 制消息的交互产生的信令进行跟踪, 是移动通讯系统进行数据记录和查错的 有效手段。 由于 UE (用户设备) 的移动, 其位置不固定, 但不管如何移动, 其 IMSI标识不会改变。 LTE系统釆用由 eNB (演进基站)构成的单层结构, 与传统的 3G接入网相比, LTE减少了 RNC ( Radio Network Controller无线 网络控制器)节点,当 eNB需要跟踪某个 UE或定位某个 UE 问题,基于 IMSI 的信令跟踪就非常必要。 但是, LTE中 UE并不以 IMSI接入, 在附着之后会 以 S-TMSI接入; 而 IMSI存在于 NAS消息中, 对 eNB不可见。 这样, eNB 对于 UE能够识别的是 S-TMSI ( Serving Temporary Mobile Subscriber Identity, 服务临时移动用户身份标识), 不能识别 IMSI。 因此, 目前 eNB无法完成基 于 IMSI的跟踪。
现有技术中由 MME ( Mobility Management Entity, 核心网) 网管激活
MME进行基于 IMSI跟踪的跟踪方案,该方案中由 MME基于信令触发 eNB, 对 UE进行跟踪, 其流程如图 1所示, 包括如下步骤:
步骤 101、 EMS ( MME网管)指示 MME发起 MME基于 IMSI的跟踪 任务激活;
步骤 102、 MME在收到 UE的 "承载资源分配请求"消息后向 eNB发送
"跟踪开始请求"消息, 指定被跟踪的 SI APID ( S1链路号 ) 来触发 eNB启 动对指定 UE的跟踪;
步骤 103、 MME收到 EMS的 "跟踪任务去激活请求"消息后, 去激活跟 踪任务并停止跟踪, 向 eNB发送 "跟踪任务去激活请求"消息; 步骤 104、 eNB收到 MME的 "跟踪任务去激活请求"消息, 按照跟踪任 务号去激活跟踪任务; 或者 eNB检测到 S1连接断掉, 则自动停止跟踪。
发明内容
本发明提供了一种信令跟踪方法、 装置和系统, 解决了信令跟踪得到的 信令跟踪信息不完整的问题。
一种信息跟踪方法, 包括:
演进基站接收综合网管下发的跟踪任务参数, 所述跟踪任务参数包含指 定跟踪的用户设备的国际移动用户身份标识与服务临时移动用户身份标识的 对应关系;
所述演进基站根据所述国际移动用户身份标识与服务临时移动用户身份 标识的对应关系识别所述用户设备, 对所述用户设备的相关信令进行跟踪, 所述信令包括空口信令。
该方法在演进基站根据国际移动用户身份标识与服务临时移动用户身份 标识的对应关系识别用户设备的步骤之前还可包括: 演进基站保存跟踪任务 参数。
演进基站根据国际移动用户身份标识与服务临时移动用户身份标识的对 应关系识别用户设备, 对用户设备的相关信令进行跟踪的步骤可包括: 演进 基站根据服务临时移动用户身份标识识别用户设备, 并对用户设备的相关信 令进行跟踪。 空口信令可以为用户设备无线资源控制协议连接请求或用户设 备无线资源控制协议连接响应; 演进基站根据国际移动用户身份标识与服务 临时移动用户身份标识的对应关系识别用户设备, 并对用户设备的相关信令 进行跟踪的步骤可以包括: 在用户设备已在当前小区跟踪区注册过时, 以服 务临时移动用户身份标识识别用户设备,并对用户设备的相关信令进行跟踪; 或者, 在用户设备未在当前小区跟踪区注册过时, 以一个随机值作为用户设 备标识。
该方法还可包括: 综合网管向 MME下发跟踪任务参数, 指示 MME根 据跟踪任务参数对用户设备进行信令跟踪; MME根据跟踪任务参数对用户设 备进行信令跟踪。 信令可以为用户设备附着请求或用户设备附着响应; MME 根据踪任务参数对用户设备进行信令跟踪的步骤可以包括: 在用户设备未在 当前小区跟踪区注册过时, 以国际移动用户身份标识识别用户设备, 并对该 用户设备的相关信令进行跟踪; 或者, 在用户设备已注册过时, 以全球唯一 临时标识识别用户设备, 对该用户设备的相关信令进行跟踪, 全球唯一临时 标识中携带有服务临时移动用户身份标识。
该方法还可包括: 综合网管在用户设备的服务临时移动用户身份标识发 生变化时, 通知演进基站更新用户设备的国际移动用户身份标识与服务临时 移动用户身份标识的对应关系。
本发明还提供了一种演进基站, 包括:
参数接收模块, 其设置成接收综合网管下发的跟踪任务参数, 所述跟踪 任务参数包含指定跟踪的用户设备的国际移动用户身份标识与服务临时移动 用户身份标识的对应关系;
跟踪模块, 其设置成根据所述国际移动用户身份标识与服务临时移动用 户身份标识的对应关系识别所述用户设备, 对所述用户设备的相关信令进行 跟踪, 所述信令包括空口信令。
参数接收模块还可设置成保存所述跟踪任务参数。
本发明还提供了一种信令跟踪系统, 包括演进基站、 综合网管和 MME; 所述综合网管设置成向演进基站下发跟踪任务参数, 所述跟踪任务参数 包含指定跟踪的用户设备的国际移动用户身份标识与服务临时移动用户身份 标识的对应关系;
所述演进基站设置成接收所述综合网管下发的跟踪任务参数, 并根据所 述国际移动用户身份标识与服务临时移动用户身份标识的对应关系识别用户 设备, 对所述用户设备的相关信令进行跟踪, 所述信令包括空口信令。
综合网管还可设置成向 MME下发跟踪任务参数, 指示 MME根据跟踪 任务参数对用户设备进行信令跟踪; MME可设置成根据跟踪任务参数对用户 设备进行信令跟踪。 本发明提供的信令跟踪方法、 装置和系统, NMS向 eNB下发跟踪任务 参数,所述跟踪任务参数包含指定跟踪的 UE的 IMSI与 S-TMSI的对应关系, 这样, eNB就可以根据所述 IMSI与 S-TMSI的对应关系识别相应的 UE, 对 所述 UE的相关信令进行跟踪, 所述信令包括空口信令, 解决了在 UE接入 MME前或与 MME断连时空口信令跟踪丟失的问题,保证了信令跟踪信息的 完整性。
附图概述
图 1为现有信令跟踪流程图;
图 2为本发明的实施例提供的一种信令跟踪方法的流程图;
图 3为图 2中步骤 201的具体流程图;
图 4为图 2中步骤 202的具体流程图;
图 5为图 2中步骤 203的具体流程图;
图 6为图 2中步骤 204的具体流程图;
图 7为图 2中步骤 205的具体流程图;
图 8为本发明的实施例提供的一种演进基站的结构示意图。
本发明的较佳实施方式
现有的信令跟踪方法存在以下问题:
eNB无法得知 UE的 IMSI,故只能通过 UE的 S-TMSI识别 UE进而进行 信令跟踪, 而 UE的 S-TMSI只有在 UE接入核心网后才会下发给 eNB, 故在 UE完成接入前的空口信令交互, 即 Initial UE Message及之前的空口信令无 法被跟踪; 且当 S1连接中断后 eNB即停止跟踪, 导致的后续 eNB向 UE发 送的连接重建立请求和 RRC (无线资源控制协议)连接释放请求消息等信令 无法被跟踪, 这样, 就造成了对 UE进行信令跟踪得到的信令跟踪信息不完 整。
为了解决上述问题, 本发明的实施例提供了一种信令跟踪方法, 使用该 方法, eNB能够通过 IMSI识别 UE, 完成对空口信令的跟踪, 解决了对 UE 进行信令跟踪得到的信令跟踪信息不完整的问题, 使用该方法完成信令跟踪 的流程如图 2所示, 包括:
步骤 201、 MS通过 EMS向 MME获取指定 IMSI和 S-TMSI的对应关系; 本步骤具体如图 3所示, 包括:
步骤 2011、 NMS中指定需要跟踪 UE的 IMSI。
步骤 2012、 NMS根据该 IMSI向 EMS请求 IMSI对应的 S-TMSL 步骤 2013、 EMS将该请求转发给 MME, MME返回请求的 IMSI对应的 S-TMSL
步骤 2014、 NMS保存 IMSI和 S-TMSI的对应关系。
步骤 202、 NMS指示 MME执行跟踪任务, 将跟踪任务标识(ID )和跟 踪任务参数通过 EMS下发到相应区域的 MME;
本步骤具体如图 4所示, 包括:
步骤 2021、 NMS通过 EMS, 向 MME下发跟踪任务参数, 指示 MME 对相应的用户设备进行信令跟踪, 该参数包含指定 UE的 IMSI;
本步骤中, 通过 NMS选择需要进行信令跟踪的 MME, 并通过 EMS, 向 相应的 MME进行指示。
步骤 2022、 MME标识该 IMSI被跟踪并保存跟踪任务参数, MME对该 跟踪任务以 IMSI或者 IMSI所对应的 S-TMSI为标识对被跟踪 UE进行识别 , 开始进行跟踪;
本步骤中, MME保存一条跟踪任务记录, 这条记录包含跟踪任务 ID和 相应的跟踪任务参数, 这样, 就对 IMSI进行了标识。
步骤 2023、 MME通过 EMS , 回复 NMS的指示, 通知 NMS跟踪任务激 活成功。
需要说明的是, 在跟踪 UE Attach Request (用户设备附着请求 )信令时, 由于 UE Attach Request是 NAS (网络接入服务 )消息, 只能通过 MME来进 行跟踪, 具体分为两种情况: 情况一、如果 UE是第一次开机,则以 IMSI作为 UE标识, MME以 IMSI 为标识艮踪此 UE;
情况二、 如果 UE在当前小区 TA (跟踪区) 已经注册过, 则以 GUTI ( Globally Unique Temporary Identity, 全球唯一临时标识)作为 UE标识, 而 GUTI中带有 S-TMSI, MME以 S-TMSI为标识跟踪此 UE。
GUTI是根据 MME标识和 S-TMSI来计算获得的。
此夕卜, 对于 Initial Context Setup Request (初始会话建立请求)及以后的 信令由 MME根据现有的全网元信令跟踪方案进行跟踪。
步骤 203、NMS将跟踪任务参数通过 eNB网管下发到某个区域所有 eNB; 本步骤与步骤 202同步, 其具体流程如图 5所示, 包括:
步骤 2031、 NMS通过 eNB网管将跟踪任务参数下发到指定 eNB , 在该 参数中包括指定 UE的 IMSI对应的 S-TMSL
步骤 2032、 eNB保存 IMSI和 S-TMSI对应关系以及跟踪任务参数,把基 于 IMSI的跟踪转换为对 S-TMSI的跟踪, eNB对该跟踪任务以 S-TMSI为标 识对被跟踪 UE进行识别, 开始进行跟踪。
步骤 2033、 eNB通过 eNB网管, 通知 NMS跟踪任务激活成功。
特别地,在跟踪 UE RRC Connection Request信令时,具体分为两种情况: 情况一、 如果 UE在当前小区 TA注册过, 则以 S-TMSI作为 UE标识, eNB通过 S-TMSI来跟踪此 UE;
情况二、 如果没有注册, 第一次开机时以一个随机值作为 UE标识, 此 时 eNB无法艮踪此 UE。
步骤 204、 NMS通过 EMS和 eNB网管对 MME和 eNB下发基于 IMSI 的跟踪任务去激活请求;
在不需要再对 UE进行信令跟踪的时候, 需要指示 MME和 eNB停止信 令跟踪, 本步骤具体如图 6所示, 包括:
步骤 2041、 NMS通过 eNB网管对 eNB去激活跟踪任务, eNB删除保存 的 IMSI和 S-TMSI的对应关系和跟踪任务参数。 步骤 2042、 NMS通过 EMS对 MME去激活跟踪任务, MME标识该 IMSI 为未跟踪并删除保存的跟踪任务参数。
此外, 当 UE在不同的 MME间进行接入切换时, 信令跟踪也需要进行 相应的处理, 具体如图 7所示, 包括:
当 UE通过 S1口由源 MME切换到目标 MME引起 S-TMSI发生改变时 , 由目标 MME将变化后的 IMSI和 S-TMSI对应关系通过 NMS告诉给 eNB。
步骤 701、 对于源 MME, 由于 UE是从源 MME切换出 , 源 MME会自 动释放 IMSI所对应的 S-TMSI;
步骤 702、 对于目标 MME, UE是从目标 MME切换入, 目标 MME为 该 IMSI重新分配 S-TMSI;
步骤 703、 目标 MME将变化后的 IMSI和 S-TMSI对应关系通过 EMS主 动上报给 NMS;
步骤 704、 NMS通过 eNB 网管对指定区域内所有 eNB 更新 IMSI和 S-TMSI对应关系。
在 NMS侧, eNB上报的信令跟踪信息中会携带该 UE的 S-TMSI , MME 上报的信令跟踪信息中会携带 UE的 IMSI, NMS根据 S-TMSI和 IMSI的对 应关系,将相同 IMSI对应的多个信令跟踪信息进行汇总,得到指定 UE完整 的信令跟踪信息, 其中包括空口信令的信息。
本发明还提供了一种 eNB , 其结构如图 8所示, 包括:
参数接收模块 801 , 其设置成接收 NMS下发的跟踪任务参数, 所述跟踪 任务参数包含指定跟踪的 UE的 IMSI与 S-TMSI的对应关系;
跟踪模块 802 , 其设置成根据所述 IMSI与 S-TMSI的对应关系识别相应 的 UE, 对所述 UE的相关信令进行跟踪, 所述信令包括空口信令。
进一步地, 所述参数接收模块 801还设置成保存所述跟踪任务参数。 本发明还提供了一种信令跟踪系统, 包括 eNB、 NMS和 MME;
所述 eNB设置成接收所述 NMS下发的跟踪任务参数, 所述跟踪任务参 数包含指定跟踪的 UE的 IMSI与 S-TMSI的对应关系, 并根据所述 IMSI与 S-TMSI的对应关系识别相应的 UE, 对所述 UE的相关信令进行跟踪, 所述 信令包括空口信令。
进一步地,所述 NMS还向所述 MME下发跟踪任务参数,指示所述 MME 根据所述跟踪任务参数对相应的 UE进行信令跟踪;
所述 MME设置成根据所述跟踪任务参数, 对相应的 UE进行信令跟踪。 上述 eNB和信令跟踪系统, 可以与本发明的实施例所提供的一种信令跟 踪方法相结合, NMS向 eNB下发跟踪任务参数, 所述跟踪任务参数包含指 定跟踪的 UE的 IMSI与 S-TMSI的对应关系,这样, eNB就可以根据所述 IMSI 与 S-TMSI的对应关系识别相应的 UE, 对所述 UE的相关信令进行跟踪, 所 述信令包括空口信令,解决了在 UE接入 MME前或与 MME断连时空口信令 跟踪丟失的问题, 保证了信令跟踪信息的完整性。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计 算机程序流程来实现,所述计算机程序可以存储于一计算机可读存储介质中, 所述计算机程序在相应的硬件平台上(如系统、 设备、 装置、 器件等)执行, 在执行时, 包括方法实施例的步骤之一或其组合。
可选地, 上述实施例的全部或部分步骤也可以使用集成电路来实现, 这 些步骤可以被分别制作成一个个集成电路模块, 或者将它们中的多个模块或 步骤制作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬 件和软件结合。
上述实施例中的各装置 /功能模块 /功能单元可以釆用通用的计算装置来 实现, 它们可以集中在单个的计算装置上, 也可以分布在多个计算装置所组 成的网络上。
上述实施例中的各装置 /功能模块 /功能单元以软件功能模块的形式实现 并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。 上述提到的计算机可读取存储介质可以是只读存储器, 磁盘或光盘等。
工业实用性 与现有技术相比,本发明解决了在 UE接入 MME前或与 MME断连时空 口信令跟踪丟失的问题, 保证了信令跟踪信息的完整性。

Claims

权 利 要 求 书
1、 一种信令跟踪方法, 包括:
演进基站接收综合网管下发的跟踪任务参数, 所述跟踪任务参数包含指 定跟踪的用户设备的国际移动用户身份标识与服务临时移动用户身份标识的 对应关系;
所述演进基站根据所述对应关系识别所述用户设备, 对所述用户设备的 相关信令进行跟踪, 所述信令包括空口信令。
2、根据权利要求 1所述的信令跟踪方法, 其在所述演进基站根据所述对 应关系识别所述用户设备的步骤之前还包括:
所述演进基站保存所述跟踪任务参数。
3、 根据权利要求 1所述的信令跟踪方法, 其中, 所述演进基站根据所述 对应关系识别所述用户设备, 对所述用户设备的相关信令进行跟踪的步骤包 括:
所述演进基站根据所述服务临时移动用户身份标识识别所述用户设备, 对所述用户设备的相关信令进行跟踪。
4、 根据权利要求 1所述的信令跟踪方法, 其中,
所述空口信令为用户设备无线资源控制协议连接请求或用户设备无线资 源控制协议连接响应;
所述演进基站根据所述对应关系识别所述用户设备, 对所述用户设备的 相关信令进行跟踪的步骤包括:
在所述用户设备已在当前小区的跟踪区注册过时, 以服务临时移动用户 身份标识识别所述用户设备, 并对所述用户设备的相关信令进行跟踪; 或者, 在所述用户设备未在当前小区的跟踪区注册过时, 以一个随机值作为所 述用户设备的用户设备标识。
5、 根据权利要求 1所述的信令跟踪方法, 还包括:
所述综合网管向核心网 MME下发所述跟踪任务参数, 指示所述 MME 根据所述跟踪任务参数对所述用户设备进行信令跟踪; 所述 MME根据所述跟踪任务参数, 对所述用户设备进行信令跟踪。
6、 根据权利要求 5所述的信令跟踪方法, 其中, 所述信令为用户设备附 着请求或用户设备附着响应;
所述 MME根据所述跟踪任务参数, 对所述用户设备进行信令跟踪的步 骤包括:
在所述用户设备未在当前小区的跟踪区注册过时, 以国际移动用户身份 标识识别所述用户设备, 并对所述用户设备的相关信令进行跟踪; 或者, 在所述用户设备已在当前小区的跟踪区注册过时, 以全球唯一临时标识 识别所述用户设备, 并对所述用户设备的相关信令进行跟踪, 所述全球唯一 临时标识中携带有服务临时移动用户身份标识。
7、 根据权利要求 1所述的信令跟踪方法, 还包括:
所述综合网管在所述用户设备的服务临时移动用户身份标识发生变化 时, 通知所述演进基站更新所述用户设备的国际移动用户身份标识与服务临 时移动用户身份标识的对应关系。
8、 一种演进基站, 包括:
参数接收模块, 其设置成接收综合网管下发的跟踪任务参数, 所述跟踪 任务参数包含指定跟踪的用户设备的国际移动用户身份标识与服务临时移动 用户身份标识的对应关系;
跟踪模块, 其设置成根据所述国际移动用户身份标识与服务临时移动用 户身份标识的对应关系识别所述指定跟踪的用户设备, 对所述用户设备的相 关信令进行跟踪, 所述信令包括空口信令。
9、 根据权利要求 8所述的演进基站, 其中,
所述参数接收模块还设置成保存所述跟踪任务参数。
10、 一种信令跟踪系统, 包括演进基站、 综合网管和 MME; 其中, 所述 综合网管设置成向演进基站下发跟踪任务参数, 所述跟踪任务参数包含指定 跟踪的用户设备的国际移动用户身份标识与服务临时移动用户身份标识的对 应关系; 所述演进基站设置成: 接收所述综合网管下发的跟踪任务参数, 并根据 所接收的跟踪任务参数中的国际移动用户身份标识与服务临时移动用户身份 标识的对应关系识别用户设备,对所识别出的用户设备的相关信令进行跟踪, 所述信令包括空口信令。
11、 根据权利要求 10所述的信令跟踪系统, 其中,
所述综合网管还设置成向所述 MME下发跟踪任务参数,指示所述 MME 根据所述跟踪任务参数对指定跟踪的用户设备进行信令跟踪;
所述 MME设置成根据跟踪任务参数对用户设备进行信令跟踪。
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CN101370228A (zh) * 2008-09-26 2009-02-18 华为技术有限公司 一种网络中用户全网跟踪的方法、系统及装置
CN101562824A (zh) * 2009-05-15 2009-10-21 华为技术有限公司 用户面分析的方法、装置及系统

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