WO2019153284A1 - 无线链路监测方法及相关设备 - Google Patents

无线链路监测方法及相关设备 Download PDF

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Publication number
WO2019153284A1
WO2019153284A1 PCT/CN2018/076074 CN2018076074W WO2019153284A1 WO 2019153284 A1 WO2019153284 A1 WO 2019153284A1 CN 2018076074 W CN2018076074 W CN 2018076074W WO 2019153284 A1 WO2019153284 A1 WO 2019153284A1
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WIPO (PCT)
Prior art keywords
user equipment
rlm
message
configuration
reconfiguration
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Application number
PCT/CN2018/076074
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English (en)
French (fr)
Inventor
杨宁
Original Assignee
Oppo广东移动通信有限公司
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 Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2018/076074 priority Critical patent/WO2019153284A1/zh
Priority to CN201880036986.4A priority patent/CN110731107B/zh
Publication of WO2019153284A1 publication Critical patent/WO2019153284A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a wireless link monitoring method and related devices.
  • Radio Link Monitor refers to the user equipment (User Equipment, UE) monitoring the downlink radio link quality of the serving cell at the physical layer to monitor that the radio link is in synchronization (In-Sync, IN). The status is still in the Out-Of-Sync (OOS) state.
  • OOS Out-Of-Sync
  • NR new radio
  • the RLM configuration can be configured by the network device to configure the RLM configuration information configured by the user equipment.
  • the embodiment of the present application provides a wireless link monitoring method and related device, which are used to reduce the delay.
  • an embodiment of the present application provides a radio link monitoring method, including:
  • the user equipment After the user equipment receives the first out message from the network device after the user equipment detects the out-of-synchronization state, the user equipment performs RLM based on the original RLM configuration, where the first message is used to indicate reconfiguration wireless.
  • the link monitors the RLM configuration.
  • the embodiment of the present application provides a user equipment, including:
  • a processing unit configured to perform RLM based on an original RLM configuration, where the user equipment receives the first message from the network device after the user equipment detects the out-of-synchronization state, where the first message is used to indicate Reconfigure the wireless link to monitor the RLM configuration.
  • an embodiment of the present application provides a user equipment, including one or more processors, one or more memories, one or more transceivers, and one or more programs, where the one or more programs are Stored in the memory and configured to be executed by the one or more processors, the program comprising instructions for performing the steps in the method of the first aspect.
  • an embodiment of the present application provides a computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the portion described by the method of the first aspect or Instructions for all steps.
  • an embodiment of the present application provides a computer program product, where the computer program product includes a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the first aspect
  • the instructions of some or all of the steps described in the method can be a software installation package.
  • the user equipment after the user equipment receives the out-of-synchronization state, if the user equipment receives the first message from the network device for indicating the reconfiguration of the RLM configuration, the user equipment does not perform corresponding operations on the first message.
  • the user equipment performs RLM based on the original RLM configuration. This avoids the problem of delays in RLF discovery and announcements caused by resetting the RLM configuration, which in turn reduces latency.
  • FIG. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a user equipment according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • 4A is a schematic flowchart of a method for monitoring a wireless link according to an embodiment of the present application
  • 4B is a schematic diagram of a conventional radio link monitoring method according to an embodiment of the present application.
  • 4C is a schematic diagram of a conventional radio link recovery according to an embodiment of the present application.
  • 4D is a schematic diagram of a conventional radio link failure provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another user equipment according to an embodiment of the present application.
  • FIG. 1 shows a wireless communication system to which the present application relates.
  • the wireless communication system is not limited to a Long Term Evolution (LTE) system, and may be a fifth-generation mobile communication (the 5th Generation, 5G) system, an NR system, and a machine to machine communication (Machine to Machine, M2M) system, etc.
  • LTE Long Term Evolution
  • 5G fifth-generation mobile communication
  • NR NR
  • M2M Machine to Machine
  • wireless communication system 100 can include one or more network devices 101 and one or more user devices 102. among them:
  • the network device 101 may be a base station, and the base station may be used to communicate with one or more user equipments, or may be used to communicate with one or more base stations having partial user equipment functions (such as a macro base station and a micro base station, such as access). Point, communication between).
  • the base station may be a Base Transceiver Station (BTS) in a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, or may be an evolved base station in an LTE system (Evolutional Node B). , eNB), and base stations in 5G systems, new air interface (NR) systems.
  • the base station may also be an Access Point (AP), a TransNode (Trans TRP), a Central Unit (CU), or other network entity, and may include some or all of the functions of the above network entities. .
  • User equipment 102 may be distributed throughout wireless communication system 100, either stationary or mobile.
  • terminal 102 may be a mobile device, a mobile station, a mobile unit, an M2M terminal, a wireless unit, a remote unit, a user agent, a mobile client, and the like.
  • network device 101 can be used to communicate with user device 102 over wireless interface 103 under the control of a network device controller (not shown).
  • the network device controller may be part of the core network or may be integrated into the network device 101.
  • the network device 101 and the network device 101 can also communicate with each other directly or indirectly via a blackhaul interface 104 (such as an X2 interface).
  • the related configuration of the RLM can be configured by the network device to the RLM configuration information configured by the user equipment. If the user equipment performs RLM configuration based on the RLM configuration information originally configured by the network device to the user equipment, and the physical layer of the user equipment performs RLM based on the configured RLM configuration. When the user equipment detects that the wireless link is out of synchronization, but the RRC layer of the user equipment does not receive the out-of-synchronization indication message reported by the physical layer, the user equipment receives the information from the network device for indicating the reconfiguration of the RLM configuration.
  • the message if the user equipment reconfigures the RLM configuration for the message, the user equipment needs to reconfigure the RLM parameter configuration, the RLM timer configuration, and the RLM counter configuration, which causes the RLF discovery and the RLF statement to be delayed, because the RLF is the user equipment.
  • the scenario where the signal quality is low and does not meet the service requirements will increase the delay of the user equipment.
  • the user equipment After the user equipment receives the out-of-synchronization state, if the user equipment receives the first message from the network device for indicating the reconfiguration of the RLM configuration, the user equipment does not perform a corresponding operation on the first message, the user equipment The RLM is performed based on the original RLM configuration. This avoids the problem of delays in RLF discovery and announcements caused by resetting the RLM configuration, which in turn reduces latency.
  • the wireless communication system 100 shown in FIG. 1 is only for the purpose of more clearly explaining the technical solutions of the present application, and does not constitute a limitation of the present application.
  • Those skilled in the art may know that with the evolution of the network architecture and new services, The appearance of the scenario, the technical solution provided by the present application is equally applicable to similar technical problems.
  • user equipment 200 can include: one or more user equipment processors 201, memory 202, communication interface 203, receiver 205, transmitter 206, coupler 207, antenna 208, user interface 202, and inputs.
  • the output module (including the audio input and output module 210, the key input module 211, the display 212, and the like). These components can be connected by bus 204 or other means, and FIG. 2 is exemplified by a bus connection. among them:
  • Communication interface 203 can be used for user equipment 200 to communicate with other communication devices, such as network devices.
  • the network device may be the network device 300 shown in FIG. 3.
  • the communication interface 203 may be a Long Term Evolution (LTE) (4G) communication interface, or may be a 5G or a future communication interface of a new air interface.
  • LTE Long Term Evolution
  • 5G Fifth Generation
  • the user equipment 200 may also be configured with a wired communication interface 203, such as a Local Access Network (LAN) interface.
  • LAN Local Access Network
  • Transmitter 206 can be used to perform transmission processing, such as signal modulation, on signals output by user equipment processor 201.
  • Receiver 205 can be used to perform reception processing, such as signal demodulation, on the mobile communication signals received by antenna 208.
  • transmitter 206 and receiver 205 can be viewed as a wireless modem. In the user equipment 200, the number of the transmitter 206 and the receiver 205 may each be one or more.
  • the antenna 208 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in free space, or to convert electromagnetic waves in free space into electromagnetic energy in a transmission line.
  • the coupler 207 is configured to divide the mobile communication signal received by the antenna 308 into multiple channels and distribute it to a plurality of receivers 205.
  • the user equipment 200 may also include other communication components such as a GPS module, a Bluetooth module, a Wireless Fidelity (Wi-Fi) module, and the like. Without being limited to the wireless communication signals described above, the user equipment 200 may also support other wireless communication signals, such as satellite signals, short wave signals, and the like. Not limited to wireless communication, the user equipment 200 may also be configured with a wired network interface (such as a LAN interface) to support wired communication.
  • a wired network interface such as a LAN interface
  • the input and output module can be used to implement interaction between the household device 200 and the user/external environment, and can mainly include an audio input and output module 210, a key input module 211, a display 212, and the like. Specifically, the input and output module may further include: a camera, a touch screen, a sensor, and the like. The input and output modules communicate with the user equipment processor 201 through the user interface 209.
  • Memory 202 is coupled to terminal processor 201 for storing various software programs and/or sets of instructions.
  • memory 202 can include high speed random access memory, and can also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid state storage devices.
  • the memory 202 can store an operating system (hereinafter referred to as a system) such as an embedded operating system such as ANDROID, IOS, WINDOWS, or LINUX.
  • the memory 202 can also store a network communication program that can be used to communicate with one or more additional devices, one or more user devices, one or more network devices.
  • the memory 202 can also store a user interface program, which can realistically display the content of the application through a graphical operation interface, and receive user control operations on the application through input controls such as menus, dialog boxes, and keys. .
  • the memory 202 may be used to store an implementation program of the PDCP entity configuration method provided by one or more embodiments of the present application on the user equipment 200 side.
  • the PDCP entity configuration method provided by one or more embodiments of the present application please refer to the following method embodiments.
  • user device processor 201 is operable to read and execute computer readable instructions. Specifically, the user equipment processor 201 can be used to invoke a program stored in the memory 212. For example, the configuration method of the PDCP entity provided by one or more embodiments of the present application is implemented on the user equipment 200 side, and the program is executed. Instructions.
  • the user equipment 200 shown in FIG. 2 is only one implementation of the embodiment of the present application. In an actual application, the user equipment 200 may further include more or fewer components, which are not limited herein.
  • FIG. 3 illustrates a network device 300 provided by some embodiments of the present application.
  • network device 300 can include one or more network device processors 301, memory 302, communication interface 303, transmitter 305, receiver 306, coupler 307, and antenna 308. These components can be connected via bus 304 or other types, and FIG. 4 is exemplified by a bus connection. among them:
  • Communication interface 303 can be used by network device 300 to communicate with other communication devices, such as user devices or other network devices.
  • the user equipment may be the user equipment 200 shown in FIG. 2.
  • the communication interface 303 may be a Long Term Evolution (LTE) (4G) communication interface, or may be a 5G or a future communication interface of a new air interface.
  • LTE Long Term Evolution
  • the network device 300 may also be configured with a wired communication interface 303 to support wired communication.
  • the backhaul link between one network device 300 and other network devices 300 may be a wired communication connection.
  • Transmitter 305 can be used to perform transmission processing, such as signal modulation, on signals output by network device processor 301.
  • Receiver 306 can be used to perform reception processing on the mobile communication signals received by antenna 308. For example, signal demodulation.
  • transmitter 305 and receiver 306 can be viewed as a wireless modem. In the network device 300, the number of the transmitter 305 and the receiver 306 may each be one or more.
  • the antenna 308 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in free space, or to convert electromagnetic waves in free space into electromagnetic energy in a transmission line.
  • Coupler 307 can be used to divide the mobile pass signal into multiple channels and distribute it to multiple receivers 306.
  • Memory 302 is coupled to network device processor 301 for storing various software programs and/or sets of instructions.
  • memory 302 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid state storage devices.
  • the memory 302 can store an operating system (hereinafter referred to as a system) such as an embedded operating system such as uCOS, VxWorks, or RTLinux.
  • the memory 402 can also store a network communication program that can be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices.
  • the network device processor 301 can be used to perform wireless channel management, implement call and communication link establishment and teardown, and provide cell handover control and the like for users in the control area.
  • the network device processor 301 may include: an Administration Module/Communication Module (AM/CM) (a center for voice exchange and information exchange), and a Basic Module (BM). Complete call processing, signaling processing, radio resource management, radio link management and circuit maintenance functions, Transcoder and SubMultiplexer (TCSM) (for multiplexing demultiplexing and code conversion) Function) and so on.
  • AM/CM Administration Module/Communication Module
  • BM Basic Module
  • TCSM Transcoder and SubMultiplexer
  • the memory 302 can be used to store an implementation program of the PDCP entity configuration method provided by one or more embodiments of the present application on the network device 300 side.
  • the PDCP entity configuration method provided by one or more embodiments of the present application please refer to the following method embodiments.
  • the network device processor 301 can be used to read and execute computer readable instructions. Specifically, the network device processor 301 can be used to invoke a program stored in the memory 302. For example, the configuration method of the PDCP entity provided by one or more embodiments of the present application is implemented on the network device 300 side, and the program is executed. Instructions.
  • the network device 300 shown in FIG. 3 is only one implementation of the embodiment of the present application. In actual applications, the network device 300 may further include more or fewer components, which are not limited herein.
  • the embodiment of the present application provides a wireless link monitoring method.
  • FIG. 4 is a schematic flowchart of a method for monitoring a wireless link according to an embodiment of the present application, including the following steps:
  • Step 401 In the case that the user equipment receives the first message from the network device after the user equipment detects the out-of-synchronization state, the user equipment performs RLM based on the original RLM configuration, where the first message is used to indicate Reconfigure the wireless link to monitor the RLM configuration.
  • the first message that the user equipment receives from the network device may be that the user equipment receives the first message that the network device sends directly to the user equipment, or that the user equipment receives the first message that the network device forwards to the user equipment by using another device, where This is not limited.
  • the first message includes RLM reconfiguration signaling, and the RLM reconfiguration signaling indicates reconfiguration radio link monitoring RLM configuration.
  • the first message may be carried in the data sent by the network device to the user equipment, or the first message may be carried in the downlink signaling sent by the network device to the user equipment, or the first message may be carried.
  • the downlink message and the like sent by the network device to the user equipment are not limited herein.
  • the first message includes the RLM configuration information newly configured by the network device to the user equipment.
  • the RLM configuration information includes RLM parameter information, and the RLM parameter information includes reference signal (RS) type information, RS information, and RS quantity information.
  • RS reference signal
  • the RS includes the following types: a synchronization signal PSS and a SSS (Primary Synchronization Signal/Secondary Synchronization Signal), a demodulation reference signal (DM-RS), and a Sounding Reference Signal (SRS).
  • a synchronization signal PSS and a SSS Primary Synchronization Signal/Secondary Synchronization Signal
  • DM-RS demodulation reference signal
  • SRS Sounding Reference Signal
  • Cell-specific Reference Signal CRS
  • MBSFN-RS multicast single frequency network reference signal
  • UE-specific RS user equipment-specific reference signal
  • PRS Positioning reference signals
  • CSI-RS channel spatial information reference signals
  • the RLM configuration includes at least one of the following: an RLM parameter configuration, an RLM timer configuration, and an RLM counter configuration.
  • the RLM parameter configuration includes at least one of the following: an RS type configuration, an RS configuration, and an RS quantity configuration.
  • the first message includes RLM reconfiguration signaling
  • the RLM reconfiguration signaling is used to indicate that the reconfiguration radio link monitors the RLM configuration
  • the first message includes the network.
  • the downlink signaling sent by the device to the user equipment, or the first message includes a downlink message sent by the network device to the user equipment, and the like.
  • the method further includes:
  • the user equipment If the downlink quality estimated by the user equipment is less than or equal to the first threshold, the user equipment detects an out-of-synchronization state; and the estimated downlink quality of the user equipment is greater than or equal to the second gate. In the case of a limit value, the user equipment detects a synchronization status.
  • the first threshold value may be the threshold value Q out , and may be other threshold values used for determining the out-of-synchronization state, which is not limited herein.
  • the threshold Q out is defined as the downlink radio link quality level when the user equipment cannot reliably receive the downlink radio link, and the block error ratio (BLER) of the downlink control channel transmission under the assumption is 10%.
  • the second threshold value may be the threshold value Q in or other threshold value for determining the synchronization state, which is not limited herein.
  • the threshold value Q in is defined as the downlink radio link quality level when the user equipment can effectively and reliably receive the downlink radio link, which is equivalent to 2% of the block error ratio (BLER) of the downlink control channel transmission under the assumption condition. .
  • BLER block error ratio
  • the method further includes:
  • the user equipment When the user equipment detects the out-of-synchronization state, the user equipment sends an out-of-synchronization indication message to the upper layer of the user equipment; in the case that the user equipment detects the synchronization status, the user equipment The upper layer of the user equipment sends a synchronization indication message.
  • the upper layer of the user equipment refers to a Radio Resource Control (RRC) layer.
  • RRC Radio Resource Control
  • the demand for wireless link monitoring is for user equipment that is received by dual antennas.
  • the user equipment needs to monitor the downlink quality of the serving cell at a time interval of the physical layer, that is, the user equipment.
  • the physical layer needs to monitor the downlink quality of the serving cell at times T 0 , T 1 , T 2 , T n , T n+1 , T n+2 , .
  • the evaluation of the quality of the radio link by the user equipment at a certain time is based on the quality of the radio link within the time window T evaluate .
  • the user equipment needs to T n for a time [T 0, T n] within a period of the downlink quality assessment, evaluation results obtained link quality corresponding to the time T n; user equipment needs to T n + 1 at time [ The downlink quality in the period of T n, T n+1 ] is evaluated, and the link quality evaluation result corresponding to the time T n+1 is obtained.
  • T evaluate in Figure 4B the length of the corresponding evaluation time window (T evaluate in Figure 4B) is defined as:
  • the synchronization or out-of-synchronization evaluation time window depends on the length of the DRX cycle.
  • the time window is estimated to be 200 ms.
  • the wireless link is normal and the user equipment physical layer needs to perform out-of-synchronization monitoring.
  • the user equipment detects the out-of-synchronization state, and the physical layer of the user equipment needs to send an out-of-synchronization indication message to the upper layer of the user equipment.
  • the user equipment receives high N310 consecutive sync indication message, the user equipment need to turn the timer T310, the timer T310 is turned on during when the downlink quality estimation apparatus of a user above a threshold value Q in, the user equipment The synchronization state is monitored, and the physical layer of the user equipment needs to send a synchronization indication message to the upper layer of the user equipment.
  • the user equipment receives consecutive N311 synchronization indications (as shown in FIG. 4C) before the timer T310 times out, the downlink is restored to normal, and the user equipment turns off the timer T310.
  • the user equipment does not receive consecutive N311 synchronization indications (as shown in FIG. 4D) before the timer T310 times out, a radio link failure (RLF) occurs, the user equipment declares the RLF, and the user equipment starts.
  • the timer T311 performs cell search and cell selection, and finds a suitable cell before the timer expires, and the user equipment initiates an RRC connection reestablishment process to the suitable cell.
  • the related configuration of the RLM can be configured by the network device to the RLM configuration information configured by the user equipment. If the user equipment performs RLM configuration based on the RLM configuration information originally configured by the network device to the user equipment, and the physical layer of the user equipment performs RLM based on the configured RLM configuration. When the user equipment detects that the wireless link is out of synchronization, but the RRC layer of the user equipment does not receive the out-of-synchronization indication message reported by the physical layer, the user equipment receives the information from the network device for indicating the reconfiguration of the RLM configuration.
  • the message if the user equipment reconfigures the RLM configuration for the message, the user equipment needs to reconfigure the RLM parameter configuration, the RLM timer configuration, and the RLM counter configuration, which causes the RLF discovery and the RLF statement to be delayed, because the RLF is the user equipment.
  • the scenario where the signal quality is low and does not meet the service requirements will increase the delay of the user equipment.
  • the user equipment After the user equipment receives the out-of-synchronization state, if the user equipment receives the first message from the network device for indicating the reconfiguration of the RLM configuration, the user equipment does not perform a corresponding operation on the first message, the user equipment The RLM is performed based on the original RLM configuration. This avoids the problem of delays in RLF discovery and announcements caused by resetting the RLM configuration, which in turn reduces latency.
  • the physical layer of the user equipment uses the extended evaluation time interval to the downlink quality of the serving cell, and the extended evaluation time interval is greater than the currently defined evaluation time interval. This can increase the period of monitoring the wireless link and reduce the monitoring frequency, thereby reducing the power consumption of the user equipment and saving equipment costs.
  • the extended evaluation time interval may be configured by the network device to the user equipment, and specifically, the network device may notify the UE by using an RRC message.
  • the method further includes:
  • the user equipment If the user equipment does not detect the out-of-synchronization state, and the user equipment receives the first message from the network device, the user equipment reconfigures the RLM configuration according to the first message, and is based on the newly configured The RLM configuration is for RLM.
  • the first message includes the RLM configuration information newly configured by the network device to the user equipment.
  • the specific implementation manner of the user equipment reconfiguring the RLM according to the first message is: the user equipment reconfigures the RLM configuration according to the newly configured RLM configuration information included in the first message.
  • the user equipment if the user equipment does not detect the out-of-synchronization state, if the user equipment receives the first message from the network device, the user equipment reconfigures the RLM configuration according to the first message in time, so that the user equipment is based on the new configuration in time.
  • the RLM configuration performs RLM to improve the accuracy of wireless link monitoring.
  • the method further includes:
  • the user equipment feeds back a second message to the network device for the first message, where the second message is used to indicate that the reconfiguration RLM configuration fails or refuses to reconfigure the RLM configuration.
  • the second message includes RLM reconfiguration failure signaling or RLM reconfiguration rejection signaling, and the RLM reconfiguration failure signaling or the RLM reconfiguration rejection signaling is used to indicate heavy The configuration of the RLM configuration failed or refused to reconfigure the RLM configuration.
  • the second message may be carried in the data sent by the user equipment to the network device, or the first message may be carried in the uplink signaling sent by the user equipment to the network device, or the first message may be carried.
  • the uplink message and the like sent by the user equipment to the network device are not limited herein.
  • the second message includes a reason that the reset RLM configuration fails or the reject reconfiguration RLM configuration.
  • the reason includes that the user equipment has detected an out-of-synchronization indication message.
  • FIG. 5 is a user equipment 500 according to an embodiment of the present application.
  • the user equipment 500 includes: one or more processors, one or more memories, one or more transceivers, and one or more Program
  • the one or more programs are stored in the memory and configured to be executed by the one or more processors;
  • the program includes instructions for performing the following steps:
  • the user equipment After the user equipment detects the out-of-synchronization state, receiving a first message from the network device, where the first message is used to indicate that the reconfiguration radio link monitors the RLM configuration;
  • the RLM is performed based on the original RLM configuration.
  • the user equipment after the user equipment receives the out-of-synchronization state, if the user equipment receives the first message from the network device for indicating the reconfiguration of the RLM configuration, the user equipment does not perform corresponding operations on the first message.
  • the user equipment performs RLM based on the original RLM configuration. This avoids the problem of delays in RLF discovery and announcements caused by resetting the RLM configuration, which in turn reduces latency.
  • the program includes instructions that are also used to perform the following steps:
  • the user equipment receives the first message from the network device, reconfigures the RLM configuration according to the first message, and performs RLM based on the newly configured RLM configuration. .
  • the program includes instructions further for performing the following steps:
  • the second message includes a reason that the reset RLM configuration fails or the reject reconfiguration RLM configuration.
  • the reason includes that the user equipment has detected an out-of-synchronization indication message.
  • the RLM configuration includes at least one of the following: an RLM parameter configuration, an RLM timer configuration, and an RLM counter configuration.
  • the RLM parameter configuration includes at least one of the following: a reference signal RS type configuration, an RS configuration, and an RS quantity configuration.
  • the first message includes RLM reconfiguration signaling.
  • the second message includes RLM reconfiguration failure signaling or RLM reconfiguration rejection signaling.
  • the program includes instructions that are also used to perform the following steps:
  • the user equipment detects an out-of-synchronization state if the estimated downlink quality of the user equipment is less than or equal to the first threshold.
  • the user equipment detects a synchronization status if the estimated downlink quality of the user equipment is greater than or equal to a second threshold.
  • the program includes instructions that are also used to perform the following steps:
  • the user equipment When the user equipment detects the out-of-synchronization state, the user equipment sends an out-of-synchronization indication message to a higher layer of the user equipment;
  • the user equipment When the user equipment detects the synchronization status, the user equipment sends a synchronization indication message to a higher layer of the user equipment.
  • FIG. 6 is a user equipment 600.
  • the user equipment 600 includes a processing unit 601, a communication unit 602, and a storage unit 603.
  • the processing unit 601 includes a receiving unit and a parameter adjusting unit, where :
  • the processing unit 601 is configured to: after the user equipment detects the out-of-synchronization state, receive a first message from the network device by using the communication unit 602, where the first message is used to indicate that the reconfiguration radio link monitors the RLM configuration;
  • the processing unit 601 is further configured to perform RLM based on the original RLM configuration.
  • the user equipment after the user equipment receives the out-of-synchronization state, if the user equipment receives the first message from the network device for indicating the reconfiguration of the RLM configuration, the user equipment does not perform corresponding operations on the first message.
  • the user equipment performs RLM based on the original RLM configuration. This avoids the problem of delays in RLF discovery and announcements caused by resetting the RLM configuration, which in turn reduces latency.
  • the processing unit 601 is further configured to: when the user equipment does not monitor the out-of-synchronization state, and the user equipment receives the first message from the network device, according to the A message reconfigures the RLM configuration and performs RLM based on the newly configured RLM configuration.
  • the processing unit 601 is further configured to feed back, by using the communication unit 602, the second message to the network device, where the second message is used to indicate that the reconfiguration RLM configuration fails or rejects the reconfiguration RLM configuration.
  • the second message includes a reason that the reset RLM configuration fails or the reject reconfiguration RLM configuration.
  • the reason includes that the user equipment has detected an out-of-synchronization indication message.
  • the RLM configuration includes at least one of the following: an RLM parameter configuration, an RLM timer configuration, and an RLM counter configuration.
  • the RLM parameter configuration includes at least one of the following: a reference signal RS type configuration, an RS configuration, and an RS quantity configuration.
  • the first message includes RLM reconfiguration signaling.
  • the second message includes RLM reconfiguration failure signaling or RLM reconfiguration rejection signaling.
  • the processing unit 601 is further configured to: when the estimated downlink quality of the user equipment is less than or equal to the first threshold, the out-of-synchronization state is monitored; and the estimated downlink quality of the user equipment is greater than or equal to In the case of the second threshold, the synchronization state is monitored.
  • the processing unit 601 is further configured to send, by using the communication unit 602, an out-of-synchronization indication message to the upper layer of the user equipment, where the user equipment detects the out-of-synchronization state;
  • the communication unit 602 sends a synchronization indication message to the upper layer of the user equipment.
  • the processing unit 601 may be a processor or a controller, and may be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application specific integrated circuit (Application- Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof, which may be implemented or executed in conjunction with the present disclosure.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC Application- Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 602 can be a transceiver, a transceiver circuit, a radio frequency chip, a communication interface, etc.
  • the storage unit 603 can be a memory.
  • the processing unit 601 is a processor
  • the communication unit 602 is a communication interface
  • the storage unit 603 is a memory
  • the user equipment involved in the embodiment of the present application may be the user equipment shown in FIG. 5.
  • the embodiment of the present application further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute a user in the method embodiment as described above Some or all of the steps described by the device.
  • the embodiment of the present application further provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to execute a user as in the above method Some or all of the steps described by the device.
  • the computer program product can be a software installation package.
  • the steps of the method or algorithm described in the embodiments of the present application may be implemented in a hardware manner, or may be implemented by a processor executing software instructions.
  • the software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable Programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in an access network device, a target network device, or a core network device. Of course, the processor and the storage medium may also exist as discrete components in the access network device, the target network device, or the core network device.
  • the functions described in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)). )Wait.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a digital video disc (DVD)
  • DVD digital video disc
  • SSD solid state disk

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Abstract

本申请实施例提供了一种无线链路监测方法及相关设备，方法包括：在用户设备监测到失步状态之后，所述用户设备接收来自网络设备的第一消息，所述第一消息用于指示重配置RLM配置；所述用户设备基于原有的RLM配置进行RLM。采用本申请实施例可降低时延。

Description

无线链路监测方法及相关设备 技术领域
本申请涉及通信技术领域，具体涉及一种无线链路监测方法及相关设备。
背景技术
无线链路监测(Radio Link Monitor，RLM)指的是用户设备(User Equipment，UE)在物理层监测服务小区的下行无线链路质量，以监测无线链路是处于同步(In-Sync，IN)状态还是处于失步(Out-Of-Sync，OOS)状态。为了满足人们对通信的高速率、低延迟、高移动性、高可靠性等需求，为此3GPP国际标准组织开始研发新空口(New Radio，NR)，目前，关于NR的讨论中，在针对无线链路进行监测方面，RLM的相关配置可通过网络设备给用户设备配置的RLM配置信息进行配置。
发明内容
本申请实施例提供了一种无线链路监测方法及相关设备，用于降低了时延。
第一方面，本申请实施例提供一种无线链路监测方法，包括：
在用户设备监测到失步状态之后，所述用户设备接收来自网络设备的第一消息的情况下，所述用户设备基于原有的RLM配置进行RLM，所述第一消息用于指示重配置无线链路监测RLM配置。
第二方面，本申请实施例提供一种用户设备，包括：
处理单元，用于在所述用户设备监测到失步状态之后，所述用户设备接收来自网络设备的第一消息的情况下，基于原有的RLM配置进行RLM，所述第一消息用于指示重配置无线链路监测RLM配置。
第三方面，本申请实施例提供一种用户设备，包括一个或多个处理器、一个或多个存储器、一个或多个收发器，以及一个或多个程序，所述一个或多个程序被存储在所述存储器中，并且被配置由所述一个或多个处理器执行，所述程序包括用于执行如第一方面所述的方法中的步骤的指令。
第四方面，本申请实施例提供一种计算机可读存储介质，其存储用于电子数据交换的计算机程序，其中，所述计算机程序使得计算机执行如第一方面所述的方法所描述的部分或全部步骤的指令。
第五方面，本申请实施例提供一种计算机程序产品，所述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，所述计算机程序可操作来使计算机执行如第一方面所述的方法所描述的部分或全部步骤的指令。该计算机程序产品可以为一个软件安装包。
可见，本申请中，在用户设备监测到失步状态之后，如果用户设备接收到来自网络设备的用于指示重配置RLM配置的第一消息，用户设备不针对该第一消息进行相应的操作，用户设备基于原有的RLM配置进行RLM。这样可避免因重置RLM配置导致RLF发现及声明延后的问题，进而降低了时延。
本申请的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1是本申请实施例提供的一种无线通信系统的架构示意图；
图2是本申请实施例提供的一种用户设备的结构示意图；
图3是本申请实施例提供的一种网络设备的结构示意图；
图4A是本申请实施例提供的一种无线链路监测方法的流程示意图；
图4B是本申请实施例提供的一种现有的无线链路监测方法的示意图；
图4C是本申请实施例提供的一种现有的无线链路恢复的示意图；
图4D是本申请实施例提供的一种现有的无线链路失败的示意图；
图5是本申请实施例提供的另一种用户设备的结构示意图；
图6是本申请实施例提供的另一种用户设备的结构示意图。
具体实施方式
本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释，而非旨在限定本申请。
本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。
图1示出了本申请涉及的无线通信系统。所述无线通信系统不限于长期演进(Long Term Evolution，LTE)系统，还可以是未来演进的第五代移动通信(the 5th Generation，5G)系统、NR系统，机器与机器通信(Machine to Machine，M2M)系统等。如图1所示，无线通信系统100可包括：一个或多个网络设备101和一个或多个用户设备102。其中：
网络设备101可以为基站，基站可以用于与一个或多个用户设备进行通信，也可以用于与一个或多个具有部分用户设备功能的基站进行通信(比如宏基站与微基站，如接入点，之间的通信)。基站可以是时分同步码分多址(Time Division Synchronous Code Division Multiple Access，TD-SCDMA)系统中的基站收发台(Base Transceiver Station，BTS)，也可以是LTE系统中的演进型基站(Evolutional Node B，eNB)，以及5G系统、新空口(NR)系统中的基站。另外，基站也可以为接入点(Access Point，AP)、传输节点(Trans TRP)、中心单元(Central Unit，CU)或其他网络实体，并且可以包括以上网络实体的功能中的一些或所有功能。
用户设备102可以分布在整个无线通信系统100中，可以是静止的，也可以是移动的。在本申请的一些实施例中，终端102可以是移动设备、移动台(mobile station)、移动单元(mobile unit)、M2M终端、无线单元，远程单元、用户代理、移动客户端等等。
具体的，网络设备101可用于在网络设备控制器(未示出)的控制下，通过无线接口103与用户设备102通信。在一些实施例中，所述网络设备控制器可以是核心网的一部分，也可以集成到网络设备101中。网络设备101与网络设备101之间也可以通过回程(blackhaul)接口104(如X2接口)，直接地或者间接地，相互通信。
目前，关于NR的讨论中，在针对无线链路进行监测方面，RLM的相关配置可通过网络设备给用户设备配置的RLM配置信息进行配置。假如用户设备基于网络设备给用户设备原配置的RLM配置信息进行了RLM配置，以及用户设备的物理层基于配置的RLM配置进行了RLM。在用户设备监测到无线链路出现失步状态，但用户设备的RRC层没有接收到物理层上报的失步指示消息的情况下，用户设备接收到来自网络设备的用于指示重配置RLM配置的消息，此时如果用户设备针对该消息重新配置RLM配置，那么用户设备需要重配置RLM参数配置、RLM定时器配置和RLM计数器配置，会导致RLF发现以及RLF声明延后，由于RLF是用户设备所处的信号质量低下的不满足服务需求的场景，这样会增长用户设备的时延。
本申请中，在用户设备监测到失步状态之后，如果用户设备接收到来自网络设备的用于指示重配置RLM配置的第一消息，用户设备不针对该第一消息进行相应的操作，用户 设备基于原有的RLM配置进行RLM。这样可避免因重置RLM配置导致RLF发现及声明延后的问题，进而降低了时延。
需要说明的，图1示出的无线通信系统100仅仅是为了更加清楚的说明本申请的技术方案，并不构成对本申请的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请提供的技术方案对于类似的技术问题，同样适用。
参考图2，图2示出了本申请的一些实施例提供的用户设备200。如图2所示，用户设备200可包括：一个或多个用户设备处理器201、存储器202、通信接口203、接收器205、发射器206、耦合器207、天线208、用户接口202，以及输入输出模块(包括音频输入输出模块210、按键输入模块211以及显示器212等)。这些部件可通过总线204或者其他方式连接，图2以通过总线连接为例。其中：
通信接口203可用于用户设备200与其他通信设备，例如网络设备，进行通信。具体的，所述网络设备可以是图3所示的网络设备300。具体的，通信接口203可以是长期演进(LTE)(4G)通信接口，也可以是5G或者未来新空口的通信接口。不限于无线通信接口，用户设备200还可以配置有有线的通信接口203，例如局域接入网(Local Access Network，LAN)接口。
发射器206可用于对用户设备处理器201输出的信号进行发射处理，例如信号调制。接收器205可用于对天线208接收的移动通信信号进行接收处理，例如信号解调。在本申请的一些实施例中，发射器206和接收器205可看作一个无线调制解调器。在用户设备200中，发射器206和接收器205的数量均可以是一个或者多个。天线208可用于将传输线中的电磁能转换成自由空间中的电磁波，或者将自由空间中的电磁波转换成传输线中的电磁能。耦合器207用于将天线308接收到的移动通信信号分成多路，分配给多个的接收器205。
除了图2所示的发射器206和接收器205，用户设备200还可包括其他通信部件，例如GPS模块、蓝牙(Bluetooth)模块、无线高保真(Wireless Fidelity，Wi-Fi)模块等。不限于上述表述的无线通信信号，用户设备200还可以支持其他无线通信信号，例如卫星信号、短波信号等等。不限于无线通信，用户设备200还可以配置有有线网络接口(如LAN接口)来支持有线通信。
所述输入输出模块可用于实现户设备200和用户/外部环境之间的交互，可主要包括音频输入输出模块210、按键输入模块211以及显示器212等。具体的，所述输入输出模块还可包括：摄像头、触摸屏以及传感器等等。其中，所述输入输出模块均通过用户接口209与用户设备处理器201进行通信。
存储器202与终端处理器201耦合，用于存储各种软件程序和/或多组指令。具体的，存储器202可包括高速随机存取的存储器，并且也可包括非易失性存储器，例如一个或多个磁盘存储设备、闪存设备或其他非易失性固态存储设备。存储器202可以存储操作系统(下述简称系统)，例如ANDROID，IOS，WINDOWS，或者LINUX等嵌入式操作系统。存储器202还可以存储网络通信程序，该网络通信程序可用于与一个或多个附加设备，一个或多个用户设备，一个或多个网络设备进行通信。存储器202还可以存储用户接口程序，该用户接口程序可以通过图形化的操作界面将应用程序的内容形象逼真的显示出来，并通过菜单、对话框以及按键等输入控件接收用户对应用程序的控制操作。
在本申请的一些实施例中，存储器202可用于存储本申请的一个或多个实施例提供的PDCP实体的配置方法在用户设备200侧的实现程序。关于本申请的一个或多个实施例提供的PDCP实体的配置方法的实现，请参考下述方法实施例。
在本申请的一些实施例中，用户设备处理器201可用于读取和执行计算机可读指令。具体的，用户设备处理器201可用于调用存储于存储器212中的程序，例如本申请的一个或多个实施例提供的PDCP实体的配置方法在用户设备200侧的实现程序，并执行该程序包含的指令。
需要说明的，图2所示的用户设备200仅仅是本申请实施例的一种实现方式，实际应用中，用户设备200还可以包括更多或更少的部件，这里不作限制。
参考图3，图3示出了本申请的一些实施例提供的网络设备300。如图3所示，网络设备300可包括：一个或多个网络设备处理器301、存储器302、通信接口303、发射器305、接收器306、耦合器307和天线308。这些部件可通过总线304或者其他式连接，图4以通过总线连接为例。其中：
通信接口303可用于网络设备300与其他通信设备，例如用户设备或其他网络设备，进行通信。具体的，所述用户设备可以是图2所示的用户设备200。具体的，通信接口303可以是长期演进(LTE)(4G)通信接口，也可以是5G或者未来新空口的通信接口。不限于无线通信接口，网络设备300还可以配置有有线的通信接口303来支持有线通信，例如一个网络设备300与其他网络设备300之间的回程链接可以是有线通信连接。
发射器305可用于对网络设备处理器301输出的信号进行发射处理，例如信号调制。接收器306可用于对天线308接收的移动通信信号进行接收处理。例如信号解调。在本申请的一些实施例中，发射器305和接收器306可看作一个无线调制解调器。在网络设备300中，发射器305和接收器306的数量均可以是一个或者多个。天线308可用于将传输线中的电磁能转换成自由空间中的电磁波，或者将自由空间中的电磁波转换成传输线中的电磁能。耦合器307可用于将移动通信号分成多路，分配给多个的接收器306。
存储器302与网络设备处理器301耦合，用于存储各种软件程序和/或多组指令。具体的，存储器302可包括高速随机存取的存储器，并且也可包括非易失性存储器，例如一个或多个磁盘存储设备、闪存设备或其他非易失性固态存储设备。存储器302可以存储操作系统(下述简称系统)，例如uCOS、VxWorks、RTLinux等嵌入式操作系统。存储器402还可以存储网络通信程序，该网络通信程序可用于与一个或多个附加设备，一个或多个终端设备，一个或多个网络设备进行通信。
网络设备处理器301可用于进行无线信道管理、实施呼叫和通信链路的建立和拆除，并为本控制区内的用户提供小区切换控制等。具体的，网络设备处理器301可包括：管理/通信模块(Administration Module/Communicat ion Module，AM/CM)(用于话路交换和信息交换的中心)、基本模块(Basic Module，BM)(用于完成呼叫处理、信令处理、无线资源管理、无线链路的管理和电路维护功能)、码变换及子复用单元(Transcoder and SubMultiplexer，TCSM)(用于完成复用解复用及码变换功能)等等。
在本申请的实施例中，存储器302可用于存储本申请的一个或多个实施例提供的PDCP实体的配置方法在网络设备300侧的实现程序。关于本申请的一个或多个实施例提供的PDCP实体的配置方法的实现，请参考下述方法实施例。
本申请实施例中，网络设备处理器301可用于读取和执行计算机可读指令。具体的，网络设备处理器301可用于调用存储于存储器302中的程序，例如本申请的一个或多个实施例提供的PDCP实体的配置方法在网络设备300侧的实现程序，并执行该程序包含的指令。
需要说明的，图3所示的网络设备300仅仅是本申请实施例的一种实现方式，实际应用中，网络设备300还可以包括更多或更少的部件，这里不作限制。
基于前述无线通信系统100、用户设备200以及网络设备300分别对应的实施例，本申请实施例提供了一种无线链路监测方法。
请参见图4，图4为本申请实施例提供的一种无线链路监测方法的流程示意图，包括以下步骤：
步骤401：在用户设备监测到失步状态之后，所述用户设备接收来自网络设备的第一消息的情况下，所述用户设备基于原有的RLM配置进行RLM，所述第一消息用于指示重 配置无线链路监测RLM配置。
其中，用户设备接收来自网络设备的第一消息可以是用户设备接收网络设备直接向用户设备发送的第一消息，也可以是用户设备接收网络设备通过其他设备给用户设备转发的第一消息，在此不作限定。
在本申请的一实施例中，第一消息包括RLM重配置信令，所述RLM重配置信令指示重配置无线链路监测RLM配置。
在本申请的一实施例中，第一消息可携带在网络设备给用户设备发送的数据中，或者第一消息可携带在网络设备给用户设备发送的下行信令中，或者第一消息可携带在网络设备给用户设备发送的下行消息等等，在此不作限定。
其中，第一消息包括网络设备给用户设备新配置的RLM配置信息。
其中，RLM配置信息包括RLM参数信息，RLM参数信息包括参考信号(Reference Signal，RS)类型信息、RS信息、RS数量信息。
其中，RS包括以下几种类型：同步信号PSS和SSS(Primary Synchronization Signal/Secondary Synchronization Signal)，解调参考信号(Demodulation reference signal，DM-RS)，信道探测参考信号(Sounding Reference Signal，SRS)，公共参考信号(Cell-specific ReferenceSignal，CRS)，多播单频网参考信号(multi broadcast single frequency network reference signal，MBSFN-RS)，移动台特定的参考信号(user equipment-specific reference signal，UE-specificRS)，定位参考信号(Positioning reference signals，PRS)，信道状态信息参考信号(channel spatial information reference signal，CSI-RS)。
在本申请的一实施例中，所述RLM配置包括以下至少一种：RLM参数配置、RLM定时器配置、RLM计数器配置。
在本申请的一实施例中，所述RLM参数配置包括以下至少一种：RS类型配置、RS配置、RS数量配置。
在本申请的一实施例中，所述第一消息包括RLM重配置信令，所述RLM重配置信令用于指示重配置无线链路监测RLM配置，或者所述第一消息包括所述网络设备给所述用户设备发送的下行信令，或者所述第一消息包括所述网络设备给所述用户设备发送的下行消息，等等。
在本申请的一实施例中，所述方法还包括：
在所述用户设备估计的下行链路质量小于或等于第一门限值的情况下，所述用户设备监测到失步状态；在所述用户设备估计的下行链路质量大于或等于第二门限值的情况下，所述用户设备监测到同步状态。
其中，第一门限值可以是门限值Q out，也可以是其他用于判定失步状态的门限值，在此不作限定。门限值Q out定义为用户设备不能对下行无线链路进行可靠接收时下行无线链路质量水平，相当于假定条件下下行控制信道传输的误块率(Block Error Ratio，BLER)为10％。
其中，第二门限值可以是门限值Q in，也可以是其他用于判定同步状态的门限值，在此不作限定。门限值Q in定义为用户设备可以对下行无线链路进行有效可靠接收时下行无线链路质量水平，相当于假定条件下下行控制信道传输的误块率(Block Error Ratio，BLER)为2％。
在本申请的一实施例中，所述方法还包括：
在所述用户设备监测到失步状态的情况下，所述用户设备向所述用户设备的高层发送失步指示消息；在所述用户设备监测到同步状态的情况下，所述用户设备向所述用户设备的高层发送同步指示消息。
其中，用户设备的高层指的是无线资源控制协议(Radio Resource Control，RRC)层。
目前，对于无线链路监测的需求均是针对双天线接收的用户设备。对双天线接收的用 户设备进行无线链路监测方法请参见图4B，在图4B中，用户设备在物理层每隔一段时间△T需要对服务小区的下行链路质量进行一次监测，即用户设备的物理层需要在T 0，T 1，T 2，T n，T n+1，T n+2，…时刻监测服务小区的下行链路质量。用户设备对某个时刻的无线链路质量的评估则是基于时间窗T evaluate内的无线链路质量得到的。例如，用户设备在T n时刻需要对[T 0，T n]时段内的下行链路质量进行评估，获得T n时刻对应的链路质量评估结果；用户设备在T n+1时刻需要对[T n，T n+1]时段内的下行链路质量进行评估，获得T n+1时刻对应的链路质量评估结果。
目前，对应评估时间间隔(图4B中的△T)定义有：
在非连续接收(Discontinuous Reception，DRX)模式下，用户设备物理层需要在每个DRX周期内对下行链路质量进行一次评估，即评估时间间隔△T＝1DRX周期。
在non-DRX模式下，用户设备物理层需要在每个无线帧内对下行链路质量进行一次评估，即评估时间间隔△T＝10ms。
目前，对应评估时间窗的长度(图4B中的T evaluate)定义有：
在DRX模式下，同步或失步评估时间窗取决于DRX周期长度。
在non-DRX模式下，对于失步监测，评估时间窗＝200ms。
在non-DRX模式下，对于同步监测，评估时间窗＝100ms。
在初始时，无线链路链接正常，用户设备物理层需要进行失步监测。当用户设备估计的下行链路质量低于门限值Q out时，用户设备监测到失步状态，用户设备的物理层需要向用户设备的高层层发送失步指示消息。当用户设备高层收到连续N310个失步指示消息后，用户设备需要开启计时器T310，在计时器T310开启期间，当用户设备估计的下行链路质量高于门限值Q in时，用户设备监测到同步状态，用户设备的物理层需要向用户设备的高层层发送同步指示消息。
若在计时器T310超时之前，用户设备收到连续N311个同步指示(如图4C所示)，则说明下行链路恢复正常，用户设备关闭计时器T310。
若果在计时器T310超时之前，用户设备没有收到连续N311个同步指示(如图4D所示)，则发生了无线链路失败(Radio Link Failure，RLF)，用户设备声明RLF，用户设备启动定时器T311，并进行小区搜索和小区选择，在定时器超时前发现合适小区，用户设备向该合适小区发起RRC连接重建过程。
目前，关于NR的讨论中，在针对无线链路进行监测方面，RLM的相关配置可通过网络设备给用户设备配置的RLM配置信息进行配置。假如用户设备基于网络设备给用户设备原配置的RLM配置信息进行了RLM配置，以及用户设备的物理层基于配置的RLM配置进行了RLM。在用户设备监测到无线链路出现失步状态，但用户设备的RRC层没有接收到物理层上报的失步指示消息的情况下，用户设备接收到来自网络设备的用于指示重配置RLM配置的消息，此时如果用户设备针对该消息重新配置RLM配置，那么用户设备需要重配置RLM参数配置、RLM定时器配置和RLM计数器配置，会导致RLF发现以及RLF声明延后，由于RLF是用户设备所处的信号质量低下的不满足服务需求的场景，这样会增长用户设备的时延。
本申请中，在用户设备监测到失步状态之后，如果用户设备接收到来自网络设备的用于指示重配置RLM配置的第一消息，用户设备不针对该第一消息进行相应的操作，用户设备基于原有的RLM配置进行RLM。这样可避免因重置RLM配置导致RLF发现及声明延后的问题，进而降低了时延。
在本申请的一实施例中，用户设备的物理层使用扩展评估时间间隔对服务小区的下行链路质量，该扩展评估时间间隔大于现有定义的评估时间间隔。这样可增大对无线链路进行监测的周期，降低了监测频率，进而能够降低用户设备的功率消耗，节省设备成本。
进一步地，该扩展评估时间间隔可由网络设备给用户设备进行配置，具体可以是网络设备通过RRC消息通知UE。
在本申请的一实施例中，所述方法还包括：
在所述用户设备未监测到失步状态，所述用户设备接收来自网络设备的所述第一消息的情况下，所述用户设备根据所述第一消息重配置RLM配置，以及基于新配置的RLM配置进行RLM。
具体实现中，所述第一消息包括网络设备给用户设备新配置的RLM配置信息。所述用户设备根据所述第一消息重配置RLM配置的具体实现方式有：所述用户设备根据所述第一消息中包括的新配置的RLM配置信息重配置RLM配置。
在本申请中，如果用户设备未监测到失步状态，此时如果用户设备接收到来自网络设备的第一消息，用户设备及时根据第一消息重配置RLM配置，以使得用户设备及时基于新配置的RLM配置进行RLM，提升无线链路监测的准确性。
在本申请的一实施例中，所述用户设备基于原有的RLM配置进行RLM之后，所述方法还包括：
所述用户设备针对所述第一消息向所述网络设备反馈第二消息，所述第二消息用于指示重配置RLM配置失败或者拒绝重配置RLM配置。
在本申请的一实施例中，所述第二消息包括RLM重配置失败信令或RLM重配置拒绝信令，所述RLM重配置失败信令或所述RLM重配置拒绝信令用于指示重配置RLM配置失败或者拒绝重配置RLM配置。
在本申请的一实施例中，第二消息可携带在用户设备给网络设备发送的数据中，或者第一消息可携带在用户设备给网络设备发送的上行信令中，或者第一消息可携带在用户设备给网络设备发送发送的上行消息等等，在此不作限定。
在本申请的一实施例中，所述第二消息包括所述重置RLM配置失败或者所述拒绝重配置RLM配置的原因。
在本申请的一实施例中，所述原因包括所述用户设备已经监测到失步指示消息。
请参见图5，图5是本申请实施例提供的一种用户设备500，该用户设备500包括：一个或多个处理器、一个或多个存储器、一个或多个收发器，以及一个或多个程序；
所述一个或多个程序被存储在所述存储器中，并且被配置由所述一个或多个处理器执行；
所述程序包括用于执行以下步骤的指令：
在用户设备监测到失步状态之后，接收来自网络设备的第一消息，所述第一消息用于指示重配置无线链路监测RLM配置；
基于原有的RLM配置进行RLM。
可见，本申请中，在用户设备监测到失步状态之后，如果用户设备接收到来自网络设备的用于指示重配置RLM配置的第一消息，用户设备不针对该第一消息进行相应的操作，用户设备基于原有的RLM配置进行RLM。这样可避免因重置RLM配置导致RLF发现及声明延后的问题，进而降低了时延。
在本申请的一实施例中，所述程序包括还用于执行以下步骤的指令：
在所述用户设备未监测到失步状态，所述用户设备接收来自网络设备的所述第一消息的情况下，根据所述第一消息重配置RLM配置，以及基于新配置的RLM配置进行RLM。
在本申请的一实施例中，在基于原有的RLM配置进行RLM之后，所述程序包括还用于执行以下步骤的指令：
针对所述第一消息向所述网络设备反馈第二消息，所述第二消息用于指示重配置RLM配置失败或者拒绝重配置RLM配置。
在本申请的一实施例中，所述第二消息包括所述重置RLM配置失败或者所述拒绝重配置RLM配置的原因。
在本申请的一实施例中，所述原因包括所述用户设备已经监测到失步指示消息。
在本申请的一实施例中，所述RLM配置包括以下至少一种：RLM参数配置、RLM定时器配置、RLM计数器配置。
在本申请的一实施例中，所述RLM参数配置包括以下至少一种：参考信号RS类型配置、RS配置、RS数量配置。
在本申请的一实施例中，所述第一消息包括RLM重配置信令。
在本申请的一实施例中，所述第二消息包括RLM重配置失败信令或RLM重配置拒绝信令。
在本申请的一实施例中，所述程序包括还用于执行以下步骤的指令：
在所述用户设备估计的下行链路质量小于或等于第一门限值的情况下，所述用户设备监测到失步状态；
在所述用户设备估计的下行链路质量大于或等于第二门限值的情况下，所述用户设备监测到同步状态。
在本申请的一实施例中，所述程序包括还用于执行以下步骤的指令：
在所述用户设备监测到失步状态的情况下，所述用户设备向所述用户设备的高层发送失步指示消息；
在所述用户设备监测到同步状态的情况下，所述用户设备向所述用户设备的高层发送同步指示消息。
需要说明的是，本实施例所述的内容的具体实现方式可参见上述方法，在此不再叙述。
请参阅图6，图6是本申请实施例提供的一种用户设备600，用户设备600包括处理单元601、通信单元602和存储单元603，所述处理单元601包括接收单元和参数调整单元，其中：
处理单元601，用于在用户设备监测到失步状态之后，通过通信单元602接收来自网络设备的第一消息，所述第一消息用于指示重配置无线链路监测RLM配置；
处理单元601，还用于基于原有的RLM配置进行RLM。
可见，本申请中，在用户设备监测到失步状态之后，如果用户设备接收到来自网络设备的用于指示重配置RLM配置的第一消息，用户设备不针对该第一消息进行相应的操作，用户设备基于原有的RLM配置进行RLM。这样可避免因重置RLM配置导致RLF发现及声明延后的问题，进而降低了时延。
在本申请的一实施例中，处理单元601，还用于在所述用户设备未监测到失步状态，所述用户设备接收来自网络设备的所述第一消息的情况下，根据所述第一消息重配置RLM配置，以及基于新配置的RLM配置进行RLM。
在本申请的一实施例中，在基于原有的RLM配置进行RLM之后，
处理单元601，还用于通过通信单元602针对所述第一消息向所述网络设备反馈第二消息，所述第二消息用于指示重配置RLM配置失败或者拒绝重配置RLM配置。
在本申请的一实施例中，所述第二消息包括所述重置RLM配置失败或者所述拒绝重配置RLM配置的原因。
在本申请的一实施例中，所述原因包括所述用户设备已经监测到失步指示消息。
在本申请的一实施例中，所述RLM配置包括以下至少一种：RLM参数配置、RLM定时器配置、RLM计数器配置。
在本申请的一实施例中，所述RLM参数配置包括以下至少一种：参考信号RS类型配置、RS配置、RS数量配置。
在本申请的一实施例中，所述第一消息包括RLM重配置信令。
在本申请的一实施例中，所述第二消息包括RLM重配置失败信令或RLM重配置拒绝信令。
在本申请的一实施例中，
处理单元601，还用于在所述用户设备估计的下行链路质量小于或等于第一门限值的情况下，监测到失步状态；在所述用户设备估计的下行链路质量大于或等于第二门限值的情况下，监测到同步状态。
在本申请的一实施例中，处理单元601，还用于在所述用户设备监测到失步状态的情况下，通过通信单元602向所述用户设备的高层发送失步指示消息；在所述用户设备监测到同步状态的情况下，通过通信单元602向向所述用户设备的高层发送同步指示消息。
其中，处理单元601可以是处理器或控制器，(例如可以是中央处理器(Central Processing Unit，CPU)，通用处理器，数字信号处理器(Digital Signal Processor，DSP)，专用集成电路(Application-Specific Integrated Circuit，ASIC)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等)。通信单元602可以是收发器、收发电路、射频芯片、通信接口等，存储单元603可以是存储器。
当处理单元601为处理器，通信单元602为通信接口，存储单元603为存储器时，本申请实施例所涉及的用户设备可以为图5所示的用户设备。
本申请实施例还提供了一种计算机可读存储介质，其中，所述计算机可读存储介质存储用于电子数据交换的计算机程序，其中，所述计算机程序使得计算机执行如上述方法实施例中用户设备所描述的部分或全部步骤。
本申请实施例还提供了一种计算机程序产品，其中，所述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，所述计算机程序可操作来使计算机执行如上述方法中用户设备所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包。
本申请实施例所描述的方法或者算法的步骤可以以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read Only Memory，ROM)、可擦除可编程只读存储器(Erasable Programmable ROM，EPROM)、电可擦可编程只读存储器(Electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于接入网设备、目标网络设备或核心网设备中。当然，处理器和存储介质也可以作为分立组件存在于接入网设备、目标网络设备或核心网设备中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请实施例所描述的功能可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网 站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(Digital Video Disc，DVD))、或者半导体介质(例如，固态硬盘(Solid State Disk，SSD))等。
以上所述的具体实施方式，对本申请实施例的目的、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，以上所述仅为本申请实施例的具体实施方式而已，并不用于限定本申请实施例的保护范围，凡在本申请实施例的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请实施例的保护范围之内。

Claims (20)

  1. 一种无线链路监测方法，其特征在于，包括：
    在用户设备监测到失步状态之后，所述用户设备接收来自网络设备的第一消息的情况下，所述用户设备基于原有的RLM配置进行RLM，所述第一消息用于指示重配置无线链路监测RLM配置。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    在所述用户设备未监测到失步状态，所述用户设备接收来自网络设备的所述第一消息的情况下，所述用户设备根据所述第一消息重配置RLM配置，以及基于新配置的RLM配置进行RLM。
  3. 根据权利要求1所述的方法，其特征在于，所述用户设备基于原有的RLM配置进行RLM之后，所述方法还包括：
    所述用户设备针对所述第一消息向所述网络设备反馈第二消息，所述第二消息用于指示重配置RLM配置失败或者拒绝重配置RLM配置。
  4. 根据权利要求3所述的方法，其特征在于，所述第二消息包括所述重置RLM配置失败或者所述拒绝重配置RLM配置的原因。
  5. 根据权利要求4所述的方法，其特征在于，所述原因包括所述用户设备已经监测到失步指示消息。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述RLM配置包括以下至少一种：RLM参数配置、RLM定时器配置、RLM计数器配置。
  7. 根据权利要求6所述的方法，其特征在于，所述RLM参数配置包括以下至少一种：参考信号RS类型配置、RS配置、RS数量配置。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述第一消息包括RLM重配置信令。
  9. 根据权利要求3-8任一项所述的方法，其特征在于，所述第二消息包括RLM重配置失败信令或RLM重配置拒绝信令。
  10. 根据权利要求1-9任一项所述的方法，其特征在于，所述方法还包括：
    在所述用户设备估计的下行链路质量小于或等于第一门限值的情况下，所述用户设备监测到失步状态；
    在所述用户设备估计的下行链路质量大于或等于第二门限值的情况下，所述用户设备监测到同步状态。
  11. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    在所述用户设备监测到失步状态的情况下，所述用户设备向所述用户设备的高层发送失步指示消息；
    在所述用户设备监测到同步状态的情况下，所述用户设备向所述用户设备的高层发送同步指示消息。
  12. 一种用户设备，其特征在于，包括：
    处理单元，用于在所述用户设备监测到失步状态之后，所述用户设备接收来自网络设备的第一消息的情况下，基于原有的RLM配置进行RLM，所述第一消息用于指示重配置无线链路监测RLM配置。
  13. 根据权利要求12所述的用户设备，其特征在于，
    所述处理单元，还用于在所述用户设备未监测到失步状态，所述用户设备接收来自网络设备的所述第一消息的情况下，根据所述第一消息重配置RLM配置，以及基于新配置的RLM配置进行RLM。
  14. 根据权利要求12所述的用户设备，其特征在于，
    所述处理单元，还用于针对所述第一消息向所述网络设备反馈第二消息，所述第二消息用于指示重配置RLM配置失败或者拒绝重配置RLM配置。
  15. 根据权利要求14所述的用户设备，其特征在于，所述第二消息包括所述重置RLM配置失败或者所述拒绝重配置RLM配置的原因。
  16. 根据权利要求15所述的用户设备，其特征在于，所述原因包括所述用户设备已经监测到失步指示消息。
  17. 根据权利要求12-16任一项所述的用户设备，其特征在于，所述第一消息包括RLM重配置信令。
  18. 根据权利要求14-17任一项所述的用户设备，其特征在于，所述第二消息包括RLM重配置失败信令或RLM重配置拒绝信令。
  19. 一种用户设备，其特征在于，包括一个或多个处理器、一个或多个存储器、一个或多个收发器，以及一个或多个程序，所述一个或多个程序被存储在所述存储器中，并且被配置由所述一个或多个处理器执行，所述程序包括用于执行如权利要求1-11任一项所述的方法中的步骤的指令。
  20. 一种计算机可读存储介质，其特征在于，其存储用于电子数据交换的计算机程序，其中，所述计算机程序使得计算机执行如权利要求1-11任一项所述的方法中的步骤的指令。
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