WO2012048559A1 - 无线链路失败原因的确定方法和装置 - Google Patents

无线链路失败原因的确定方法和装置 Download PDF

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Publication number
WO2012048559A1
WO2012048559A1 PCT/CN2011/072392 CN2011072392W WO2012048559A1 WO 2012048559 A1 WO2012048559 A1 WO 2012048559A1 CN 2011072392 W CN2011072392 W CN 2011072392W WO 2012048559 A1 WO2012048559 A1 WO 2012048559A1
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WO
WIPO (PCT)
Prior art keywords
rlf
base station
cell
information
coverage
Prior art date
Application number
PCT/CN2011/072392
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English (en)
French (fr)
Inventor
高音
韩立锋
Original Assignee
中兴通讯股份有限公司
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Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP11831956.5A priority Critical patent/EP2629565B1/en
Priority to JP2013533073A priority patent/JP5839622B2/ja
Priority to US13/879,541 priority patent/US9832662B2/en
Publication of WO2012048559A1 publication Critical patent/WO2012048559A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to the field of wireless mobile communications, and in particular to a method and apparatus for determining a cause of a failure of a wireless link. Background technique
  • LTE Long Term Evolution
  • E-UTRAN Evolved UTRAN, Evolved UMTS
  • base station eNB Evolved Node B
  • EPC Evolved Packet Core, Evolved Packet Switching Center
  • the EUTRAN includes a set of eNBs connected to the EPC through the S1 interface, and the eNBs can be connected through X2.
  • S l and X2 are also interfaces.
  • One EPC can manage one or more eNBs, and one eNB can also be controlled by multiple EPCs, and one eNB can manage one or more cells.
  • the EPC is composed of an MME (Mobility Management Entity, Mobile Management Unit), an SGW (Serving Gateway), and a PGW (Packet Data Network Gateway).
  • MME Mobility Management Entity
  • SGW Serving Gateway
  • PGW Packet Data Network Gateway
  • the serving cell may switch the UE to a neighboring area with a bad signal, causing the UE to generate RLF in the neighboring area.
  • LTE MRO Mobility Robustness Optimization
  • SON Self-Organizing Network
  • the MRO can discover the current mobility parameters according to the behavior of the RLF generated by the UE. For example, as shown in FIG. 1, the UE in the cell 1 (eNB1) has an RLF, and finally the UE selects the cell 2 (eNB2) to initiate the re-establishment, and the cell 2 (eNB2) transmits the cell to the cell 1 according to the UE's reestablishment message (eNB1).
  • RLF Indication a RLF indication
  • the UE If the UE returns to the IDLE (idle) state when the cell 2 fails to reestablish, the UE selects a new cell 3 for RRC (Radio Resource Connection) establishment by cell selection.
  • RRC Radio Resource Connection
  • the UE may pass through multiple cells, and when the RLF occurs from the UE.
  • the information that the UE can collect plays an important role in whether the network side detection is a coverage problem or a mobility parameter problem. However, as mentioned earlier, the coverage vulnerability may also cause the UE to generate RLF. This may cause the network side to fail to correctly determine the cause of the RLF.
  • the time may be long or short before the UE selects the appropriate cell through the cell selection to perform the RRC establishment success. This is related to the trajectory of the UE and the size of the coverage vulnerability.
  • the information reported by the UE only includes the measurement result of the UE at the time of the RLF, and can be used to determine whether the RLF is caused by the coverage. Therefore, the reason for the RLF cannot be accurately determined. . SUMMARY OF THE INVENTION The present invention has been made in view of the problem that the cause of the RLF cannot be accurately determined in the prior art.
  • the main object of the present invention is to provide a method and apparatus for determining the cause of a failure of a radio link, to solve the above problem. At least one.
  • a method for determining a cause of a failure of a radio link is provided, wherein a UE generates an RLF in a first base station in which the UE resides, and successfully establishes with the second base station.
  • RRC the method includes: the foregoing UE sends the RLF information to the first base station, where the RLF information includes at least one of the following: the ambient signal quality information recorded by the UE when the RRC is successfully established, and the UE is in the RLF when the RLF occurs.
  • the sending, by the UE, the RLF information to the first base station includes: the UE reporting the RLF information to the second base station; and the second base station sending the RLF information to the first base station by using a ⁇ 2 or an S1 interface.
  • the sending, by the UE, the RLF information to the first base station includes: the UE reporting the RLF information to the second base station; and the second base station sending the RLF information to the core network by using a ⁇ 2 or S1 interface; Information is sent to the first base station described above.
  • the reason that the first base station is in the foregoing RLF information to determine the failure of the radio link includes: the first base station determining whether the signal quality of the cell recorded by the RLF occurrence time in the RLF information is less than a preset threshold, where the cell Including at least one of the following: In the serving cell and the neighboring cell; if less than, the first base station determines that the reason for the failure of the radio link is caused by a coverage hole in the cell.
  • the step of determining, by the first base station, whether the signal quality of the serving cell or the neighboring cell recorded by the RLF occurrence time in the RLF information is less than a preset threshold the method further includes: if the cell with the signal quality less than the preset threshold is present, determining the foregoing The reason for the failure of the radio link is caused by the coverage hole in the cell; the signal quality calculated by the cell coverage model, the signal attenuation model, and the location information of the UE when the RLF occurs and the location information of the UE when the RRC is successfully established is smaller than the foregoing The size and location of the coverage vulnerability in the above-mentioned cell with a threshold.
  • the method further includes: adjusting a parameter in the cell in which the coverage vulnerability occurs to affect cell coverage.
  • the foregoing ambient environment signal quality information includes at least one of the following: a service signal quality of the serving cell and the neighboring cell measured by the UE when initiating an RRC request to the second base station.
  • the first base station is located in a different system than the second base station.
  • the device includes: a receiving unit, configured to receive RLF information from the UE, where the RLF information includes at least one of the following: a signal quality of the surrounding environment recorded by the UE when the RRC is successfully established.
  • the determining unit is configured to determine the cause of the failure of the radio link according to the RLF information.
  • the receiving unit includes: a first receiving module, configured to receive the RLF information that is sent by the UE and is forwarded by using the second base station; and a second receiving module, configured to receive the second base station and the core network sent by the UE Forward the above RLF information.
  • the determining unit includes: a determining module, configured to determine whether the signal quality of the cell recorded by the RLF occurrence time in the RLF information is less than a preset threshold, where the cell includes at least one of the following: a serving cell where the UE is located And a determining module, configured to: when the signal quality of the cell recorded at the time of occurrence of the RLF carried in the RLF information is less than the preset threshold, determining that the reason for the failure of the radio link is caused by a coverage vulnerability of the cell.
  • the device further includes: an adjusting unit, configured to: after determining that the cause of the failure of the radio link is caused by a coverage vulnerability of the cell, adjusting a parameter of the cell that has a signal quality less than the preset threshold to affect cell coverage.
  • the use of the surrounding environment signal quality information and the location information to determine the cause of the failure of the radio link enables the network side to obtain more accurate and comprehensive information.
  • the present invention also analyzes the RLF problem caused by the coverage problem, and estimates the size of the coverage vulnerability, provides a detection method for solving the network coverage problem, and helps the network side to perform corresponding optimization measures according to the coverage situation, thereby reducing Network call drop rate, improve network performance.
  • FIG. 1 is a schematic diagram of terminal movement due to coverage problem according to the related art
  • FIG. 2 is a preferred flowchart of a method for determining a cause of failure of a radio link according to an embodiment of the present invention
  • 3 is another preferred flowchart of the method for determining the cause of the failure of the radio link according to the embodiment of the present invention
  • FIG. 4 is still another method for determining the cause of the failure of the radio link according to the embodiment of the present invention.
  • Preferred Flowchart FIG. 5 is a schematic diagram of a preferred structure of a determining device for a wireless link failure cause according to an embodiment of the present invention.
  • FIG. 2 is a preferred flowchart of a method for determining a cause of failure of a radio link according to an embodiment of the present invention.
  • the UE generates a radio link failure RLF in the first base station in which it camps, and successfully establishes RRC with the second base station.
  • the determination method shown in FIG. 2 includes the following steps:
  • the foregoing UE sends the RLF information to the first base station, where the RLF information includes at least one of the following: the ambient environment signal quality information recorded by the UE when the RRC is successfully established, the location information of the UE when the RLF occurs, and the UE. Location information when RRC is successfully established;
  • the first base station uses the RLF information to determine a cause of the radio link failure.
  • the use of ambient signal quality information and location information to determine the cause of the failure of the wireless link enables the network side to obtain more accurate and comprehensive information.
  • the sending, by the UE, the RLF information to the first base station includes: the UE reporting the RLF information to the second base station; and the second base station sending the RLF information by using an X2 or S1 interface.
  • the RLF information is delivered to the source base station through the interface, so that the source base station can determine the coverage vulnerability when the RLF occurred before according to the carried information.
  • the sending, by the UE, the RLF information to the first base station includes: the UE reporting the RLF information to the second base station; and the second base station sending the RLF information by using an X2 or S1 interface.
  • the core network sends the RLF information to the first base station.
  • the invention can be adapted to different scenarios.
  • the reason that the first base station uses the RLF information to determine the radio link failure comprises: determining, by the first base station, that the reason for the radio link failure is caused by the cell according to the RLF information Covering the vulnerability.
  • the first base station determines whether the signal quality of the cell recorded at the time when the RLF is carried in the RLF information is less than a preset threshold, where The cell includes at least one of the following: a serving cell and a neighboring cell where the UE is located; if less, determining that the cause of the radio link failure is caused by a coverage hole in the cell.
  • the reason that the first base station uses the RLF information to determine the radio link failure comprises: determining, by the first base station, a cell that has a coverage vulnerability and a size and location of a coverage vulnerability according to the RLF information.
  • the information carried in the RLF information includes: 1) The UE is occurring in the scenario shown in Figure 1.
  • Ambient signal quality information recorded at the time of the RLF including the signal quality of the current serving cell 1, the signal quality of the cell 2, and the signal quality information of the cell 3; 2) the recorded location information of the UE when the RLF occurs; The surrounding environment signal quality information of the UE when the RRC is established in the cell 3, where the signal quality of the current serving cell 3, the signal quality of the cell 1, and the signal quality information of the cell 3 are included; 4) the recorded UE is successfully established in the RRC.
  • Location information at the time By calculating the distance between two different location information, the distance between two points can be roughly estimated, and according to the signal quality difference of cell 1, cell 2 and cell 3, for example, the signal quality of cell 1 is very small, then cell 1 can be considered. There is a problem with the coverage.
  • the signal attenuation value of each point is measured by the location information of the UE when the RLF occurs and the location information of the UE when the RRC is successfully established, and the coverage model of the cell, if a certain point
  • the signal attenuation value is significantly smaller than the signal attenuation value estimated by the signal attenuation model (for example, less than the signal attenuation value estimated by the signal attenuation model minus the predetermined threshold), and it is determined that there is a problem with the cell coverage at that point. In this way, the size and location of the coverage vulnerability in the cell in which the coverage vulnerability occurs can be roughly estimated.
  • the first base station further includes: adjusting a parameter in the cell that is in the coverage vulnerability to affect the coverage of the cell.
  • the optimization parameter is generated according to the determined cell that has the coverage vulnerability and the size and location of the coverage vulnerability; and the parameter used to affect the cell coverage in the cell that has the coverage vulnerability is adjusted by using the optimization parameter.
  • the network optimization can be achieved by adjusting the parameters of the cell coverage, such as the transmit power and the antenna tilt angle of the cell in which the coverage problem occurs.
  • the ambient environment signal quality information includes at least one of the following: a monthly traffic signal quality of the monthly service cell and the neighboring cell measured by the UE when the RRC request is initiated to the second base station.
  • the location information may be represented by information such as longitude, latitude, altitude, and the like.
  • the first base station and the second base station are located in different systems. That is, if the UE establishes an RRC connection in a different system, such as UTRAN (UMTS (Universal Mobile Telecommunications System) terrestrial radio access network), GSM (Global System For Mobile Communications) system
  • UTRAN Universal Mobile Telecommunications System
  • GSM Global System For Mobile Communications
  • the foregoing information on the UE may also be transmitted between the base stations through an interface, such as an X2 interface or an S1 interface in the LTE system.
  • the RLF related information is used on the terminal, and the RLF related information is obtained by the network side to determine the RLF coverage problem, and the UE estimates the time and environmental signal quality related information. Covering the size and location of the vulnerability provides more basis for detecting and locating the vulnerability.
  • Embodiment 2 Referring to FIG. 3, a flow of reporting RLF related information by a terminal is described. As shown in FIG.
  • the process of reporting the RLF related information by the terminal includes the following steps: S302:
  • the UE resides in the Cell 1 under the jurisdiction of the base station 1, and the radio link fails RLF due to the deterioration of the radio quality or other reasons, and the UE resides.
  • the cell selection process selects the RRC re-establishment process in the cell 2 of the base station 2, the re-establishment fails, and the UE transits to the IDLE state.
  • the UE performs RRC establishment successfully in the Cell3 of the base station 3 through cell selection.
  • the UE records the signal quality measurement result of the serving cell and the surrounding cell measured by the UE before the RLF is generated, and may also record the measurement result of the signal quality of the serving cell and the surrounding cell measured by the UE when the RRC is established.
  • the location information of the RLF moment occurs, and/or the location information of the RRC establishment success time initiated by the UE, and the location information may be represented by information such as longitude, latitude, altitude, and the like.
  • the UE carries the indication information of the radio link failure related measurement information in the RRC establishment complete message (RRCConnectionSetupComplete), and indicates that the base station 3 UE has the saved RLF related measurement information report.
  • the RLF-related measurement information refers to a signal quality measurement result of the serving cell and the surrounding neighboring cell before the RLF occurs, a measurement result of the signal quality of the serving cell and the surrounding cell measured by the UE when the RRC establishment is subsequently initiated, and a location where the UE generates the RLF time.
  • the information the UE initiates one or more pieces of location information of the RRC establishment success time.
  • the base station 3 may send a UE information request message (UEInformationRequest) to the UE to perform measurement information of the relevant RLF.
  • UEInformationRequest UE information request message
  • the UE may report to the base station 3 through the UE information response message (UEInformationResponse) 4 bar radio link failure related measurement information.
  • the base station 3 can transmit the measurement information related to the radio link failure to the base station 1 through the message of X2 or S1.
  • the available messages are RLF INDICATION messages and the like.
  • the base station 1 receives the measurement information related to the failure of the radio link, and combines with other RLF information to determine whether the reason for the RLF is that the black hole is covered or the setting of the handover parameter is unreasonable. For example, the signal quality of the serving cell and the surrounding cell are relatively poor, so There may be an overlay vulnerability.
  • Embodiment 3 Referring to FIG. 4, a flow of RLF reporting information transmission and processing between base stations is described. As shown in FIG. 4, the process of reporting and processing the RLF reporting information between the base stations includes the following steps:
  • step 2 when the base station 3 receives the RLF related measurement information reported by the UE, if there is a direct interface between the base station 3 and the base station 1, then go to step 2); if there is no connection between the base station 3 and the base station 1 If there is a direct interface, go to step 3);
  • the base station 3 transmits the RLF related measurement information to the base station 1 on the X2 interface through the RLF indication (RLF INDICATION) message, and performs local processing by the base station 1, and proceeds to step 5)
  • the base station 3 sends the RLF-related measurement information to the core network through the S1 interface, and includes the routing information of the Cell1 under the base station 1 in the message, such as the global ID information of the TAC and the base station 1;
  • the core network transparently transmits the RLF related measurement information to the base station 1 and performs local processing by the base station 1.
  • the base station 1 receives the measurement information related to the failure of the radio link, and combines with other RLF information to determine whether the reason for the RLF is that the black hole is covered or the setting of the handover parameter is unreasonable. For example, the signal quality of the serving cell and the surrounding cell are relatively poor, then Explain that there may be an overlay vulnerability here.
  • FIG. 5 is a schematic diagram showing a preferred configuration of an apparatus for determining a cause of a failure of a radio link according to an embodiment of the present invention.
  • the apparatus for determining the cause of the failure of the radio link in the preferred embodiment is located in the first base station, where the UE generates a radio link failure RLF in the first base station where the UE resides, and The second base station successfully establishes RRC.
  • the determining apparatus includes: a receiving unit 502, configured to receive RLF information from the UE, where the RLF information includes at least one of the following: a surrounding environment signal quality information recorded by the UE when the RRC establishment is successful, The location information of the UE when the RLF occurs and the location information of the UE when the RRC establishment is successful; the determining unit 504 of the connection receiving unit 502 is configured to determine the cause of the failure of the radio link by using the RLF information.
  • the use of ambient signal quality information and location information to determine the cause of the failure of the wireless link enables the network side to obtain more accurate and comprehensive information.
  • the present invention also analyzes the RLF problem caused by the coverage problem, and estimates the size of the coverage vulnerability, provides a detection method for solving the network coverage problem, and helps the network side to perform corresponding optimization measures according to the coverage situation, thereby reducing Network call drop rate, improve network performance.
  • the receiving unit 502 includes: a first receiving module, configured to receive the RLF information sent by the UE and forwarded by the second base station; and a second receiving module, configured to receive the sending by the UE And the RLF information forwarded by the second base station and the core network.
  • the invention can be adapted to different scenarios.
  • the determining unit 504 includes: a determining module, configured to determine whether the signal quality of the cell recorded by the RLF occurrence time in the RLF information is less than a preset threshold, where the cell includes at least one of the following: The serving cell and the neighboring cell where the UE is located; the determining module of the connection determining module is configured to determine the wireless when the signal quality of the cell recorded by the RLF occurrence time in the RLF information is less than the preset threshold The cause of the link failure is caused by a coverage hole in the cell.
  • the determining unit 504 determines, according to the RLF information, the reason for the failure of the radio link, the determining unit 504 further, according to the RLF information, determining a cell in which the coverage vulnerability occurs and a size and location of the coverage vulnerability. Specifically, if there is the cell whose signal quality is less than the preset threshold, determining that the cause of the radio link failure is caused by a coverage vulnerability of the cell; by using a cell coverage model, a signal attenuation model, and the UE The location information when the RLF occurs and the location information of the UE when the RRC establishment succeeds calculates the size and location of the coverage vulnerability in the cell that is less than the preset threshold.
  • the information carried in the RLF information includes: 1) the surrounding environment signal quality information recorded by the UE at the time of the RLF occurrence in the scenario shown in FIG. 1, wherein the signal quality of the current serving cell 1 and the signal quality of the cell 2 are included. And the signal quality information of the cell 3; 2) the location information of the recorded UE when the RLF occurs; 3) the surrounding environment signal quality information when the UE performs the RRC establishment in the cell 3, where the signal quality and the cell of the current serving cell 3 are included. Signal quality of 1, and signal quality information of cell 3; 4) Recorded location information of the UE when RRC is successfully established.
  • the distance between two points can be roughly estimated, and according to the signal quality difference of cell 1, cell 2 and cell 3, for example, the signal quality of cell 1 is very small, then cell 1 can be considered. There is a problem with the coverage.
  • the signal attenuation value of each point is measured by the location information of the UE when the RLF occurs and the location information of the UE when the RRC is successfully established, and the coverage model of the cell, if a certain point
  • the signal attenuation value is significantly smaller than the signal attenuation value estimated by the signal attenuation model (for example, less than the signal attenuation value estimated by the signal attenuation model minus the predetermined threshold), and it is determined that there is a problem with the cell coverage at that point. In this way, the size and location of the coverage vulnerability in the cell in which the coverage vulnerability occurs can be roughly estimated.
  • the determining apparatus in the preferred embodiment may further include: an adjusting unit 506 of the connection determining unit 504, configured to adjust the occurrence coverage after determining that the cause of the radio link failure is caused by a coverage error of the cell A parameter in the cell of the vulnerability that affects cell coverage.
  • the network is optimized by adjusting the parameters of the cell in which the anomaly occurs.
  • the adjusting unit 506 adjusts parameters for influencing the cell coverage in the cell in which the coverage vulnerability occurs by using the following steps: generating optimization parameters according to the determined cell with the coverage vulnerability and the size and location of the coverage vulnerability. And using the optimization parameter to adjust parameters for influencing cell coverage in a cell in which a coverage vulnerability occurs.
  • the network optimization can be achieved by adjusting the parameters of the cell coverage, such as the transmit power and the antenna tilt angle of the cell in which the coverage problem occurs.
  • the ambient environment signal quality information includes at least one of the following: a monthly traffic signal quality of the monthly service cell and the neighboring cell measured by the UE when the RRC request is initiated to the second base station.
  • the location information may be represented by information such as longitude, latitude, altitude, and the like.
  • the first base station and the second base station are located in different systems.
  • the UE establishes an RRC connection in a different system, such as a UTRAN, GSM system
  • the determination methods mentioned in the various embodiments of the present invention are equally applicable.
  • the foregoing information on the UE may also be transmitted between the base stations through an interface, such as an X2 interface or an S1 interface in the LTE system.
  • an interface such as an X2 interface or an S1 interface in the LTE system.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc.
  • the present invention is applicable to the field of wireless mobile communications. And applied to the determination of the cause of the failure of the wireless link.
  • the main purpose of the present invention is to solve the problem that the network side cannot correctly determine the cause of the RLF. By using the ambient signal quality information and the location information to determine the cause of the failure of the radio link, the network side can obtain more Accurate and comprehensive information.

Abstract

本发明公开了一种无线链路失败原因的确定方法和装置，其中，UE在其所驻留的第一基站中发生RLF，并与第二基站成功建立RRC，上述方法包括：上述UE向上述第一基站发送RLF信息，其中，上述RLF信息包括以下至少之一：UE在RRC建立成功时记录的周围环境信号质量信息、上述UE在发生RLF时的位置信息以及上述UE在RRC建立成功时的位置信息；上述第一基站根据上述RLF信息来确定上述无线链路失败的原因。本发明解决了现有技术中无法对导致RLF的原因进行准确判断的问题，能够使得网络侧获取到更为准确和全面的信息。

Description

无线^ ^失败原因的确定方法和装置 技术领域 本发明涉及无线移动通信领域， 具体而言， 涉及一种无线链路失败原因 的确定方法和装置。 背景技术
LTE ( Long Term Evolution, 长期演进） 网络由 E-UTRAN ( Evolved UTRAN, 演进 UMTS ( Universal Mobile Telecommunications System, 通用移 动通信系统） 陆地无线接入网）基站 eNB ( Evolved Node B, 演进 Node B ) 和 EPC ( Evolved Packet Core, 演进分组交换中心） 组成， 网络扁平化。 其 中 EUTRAN包含和 EPC通过 S 1接口连接的 eNB的集合， eNB之间能通过 X2连接。 S l、 X2是還辑接口。 一个 EPC可以管理一个或多个 eNB, —个 eNB也可以受控于多个 EPC, —个 eNB可以管理一个或多个小区。 EPC是 由 MME ( Mobility Management Entity, 移动管理单元） 和 SGW ( Serving Gateway, 月艮务网关）、 PGW ( Packet Data Network Gateway, 分组数据网络 网关） 组成。 在 LTE中由于无线环境或者用户设备 ( UE, User Equipment )在网络覆 盖区域的移动等因素影响， 可能会引起 UE的连接发生异常， 比如可能导致 UE发生无线链路失败 ( RLF, Radio Link Failure ), 从而影响了 UE的正常业 务。 为了避免这种情况， 需要尽快检测导致 RLF的原因， 比如是否覆盖区域 内存在覆盖漏洞。但是在 LTE网络中不当的切换参数也会导致 UE发生 RLF , 比如可能服务小区会把 UE切换到一个信号不好的邻区导致 UE在邻区发生 了 RLF,为了优化这种情况，在 LTE的自组织网络功能（ SON, Self-Organizing Network ) 中就提出了移动性鲁莽性优化 （ MRO , Mobility Robustness Optimization ), MRO可以才艮据 UE发生 RLF的行为发现当前移动性参数存 在的问题。 比如图 1所示， 处在小区 1 ( eNBl ) 中的 UE发生了 RLF, 最终 UE选了小区 2 ( eNB2 )发起了重建， 则小区 2 ( eNB2 ) 会根据 UE的重建 消息向小区 1 ( eNBl ) 立即发送一个 RLF指示 （ RLF Indication )。 如果 UE 在小区 2重建失败返回 IDLE (空闲）态， 则 UE会通过小区选择选择新的小 区 3进行 RRC ( Radio Resource Connection, 无线资源连接 ) 建立。 而在 UE 处于 IDLE状态的过程中， UE可能经过了多个小区， 从 UE发生 RLF的时 候到进行 RRC建立的过程中， UE能够搜集到的信息对于网络侧检测是覆盖 问题还是移动性参数问题起着重要的作用。 但如前面所述， 由于覆盖漏洞也可能会导致 UE发生 RLF, 这就可能会 导致网络侧无法正确判断导致 RLF的原因。 例如， 当 UE由于 RRC连接重 建失败后， 转入 IDLE态， 到 UE通过小区选择选择到合适的小区进行 RRC 建立成功之间时间可以很长也可能很短。 这和 UE的移动轨迹以及覆盖漏洞 的大小相关， 而目前 UE上报的信息中只包含 UE在发生 RLF时刻的测量结 果可用来判断是否由于覆盖导致的 RLF,这样无法对导致 RLF的原因进行准 确判断。 发明内容 针对现有技术中无法对导致 RLF 的原因进行准确判断的问题而提出本 发明， 为此， 本发明的主要目的在于提供一种无线链路失败原因的确定方法 和装置， 以解决上述问题至少之一。 为了实现上述目的， 才艮据本发明的一个方面， 提供了一种无线链路失败 原因的确定方法， 其中， UE在其所驻留的第一基站中发生 RLF, 并与第二 基站成功建立 RRC,上述方法包括：上述 UE向上述第一基站发送 RLF信息， 其中， 上述 RLF信息包括以下至少之一： UE在 RRC建立成功时 ΐ己录的周围 环境信号质量信息、上述 UE在发生 RLF时的位置信息以及上述 UE在 RRC 建立成功时的位置信息；上述第一基站 居上述 RLF信息来确定上述无线链 路失败的原因。 上述 UE向上述第一基站发送 RLF信息包括：上述 UE将上述 RLF信息 上报给上述第二基站； 上述第二基站通过 Χ2或 S 1接口将上述 RLF信息发 送给上述第一基站。 上述 UE向上述第一基站发送 RLF信息包括：上述 UE将上述 RLF信息 上报给上述第二基站； 上述第二基站通过 Χ2或 S 1接口将上述 RLF信息发 送给核心网； 上述核心网将上述 RLF信息发送给上述第一基站。 上述第一基站 居上述 RLF信息来确定上述无线链路失败的原因包括： 上述第一基站判断上述 RLF信息中携带的 RLF发生时刻所记录的小区的信 号质量是否小于预设阈值， 其中， 上述小区包括以下至少之一： 上述 UE所 在的服务小区以及邻小区； 若小于， 则上述第一基站确定上述无线链路失败 的原因由小区出现覆盖漏洞而导致。 上述第一基站判断上述 RLF信息中携带的 RLF发生时刻记录的服务小 区或邻小区的信号质量是否小于预设阈值的步骤还包括： 若存在信号质量小 于上述预设阈值的上述小区， 则确定上述无线链路失败的原因由该小区出现 覆盖漏洞而导致；通过小区覆盖模型、信号衰减模型以及上述 UE在发生 RLF 时的位置信息以及上述 UE在 RRC建立成功时的位置信息计算信号质量小于 上述预设阈值的上述小区中的覆盖漏洞的大小和位置。 在确定上述无线链路失败的原因由该小区出现覆盖漏洞而导致之后， 上 述方法还包括：调整出现覆盖漏洞的所述小区中的用于影响小区覆盖的参数。 上述周围环境信号质量信息包括以下至少之一： 上述 UE在向上述第二 基站发起 RRC请求时所测量的服务小区和邻小区的服务信号质量。 上述第一基站与上述第二基站位于不同的系统中。 为了实现上述目的， 才艮据本发明的另一方面， 提供了一种无线链路失败 原因的确定装置， 位于第一基站中， 其中， UE 在其所驻留的上述第一基站 中发生 RLF, 并与第二基站成功建立 RRC, 上述装置包括： 接收单元， 设置 为接收来自上述 UE的 RLF信息， 其中， 上述 RLF信息包括以下至少之一： UE在 RRC建立成功时记录的周围环境信号质量信息、 上述 UE在发生 RLF 时的位置信息以及上述 UE在 RRC建立成功时的位置信息； 确定单元， 设置 为才艮据上述 RLF信息来确定上述无线链路失败的原因。 上述接收单元包括： 第一接收模块， 设置为接收上述 UE发送的并经由 上述第二基站转发的上述 RLF信息； 第二接收模块， 设置为接收上述 UE发 送的并经由上述第二基站、 核心网转发的上述 RLF信息。 上述确定单元包括： 判断模块，设置为判断上述 RLF信息中携带的 RLF 发生时刻所记录的小区的信号质量是否小于预设阈值， 其中， 上述小区包括 以下至少之一： 上述 UE所在的服务小区以及邻小区； 确定模块， 设置为在 上述 RLF信息中携带的 RLF发生时刻所记录的小区的信号质量小于上述预 设阈值时， 确定上述无线链路失败的原因由小区出现覆盖漏洞而导致。 上述装置还包括： 调整单元， 设置为在确定出上述无线链路失败的原因 由小区出现覆盖漏洞而导致之后， 调整存在信号质量小于上述预设阈值的上 述小区的用于影响小区覆盖的参数。 通过本发明， 利用周围环境信号质量信息以及位置信息对无线链路失败 的原因进行判断， 能够使得网络侧获取到更为准确和全面的信息。 此外， 本 发明还对由于覆盖问题导致的 RLF问题进行了分析，推测覆盖漏洞的大小情 况， 为解决网络覆盖问题提供了检测方法， 同时有助于网络侧根据覆盖情况 进行相应的优化措施， 减少网络掉话率， 提高网络性能。 本发明的其它特征和优点将在随后的说明书中阐述， 并且， 部分地从说 明书中变得显而易见， 或者通过实施本发明而了解。 本发明的目的和其他优 点可通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结构来实 现和获得。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的 不当限定。 在附图中： 图 1是根据相关技术的由于覆盖问题导致的终端移动的示意图； 图 2是才艮据本发明实施例的无线链路失败原因的确定方法的一种优选的 流程图； 图 3是才艮据本发明实施例的无线链路失败原因的确定方法的另一种优选 的流程图； 图 4是才艮据本发明实施例的无线链路失败原因的确定方法的又一种优选 的流程图； 图 5是根据本发明实施例的无线链路失败原因的确定装置的一种优选的 结构示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在 不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组合。 实施例 1 图 2是才艮据本发明实施例的无线链路失败原因的确定方法的一种优选的 流程图。在该实施例中， UE在其所驻留的第一基站中发生无线链路失败 RLF, 并与第二基站成功建立 RRC。 如图 2所示的确定方法包括如下步 4聚：
S202, 上述 UE向上述第一基站发送 RLF信息， 其中， 上述 RLF信息 包括以下至少之一： UE在 RRC建立成功时记录的周围环境信号质量信息、 上述 UE在发生 RLF时的位置信息以及上述 UE在 RRC建立成功时的位置 信息；
S204, 上述第一基站 居上述 RLF 信息来确定上述无线链路失败的原 因。 通过本优选的实施例， 利用周围环境信号质量信息以及位置信息对无线 链路失败的原因进行判断， 能够使得网络侧获取到更为准确和全面的信息。 优选的， 所述 UE向所述第一基站发送 RLF信息包括： 所述 UE将所述 RLF信息上报给所述第二基站；所述第二基站通过 X2或 S 1接口将所述 RLF 信息发送给所述第一基站。 在本优选的实施例中， 通过接口将 RLF信息传递 给源基站，使得源基站能够根据所携带的信息判断之前发生 RLF时候的覆盖 漏洞情况。 优选的， 所述 UE向所述第一基站发送 RLF信息包括： 所述 UE将所述 RLF信息上报给所述第二基站；所述第二基站通过 X2或 S 1接口将所述 RLF 信息发送给核心网； 所述核心网将所述 RLF信息发送给所述第一基站。 通过 本优选的实施例， 可以使本发明适用于不同的场景。 优选的 ,所述第一基站 居所述 RLF信息来确定所述无线链路失败的原 因包括：所述第一基站才艮据所述 RLF信息确定出所述无线链路失败的原因由 小区出现覆盖漏洞而导致。 具体的， 第一基站（即， 源基站）判断 RLF信息 中携带的 RLF发生时刻记录的小区的信号质量是否小于预设的阈值， 其中， 所述小区包括以下至少之一： 所述 UE所在的服务小区以及邻小区； 若小于， 则确定所述无线链路失败的原因由小区出现覆盖漏洞而导致。 优选的 ,所述第一基站 居所述 RLF信息来确定所述无线链路失败的原 因包括：所述第一基站根据所述 RLF信息确定出出现覆盖漏洞的小区以及覆 盖漏洞的大小和位置。 具体的， 若存在信号质量小于所述预设阈值的所述小 区， 则确定所述无线链路失败的原因由该小区出现覆盖漏洞而导致； 通过小 区覆盖模型、 信号衰减模型以及所述 UE在发生 RLF时的位置信息以及所述 UE在 RRC建立成功时的位置信息计算信号质量小于所述预设阈值的所述小 区中的覆盖漏洞的大小和位置。 例如， RLF信息中携带的信息包括： 1 ) 如图 1所示场景下 UE在发生
RLF时刻记录到的周围环境信号质量信息， 其中， 包括当前服务小区 1的信 号质量、 小区 2的信号质量， 以及小区 3的信号质量信息； 2 )记录的 UE在 发生 RLF时的位置信息； 3 ) UE在小区 3进行 RRC建立时候的周围环境信 号质量信息， 其中， 包括当前服务小区 3的信号质量、 小区 1的信号质量， 以及小区 3的信号质量信息； 4 )记录的 UE在 RRC建立成功时的位置信息。 通过对两个不同位置信息的距离计算可以大致估计出两个点的距离， 同时根 据小区 1、 小区 2和小区 3的信号质量差， 比如小区 1的信号质量均非常小， 那么可以认为小区 1的覆盖有问题。 进一步， 在小区 1的覆盖范围内， 通过 UE在发生 RLF时的位置信息与 UE在 RRC建立成功时的位置信息、以及该 小区的覆盖模型测算出各个点的信号衰减值， 若某个点的信号衰减值明显小 于信号衰减模型估计出的信号衰减值 （例如， 小于信号衰减模型估计出的信 号衰减值减去预定阈值）， 则判断出该点上的小区覆盖存在问题。通过这种方 式， 可以大概估计得到出现覆盖漏洞的小区中的覆盖漏洞的大小和位置。 优选的，所述第一基站根据所述 RLF信息确定出出现覆盖漏洞的小区以 及覆盖漏洞的大小之后， 还包括： 调整出现覆盖漏洞的所述小区中的用于影 响小区覆盖的参数。 具体的， 根据确定出的所述出现覆盖漏洞的小区以及所 述覆盖漏洞的大小和位置生成优化参数； 使用所述优化参数对出现覆盖漏洞 的小区中的用于影响小区覆盖的参数进行调整。 例如， 当源基站判决出出现 覆盖问题的小区后， 可以通过对出现覆盖问题的小区的发射功率、 天线倾角 等影响小区覆盖的参数进行调整来达到网络优化的目的。 优选的， 所述周围环境信号质量信息包括以下至少之一： 所述 UE在向 所述第二基站发起 RRC请求时所测量的月艮务小区和邻小区的月艮务信号质量。 优选的， 上述位置信息可以用经度、 纬度、 海拔等信息来表示。 优选的， 所述第一基站与所述第二基站位于不同的系统中。 也就是说， 如果 UE在异系统中建立 RRC连接， 比如 UTRAN ( UMTS ( Universal Mobile Telecommunications System, 通用移动通信系统） 陆地无线接入网）、 GSM ( Global System For Mobile Communications, 全球移动通信系统 ) 系统， 本 发明各个实施例中提到的确定方法同样适用。 优选的， UE 上 4艮的上述信息也可以通过接口在基站之间进行传递， 比 如 LTE系统中的 X2接口或 S 1接口。 在本发明优选的实施例中， 釆用终端上 4艮 RLF 相关信息， 网络侧获得 RLF相关信息后可用来判决发生 RLF的覆盖问题，并通过 UE测量到的时间、 环境信号质量相关信息来推测覆盖漏洞大小及位置， 为覆盖漏洞的检测和定 位提供了更多的依据。 实施例 2: 结合图 3 , 描述了终端上报 RLF相关信息流程。 如图 3所示， 终端上报 RLF相关信息流程包括以下步骤： S302, UE驻留在基站 1所辖的 Cell 1中， 由于无线质量变差或其它原 因导致发生了无线链路失败 RLF, UE 居小区选择过程选择了在基站 2所 辖的小区 Cell 2进行 RRC重建立过程， 重建失败， UE转入 IDLE态， 在 UE 移动过程中 UE通过小区选择在基站 3的 Cell3进行 RRC建立成功， 在此过 程中， UE除了记录在 RLF发生之前的服务小区和周围邻区的信号质量测量 结果，还可以记录 UE发起 RRC建立时所测量的服务小区和周围小区的信号 质量的测量结果， 还可以包含 UE发生 RLF时刻的位置信息， 和 /或 UE发起 RRC建立成功时刻的位置信息， 位置信息可以用经度、 纬度、 海拔等信息来 表示。
S304,UE在 RRC建立完成消息（ RRCConnectionSetupComplete )中携带 了无线链路失败相关测量信息的指示信息， 指示基站 3 UE有保存的 RLF相 关的测量信息上报。 RLF相关的测量信息指 RLF发生之前的服务小区和周围 邻区的信号质量测量结果、 UE在随后发起 RRC建立时所测量的服务小区和 周围小区的信号质量的测量结果、 UE发生 RLF时刻的位置信息、 UE发起 RRC建立成功时刻的位置信息的一项或多项。 S306, 基站 3在收到无线链路失败相关测量信息的指示信息后， 可以向 下发 UE信息请求消息 （ UEInformationRequest ), 让 UE上 4艮相关 RLF的测 量信息。
S308, UE可以通过 UE信息响应消息（ UEInformationResponse ) 4巴无线 链路失败相关的测量信息报告给基站 3。 基站 3可以把无线链路失败相关的 测量信息通过 X2或 S 1 的消息发送至基站 1。 优选的， 可用的消息有 RLF INDICATION ( RLF指示） 消息等。 基站 1 收到无线链路失败相关的测量信息， 结合其它 RLF信息， 判断 RLF的原因是覆盖黑洞还是切换参数设置不合理导致的， 例如服务小区和周 围小区的信号质量都比较差， 那么说明这里可能存在覆盖漏洞。 同时才艮据记 录的 RLF发生之前的服务小区和周围邻区的信号质量测量结果、 UE在随后 发起 RRC 建立时所测量的服务小区和周围小区的信号质量的测量结果， 以 及才艮据 UE记录这两个时刻的位置信息， 结合网络管理系统数据库中存储的 网络拓卜信息中在这些位置上小区的分布信息， 可以评估出网络覆盖问题是 由哪些小区的覆盖导致， 以及覆盖漏洞的大小， 从而进行合理的参数优化， 提高系统性能。 实施例 3 : 结合图 4, 描述了基站间 RLF上报信息传递和处理的流程。 如图 4所示， 基站间 RLF上报信息传递和处理的流程包括如下步骤：
1 ) 如实施例 2中的场景， 当基站 3接收到 UE上报的 RLF相关测量信 息， 若基站 3和基站 1之间存在直接接口， 则转步骤 2 ); 若基站 3和基站 1 之间不存在直接接口， 则转步骤 3 );
2 )基站 3通过 RLF指示 （ RLF INDICATION ) 消息在 X2接口将 RLF 相关测量信息发送给基站 1 , 由基站 1进行本地处理， 转步骤 5 )„
3 )基站 3将 RLF相关测量信息通过 S 1接口发送到核心网， 同时在该消 息中包含基站 1下 Celll的路由信息， 比如 TAC、 基站 1的全局 ID信息；
4 )核心网将 RLF相关测量信息透传到基站 1 , 由基站 1进行本地处理。
5 )基站 1收到无线链路失败相关的测量信息， 结合其它 RLF信息， 判 断 RLF的原因是覆盖黑洞还是切换参数设置不合理导致的，例如服务小区和 周围小区的信号质量都比较差， 那么说明这里可能存在覆盖漏洞。 同时根据 记录的 RLF发生之前的服务小区和周围邻区的信号质量测量结果、 UE在随 后发起 RRC 建立时所测量的服务小区和周围小区的信号质量的测量结果， 以及根据 UE记录这两个时刻的位置信息， 结合网络管理系统数据库中存储 的网络拓卜信息中在这些位置上小区的分布信息， 可以评估出网络覆盖问题 是由哪些小区的覆盖导致， 以及覆盖漏洞的大小，从而进行合理的参数优化， 提高系统性能。 实施例 4 图 5是根据本发明实施例的无线链路失败原因的确定装置的一种优选的 结构示意图。 如图 5所示， 本优选实施例中的无线链路失败原因的确定装置 位于第一基站中， 其中， UE 在其所驻留的所述第一基站中发生无线链路失 败 RLF, 并与第二基站成功建立 RRC。 具体的， 该确定装置包括： 接收单元 502 , 设置为接收来自所述 UE的 RLF信息， 其中， 所述 RLF信息包括以下 至少之一： UE在 RRC建立成功时记录的周围环境信号质量信息、 所述 UE 在发生 RLF时的位置信息以及所述 UE在 RRC建立成功时的位置信息； 连 接接收单元 502的确定单元 504 , 设置为 居所述 RLF信息来确定所述无线 链路失败的原因。 通过本优选的实施例， 利用周围环境信号质量信息以及位置信息对无线 链路失败的原因进行判断， 能够使得网络侧获取到更为准确和全面的信息。 此外， 本发明还对由于覆盖问题导致的 RLF问题进行了分析， 推测覆盖漏洞 的大小情况， 为解决网络覆盖问题提供了检测方法， 同时有助于网络侧根据 覆盖情况进行相应的优化措施， 减少网络掉话率， 提高网络性能。 优选的， 所述接收单元 502 包括： 第一接收模块， 设置为接收所述 UE 发送的并经由所述第二基站转发的所述 RLF信息； 第二接收模块， 设置为接 收所述 UE发送的并经由所述第二基站、 核心网转发的所述 RLF信息。 通过 本优选的实施例， 可以使本发明适用于不同的场景。 优选的， 所述确定单元 504包括： 判断模块， 设置为判断所述 RLF信息 中携带的 RLF发生时刻所记录的小区的信号质量是否小于预设阈值， 其中， 所述小区包括以下至少之一： 所述 UE所在的服务小区以及邻小区； 连接判 断模块的确定模块， 设置为在所述 RLF信息中携带的 RLF发生时刻所记录 的小区的信号质量小于所述预设阈值时， 确定所述无线链路失败的原因由小 区出现覆盖漏洞而导致。 优选的，确定单元 504根据所述 RLF信息来确定所述无线链路失败的原 因的步骤还可以包括：确定单元 504根据所述 RLF信息确定出出现覆盖漏洞 的小区以及覆盖漏洞的大小和位置。 具体的， 若存在信号质量小于所述预设 阈值的所述小区， 则确定所述无线链路失败的原因由该小区出现覆盖漏洞而 导致； 通过小区覆盖模型、 信号衰减模型以及所述 UE在发生 RLF时的位置 信息以及所述 UE在 RRC建立成功时的位置信息计算信号质量小于所述预设 阈值的所述小区中的覆盖漏洞的大小和位置。 例如， RLF信息中携带的信息包括： 1 ) 如图 1所示场景下 UE在发生 RLF时刻记录到的周围环境信号质量信息， 其中， 包括当前服务小区 1的信 号质量、 小区 2的信号质量， 以及小区 3的信号质量信息； 2 )记录的 UE在 发生 RLF时的位置信息； 3 ) UE在小区 3进行 RRC建立时候的周围环境信 号质量信息， 其中， 包括当前服务小区 3的信号质量、 小区 1的信号质量， 以及小区 3的信号质量信息； 4 )记录的 UE在 RRC建立成功时的位置信息。 通过对两个不同位置信息的距离计算可以大致估计出两个点的距离， 同时根 据小区 1、 小区 2和小区 3的信号质量差， 比如小区 1的信号质量均非常小， 那么可以认为小区 1的覆盖有问题。 进一步， 在小区 1的覆盖范围内， 通过 UE在发生 RLF时的位置信息与 UE在 RRC建立成功时的位置信息、以及该 小区的覆盖模型测算出各个点的信号衰减值， 若某个点的信号衰减值明显小 于信号衰减模型估计出的信号衰减值 （例如， 小于信号衰减模型估计出的信 号衰减值减去预定阈值）， 则判断出该点上的小区覆盖存在问题。通过这种方 式， 可以大概估计得到出现覆盖漏洞的小区中的覆盖漏洞的大小和位置。 优选的， 本优选的实施例中的确定装置还可以包括： 连接确定单元 504 的调整单元 506 , 设置为在确定出所述无线链路失败的原因由小区出现覆盖 漏洞而导致之后， 调整出现覆盖漏洞的所述小区中的用于影响小区覆盖的参 数。 在本优选的实施例中， 通过调整出现异常的小区的参数， 优化了网络。 优选的， 调整单元 506通过以下步骤调整出现覆盖漏洞的所述小区中的 用于影响小区覆盖的参数： 根据确定出的所述出现覆盖漏洞的小区以及所述 覆盖漏洞的大小和位置生成优化参数； 使用所述优化参数对出现覆盖漏洞的 小区中的用于影响小区覆盖的参数进行调整。 例如， 当源基站判决出出现覆 盖问题的小区后， 可以通过对出现覆盖问题的小区的发射功率、 天线倾角等 影响小区覆盖的参数进行调整来达到网络优化的目的。 优选的， 所述周围环境信号质量信息包括以下至少之一： 所述 UE在向 所述第二基站发起 RRC请求时所测量的月艮务小区和邻小区的月艮务信号质量。 优选的， 上述位置信息可以用经度、 纬度、 海拔等信息来表示。 优选的， 所述第一基站与所述第二基站位于不同的系统中。 也就是说， 如果 UE在异系统中建立 RRC连接， 比如 UTRAN、 GSM系统， 本发明各个 实施例中提到的确定方法同样适用。 优选的， UE 上 4艮的上述信息也可以通过接口在基站之间进行传递， 比 如 LTE系统中的 X2接口或 S 1接口。 需要说明的是， 在附图的流程图示出的步骤可以在诸如一组计算机可执 行指令的计算机系统中执行， 并且， 虽然在流程图中示出了逻辑顺序， 但是 在某些情况下， 可以以不同于此处的顺序执行所示出或描述的步骤。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可 以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， 或者分布 在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程 序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 或 者将它们分别制作成各个集成电路模块， 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。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的^"神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。 工业实用<1"生 本发明适用于无线移动通信领域， 并应用于无线链路失败原因的确定。 本发明的主要目的在于解决网络侧无法正确判断导致 RLF的原因的问题，通 过本发明， 利用周围环境信号质量信息以及位置信息对无线链路失败的原因 进行判断， 能够使得网络侧获取到更为准确和全面的信息。

Claims

权 利 要 求 书
1. 一种无线链路失败原因的确定方法， 用户设备 UE在其所驻留的第一 基站中发生无线链路失败 RLF, 并与第二基站成功建立无线资源连接 RRC, 所述方法包括：
所述 UE向所述第一基站发送 RLF信息， 其中， 所述 RLF信息包 括以下至少之一： UE在 RRC建立成功时记录的周围环境信号质量信 息、所述 UE在发生 RLF时的位置信息以及所述 UE在 RRC建立成功 时的位置信息；
所述第一基站 居所述 RLF 信息来确定所述无线链路失败的原 因。
2. 根据权利要求 1所述的方法， 其中所述 UE向所述第一基站发送 RLF 信息包括：
所述 UE将所述 RLF信息上报给所述第二基站；
所述第二基站通过 X2或 S 1接口将所述 RLF信息发送给所述第一 基站。
3. 根据权利要求 1所述的方法， 其中所述 UE向所述第一基站发送 RLF 信息包括：
所述 UE将所述 RLF信息上报给所述第二基站；
所述第二基站通过 X2或 S 1接口将所述 RLF信息发送给核心网； 所述核心网将所述 RLF信息发送给所述第一基站。
4. 根据权利要求 1所述的方法， 其中所述第一基站根据所述 RLF信息来 确定所述无线链路失败的原因包括：
所述第一基站判断所述 RLF信息中携带的 RLF发生时刻所记录的 小区的信号质量是否小于预设阈值， 其中， 所述小区包括以下至少之 一： 所述 UE所在的服务小区以及邻小区；
若小于， 则所述第一基站确定所述无线链路失败的原因由小区出 现覆盖漏洞而导致。
5. 根据权利要求 4所述的方法， 其中所述第一基站判断所述 RLF信息中 携带的 RLF发生时刻记录的服务小区或邻小区的信号质量是否小于预 设阈值的步骤还包括：
若存在信号质量小于所述预设阈值的所述小区， 则确定所述无线 链路失败的原因由该小区出现覆盖漏洞而导致；
通过小区覆盖模型、 信号衰减模型以及所述 UE在发生 RLF时的 位置信息以及所述 UE在 RRC建立成功时的位置信息计算信号质量小 于所述预设阈值的所述小区中的覆盖漏洞的大小和位置。
6. 根据权利要求 5所述的方法， 其中在确定所述无线链路失败的原因由 该小区出现覆盖漏洞而导致之后， 还包括：
调整出现覆盖漏洞的所述小区中的用于影响小区覆盖的参数。
7. 根据权利要求 1所述的方法， 其中所述周围环境信号质量信息包括以 下至少之一： 所述 UE在向所述第二基站发起 RRC请求时所测量的月艮 务小区和邻小区的服务信号质量。
8. 根据权利要求 1所述的方法， 其中所述第一基站与所述第二基站位于 不同的系统中。
9. 一种无线链路失败原因的确定装置， 位于第一基站中， 其中， 用户设 备 UE在其所驻留的所述第一基站中发生无线链路失败 RLF, 并与第 二基站成功建立无线资源连接 RRC, 所述装置包括：
接收单元，设置为接收来自所述 UE的 RLF信息，其中，所述 RLF 信息包括以下至少之一： UE在 RRC建立成功时记录的周围环境信号 质量信息、所述 UE在发生 RLF时的位置信息以及所述 UE在 RRC建 立成功时的位置信息；
确定单元， 设置为 居所述 RLF信息来确定所述无线链路失败的 原因。
10. 根据权利要求 9所述的装置， 其中所述接收单元包括：
第一接收模块， 设置为接收所述 UE发送的并经由所述第二基站 转发的所述 RLF信息； 第二接收模块， 设置为接收所述 UE发送的并经由所述第二基站、 核心网转发的所述 RLF信息。
11. 根据权利要求 9所述的装置， 其中所述确定单元包括：
判断模块，设置为判断所述 RLF信息中携带的 RLF发生时刻所记 录的小区的信号质量是否小于预设阈值， 其中， 所述小区包括以下至 少之一： 所述 UE所在的服务小区以及邻小区；
确定模块，设置为在所述 RLF信息中携带的 RLF发生时刻所记录 的小区的信号质量小于所述预设阈值时， 确定所述无线链路失败的原 因由小区出现覆盖漏洞而导致。
12. 根据权利要求 11所述的装置， 其中还包括：
调整单元， 设置为在确定出所述无线链路失败的原因由小区出现 覆盖漏洞而导致之后， 调整出现覆盖漏洞的所述小区中的用于影响 'J、 区覆盖的参数。
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Families Citing this family (15)

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Publication number Priority date Publication date Assignee Title
US9432856B2 (en) * 2011-04-03 2016-08-30 Lg Electronics Inc. Method for deciding transmission of signal
CN102685672A (zh) * 2012-05-10 2012-09-19 电信科学技术研究院 Rlf上报以及rlf上报结果的获取方法及装置
CN103517408A (zh) * 2012-06-30 2014-01-15 华为技术有限公司 获取终端的位置信息的方法、装置及终端
CN102883345A (zh) * 2012-07-02 2013-01-16 厦门大学 长期演进网络中基于多网切换的覆盖空洞的检测方法
JP6071571B2 (ja) * 2013-01-17 2017-02-01 Kddi株式会社 基地局装置、通信システム及び通信方法
JP2014138302A (ja) * 2013-01-17 2014-07-28 Kddi Corp 端末装置、基地局装置、通信システム及び通信方法
CN105265004A (zh) * 2013-10-31 2016-01-20 华为技术有限公司 无线链路失败报告处理方法及装置、系统
US9918258B2 (en) 2013-11-26 2018-03-13 At&T Intellectual Property I, L.P. Anomaly correlation mechanism for analysis of handovers in a communication network
JP6244927B2 (ja) * 2014-01-15 2017-12-13 富士通株式会社 無線基地局装置、無線システム、及び障害検出方法
CN109246735B (zh) * 2014-01-24 2021-12-14 索尼公司 无线通信系统、无线通信系统中的装置和方法
JP6101221B2 (ja) * 2014-02-03 2017-03-22 日本電信電話株式会社 複数基地局無線通信システム、制御方法
US9825828B2 (en) 2014-08-26 2017-11-21 T-Mobile Usa, Inc. Cross-layer link failure alerts
CN107306407B (zh) * 2016-04-19 2019-11-05 展讯通信（上海）有限公司 一种自组网的增强方法和终端设备
CN107690823B (zh) * 2016-09-26 2021-05-25 深圳市大疆创新科技有限公司 一种通信质量检测方法、装置及设备
US10979917B2 (en) * 2017-09-16 2021-04-13 Qualcomm Incorporated Systems and methods for communication beam loss recovery

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009096883A1 (en) * 2008-01-18 2009-08-06 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for radio link failure recovery in a telecommunication system
CN101808354A (zh) * 2010-03-09 2010-08-18 西安电子科技大学 基于移动终端信息检测切换失败场景的方法
CN101836478A (zh) * 2007-10-26 2010-09-15 华为技术有限公司 移动终端、网络实体及其相关方法
US20100234027A1 (en) * 2009-03-16 2010-09-16 Samsung Electronics Co. Ltd. Method and system for improving call drop caused by radio link failure in mobile communication system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4516707B2 (ja) * 2001-07-10 2010-08-04 株式会社エヌ・ティ・ティ・ドコモ ネットワーク制御装置、移動通信システム及び移動通信ネットワーク制御方法
EP1872610B1 (en) * 2005-04-19 2013-04-03 Qualcomm Incorporated Connection failure reporting in wireless communication systems
US7499718B2 (en) * 2006-08-01 2009-03-03 Cisco Technology, Inc. Enhanced coverage hole detection in wireless networks
BRPI0809739B1 (pt) * 2007-04-23 2020-05-19 Interdigital Tech Corp método implementado em uma unidade de transmissão e recepção sem fio e unidade de transmissão e recepção sem fio
US9491722B2 (en) * 2007-08-10 2016-11-08 Qualcomm Incorporated Adaptation of transmit power based on channel quality
US8565753B2 (en) * 2007-11-09 2013-10-22 Nec Corporation Radio communication system, method and program
US9031571B2 (en) * 2008-04-11 2015-05-12 Alcatel Lucent Methods and apparatus for coverage verification in a wireless sensor network
WO2010051838A1 (en) * 2008-11-05 2010-05-14 Nokia Siemens Networks Oy Method of improving coverage and optimisation in communication networks
US9107133B2 (en) * 2009-01-06 2015-08-11 Qualcomm Incorporated Adaptation of handover parameters
CN101815314A (zh) 2009-02-20 2010-08-25 华为技术有限公司 发现无线网络问题的方法、装置及系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101836478A (zh) * 2007-10-26 2010-09-15 华为技术有限公司 移动终端、网络实体及其相关方法
WO2009096883A1 (en) * 2008-01-18 2009-08-06 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for radio link failure recovery in a telecommunication system
US20100234027A1 (en) * 2009-03-16 2010-09-16 Samsung Electronics Co. Ltd. Method and system for improving call drop caused by radio link failure in mobile communication system
CN101808354A (zh) * 2010-03-09 2010-08-18 西安电子科技大学 基于移动终端信息检测切换失败场景的方法

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