CN115428364A

CN115428364A - Wireless link monitoring method and device and terminal equipment

Info

Publication number: CN115428364A
Application number: CN202080099920.7A
Authority: CN
Inventors: 胡荣贻
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2022-12-02
Also published as: WO2021212282A1

Abstract

The embodiment of the application provides a wireless link monitoring method, a wireless link monitoring device and terminal equipment, wherein the method comprises the following steps: the method comprises the steps that the terminal equipment determines whether a physical layer of the terminal equipment reports a synchronous indication or an out-of-step indication or not based on a comparison result between the detected quality of a reference signal and at least two thresholds of 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, which is greater than the third BLER value.

Description

Wireless link monitoring method and device and terminal equipment

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to a wireless link monitoring method and device and terminal equipment.

Background

In the unlicensed frequency band, due to the existence of a Listen Before Talk (LBT) mechanism, it cannot be guaranteed that Radio Link monitor-Reference Signal (RLM-RS) (also referred to as RS for short) of the base station is successfully transmitted, so that the following states occur on the terminal device side: the terminal device does not detect the RS due to failure of the base station to perform LBT without transmitting the RS. For a New Radio-Unlicensed (NR-U) system, the current RLM mechanism would be inefficient or erroneously determine Radio Link Failure (RLF) for Radio Link monitoring, which is not fair enough for NR-U terminals.

Disclosure of Invention

The embodiment of the application provides a wireless link monitoring method and device and terminal equipment.

The method for monitoring the wireless link provided by the embodiment of the application comprises the following steps:

the method comprises the steps that the terminal equipment determines whether a physical layer of the terminal equipment reports a synchronous indication or an out-of-step indication based on a comparison result between the detected quality of a reference signal and at least two thresholds of 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, which is greater than the third BLER value.

The wireless link monitoring method provided by the embodiment of the application comprises the following steps:

the terminal equipment carries out high-level filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer;

and if the filtering result meets the asynchronous requirement, the terminal equipment adds 1 multiplied by Y to the value of a second counter, wherein Y is a confidence coefficient, and the second counter is used for counting the asynchronous indication.

The embodiment of the application provides a wireless link monitoring device, is applied to terminal equipment, the device includes:

a detection unit for detecting a reference signal;

a determining unit, configured to determine whether a physical layer of the terminal device reports a synchronization indication or an out-of-synchronization indication based on a comparison result between the detected quality of the 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; the first BLER value is greater than the second BLER value, which is greater than the third BLER value.

the processing unit is used for carrying out high-level filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer; and if the filtering result meets the asynchronous requirement, adding 1 × Y to the value of a second counter, wherein Y is a confidence coefficient, and the second counter is used for counting the asynchronous indication.

The terminal device provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing computer programs, and the processor is used for calling and running the computer programs stored in the memory to execute the wireless link monitoring method.

The chip provided by the embodiment of the application is used for realizing the wireless link monitoring method.

Specifically, the chip includes: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the wireless link monitoring method.

A computer-readable storage medium provided in an embodiment of the present application is configured to store a computer program, where the computer program enables a computer to execute the above-mentioned wireless link monitoring method.

The computer program product provided by the embodiment of the present application includes computer program instructions, which make a computer execute the above-mentioned wireless link monitoring method.

The computer program provided in the embodiments of the present application, when running on a computer, causes the computer to execute the above-mentioned wireless link monitoring method.

The above technical solution of the embodiment of the present application provides a new radio link monitoring mechanism, where a terminal device determines, based on a comparison result between quality of a 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-synchronization indication, and since whether the physical layer reports the synchronization indication or the out-of-synchronization indication is determined by multiple thresholds, more radio link states can be distinguished, which is beneficial to reducing an error determination rate of RLF, and efficiency and accuracy of radio link monitoring are improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

fig. 2 is a schematic diagram of a process of RLM from a physical layer to a higher layer according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a high level count provided by an embodiment of the present application;

fig. 4 is a schematic flowchart of a radio link monitoring method according to an embodiment of the present application;

fig. 5 is a first schematic structural diagram of a wireless link monitoring device according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a wireless link monitoring device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a chip of an embodiment of the present application;

fig. 9 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD), a system, a 5G communication system, a future communication system, or the like.

For example, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Optionally, the Network device 110 may be an evolved Node B (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, and the like.

The communication system 100 further comprises at least one terminal 120 located within the coverage area of the network device 110. As used herein, "terminal" includes, but is not limited to, connection via a wireline, such as via a Public Switched Telephone Network (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, e.g., 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 means of another terminal arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal that is arranged to communicate over 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 Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, 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 a radiotelephone transceiver. A terminal can refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having 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.

Optionally, the terminals 120 may perform direct-to-Device (D2D) communication therebetween.

Alternatively, the 5G communication system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 1 exemplarily shows one network device and two terminals, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminals within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal 120 having a communication function, and the network device 110 and the terminal 120 may be the specific devices described above and are not described again here; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which are not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In order 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.

● RLM definition and related parameters

Define: listening evaluates the channel quality of the downlink of the serving cell. RLM measurements are used to generate In-sync (IS) and Out-of-sync (Out of sync, OOS) indications.

Applicable scenarios: a PCell in SA NR mode or NR-DC mode or NE-DC mode; PSCell in NR-DC mode or EN-DC mode.

RLM-RS: a Synchronization Signal Block (Synchronization Signal and PBCH Block, SSB) or a Channel State Information-Reference Signal (CSI-RS) may be used as a Reference Signal for RLM measurement.

Measurement time: in TSSB units (without measurement interval configuration).

For FR1: t is _SSB The Measurement time is not overlapped with a Measurement Gap Repetition Period (MGRP) without scaling the Measurement time; otherwise, the measurement time is lengthened by the scaling factor: p = 1/(1-T) _SSB /MGRP)；

For FR2: due to T _SSB May overlap with the MGRP and require extended measurement time.

·Q _in /Q _out Threshold: q _in IS a threshold, Q, corresponding to IS _out Is the threshold corresponding to OOS. Q _in Threshold sum Q _out The threshold has a corresponding relation with BLER, wherein Q _in Threshold and BLER _in Has a corresponding relationship, Q _ou t threshold and BLER _out There is a correspondence, in an alternative, BLER _in And BLER _out The configuration of (c) is shown in table 1 below:

Configuration	BLER _out	BLER _in
0	10％	2％

TABLE 1

For each RLM-RS resource, the terminal equipment measures the downlink wireless link of the RLM-RS resourceThe quality of the link (i.e. the quality of the reference signal measured on the RLM-RS resource) is compared with the quality of the downlink radio link (i.e. the quality of the reference signal) and Q _in Threshold sum Q _ou And t, comparing the thresholds, and determining the quality of the downlink wireless link of the cell based on the comparison result.

Q _out Definition of the threshold: a threshold for the downlink radio link signal not being received properly, the threshold and the BLER _out There is a corresponding relationship. For SSB-based wireless link monitoring, Q _{out_SSB} PDCCH transmission parameter derivation is based on a hypothesis. For CSI-RS based radio link monitoring, Q _{out_CSI-RS} PDCCH transmission parameter derivation based on another hypothesis.

Q _in Definition of the threshold: a threshold for apparently normal reception of downlink radio link signals, the threshold and the BLER _in There is a corresponding relationship. For SSB-based wireless link monitoring, Q _{in_SSB} PDCCH transmission parameter derivation is based on one hypothesis. For CSI-RS based radio link monitoring, Q _{in_CSI-RS} PDCCH transmission parameter derivation based on another hypothesis.

● RLM physical layer procedures

If the signal quality of RS is lower than Q _out The terminal device needs to send an asynchronous indication of Layer1 (Layer 1, L1) to the higher Layer (Layer 3L 3)), and the higher Layer performs higher Layer filtering (i.e., L3 filtering) on all indications in the Evaluation period (Evaluation period).

If the signal quality of RS is higher than Q _in The terminal device needs to send an L1 synchronization indication to the higher layer (i.e., L3), and the higher layer performs higher layer filtering (i.e., L3 filtering) on all indications in the Evaluation period.

It should be noted that two consecutive L1 s indicate at least an interval T _{Indication_interval} Wherein

T _{Indication_interval} ＝max(10ms,T _RLM-RS,M ) (ii) a Or,

T _{Indication_interval} ＝max(10ms,1.5*DRX_cycle_length,1.5*T _RLM-RS,M )。

it should be noted that the L3 filtering method is generally a method of performing convolution averaging forward 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.

The whole process of RLM from physical layer to higher layer can be seen with reference to FIG. 2, first with reference to the signal level evaluation Q _in /Q _out Next, cell level assessment in/out of sync, then cell level assessment RLF, and finally, whether to trigger RLF.

● RLM high layer procedures

The basic procedures of RLM and RLF in LTE and NR are:

1. the network side pre-configures a threshold aiming at IS and a threshold aiming at OOS for the terminal equipment, wherein the threshold IS given in a BLER form, such as BLER _in (Q corresponding to IS) _in Threshold) and BLER _out (Q corresponding to OOS) _out A threshold);

2. a network side is configured with a measurement resource (namely RLM-RS resource) aiming at RLM for a terminal device in advance, and the terminal device judges the current channel quality state (namely the quality of a downlink radio link) by measuring RS on the given measurement resource;

3. when the terminal equipment detects that the quality of all RSs is less than Q _out When the threshold is limited, the physical layer of the terminal equipment reports an L1 out-of-step indication (L1 OOS indication) to a high layer;

4. when the terminal equipment detects that the quality of at least one RS is more than Q _in When the threshold IS limited, the physical layer of the terminal equipment reports an L1 synchronization indication (L1 IS indication) to a high layer;

5. when a high layer of the terminal equipment detects that a plurality of continuous L1 OOS indications are reported, a timer IS started, whether a plurality of continuous L1 IS indications are reported IS detected during the running period of the timer, if so, the timer IS stopped, if not, an RLF event IS considered to occur, RLF IS reported, and subsequent processes, such as an RRC connection reestablishment process, are triggered.

Specifically, referring to fig. 3, if the value of the OOS counter (OOS counter) reaches a certain value (i.e., N311), the timer T310 IS started, the IS counter (IS counter) IS reset to 0, the IS counter IS incremented by 1 every time an L1 IS indication report IS detected, and it IS detected whether the value of the IS counter continuously increases to a certain value (i.e., N310) during the operation of the timer T310; if yes, the timer T310 is stopped, and if not, the RLF is reported after the timer T310 is overtime.

Tables 2 and 3 below give information about the respective timers and counters.

TABLE 2

TABLE 3

The RLM mechanism is effective in LTE and NR, but in an unlicensed band, due to the existence of the LBT mechanism, it cannot be guaranteed that RLM-RS (also referred to as RS for short) of the base station is successfully transmitted, which may cause three states to occur at the terminal device side, one is that an RS is detected and the quality of the RS is good, one is that an RS is detected and the quality of the RS is poor, and the other is that no RS is detected (the base station fails to transmit an RS due to LBT). For the third state, if existing for a long time, it actually reflects that the channel is occupied for a long time and cannot be used by the base station, and at this time, no matter whether the real channel quality is good or bad, the terminal device cannot be served by the channel of the base station.

That is, the current RLM mechanism cannot solve the confusion of poor channel quality and LBT failure well. For NR-U systems, current RLM mechanisms would be inefficient or misleading to RLF decisions for radio link monitoring, which is not fair enough for NR-U end devices.

In view of the above, it is necessary to further study the related mechanisms of RLM and RLF detection under the feature constraint of the unlicensed frequency band. Therefore, the following technical solution of the embodiment of the present application is proposed, which introduces a new mechanism (metric), and designs a related detection and judgment process based on the new mechanism, so as to improve effective differentiation between poor channel quality and LBT failure.

Fig. 4 is a schematic flowchart of a radio link monitoring method according to an embodiment of the present application, and as shown in fig. 4, the radio link monitoring method includes the following steps:

step 401: the method comprises the steps that the terminal equipment determines whether a physical layer of the terminal equipment reports a synchronous indication or an out-of-step indication or not based on a comparison result between the detected quality of a reference signal and at least two thresholds of 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; the first BLER value is greater than the second BLER value, which is greater than the third BLER value.

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

In the 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 Reference Signal Received Power (RSRP) of the Reference Signal or Reference Signal Received Quality (RSRQ) of the Reference Signal or 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.

In the embodiment of the present application, the first threshold may also be referred to as Q _new The threshold, the second threshold may also be referred to as Q _out The threshold, the third threshold can also be called Q _in And (4) threshold. Here, a first threshold, a second threshold and a third threshold are associated with (or correspond to) the BLER value, 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 BLER valueThe limit is associated with a third BLER value. The first BLER value may also be referred to as BLER _new The second BLER value may also be referred to as BLER _out The third BLER value may also be referred to as BLER _in 。

In an 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 is, the smaller the threshold associated with the BLER value is. Based on this, the third threshold is greater than the second threshold, which is greater than the first threshold.

In an optional manner of the present application, the first BLER value is configured or preconfigured by the network.

In an optional manner of this application, the second BLER value is network configured or preconfigured.

In an optional manner of the present application, the third BLER value is configured or preconfigured by the network.

For example: the first BLER value and the second BLER value are preconfigured, and the third BLER value is network configured.

For example: the first BLER value, the second BLER value, and the third BLER value are all preconfigured.

For example: the first, second, and third BLER values are network configured.

In one example, the relative configuration of BLER is shown in table 4 below:

Configuration	BLER _in	BLER _out	BLER _new
0	2％	10％	20％

TABLE 4

It should be noted that, in an alternative mode, the BLER _in And BLER _out The value of (A) is consistent with the current value, and the BLER is newly added _new Is a block error ratio (BLER) _out Is large. In another alternative, the BLER _in The value of (A) is consistent with the current value, BLER _out Is smaller than the current value, the newly increased BLER _new Is a ratio of BLER _out Is large.

The technical scheme of the embodiment of the application introduces a new mechanism, BLER _new The BLER _new Associated Q _new The threshold corresponds to a physical layer judgment threshold of the terminal device. By Q _new The threshold is used to determine the instances where the reference signal detection is unsuccessful, so that the problem of RLF false alarm triggered by LBT failure can be handled. With the new mechanism, the terminal device can distinguish the following three radio link states: a state in which RS on the channel is detected and the channel quality is good (corresponding to an in-sync state), a state in which RS on the channel is detected and the channel quality is poor (corresponding to an out-of-sync state), and a state in which RS on the channel is not detected and the channel quality is poor (corresponding to a new state). Here, the new state is a state due to failure of the base station LBT without transmitting the RS.

It should be noted that the physical layer of the terminal device is L1 of the terminal device. The higher layer of the terminal device refers to L3 of the terminal device.

According to the technical scheme of the embodiment of the application, the terminal equipment determines whether a physical layer of the terminal equipment reports the synchronous indication or the out-of-step indication or not based on the 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. How to determine whether to report the in-sync indication or the out-of-sync indication is described below.

● Scheme 1-1

If the terminal equipment detects that the quality of the reference signal is less than or equal to the second threshold, determining that a physical layer of the terminal equipment reports an out-of-step indication; and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.

In an alternative, a new mechanism (i.e. BLER) is introduced _new ) Thereafter, the BLER is still followed, irrespective of whether the terminal equipment supports the mechanism or not _in And BLER _out To perform physical layer procedures.

In another alternative, a new mechanism (i.e. BLER) is introduced _new ) Thereafter, a new UE capability (UE capability) is also introduced, which is used to indicate that the terminal device supports the new mechanism. For terminal devices that do not support this mechanism and/or this capability, the BLER is still in accordance _in And BLER _out To perform physical layer procedures.

In the above scheme, the terminal equipment is according to BLER _in And BLER _out To perform physical layer procedures, including: if the quality of the reference signal detected by the terminal equipment is less than or equal to Q _out If so, the physical layer of the terminal device reports the out-of-step indication (namely L1 OOS indication); if the quality of the reference signal detected by the terminal equipment is more than or equal to Q _in And if so, the physical layer of the terminal device reports the synchronization indication (i.e. L1 OOS indication).

● Schemes 1-2

If the terminal equipment detects that the quality of the reference signal is less than or equal to the first threshold, determining that a physical layer of the terminal equipment reports an out-of-step indication; and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.

In an alternative, a new mechanism (i.e. BLER) is introduced _new ) Thereafter, a new UE capability (UE capability) is also introduced, which is used to indicate that the terminal device supports the new mechanism.

For terminal equipment supporting the mechanism and/or the capability, according to BLER _in And BLER _new The implementation is to perform the physical layer procedure, and it should be noted that the difference from the scheme 1-1 is that the BLER _new Replace BLER _out 。

In the above scheme, the terminal equipment is according to BLER _in And BLER _new Performing to perform a physical layer procedure comprising: if the quality of the reference signal detected by the terminal equipment is less than or equal to Q _new If so, the physical layer of the terminal device reports the out-of-step indication (namely L1 OOS indication); if the quality of the reference signal detected by the terminal equipment is more than or equal to Q _in And if so, the physical layer of the terminal device reports the synchronization indication (i.e. L1 OOS indication).

● Schemes 1 to 3

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 a physical layer of the terminal device reports an out-of-step indication; and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.

In an alternative, a new mechanism (i.e. BLER) is introduced _new ) Thereafter, new UE capabilities (UE capabilities) are also introduced, which are used to indicate that the terminal device supports the new mechanism.

For terminal equipment supporting the mechanism and/or the capability, according to BLER _in 、BLER _out And BLER _new Performing to perform physical layer procedures.

In the above scheme, the terminal equipment is according to BLER _in 、BLER _out And BLER _new Performing to perform a physical layer process comprising: if the quality of the reference signal detected by the terminal equipment is more than or equal to Q _new Threshold and less than or equal to Q _out Threshold (i.e. quality of reference signal between Q) _new Threshold sum Q _out Between thresholds), the physical layer of the terminal device reports the out-of-step indication (i.e., L1 OOS indication); if the quality of the reference signal detected by the terminal equipment is more than or equal to Q _in And if the threshold is exceeded, the physical layer of the terminal equipment reports the synchronization indication (namely L1 OOS indication).

● Schemes 1 to 4

If the terminal equipment 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 times continuously, determining that a physical layer of the terminal equipment reports an out-of-step indication, wherein N is an integer greater than or equal to 2; and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.

Here, the difference between the schemes 1-4 and 1-3 is that the terminal device needs to report an out-of-synchronization indication only after detecting 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 N times in succession. For example: if the quality of the reference signal detected by the terminal equipment for N times is more than or equal to Q _new Threshold and less than or equal to Q _out Threshold (i.e. quality of reference signal between Q) _new Threshold sum Q _out Between thresholds), the physical layer of the terminal device reports the out-of-sync indication (i.e., L1 OOS indication). On the other hand, if the quality of the reference signal detected by the terminal equipment is greater than or equal to Q _in And if so, the physical layer of the terminal device reports the synchronization indication (i.e. L1 OOS indication).

● Schemes 1 to 5

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 a physical layer of the terminal device reports an out-of-step indication; and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.

In the above scheme, the terminal equipment is according to BLER _in 、BLER _out And BLER _new Performing to perform a physical layer procedure comprising: if the quality of the reference signal detected by the terminal equipment is more than or equal to Q _out Threshold and less than or equal to Q _in Threshold (i.e. quality of reference signal between Q) _out Threshold sum Q _in Between thresholds), the physical layer of the terminal device reports the out-of-step indication (i.e., L1 OOS indication); if the quality of the reference signal detected by the terminal equipment is more than or equal to Q _in And if so, the physical layer of the terminal device reports the synchronization indication (i.e. L1 OOS indication).

● Schemes 1 to 6

If the terminal equipment 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 times continuously, determining that a physical layer of the terminal equipment reports an out-of-step indication, wherein M is an integer greater than or equal to 2; and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.

Here, the difference between the schemes 1 to 6 and 1 to 5 is that the terminal device needs to report an out-of-synchronization indication only when detecting 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 M times in succession. For example: if the quality of the reference signal detected by the terminal equipment for M times is more than or equal to Q _out Threshold and less than or equal to Q _in Threshold (i.e. quality of reference signal between Q) _out Threshold sum Q _in Between the thresholds), thenAnd the physical layer of the terminal equipment reports the out-of-step indication (namely L1 OOS indication). On the other hand, if the quality of the reference signal detected by the terminal equipment is more than or equal to Q _in And if so, the physical layer of the terminal device reports the synchronization indication (i.e. L1 OOS indication).

The above technical solution of the embodiment of the present application can distinguish more radio link states based on a new mechanism, which is helpful for reducing false alarms in RLF.

The above-described schemes 1-1 to 1-6 of the embodiments of the present application refer to schemes related to the physical layer, and schemes related to the higher layer are described below.

● Scheme 2-1

The terminal equipment carries out high-level filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer; if the filtering result meets the synchronization requirement, the terminal equipment adds 1 to the value of a first counter, wherein the first counter is used for counting the synchronization indication; and if the filtering result meets the asynchronous requirement, the terminal equipment adds 1 to the value of a second counter, wherein the second counter is used for counting the asynchronous indication.

Here, the first counter may also be referred to as an in-sync counter (IS counter). The second counter may also be referred to as an out-of-sync counter (OOS counter).

Here, the higher layer refers to L3, and correspondingly, the higher layer filtering refers to L3 filtering. In an alternative, the filtering method of L3 is configured by a higher layer. Specifically, the higher layer of the terminal device filters the indication within the filtering time window as follows: if at least one synchronous indication exists in the filtering time window, determining that the filtering result meets the synchronous requirement; and if all the indications in the filtering time window are out-of-step indications, determining that the filtering result meets the asynchronous requirement.

● Scheme 2-2

The terminal equipment carries out high-level filtering on the synchronous indication and/or asynchronous indication reported by the physical layer; if the filtering result meets the synchronization requirement, the terminal equipment adds 1 to the value of a first counter, wherein the first counter is used for counting the synchronization indication; and if the filtering result meets the asynchronous requirement, the terminal equipment adds 1 multiplied by Y to the value of a second counter, wherein Y is a confidence coefficient, and the second counter is used for counting the asynchronous indication.

In an optional manner, the value of Y is preset. For example: y is 50%, or 60%, or 100%.

In another optional manner, the value of Y is configured for a network. For example: the value of Y supports the following configuration {10%,20%,100% }, the network may configure the value of Y to be 10%, or 20%, or 100%.

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

The above-described scheme relating to the higher layer may be implemented alone, or may be implemented in combination with any of the above-described schemes relating to the physical layer. For example: any one of scheme 1-1 to scheme 1-6, and scheme 2-2 are practiced in combination. For another example: any one of scheme 1-2 to scheme 1-6, and scheme 2-1 are practiced in combination. The technical solutions of the embodiments of the present application are illustrated below with reference to several specific examples.

Example 1

If the terminal detects that the quality of the reference signal is between Q _out Threshold sum Q _new If the threshold is not within the threshold, the physical layer reports the L1 OOS indication; and the high layer carries out high-layer filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer, and if the filtering result meets the asynchronous requirement, the high layer adds 1 multiplied by Y to the value of the OOS counter.

If the terminal detects that the quality of the reference signal is less than or equal to Q _new If so, the physical layer reports the L1 OOS indication; and the high layer carries out high-layer filtering on the synchronous indication and/or the 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.

If the terminal detects that the quality of the reference signal is greater than or equal to Q _in If so, the physical layer reports the L1 IS indication; and the high layer carries out high-layer filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer, and if the filtering result meets the synchronous requirement, the high layer adds 1 to the value of the IS counter.

If the terminal detects that the quality of the reference signal is between Q _out Threshold sum Q _in And if the threshold is not within the threshold, the physical layer does not report the L1 OOS indication. Or, if the terminal device detects that the quality of the reference signal is between Q for M consecutive times _out Threshold sum Q _in If the threshold is not within the threshold, the physical layer reports the L1 OOS indication; and the high layer carries out high-layer filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer, and if the filtering result meets the asynchronous requirement, the high layer adds 1 multiplied by Y to the value of the OOS counter.

Example two

If the terminal device detects the quality of the reference signal in Q for N consecutive times _out Threshold sum Q _new If the threshold is not within the threshold, the physical layer reports the L1 OOS indication; and the high layer carries out high-layer filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer, and if the filtering result meets the asynchronous requirement, the high layer adds 1 xY to the value of the OOS counter.

If the terminal detects that the quality of the reference signal is greater than or equal to Q _in If the threshold IS exceeded, the physical layer reports L1 IS indication; and the high layer carries out high-layer filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer, and if the filtering result meets the synchronous requirement, the high layer adds 1 to the value of the IS counter.

The technical scheme of the embodiment of the application provides a radio link monitoring method under an NR-U scene, and a new mechanism is introduced, and a relevant detection and judgment process is designed on the basis of the new mechanism, so that the confusion misjudgment of RLF (namely loss of synchronization) and LBT failure caused by an LBT mechanism in an NR-U system is solved, the effective distinction of poor channel quality and LBT failure is improved, and the RLF is judged more accurately.

It should be noted that the technical solution of the embodiment of the present application may be applied to layer3 mobility measurement (L3 mobility measurement), and whether each measurement is valid is determined by introducing a confidence coefficient (i.e., whether the poor measurement result is caused by LBT failure or caused by poor quality of the reference signal is determined).

Fig. 5 is a schematic structural diagram of a first wireless link monitoring device provided in an embodiment of the present application, and is applied to a terminal device, where as shown in fig. 5, the wireless link monitoring device includes:

a detection unit 501 for detecting a reference signal;

a determining unit 502, configured to determine, 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 a physical layer of the terminal device reports a synchronization indication or an out-of-synchronization indication;

In an alternative, the first BLER value is network configured or pre-configured.

In an alternative, the second BLER value is network configured or pre-configured.

In an alternative, the third BLER value is network configured or pre-configured.

In an optional manner, the determining unit 502 is configured to determine that a physical layer of the terminal device reports an out-of-synchronization instruction if it is detected that the quality of the reference signal is less than or equal to the second threshold; and if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.

In an optional manner, the determining unit 502 is configured to determine that a physical layer of the terminal device reports an out-of-synchronization instruction if it is detected that the quality of the reference signal is less than or equal to the first threshold; and if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.

In an optional manner, the determining unit 502 is configured to determine that a physical layer of the terminal device reports an out-of-synchronization instruction 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; and if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.

In an optional manner, the determining unit 502 is configured to determine that a physical layer of the terminal device reports an out-of-sync indication if the quality of the reference signal is detected N times consecutively, where N is an integer greater than or equal to 2, and is greater than or equal to the first threshold and less than or equal to the second threshold; and if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.

In an optional manner, the determining unit 502 is configured to determine that a physical layer of the terminal device reports an out-of-synchronization instruction 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 if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.

In an optional manner, the determining unit 502 is configured to determine that the physical layer of the terminal device reports the out-of-step indication if the quality of the reference signal detected M consecutive times is greater than or equal to the second threshold and less than or equal to the third threshold, where M is an integer greater than or equal to 2; and if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.

In an alternative, the method further comprises:

a processing unit 503, configured to perform high-level filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer; if the filtering result meets the synchronization requirement, adding 1 to the value of a first counter, wherein the first counter is used for counting the synchronization indication; and if the filtering result meets the asynchronous requirement, adding 1 to the value of a second counter, wherein the second counter is used for counting the asynchronous indication.

In an alternative, the method further comprises:

a processing unit 503, configured to perform high-level filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer; if the filtering result meets the synchronization requirement, adding 1 to the value of a first counter, wherein the first counter is used for counting the synchronization indication; and if the filtering result meets the asynchronous requirement, adding 1 multiplied by Y to the value of a second counter, wherein Y is a confidence coefficient, and the second counter is used for counting the asynchronous indication.

In an optional mode, the value of Y is preset; or,

the value of Y is configured by a network; or,

and the value of Y is determined by the terminal equipment.

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

and the value of Y is determined based on the result of the channel measurement of the terminal equipment.

In an optional manner, the processing unit 503 is configured to filter, by a higher layer of the terminal device, the indication within the filtering time window as follows: if at least one synchronous indication exists in the filtering time window, determining that the filtering result meets the synchronous requirement; and if all the indications in the filtering time window are out-of-step indications, determining that the filtering result meets the asynchronous requirement.

It should be understood by those skilled in the art that the foregoing description of the radio link monitoring apparatus according to the embodiments of the present application can be understood by referring to the description of the radio link monitoring method according to the embodiments of the present application.

Fig. 6 is a schematic structural composition diagram of a wireless link monitoring device provided in the embodiment of the present application, which is applied to a terminal device, and as shown in fig. 6, the wireless link monitoring device includes:

a processing unit 601, configured to perform high-level filtering on a synchronous indication and/or an asynchronous indication reported by a physical layer; and if the filtering result meets the asynchronous requirement, adding 1 multiplied by Y to the value of a second counter, wherein Y is a confidence coefficient, and the second counter is used for counting the asynchronous indication.

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

In an optional mode, the value of Y is preset; or,

the value of Y is configured by the network; or,

and the value of Y is determined by the terminal equipment.

In an optional manner, in a case that the value of Y is determined by the terminal device,

In an optional manner, the processing unit 601 is configured to perform, by a higher layer of the terminal device, the following filtering on the indication in the filtering time window: if at least one synchronous indication exists in the filtering time window, determining that the filtering result meets the synchronous requirement; and if all the indications in the filtering time window are out-of-step indications, determining that the filtering result meets the asynchronous requirement.

Fig. 7 is a schematic structural diagram of a communication device 700 according to an embodiment of the present application. The communication device may be a terminal device or a network device, and the communication device 700 shown in fig. 7 includes a processor 710, and the processor 710 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 7, the communication device 700 may further include a memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

Optionally, as shown in fig. 7, the communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, and in particular, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 730 may include a transmitter and a receiver, among other things. The transceiver 730 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 700 may specifically be a network device in the embodiment of the present application, and the communication device 700 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 700 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 700 may implement a corresponding process implemented by the mobile terminal/terminal device in each method according to this embodiment, which is not described herein again for brevity.

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

Optionally, as shown in fig. 8, chip 800 may further include a memory 820. From the memory 820, the processor 810 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 820 may be a separate device from the processor 810, or may be integrated into the processor 810.

Optionally, the chip 800 may further include an input interface 830. The processor 810 can control the input interface 830 to communicate with other devices or chips, and in particular, can obtain information or data transmitted by other devices or chips.

Optionally, the chip 800 may further include an output interface 840. The processor 810 can control the output interface 840 to communicate with other devices or chips, and in particular, can output information or data to other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip.

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

The terminal device 910 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 920 may be configured to implement the corresponding function implemented by the network device in the foregoing method, for brevity, which is not described herein again.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. 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 SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting, for example, the memories 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 (DDR SDRAM), enhanced synchronous SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

An embodiment of the present application further provides a computer-readable storage medium for storing a computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment 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 methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless link monitoring, the method comprising:

the method comprises the steps that the terminal equipment determines whether a physical layer of the terminal equipment reports a synchronous indication or an out-of-step indication or not based on a comparison result between the detected quality of a reference signal and at least two thresholds of 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, which is greater than the third BLER value.
The method of claim 1, wherein the first BLER value is network configured or preconfigured.
The method according to claim 1 or 2, wherein the second BLER value is network configured or pre-configured.
The method of any of claims 1-3, wherein the third BLER value is network configured or pre-configured.
The method according to any one of claims 1 to 4, wherein the determining, by the terminal device, whether a physical layer of the terminal device reports a synchronization indication or an out-of-synchronization indication based on a comparison result between the quality of the detected reference signal and at least two of a first threshold, a second threshold, and a third threshold, comprises:

if the terminal equipment detects that the quality of the reference signal is less than or equal to the second threshold, determining that a physical layer of the terminal equipment reports an out-of-step indication;

and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.
The method according to any one of claims 1 to 4, wherein the determining, by the terminal device, whether a physical layer of the terminal device reports a synchronization indication or an out-of-synchronization indication based on a comparison result between the quality of the detected reference signal and at least two of a first threshold, a second threshold, and a third threshold, comprises:

if the terminal equipment detects that the quality of the reference signal is less than or equal to the first threshold, determining that a physical layer of the terminal equipment reports an out-of-step indication;

and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.
The method according to any one of claims 1 to 4, wherein the determining, by the terminal device, whether a physical layer of the terminal device reports a synchronization indication or an out-of-synchronization indication based on a comparison result between the quality of the detected reference signal and at least two of a first threshold, a second threshold, and a third threshold, comprises:

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 a physical layer of the terminal device reports an out-of-step indication;

and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.
The method of any one of claims 1 to 4, wherein the determining, by the terminal device, whether a physical layer of the terminal device reports an in-synchronization indication or an out-of-synchronization indication based on a comparison result between the detected quality of the reference signal and at least two of a first threshold, a second threshold, and a third threshold, comprises:

if the terminal equipment 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 times continuously, determining that a physical layer of the terminal equipment reports an out-of-step indication, wherein N is an integer greater than or equal to 2;

and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.
The method according to any one of claims 1 to 4, wherein the determining, by the terminal device, whether a physical layer of the terminal device reports a synchronization indication or an out-of-synchronization indication based on a comparison result between the quality of the detected reference signal and at least two of a first threshold, a second threshold, and a third threshold, comprises:

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 a physical layer of the terminal device reports an out-of-step indication;

and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.
The method according to any one of claims 1 to 4, wherein the determining, by the terminal device, whether a physical layer of the terminal device reports a synchronization indication or an out-of-synchronization indication based on a comparison result between the quality of the detected reference signal and at least two of a first threshold, a second threshold, and a third threshold, comprises:

if the terminal equipment 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 times continuously, determining that a physical layer of the terminal equipment reports an out-of-step indication, wherein M is an integer greater than or equal to 2;

and if the terminal equipment detects that the quality of the reference signal is greater than or equal to the third threshold, determining that a physical layer of the terminal equipment reports a synchronous indication.
The method of any of claims 1 to 10, wherein the method further comprises:

the terminal equipment carries out high-level filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer;

if the filtering result meets the synchronization requirement, the terminal equipment adds 1 to the value of a first counter, wherein the first counter is used for counting the synchronization indication;

and if the filtering result meets the asynchronous requirement, the terminal equipment adds 1 to the value of a second counter, wherein the second counter is used for counting the asynchronous indication.
The method of any of claims 1 to 10, wherein the method further comprises:

the terminal equipment carries out high-level filtering on the synchronous indication and/or asynchronous indication reported by the physical layer;

if the filtering result meets the synchronization requirement, the terminal equipment adds 1 to the value of a first counter, wherein the first counter is used for counting the synchronization indication;

and if the filtering result meets the asynchronous requirement, the terminal equipment adds 1 multiplied by Y to the value of a second counter, wherein Y is a confidence coefficient, and the second counter is used for counting the asynchronous indication.
The method of claim 12, wherein,

the value of Y is preset; or,

the value of Y is configured by the network; or,

and the value of Y is determined by the terminal equipment.
The method of claim 13, wherein if the value of Y is determined by the terminal device,

and the value of Y is determined based on the result of the channel measurement of the terminal equipment.
The method according to any one of claims 11 to 14, wherein the performing, by the terminal device, high-layer filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer comprises:

the high level of the terminal device filters the indication within the filtering time window as follows:

if at least one synchronous indication exists in the filtering time window, determining that the filtering result meets the synchronous requirement;

and if all the indications in the filtering time window are out-of-step indications, determining that the filtering result meets the asynchronous requirement.
A method of wireless link monitoring, the method comprising:

the terminal equipment carries out high-level filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer;

and if the filtering result meets the asynchronous requirement, the terminal equipment adds 1 multiplied by Y to the value of a second counter, wherein Y is a confidence coefficient, and the second counter is used for counting the asynchronous indication.
The method of claim 16, wherein the method further comprises:

and if the filtering result meets the synchronization requirement, the terminal equipment adds 1 to the value of a first counter, wherein the first counter is used for counting the synchronization indication.
The method of claim 16 or 17,

the value of Y is preset; or,

the value of Y is configured by the network; or,

and the value of Y is determined by the terminal equipment.
The method of claim 18, wherein if the value of Y is determined by the terminal device,

and the value of Y is determined based on the result of the channel measurement of the terminal equipment.
The method according to any one of claims 16 to 19, wherein the performing, by the terminal device, high-layer filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer comprises:

the high level of the terminal device filters the indication within the filtering time window as follows:

if at least one synchronous indication exists in the filtering time window, determining that the filtering result meets the synchronous requirement;

and if all the indications in the filtering time window are out-of-step indications, determining that the filtering result meets the asynchronous requirement.
A wireless link monitoring device is applied to terminal equipment, and the device comprises:

a detection unit for detecting a reference signal;

a determining unit, configured to determine whether a physical layer of the terminal device reports a synchronization indication or an out-of-synchronization indication based on a comparison result between the detected quality of the 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; the first BLER value is greater than the second BLER value, which is greater than the third BLER value.
The apparatus of claim 21, wherein the first BLER value is network configured or preconfigured.
The apparatus of claim 21 or 22, wherein the second BLER value is network configured or pre-configured.
The apparatus of any of claims 21-23, wherein the third BLER value is network configured or pre-configured.
The apparatus according to any one of claims 21 to 24, wherein the determining unit is configured to determine a physical layer report out-of-sync indication of the terminal device if it is detected that the quality of the reference signal is less than or equal to the second threshold; and if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.
The apparatus according to any one of claims 21 to 24, wherein the determining unit is configured to determine a physical layer report out-of-sync indication of the terminal device if it is detected that the quality of the reference signal is less than or equal to the first threshold; and if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.
The apparatus according to any one of claims 21 to 24, wherein the determining unit is configured to determine a physical layer report 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; and if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.
The apparatus according to any one of claims 21 to 24, wherein the determining unit is configured to determine a physical layer report out-of-sync indication of the terminal device if the quality of the reference signal is detected N consecutive times, where N is an integer greater than or equal to 2, and is greater than or equal to the first threshold and less than or equal to the second threshold; and if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.
The apparatus according to any one of claims 21 to 24, wherein the determining unit is configured to determine a physical layer report out-of-synchronization indication of the terminal device 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 if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.
The apparatus according to any one of claims 21 to 24, wherein the determining unit is configured to determine that the physical layer of the terminal device reports the out-of-sync indication if the quality of the reference signal is detected for M consecutive times, where M is an integer greater than or equal to 2, and is greater than or equal to the second threshold and less than or equal to the third threshold; and if the quality of the reference signal is detected to be greater than or equal to the third threshold, determining that the physical layer of the terminal equipment reports the synchronous indication.
The apparatus of any of claims 21 to 30, wherein the method further comprises:

the processing unit is used for carrying out high-level filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer; if the filtering result meets the synchronization requirement, adding 1 to the value of a first counter, wherein the first counter is used for counting the synchronization indication; and if the filtering result meets the asynchronous requirement, adding 1 to the value of a second counter, wherein the second counter is used for counting the asynchronous indication.
The apparatus of any of claims 21 to 30, wherein the method further comprises:

the processing unit is used for carrying out high-level filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer; if the filtering result meets the synchronization requirement, adding 1 to the value of a first counter, wherein the first counter is used for counting the synchronization indication; and if the filtering result meets the asynchronous requirement, adding 1 × Y to the value of a second counter, wherein Y is a confidence coefficient, and the second counter is used for counting the asynchronous indication.
The apparatus of claim 32, wherein,

the value of Y is preset; or,

the value of Y is configured by the network; or,

and the value of Y is determined by the terminal equipment.
The apparatus of claim 33, wherein if the value of Y is determined by the terminal device,

and the value of Y is determined based on the result of the channel measurement of the terminal equipment.
The apparatus according to any of claims 31 to 34, wherein the processing unit is configured to filter the indication within the filtering time window by a higher layer of the terminal device by: if at least one synchronous indication exists in the filtering time window, determining that the filtering result meets the synchronous requirement; and if all the indications in the filtering time window are out-of-step indications, determining that the filtering result meets the asynchronous requirement.
A wireless link monitoring device applied to terminal equipment comprises:

the processing unit is used for carrying out high-level filtering on the synchronous indication and/or the asynchronous indication reported by the physical layer; and if the filtering result meets the asynchronous requirement, adding 1 multiplied by Y to the value of a second counter, wherein Y is a confidence coefficient, and the second counter is used for counting the asynchronous indication.
The apparatus of claim 36, wherein the processing unit is further configured to increment a value of a first counter by 1 if the filtering result meets a synchronization requirement, wherein the first counter is configured to count a synchronization indication.
The apparatus of claim 36 or 37,

the value of Y is preset; or,

the value of Y is configured by the network; or,

and the value of Y is determined by the terminal equipment.
The apparatus of claim 38, wherein if the value of Y is determined by the terminal device,

and the value of Y is determined based on the result of the channel measurement of the terminal equipment.
The apparatus according to any of claims 36 to 39, wherein the processing unit is configured to filter the indication within the filtering time window by a higher layer of the terminal device as follows: if at least one synchronous indication exists in the filtering time window, determining that the filtering result meets the synchronous requirement; and if all the indications in the filtering time window are out-of-step indications, determining that the filtering result meets the asynchronous requirement.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and execute the computer program stored in the memory, performing the method of any of claims 1 to 20.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 20.
A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 20.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 20.
A computer program for causing a computer to perform the method of any one of claims 1 to 20.