WO2012146113A1 - 一种传输rlf数据的方法及装置 - Google Patents

一种传输rlf数据的方法及装置 Download PDF

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Publication number
WO2012146113A1
WO2012146113A1 PCT/CN2012/073143 CN2012073143W WO2012146113A1 WO 2012146113 A1 WO2012146113 A1 WO 2012146113A1 CN 2012073143 W CN2012073143 W CN 2012073143W WO 2012146113 A1 WO2012146113 A1 WO 2012146113A1
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tce
base station
address
rlf
mdt
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English (en)
French (fr)
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王彦
鲍炜
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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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
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/19Connection re-establishment

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for transmitting RLF data.
  • Background Art RLF (Radio Link Failure) data is defined in the LTE (Long Term Evolution) Standard Protocol version 9 (Rel-9).
  • LTE Long Term Evolution
  • Rel-9 Standard Protocol version 9
  • a UE that has the ability to record and report RLF data automatically records related RLF data when RLF or handover fails.
  • the RLF data includes but is not limited to: Wireless in the serving cell and surrounding neighbors when the UE experiences RLF or handover fails.
  • the UE then reports the RLF data to the base station at the appropriate time.
  • the base station performs network self-optimization based on the RLF data.
  • the network sends the MDT configuration parameters to the UE, and the UE performs the MDT data collection task. Thereafter, the UE reports the collected data to the base station.
  • the MDT tasks include the Immediate MDT (MDT for Real-Time Reporting) and the Logged MDT (MDT for Logging) modes.
  • the OAM Operation, Administration and Maintenance
  • the MME sends the MDT configuration parameters (including the TCE (Trace Collection Entity) address) to the base station, and the base station saves the information.
  • the UE performs the specified MDT measurement data collection task in the connection state, and real-time The MDT measurement data is reported to the base station.
  • the base station forwards the MDT measurement data to the corresponding TCE node and stores it according to the TCE address (especially the TCE IP (Internet Protocol) address) stored in the MDT configuration context.
  • the OAM or the MME sends the MDT configuration parameters (including the TCE address) to the base station, and the base station saves the information in the MDT configuration context, and sends some necessary MDT configuration parameters (including the TCE identifier) in the air interface.
  • the base station saves the information in the MDT configuration context, and sends some necessary MDT configuration parameters (including the TCE identifier) in the air interface.
  • the specified MDT data collection task is started, and the MDT measurement data is saved in the UE's memory.
  • the UE reconnects to the network and complies with the MDT measurement data reporting condition, the UE sends the MDT measurement data to the base station according to the indication of the network, and the MDT measurement data includes the TCE identifier.
  • Rel-10 defines RLF data in addition to network self-optimization, it can also be used to minimize drive test, which means that RLF data is considered as a kind of MDT data.
  • RLF data is used to minimize drive test, the operator needs to obtain RLF data.
  • the current standard protocol has not yet defined how operators obtain RLF data.
  • the network does not need to be configured for the base station, so the UE does not have any configuration related to the RLF data.
  • a user terminal having the RLF data collection capability automatically performs an operation when an RLF or a handover failure occurs, and saves related data at the time of failure to the memory of the device.
  • Embodiments of the present invention provide a method and apparatus for transmitting RLF data, which are used to implement transmission and transfer of RLF data.
  • a method of transmitting RLF data includes the following steps:
  • the base station receives the radio link failure RLF data reported by the UE;
  • the base station After receiving the RLF data, the base station searches for the TCE address of the tracking and collecting entity;
  • the base station sends the received RLF data to the TCE node corresponding to the TCE address.
  • a base station comprising:
  • a first interface module configured to receive radio link failure RLF data reported by the UE
  • control module configured to: after receiving the RLF data, look up a TCE address of the tracking collection entity;
  • the second interface module is configured to send the received RLF data to the TCE node corresponding to the TCE address.
  • FIG. 1 is a flowchart of a main method for transmitting RLF data according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for transmitting RLF data to a node corresponding to a default TCE address according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a TCE address in a signaling-based MDT configuration parameter of a base station according to an embodiment of the present invention
  • 4 is a flowchart of a method for a base station to transmit RLF data to a node corresponding to a TCE address by using a TCE address in a management-based MDT configuration parameter according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for a base station to perform area detection specified by an MDT configuration parameter, and transmitting RLF data to a node corresponding to a TCE address according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a method for transmitting RLF data to a node corresponding to a TCE address when the RLF data includes a TCE identifier according to an embodiment of the present invention
  • FIG. 7 is a structural diagram of a base station according to an embodiment of the present invention.
  • the base station after receiving the RLF data, the base station searches for the TCE address of the tracking and collecting entity, and receives the received
  • the RLF data is sent to the TCE node corresponding to the TCE address, so that the operator obtains the RLF data, and then optimizes the network, thereby realizing the transmission and transfer of the RLF data.
  • the main method for transmitting RLF data in this embodiment is as follows:
  • Step 101 The base station receives the radio link failure RLF data reported by the UE 4.
  • Step 102 After receiving the RLF data, the base station searches for the TCE address of the tracking and collecting entity.
  • Step 103 The base station sends the received RLF data to the TCE node corresponding to the TCE address.
  • the OAM can configure a default (or specific) TCE address for the base station. After receiving the RLF data, the base station sends the RLF data to the TCE node corresponding to the default TCE address, where the default TCE address can be an OAM-configured address dedicated to RLF data collection, and the base station receives the configured After the TCE address, the configuration information can be stored locally for easy searching.
  • the base station configures the MDT task for the UE in advance, and sends the MDT configuration parameter to the UE in the connected state through the air interface message.
  • MDT configuration parameters include: pilot measurement threshold, number of reports, reporting interval or MDT task duration and data logging interval.
  • MDT tasks include management-based MDT (management based MDT) and signaling-based MDT (signaling based MDT).
  • management-based MDT means that the MDT measurement data collection task is performed on a cell basis, rather than on a specific user equipment, that is, in the cell or cell list specified by the configuration, all have MDT data collection capabilities.
  • the terminal must perform this task.
  • the configuration information of such MDT operations is directly sent by the OAM (Operation, Management, and Maintenance Entity) to the base station where the designated cell is located through the network management interface.
  • OAM Operaation, Management, and Maintenance Entity
  • signaling-based MDT means that the MDT measurement data collection task is for a specific user or terminal, and only the specified user or terminal, and has the MDT data collection capability, performs this task.
  • the configuration information of the MDT operation is sent by the OAM to the HSS (Home Subscriber Server) node, and then the HSS sends the message to the MME (Mobility Management Entity) through the signaling message, and the MME sends the message to the designated user or terminal through the signaling message.
  • Service base station service The base station then sends the message to the designated user terminal through the air interface signaling message.
  • the MDT configuration parameters include: IMSI (International Mobile Subscriber Identity) or IMEI (International Mobile Equipment Identity), which is used to specify users or terminals participating in MDT data collection.
  • the base station When the base station receives the RLF data reported by the UE, the base station checks whether the signaling-based MDT task corresponding to the UE is saved locally, and if so, the base station searches for the configuration context of the task, obtains the configuration parameter TCE IP address, and sets the RLF data. Forward to the node corresponding to the address.
  • the base station checks whether the management-based MDT task is saved locally, and if so, the base station searches for the configuration context of the task, obtains the configuration parameter TCE IP address, and forwards the RLF data to the TCE.
  • the node corresponding to the IP address is the node corresponding to the IP address.
  • the base station may further check whether at least one cell involved in one or more related cells (including but not limited to the cell in which the failure occurs and the cell attempting to reestablish the connection) involved in the RLF data is within the measurement area specified in the MDT configuration parameter, If yes, the RLF data is forwarded according to the TCE address in the MDT configuration context; otherwise, the RLF data is forwarded to the node corresponding to the default TCE address in the local configuration file.
  • related cells including but not limited to the cell in which the failure occurs and the cell attempting to reestablish the connection
  • the user terminal can obtain the TCE identifier from the configuration information, and include the TCE identifier in the RLF data.
  • the base station queries the corresponding TCE IP address according to the mapping relationship between the TCE identifier and the TCE address, and then forwards the RLF data to the node corresponding to the address.
  • the method for transmitting the RLF data to the node corresponding to the default TCE address specified by the OAM is as follows:
  • the OAM configures the default TCE address for the base station to forward RLF data.
  • Step 201 The base station receives the RLF data reported by the UE.
  • Step 202 After receiving the RLF data, the base station searches for the default TCE address locally.
  • Step 203 The base station sends the received RLF data to the TCE node corresponding to the default TCE address.
  • UE A has an RLF or handover failure in cell 1, and then attempts to reestablish the wireless connection in cell 2, but has not succeeded.
  • the UE records the relevant RLF data, which includes the radio signal measurement values of cell 1 (cell 1) and surrounding neighboring cells, and the identity of cell 2, as well as the geographical location at which the failure occurred.
  • UE A establishes a new radio connection in the cell of e B 3 (base station 3), and sends the RLF data to e B 3 .
  • the default TCE IP address configured in eNB 3 is ipaddx.
  • the eNB 3 forwards the RLF data recorded by the UE A to the node corresponding to ipaddx.
  • UE A experiences RLF or handover failure in cell 1, and then reestablishes the wireless connection in cell 2, and the reconstruction is successful.
  • the UE records the RLF data at the time of failure, which includes the radio signal measurement values of cell 1 and surrounding neighboring cells, and the identity of cell 2, and the geographical location at which the failure occurred.
  • UE A sends the RLF data to the base station eNB 2 where the cell 2 is located.
  • the default TCE IP address configured in eNB 2 is ipaddx.
  • eNB 2 records UE A
  • the RLF data is forwarded to the node corresponding to ipaddx.
  • the method for transmitting, by using the TCE address in the signaling-based MDT configuration parameter, the RLF data to the node corresponding to the TCE address is as follows:
  • the OAM configures the signaling-based MDT task of the corresponding UE.
  • the base station receives the MDT configuration information from the MME, and saves the configuration parameter (including the TCE address) in the local MDT configuration context.
  • Step 301 The base station receives the RLF data reported by the UE.
  • Step 302 After receiving the RLF data, the base station searches whether there is a signaling-based MDT task configured for the UE locally, and if yes, proceeds to step 303; if not, proceeds to step 304.
  • Step 303 The base station searches for a TCE address from the MDT configuration context corresponding to the task.
  • Step 304 The base station searches for the default TCE address from the local configuration information.
  • Step 305 The base station sends the received RLF data to the TCE node corresponding to the found TCE address.
  • the OAM is preconfigured with an MDT task based on UE B's IMEI (e.g., IMEI B), and the MDT configuration information is transmitted to the MME. Therefore, in the process of establishing a network connection, the serving MME transmits the MDT configuration information to the eNB 3 through the S1 (interface) signaling message, and the eNB 3 saves the configuration information into the MDT configuration context, and performs some necessary information through the air interface signaling.
  • the MDT configuration parameters are sent to UE B.
  • UE B generates RLF or handover failure in cell 1, and then attempts to reestablish the radio connection in cell 2, but without success, the UE records relevant RLF data, including radio signal measurement values of cell 1 and surrounding neighbors, and cell 2 The identity, as well as the geographic location at which the failure occurred, and the associated timestamp information.
  • UE B establishes a new wireless connection in the cell of eNB 3.
  • the UE B sends the RLF data to the eNB 3 according to the indication of the base station (ie, the indication of the received MDT configuration parameter).
  • the eNB 3 checks the MDT configuration context corresponding to the IMEI B of the UE B, and the saved TCE address is ipaddy, and then forwards the RLF data to the node corresponding to the ipaddy.
  • the OAM is pre-configured with an MDT task based on UE C-based IMSI (such as IMSI C), and the MDT configuration information is transmitted to the MME. Therefore, in the process of establishing a network connection, the serving MME transmits the MDT configuration information to the eNB 3 through the S1 (interface) signaling message, and the eNB 3 saves the configuration information into the MDT configuration context, and performs some necessary information through the air interface signaling.
  • the MDT configuration parameters are sent to UE C.
  • UE C has RLF or handover failure in cell 1, and then attempts to reestablish the radio connection in cell 2, but without success, UE C records the relevant RLF data, including the radio signal measurement value of cell 1 and surrounding neighbors, and cell 2 The identity, the geographic location at which the failure occurred, and the associated timestamp information. After a period of time, UE C establishes a new wireless connection in the cell of eNB 3. After the connection is successfully established, the UE C sends the RLF data to the eNB 3 according to the indication of the base station (ie, the indication of the received MDT configuration parameter). The eNB 3 checks the MDT configuration context corresponding to the IMSI C of the UE C, and the saved TCE address is ipaddy, and then forwards the RLF data to the node corresponding to the ipaddy.
  • the method for transmitting, by using the TCE address in the management-based MDT configuration parameter, the RLF data to the node corresponding to the TCE address is as follows: Before the base station receives the RLF data, the OAM configures the management-based MDT task for the base station, and the MDT configuration information is transmitted to the base station, and the base station saves the configuration parameters (including the TCE address) to the local MDT configuration context.
  • Step 401 The base station receives the RLF data reported by the UE.
  • Step 402 The base station checks whether a management-based MDT task is saved locally, and if yes, proceeds to step 403, otherwise proceeds to step 404.
  • Step 403 The base station searches for a TCE address from the MDT configuration context corresponding to the task.
  • Step 404 The base station searches for a default TCE address in the local configuration information.
  • Step 405 The base station sends the received RLF data to the TCE node corresponding to the found TCE address.
  • OAM configures MDT tasks for cell 3 and cell 4 of eNB 3 through a network management interface.
  • UE D has RLF or handover failure in cell 1, and then attempts to reestablish the radio connection in cell 2, but without success, the UE records the relevant RLF data, including the radio signal measurement value of cell 1 and surrounding neighboring cells, and the identity of cell 2 , as well as the geographic location at which the failure occurred, and related timestamp information. After a while, 1 ⁇ 0 establishes a new wireless connection in the 6 ⁇ 3 ⁇ 4 3 area 3.
  • UE D After the connection is successfully established, UE D transmits the RLF data to the eNB 3 according to the indication of the base station.
  • eNB 3 checks that there are no 40 pairs of UE D MDT configuration contexts locally (ie, no MDT configuration context for cell 1 and cell 2), but with MTD configuration context based on cell 3 and cell 4, eNB 3 selects an MDT configuration context from it, The saved TCE address is ipaddz, and the RLF data is forwarded to the node corresponding to ipaddz.
  • the base station performs the area detection specified by the MDT configuration parameter, and the method for transmitting the RLF data to the node corresponding to the TCE address is as follows:
  • the OAM configures a management-based or signaling-based MDT task, and the base station saves the configuration parameters (including the TCE address) to the local MDT configuration context.
  • Step 501 The base station receives the RLF data reported by the UE.
  • Step 502 The base station checks whether there is a cell in the cell involved in the RLF data in the area specified by the configuration parameter saved in the MDT configuration context, and if yes, proceeds to step 503, otherwise proceeds to step 504.
  • Step 503 The base station searches for a TCE address in the matching MDT configuration context.
  • the matched MDT configuration context refers to the area of the cell involved in the RLF data specified by the configuration parameters in the MDT configuration context.
  • Step 504 The base station searches for a default TCE address in the configuration information.
  • Step 505 The base station sends the received RLF data to the TCE node corresponding to the found TCE address.
  • OAM pre-configures MDT tasks for cell 3 and cell 4 of eNB 3 through a network management interface.
  • UE E has RLF or handover failure in cell 1, and then attempts to reestablish the radio connection in cell 2, but without success, the UE records the relevant RLF data, which includes the radio signal measurement values of cell 1 and surrounding neighbors, and the cell 2 The identity, as well as the geographic location at which the failure occurred, and the associated timestamp information. After a while, 1 ⁇ £ established a new wireless connection in the 6 ⁇ 3 ⁇ 4 3 cell.
  • UE E After the connection is successfully established, UE E sends the RLF data to the base station according to the indication of the base station.
  • e B 3 checks that there is no MDT configuration context for UE E locally (ie no MDT configuration context for cell 1 and cell 2), but there is an MDT context based on cells 3 and 4, cell 1 is failed due to failure, and an attempt is made to reconstruct The wireless connection is cell 2, which is not in the area specified by the MDT task. Therefore, the eNB 3 forwards the RLF data to the node corresponding to the locally configured default TCE IP address.
  • the method for transmitting the RLF data to the node corresponding to the TCE address is as follows:
  • the base station sends MDT configuration parameters to the UE in advance to configure the MDT task.
  • Step 601 The base station receives the RLF data reported by the UE, where the RLF data includes a TCE identifier.
  • Step 602 The base station searches for a TCE address according to the mapping relationship between the TCE identifier and the TCE address, and the TCE identifier included in the received RLF data.
  • Step 603 The base station sends the received RLF data to the TCE node corresponding to the found TCE address.
  • the MDT configuration parameters sent to the UE on the air interface are not the TCE address but the TCE identifier, and the TDT identifier is also included in the MDT measurement data reported by the UE.
  • the OAM configures a mapping table of TCE identifiers to TCE addresses for each base station. After receiving the MDT measurement data, any base station in the network can query the mapping table according to the TCE identifier carried in the network to obtain the address of the TCE, and then forward the MDT measurement data to the network node corresponding to the TCE address.
  • UE F For example, UE F generates RLF or handover failure in cell 1, and then attempts to reestablish the wireless connection in cell 2, but without success, the UE records relevant RLF data, including radio signal measurement values of cell 1 and surrounding neighbors, and cell 2 The identity, the geographic location at which the failure occurred, and the associated timestamp information. At this time, the Logged MDT configuration information is stored in the UE, and the TCE identifier is also included in the RLF data. After a period of time, UE F establishes a new wireless connection in the cell of eNB 3.
  • the UE F After the connection is successfully established, the UE F sends the RLF data to the eNB 3 according to the indication of the base station, and the eNB 3 queries the local TCE identifier -> TCE IP address mapping table according to the TCE identifier included in the RLF data, and obtains the TCE address is ipaddw, The RLF data is forwarded to the node corresponding to ipaddw.
  • the implementation process of transmitting RLF data is understood by the above description.
  • the process is mainly implemented by the base station.
  • the internal structure and function of the base station are introduced below.
  • the base station in this embodiment includes: a first interface module 701, a control module 702, and a second interface module.
  • the first interface module 701 is connected to the UE and interacts with the UE for various messages, in particular, for receiving radio link failure RLF data reported by the UE.
  • the control module 702 is configured to: after receiving the RLF data, look up the tracking collection entity TCE address. Specifically, the control module 702 searches for a default TCE address by using configuration information; or, searches for a TCE address by using an MDT configuration context.
  • the MDT configuration context is a signaling-based MDT configuration context, or a configuration context for a management-based MDT.
  • Control The module 702 is further configured to check whether a cell in the cell involved in the RLF data is in an area specified by the MDT configuration parameter; if the cell is in the area specified by the MDT configuration parameter, look up the tracking collection entity TCE address. If no cell is in the area specified by the MDT configuration parameter, the control module 702 searches for the default TCE address through the configuration information.
  • the control module 702 searches for the TCE address according to the mapping relationship between the TCE identifier and the TCE address, and the TCE identifier included in the RLF data of the first interface module 701.
  • the second interface module 703 is connected to the network device and interacts with the network device for various messages, in particular, for sending the received RLF data to the TCE node corresponding to the TCE address.
  • the base station after receiving the RLF data, the base station searches for the TCE address of the tracking and collecting entity, and sends the received RLF data to the TCE node corresponding to the TCE address, so that the operator obtains the RLF data, and then optimizes the network to implement the RLF. Transfer and transfer of data.
  • the base station can forward the RLF data through the default TCE address, and can also forward the RLF data through the TCE address in the MDT configuration context.
  • the MDT configuration context can be either a management-based MDT context or a signaling-based MDT context.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本申请公开了一种传输RLF数据的方法,用于实现RLF数据的传输和转存。所述方法包括:基站接收UE报告的无线链路失败RLF数据;基站接收RLF数据后,查找跟踪收集实体TCE地址;基站将接收到的RLF数据发送到TCE地址对应的TCE节点。本申请还公开了用于实现所述方法的装置。

Description

一种传输 RLF数据的方法及装置 本申请要求在 2011年 04月 29日提交中国专利局、 申请号为 201110112557.0、 发明名称为
"一种传输 RLF数据的方法及装置"的中国专利申请的优先权, 其全部内容通过引用结合在本申 请中。 技术领域 本发明涉及通信领域, 特别是涉及传输 RLF数据的方法及装置。 背景技术 在 LTE (长期演进)标准协议版本 9 ( Rel-9 ) 中定义了 RLF (无线链路失败)数据。 具 备记录和上报 RLF数据能力的 UE会在发生 RLF或切换失败时, 自动记录相关的 RLF数 据, 其中 RLF数据包括但不限于: 在 UE发生 RLF 或切换失败时, 服务小区和周围邻区 的无线信号测量值, 失败所在的小区及 UE重建无线连接的相关小区的标识, 失败时 UE 的地理位置信息, 以及时间戳等等。 然后 UE在合适的时候将 RLF数据报告给基站。 基站 根据 RLF数据进行网络自优化。
在 LTE (长期演进)标准协议 Rel-10中, 引入了最小化路测 (Minimisation of Drive Test,
MDT)特性。 网络把 MDT配置参数发送给 UE, UE执行 MDT数据收集任务。 之后, UE 将收集的数据报告给基站。
针对 UE的状态, MDT任务包括 Immediate MDT (实时报告的 MDT )和 Logged MDT (釆用日志记录的 MDT ) 两种模式。
对于 Immediate MDT模式, OAM ( Operations, Administration and Maintenance, 运行、 管理和维护实体)或 MME把 MDT配置参数 (其中包含 TCE ( Trace Collection Entity, 跟 踪收集实体)地址)发送给基站, 基站把这些信息保存到 MDT配置上下文中, 并在空口把 一些必要的 MDT配置参数 (其中不包含 TCE地址和 TCE标识)发送给符合条件的连接态 UE, UE在连接状态执行指定的 MDT测量数据收集任务, 并实时地把 MDT测量数据上报 给基站。 基站收到 MDT测量数据后, 根据 MDT配置上下文中保存的 TCE地址(特别是 TCE IP (因特网协议)地址), 在适当时候把 MDT测量数据转发到对应的 TCE 节点, 并 进行存储。
对于 Logged MDT模式, OAM或 MME把 MDT配置参数 (其中包含 TCE地址)发送 给基站,基站把这些信息保存到 MDT配置上下文中,并在空口把一些必要的 MDT配置参 数 (其中包含 TCE标识)发送给符合条件的连接态 UE。 当 UE释放无线连接进入空闲状态 后, 开始执行指定的 MDT数据收集任务, 把 MDT测量数据保存到 UE的存储器中。 在后 续某个时候, UE重新连接到网络, 并且符合 MDT测量数据上报条件, 则 UE根据网络的 指示把 MDT测量数据发送给基站, MDT测量数据中包含了 TCE标识。
Rel-10中定义了 RLF数据除了用于网络自优化外, 还可以用于最小化路测, 也就是说 将 RLF数据视为 MDT数据的一种。 当 RLF数据用于最小化路测时,运营商需要获得 RLF 数据。但目前的标准协议尚未定义运营商如何获得 RLF数据。在现有协议中,对于 RLF数 据收集, 网络不需要为基站做任何配置, 因此 UE也没有任何跟 RLF数据相关的配置。 具 备 RLF数据收集能力的用户终端在发生 RLF或切换失败时自动地执行操作 , 把失败时的 相关数据保存到设备的存储器内, 当 UE重新连接到网络并且满足上报条件时, 把 RLF数 据发送给当前的服务基站。 由于没有任何配置信息, 基站收到这些数据后, 不知道是否要 转发 RLF数据及将 RLF数据转发到哪里。 发明内容 本发明实施例提供一种传输 RLF数据的方法及装置, 用于实现 RLF数据的传输和转 存。
一种传输 RLF数据的方法, 包括以下步骤:
基站接收 UE报告的无线链路失败 RLF数据;
基站接收 RLF数据后, 查找跟踪收集实体 TCE地址;
基站将接收到的 RLF数据发送到 TCE地址对应的 TCE节点。
一种基站, 包括:
第一接口模块, 用于接收 UE报告的无线链路失败 RLF数据;
控制模块, 用于接收 RLF数据后, 查找跟踪收集实体 TCE地址;
第二接口模块, 用于将接收到的 RLF数据发送到 TCE地址对应的 TCE节点。
本发明实施例中基站接收 RLF数据后, 查找跟踪收集实体 TCE地址, 并将接收到的 RLF数据发送到 TCE地址对应的 TCE节点, 以便运营商获得 RLF数据, 进而对网络进行 优化, 实现了 RLF数据的传输和转存。 附图说明 图 1为本发明实施例中传输 RLF数据的主要方法流程图;
图 2为本发明实施例中将 RLF数据传输到缺省的 TCE地址对应的节点的方法流程图; 图 3为本发明实施例中基站利用基于信令的 MDT配置参数中的 TCE地址, 将 RLF 数据传输到 TCE地址对应的节点的方法流程图; 图 4为本发明实施例中基站利用基于管理的 MDT配置参数中的 TCE地址, 将 RLF 数据传输到 TCE地址对应的节点的方法流程图;
图 5为本发明实施例中基站进行 MDT配置参数指定的区域检测, 将 RLF数据传输到 TCE地址对应的节点的方法流程图;
图 6为本发明实施例中当 RLF数据包含 TCE标识时,将 RLF数据传输到 TCE地址对 应的节点的方法流程图;
图 7为本发明实施例中基站的结构图。 具体实施方式 本发明实施例中基站接收 RLF数据后, 查找跟踪收集实体 TCE地址, 并将接收到的
RLF数据发送到 TCE地址对应的 TCE节点, 以便运营商获得 RLF数据, 进而对网络进行 优化, 实现了 RLF数据的传输和转存。
参见图 1 , 本实施例中传输 RLF数据的主要方法流程如下:
步骤 101: 基站接收 UE 4艮告的无线链路失败 RLF数据。
步骤 102: 基站接收 RLF数据后, 查找跟踪收集实体 TCE地址。
步骤 103: 基站将接收到的 RLF数据发送到 TCE地址对应的 TCE节点。
OAM可以为基站配置缺省的 (或特定的) TCE地址。 当基站接收到 RLF数据后, 把 RLF数据发送到这个缺省 TCE地址对应的 TCE节点,其中,缺省的 TCE地址可以为 OAM 配置的专用于 RLF数据收集的地址, 基站在接收到所配置的 TCE地址后, 可以将该配置 信息存储在本地以便于查找。
或者,基站预先为 UE配置了 MDT任务, 通过空口消息将 MDT配置参数发送给符合 条件的连接态的 UE。 MDT配置参数包括: 导频测量阈值、报告数量、报告间隔或者 MDT 任务持续时间和数据记录间隔等。
MDT 任务包括基于管理的 MDT(management based MDT)和基于信令的 MDT (signaling based MDT)。 所谓基于管理的 MDT, 是指该 MDT测量数据收集任务是以小区 为单位执行的, 而不是针对特定用户设备的,也就是说在该配置指定的小区或小区列表内, 所有具备 MDT数据收集能力的终端都要执行这个任务。 此类 MDT操作的配置信息是由 OAM (运行、 管理和维护实体) 通过网络管理接口直接发送给指定小区所在的基站。 所 谓基于信令的 MDT, 是指该 MDT测量数据收集任务是针对特定用户或终端的, 只有指定 的用户或终端, 并且具备 MDT数据收集能力, 才执行这个任务。 此类 MDT操作的配置信 息是由 OAM发送给 HSS (归属签约用户服务器) 节点, 然后 HSS通过信令消息发送到 MME (移动性管理实体), MME再通过信令消息发送给指定用户或终端的服务基站, 服 务基站再通过空口信令消息发送给指定用户终端。 在此类 MDT任务中, MDT配置参数包 括: IMSI (国际移动用户标识)或 IMEI (国际移动设备标识), 用于指定参与 MDT数据 收集的用户或终端。
当基站收到 UE上报的 RLF数据时, 基站检查本地是否保存有对应该 UE的基于信令 的 MDT任务, 若有, 则基站查找该任务的配置上下文, 获取配置参数 TCE IP地址, 把 RLF数据转发到该地址对应的节点。
或者,当基站收到 UE上报的 RLF数据时,基站检查本地是否保存有基于管理的 MDT 任务, 若有, 则基站查找该任务的配置上下文, 获取配置参数 TCE IP地址, 把 RLF数据 转发到 TCE IP地址对应的节点。
另外, 基站还可以进一步检查 RLF数据涉及的一个或多个相关小区(包括但不限于失 败发生的小区以及尝试重建连接的小区)是否涉及的至少一个小区在 MDT 配置参数中指 定的测量区域内, 若在, 则依据 MDT配置上下文中的 TCE地址转发 RLF数据; 否则, 把 RLF数据转发到本地配置文件中的缺省的 TCE地址对应的节点。
在本发明中,如果用户终端发生 RLF或切换失败时,设备内部保存有 Logged MDT 配 置信息,则用户终端可以从该配置信息中获取 TCE标识,把 TCE标识包含在 RLF数据中。 当基站收到 RLF数据后, 根据其中包含的 TCE标识, 并根据 TCE标识与 TCE地址的映 射关系, 查询到对应的 TCE IP地址, 然后把 RLF数据转发到该地址对应的节点。
下面通过几个典型实施例来详细介绍传输 RLF数据的过程。
参见图 2,本实施例中将 RLF数据传输到 OAM指定的缺省的 TCE地址对应的节点的 方法 ¾ ^程 ¾口下:
OAM为基站配置了缺省的 TCE地址, 用于转发 RLF数据。
步骤 201: 基站接收 UE报告的 RLF数据。
步骤 202: 基站接收 RLF数据后, 在本地查找缺省的 TCE地址。
步骤 203: 基站将接收到的 RLF数据发送到缺省的 TCE地址对应的 TCE节点。
例如, UE A在小区 1发生 RLF或切换失败, 随后尝试在小区 2重建无线连接, 但没 有成功。 UE记录了相关的 RLF数据, 其包括 cell 1 (小区 1 )及周围邻区的无线信号测量 值, 以及小区 2的标识, 还有发生失败时的地理位置等。 之后, UE A在 e B 3 (基站 3 ) 的小区建立了新的无线连接, 把 RLF数据发送给 e B 3 , 本实施例中在 eNB 3 中配置的 缺省的 TCE IP地址是 ipaddx。 eNB 3把 UE A记录的 RLF数据转发到 ipaddx对应的节点。
又如, UE A在小区 1发生 RLF或切换失败, 随后在小区 2重建无线连接, 重建成功。
UE记录了失败时的 RLF数据, 其包括 cell 1及周围邻区的无线信号测量值, 以及小区 2 的标识, 还有发生失败时的地理位置。 根据网络的指示, UE A将 RLF数据发送给小区 2 所在的基站 eNB 2。 在 eNB 2中配置的缺省 TCE IP地址是 ipaddx。 eNB 2把 UE A记录的 RLF数据转发到 ipaddx对应的节点。
参见图 3 , 本实施例中基站利用基于信令的 MDT配置参数中的 TCE地址, 将 RLF数 据传输到 TCE地址对应的节点的方法流程如下:
在基站接收 RLF数据之前, OAM配置了对应 UE的基于信令的 MDT任务, 基站从 MME收到 MDT配置信息,把配置参数 (包含 TCE地址)保存在本地的 MDT配置上下文中。
步骤 301: 基站接收 UE报告的 RLF数据。
步骤 302: 基站接收 RLF数据后, 查找本地是否有为该 UE配置的基于信令的 MDT 任务, 若有, 则继续步骤 303 ; 若没有, 则继续步骤 304。
步骤 303: 基站从该任务对应的 MDT配置上下文查找 TCE地址。
步骤 304: 基站从本地的配置信息中查找缺省的 TCE地址。
步骤 305: 基站将接收到的 RLF数据发送到查找到的 TCE地址对应的 TCE节点。 例如, OAM预先配置了基于 UE B的 IMEI (如称为 IMEI B) 的 MDT任务, MDT配 置信息传送到 MME。 因此在建立网络连接过程中, 服务 MME通过 S1 (—种接口)信令 消息把 MDT配置信息传送到 eNB 3, eNB 3保存这些配置信息到 MDT配置上下文中, 并 通过空口信令把一些必要的 MDT配置参数发送给 UE B。 UE B在小区 1发生 RLF或切换 失败, 随后尝试在小区 2重建无线连接, 但没有成功, UE记录了相关的 RLF数据, 其包 括 cell 1及周围邻区的无线信号测量值, 以及小区 2的标识, 还有发生失败时的地理位置, 及相关的时间戳信息等。 一段时间后, UE B在 eNB 3的小区建立了新的无线连接。 连接 建立成功后, UE B根据基站的指示 (即收到的 MDT配置参数的指示)把 RLF数据发送 给 eNB 3。 eNB 3检查 UE B的 IMEI B对应的 MDT 配置上下文, 其中保存的 TCE地址 是 ipaddy , 则将 RLF数据转发到 ipaddy对应的节点。
又如, OAM预先配置了基于 UE C的 IMSI (如称为 IMSI C) 的 MDT任务, MDT配 置信息传送到 MME。 因此在建立网络连接过程中, 服务 MME通过 S1 (—种接口)信令 消息把 MDT配置信息传送到 eNB 3, eNB 3保存这些配置信息到 MDT配置上下文中, 并 通过空口信令把一些必要的 MDT配置参数发送给 UE C。 UE C在小区 1发生 RLF或切换 失败, 随后尝试在小区 2重建无线连接, 但没有成功, UE C记录了相关的 RLF数据, 其 包括 cell 1及周围邻区的无线信号测量值, 以及小区 2的标识, 还有发生失败时的地理位 置, 及相关的时间戳信息等。 一段时间后, UE C在 eNB 3的小区建立了新的无线连接。 连接建立成功后, UE C根据基站的指示 (即收到的 MDT配置参数的指示)把 RLF数据 发送给 eNB 3。 eNB 3检查 UE C 的 IMSI C对应的 MDT 配置上下文,其中保存的 TCE地 址是 ipaddy , 则将 RLF数据转发到 ipaddy对应的节点。
参见图 4, 本实施例中基站利用基于管理的 MDT配置参数中的 TCE地址, 将 RLF数 据传输到 TCE地址对应的节点的方法流程如下: 在基站接收 RLF数据之前, OAM为基站配置了基于管理的 MDT任务, MDT配置信 息传送到基站, 基站把配置参数 (包含 TCE地址)保存到本地的 MDT配置上下文中。
步骤 401: 基站接收 UE报告的 RLF数据。
步骤 402: 基站检查本地是否保存有基于管理的 MDT任务, 若是, 则继续步骤 403 , 否则继续步骤 404。
步骤 403: 基站从该任务对应的 MDT配置上下文中查找 TCE地址。
步骤 404: 基站查找本地的配置信息中的缺省 TCE地址。
步骤 405: 基站将接收到的 RLF数据发送到查找到的 TCE地址对应的 TCE节点。 例如, OAM通过网络管理接口配置了针对 eNB 3的小区 3和小区 4的 MDT任务。 UE D在小区 1发生 RLF或切换失败, 随后尝试在小区 2重建无线连接, 但没有成功, UE 记录了相关的 RLF数据, 包括 cell 1及周围邻区的无线信号测量值, 以及小区 2的标识, 还有发生失败时的地理位置, 及相关的时间戳信息等。 一段时间后, 1^ 0在6^¾ 3的小 区 3建立了新的无线连接。 在连接建立成功后, UE D根据基站的指示把 RLF数据发送给 eNB 3。 eNB 3检查本地没有 4十对 UE D的 MDT 配置上下文(即没有小区 1和小区 2的 MDT 配置上下文), 但是有基于小区 3和小区 4的 MDT配置上下文, eNB 3从中选择一 个 MDT配置上下文, 其中保存的 TCE地址是 ipaddz, 则把 RLF数据转发到 ipaddz对应 的节点。
参见图 5 , 本实施例中基站进行 MDT配置参数指定的区域检测, 将 RLF数据传输到 TCE地址对应的节点的方法流程如下:
在基站接收 RLF数据之前, OAM配置了基于管理的或基于信令的 MDT任务, 基站 把配置参数 (包含 TCE地址)保存到本地的 MDT配置上下文中。
步骤 501 : 基站接收 UE报告的 RLF数据。
步骤 502: 基站检查 RLF数据涉及的小区中是否有小区在 MDT配置上下文中保存的 配置参数所指定的区域内, 若是, 则继续步骤 503 , 否则继续步骤 504。
步骤 503: 基站查找匹配的 MDT配置上下文中的 TCE地址。 所述匹配的 MDT配置 上下文是指 RLF数据涉及的小区在 MDT配置上下文中的配置参数所指定的区域内。
步骤 504: 基站查找配置信息中缺省的 TCE地址。
步骤 505: 基站将接收到的 RLF数据发送到查找到的 TCE地址对应的 TCE节点。 例如, OAM预先通过网络管理接口配置了针对 eNB 3 的小区 3 和小区 4 的 MDT 任务。 UE E在小区 1发生 RLF或切换失败, 随后尝试在小区 2重建无线连接, 但没有成 功, UE记录了相关的 RLF数据, 其包括 cell 1及周围邻区的无线信号测量值, 以及小区 2 的标识, 还有发生失败时的地理位置, 及相关的时间戳信息。 一段时间后, 1^ £在6^¾ 3 的小区建立了新的无线连接。 连接建立成功后, UE E根据基站的指示把 RLF数据发送给 e B 3。 e B 3检查本地没有针对 UE E的 MDT配置上下文(即没有针对小区 1和小区 2 的 MDT配置上下文), 但有基于小区 3和 4的 MDT上下文, 由于发生失败的是小区 1 , 并且尝试重建无线连接的是小区 2, 都不在 MDT任务所指定的区域内。 因此, eNB 3将 RLF数据转发到本地配置的缺省 TCE IP地址对应的节点。
参见图 6, 本实施例中当 RLF数据包含 TCE标识时, 将 RLF数据传输到 TCE地址对 应的节点的方法流程如下:
基站预先向 UE发送 MDT配置参数, 以配置 MDT任务。
步骤 601: 基站接收 UE报告的 RLF数据, RLF数据包括 TCE标识。
步骤 602: 基站根据 TCE标识与 TCE地址的映射关系, 及根据接收的 RLF数据包括 的 TCE标识, 查找 TCE地址。
步骤 603: 基站将接收到的 RLF数据发送到查找到的 TCE地址对应的 TCE节点。 本实施例中出于安全性方面的考虑, 在空口上发送给 UE的 MDT配置参数中包含的 不是 TCE地址, 而是 TCE标识, 在 UE上报的 MDT测量数据中也包含 TCE标识。 为了 使网络中的每个基站都可以根据 TCE标识查询到真正的 TCE地址,在网络部署阶段, OAM 会为每个基站都配置一个 TCE标识到 TCE地址的映射表。 当网络中任何一个基站接收到 MDT测量数据后, 可以依据其中携带的 TCE标识查询映射表, 获得 TCE的地址, 然后 可以将 MDT测量数据转发到对应这个 TCE地址的网络节点。
例如, UE F在小区 1发生 RLF或切换失败, 随后尝试在小区 2重建无线连接, 但没 有成功, UE记录了相关的 RLF数据, 包括 cell 1及周围邻区的无线信号测量值, 以及小 区 2 的标识, 还有发生失败时的地理位置, 及相关的时间戳信息等。 此时 UE 内保存有 Logged MDT 配置信息, 把其中的 TCE标识也包含在 RLF数据中。 一段时间后, UE F在 eNB 3 的小区建立了新的无线连接。 在连接建立成功后, UE F根据基站的指示把 RLF数 据发送给 eNB 3 , eNB 3 根据 RLF数据中包含的 TCE标识查询本地的 TCE标识 -> TCE IP地址映射表, 获得 TCE地址是 ipaddw, 把 RLF数据转发到 ipaddw对应的节点。
通过以上描述了解了传输 RLF数据的实现过程, 该过程主要由基站实现, 下面对基站 的内部结构和功能进行介绍。
参见图 7, 本实施例中基站包括: 第一接口模块 701、 控制模块 702和第二接口模块
703。
第一接口模块 701与 UE连接, 并与 UE交互各种消息, 尤其是用于接收 UE报告的 无线链路失败 RLF数据。
控制模块 702用于接收 RLF数据后, 查找跟踪收集实体 TCE地址。 具体的, 控制模 块 702通过配置信息查找缺省的 TCE地址; 或者, 通过 MDT配置上下文查找 TCE地址。 MDT配置上下文为基于信令的 MDT配置上下文, 或为基于管理的 MDT配置上下文。 控 制模块 702还用于检查 RLF数据涉及的小区中是否有小区在 MDT配置参数所指定的区域 内; 若有小区在 MDT配置参数所指定的区域内, 则查找跟踪收集实体 TCE地址。 若没有 小区在 MDT配置参数所指定的区域内, 则控制模块 702通过配置信息查找缺省的 TCE地 址。 当基站接收的 RLF数据包括 TCE标识时, 控制模块 702根据 TCE标识与 TCE地址 的映射关系, 及根据第一接口模块 701的 RLF数据包括的 TCE标识, 查找 TCE地址。
第二接口模块 703与网络设备连接, 并与网络设备交互各种消息, 尤其是用于将接收 到的 RLF数据发送到 TCE地址对应的 TCE节点。
本发明实施例中基站接收 RLF数据后, 查找跟踪收集实体 TCE地址, 并将接收到的 RLF数据发送到 TCE地址对应的 TCE节点, 以便运营商获得 RLF数据, 进而对网络进行 优化, 实现了 RLF数据的传输和转存。 本发明实施例中基站既可以通过缺省的 TCE地址 转发 RLF数据, 还可以通过 MDT配置上下文中的 TCE地址转发 RLF数据。 该 MDT配 置上下文既可以是基于管理的 MDT上下文, 也可以是基于信令的 MDT上下文。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程序产 品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实 施例的形式。 而且, 本发明可釆用在一个或多个其中包含有计算机可用程序代码的计算机 可用存储介盾 (包括但不限于磁盘存储器、 CD-ROM、 光学存储器等)上实施的计算机程 序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产品的流程图 和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流 程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个 方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了基本创造性概 念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权利要求意欲解释为包括优选 实施例以及落入本发明范围的所有变更和修改。
显然, 本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实 施例的精神和范围。 这样, 倘若本发明实施例的这些修改和变型属于本发明权利要求及其 等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种传输 RLF数据的方法, 其特征在于, 包括以下步骤:
基站接收用户设备 UE报告的无线链路失败 RLF数据;
基站接收 RLF数据后, 查找跟踪收集实体 TCE地址;
基站将接收到的 RLF数据发送到 TCE地址对应的 TCE节点。
2、 如权利要求 1所述的方法, 其特征在于, 基站查找跟踪收集实体 TCE地址的步骤 包括:
基站通过配置信息查找缺省的 TCE地址; 或者
基站通过 MDT配置上下文查找 TCE地址。
3、如权利要求 2所述的方法,其特征在于,所述 MDT配置上下文为基于信令的 MDT 配置上下文, 或为基于管理的 MDT配置上下文。
4、 如权利要求 1或 3所述的方法, 其特征在于, 还包括:
基站检查 RLF数据涉及的小区中是否有小区在 MDT配置上下文中保存的配置参数所 指定的区域内;
基站查找跟踪收集实体 TCE地址的步骤包括: 在确定有小区在 MDT配置上下文中保 存的配置参数所指定的区域内时,基站通过 MDT配置上下文查找跟踪收集实体 TCE地址; 当确定没有小区在 MDT配置上下文中保存的配置参数所指定的区域内时, 则基站通过配 置信息查找缺省的 TCE地址。
5、 如权利要求 1所述的方法, 其特征在于, 所述 RLF数据包括 TCE标识; 基站查找跟踪收集实体 TCE地址的步骤包括: 基站根据 TCE标识与 TCE地址的映射 关系, 及根据接收的 RLF数据包括的 TCE标识, 查找 TCE地址。
6、 一种基站, 其特征在于, 包括:
第一接口模块, 用于接收 UE报告的无线链路失败 RLF数据;
控制模块, 用于接收 RLF数据后, 查找跟踪收集实体 TCE地址;
第二接口模块, 用于将接收到的 RLF数据发送到 TCE地址对应的 TCE节点。
7、 如权利要求 6所述的基站, 其特征在于, 所述控制模块查找跟踪收集实体 TCE地 址, 具体包括:
通过配置信息查找缺省的 TCE地址; 或者, 通过 MDT配置上下文查找 TCE地址。
8、如权利要求 7所述的基站,其特征在于,所述 MDT配置上下文为基于信令的 MDT 配置上下文, 或为基于管理的 MDT配置上下文。
9、 如权利要求 6或 8所述的基站, 其特征在于, 所述控制模块还用于:
检查 RLF数据涉及的小区中是否有小区在 MDT配置上下文中保存的配置参数所指定 的区域内; 当确定有小区在指定的区域内时, 则通过 MDT配置上下文查找跟踪收集实体
TCE地址; 当确定没有小区在 MDT配置上下文中保存的配置参数所指定的区域内时, 则 通过配置信息查找缺省的 TCE地址。
10、 如权利要求 6所述的基站, 其特征在于, 所述 RLF数据包括 TCE标识; 所述控制模块查找跟踪收集实体 TCE地址, 具体包括: 根据 TCE标识与 TCE地址的 映射关系, 及根据接收的 RLF数据包括的 TCE标识, 查找 TCE地址。
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