Wireless link monitoring method and device, and terminal equipment

Abstract

An embodiment of the present application provides a wireless link monitoring method and apparatus, and a terminal device, the method comprising: the terminal device determines whether a physical layer of the terminal device reports a synchronization indication or a desynchronization indication based on a comparison result between the quality of a detected reference signal and at least two thresholds among a first threshold, a second threshold, and a third threshold; wherein the first threshold is associated with a first block error rate BLER value, the second threshold is associated with a second BLER value, and the third threshold is associated with a third BLER value; the first BLER value is greater than the second BLER value, and the second BLER value is greater than the third BLER value.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a wireless link monitoring method and apparatus, and terminal equipment. Background Art

[0002] In the unlicensed band, due to the existence of the Listen Before Talk (LBT) mechanism, it cannot be guaranteed that the radio link monitor-reference signal (Radio Link monitor-Reference Signal, RLM-RS) (also referred to as RS) of the base station are all successfully sent, which will lead to the following state on the terminal device side: the terminal device does not detect RS, which is caused by the failure of the base station to perform LBT and not send RS. For the New Radio-Unlicensed (NR-U) system, the current RLM mechanism will be very inefficient or erroneously judge the radio link failure (Radio Link failure, RLF) for the radio link monitoring, which is not fair to the NR-U terminal devices. Summary of the invention

[0003] Embodiments of the present application provide a wireless link monitoring method and apparatus, and terminal equipment.

[0004] The wireless link monitoring method provided in the embodiment of the present application includes:

[0005] The terminal device determines, based on a comparison result between the quality of the detected reference signal and at least two thresholds among the first threshold, the second threshold and the third threshold, whether the physical layer of the terminal device reports a synchronization indication or an out-of-sync indication;

[0006] The first threshold is associated with a first block error rate (BLER) value, the second threshold is associated with a second BLER value, and the third threshold is associated with a third BLER value; the first BLER value is greater than the second BLER value, and the second BLER value is greater than the third BLER value.

[0007] The wireless link monitoring method provided in the embodiment of the present application includes:

[0008] The terminal device performs high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer;

[0009] If the filtering result meets the asynchronous requirement, the terminal device adds 1×Y to the value of the second counter, where Y is a confidence coefficient, and the second counter is used to count asynchronous indications.

[0010] The wireless link monitoring device provided in the embodiment of the present application is applied to a terminal device, and the device includes:

[0011] A detection unit, used for detecting a reference signal;

[0012] A determination unit, configured to determine whether the physical layer of the terminal device reports a synchronization indication or an out-of-sync indication based on a comparison result between the quality of the detected reference signal and at least two thresholds among the first threshold, the second threshold and the third threshold;

[0013] The first threshold is associated with a first BLER value, the second threshold is associated with a second BLER value, and the third threshold is associated with a third BLER value; the first BLER value is greater than the second BLER value, and the second BLER value is greater than the third BLER value.

[0014] The wireless link monitoring device provided in the embodiment of the present application is applied to a terminal device, and the device includes:

[0015] A processing unit is used to perform high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer; if the filtering result meets the asynchronous requirement, the value of the second counter is added by 1×Y, where Y is the confidence coefficient, and the second counter is used to count the asynchronous indication.

[0016] The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned wireless link monitoring method.

[0017] The chip provided in the embodiment of the present application is used to implement the above-mentioned wireless link monitoring method.

[0018] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned wireless link monitoring method.

[0019] The computer-readable storage medium provided in the embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned wireless link monitoring method.

[0020] The computer program product provided in the embodiment of the present application includes computer program instructions, which enable a computer to execute the above-mentioned wireless link monitoring method.

[0021] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned wireless link monitoring method.

[0022] The above-mentioned technical scheme of the embodiment of the present application provides a new wireless link monitoring mechanism, in which the terminal device determines whether the physical layer of the terminal device reports a synchronization indication or a desynchronization indication based on the comparison result between the quality of the detected reference signal and at least two thresholds among the first threshold, the second threshold and the third threshold. Since multiple thresholds are used to determine whether to report a synchronization indication or a desynchronization indication, more wireless link states can be distinguished, which helps to reduce the error judgment rate of RLF and improves the efficiency and accuracy of wireless link monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

[0025] Figure 2 It is a schematic diagram of the process of RLM from the physical layer to the high layer provided in an embodiment of the present application;

[0026] Figure 3 is a schematic diagram of high-level counting provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a wireless link monitoring method according to an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the structure of the wireless link monitoring device provided in the embodiment of the present application Figure 1 ;

[0029] Figure 6 A schematic diagram of the structure of the wireless link monitoring device provided in the embodiment of the present application Figure 2 ;

[0030] Figure 7 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0031] Figure 8 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0032] Fig. 9 It is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, 5G communication system or future communication system, etc.

[0035] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal). The network device 110 may provide communication coverage for a specific geographical area, and may communicate with terminals located within the coverage area. Optionally, the network device 110 may be an evolved base station (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future communication system, etc.

[0036] The communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110. As used herein, "terminal" includes but is not limited to connecting via a wired line, such as via a Public Switched Telephone Networks (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection; and / or another data connection / network; and / or via a wireless interface, such as, for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and / or another terminal configured to receive / send communication signals; and / or an Internet of Things (IoT) device. A terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A terminal may refer to an access terminal, User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

[0037] Optionally, the terminals 120 may perform device-to-device (D2D) communication.

[0038] Optionally, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0039] Figure 1 One network device and two terminals are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminals within its coverage area, which is not limited in the embodiments of the present application.

[0040] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0041] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal 120 with communication functions. The network device 110 and the terminal 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0042] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0043] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions related to the embodiments of the present application are described below.

[0044] ●Definition and related parameters of RLM

[0045] Definition: Monitor and evaluate the channel quality of the downlink of the serving cell. RLM measurement is used to generate Insync (IS) indication and Out of sync (OOS) indication.

[0046] Applicable scenarios: PCell in SA NR mode, NR-DC mode or NE-DC mode; PSCell in NR-DC mode or EN-DC mode.

[0047] RLM-RS: Synchronization Signal and PBCH Block (SSB) or Channel State Information-Reference Signal (CSI-RS) can be used as a reference signal for RLM measurement.

[0048] Measurement time: in TSSB (no need to configure measurement interval).

[0049] For FR1: T SSB If it does not overlap with the measurement gap repetition period (MGRP), there is no need to scale the measurement time; otherwise, the measurement time is lengthened according to the following scaling factor: P = 1 / (1-T SSB / MGRP);

[0050] For FR2: Due to T SSB There may be overlap with MGRP, requiring longer measurement time.

[0051] Q in / Q out Threshold: Q in is the threshold corresponding to IS, Q out is the threshold corresponding to OOS. in Threshold and Q out The threshold has a corresponding relationship with BLER, where Q in Threshold and BLER in There is a corresponding relationship, Q ou t Threshold and BLER out There is a corresponding relationship. In an optional manner, BLER in and BLER out The configuration is shown in Table 1 below:

[0052] Configuration <![CDATA[BLER out ]]> <![CDATA[BLER in ]]> 0 10％ 2％

[0053] Table 1

[0054] For each RLM-RS resource, the terminal device measures the downlink radio link quality of the RLM-RS resource (i.e., measures the quality of the reference signal on the RLM-RS resource), and compares the downlink radio link quality (i.e., the quality of the reference signal) with Q in Threshold and Q ou The quality of the downlink wireless link of the cell is determined based on the comparison result.

[0055] Q outDefinition of threshold: A threshold at which the downlink wireless link signal cannot be received normally. This threshold is related to BLER. out For SSB-based wireless link monitoring, Q out_SSB Based on an assumption, PDCCH transmission parameters are derived. For CSI-RS-based radio link monitoring, Q out_CSI-RS PDCCH transmission parameters are derived based on another assumption.

[0056] Q in Definition of threshold: A threshold at which the downlink radio link signal can be clearly received normally. This threshold is related to BLER. in For SSB-based wireless link monitoring, Q in_SSB Based on an assumption, PDCCH transmission parameters are derived. For CSI-RS-based radio link monitoring, Q in_CSI-RS PDCCH transmission parameters are derived based on another assumption.

[0057] ●RLM physical layer process

[0058] If the signal quality of RS is lower than Q out , the terminal device needs to send an asynchronous indication of Layer 1 (Layer 1, L1) to the upper layer (ie, Layer 3 (Layer 3L3)), and the upper layer performs high-level filtering (ie, L3 filtering) on ​​all indications within the evaluation period.

[0059] If the signal quality of RS is higher than Q in , the terminal device needs to send an L1 synchronization indication to the upper layer (i.e., L3), and the upper layer performs high-layer filtering (i.e., L3 filtering) on ​​all indications within the Evaluation period.

[0060] It should be noted that two consecutive L1 indications are separated by at least T Indication_interval ,in,

[0061] T Indication_interval =max(10ms,T RLM-RS,M );or,

[0062] T Indication_interval =max(10ms,1.5*DRX_cycle_length,1.5*T RLM-RS,M ).

[0063] It should be noted that the L3 filtering method is generally a forward convolution averaging method at a high level, and the L3 filtering method may be configured based on Radio Resource Control (RRC) signaling or implemented based on a network.

[0064] The whole process of RLM from physical layer to high layer can be referred to Figure 2 As shown, first the reference signal level is used to evaluate Q in / Q out , followed by cell-level assessment of synchronization / desynchronization, then cell-level assessment of RLF, and finally determination of whether RLF is triggered.

[0065] ●RLM high-level process

[0066] The basic procedures for RLM and RLF in LTE and NR are:

[0067] 1. The network side pre-configures the threshold for IS and OOS for the terminal device, where the threshold is given in the form of BLER, such as BLER in (corresponding to IS's Q in Threshold) and BLER out (Corresponding to OOS Q out Threshold);

[0068] 2. The network side pre-configures the measurement resources for RLM (i.e., RLM-RS resources) for the terminal device. The terminal device determines the current channel quality status (i.e., downlink radio link quality) by measuring RS on the given measurement resources;

[0069] 3. When the terminal device detects that the quality of all RS is less than Q out When the threshold is reached, the physical layer of the terminal equipment reports L1 OOS indication to the upper layer;

[0070] 4. When the terminal device detects that at least one RS has a quality greater than Q in When the threshold is reached, the physical layer of the terminal device reports L1 synchronization indication (L1 IS indication) to the upper layer;

[0071] 5. When the upper layer of the terminal device detects several consecutive L1 OOS indication reports, it starts a timer and detects whether there are several consecutive L1 IS indication reports during the timer running period. If so, the timer is stopped. If not, it is considered that an RLF event has occurred, and the RLF is reported, and subsequent processes are triggered, such as the RRC connection re-establishment process.

[0072] Specifically, refer to Figure 3If the value of the OOS counter reaches a certain value (i.e., N311), start timer T310 and reset the IS counter to 0. Each time an L1 IS indication report is detected, the IS counter increases by 1. During the operation of timer T310, check whether the value of the IS counter continuously increases to a certain value (i.e., N310); if so, stop timer T310; if not, report RLF after timer T310 times out.

[0073] The following Table 2 and Table 3 give the relevant information of each timer and counter.

[0074]

[0075] Table 2

[0076]

[0077] Table 3

[0078] The above RLM mechanism is effective in LTE and NR, but in unlicensed frequency bands, due to the existence of the LBT mechanism, it cannot be guaranteed that the RLM-RS (also referred to as RS) of the base station are all successfully sent, which will lead to three states on the terminal device side: one is that the RS is measured and the RS quality is good, one is that the RS is measured and the RS quality is poor, and the other is that the RS is not measured (the base station does not send RS due to LBT failure). For the third state, if it exists for a long time, it actually reflects that the channel is occupied for a long time and cannot be used by the base station. At this time, no matter whether the actual channel quality is good or bad, the terminal device cannot be served by the channel of the base station.

[0079] In other words, the current RLM mechanism cannot effectively resolve the confusion between poor channel quality and LBT failure. For the NR-U system, the current RLM mechanism will inefficiently or incorrectly judge RLF for radio link monitoring, which is not fair to NR-U terminal devices.

[0080] In view of the above problems, it is necessary to further study the relevant mechanisms of RLM and RLF detection under the characteristic constraints of unlicensed frequency bands. To this end, the following technical solutions of the embodiments of the present application are proposed. The technical solutions of the embodiments of the present application introduce a new mechanism (metric), and on this basis, design relevant detection and judgment processes to improve the effective distinction between poor channel quality and LBT failure.

[0081] Figure 4 A flow chart of a wireless link monitoring method provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the wireless link monitoring method comprises the following steps:

[0082] Step 401: The terminal device determines whether the physical layer of the terminal device reports a synchronization indication or an out-of-sync indication based on a comparison result between the quality of the detected reference signal and at least two thresholds among a first threshold, a second threshold and a third threshold; wherein the first threshold is associated with a first BLER value, the second threshold is associated with a second BLER value, and the third threshold is associated with a third BLER value; and the first BLER value is greater than the second BLER value, and the second BLER value is greater than the third BLER value.

[0083] In an embodiment of the present application, the terminal device may be but is not limited to an NR-U terminal device.

[0084] In an embodiment of the present application, the terminal device measures the quality of the reference signal on the measurement resource of the RLM (i.e., the RLM-RS resource). Here, the quality of the reference signal may be the reference signal received power (RSRP) of the reference signal or the reference signal received quality (RSRQ) of the reference signal or the signal to interference noise ratio (SINR) of the reference signal. In an optional manner, the measurement resource of the RLM is configured by the network side.

[0085] In the embodiment of the present application, the first threshold may also be referred to as Q new threshold, the second threshold can also be called Q out threshold, the third threshold can also be called Q in Here, the first threshold, the second threshold and the third threshold have an associated relationship (or a corresponding relationship) with the BLER value, wherein the first threshold is associated with the first BLER value, the second threshold is associated with the second BLER value, and the third threshold is associated with the third BLER value. The first BLER value may also be referred to as BLER new The second BLER value can also be called BLER out , the third BLER value can also be called BLER in .

[0086] In the embodiment of the present application, the first BLER value is greater than the second BLER value, and the second BLER value is greater than the third BLER value. It should be noted that the larger the BLER value, the smaller the threshold associated with the BLER value. Based on this, the third threshold is greater than the second threshold, and the second threshold is greater than the first threshold.

[0087] In an optional manner of the present application, the first BLER value is network configured or pre-configured.

[0088] In an optional manner of the present application, the second BLER value is network configured or pre-configured.

[0089] In an optional manner of the present application, the third BLER value is configured by the network or pre-configured.

[0090] For example: the first BLER value and the second BLER value are pre-configured, and the third BLER value is configured by the network.

[0091] For example, the first BLER value, the second BLER value, and the third BLER value are all preconfigured.

[0092] For example: the first BLER value, the second BLER value and the third BLER value are all configured by the network.

[0093] In an example, the relevant configuration of BLER is shown in Table 4 below:

[0094] Configuration <![CDATA[BLER in ]]> <![CDATA[BLER out ]]> <![CDATA[BLER new ]]> 0 2％ 10％ 20％

[0095] Table 4

[0096] It should be noted that, in an optional manner, BLER in and BLER out The value of is consistent with the current value, and the newly added BLER new The value of BLER out In another alternative, BLER in The value of is consistent with the current value, BLER out The value is smaller than the current value, and the newly added BLER new The value of BLER out big.

[0097] The technical solution of the embodiment of the present application introduces a new mechanism - BLER new , the BLER new Associated Q new The threshold corresponds to the physical layer judgment threshold of the terminal device. newThe threshold is used to determine the instance of unsuccessful reference signal detection, so as to deal with the problem of RLF false alarm triggered by LBT failure. Using the new mechanism, the terminal device can distinguish the following three wireless link states: the state where the RS on the channel is detected and the channel quality is good (corresponding to the synchronization state), the state where the RS on the channel is detected and the channel quality is poor (corresponding to the out-of-sync state), and the state where the RS on the channel is not detected and the channel quality is poor (corresponding to the new state). Here, the new state is a state caused by the base station LBT failure and the failure to send RS.

[0098] It should be noted that the physical layer of the terminal device is the L1 of the terminal device, and the high layer of the terminal device is the L3 of the terminal device.

[0099] In the technical solution of the embodiment of the present application, the terminal device determines whether the physical layer of the terminal device reports a synchronization indication or an out-of-sync indication based on the comparison result between the quality of the detected reference signal and at least two thresholds among the first threshold, the second threshold and the third threshold. How to determine whether to report a synchronization indication or an out-of-sync indication is described below.

[0100] ●Scheme 1-1

[0101] If the terminal device detects that the quality of the reference signal is less than or equal to the second threshold, the physical layer of the terminal device reports an out-of-sync indication; if the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, the physical layer of the terminal device reports a synchronization indication.

[0102] In an alternative approach, a new mechanism (ie, BLER new ), regardless of whether the terminal device supports this mechanism, it still follows BLER in and BLER out To perform physical layer processes.

[0103] In another alternative, a new mechanism (ie, BLER new ) and introduces a new UE capability, which is used to indicate that the terminal device supports the new mechanism. For terminal devices that do not support the mechanism and / or the capability, the BLER in and BLER out To perform physical layer processes.

[0104] In the above scheme, the terminal equipment is based on BLER in and BLER out To perform the physical layer process, including: If the quality of the reference signal detected by the terminal device is less than or equal to Q outthreshold, the physical layer of the terminal device reports an out-of-sync indication (i.e., L1 OOSindication); if the quality of the reference signal detected by the terminal device is greater than or equal to Q in If the physical layer of the terminal device exceeds the synchronization threshold, it reports a synchronization indication (i.e., L1 OOS indication).

[0105] ●Scheme 1-2

[0106] If the terminal device detects that the quality of the reference signal is less than or equal to the first threshold, the physical layer of the terminal device reports an out-of-sync indication; if the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, the physical layer of the terminal device reports a synchronization indication.

[0107] In an alternative approach, a new mechanism (ie, BLER new ) after the introduction of the new UE capability (UEcapability), the new UE capability is used to indicate that the terminal device supports the new mechanism.

[0108] For terminal devices that support this mechanism and / or this capability, the BLER in and BLER new Execute the physical layer process. It should be noted that the difference from solution 1-1 is that BLER new Replaced BLER out .

[0109] In the above scheme, the terminal equipment is based on BLER in and BLER new Execute the physical layer process, including: if the quality of the reference signal detected by the terminal device is less than or equal to Q new If the quality of the reference signal detected by the terminal device is greater than or equal to Q in If the physical layer of the terminal device exceeds the synchronization threshold, it reports a synchronization indication (i.e., L1 OOS indication).

[0110] ●Scheme 1-3

[0111] If the terminal device detects that the quality of the reference signal is greater than or equal to the first threshold and less than or equal to the second threshold, then the physical layer of the terminal device reports an out-of-sync indication; if the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, then the physical layer of the terminal device reports a synchronization indication.

[0112] In an alternative approach, a new mechanism (ie, BLER new) after the introduction of the new UE capability (UEcapability), the new UE capability is used to indicate that the terminal device supports the new mechanism.

[0113] For terminal devices that support this mechanism and / or this capability, the BLER in ,BLER out and BLER new Execute to perform physical layer processes.

[0114] In the above scheme, the terminal equipment is based on BLER in ,BLER out and BLER new Execute to execute the physical layer process, including: if the quality of the reference signal detected by the terminal device is greater than or equal to Q new Threshold and less than or equal to Q out Threshold (i.e. the quality of the reference signal is between Q new Threshold and Q out If the quality of the reference signal detected by the terminal device is greater than or equal to Q in If the physical layer of the terminal device exceeds the synchronization threshold, it reports a synchronization indication (i.e., L1 OOS indication).

[0115] ●Scheme 1-4

[0116] If the terminal device detects for N consecutive times that the quality of the reference signal is greater than or equal to the first threshold and less than or equal to the second threshold, then the physical layer of the terminal device reports an out-of-sync indication, where N is an integer greater than or equal to 2; if the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, then the physical layer of the terminal device reports a synchronization indication.

[0117] Here, the difference between scheme 1-4 and scheme 1-3 is that the terminal device needs to detect that the quality of the reference signal is greater than or equal to the first threshold and less than or equal to the second threshold for N consecutive times before reporting an out-of-sync indication. new Threshold and less than or equal to Q out Threshold (i.e. the quality of the reference signal is between Q new Threshold and Q out On the other hand, if the quality of the reference signal detected by the terminal device is greater than or equal to Q in If the physical layer of the terminal device exceeds the synchronization threshold, it reports a synchronization indication (i.e., L1 OOS indication).

[0118] ●Scheme 1-5

[0119] If the terminal device detects that the quality of the reference signal is greater than or equal to the second threshold and less than or equal to the third threshold, then the physical layer of the terminal device reports an out-of-sync indication; if the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, then the physical layer of the terminal device reports a synchronization indication.

[0120] In an alternative approach, a new mechanism (ie, BLER new ) after the introduction of the new UE capability (UEcapability), the new UE capability is used to indicate that the terminal device supports the new mechanism.

[0121] For terminal devices that support this mechanism and / or this capability, the BLER in ,BLER out and BLER new Execute to perform physical layer processes.

[0122] In the above scheme, the terminal equipment is based on BLER in ,BLER out and BLER new Execute to execute the physical layer process, including: if the quality of the reference signal detected by the terminal device is greater than or equal to Q out Threshold and less than or equal to Q in Threshold (i.e. the quality of the reference signal is between Q out Threshold and Q in If the quality of the reference signal detected by the terminal device is greater than or equal to Q in If the physical layer of the terminal device exceeds the synchronization threshold, it reports a synchronization indication (i.e., L1 OOS indication).

[0123] ●Schemes 1-6

[0124] If the terminal device detects for M consecutive times that the quality of the reference signal is greater than or equal to the second threshold and less than or equal to the third threshold, then the physical layer of the terminal device reports an out-of-sync indication, where M is an integer greater than or equal to 2; if the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, then the physical layer of the terminal device reports a synchronization indication.

[0125] Here, the difference between solution 1-6 and solution 1-5 is that the terminal device needs to detect that the quality of the reference signal is greater than or equal to the second threshold and less than or equal to the third threshold for M consecutive times before reporting an out-of-sync indication.out Threshold and less than or equal to Q in Threshold (i.e. the quality of the reference signal is between Q out Threshold and Q in On the other hand, if the quality of the reference signal detected by the terminal device is greater than or equal to Q in If the physical layer of the terminal device exceeds the synchronization threshold, it reports a synchronization indication (i.e., L1 OOS indication).

[0126] The above technical solution of the embodiment of the present application can distinguish more wireless link states based on a new mechanism, which helps to reduce false alarms in RLF.

[0127] The above-mentioned schemes 1-1 to 1-6 of the embodiments of the present application refer to schemes related to the physical layer, and the schemes related to the high layer are introduced below.

[0128] ●Scheme 2-1

[0129] The terminal device performs high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer; if the filtering result meets the synchronization requirement, the terminal device adds 1 to the value of the first counter, wherein the first counter is used to count the synchronization indication; if the filtering result meets the asynchronous requirement, the terminal device adds 1 to the value of the second counter, wherein the second counter is used to count the asynchronous indication.

[0130] Here, the first counter may also be referred to as an IS counter, and the second counter may also be referred to as an OOS counter.

[0131] Here, the high layer refers to L3, and accordingly, the high layer filtering refers to L3 filtering. In an optional manner, the filtering method of L3 is configured by the high layer. Specifically, the high layer of the terminal device filters the indications within the filtering time window as follows: if there is at least one synchronization indication within the filtering time window, it is determined that the filtering result meets the synchronization requirement; if all the indications within the filtering time window are out-of-sync indications, it is determined that the filtering result meets the asynchronous requirement.

[0132] ●Scheme 2-2

[0133] The terminal device performs high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer; if the filtering result meets the synchronization requirement, the terminal device adds 1 to the value of the first counter, wherein the first counter is used to count the synchronization indication; if the filtering result meets the asynchronous requirement, the terminal device adds 1×Y to the value of the second counter, wherein Y is a confidence coefficient, wherein the second counter is used to count the asynchronous indication.

[0134] Here, the first counter may also be referred to as an IS counter, and the second counter may also be referred to as an OOS counter.

[0135] Here, the high layer refers to L3, and accordingly, the high layer filtering refers to L3 filtering. In an optional manner, the filtering method of L3 is configured by the high layer. Specifically, the high layer of the terminal device filters the indications within the filtering time window as follows: if there is at least one synchronization indication within the filtering time window, it is determined that the filtering result meets the synchronization requirement; if all the indications within the filtering time window are out-of-sync indications, it is determined that the filtering result meets the asynchronous requirement.

[0136] In an optional manner, the value of Y is preset, for example, the value of Y is 50%, or 60%, or 100%.

[0137] In another optional manner, the value of Y is configured by the network. For example, the value of Y supports the following configurations {10%, 20%, 100%}, and the network can configure the value of Y to be 10%, 20%, or 100%.

[0138] In another optional manner, the value of Y is determined by the terminal device. Further, optionally, the value of Y is determined based on the result of the channel measurement by the terminal device. For example, when the terminal device fails to receive some periodic signals continuously or fails to perform LBT continuously, the terminal device indicates a smaller confidence coefficient, and vice versa. In addition, the value of Y can also be determined based on the implementation of the terminal device itself.

[0139] It should be noted that the above high-level related solutions can be implemented separately or in any combination with the above physical layer related solutions. For example: any one of the solutions from solution 1-1 to solution 1-6 is implemented in combination with solution 2-2. Another example: any one of the solutions from solution 1-2 to solution 1-6 is implemented in combination with solution 2-1. The technical solutions of the embodiments of the present application are illustrated below with reference to several specific examples.

[0140] Example 1

[0141] If the terminal device detects that the quality of the reference signal is between Q out Threshold and Q new If the transmission rate is between the thresholds, the physical layer reports an L1 OOS indication. The higher layer performs high-layer filtering on the synchronization indication and / or asynchronous indication reported by the physical layer. If the filtering result meets the asynchronous requirement, the higher layer adds 1×Y to the value of the OOS counter.

[0142] If the terminal device detects that the quality of the reference signal is less than or equal to Q new threshold, the physical layer reports L1 OOSindication; the high layer performs high-layer filtering on the synchronization indication and / or asynchronous indication reported by the physical layer, and if the filtering result meets the asynchronous requirement, the high layer adds 1 to the value of the OOS counter.

[0143] If the terminal device detects that the quality of the reference signal is greater than or equal to Q in threshold, the physical layer reports L1 ISindication; the high layer performs high-layer filtering on the synchronization indication and / or asynchronous indication reported by the physical layer, and if the filtering result meets the synchronization requirement, the high layer adds 1 to the value of IS counter.

[0144] If the terminal device detects that the quality of the reference signal is between Q out Threshold and Q in If the quality of the reference signal is between Q out Threshold and Q in If the transmission rate is between the thresholds, the physical layer reports an L1 OOS indication. The higher layer performs high-layer filtering on the synchronization indication and / or asynchronous indication reported by the physical layer. If the filtering result meets the asynchronous requirement, the higher layer adds 1×Y to the value of the OOS counter.

[0145] Example 2

[0146] If the terminal device detects the quality of the reference signal between Q out Threshold and Q new If the transmission rate is between the thresholds, the physical layer reports an L1 OOS indication. The higher layer performs high-layer filtering on the synchronization indication and / or asynchronous indication reported by the physical layer. If the filtering result meets the asynchronous requirement, the higher layer adds 1×Y to the value of the OOS counter.

[0147] If the terminal device detects that the quality of the reference signal is less than or equal to Q new threshold, the physical layer reports L1 OOSindication; the high layer performs high-layer filtering on the synchronization indication and / or asynchronous indication reported by the physical layer, and if the filtering result meets the asynchronous requirement, the high layer adds 1 to the value of the OOS counter.

[0148] If the terminal device detects that the quality of the reference signal is greater than or equal to Q inthreshold, the physical layer reports L1 ISindication; the high layer performs high-layer filtering on the synchronization indication and / or asynchronous indication reported by the physical layer, and if the filtering result meets the synchronization requirement, the high layer adds 1 to the value of IS counter.

[0149] If the terminal device detects that the quality of the reference signal is between Q out Threshold and Q in If the quality of the reference signal is between Q out Threshold and Q in If the transmission rate is between the thresholds, the physical layer reports an L1 OOS indication. The higher layer performs high-layer filtering on the synchronization indication and / or asynchronous indication reported by the physical layer. If the filtering result meets the asynchronous requirement, the higher layer adds 1×Y to the value of the OOS counter.

[0150] The technical solution of the embodiment of the present application provides a wireless link monitoring method in an NR-U scenario, which introduces a new mechanism and designs relevant detection and judgment processes on this basis to solve the confusion and misjudgment of RLF (i.e., out-of-sync) and LBT failure caused by the LBT mechanism in the NR-U system, improves the effective distinction between poor channel quality and LBT failure, and thus more accurately determines RLF.

[0151] It should be noted that the technical solution of the embodiment of the present application can be applied to layer 3 mobility measurement (L3 mobility measurement), by introducing a confidence coefficient to determine whether each measurement is valid (that is, to determine whether the poor measurement result is caused by LBT failure or by poor reference signal quality).

[0152] Figure 5 A schematic diagram of the structure of the wireless link monitoring device provided in the embodiment of the present application Figure 1 , applied to terminal devices, such as Figure 5 As shown, the wireless link monitoring device includes:

[0153] A detection unit 501, configured to detect a reference signal;

[0154] A determination unit 502, configured to determine whether a physical layer of the terminal device reports a synchronization indication or an out-of-sync indication based on a comparison result between the quality of the detected reference signal and at least two thresholds of a first threshold, a second threshold, and a third threshold;

[0155] The first threshold is associated with a first BLER value, the second threshold is associated with a second BLER value, and the third threshold is associated with a third BLER value; the first BLER value is greater than the second BLER value, and the second BLER value is greater than the third BLER value.

[0156] In an optional manner, the first BLER value is network configured or pre-configured.

[0157] In an optional manner, the second BLER value is network configured or pre-configured.

[0158] In an optional manner, the third BLER value is configured by the network or pre-configured.

[0159] In an optional manner, the determination unit 502 is used to determine the physical layer reporting out-of-sync indication of the terminal device if the quality of the detected reference signal is less than or equal to the second threshold; and to determine the physical layer reporting synchronization indication of the terminal device if the quality of the detected reference signal is greater than or equal to the third threshold.

[0160] In an optional manner, the determination unit 502 is used to determine the physical layer reporting out-of-sync indication of the terminal device if the quality of the detected reference signal is less than or equal to the first threshold; and to determine the physical layer reporting synchronization indication of the terminal device if the quality of the detected reference signal is greater than or equal to the third threshold.

[0161] In an optional manner, the determination unit 502 is used to determine the physical layer reporting out-of-sync indication of the terminal device if the quality of the detected reference signal is greater than or equal to the first threshold and less than or equal to the second threshold; and to determine the physical layer reporting synchronization indication of the terminal device if the quality of the detected reference signal is greater than or equal to the third threshold.

[0162] In an optional manner, the determination unit 502 is used to determine the physical layer reporting out-of-sync indication of the terminal device if the quality of the reference signal is detected to be greater than or equal to the first threshold and less than or equal to the second threshold for N consecutive times, where N is an integer greater than or equal to 2; if the quality of the reference signal is detected to be greater than or equal to the third threshold, then determine the physical layer reporting synchronization indication of the terminal device.

[0163] In an optional manner, the determination unit 502 is used to determine the physical layer reporting out-of-sync indication of the terminal device if the quality of the detected reference signal is greater than or equal to the second threshold and less than or equal to the third threshold; if the quality of the detected reference signal is greater than or equal to the third threshold, determine the physical layer reporting synchronization indication of the terminal device.

[0164] In an optional manner, the determination unit 502 is used to determine the physical layer reporting out-of-sync indication of the terminal device if the quality of the reference signal is detected to be greater than or equal to the second threshold and less than or equal to the third threshold for M consecutive times, where M is an integer greater than or equal to 2; if the quality of the reference signal is detected to be greater than or equal to the third threshold, then determine the physical layer reporting synchronization indication of the terminal device.

[0165] In an optional manner, the method further includes:

[0166] The processing unit 503 is used to perform high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer; if the filtering result meets the synchronization requirement, the value of the first counter is increased by 1, wherein the first counter is used to count the synchronization indication; if the filtering result meets the asynchronous requirement, the value of the second counter is increased by 1, wherein the second counter is used to count the asynchronous indication.

[0167] In an optional manner, the method further includes:

[0168] The processing unit 503 is used to perform high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer; if the filtering result meets the synchronization requirement, the value of the first counter is increased by 1, wherein the first counter is used to count the synchronization indication; if the filtering result meets the asynchronous requirement, the value of the second counter is increased by 1×Y, wherein Y is the confidence coefficient, wherein the second counter is used to count the asynchronous indication.

[0169] In an optional manner, the value of Y is preset; or,

[0170] The value of Y is configured by the network; or,

[0171] The value of Y is determined by the terminal device.

[0172] In an optional manner, when the value of Y is determined by the terminal device,

[0173] The value of Y is determined based on the result of the channel measurement by the terminal device.

[0174] In an optional manner, the processing unit 503 is used to filter the indications within the filtering time window through the high layer of the terminal device as follows: if there is at least one synchronization indication within the filtering time window, it is determined that the filtering result meets the synchronization requirement; if all the indications within the filtering time window are out-of-sync indications, it is determined that the filtering result meets the asynchronous requirement.

[0175] Those skilled in the art should understand that the relevant description of the above-mentioned wireless link monitoring device in the embodiment of the present application can be understood with reference to the relevant description of the wireless link monitoring method in the embodiment of the present application.

[0176] Figure 6 A schematic diagram of the structure of the wireless link monitoring device provided in the embodiment of the present application Figure 2 , applied to terminal devices, such as Figure 6 As shown, the wireless link monitoring device includes:

[0177] Processing unit 601 is used to perform high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer; if the filtering result meets the asynchronous requirement, the value of the second counter is added by 1×Y, where Y is the confidence coefficient, and the second counter is used to count the asynchronous indication.

[0178] In an optional manner, the processing unit 601 is further configured to add 1 to the value of a first counter if the filtering result meets the synchronization requirement, wherein the first counter is configured to count synchronization indications.

[0179] In an optional manner, the value of Y is preset; or,

[0180] The value of Y is configured by the network; or,

[0181] The value of Y is determined by the terminal device.

[0182] In an optional manner, when the value of Y is determined by the terminal device,

[0183] The value of Y is determined based on the result of the channel measurement by the terminal device.

[0184] In an optional manner, the processing unit 601 is used to filter the indications within the filtering time window through the high layer of the terminal device as follows: if there is at least one synchronization indication within the filtering time window, it is determined that the filtering result meets the synchronization requirement; if all the indications within the filtering time window are out-of-sync indications, it is determined that the filtering result meets the asynchronous requirement.

[0185] Those skilled in the art should understand that the relevant description of the above-mentioned wireless link monitoring device in the embodiment of the present application can be understood with reference to the relevant description of the wireless link monitoring method in the embodiment of the present application.

[0186] Figure 7 700 is a schematic structural diagram of a communication device 700 provided in an embodiment of the present application. The communication device may be a terminal device or a network device. Figure 7The communication device 700 shown includes a processor 710, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0187] Alternatively, if Figure 7 As shown, the communication device 700 may further include a memory 720. The processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0188] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0189] Alternatively, if Figure 7 As shown, the communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0190] The transceiver 730 may include a transmitter and a receiver. The transceiver 730 may further include an antenna, and the number of the antennas may be one or more.

[0191] Optionally, the communication device 700 may specifically be a network device of an embodiment of the present application, and the communication device 700 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0192] Optionally, the communication device 700 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 700 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0193] Figure 8 It is a schematic structural diagram of the chip of an embodiment of the present application. Figure 8 The chip 800 shown includes a processor 810, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0194] Alternatively, if Figure 8 As shown, the chip 800 may further include a memory 820. The processor 810 may call and run a computer program from the memory 820 to implement the method in the embodiment of the present application.

[0195] The memory 820 may be a separate device independent of the processor 810 , or may be integrated into the processor 810 .

[0196] Optionally, the chip 800 may further include an input interface 830. The processor 810 may control the input interface 830 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0197] Optionally, the chip 800 may further include an output interface 840. The processor 810 may control the output interface 840 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0198] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0199] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0200] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0201] Fig. 9 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. Fig. 9 As shown, the communication system 900 includes a terminal device 910 and a network device 920 .

[0202] Among them, the terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0203] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0204] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0205] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0206] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0207] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0208] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0209] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0210] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0211] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0212] The embodiment of the present application also provides a computer program.

[0213] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0214] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0215] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0216] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0217] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0218] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0219] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0220] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0221] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless link monitoring method, the method comprising: The terminal device determines, based on a comparison result between the quality of the detected reference signal and at least two thresholds among the first threshold, the second threshold and the third threshold, whether the physical layer of the terminal device reports a synchronization indication or an out-of-sync indication; The first threshold is associated with a first block error rate BLER value, the second threshold is associated with a second BLER value, and the third threshold is associated with a third BLER value; the first BLER value is greater than the second BLER value, and the second BLER value is greater than the third BLER value; The method further comprises: The terminal device performs high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer; If the filtering result meets the synchronization requirement, the terminal device adds 1 to the value of the first counter, wherein the first counter is used to count the synchronization indications; If the filtering result meets the asynchronous requirement, the terminal device adds 1×Y to the value of the second counter, where Y is a confidence coefficient, and the second counter is used to count asynchronous indications; Among them, when the value of Y is determined by the terminal device, the value of Y is determined based on the result of the channel measurement by the terminal device.

2. The method according to claim 1, wherein: The first BLER value is configured by the network or preconfigured.

3. The method according to claim 1 or 2, wherein: The second BLER value is configured by the network or preconfigured.

4. The method according to any one of claims 1 to 3, wherein: The third BLER value is configured by the network or preconfigured.

5. The method according to any one of claims 1 to 4, wherein: The terminal device determines, based on a comparison result between the quality of the detected reference signal and at least two thresholds among a first threshold, a second threshold, and a third threshold, whether a physical layer of the terminal device reports a synchronization indication or an out-of-sync indication, including: If the terminal device detects that the quality of the reference signal is less than or equal to the second threshold, determining that the physical layer of the terminal device reports an out-of-sync indication; If the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, it determines that the physical layer of the terminal device reports a synchronization indication.

6. The method according to any one of claims 1 to 4, wherein: The terminal device determines, based on a comparison result between the quality of the detected reference signal and at least two thresholds among a first threshold, a second threshold, and a third threshold, whether a physical layer of the terminal device reports a synchronization indication or an out-of-sync indication, including: If the terminal device detects that the quality of the reference signal is less than or equal to the first threshold, determining that the physical layer of the terminal device reports an out-of-sync indication; If the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, it determines that the physical layer of the terminal device reports a synchronization indication.

7. The method according to any one of claims 1 to 4, wherein: The terminal device determines, based on a comparison result between the quality of the detected reference signal and at least two thresholds among a first threshold, a second threshold, and a third threshold, whether a physical layer of the terminal device reports a synchronization indication or an out-of-sync indication, including: If the terminal device detects that the quality of the reference signal is greater than or equal to the first threshold and less than or equal to the second threshold, determining that the physical layer of the terminal device reports an out-of-sync indication; If the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, it determines that the physical layer of the terminal device reports a synchronization indication.

8. The method according to any one of claims 1 to 4, wherein: The terminal device determines, based on a comparison result between the quality of the detected reference signal and at least two thresholds among a first threshold, a second threshold, and a third threshold, whether a physical layer of the terminal device reports a synchronization indication or an out-of-sync indication, including: If the terminal device detects that the quality of the reference signal is greater than or equal to the first threshold and less than or equal to the second threshold for N consecutive times, determine that the physical layer of the terminal device reports an out-of-sync indication, where N is an integer greater than or equal to 2; If the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, it determines that the physical layer of the terminal device reports a synchronization indication.

9. The method according to any one of claims 1 to 4, wherein: The terminal device determines, based on a comparison result between the quality of the detected reference signal and at least two thresholds among a first threshold, a second threshold, and a third threshold, whether a physical layer of the terminal device reports a synchronization indication or an out-of-sync indication, including: If the terminal device detects that the quality of the reference signal is greater than or equal to the second threshold and less than or equal to the third threshold, determining that the physical layer of the terminal device reports an out-of-sync indication; If the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, it determines that the physical layer of the terminal device reports a synchronization indication.

10. The method according to any one of claims 1 to 4, wherein: The terminal device determines, based on a comparison result between the quality of the detected reference signal and at least two thresholds among a first threshold, a second threshold, and a third threshold, whether a physical layer of the terminal device reports a synchronization indication or an out-of-sync indication, including: If the terminal device detects that the quality of the reference signal is greater than or equal to the second threshold and less than or equal to the third threshold for M consecutive times, determine that the physical layer of the terminal device reports an out-of-sync indication, where M is an integer greater than or equal to 2; If the terminal device detects that the quality of the reference signal is greater than or equal to the third threshold, it determines that the physical layer of the terminal device reports a synchronization indication.

11. The method according to any one of claims 1 to 10, wherein: The terminal device performs high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer, including: The high-level layer of the terminal device filters the indication within the filtering time window as follows: If there is at least one synchronization indication within the filtering time window, determining that the filtering result meets the synchronization requirement; If all indications within the filtering time window are out-of-step indications, it is determined that the filtering result meets the asynchronous requirement.

12. A wireless link monitoring method, the method comprising: The terminal device performs high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer; If the filtering result meets the asynchronous requirement, the terminal device adds 1×Y to the value of the second counter, where Y is a confidence coefficient, and the second counter is used to count asynchronous indications; Among them, when the value of Y is determined by the terminal device, the value of Y is determined based on the result of the channel measurement by the terminal device.

13. The method according to claim 12, wherein: The method further comprises: If the filtering result meets the synchronization requirement, the terminal device adds 1 to the value of the first counter, where the first counter is used to count the synchronization indications.

14. The method according to claim 12 or 13, wherein: The terminal device performs high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer, including: The high-level layer of the terminal device filters the indication within the filtering time window as follows: If there is at least one synchronization indication within the filtering time window, determining that the filtering result meets the synchronization requirement; If all indications within the filtering time window are out-of-step indications, it is determined that the filtering result meets the asynchronous requirement.

15. A wireless link monitoring device, applied to a terminal device, comprising: A detection unit, used for detecting a reference signal; A determination unit, configured to determine whether the physical layer of the terminal device reports a synchronization indication or an out-of-sync indication based on a comparison result between the quality of the detected reference signal and at least two thresholds among the first threshold, the second threshold and the third threshold; The first threshold is associated with a first BLER value, the second threshold is associated with a second BLER value, and the third threshold is associated with a third BLER value; the first BLER value is greater than the second BLER value, and the second BLER value is greater than the third BLER value; A processing unit, used for performing high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer; if the filtering result meets the synchronization requirement, the value of the first counter is increased by 1, wherein the first counter is used to count the synchronization indication; if the filtering result meets the asynchronous requirement, the value of the second counter is increased by 1×Y, wherein Y is a confidence coefficient, wherein the second counter is used to count the asynchronous indication; wherein, when the value of Y is determined by the terminal device, the value of Y is determined based on the result of the channel measurement by the terminal device.

16. The device according to claim 15, wherein: The first BLER value is configured by the network or preconfigured.

17. The device according to claim 15 or 16, wherein: The second BLER value is configured by the network or preconfigured.

18. The device according to any one of claims 15 to 17, wherein: The third BLER value is configured by the network or preconfigured.

19. The device according to any one of claims 15 to 18, wherein: The determination unit is used to determine the physical layer reporting out-of-sync indication of the terminal device if the quality of the reference signal is detected to be less than or equal to the second threshold; if the quality of the reference signal is detected to be greater than or equal to the third threshold, determine the physical layer reporting synchronization indication of the terminal device.

20. The device according to any one of claims 15 to 18, wherein The determination unit is used to determine the physical layer reporting out-of-sync indication of the terminal device if the quality of the reference signal detected is less than or equal to the first threshold; if the quality of the reference signal detected is greater than or equal to the third threshold, determine the physical layer reporting synchronization indication of the terminal device.

21. The device according to any one of claims 15 to 18, wherein: The determination unit is used to determine the physical layer reporting out-of-sync indication of the terminal device if it is detected that the quality of the reference signal is greater than or equal to the first threshold and less than or equal to the second threshold; if it is detected that the quality of the reference signal is greater than or equal to the third threshold, determine the physical layer reporting synchronization indication of the terminal device.

22. The device according to any one of claims 15 to 18, wherein: The determination unit is used to determine that the physical layer reports a desynchronization indication of the terminal device if the quality of the reference signal is detected to be greater than or equal to the first threshold and less than or equal to the second threshold for N consecutive times, where N is an integer greater than or equal to 2; if the quality of the reference signal is detected to be greater than or equal to the third threshold, determine that the physical layer reports a synchronization indication of the terminal device.

23. The device according to any one of claims 15 to 18, wherein: The determination unit is used to determine that the physical layer of the terminal device reports an out-of-sync indication if it is detected that the quality of the reference signal is greater than or equal to the second threshold and less than or equal to the third threshold; and to determine that the physical layer of the terminal device reports a synchronization indication if it is detected that the quality of the reference signal is greater than or equal to the third threshold.

24. The device according to any one of claims 15 to 18, wherein: The determination unit is used to determine that the physical layer reports a desynchronization indication of the terminal device if the quality of the reference signal is detected to be greater than or equal to the second threshold and less than or equal to the third threshold for M consecutive times, where M is an integer greater than or equal to 2; if the quality of the reference signal is detected to be greater than or equal to the third threshold, determine that the physical layer reports a synchronization indication of the terminal device.

25. The device according to any one of claims 15 to 24, wherein: The processing unit is used to filter the indications within the filtering time window through the high layer of the terminal device as follows: if there is at least one synchronization indication within the filtering time window, it is determined that the filtering result meets the synchronization requirement; if all the indications within the filtering time window are out-of-sync indications, it is determined that the filtering result meets the asynchronous requirement.

26. A wireless link monitoring device, applied to a terminal device, comprising: A processing unit, configured to perform high-level filtering on the synchronization indication and / or asynchronous indication reported by the physical layer; If the filtering result meets the asynchronous requirements, the value of the second counter is added by 1×Y, where Y is the confidence coefficient, and the second counter is used to count asynchronous indications; wherein, when the value of Y is determined by the terminal device, the value of Y is determined based on the result of the channel measurement by the terminal device.

27. The device according to claim 26, wherein: The processing unit is further configured to increase the value of a first counter by 1 if the filtering result meets the synchronization requirement, wherein the first counter is configured to count synchronization indications.

28. The device according to any one of claims 26 to 27, wherein The processing unit is used to filter the indications within the filtering time window through the high layer of the terminal device as follows: if there is at least one synchronization indication within the filtering time window, it is determined that the filtering result meets the synchronization requirement; if all the indications within the filtering time window are out-of-sync indications, it is determined that the filtering result meets the asynchronous requirement.

29. A terminal device, comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 14.

30. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 14.

31. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 14.

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