WO2011131049A1 - 无线链路失败信息的处理方法及系统 - Google Patents

无线链路失败信息的处理方法及系统 Download PDF

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Publication number
WO2011131049A1
WO2011131049A1 PCT/CN2011/070964 CN2011070964W WO2011131049A1 WO 2011131049 A1 WO2011131049 A1 WO 2011131049A1 CN 2011070964 W CN2011070964 W CN 2011070964W WO 2011131049 A1 WO2011131049 A1 WO 2011131049A1
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WO
WIPO (PCT)
Prior art keywords
information processing
network device
rlf information
processing capability
rlf
Prior art date
Application number
PCT/CN2011/070964
Other languages
English (en)
French (fr)
Inventor
高音
和峰
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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 US13/641,097 priority Critical patent/US20130033991A1/en
Priority to KR1020127030215A priority patent/KR101709824B1/ko
Priority to BR112012026475A priority patent/BR112012026475A2/pt
Priority to JP2013505310A priority patent/JP5584822B2/ja
Priority to EP11771502.9A priority patent/EP2562982A4/en
Publication of WO2011131049A1 publication Critical patent/WO2011131049A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • 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
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points
    • 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
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic

Definitions

  • the present invention relates to the field of communications, and in particular to a method and system for processing radio link failure information.
  • LTE Long-Term Evolution
  • the UE may be connected due to factors such as the movement of the user equipment (User Equipment, UE for short) in the network coverage area.
  • An abnormality occurs, for example, the radio link failure (RRF) may occur in the UE, which affects the normal service of the UE.
  • RRF radio link failure
  • the reason for the occurrence of RLF is mainly the coverage gap in the coverage area and the improper handover in the LTE network.
  • the prior art records the measurement result before the RLF occurs and the measurement result when the re-establishment is initiated by the UE, and when the UE initiates the RRC connection reestablishment or the RRC connection establishment to the network side, the measurement is performed.
  • the result is reported to the network side as the RLF information.
  • the measurement result may include the measured reference signal power of the cell, the reference signal receiving quality, and the location information when the RLF occurs corresponding to the measurement result.
  • the base station or other device on the network side can determine the RLF of the local UE to determine whether the RLF generated by the local UE is caused by the coverage vulnerability, or because the handover parameters are improper, and the devices on the network side can also pass the X2 interface or The S1 interface exchanges RLF information.
  • the device on the network side may not have the capability to process RLF information, or may be in a certain cell managed by the network device (for example, a base station), and the network device may not support the processing of the RLF information of the cell. In this case, if the terminal or other device reports the RLF information to the network device that does not have the capability to process the RLF information, the RLF information is useless, thereby causing waste of resources of the network device and the terminal.
  • a primary object of the present invention is to provide a method and system for processing radio link failure information to solve the above problems.
  • a method for processing radio link failure information including: the network device of the management cell notifying the peer end of the RLF information processing capability of the network device, where the peer end is processed according to the RLF information.
  • the RLF information processing capability is performed, where the RLF information processing capability includes: whether each cell managed by the network device supports RLF reporting information processing.
  • the peer end is a terminal that accesses the network through the network device.
  • the network device notifying the terminal of the RLF information processing capability includes: the network device broadcasting the RLF information processing capability to the terminal .
  • the peer end is a terminal that accesses the network through the network device; the network device notifying the terminal of the RLF information processing capability includes: sending, by the network device, the RLF information to be sent to the terminal The message of ability.
  • the message is an RRC connection setup message, an RRC connection reject message, or an RRC reconfiguration message.
  • the peer device is a peer device that communicates with the network device by using the network device.
  • the network device notifying the peer device of the RLF information processing capability includes: sending, by the network device, the peer device An X2 interface message carrying the RLF information processing capability.
  • the X2 interface message is at least one of the following: an X2 interface setup request message, an X2 interface setup response message, or a base station configuration update message.
  • the peer device is a peer device that communicates with the network device by using an S1 interface; the network device notifying the peer device of the RLF information processing capability includes: the network device to the peer device The device sends an S1 interface message carrying the RLF information processing capability.
  • the network device is a station.
  • a system for processing radio link failure RLF information includes: a network device that manages a cell, and is configured to notify a peer end of RLF information processing capability of the network device, where RLF information processing capability
  • the method includes: determining, by the peer end, whether the RLF information processing capability is supported by each of the cells managed by the network device; and determining, by the peer end, the RLF information processing capability, and performing the RLF information processing according to the RLF information processing capability.
  • the peer end is a terminal that accesses the network by using the network device; the network device notifies the terminal of the RLF information processing capability by one of the following manners: the network device The terminal broadcasts the RLF information processing capability; the network device sends a message carrying the RLF information processing capability to the terminal.
  • the peer device is a peer device that communicates with the network device through an X2 interface or an S1 interface; the network device notifies the peer device of the RLF information processing capability in one of the following manners: The device sends an X2 interface message carrying the RLF information processing capability to the other device; the network device sends an S1 interface message carrying the RLF information processing capability to the other device.
  • the network device is a station.
  • the network device is notified to the peer end of the technical solution of the RLF information processing capability, so that the terminal knows whether the network side has the RLF information processing capability, which not only avoids the unnecessary resource waste of the terminal, but also avoids receiving the RLF information on the network side.
  • the unnecessary processing and forwarding the overhead of the air interface signaling resource is reduced, and the memory and energy consumption of the RLF information processing by the terminal and the network element are reduced.
  • FIG. 1 is a block diagram showing a processing system of RLF information according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for processing RLF information according to an embodiment
  • FIG. 3 is a flowchart according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a base station transmitting RLF processing capability by broadcasting through a signaling message according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a base station 1 passing through an X2 interface according to an embodiment of the present invention.
  • the message notifies the base station 2 of the RLF processing capability.
  • FIG. 6 is a flow chart of the base station 1 notifying the base station 2 RLF processing capability through the S1 interface message according to an embodiment of the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
  • Embodiment 1 In this embodiment, a processing system for radio link failure information is provided.
  • FIG. 1 is a structural block diagram of a processing system for RLF information according to an embodiment of the present invention.
  • the system includes: a network device 10 for managing a cell. , opposite end 20.
  • the network device 10 of the management cell is configured to notify the peer end 20 of the RLF information processing capability of the network device 10, where the RLF information processing capability includes: whether each cell managed by the network device 10 supports RLF reporting information processing;
  • the terminal 20 is configured to receive the RLF information processing capability, and perform RLF information processing according to the RLF information processing capability.
  • a method for processing radio link failure information is also provided.
  • FIG. 2 is a flowchart of a method for processing RLF information according to an embodiment. As shown in FIG. 1 and FIG.
  • the method includes: S202, the network device 10 notifies the peer end 20 of the RLF information processing capability of the network device 10, where the RLF information processing capability includes: whether each cell managed by the network device 10 supports the information processing on the RLF; Step S204, the peer end According to the learned RLF information processing capability, the RLF information processing is performed according to the above RLF information processing capability.
  • the network device 10 may not have the capability to process the RLF information, or the network device 10 may not support the processing of the RLF information of the cell for the cell managed by the network device 10.
  • the existing radio link fails the RLF.
  • the technical solution of the information processing does not consider the ability of the network device 10 to process the RLF information, that is, whether the network device 10 can process the RLF information, the peer 20 records the RLF information when the radio link fails, and sends the RLF information.
  • the peer 20 reports the RLF information to the network device 10 that does not have the capability to process the RLF information, the RLF information is useless, which may result in the peer 20 waiting for the response of the network device 10, affecting The normal operation of the peer 20 is caused, and the resource of the network device 10 and the peer 20 is wasted due to the recording and transmitting operation of the peer 20 and the receiving operation of the network device 10.
  • the foregoing system and method provided in this embodiment are used by the network device 10 to notify the peer 10 of its own RLF information processing capability before the peer 20 sends the RLF information to the network device 10.
  • the peer 20 is aware of the network device 10. After the RLF information processing capability, it is determined whether the RLF information is recorded when the RLF occurs, and whether the RLF information is sent to the network device 10, thereby simplifying the peer 20 and the network device 10 if the network device 10 does not have the RLF information processing capability.
  • the processing flow saves system resources.
  • the RLF information processing capability of the network device 10 may include multiple pieces of information, for example, setting a piece of information for each cell managed by the network device 10, where the information may include a cell identifier, and whether the tag network device 10 can support
  • the RLF information processing of the cell in the implementation process, the foregoing network device 10 may be, but not limited to, a base station of an LTE network.
  • the peer 20 can be, but is not limited to, a terminal that accesses the network through the network device, or a peer device that communicates with the network device 10 through an X2 interface or an S1 interface, such as an eNB. It should be noted that the foregoing system and method are not limited to being applied to an LTE network, and may also be applied to other mobile communication networks.
  • the processing of the RLF information may be performed by a base station or a radio network controller (Radio Network Controller, referred to as RNC) Completion, if, in a particular network, the processing of RLF information is done by the RNC, then the network device 10 mentioned in the above system and method may be an RNC.
  • the network device 10 can notify the peer 20 of the RLF information processing capability of the network device 10 in multiple manners, as follows: 1.
  • the peer 20 is a terminal, which can be, but is not limited to, the following:
  • the network device 10 broadcasts its own RLF information processing capability to the terminal in the idle state or the connected state.
  • the period of the broadcast may be arbitrarily set by the administrator according to the application scenario, or may be randomly broadcasted, and the range of the broadcast is not limited to the network device 10.
  • a specific cell that is managed may be broadcast in multiple cells, or may be broadcast in a cell managed by a neighboring network device, so that the cell of the network device 10 and the terminal in the neighboring cell that may be handed over to the cell of the network device 10 are known.
  • the network device 10 sends a message carrying its own RLF information processing capability to the terminal.
  • the terminal requests the RRC connection establishment and the RRC request in a certain cell managed by the network device 10.
  • the network device 10 When reestablishing or selecting to camp on the cell, the network device 10 notifies the terminal of its own RLF information processing capability through an existing signaling message or a dedicated signaling message.
  • the peer 20 performs the RLF information processing according to the RLF information processing capability, and may include, but is not limited to, determining whether the RSF information is recorded when the RSF occurs in a certain area managed by the network device 10, The network device 10 transmits RLF information.
  • the RLF information processing capability of the network device 10 is notified to the terminal in the foregoing manner, so that the terminal learns the RLF information processing capability of the network device 10. If the RLF occurs afterwards, the terminal determines whether to record the RLF measurement report according to the RLF information processing capability of the network device 10. And sending to the network device 10, the terminal does not need to record and send the RLF information every time the RLF occurs, thereby avoiding unnecessary waste of resources of the terminal.
  • the peer 20 is a peer device of the network device 10. For example, when the peer 20 is also configured,
  • the inter-base station can be implemented by using the S1 interface message, for example, it can be a newly defined S1 interface message or an extended S1 interface message, such as an MME configuration transmission message and a base station configuration transmission message.
  • the peer base station is notified of the RLF information processing capability of the network device 10, so that the peer base station learns the RLF information processing capability of the network device 10. If the RLF occurs afterwards, the peer base station according to the RLF information processing capability of the network device 10, Determining whether to forward the received RLF measurement report related to the network device 10 to the network device 10, the peer base station does not need to forward the RLF information every time, thereby avoiding redundant information load on the interface, and avoiding unnecessary information on the network device Waste of resources.
  • Embodiment 2 In this embodiment, a method and a system provided in Embodiment 1 are described in detail in a specific embodiment, where network device 10 is a base station 1 and peer 20 is a terminal, and FIG. 3 is an embodiment according to the present invention.
  • a flowchart of a base station transmitting RLF processing capability by broadcasting as shown in FIG. 3, the terminal is in an idle state or The connection state is to receive the broadcast of the RLF information processing capability to learn whether the cells of the base station support the RLF information processing.
  • the specific procedure is as follows: Step 1: The RLF information processing capability of the broadcast base station 1 in the cell 1 managed by the base station 1 may be, for example, The system information block (SIB) is broadcasted in the system information block (Step 2).
  • SIB system information block
  • the terminal determines that the cell 1 supports the RLF measurement result processing capability. If the cell 1 supports the RLF information processing, the terminal is in the cell. After the RLF occurs, the measurement record needs to be performed, and step 3 is performed; otherwise, step 4 is performed; step 4 is gathered; the terminal has an RLF in the cell 1, and the terminal is in the RRC reestablishment or establishment process, and the terminal uses dedicated signaling to The base station 1 sends the RLF information, which may include, but is not limited to, the measurement result before the RLF and/or the measurement result after the RLF. Step 4: The terminal displays the RLF in the cell 1, does not record the measurement result, and is in the RRC reestablishment or establishment process.
  • Embodiment 3 In this embodiment, the method and system provided in Embodiment 1 are described in detail in a specific embodiment.
  • the network device 10 is a base station 1 and the opposite end 20 is a terminal.
  • FIG. 4 is an embodiment according to the present invention.
  • the base station informs the terminal of the RLF processing capability through the signaling message.
  • the signaling message in this embodiment is the RRC connection establishment related signaling.
  • the specific process is as follows: Step 1. The terminal enters the connection state in the cell 1 of the base station 1, and the terminal Initiating an RRC connection establishment request (radio Resource Control Connection Request); Step 2. After receiving the RRC setup request message, the base station 1 may establish an RRC connection setup message.
  • Step 3 After learning the RLF information processing capability, the terminal determines that the cell 1 supports the RLF measurement result processing capability. If the cell 1 supports the RLF information processing, the terminal needs to perform the measurement record after the RLF occurs in the cell, and performs step 4; if the cell 1 does not support the RLF information processing, step 4 is performed; step 4 gathers 4 The terminal has an RLF in the cell 1, and the terminal sends the RLF information to the base station 1 through dedicated signaling in the RRC reestablishment or establishment process; Step 5: The terminal displays the RLF in the cell 1, does not record the measurement result, and does not report the RLF information in the RRC reestablishment or establishment process.
  • Embodiment 4 In this embodiment, the method and system provided in Embodiment 1 are described in detail in a specific embodiment.
  • the network device 10 is a base station 1 and the peer 20 is a terminal.
  • the implementation is as shown in FIG. 4, the implementation is as shown in FIG.
  • the signaling message of the example is the RRC re-establishment related signaling, and the specific process is as follows: Step 1.
  • the terminal performs RRC reestablishment in the cell 1 of the base station 1, and the base station 1 can notify the terminal RLF information through the RRC reconfiguration message (Radio Resource Control Connection Reconfiguration).
  • the processing capability is as follows: Step 2: After the RLF information processing capability is learned, the terminal determines that the cell 1 supports the RLF measurement result processing capability.
  • step 3 If the cell 1 supports the RLF information processing, the terminal needs to perform measurement records after the RLF occurs in the cell. And performing step 3; if cell 1 does not support RLF information processing, step 4 is performed; step 4 is 3, the terminal has RLF in cell 1, and the terminal is in the RRC reestablishment or establishment process, and the terminal transmits the base station to the base station through dedicated signaling. 1 Sending RLF information; Step 4: The terminal has an RLF in the cell 1, does not record the measurement result, and is in the RRC reestablishment or establishment process. RLF information is not reported.
  • Embodiment 5 In this embodiment, the method and system provided in Embodiment 1 are described in detail in a specific embodiment.
  • the network device 10 is a base station 1 and the peer 20 is a terminal.
  • the implementation is as shown in FIG. 4, the implementation is as shown in FIG.
  • the signaling message of the example is a newly extended dedicated signaling message, and the specific process is as follows: Step 1.
  • the terminal chooses to camp on the cell 1, and the base station 1 can notify the terminal of the RLF information processing capability by using a new independent dedicated message; 2.
  • the terminal learns the RLF information processing capability, it determines that the cell 1 supports the RLF measurement result processing capability. If the cell 1 supports the RLF information processing, the terminal needs to perform the measurement record after the RLF occurs in the cell, and step 3 is performed. If cell 1 does not support RLF information processing, then step 4 is performed; Step 4: 3.
  • the terminal has RLF in the cell 1, and the terminal sends the RLF information to the base station 1 through the dedicated signaling in the RRC reestablishment or establishment process.
  • Step 4 The terminal displays the RLF in the cell 1, and does not record the measurement result. And the RLF information is not reported in the RRC reestablishment or establishment process.
  • Embodiment 6 In this embodiment, the method and system provided in Embodiment 1 are described in detail with reference to a specific embodiment.
  • the network device 10 is a base station 1 and the opposite end 20 is a base station 2.
  • FIG. 5 is implemented according to the present invention. In the embodiment, the base station 1 is notified of the RLF processing capability of the base station 2 by using the X2 interface message.
  • the cell 1 belongs to the base station 1 and the cell 2 belongs to the base station 2.
  • the cell 1 supports the RLF information processing, and the cell 2 does not support the RLF information processing.
  • the specific process is as follows: Step 1.
  • the base station 1 can notify the base station 2 of the capability of the cell 1 through the X2 interface setup request message.
  • Step 2 The base station 2 can pass the X2 interface.
  • the establishment response message notifies the base station 1 of the capability of the cell 1; optionally, the base station 1 and the base station may also use the other signaling messages on the X2 interface to
  • the RLF measurement result processing capability is mutually notified, for example, a base station configuration update message.
  • Step 3 Since the terminal does not know whether the cell 2 supports the RLF measurement result processing, the terminal records the RLF measurement result that occurs in the cell 2; Step 4, the terminal has a late handover at this time, and the cell 1 is successfully reconstructed, because the cell 1 The RLF measurement result processing capability is supported. Therefore, the cell 1 obtains the measurement result of the terminal according to the RLF information reported by the terminal, and the cell 1 can learn that the cell 2 does not support the RLF information processing through the X2 interface flow message, and then the base station 1 obtains the terminal. The reported RLF information does not send the RLF information to the base station 2, thereby avoiding redundant information load on the interface.
  • Embodiment 7 In this embodiment, the method and system provided in Embodiment 1 are described in detail with reference to a specific embodiment.
  • the network device 10 is a base station 1 and the opposite end 20 is a base station 2.
  • FIG. 6 is implemented according to the present invention.
  • the base station 1 of the example informs the base station 2 of the RLF processing capability through the S1 interface message,
  • the cell 1 belongs to the base station 1 and the cell 2 belongs to the base station 2.
  • the cell 1 supports the RLF information processing, and the cell 2 does not support the RLF information processing.
  • the specific procedure is as follows: Step 1.
  • the base station 1 can notify the base station 2 of the capability of the cell 1 through the S1 interface message.
  • Step 2 The base station 2 can respond to the above by responding to the above
  • the response message of the S1 interface message notifies the base station 1 of the capability of the cell 1; optionally, the base station 1 and the base station 2 can also notify the RLF measurement result processing capability of the cell through other signaling messages on the S1 interface.
  • the MME configures a transport message, a base station configuration update message, or a newly defined S1 interface message.
  • Step 3 Since the terminal does not know whether the cell 2 supports the RLF measurement result processing capability, the terminal records the RLF measurement result that occurs in the cell 2; Step 4, the terminal has a late handover at this time, and the cell 1 is successfully reconstructed due to The cell 1 supports the RLF measurement result processing capability.
  • the cell 1 obtains the measurement result of the terminal according to the RLF information reported by the terminal, and the cell 1 can learn that the cell 2 does not support the RLF information processing through the S1 interface flow message, then the base station 1 is After obtaining the RLF information reported by the terminal, the RLF information is not sent to the base station 2, thereby avoiding redundant information load on the interface. From the above description, it can be seen that the present invention achieves the following technical effects: The terminal knows whether the network side has the RLF information processing capability, which not only avoids unnecessary waste of resources of the terminal, but also avoids unnecessary unnecessary reception of the RLF information by the network side.
  • the processing and forwarding thereby reducing the overhead of air interface signaling resources, and reducing the memory and energy consumption of the RLF information processing by the terminal and the network element.
  • the technical solution provided by the embodiment of the present invention can process the RLF information through software, does not need to change the hardware structure of the network device, is easy to implement, and has industrial applicability.
  • 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. made within the scope of the present invention are intended to be included within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

本发明公开了一种无线链路失败信息的处理方法及系统，在上述方法中，管理小区的网络设备向对端通知网络设备的RLF信息处理能力，用于对端根据所述RLF信息处理能力进行RLF信息处理，其中，RLF信息处理能力包括：针对网络设备管理的每个小区，网络设备是否能够处理该小区的RLF信息。通过本发明提供的技术方案，不仅避免了终端无谓的资源浪费，也避免了网络侧接收到RLF信息后进行无谓的处理和转发，从而减少了空口信令资源的开销，并减少了终端和网元进行RLF信息处理的内存和能耗浪费。

Description

无线链路失败信息的处理方法及系统 技术领域 本发明涉及通信领域， 具体而言， 涉及一种无线链路失败信息的处理方 法及系统。 背景技术 在长期演进网络 ( Long-Term Evolution, 简称为 LTE ) 中， 由于无线传 输环境或者用户设备 ( User Equipment, 简称为 UE )在网络覆盖区域的移动 等因素的影响， 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 ( Radio Link Failure, 简称为 RLF ), 从而影响了 UE的正常业务。 为了避免这种情况， 需要尽快检测导致发生 RLF的原因， 导致发生 RLF的 原因主要是覆盖区域内存在覆盖漏洞与 LTE网络中的不当切换。 为了及时发现覆盖问题或者切换参数不当问题， 现有技术通过 UE记录 发生 RLF之前的测量结果， 以及随后发起重建时的测量结果， 在 UE向网络 侧发起 RRC连接重建或者 RRC连接建立时，将测量结果一并作为 RLF信息 上报给网络侧， 该测量结果可能包括测量到的小区的参考信号功率、 参考信 号接收质量以及与测量结果相对应的发生 RLF时的位置信息等。网络侧的基 站或其他设备可以 居 UE的上 4艮信息来判断本地 UE发生的 RLF到底是因 为覆盖漏洞导致的， 还是因为切换参数不当导致的， 网络侧的设备之间也可 以通过 X2接口或 S 1接口交互 RLF信息。 然而， 在实际应用中， 网络侧的设备可能不具备处理 RLF信息的能力， 或者针对该网络设备 （例如基站） 管理的某一个小区， 该网络设备可能不支 持该小区的 RLF信息的处理， 在这种情况下， 如果终端或其他设备向不具备 处理 RLF信息能力的网络设备上报 RLF信息， 则该 RLF信息是无用的， 从 而造成了网络设备和终端的资源浪费。 发明内容 本发明的主要目的在于提供一种无线链路失败信息的处理方法及系统， 以解决上述问题。 才艮据本发明的一个方面， 提供了一种无线链路失败信息的处理方法， 包 括： 管理小区的网络设备向对端通知网络设备的 RLF信息处理能力， 用于对 端根据上述 RLF信息处理能力进行 RLF信息处理， 其中， 所述 RLF信息处 理能力包括： 针对所述网络设备管理的每个小区是否支持 RLF上报信息处 理。 其中， 所述对端为通过所述网络设备接入网络的终端； 所述网络设备向 所述终端通知所述 RLF信息处理能力包括：所述网络设备向所述终端广播所 述 RLF信息处理能力。 其中， 所述对端为通过所述网络设备接入网络的终端； 所述网络设备向 所述终端通知所述 RLF信息处理能力包括：所述网络设备向所述终端发送携 带所述 RLF信息处理能力的消息。 其中， 所述消息是 RRC连接建立消息、 RRC连接拒绝消息或 RRC重配 消息。 其中， 所述对端为通过 X2与所述网络设备通信的对等设备； 所述网络 设备向所述对等设备通知所述 RLF信息处理能力包括：所述网络设备向所述 对等设备发送携带所述 RLF信息处理能力的 X2接口消息。 其中， 所述 X2接口消息是以下至少之一： X2接口建立请求消息、 X2 接口建立响应消息或基站配置更新消息。 其中， 所述对端为通过 S 1接口与所述网络设备通信的对等设备； 所述 网络设备向所述对等设备通知所述 RLF信息处理能力包括：所述网络设备向 所述对等设备发送携带所述 RLF信息处理能力的 S 1接口消息。 其中， 所述网络设备^^站。 根据本发明的另一方面， 提供了一种无线链路失败 RLF信息的处理系 统， 包括： 管理小区的网络设备， 设置为向对端通知网络设备的 RLF信息处 理能力， 其中， RLF信息处理能力包括： 针对所述网络设备管理的每个小区 是否支持 RLF上报信息处理； 对端， 设置为接收 RLF信息处理能力， 并根 据上述 RLF信息处理能力进行 RLF信息处理。 其中， 所述对端为通过所述网络设备接入网络的终端； 所述网络设备通 过以下方式之一向所述终端通知所述 RLF信息处理能力：所述网络设备向所 述终端广播所述 RLF信息处理能力；所述网络设备向所述终端发送携带所述 RLF信息处理能力的消息。 其中，所述对端为通过 X2接口或 S 1接口与所述网络设备通信的对等设 备；所述网络设备通过以下方式之一向所述对等设备通知所述 RLF信息处理 能力： 所述网络设备向所述其他设备发送携带所述 RLF信息处理能力的 X2 接口消息；所述网络设备向所述其他设备发送携带所述 RLF信息处理能力的 S 1接口消息。 其中， 所述网络设备^^站。 通过本发明， 釆用网络设备向对端通知 RLF信息处理能力的技术方案， 使得终端获知网络侧是否具备 RLF信息处理能力，不仅避免了终端无谓的资 源浪费， 也避免了网络侧接收到 RLF信息后进行无谓的处理和转发， 从而减 少了空口信令资源的开销，并减少了终端和网元进行 RLF信息处理的内存和 能耗浪费。 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是才艮据本发明实施例的 RLF信息的处理系统的结构框图； 图 2是才艮据实施例的 RLF信息的处理方法的流程图； 图 3是根据本发明实施例的基站通过广播发送 RLF处理能力的流程图； 图 4是根据本发明实施例的基站通过信令消息通知终端 RLF处理能力的 流程图； 图 5是根据本发明实施例的基站 1通过 X2接口消息通知基站 2 RLF处 理能力的流程图； 图 6是根据本发明实施例的基站 1通过 S 1接口消息通知基站 2 RLF处 理能力的流程图。 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。 实施例一 在本实施例中， 提供了一种无线链路失败信息的处理系统， 图 1是根据 本发明实施例的 RLF信息的处理系统的结构框图， 该系统包括： 管理小区的 网络设备 10 , 对端 20。 其中， 管理小区的网络设备 10 , 设置为向对端 20通 知网络设备 10的 RLF信息处理能力， 其中， RLF信息处理能力包括： 针对 网络设备 10管理的每个小区是否支持 RLF上报信息处理； 对端 20 , 设置为 接收上述 RLF信息处理能力， 根据上述 RLF信息处理能力进行 RLF信息处 理。 在本实施例中， 还提供了一种无线链路失败信息的处理方法， 图 2是根 据实施例的 RLF信息的处理方法的流程图， 结合图 1和图 2所示， 该方法包 括： 步骤 S202 , 网络设备 10向对端 20通知网络设备 10的 RLF信息处理能 力， 其中， RLF信息处理能力包括： 针对网络设备 10管理的每个小区是否 支持 RLF上 4艮信息处理； 步骤 S204, 对端 20根据获知的 RLF信息处理能力， 根据上述 RLF信 息处理能力进行 RLF信息处理。 在实际应用中， 网络设备 10可能不具备处理 RLF信息的能力， 或者针 对网络设备 10管理的某一个小区，网络设备 10可能不支持该小区的 RLF信 息的处理， 现有的无线链路失败 RLF信息处理的技术方案， 没有考虑网络设 备 10处理 RLF信息的能力， 即无论网络设备 10是否能够处理 RLF信息， 对端 20在发生无线链路失败的时候， 均记录 RLF信息， 并将 RLF信息发送 给网络设备 10 , 如果对端 20向不具备处理 RLF信息能力的网络设备 10上 报 RLF信息， 则该 RLF信息是无用的， 可能造成的后果是对端 20—直等待 网络设备 10的回应， 影响了对端 20的正常工作， 并且由于对端 20的记录 和发送操作以及网络设备 10的接收操作， 造成了网络设备 10和对端 20的 资源浪费。 本实施例提供的上述系统和方法， 釆用在对端 20向网络设备 10 , 发送 RLF信息之前， 网络设备 10通知对端 10其自身的 RLF信息处理能力， 对端 20在获知网络设备 10的 RLF信息处理能力之后， 确定发生 RLF时， 是否记 录 RLF信息， 以及是否向网络设备 10发送 RLF信息， 从而在网络设备 10 不具备 RLF信息处理能力的情况下，简化了对端 20和网络设备 10的处理流 程， 节约了系统资源。 需要说明的是， 网络设备 10的 RLF信息处理能力可以包括多条信息， 例如， 针对网络设备 10管理的每个小区设置一条信息， 该信息中可以包括 小区标识， 以及标记网络设备 10是否能够支持该小区的 RLF信息处理， 在实施过程中， 上述网络设备 10可以但不限于是 LTE网络的基站
( Evolved NodeB, 简称为 eNB )。 上述对端 20可以但不限于是通过所述网 络设备接入网络的终端， 或是通过 X2接口或 S 1接口与网络设备 10通信的 对等设备， 例如是 eNB。 需要说明的是， 上述系统和方法不限于应用于 LTE网络， 也可以应用于 其他移动通信网络， 在特定的网络中， RLF信息的处理可以由基站或无线网 络控制器 （ Radio Network Controller, 简称为 RNC ) 完成， 如果， 在特定的 网络中， RLF信息的处理由 RNC完成， 则上述系统和方法中提到的网络设 备 10可以是 RNC。 在实施过程中， 可以网络设备 10釆用多种方式向对端 20通知网络设备 10的 RLF信息处理能力， 具体如下： 一、 对端 20为终端， 则可以但不限于釆用以下方式：
( 1 )网络设备 10向处于空闲态或连接态的终端广播其自身的 RLF信息 处理能力， 广播的周期可以由管理员根据应用场景任意设置，或是随机广播， 广播的范围不限于网络设备 10管理的某个特定小区， 可以在多个小区内广 播， 也可以在相邻网络设备管理的小区内广播， 使网络设备 10的小区和邻 区内可能切换至网络设备 10的小区的终端都获知网络设备 10的信息处理能 力；
( 2 ) 网络设备 10向终端发送携带其自身的 RLF信息处理能力的消息， 例如终端在网络设备 10管理的某个小区下请求 RRC连接建立、 请求 RRC 重建或选择驻留在该小区时， 网络设备 10通过现有的信令消息或专用的信 令消息， 通知终端其自身的 RLF信息处理能力。 在实施过程中， 对端 20根据 RLF信息处理能力进行 RLF信息处理， 可 以但不限于包括：对端 20确定在网络设备 10管理的某一' 区内发生 RLF时， 是否记录 RLF信息， 是否向网络设备 10发送 RLF信息。 通过上述方式向终端通知网络设备 10的 RLF信息处理能力， 使得终端 在获知网络设备 10的 RLF信息处理能力， 如果之后出现 RLF, 终端根据网 络设备 10的 RLF信息处理能力， 确定是否记录 RLF测量报告并发送给网络 设备 10 , 终端不必每次发生 RLF时均记录并发送 RLF信息， 从而避免了终 端无谓的资源浪费。 二、 对端 20为网络设备 10的对等设备， 例如对端 20也^^站时， 则
( 1 )基站间在建立 X2接口时， 通过 X2接口的建立请求 /响应消息交互 各自的 RLF信息处理能力； ( 2 )基站间可以通过 X2接口的其他消息 （例如基站配置更新消息） 交 互各自的 RLF信息处理能力；
( 3 )基站间可以通过 S 1接口消息来实现， 例如可以是新定义的 S 1接 口消息或者是扩展现有的 S 1接口消息，比如 MME配置传输消息和基站配置 传输消息。 通过上述方式向对等基站通知网络设备 10的 RLF信息处理能力， 使得 对等基站在获知网络设备 10的 RLF信息处理能力， 如果之后出现 RLF, 对 等基站根据网络设备 10的 RLF信息处理能力， 确定是否将接收到的与网络 设备 10相关的 RLF测量报告转发给网络设备 10 , 对等基站不必每次都转发 RLF信息， 从而避免了接口上冗余的信息负荷， 也避免了网络设备上无谓的 资源浪费。 实施例二 在本实施例中， 以具体的实施例对实施例一提供的方法和系统进行详细 介绍， 其中， 网络设备 10为基站 1 , 对端 20为终端， 图 3是根据本发明实 施例的基站通过广播发送 RLF处理能力的流程图， 如图 3 , 终端在空闲态或 连接态通过接收携带 RLF信息处理能力的广播，来获知基站的各个小区是否 支持 RLF信息处理， 具体流程如下： 步骤 1 , 基站 1管理的小区 1中广播基站 1的 RLF信息处理能力， 例如 可以在系统消息块 （System Information Block , 简称为 SIB)中广播； 步骤 2、 终端在获知 RLF信息处理能力之后， 判断小区 1支持 RLF测量 结果处理能力， 若小区 1支持 RLF信息处理， 则终端在该小区内出现 RLF 的情况后， 需要进行测量记录， 并执行步骤 3; 否则执行步骤 4; 步 4聚 3、 终端在小区 1 内出现 RLF, 终端在 RRC重建或者建立流程中， 终端通过专用信令向基站 1发送 RLF信息， 可以但不限于包括 RLF之前的 测量结果和 /或 RLF之后的测量结果； 步骤 4, 终端在小区 1 内出现 RLF, 不进行测量结果记录， 并且在 RRC 重建或者建立流程中也不上报 RLF信息。 实施例三 在本实施例中， 以具体的实施例对实施例一提供的方法和系统进行详细 介绍， 其中， 网络设备 10为基站 1 , 对端 20为终端， 图 4是根据本发明实 施例的基站通过信令消息通知终端 RLF处理能力的流程图，本实施例的信令 消息为 RRC建立连接的相关信令， 具体流程如下： 步骤 1、 终端在基站 1的小区 1进入连接态， 终端发起 RRC连接建立请 求 ( Radio Resource Control Connection Request ); 步骤 2、 基站 1收到 RRC建立请求消息后， 可以在 RRC 连接建立消息
( Radio Resource Control Connection Setup )或者 RRC 连接 4巨色消息（ Radio Resource Control Connection Reject ) 中携带 RLF信息处理能力； 步骤 3、 终端在获知 RLF信息处理能力之后， 判断小区 1支持 RLF测量 结果处理能力， 若小区 1支持 RLF信息处理， 则终端在该小区内出现 RLF 的情况后， 需要进行测量记录， 并执行步骤 4; 若小区 1不支持 RLF信息处 理， 则执行步 4聚 5; 步 4聚 4、 终端在小区 1 内出现 RLF, 终端在 RRC重建或者建立流程中， 终端通过专用信令向基站 1发送 RLF信息； 步骤 5、 终端在小区 1 内出现 RLF, 不进行测量结果记录， 并且在 RRC 重建或者建立流程中也不上报 RLF信息。 实施例四 在本实施例中， 以具体的实施例对实施例一提供的方法和系统进行详细 介绍， 其中， 网络设备 10为基站 1 , 对端 20为终端， 如图 4所示， 本实施 例的信令消息为 RRC重建的相关信令， 具体流程如下： 步骤 1、 终端在基站 1的小区 1进行 RRC重建， 基站 1可以通过 RRC 重配消息 ( Radio Resource Control Connection Reconfiguration )通知终端 RLF 信息处理能力； 步骤 2、 终端在获知 RLF信息处理能力之后， 判断小区 1支持 RLF测量 结果处理能力， 若小区 1支持 RLF信息处理， 则终端在该小区内出现 RLF 的情况后， 需要进行测量记录， 并执行步骤 3; 若小区 1不支持 RLF信息处 理， 则执行步 4聚 4; 步 4聚 3、 终端在小区 1 内出现 RLF, 终端在 RRC重建或者建立流程中， 终端通过专用信令向基站 1发送 RLF信息； 步骤 4、 终端在小区 1 内出现 RLF, 不进行测量结果记录， 并且在 RRC 重建或者建立流程中也不上报 RLF信息。 实施例五 在本实施例中， 以具体的实施例对实施例一提供的方法和系统进行详细 介绍， 其中， 网络设备 10为基站 1 , 对端 20为终端， 如图 4所示， 本实施 例的信令消息为一种新扩展的专用信令消息， 具体流程如下： 步骤 1、 终端选择驻留在小区 1 , 基站 1可以通过一条新的独立的专用 消息通知终端 RLF信息处理能力； 步骤 2、 终端在获知 RLF信息处理能力之后， 判断小区 1支持 RLF测量 结果处理能力， 若小区 1支持 RLF信息处理， 则终端在该小区内出现 RLF 的情况后， 需要进行测量记录， 并执行步骤 3; 若小区 1不支持 RLF信息处 理， 则执行步 4聚 4; 步 4聚 3、 终端在小区 1 内出现 RLF, 终端在 RRC重建或者建立流程中， 终端通过专用信令向基站 1发送 RLF信息； 步骤 4、 终端在小区 1 内出现 RLF, 不进行测量结果记录， 并且在 RRC 重建或者建立流程中也不上报 RLF信息。 实施例六 在本实施例中， 以具体的实施例对实施例一提供的方法和系统进行详细 介绍， 其中， 网络设备 10为基站 1 , 对端 20为基站 2, 图 5是根据本发明 实施例的基站 1通过 X2接口消息通知基站 2 的 RLF处理能力的流程图，本 实施例中， 小区 1归属于基站 1 , 小区 2归属于基站 2。 小区 1支持 RLF信 息处理， 小区 2不支持 RLF信息处理， 具体流程如下： 步骤 1、基站 1可以通过 X2接口建立请求消息将小区 1的能力通知给基 站 2; 步骤 2、基站 2可以通过 X2接口建立响应消息将小区 1的能力通知给基 站 1 ; 可选地， 基站 1和基站还可以通过 X2接口上其他的信令消息将小区的
RLF测量结果处理能力进行互相通知， 例如， 基站配置更新消息。 步骤 3、 由于终端不知道小区 2是否支持 RLF测量结果处理， 终端在小 区 2内会记录发生的 RLF测量结果； 步骤 4, 终端此时发生了过晚切换， 并重建到小区 1成功， 由于小区 1 支持 RLF测量结果处理能力， 因此小区 1会根据终端上报的 RLF信息来获 取终端的测量结果， 同时小区 1通过 X2接口流程消息可以获知小区 2不支 持 RLF信息的处理，那么基站 1在获得终端上报的 RLF信息后并不会将 RLF 信息发送给基站 2, 从而避免了接口上冗余的信息负荷。 实施例七 在本实施例中， 以具体的实施例对实施例一提供的方法和系统进行详细 介绍， 其中， 网络设备 10为基站 1 , 对端 20为基站 2, 图 6是根据本发明 实施例的基站 1通过 S 1接口消息通知基站 2 RLF处理能力的流程图， 本实 施例中， 小区 1归属于基站 1 , 小区 2归属于基站 2。 小区 1支持 RLF信息 处理， 小区 2不支持 RLF信息处理， 具体流程如下： 步骤 1、 基站 1可以通过 S 1接口消息将小区 1的能力通知给基站 2; 步骤 2、基站 2可以通过响应于上述 S 1接口消息的响应消息将小区 1的 能力通知给基站 1 ; 可选地， 基站 1和基站 2还可以通过 S 1接口上其他的信令消息将小区 的 RLF测量结果处理能力进行互相通知， 例如， MME配置传输消息、 基站 配置更新消息或新定义的 S 1接口消息。 步骤 3、 由于终端不知道小区 2是否支持 RLF测量结果处理能力， 终端 在小区 2内会记录发生的 RLF测量结果； 步骤 4, 终端此时发生了过晚切换， 并重建到小区 1成功， 由于小区 1 支持 RLF测量结果处理能力， 因此小区 1会根据终端上报的 RLF信息来获 取终端的测量结果， 同时小区 1通过 S 1接口流程消息可以获知小区 2不支 持 RLF信息的处理，那么基站 1在获得终端上报的 RLF信息后并不会将 RLF 信息发送给基站 2, 从而避免了接口上冗余的信息负荷。 从以上的描述中， 可以看出， 本发明实现了如下技术效果： 终端获知网 络侧是否具备 RLF信息处理能力， 不仅避免了终端无谓的资源浪费， 也避免 了网络侧接收到 RLF信息后进行无谓的处理和转发，从而减少了空口信令资 源的开销， 并减少了终端和网元进行 RLF信息处理的内存和能耗浪费。 工业实用 >]■生 本发明实施例提供的技术方案可以通过软件实现对 RLF信息进行处理， 不需要对网络设备的硬件结构进行改变， 易于实现， 具有工业实用性。 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。

Claims

权 利 要 求 书
1. 一种无线链路失败 RLF信息的处理方法， 包括：
管理小区的网络设备向对端通知所述网络设备的 RLF信息处理能 力， 用于所述对端根据所述 RLF信息处理能力进行 RLF信息处理，其 中， 所述 RLF信息处理能力包括： 针对所述网络设备管理的每个小区 是否支持 RLF上报信息处理。
2. 根据权利要求 1所述的方法， 其中，
所述对端为通过所述网络设备接入网络的终端；
所述网络设备向所述终端通知所述 RLF信息处理能力包括： 所述 网络设备向所述终端广播所述 RLF信息处理能力。
3. 根据权利要求 1所述的方法， 其中，
所述对端为通过所述网络设备接入网络的终端；
所述网络设备向所述终端通知所述 RLF信息处理能力包括： 所述 网络设备向所述终端发送携带所述 RLF信息处理能力的消息。
4. 根据权利要求 3所述的方法， 其中， 所述消息是 RRC连接建立消息、 RRC连接拒绝消息或 RRC重配消息。
5. 根据权利要求 1所述的方法， 其中，
所述对端为通过 X2与所述网络设备通信的对等设备； 所述网络设备向所述对等设备通知所述 RLF信息处理能力包括： 所述网络设备向所述对等设备发送携带所述 RLF信息处理能力的 X2 接口消息。
6. 根据权利要求 5所述的方法， 其中， 所述 X2接口消息是以下至少之 一： X2接口建立请求消息、 X2接口建立响应消息或基站配置更新消 息。
7. 根据权利要求 1所述的方法， 其中，
所述对端为通过 S 1接口与所述网络设备通信的对等设备； 所述网络设备向所述对等设备通知所述 RLF信息处理能力包括： 所述网络设备向所述对等设备发送携带所述 RLF信息处理能力的 S 1 接口消息。
8. 根据权利要求 1至 7中任一项所述的方法， 其中， 所述网络设备是基 站。
9. 一种无线链路失败 RLF信息的处理系统， 包括：
管理小区的网络设备， 设置为向对端通知所述网络设备的 RLF信 息处理能力， 其中， 所述 RLF信息处理能力包括： 针对所述网络设备 管理的每个小区是否支持 RLF上报信息处理；
所述对端， 设置为接收所述 RLF信息处理能力， 并才艮据所述 RLF 信息处理能力进行 RLF信息处理。
10. 根据权利要求 9所述的系统， 其中，
所述对端为通过所述网络设备接入网络的终端；
所述网络设备通过以下方式之一向所述终端通知所述 RLF信息处 理能力：
所述网络设备向所述终端广播所述 RLF信息处理能力； 所述网络设备向所述终端发送携带所述 RLF信息处理能力的消 息。
11. 根据权利要求 9所述的系统， 其中，
所述对端为通过 X2接口或 S 1接口与所述网络设备通信的对等设 备；
所述网络设备通过以下方式之一向所述对等设备通知所述 RLF信 息处理能力：
所述网络设备向所述其他设备发送携带所述 RLF信息处理能力的 X2接口消息；
所述网络设备向所述其他设备发送携带所述 RLF信息处理能力的 S 1接口消息。
2. 根据权利要求 9至 11 中任一项所述的系统， 其中， 所述网络设备 站。
PCT/CN2011/070964 2010-04-19 2011-02-12 无线链路失败信息的处理方法及系统 WO2011131049A1 (zh)

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