WO2012146113A1 - Procédé et dispositif pour transmettre des données rlf - Google Patents

Procédé et dispositif pour transmettre des données rlf 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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WIPO (PCT)
Prior art keywords
tce
base station
address
rlf
mdt
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English (en)
Chinese (zh)
Inventor
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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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection 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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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente invention se rapporte à un procédé adapté pour transmettre des données RLF. Le procédé selon l'invention est utilisé pour mettre en œuvre une transmission et un transfert de données RLF. Le procédé selon l'invention comprend les étapes suivantes : une station de base reçoit des données de rupture de la liaison radio (RLF, Radio Link Failure) rapportées par un UE; après avoir reçu les données RLF, la station de base recherche une adresse relative à une entité de collecte de traces (TCE, Trace Collection Entity); et la station de base envoie les données RLF reçues à un nœud TCE correspondant à l'adresse de la TCE. La présente invention se rapporte d'autre part à un dispositif adapté pour mettre en œuvre le procédé.
PCT/CN2012/073143 2011-04-29 2012-03-27 Procédé et dispositif pour transmettre des données rlf Ceased WO2012146113A1 (fr)

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