WO2014029080A1 - 一种无线链路监测的方法和装置 - Google Patents

一种无线链路监测的方法和装置 Download PDF

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Publication number
WO2014029080A1
WO2014029080A1 PCT/CN2012/080427 CN2012080427W WO2014029080A1 WO 2014029080 A1 WO2014029080 A1 WO 2014029080A1 CN 2012080427 W CN2012080427 W CN 2012080427W WO 2014029080 A1 WO2014029080 A1 WO 2014029080A1
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WO
WIPO (PCT)
Prior art keywords
crs
csi
user terminal
synchronization indication
rrh
Prior art date
Application number
PCT/CN2012/080427
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English (en)
French (fr)
Inventor
季莉
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP12883165.8A priority Critical patent/EP2890176B1/en
Priority to PCT/CN2012/080427 priority patent/WO2014029080A1/zh
Priority to CN201280020565.5A priority patent/CN103765946B/zh
Publication of WO2014029080A1 publication Critical patent/WO2014029080A1/zh
Priority to US14/618,522 priority patent/US9654996B2/en

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Classifications

    • 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
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for wireless link monitoring. Background technique
  • Multi-point coordinated transmission/reception (English is a coordinated multi-RRH (Chinese is radio remote port, English radio remote head) transmission / reception, referred to as CoMP) has the effect of improving data transmission rate, cell edge throughput and system throughput .
  • the user terminal determines whether to initiate a radio resource control (Radio Resource Control, RRC for short) connection re-establishment according to a cell-specific reference signal (CRS) sent by the cell, but the method is
  • RRC Radio Resource Control
  • CRS cell-specific reference signal
  • the embodiment of the present invention provides a method and a device for monitoring a radio link, which is used to solve the problem that a user terminal may initiate an RRC connection re-establishment according to a CRS sent by a cell in a CoMP architecture, which may cause a misjudgment.
  • An embodiment of the present invention provides a method for monitoring a radio link, where the method includes: a user terminal monitoring a CRS and a channel state indication reference signal (information channel state information-reference signal, CSI-RS for short);
  • the user terminal determines, according to the CRS and the CSI-RS, whether to initiate an RRC connection re-establishment.
  • An embodiment of the present invention provides a device for monitoring a radio link, the device includes: a monitoring unit, configured to monitor a cell-specific reference signal CRS and a channel state indication reference signal CSI-RS;
  • a determining unit configured to determine, according to the CRS and the CSI-RS, whether to initiate a radio resource Control RRC connection re-establishment.
  • the user terminal determines whether to initiate the RRC connection re-establishment according to the CRS and the CSI-RS, can more accurately monitor the radio link, reduce the false positive, and initiate the RRC connection re-establishment in time, thereby Improve the user terminal experience.
  • FIG. 1 is a schematic structural diagram of a C oMP system based on an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for monitoring a wireless link according to a first embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for monitoring a wireless link according to Embodiment 2 of the present invention
  • a schematic diagram of a method for monitoring a wireless link is provided.
  • FIG. 5(1) - FIG. 5(3) is a schematic structural diagram of a device for monitoring wireless link according to Embodiment 4 of the present invention. detailed description
  • FIG. 1 is a structural diagram of a CoMP system based on an embodiment of the present invention.
  • the coverage of the macro cell of the macro base station includes one or more RRHs, and one or more RRHs may be connected to the macro base station through a transmission cable (for example, an optical fiber). These RRHs are configured at the edge of the macro cell to increase data transmission rate, cell edge throughput, and system throughput.
  • the macro base station may select one or more RRHs to serve the user terminal (eg, transmit data for the user terminal).
  • a CoMP set serving a user terminal includes one or more RRHs serving the user terminal.
  • a CoMP set provides services for one user terminal, and different CoMP sets can provide services for different user terminals.
  • a CRS sent by a user terminal through a cell To determine whether to initiate an RRC connection re-establishment.
  • the user terminal only determines whether to initiate RRC connection re-establishment according to the CRS, there may be a misjudgment.
  • the macro cell sends a CRS, and the RRH only sends a channel state indication reference signal (in English, channel state information-reference signal, CSI-RS for short).
  • the terminal when the terminal is at the edge of the macro cell, if the user terminal only performs radio link failure monitoring according to the CRS sent by the macro cell, it may be determined that the radio link fails, and the user terminal will The RRC connection re-establishment is initiated. However, there may be an RRH serving the user terminal that is closer to the user terminal. The signal quality of the CSI-RS sent by the RRH is better, and the user terminal does not actually need to initiate the RRC connection. set up.
  • both the macro cell and the RRH send CRS, and the RRH also sends CSI-RS.
  • the RRH sends the same CRS on the same physical resource as the macro cell.
  • the location of the CSI-RS sent by the RRH and the location of the CRS are staggered.
  • the signal quality of the CRS transmitted by the macro cell transmitting the CRS and the RRH is not good, and the signal quality of the CSI-RS received by the terminal is not it is good.
  • Embodiment 1 of the present invention provides a method for wireless link monitoring. As shown in FIG. 2, the method includes the following contents.
  • the user terminal monitors CRS and CSI-RS.
  • the user terminal determines, according to the CRS and the CSI-RS, whether to initiate an RRC connection re-establishment.
  • S21 may specifically include: S21-1, the user equipment monitors the signal quality of the CRS and the CSI-RS. If the signal quality of the CRS or the CSI-RS meets the synchronization or out-of-synchronization requirements, the physical layer of the user terminal sends an out-of-synchronization to the RRC layer of the user terminal. Indication or synchronization indication.
  • the physical layer of the foregoing user terminal sends an out-of-synchronization indication and a synchronization indication to the user terminal according to the CRS or the CSI-RS.
  • the CRS or the CSI-RS For reference, refer to 3GPP TS 36.133, which is not described herein again.
  • the out-of-synchronization indication further includes an identifier, where the identifier is used to indicate whether the out-of-synchronization indication of the CRS or the out-of-synchronization indication of the CSI-RS.
  • the synchronization indication also includes an identifier, where the identifier is used to indicate whether the synchronization indication of the CRS or the synchronization indication of the CSI-RS.
  • the RRC layer of the user terminal may identify the out-of-synchronization indication or the synchronization indication of the CRS, and the out-of-synchronization indication or the synchronization indication of the CSI-RS by using the foregoing identifier.
  • the RRC layer of the user terminal determines whether a radio link failure has occurred according to the out-of-synchronization indication and the synchronization indication.
  • the physical layer of the user terminal is within the duration of each radio frame (for example, the duration of one radio frame is 10 milliseconds).
  • a reference signal such as CRS or CSI-RS
  • SINR Signal to Interference plus Noise Ratio
  • the physical layer of the user terminal obtains a plurality of the above reference signals (for example, the first 20 reference signals) at a certain time (for example, 200 milliseconds), and obtains an SINR by means of filtering such as mean filtering or median filtering, and determines whether the signal to noise ratio is less than out of synchronization. Threshold (Qout), if yes, the physical layer of the user terminal reports an out-of-sync indication to the RRC layer.
  • the physical layer of the user equipment also calculates the SINR of the multiple reference signals (for example, the first 10 reference signals) once every other period (for example, 100 milliseconds), and determines whether the SINR is greater than the synchronization threshold. If yes, the synchronization is reported to the RRC layer.
  • N310 value setting can refer to 3GPP TS 36.133
  • T310 timer
  • the user terminal considers The reference signal generates a radio link failure and initiates an RRC connection re-establishment.
  • the user terminal determines whether to initiate RRC connection re-establishment according to the CRS and the CSI-RS, instead of merely determining whether to initiate the RRC connection re-establishment according to the CRS. Therefore, the user terminal can monitor the wireless link more accurately, and perform RRC connection re-establishment in time to reduce the occurrence of false positives, thereby improving the experience of the user terminal.
  • Embodiment 2 of the present invention provides a method for monitoring a wireless link. As shown in FIG. 3, the method includes the following content.
  • the second embodiment of the present invention is a further extension of the first embodiment of the present invention.
  • the technical features of the method, the concept and the effect described in the first embodiment of the present invention can be applied to the second embodiment of the present invention.
  • the user terminal monitors CRS and CSI-RS.
  • the user terminal determines, according to the monitored CRS and the CSI-RS, whether at least one of the CRS and the CSI-RS has failed to generate a radio link.
  • the CRS in the second embodiment of the present invention may be a CRS sent by a macro cell and a CRS sent by an RRH in a CoMP set.
  • the CSI-RS in the second embodiment of the present invention may be a CSI-RS transmitted by the RRH in the CoMP set.
  • the user terminal determines that at least one of the CRS and the CSI-RS fails to generate a wireless link, the user terminal initiates an RRC connection re-establishment.
  • the method in the second embodiment of the present invention may further include:
  • the user terminal determines that the CRS and the CSI-RS do not generate wireless If the link fails, the user terminal does not initiate RRC connection re-establishment.
  • the method in the second embodiment of the present invention may further include:
  • the user terminal determines, according to the CSI-RS sent by one of the RRHs in the CoMP set, whether the CSI-RS fails to generate a radio link.
  • the user terminal determines that the CSI-RS sent by one of the RRHs in the CoMP set fails to generate a radio link, the user terminal deletes the RRH from the CoMP set.
  • the user terminal determines whether to initiate RRC connection re-establishment according to the CRS and the CSI-RS, instead of merely determining whether to initiate the RRC connection re-establishment according to the CRS. Therefore, the user terminal can monitor the wireless link more accurately, and perform RRC connection re-establishment in time to reduce the occurrence of false positives, thereby improving the experience of the user terminal.
  • the CRS is a signal superposition of the CRS transmitted by the macro cell and the CRS transmitted by the RRH in the CoMP set for the user terminal, and the user terminal If it is only based on the CRS to determine whether a radio link failure has occurred, a false positive may occur.
  • the CRS transmitted by the macro cell and the CRS transmitted by the RRH have poor signal quality (for example, the user terminal is not in the coverage of the macro cell and its RRH)
  • the signal quality of their CRS signal superposition ie, the CRS received by the user terminal
  • the user terminal only judges whether the radio link fails according to the CRS, it will judge that no radio link failure has occurred.
  • the user terminal initiates an RRC connection re-establishment by determining that at least one of the CRS and the CSI-RS fails to generate a radio link, thereby reducing the misjudgment in the above situation as much as possible, thereby improving the user.
  • the experience of the terminal is not necessary to initiate the RRC connection re-establishment, but the signal coverage of the macro cell and the RRH that is actually serving the user terminal is not good, and the user terminal should initiate the RRC connection re-establishment to make the experience of the user terminal not lower. Therefore, in the second embodiment of the present invention, the user terminal initiates an RRC connection re-establishment by determining that at least one of the CRS and the CSI-RS fails to generate a radio link, thereby reducing the misjudgment in the above situation as much as possible, thereby improving the user.
  • the experience of the terminal is not necessary to initiate the RRC connection re-establishment, but the signal coverage of the macro cell and the RRH
  • the user terminal may also send a CSI-RS to the RRH in the RRH of the CoMP set to determine whether a radio link failure occurs, if a certain one
  • the RRH is deleted from the RRH in the CoMP set.
  • the RRH with poor signal quality is deleted, so that the RRH capable of providing the reference signal quality for the user terminal can be added to the CoMP set in time for the above user.
  • Embodiment 3 of the present invention provides a method for monitoring a wireless link. As shown in FIG. 4, the method includes the following content.
  • the third embodiment of the present invention is further refined in the first embodiment of the present invention.
  • the technical features, such as the method, the concept and the effect, which are described in the first embodiment of the present invention, can be applied to the third embodiment of the present invention.
  • the user terminal monitors CRS and CSI-RS.
  • the user terminal determines, according to the monitored CRS and the CSI-RS, whether the CRS and the CSI-RS both generate a radio link failure.
  • the CRS in the third embodiment of the present invention may be a CRS sent by the macro cell.
  • the CSI-RS in the third embodiment of the present invention may be a CSI-RS sent by the RRH in the CoMP set.
  • the user terminal determines that the CRS sent by the macro cell and the CSI-RS sent by the RRH in the CoMP set both fail to generate a radio link, the user terminal initiates an RRC connection re-establishment.
  • the method in the third embodiment of the present invention may further include:
  • the user terminal determines that the radio signal fails to be generated by the macro cell and the reference signal sent by the RRH in the CoMP set, and the radio link fails, the user terminal does not initiate the RRC connection re-establishment.
  • the user terminal determines whether the CRS sent by the macro cell and the CSI-RS sent by the RRH in the CoMP set have failed to generate a radio link, and may refer to the method in the first embodiment of the present invention. , including: S41-1.
  • the physical layer of the user terminal sends an out-of-synchronization indication or a synchronization indication to the user terminal according to the reference signal (the reference signal may be a CRS or a CSI-RS).
  • the user equipment monitors the signal quality of the CRS and the CSI-RS. If the signal quality of the CRS or the CSI-RS meets the synchronization or out-of-synchronization requirements, the physical layer of the user terminal sends an out-of-synchronization to the RRC layer of the user terminal. Indication or synchronization indication.
  • the physical layer of the foregoing user terminal sends an out-of-synchronization indication and a synchronization indication to the user terminal according to the reference signal, and may refer to 3GPP TS 36.133, and details are not described herein again.
  • the RRC layer of the user terminal determines whether the reference signal generates a radio link failure according to the out-of-synchronization indication or the synchronization indication.
  • the method in the third embodiment of the present invention may further include:
  • the user terminal determines, according to the CSI-RS sent by the RRH in the CoMP set, whether the CSI-RS fails to generate a radio link.
  • the user terminal determines that one of the RRHs in the CoMP set sends a CSI-RS to generate a radio link failure, the user terminal deletes the RRH from the CoMP set.
  • the user terminal determines whether to initiate RRC connection re-establishment according to the CRS and the CSI-RS, instead of merely determining whether to initiate the RRC connection re-establishment according to the CRS. Therefore, the user terminal can monitor the wireless link more accurately, and perform RRC connection re-establishment in time to reduce the occurrence of false positives, thereby improving the experience of the user terminal.
  • the macro cell sends the CRS
  • the RRH in the CoMP set only sends the CSI-RS
  • the user terminal is at the edge of the macro cell
  • the user terminal only performs the radio link failure monitoring according to the CRS sent by the macro cell
  • the signal quality of the CRS transmitted by the macro cell is poor, and the user terminal determines that the radio link has failed, and the user terminal sends an RRC connection re-establishment.
  • the signal quality of the CSI-RS transmitted by these RRHs is good, and the user terminal does not actually need to initiate the RRC connection re-establishment, which causes a misjudgment.
  • the technical solution provided by the third embodiment of the present invention is determined by the user terminal.
  • the CRS sent by the macro cell and the CSI-RS sent by the RRH in the CoMP set all generate a radio link failure, and the RRC connection re-establishment is initiated, which can avoid such misjudgment, thereby improving the experience of the user terminal.
  • the user terminal may also send a CSI-RS to the RRH of the RRH in the CoMP set to determine whether a radio link failure has occurred. If a radio link fails to be sent by the CSI-RS, the RRH is removed from the RRH. The RRH in the CoMP set is deleted. When the total number of RRHs in the CoMP set for the user terminal is limited, the RRH with poor signal quality is deleted, so that the RRH capable of providing the reference signal quality for the user terminal can be added to the CoMP set in time for the above. The user terminal is used to improve the user's experience.
  • a device for monitoring a wireless link is provided. As shown in FIG. 5 (1), the device includes:
  • Monitoring unit 50 for monitoring CRS and CSI-RS.
  • the determining unit 51 is configured to determine, according to the monitored CRS and the CSI-RS, whether to initiate an RRC connection re-establishment.
  • the determining unit 51 specifically includes: a physical layer unit 51-1 and an RRC layer unit 51-2;
  • the physical layer unit 51-1 sends an out-of-synchronization indication or a synchronization indication to the RRC layer unit 51-2 of the determining unit 51 according to the CRS and the CSI-RS; the RRC layer unit 51-2 is configured to perform the out-of-synchronization indication or synchronization according to the foregoing Instructing to determine whether a radio link failure has occurred; if so, the RRC layer unit 51-2 determines that an RRC connection re-establishment needs to be initiated; if not, the RRC layer unit 51-2 determines that it is not necessary to initiate an RRC connection re-establishment.
  • the physical layer unit 51-1 includes an identifier in the out-of-synchronization indication or the synchronization indication sent to the RRC layer unit 51-2 of the determining unit 51 according to the CRS and the CSI-RS, and the identifier is used for the RRC layer unit 51-2 to identify Out-of-synchronization indication or synchronization indication of the out-of-step CRS, and loss of the CSI-RS Step indication or synchronization indication.
  • the monitoring unit 50 is specifically configured to monitor the CRS sent by the macro cell and the CRS sent by the RRH in the CoMP set, and the CSI-RS sent by the RRH in the CoMP set.
  • the determining unit 51 is configured to determine, according to the CRS and the CSI-RS, whether at least one of the CRS and the CSI-RS is a radio link failure; if yes, the determining unit 51 determines The RRC connection re-establishment needs to be initiated; if not, the determining unit 51 determines that the RRC connection re-establishment does not need to be initiated. .
  • the monitoring unit 50 may be specifically configured to monitor the CRS sent by the macro cell and the CSI-RS sent by the RRH in the CoMP set.
  • the macro cell sends the CRS
  • the RRH in the CoMP set only sends the CSI-RS.
  • the determining unit 51 is configured to determine, according to the CRS and the CSI-RS, whether the CRS and the CSI-RS both generate a radio link failure; if yes, the determining unit 51 determines that a need to initiate The RRC connection re-establishment; if not, the determining unit 51 determines that the RRC connection re-establishment does not need to be initiated. .
  • the apparatus further includes: a re-establishment unit 52, configured to initiate an RRC connection re-establishment if the determining unit 51 determines that an RRC connection re-establishment needs to be initiated.
  • a re-establishment unit 52 configured to initiate an RRC connection re-establishment if the determining unit 51 determines that an RRC connection re-establishment needs to be initiated.
  • the determining unit 51 is further configured to determine, by the RRH of the RRH in the CoMP set, that the CSI-RS sent by the RRH generates a radio link failure.
  • the apparatus of the fourth embodiment of the present invention further includes:
  • the deleting unit 53 is configured to delete the RRH from the CoMP set if the CSI-RS transmitted by the RRH of the RRH in the CoMP set is determined by the determining unit 51 to generate a radio link failure.
  • the device for the wireless link monitoring according to the fourth embodiment of the present invention may perform the method according to any one of the first to third embodiments of the present invention. It can be understood by those skilled in the art that the steps in the method embodiment may be There are corresponding units to perform, these units can be integrated together, or they can exist independently, and are not limited here.
  • the division of the device in the embodiment of the present invention It may be divided according to functions (for example, the judging unit 51 is divided into different functional units according to different execution method steps), or may be divided according to a communication protocol (for example, the judging unit 51 is divided into physical layer units 51-1 and RRC). Layer unit 51-2), which is not limited herein.
  • the apparatus provided in Embodiment 4 of the present invention may further include other electronic circuits, interfaces, and electronic devices in order to perform the actions or steps in the method embodiments, and details are not described herein again.
  • the apparatus for detecting a radio link determines, according to the CRS and the CSI-RS, whether to initiate an RRC connection re-establishment, instead of merely determining whether to initiate an RRC connection re-establishment according to the CRS. Therefore, the device can more accurately monitor the wireless link, and perform RRC connection re-establishment in time to reduce the occurrence of false positives, thereby improving the experience of the user terminal.
  • the device for monitoring the radio link may also send a CSI-RS to the RRH of the RRH in the CoMP set to determine whether a radio link failure occurs, and if a radio link occurs in a certain RRH transmitting CSI-RS In case of failure, the RRH is deleted from the RRH in the CoMP set by the deleting unit. In the case that the total number of RRHs in the CoMP set served by the device for wireless link monitoring is limited, the RRH with poor signal quality is deleted, so that the RRH with good reference signal quality can be added in time for the device capable of monitoring the wireless link. Enter the CoMP set for use by the device.
  • the device for monitoring wireless link provided by Embodiment 4 of the present invention may be included in a user terminal.
  • the user terminal of the device provided by the embodiment of the present invention can also solve the above technical problem and generate corresponding technical effects.
  • well-known methods, interfaces, and device signaling techniques have not been described in detail to avoid obscuring the present invention in unnecessary detail.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by a program indicating related hardware, and the program may be stored in a computer readable storage medium, the storage medium , such as: Read-Only Memory (ROM) or random storage Memory (RAM), disk, CD, etc.
  • ROM Read-Only Memory
  • RAM random storage Memory

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Abstract

本发明提供一种无线链路监测的方法和装置。在该方法中，用户终端监测小区特定参考信号（CRS）和信道状态指示参考信号（CSI-RS）（S20），并根据所述CRS和所述CSI-RS判断是否发起无线资源控制（RRC）连接重建立（S21）。本发明实施例提供的装置，包括，监测单元和判断单元。应用本发明实施例提供的技术方案，可以更准确地对无线链路进行监测，并及时进行RRC连接重建立，减少误判的产生，从而提高了用户终端的体检。

Description

一种无线链路监测的方法和装置
技术领域
本发明涉及通信领域， 尤其涉及一种无线链路监测的方法和装置。 背景技术
多点协调发送 /接收（英文为 coordinated multi-RRH (中文为射频远程端 口, 英文为 radio remote head ) transmission /reception, 简称为 CoMP )具有 提高数据传输速率、 小区边缘吞吐率以及系统吞吐率的作用。 通常情况下， 用户终端根据小区发送的小区特定参考信号 （英文为 cell specific reference signal , 简称 CRS ) 判断是否发起无线资源控制 （英文为 Radio Resource Control, 简称 RRC )连接重建立，但这种方法在 CoMP架构下可能导致误判， 从而可能降低用户终端的体验。 发明内容
本发明实施例提供一种无线链路监测的方法和装置，用于解决在 CoMP 架构下，用户终端根据小区发送的 CRS判断是否发起 RRC连接重建立，可 能产生误判的问题。
本发明实施例一方面提供一种无线链路监测的方法， 该方法包括： 用户终端监测 CRS 和信道状态指示参考信号 （英文为 channel state information-reference signal , 简称 CSI-RS );
所述用户终端根据所述 CRS和所述 CSI-RS, 判断是否发起 RRC连接 重建立。
本发明实施例另一方面提供一种无线链路监测的装置， 该装置包括： 监测单元， 用于监测小区特定参考信号 CRS和信道状态指示参考信号 CSI-RS;
判断单元， 用于根据所述 CRS和所述 CSI-RS, 判断是否发起无线资源 控制 RRC连接重建立。
应用本发明实施例提供的技术方案， 用户终端根据 CRS和 CSI-RS来 判断是否发起 RRC连接重建立可以更准确地对无线链路进行监测， 减少误 判， 并且及时发起 RRC连接重建立， 从而提高了用户终端的体验。 附图说明
图 1为本发明实施例所基于的 C oMP系统架构示意图；
图 2为本发明实施例一提供的一种无线链路监测的方法流程示意图； 图 3为本发明实施例二提供的一种无线链路监测的方法流程示意图； 图 4为本发明实施例三提供的一种无线链路监测的方法流程示意图； 图 5 ( 1 ) -图 5 ( 3 ) 为本发明实施例四提供的一种无线链路监测的装置 结构示意图。 具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进 行清楚、 完整地描述。 显然， 如下描述的具体实施例仅是本发明的一部分 实施例， 对于本领域的技术人员而言， 本发明还可以不拘泥于这些特定的 细节的其它实施例来实施。
图 1为本发明实施例所基于的 CoMP系统架构图。 宏基站的宏小区的 覆盖范围下包含了一个或多个 RRH, —个或多个 RRH可以通过传输线缆 (例如光纤）与宏基站相连。 这些 RRH被配置在宏小区的边缘， 以提高数 据传输率、 小区边缘吞吐率以及系统吞吐量。 宏基站可以选择一个或多个 RRH为用户终端服务（例如为用户终端传输数据）。 在 CoMP 系统架构， 一个为用户终端服务的 CoMP 集包括为该用户终端服务的一个或多个 RRH。 一个 CoMP集为一个用户终端提供服务， 不同的 CoMP集可以分别 为不同的用户终端提供服务。 现有技术中， 用户终端通过小区发送的 CRS 来判断是否发起 RRC连接重建立。 但在 CoMP架构下， 如果用户终端只根 据 CRS判断是否发起 RRC连接重建立， 可能存在误判。 例如， 在 CoMP 架构下， 宏小区发送 CRS, RRH 只发送信道状态指示参考信号 （英文为 channel state information-reference signal , 简称 CSI-RS )。 这种 '|"青况下, 当终 端在宏小区边缘时， 如果用户终端只根据宏小区发送的 CRS进行无线链路 失败的监测， 则可能判断出产生了无线链路失败， 用户终端就会发起 RRC 连接重建立。 但是， 实际可能存在距离用户终端较近的， 为该用户终端服 务的 RRH, 这些 RRH发送的 CSI-RS的信号质量较好， 用户终端实际上并 不需要发起 RRC连接重建立。
再例如， 在 CoMP架构下， 宏小区和 RRH都发送 CRS, 且 RRH还发 送 CSI-RS。 这种情况下， RRH在和宏小区相同的物理资源上发送相同的 CRS, RRH发送的 CSI-RS所在位置和 CRS的位置是错开的。 这种情况下， 假如终端处于宏小区和 RRH的信号覆盖不好的位置， 理论上， 宏小区发送 CRS和 RRH发送的 CRS的信号质量不好，终端接收到的 CSI-RS的信号质 量也不好。 但由于终端接收到的 CRS是宏小区和 RRH发送的 CRS的信号 叠加，可能用户终端接收到 CRS的信号质量满足不需要发起 RRC连接重建 立的条件， 如果用户终端只根据其接收到的 CRS判断是否发生无线链路失 败， 可能就误判为不需要发生 RRC连接重建立。 实际该用户终端接收到的 其他信道（例如,物理下行共享信道） 中传输数据信号质量已经很差， 用户 终端应该发起 RRC连接重建立才能保证用户终端的体验不降低。 本发明的实施例一提供一种无线链路监测的方法， 如图 2所示， 该方 法包括以下内容。
520, 用户终端监测 CRS和 CSI-RS。
521 , 用户终端根据 CRS和 CSI-RS, 判断是否发起 RRC连接重建立。 可选地， S21具体可以包括： S21-1 ,用户终端监测 CRS和 CSI-RS的信号质量，如果 CRS或者 CSI-RS 的信号质量满足同步或者失步要求， 则该用户终端的物理层向所述用户终 端的 RRC层发送失步指示或同步指示。
作为一个示例， 上述用户终端的物理层如何根据 CRS或 CSI-RS向用 户终端发送失步指示和同步指示， 可参考 3GPP TS 36.133 , 这里不再赘述， 也不作限制。
进一步， 该失步指示中还包括标识， 该标识用于指示是 CRS的失步指 示还是 CSI-RS的失步指示。
进一步， 该同步指示中也包括标识， 该标识用于指示是 CRS的同步指 示还是 CSI-RS的同步指示。
进一步，用户终端的 RRC层可以通过上述标识，识别 CRS的失步指示 或同步指示， 以及 CSI-RS的失步指示或同步指示。
S21-2,上述用户终端的 RRC层才艮据所述失步指示和所述同步指示，判 断是否产生了无线链路失败。
作为一个示例，在用户终端没有釆用非连续接收（英文为 Discontinuous Reception, 简称 DRX ) 的场景下， 用户终端的物理层在每个无线帧的时长 内 （例如一个无线帧的时长为 10毫秒）， 计算一次参考信号 （例如 CRS或 CSI-RS )的信噪比， 该信噪比可以是信号与干扰加噪声比（英文为 Signal to Interference plus Noise Ratio, 简称为 SINR )。用户终端物理层每隔一定时间 (例如 200毫秒）获取一次多个上述参考信号（例如前 20个参考信号）经 过均值滤波或者中值滤波等滤波方式获得 SINR, 判断该信噪比是否小于失 步门限 （Qout ), 如果是， 用户终端的物理层向 RRC 层上报失步指示 ( out-of-sync )。 用户终端物理层还计算每隔一段时间 （例如 100毫秒）获 取一次多个参考信号（例如前 10个参考信号）的 SINR, 判断是否该 SINR 是否大于同步门限， 如果是， 则向 RRC层上报同步指示 （in-sync )。 如果 用户终端 RRC层收到连续 N310 次（N310 的取值设置可参考 3GPP TS 36.133 )失步指示，则启动定时器（例如 T310 ) ,在定时器到时前，如果 RRC 层没有收到连续 N311 ( N311的取值设置可参考 3GPP TS 36.133 )个同步指 示， 则用户终端认为该参考信号产生了无线链路失败， 并发起 RRC连接重 建立。
应用本发明实施例提供的技术方案， 用户终端根据 CRS和 CSI-RS来 判断是否发起 RRC连接重建立， 而非仅仅根据 CRS来判断是否发起 RRC 连接重建立。 因此， 用户终端可以更准确地对无线链路进行监测， 并及时 进行 RRC连接重建立， 减少误判的产生， 从而提高了用户终端的体验。 本发明实施例二提供一种无线链路监测的方法， 如图 3 所示， 该方法 包括以下内容。
本发明实施例二是对本发明实施例一的进一步扩展， 对于本发明实施 例一中所述的方法、 概念以及效果等技术特征， 可以适用于本发明实施例 二中。
530, 用户终端监测 CRS和 CSI-RS。
531 , 用户终端根据监测的 CRS和 CSI-RS, 判断 CRS和 CSI-RS至少 之一是否产生了无线链路失败。
其中， 本发明实施例二中的 CRS可以为宏小区发送的 CRS和 CoMP 集中的 RRH发送的 CRS。 本发明实施例二中的 CSI-RS可以为 CoMP集中 的 RRH发送的 CSI-RS。
本发明实施例二中， 判断 CRS和 CSI-RS是否产生了无线链路失败， 可以参见本发明实施一中 S21-2步骤所述的内容。
532, 如果上述用户终端判断出上述 CRS和 CSI-RS至少之一产生了无 线链路失败， 上述用户终端发起 RRC连接重建立。
可选地， 本发明实施例二所述方法， 还可以包括：
533 , 如果上述用户终端判断出上述 CRS和 CSI-RS都没有产生了无线 链路失败， 上述用户终端则不发起 RRC连接重建立。
可选地， 本发明实施例二所述方法， 可以还包括：
534, 上述用户终端根据上述 CoMP集中的某一个 RRH发送的 CSI-RS 判断该 CSI-RS是否产生了无线链路失败。
535, 如果上述用户终端判断出上述 CoMP集中的某一个 RRH发送的 CSI-RS产生了无线链路失败， 该用户终端将这个 RRH从该 CoMP集中删 除。
本发明实施例二中，用户终端根据 CRS和 CSI-RS来判断是否发起 RRC 连接重建立， 而非仅仅根据 CRS来判断是否发起 RRC连接重建立。 因此， 用户终端可以更准确地对无线链路进行监测 ,并及时进行 RRC连接重建立 , 减少误判的产生，从而提高了用户终端的体验。具体地，在宏小区发送 CRS, CoMP集中的 RRH发送 CRS和 CSI-RS的情况下，对于用户终端来说， CRS 是宏小区发送的 CRS和 CoMP集中的 RRH发送的 CRS的信号叠加， 用户 终端如果仅仅根据 CRS来判断是否产生了无线链路失败，可能会产生误判。 例如， 当用户终端处于宏小区和 RRH信号覆盖较差的位置时， 宏小区发送 的 CRS和 RRH发送的 CRS的信号质量都不好（例如用户终端已经不在宏 小区及其 RRH的覆盖范围了 ), 但是它们 CRS的信号叠加 (即用户终端接 收的 CRS )的信号质量却较好， 如果此时用户终端仅仅根据 CRS来判断无 线链路是否失败，则会判断为没有产生无线链路失败，因此不需要发起 RRC 连接重建立， 而实际是为用户终端服务的宏小区和 RRH的信号覆盖已经不 好， 用户终端本应发起 RRC连接重建立才能使得用户终端的体验不降低。 因此， 本发明实施例二中， 用户终端通过判断出 CRS和 CSI-RS至少之一 产生了无线链路失败， 就发起 RRC连接重建立， 可以尽可能减少上述情况 下的误判， 从而提高用户终端的体验。
更进一步， 本发明实施例二中， 用户终端还可以对 CoMP集中的 RRH 中的某一个 RRH发送 CSI-RS判断是否产生了无线链路失败， 如果某一个 RRH发送 CSI-RS发生了无线链路失败， 则将这个 RRH从 CoMP集中的 RRH中删除。 在为上述用户终端服务的 CoMP集中的 RRH总数有限的情 况下， 删除信号质量较差的 RRH, 从而可以将能够为用户终端提供参考信 号质量好的 RRH及时添加进该 CoMP集中， 以供上述用户终端使用， 提高 用户感受度。 本发明实施例三， 提供一种无线链路监测的方法， 如图 4所示， 该方 法包括以下内容。
本发明实施例三是对本发明实施例一的进一步细化， 对于本发明实施 例一所述的方法、 概念以及效果等技术特征， 可以适用于本发明实施例三 中。
540, 用户终端监测 CRS和 CSI-RS。
541 , 用户终端根据上述监测的 CRS和 CSI-RS, 判断 CRS和 CSI-RS, 是否都产生了无线链路失败。
其中， 本发明实施例三中的 CRS可以为宏小区发送的 CRS; 本发明实 施例三中的 CSI-RS可以为 CoMP集中的 RRH发送的 CSI-RS。
542, 如果上述用户终端判断出上述宏小区发送的 CRS和该 CoMP集 中的 RRH发送的 CSI-RS都产生了无线链路失败， 上述用户终端发起 RRC 连接重建立。
可选地， 本发明实施例三所述方法， 还可以包括：
543 , 如果上述用户终端判断出该宏小区和该 CoMP集中的 RRH发送 的参考信号没有产生无线链路失败或不全都产生了无线链路失败， 上述用 户终端则不发起 RRC连接重建立。
作为一个示例， 本发明实施例三中， 上述用户终端判断宏小区发送的 CRS和该 CoMP集中的 RRH发送的 CSI-RS是否都产生了无线链路失败， 可以参考本发明实施例一中所述， 包括： S41-1 ,上述用户终端的物理层根据参考信号（该参考信号可以是 CRS, 也可以是 CSI-RS ) 向用户终端发送失步指示或同步指示。
作为一个示例， 用户终端监测 CRS和 CSI-RS的信号质量， 如果 CRS 或者 CSI-RS的信号质量满足同步或失步要求，则该用户终端的的物理层向 上述用户终端的 RRC层发送失步指示或同步指示。 上述用户终端的物理层 如何根据参考信号向用户终端发送失步指示和同步指示， 可参考 3GPP TS 36.133 , 这里不再赘述， 也不作限制。
S41-2,上述用户终端的 RRC层根据失步指示或同步指示，判断该参考 信号是否都产生了无线链路失败。
可选地， 本发明实施例三中所述方法， 可以还包括：
544, 上述用户终端根据上述 CoMP集中的某一个 RRH发送的 CSI-RS 判断该 CSI-RS是否产生了无线链路失败。
545 , 如果上述用户终端判断出上述 CoMP 集中的 RRH 中的某一个 RRH发送 CSI-RS产生了无线链路失败，该用户终端将这个 RRH从该 CoMP 集中删除。
应用本发明实施例三提供的技术方案， 用户终端根据 CRS 和 CSI-RS 来判断是否发起 RRC连接重建立，而非仅仅根据 CRS来判断是否发起 RRC 连接重建立。 因此， 用户终端可以更准确地对无线链路进行监测， 并及时 进行 RRC连接重建立， 减少误判的产生， 从而提高了用户终端的体验。 具 体地， 在宏小区发送 CRS, CoMP集中的 RRH只发送 CSI-RS的情况下， 当用户终端在宏小区边缘， 如果用户终端只根据宏小区发送的 CRS进行无 线链路失败的监测， 这时宏小区发送的 CRS的信号质量较差， 用户终端判 断出产生了无线链路失败，于是用户终端就会发送 RRC连接重建立。但是， 实际可能存在距离用户终端比宏基站更近的 RRH,这些 RRH发送的 CSI-RS 的信号质量较好， 用户终端实际并不需要发起 RRC连接重建立， 这样就产 生了误判。 因此， 本发明实施例三提供的技术方案， 通过用户终端判断出 宏小区发送的 CRS和 CoMP集中的 RRH发送的 CSI-RS都产生了无线链路 失败， 才发起 RRC连接重建立， 可以避免这种误判， 从而提高用户终端的 体验。
更进一步， 用户终端还可以对 CoMP集中的 RRH中的某一个 RRH发 送 CSI-RS判断是否产生了无线链路失败，如果某一个 RRH发送 CSI-RS发 生了无线链路失败， 则将这个 RRH从 CoMP集中的 RRH中删除。 在为上 述用户终端服务的 CoMP集中的 RRH总数有限的情况下，删除信号质量较 差的 RRH, , 从而可以将能够为用户终端提供参考信号质量好的 RRH及时 添加进该 CoMP集中， 以供上述用户终端使用， 从而提高了用户的感受 本发明实施例四， 提供一种无线链路监测的装置， 如图 5 ( 1 ) 所示， 该装置包括：
监测单元 50, 用于监测 CRS和 CSI-RS。
判断单元 51 , 用于根据监测的 CRS和 CSI-RS, 判断是否发起 RRC连 接重建立。
可选地， 本发明实施例四中， 判断单元 51具体包括： 物理层单元 51-1 和 RRC层单元 51-2;
其中，
物理层单元 51-1 , 根据 CRS和 CSI-RS向所述判断单元 51的 RRC层 单元 51-2发送失步指示或同步指示； RRC层单元 51-2, 用于根据上述失步 指示或同步指示，判断是否产生了无线链路失败；如果是， RRC层单元 51-2 判断出需要发起 RRC连接重建立； 如果不是， RRC层单元 51-2判断出不 需要发起 RRC连接重建立。
更进一步， 物理层单元 51-1 , 根据 CRS和 CSI-RS向判断单元 51 的 RRC层单元 51-2发送的失步指示或同步指示中包含标识，该标识用于 RRC 层单元 51-2识别失步 CRS的失步指示或同步指示， 以及所述 CSI-RS的失 步指示或同步指示。
作为一个示例 ,监测单元 50具体用于监测宏小区发送的 CRS和 CoMP 集中的 RRH发送的 CRS , 以及 CoMP集中的 RRH发送的 CSI-RS。 相应 地，判断单元 51具体用于根据所述 CRS和所述 CSI-RS判断所述 CRS和所 述 CSI-RS至少之一， 是否产生了无线链路失败； 如果是， 所述判断单元 51 判断出需要发起 RRC连接重建立； 如果否， 所述判断单元 51判断出不需 要发起 RRC连接重建立。。
作为另外一个示例， 监测单元 50 还可以具体用于监测宏小区发送的 CRS, 以及 CoMP集中的 RRH发送的 CSI-RS。 这种情况下， 宏小区发送 CRS, CoMP集中的 RRH只发送 CSI-RS。 相应地， 判断单元 51具体用于 根据所述 CRS和所述 CSI-RS判断所述 CRS和所述 CSI-RS是否都产生了 无线链路失败； 如果是， 所述判断单元 51判断出需要发起 RRC连接重建 立； 如果否， 所述判断单元 51判断出不需要发起 RRC连接重建立。。
可选地， 如图 5 ( 2 ), 所述装置还包括： 重建立单元 52, 用于如果所 述判断单元 51判断出需要发起 RRC连接重建立，所述重建立单元发起 RRC 连接重建立。
可选地， 所述判断单元 51还用于判断所述 CoMP集中的 RRH的哪一 个 RRH发送的 CSI-RS产生了无线链路失败。 相应地， 如图 5 ( 3 ), 本发 明实施例四所述装置中还包括：
删除单元 53 ,用于如果上述判断单元 51判断出上述 CoMP集中的 RRH 的某一个 RRH发送的 CSI-RS产生了无线链路失败，该删除单元 53将这个 RRH从该 CoMP集中删除。
本发明实施例四提供的无线链路监测的装置， 可以执行本发明实施例 一至实施例三任一个所述的方法， 本领域技术人员可以理解， 对于方法实 施例中的步骤， 在装置中可以有相应的单元来执行， 这些单元可以集成在 一起， 也可以分别独立存在， 这里不作限制。 本发明实施例中装置的划分， 可以按照功能来划分（例如， 将判断单元 51按照执行方法步骤不同， 划分 为不同的功能单元）， 也可以按照通信协议进行划分（例如将判断单元 51 , 划分为物理层单元 51-1和 RRC层单元 51-2 ), 这里不作限制。 更进一步， 本发明实施例四提供的装置， 为了执行方法实施例中的动作或者步骤， 还 可以包括其他电子线路、 接口和电子装置， 在此不再赘述。
应用本发明实施例四提供的技术方案， 无线链路监测的装置， 该装置 根据 CRS和 CSI-RS来判断是否发起 RRC连接重建立， 而非仅仅根据 CRS 来判断是否发起 RRC连接重建立。 因此， 该装置可以更准确地对无线链路 进行监测， 并及时进行 RRC连接重建立， 减少误判的产生， 从而提高了用 户终端的体验。
更进一步， 该无线链路监测的装置， 还可以对 CoMP集中的 RRH中的 某一个 RRH发送 CSI-RS判断是否产生了无线链路失败，在如果某一个 RRH 发送 CSI-RS发生了无线链路失败的情况下， 通过删除单元将这个 RRH从 CoMP集中的 RRH中删除。 在为无线链路监测的装置服务的 CoMP集中的 RRH总数有限的情况下， 删除发送信号质量较差的 RRH, 从而可以将能够 为该无线链路监测的装置提供参考信号质量好的 RRH及时添加进该 CoMP 集中， 以供该装置使用。
本发明实施例四提供的无线链路监测的装置， 可以包含于用户终端中。 应用本发明实施例提供的装置的用户终端， 也可以解决上述技术问题并产 生相应的技术效果。 在某些实施例中， 对于熟知的方法、 接口、 设备信令技术未进行具体 描述， 以免因不必要的细节使得本发明模糊。 本领域普通技术人员可以理 解实现上述实施例方法中的全部或者部分步骤是可以通过程序来指示相关 的硬件来完成， 所述的程序可以存储于一计算机可读存储介质中， 所述的 存储介质， 如： 只读存储记忆体（Read-Only Memory, ROM )或随机存储 记忆体 ( Random Access Memory, RAM ), 磁碟、 光盘等。
以上所述的具体实施方式， 对本发明的目的、 技术方案和有益效果进 行了进一步详细说明， 所应理解的是， 以上所述仅为本发明的具体实施方 式而已， 并不用于限定本发明的保护范围， 本领域技术人员在不付出创造 性劳动的基础上， 所做的任何修改、 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
1、 一种无线链路监测的方法， 其特征在于， 包括：
用户终端监测小区特定参考信号 CRS 和信道状态指示参考信号 CSI-RS;
所述用户终端根据所述 CRS和所述 CSI-RS判断是否发起无线资源控 制 RRC连接重建立。
2、 如权利要求 1所述的方法， 其特征在于，
所述 CRS为宏小区发送的 CRS和多点协调发送 /接收 CoMP集中的射 频远程端口 RRH发送的 CRS;
所述 CSI-RS为所述 CoMP集中的 RRH发送的 CSI-RS。
3、 如权利要求 1 或 2 所述的方法， 其特征在于， 所述用户终端根据所述 CRS和所述 CSI-RS, 判断是否发起 RRC连接重建立， 包括：
所述用户终端判断所述 CRS和所述 CSI-RS至少之一， 是否产生了无 线链路失败；
如果是， 所述用户终端发起 RRC连接重建立。
4、 如权利要求 1所述的方法， 其特征在于，
所述 CRS为宏小区发送的 CRS;
所述 CSI-RS为多点协调发送 /接收 CoMP集中的射频远程端口 RRH发 送的 CSI-RS。
5、 如权利要求 1 或 4 所述的方法， 其特征在于， 所述用户终端根据所述 CRS和所述 CSI-RS, 判断是否发起 RRC连接重建立， 包括：
所述用户终端判断所述 CRS和所述 CSI-RS,是否都产生了无线链路失 败；
如果是， 所述用户终端进行 RRC连接重建立
6、 如权利要求 2-5任意一项所述的方法， 其特征在于， 所述方法还包括： 所述用户终端判断所述 CoMP集中的 RRH的一个 RRH是否产生了无 线链路失败；
如果所述用户终端判断出所述 CoMP集中的 RRH的一个 RRH发送的 CSI-RS产生了无线链路失败，所述用户终端将所述一个 RRH从所述 CoMP 集中删除。
7、 如权利要求 1 所述的方法， 其特征在于， 所述用户终端根据所述 CRS 和所述 CSI-RS, 判断是否发起 RRC连接重建立， 包括：
所述用户终端的物理层根据所述 CRS和所述 CSI-RS,向所述用户终端 的 RRC层发送所述 CRS的失步指示或同步指示， 以及所述 CSI-RS的失步 指示或同步指示；
所述用户终端的 RRC层根据所述 CRS的失步指示或同步指示，以及所 述 CSI-RS的失步指示或同步指示， 判断是否发起 RRC连接重建立。
8、 如权利要求 7所述的方法， 其特征在于， 所述用户终端的物理层根据所 述 CRS和所述 CSI-RS,向所述用户终端的 RRC层发送所述 CRS的失步指 示或同步指示， 以及所述 CSI-RS的失步指示， 包括：
所述用户终端的物理层根据所述 CRS和所述 CSI-RS,向所述用户终端 的 RRC层发送失步指示或同步指示， 所述失步指示或所述同步指示包含标 识，所述标识用于所述用户终端的 RRC层识别所述 CRS的失步指示或同步 指示， 以及所述 CSI-RS的失步指示或同步指示。
9、 一种无线链路监测的装置， 其特征在于， 包括：
监测单元， 用于监测小区特定参考信号 CRS和信道状态指示参考信号 CSI-RS;
判断单元， 用于根据所述 CRS和所述 CSI-RS, 判断是否发起无线资源 控制 RRC连接重建立。
10、 如权利要求 9所述的装置， 其特征在于， 所述监测单元具体用于监测 宏小区发送的 CRS和多点协调发送 /接收 CoMP集中的射频远程端口 RRH 发送的 CRS;和所述 CoMP集中的 RRH发送的 CSI-RS。
11、 如权利要求 10所述的装置， 其特征在于， 所述判断单元具体用于根据 所述 CRS和所述 CSI-RS判断所述 CRS和所述 CSI-RS至少之一， 是否产 生了无线链路失败； 如果是， 所述判断单元判断出需要发起 RRC连接重建 立。
12、 如权利要求 9所述的装置， 其特征在于， 所述监测单元具体用于监测 宏小区发送的 CRS; 和
多点协调发送 /接收 CoMP集中的射频远程端口 RRH发送的 CSI-RS。
13、 如权利要求 12所述的装置， 其特征在于， 所述判断单元具体用于根据 所述 CRS和所述 CSI-RS判断所述 CRS和所述 CSI-RS是否都产生了无线 链路失败； 如果是， 所述判断单元判断出需要发起 RRC连接重建立。
14、 如权利要求 9-13任意一项所述的装置， 其特征在于， 所述装置还包括： 重建立单元，用于如果所述判断单元判断出需要发起 RRC连接重建立， 所述重建立单元发起 RRC连接重建立。
15、 如权利要求 9-14任意一项所述的装置， 其特征在于， 所述判断单元还 用于判断所述 CoMP集中的 RRH的一个 RRH发送的 CSI-RS产生了无线链 路失败； 所述装置还包括：
删除单元，用于如果所述判断单元判断出所述 CoMP集中的 RRH的一 个 RRH发送的 CSI-RS产生了无线链路失败，所述删除单元将所述一个 RRH 从所述 CoMP集中删除。
16、 如权利要求 9所述的装置， 其特征在于， 所述判断单元包括： 物理层 单元和 RRC层单元；
其中， 所述物理层单元用于根据所述 CRS和所述 CSI-RS向所述装置 的 RRC层发送失步指示或同步指示； 所述 RRC层单元用于根据所述失步 指示或所述同步指示， 判断是否发起 RRC连接重建立。
17、 如权利要求 16所述的装置， 其特征在于， 所述物理层单元具体用于所 述物理层单元根据所述 CRS和所述 CSI-RS, 向所述用户终端的 RRC层发 送失步指示或同步指示， 所述失步指示或所述同步指示中包含标识， 所述 标识用于所述 RRC单元识别所述 CRS的失步指示或同步指示， 以及所述 CSI-RS的失步指示或同步指示。
PCT/CN2012/080427 2012-08-21 2012-08-21 一种无线链路监测的方法和装置 WO2014029080A1 (zh)

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