Beam recovery method, device, communication equipment and storage medium

Abstract

An embodiment of the present disclosure provides a beam recovery method, which is applied to a terminal. The method includes: determining a beam recovery operation based on a detection result of a reference signal RS used for beam failure detection BFD at a detection opportunity within an active time window; wherein the active time window includes a variable number of detection opportunities; before beam recovery or before starting a beam pre-recovery process, increasing the number of detection opportunities within the active time window based on the detection result of each RS detection.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication technology but is not limited to the field of wireless communication technology, and in particular to a beam recovery method, apparatus, communication equipment, and storage medium. Background Art

[0002] The proliferation of mobile devices and the rapid development of the mobile internet have led to an explosive growth in mobile data, placing higher demands on traffic density, network capacity, user speeds, and latency. To address these challenges, the fifth-generation (5G) mobile communications air interface features a completely new air interface design tailored to new scenarios and frequency bands. High-frequency millimeter wave communications are a key research area for 5G. Compared to lower-frequency data transmission, millimeter wave transmission presents unique challenges, such as the vulnerability of communication interruptions when the data transmission channel is obstructed.

[0003] In certain scenarios of the new air interface system, due to environmental changes, the previously established beam pair is suddenly blocked, and the network and terminal do not have sufficient time to adjust the beam. In order to quickly complete the reconstruction of the beam pair in the authorized frequency band, a beam failure recovery process is introduced for this scenario. Summary of the Invention

[0004] The embodiments of the present disclosure disclose a beam recovery method, apparatus, communication equipment, and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a beam restoration method is provided, wherein the method is applied to a terminal, and includes:

[0006] Determine a beam recovery operation based on a detection result of a reference signal (RS) for beam failure detection (BFD) at a detection opportunity within the active time window;

[0007] The active time window includes a variable number of detection opportunities; before beam recovery or before starting the beam pre-recovery process, the number of detection opportunities in the active time window is increased according to the detection result of each RS detection.

[0008] In one embodiment, the operation of determining beam recovery based on an RS detection result for BFD at a detection opportunity within the active time window includes:

[0009] In response to the RS detection result indicating that the number of beam failure instances BFI is greater than a first number threshold, starting a beam pre-recovery process;

[0010] and / or,

[0011] In response to the RS detection result indicating that the number of beam failure instances BFI is greater than a second number threshold, beam pair switching is performed; wherein the second number threshold is greater than the first number threshold.

[0012] In one embodiment, the initiating beam pre-recovery process further includes:

[0013] In response to the RS detection result indicating that the number of beam failure instances BFI is greater than a first number threshold, the optional beam pairs are stored in a beam pair resource pool.

[0014] In one embodiment, in response to the RS detection result indicating that the number of beam failure instances BFI is greater than a second number threshold, performing the switching of the beam pair includes:

[0015] In response to the RS detection result indicating that the number of beam failure instances BFI is greater than a second number threshold, the used beam pair is switched to a beam pair in a beam pair resource pool.

[0016] In one embodiment, in response to performing beam pair switching, the method further includes:

[0017] Sending indication information carrying a beam pair selection result for switching to the base station; wherein the selected beam pair is a beam pair in the resource pool.

[0018] In one embodiment, the initiating beam pre-recovery process includes:

[0019] Send pre-recovery indication information to the base station to start the beam pre-recovery process.

[0020] In one embodiment, before determining beam recovery based on a detection result of a reference signal (RS) for beam failure detection (BFD) at a detection opportunity within the active time window, the method further includes:

[0021] Receiving a first sequence on a preset time-frequency domain resource;

[0022] A second sequence generated based on BFD RS sequence parameters;

[0023] It is determined whether the base station successfully sends the BFD RS on the preset time-frequency domain resources according to a correlation peak value determined by performing autocorrelation between the second sequence and the first sequence.

[0024] In one embodiment, the method further includes:

[0025] Receive configuration information;

[0026] The configuration information includes one or more of the following: information about the preset time-frequency domain resources and / or information about the BFD RS sequence parameters.

[0027] In one embodiment, determining whether the BFD RS is successfully sent on the preset time-frequency domain resources based on a correlation peak value determined by autocorrelating the second sequence with the first sequence includes:

[0028] In response to the correlation peak being less than the correlation peak threshold, determining that the base station fails to send the BFD RS on the preset time-frequency domain resources;

[0029] or,

[0030] In response to the correlation peak being greater than the correlation peak threshold, it is determined that the base station successfully sends the BFD RS on the preset time-frequency domain resources.

[0031] In one embodiment, the method further includes:

[0032] In response to determining that the base station fails to send the BFD RS on the preset time-frequency domain resources, determining that the RS detection result indicates that the RS detection is BFI;

[0033] or,

[0034] In response to determining that the base station successfully sends the BFD RS on the preset time-frequency domain resources, the detection result is determined according to the first layer L1 reference signal received power RSRP.

[0035] In one embodiment, determining the detection result according to the first layer L1 reference signal received power RSRP includes:

[0036] In response to the RSRP being less than an RSRP threshold, determining that the RS detection result indicates that the RS detection is BFI;

[0037] or,

[0038] In response to the RSRP being greater than an RSRP threshold, it is determined that the RS detection result indicates that this RS detection is not BFI.

[0039] In one embodiment, the method further includes:

[0040] In response to determining that the RS detection result indicates that the current RS detection is BFI, the number of the RS detection opportunities is increased.

[0041] According to a second aspect of an embodiment of the present disclosure, a beam recovery method is provided, wherein the method is applied to a base station, and includes:

[0042] Send BFD RS;

[0043] The BFD RS is used for the terminal to determine a beam recovery operation based on a detection result of the RS for beam failure detection (BFD) at a detection opportunity within the active time window;

[0044] The active time window includes a variable number of detection opportunities; before beam recovery or before starting the beam pre-recovery process, the number of detection opportunities in the active time window is increased according to the detection result of each RS detection.

[0045] In one embodiment, the method further includes:

[0046] The receiving terminal sends pre-recovery indication information for starting the beam pre-recovery process.

[0047] In one embodiment, the method further includes:

[0048] In response to receiving a pre-recovery indication sent by the terminal to start the beam pre-recovery process, the beam pre-recovery process is started.

[0049] In one embodiment, the method further includes:

[0050] The receiving terminal sends indication information carrying the beam pair selection result for switching; wherein the selected beam pair is a beam pair in the resource pool.

[0051] In one embodiment, the method further includes:

[0052] In response to the number of the RSs being sent being greater than a second number threshold and the indication information carrying the switching beam pair selection result sent by the terminal not being received, the beam pairs stored in the beam pair resource pool are released.

[0053] In one embodiment, the method further includes:

[0054] In response to the number of the RSs being sent being greater than a second number threshold and receiving indication information sent by the terminal carrying a selection result of a switching beam pair, the used beam is switched to the switched beam indicated by the switching result.

[0055] According to a third aspect of an embodiment of the present disclosure, a beam restoration device is provided, wherein the device is applied to a terminal, and includes a determination module; wherein,

[0056] The determining module is configured to: determine a beam recovery operation according to a detection result of an RS for beam failure detection (BFD) at a detection opportunity within an active time window;

[0057] The active time window includes a variable number of detection opportunities; before beam recovery or before starting the beam pre-recovery process, the detection opportunities within the active time window are increased according to the detection results of each RS detection.

[0058] According to a fourth aspect of an embodiment of the present disclosure, a beam restoration device is provided, wherein the device is applied to a base station, and includes a sending module; wherein,

[0059] The sending module is configured to send a BFD RS;

[0060] The BFD RS is used for the terminal to determine a beam recovery operation based on a detection result of the RS for beam failure detection (BFD) at a detection opportunity within the active time window;

[0061] The active time window includes a variable number of detection opportunities; before beam recovery or before starting the beam pre-recovery process, the detection opportunities within the active time window are increased according to the detection results of each RS detection.

[0062] According to a fifth aspect of an embodiment of the present disclosure, a communication device is provided, comprising:

[0063] processor;

[0064] a memory for storing instructions executable by the processor;

[0065] The processor is configured to implement the method described in any embodiment of the present disclosure when running the executable instructions.

[0066] According to a sixth aspect of an embodiment of the present disclosure, a computer storage medium is provided, wherein the computer storage medium stores a computer executable program, and when the executable program is executed by a processor, the method described in any embodiment of the present disclosure is implemented.

[0067] In an embodiment of the present disclosure, a beam recovery operation is determined based on an RS detection result for beam failure detection BFD at a detection opportunity within an active time window; here, since the active time window contains a variable number of detection opportunities, before beam recovery or before starting the beam pre-recovery process, the number of detection opportunities within the active time window can be increased according to the detection result of each RS detection, and BFD is performed at the detection opportunity within the active time window. Compared with the situation where the RS detection result for BFD cannot be determined outside the channel occupancy time range or the RS detection result for BFD cannot be determined before receiving relevant information about the channel occupancy time, the RS detection result can be accurately obtained based on the detection opportunity within the active time window, thereby performing a beam recovery operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 The diagram is a structural diagram of a wireless communication system.

[0069] Figure 2a The figure is a schematic diagram showing a beam recovery process according to an exemplary embodiment.

[0070] Figure 2b The figure is a schematic diagram showing a beam recovery process according to an exemplary embodiment.

[0071] Figure 3 The figure is a schematic diagram showing a beam recovery process according to an exemplary embodiment.

[0072] Figure 4 The figure is a schematic diagram showing a beam recovery process according to an exemplary embodiment.

[0073] Figure 5 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0074] Figure 6 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0075] Figure 7 The figure is a schematic diagram showing a beam recovery process according to an exemplary embodiment.

[0076] Figure 8 The figure is a schematic diagram showing a beam recovery process according to an exemplary embodiment.

[0077] Figure 9 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0078] Figure 10 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0079] Figure 11 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0080] Figure 12 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0081] Figure 13 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0082] Figure 14The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0083] Figure 15 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0084] Figure 16 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0085] Figure 17 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0086] Figure 18 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0087] Figure 19 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0088] Figure 20 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0089] Figure 21 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0090] Figure 22 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0091] Figure 23 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0092] Figure 24 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0093] Figure 25 The figure is a flowchart of a beam recovery method according to an exemplary embodiment.

[0094] Figure 26 The figure is a schematic diagram showing a beam recovery device according to an exemplary embodiment.

[0095] Figure 27 The figure is a schematic diagram showing a beam recovery device according to an exemplary embodiment.

[0096] Figure 28 The figure is a schematic structural diagram of a terminal according to an exemplary embodiment.

[0097] Figure 29It is a block diagram of a base station according to an exemplary embodiment. DETAILED DESCRIPTION

[0098] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0099] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present disclosure. The singular forms "a," "an," and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0100] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0101] For the purpose of brevity and ease of understanding, the terms "greater than" or "less than" are used herein to describe magnitude relationships. However, those skilled in the art will understand that the term "greater than" also encompasses the meaning of "greater than or equal to," and "less than" also encompasses the meaning of "less than or equal to."

[0102] Please refer to Figure 1 , which shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure. Figure 1 As shown, the wireless communication system is a communication system based on mobile communication technology, and the wireless communication system may include: several user equipments 110 and several base stations 120.

[0103] The user equipment 110 may refer to a device that provides voice and / or data connectivity to a user. The user equipment 110 may communicate with one or more core networks via a radio access network (RAN). The user equipment 110 may be an Internet of Things user device, such as a sensor device, a mobile phone, and a computer with an Internet of Things user device. For example, the user equipment 110 may be a fixed, portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted device. For example, a station (STA), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote user device, an access terminal, a user terminal, a user agent, a user device, or user equipment. Alternatively, the user equipment 110 may be a device of an unmanned aerial vehicle. Alternatively, the user equipment 110 may be an in-vehicle device, such as a vehicle-mounted computer with wireless communication capabilities, or a wireless user device connected to an external vehicle-mounted computer. Alternatively, the user equipment 110 may also be a roadside device, for example, a street lamp, a traffic light, or other roadside device with a wireless communication function.

[0104] The base station 120 may be a network-side device in a wireless communication system. The wireless communication system may be a fourth-generation mobile communication technology (4G) system, also known as a long-term evolution (LTE) system; or, the wireless communication system may be a 5G system, also known as a new air interface system or a 5G NR system. Alternatively, the wireless communication system may be a next-generation system of the 5G system. The access network in the 5G system may be referred to as a New Generation-Radio Access Network (NG-RAN).

[0105] Among them, the base station 120 can be an evolved base station (eNB) adopted in a 4G system. Alternatively, the base station 120 can also be a base station (gNB) adopting a centralized distributed architecture in a 5G system. When the base station 120 adopts a centralized distributed architecture, it usually includes a centralized unit (CU) and at least two distributed units (DU). The centralized unit is provided with a protocol stack of a packet data convergence protocol (PDCP) layer, a radio link layer control protocol (RLC) layer, and a media access control (MAC) layer; the distributed unit is provided with a physical (PHY) layer protocol stack. The embodiment of the present disclosure does not limit the specific implementation method of the base station 120.

[0106] A wireless connection can be established between the base station 120 and the user equipment 110 via a wireless air interface. In various implementations, the wireless air interface is a wireless air interface based on the fourth generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; or, the wireless air interface can also be a wireless air interface based on the next generation mobile communication network technology standard of 5G.

[0107] In some embodiments, E2E (End to End) connections may also be established between user devices 110, such as in scenarios such as V2V (vehicle to vehicle) communication, V2I (vehicle to infrastructure) communication, and V2P (vehicle to pedestrian) communication in vehicle-to-everything (V2X) communication.

[0108] Here, the above user equipment can be considered as the terminal equipment in the following embodiments.

[0109] In some embodiments, the wireless communication system may further include a network management device 130 .

[0110] Several base stations 120 are respectively connected to a network management device 130. The network management device 130 may be a core network device in a wireless communication system. For example, the network management device 130 may be a mobility management entity (MME) in an evolved packet core (EPC). Alternatively, the network management device may be other core network devices, such as a serving gateway (SGW), a public data network gateway (PGW), a policy and charging rules function (PCRF), or a home subscriber server (HSS). The embodiments of the present disclosure do not limit the implementation form of the network management device 130.

[0111] To facilitate understanding by those skilled in the art, the embodiments of the present disclosure list multiple implementation methods to clearly illustrate the technical solutions of the embodiments of the present disclosure. Of course, those skilled in the art will understand that the multiple embodiments provided in the embodiments of the present disclosure can be implemented individually, or can be implemented together with the methods of other embodiments in the embodiments of the present disclosure, or can be implemented together with some methods in other related technologies individually or in combination; the embodiments of the present disclosure do not limit this.

[0112] To better understand the technical solutions described in any embodiment of the present disclosure, first, the relevant application scenarios of beam recovery are described:

[0113] In one embodiment, a beam failure recovery process is introduced in the primary cell and the secondary cell. The beam quality of the Physical Downlink Control Channel (PDCCH) can be monitored by a periodic reference signal (RS) configured for beam failure detection (BFD). The periodic RS and the PDCCH have the same transmission configuration indication (TCI) status identifier. The BFD process determines whether all monitored beams have failed based on the periodic BFD RS.

[0114] In one embodiment, see Figure 2a and Figure 2bThe beam failure instance counter is used to count beam failure instances. The maximum count value of the beam failure instance counter is x (for example, x=3), that is, see Figure 2a , when x consecutive beam states are detected to be higher than the threshold, it indicates that the beam has been recovered; see Figure 2b ,When x beam failure instances are detected consecutively, it indicates beam failure.

[0115] In one embodiment, Figure 2a In , when the first beam failure instance is detected, the BFD timer is started. When the RS quality of x consecutive beams is detected to be better than the threshold before the BFD timer expires, the beam failure is declared to be recovered. Figure 2b When the first beam failure is detected, the BFD timer is started. During the BFD timer, a beam failure is declared if three consecutive beam failures are detected.

[0116] In related technologies, spectrum resource shortages are an increasingly severe reality facing mobile communication networks. Licensed frequency bands, especially high-value low-frequency bands, not only have limited bandwidth but are also being rapidly consumed by a growing user base. To address the challenge of spectrum shortage and increase system capacity, a research plan for NR-based unlicensed frequency bands (NR-U) has been proposed. Although unlicensed frequency bands are abundant, to ensure fair coexistence between different radio access technologies (RATs) using these bands, License Assisted Access (LAA) introduces the Listen Before Talk (LBT) technology based on Clear Channel Assessment (CCA). Introducing LBT into NR-U is a key approach to ensuring fair coexistence. The transmitter must perform a channel idleness check before transmission and can only occupy the channel after LBT succeeds. Therefore, during beam failure detection, the LBT mechanism may increase the transmission uncertainty of the BFD RS, resulting in the BFD RS quality used for terminal evaluation not reflecting the actual beam status.

[0117] See Figure 3 When LBT succeeds, BFD RS will be transmitted within the Channel Occupancy Time (COT). However, if LBT fails, the base station cannot transmit BFD RS to the terminal, and the terminal cannot measure BFD RS outside the COT. In this case, even if the terminal is configured with periodic BFD RS, the number of BFD RS within the COT is insufficient to evaluate the quality of the control beam.

[0118] In one embodiment, see Figure 4 During beam failure detection, if beam failure occurs before the terminal receives DCI 2_0 with COT indication information, the terminal will not be able to perform BFD RS measurement. In this case, the terminal cannot ensure that BFD RS is sent within the COT, so beam failure detection cannot be triggered. Therefore, in the NR-U system, in order to reflect the actual beam status and achieve fast beam recovery, it is necessary to study the beam failure detection and recovery mechanism during uncertain BFD RS transmission in unlicensed frequency bands.

[0119] like Figure 5 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0120] Step 51: Determine a beam recovery operation based on the RS detection result for beam failure detection (BFD) at a detection opportunity within the active time window.

[0121] The active time window includes a variable number of detection opportunities. Before beam recovery or before starting the beam pre-recovery process, the number of detection opportunities in the active time window is increased according to the detection result of each RS detection.

[0122] Here, the terminal can be but is not limited to a mobile phone, a wearable device, a vehicle-mounted terminal, a roadside unit (RSU), a smart home terminal, an industrial sensor device, and other terminals.

[0123] In one embodiment, the beam may be a beam pair used for data transmission between the terminal and the base station. Here, the beam pair includes: a receiving beam for the terminal to receive data and a transmitting beam for the base station to transmit a beam.

[0124] Here, a base station can be an access device for a terminal to access a network. The base station can be of various types. For example, a base station of a third-generation mobile communication (3G) network, a base station of a fourth-generation mobile communication (4G) network, a base station of a fifth-generation mobile communication (5G) network, or a base station of any generation of communication system.

[0125] In one embodiment, the beam may be a downlink beam. Here, the beam failure detection may be downlink beam failure detection. The beam recovery may be downlink beam recovery.

[0126] In one embodiment, beam recovery includes the process of beam access using available beams.

[0127] In one embodiment, in response to determining beam failure based on RS detection results for beam failure detection (BFD) at a detection opportunity within an active time window, and the terminal has an available beam that can replace the current beam, the terminal performs beam access based on the available beam. If access is successful using the available beam, data can be transmitted between the terminal and the base station using the available beam.

[0128] In some embodiments, beam failure may be caused in response to terminal movement; or, beam failure may be caused in response to network congestion; or, beam failure may be caused in response to terminal rotation.

[0129] In one embodiment, the active time window includes multiple detection opportunities. At each detection opportunity, the terminal performs BFD RS detection and obtains an RS detection result for BFD. Here, the RS detection result for BFD may indicate a beam failure result.

[0130] In one embodiment, an initial number of detection opportunities included in the active time window is preset. For example, the number of detection opportunities included in the preset active time window is 3. Here, configuration information including the indication of the initial number can be received in advance from the base station.

[0131] In one embodiment, whether to increase the number of detection opportunities included in the active time window is determined according to RS detection results at the detection opportunities within the active time window.

[0132] In one embodiment, in response to the number of beam failure instances corresponding to RS detection results at detection opportunities within the active time window being less than the number required to determine whether the beam has failed, it is determined that the number of detection opportunities included in the active time window is increased. Here, since the beam failure instances are insufficient to determine whether the beam has failed, it is necessary to continue increasing the number of detection opportunities included in the active time window and continue performing BFD RS detection to reduce the number of instances in which it is impossible to determine whether the beam has failed due to an insufficient number of beam failure instances. In response to the number of beam failure instances corresponding to RS detection results at detection opportunities within the active time window being greater than or equal to the number required to determine whether the beam has failed, it is determined that the number of detection opportunities included in the active window is not increased. Here, since the beam failure instances are sufficient to determine whether the beam has failed, it is not necessary to continue increasing the number of detection opportunities included in the active time window.

[0133] In one embodiment, n beam failure instances need to be detected to determine whether the beam is in a beam failure state. In response to the number of detection opportunities within the active time window being less than n, the number of detection opportunities included in the active time window can be increased; or, n beam failure instances need to be detected to determine whether the beam has failed. In response to the number of beam failure instances detected at the detection opportunities within the active time window being less than n, the number of detection opportunities included in the active time window can be increased.

[0134] In one embodiment, whether to increase the number of detection opportunities included in the active time window is determined according to the beam recovery result.

[0135] In one embodiment, in response to beam recovery, it is determined not to increase the number of detection opportunities included in the active time window; in response to beam non-recovery, it is determined to increase the number of detection opportunities included in the active time window.

[0136] In one embodiment, whether to increase the number of detection opportunities included in the active time window is determined according to the activation of the beam pre-recovery process.

[0137] In one embodiment, in response to the beam not being recovered and the beam pre-recovery process not being initiated, the number of detection opportunities included in the active time window is increased. In response to the beam pre-recovery process being initiated, the number of detection opportunities included in the active time window is increased until the beam is recovered.

[0138] In one embodiment, when communicating in an unlicensed frequency band, the active time window may correspond to a period of channel occupancy. During this period, a beam failure instance counter is used to count the number of beam failures. Whether beam recovery is required is determined based on the count result of the beam failure instance counter within a predetermined period. Here, a beam failure instance corresponds to one beam failure result.

[0139] In one embodiment, when communicating in an unlicensed frequency band, the active time window may also correspond to a period of non-channel occupancy. During this period, a beam failure instance counter is used to count the number of beam failures. Whether beam recovery is necessary is determined based on the count result of the beam failure instance counter within a predetermined time period. Here, one beam failure instance corresponds to one beam failure result. The non-channel occupancy period may not overlap with, or may partially overlap with, the channel occupancy period.

[0140] Here, whether the beam fails is determined based on the RS detection result for BFD.

[0141] In one embodiment, in response to a beam failure instance counter's count value being greater than a count threshold within a predetermined time period, indicating a beam failure state, a determination is made that beam recovery is necessary. In response to a beam failure instance counter's count value being less than the count threshold within a predetermined time period, indicating no beam failure, a determination is made that beam recovery is not necessary. For example, if the predetermined time period is 3 seconds and the count threshold is 3, then when the beam failure instance counter's count value reaches 3 within 3 seconds, a determination is made that beam recovery is necessary. When the beam failure instance counter's count value within 3 seconds is less than 3, a determination is made that beam recovery is not necessary. In one embodiment, the beam failure instance counter's count value within the predetermined time period is a continuous count value.

[0142] In one embodiment, in response to a need for beam restoration, the beam restoration operation may include initiating a beam pre-restoration process. The beam pre-restoration process may include at least one of the following: determining an available beam pair; sending a beam restoration request; and receiving a response message sent by the base station in response to the beam restoration request.

[0143] In one embodiment, in response to the need for beam recovery, the currently used beam can be switched to another available beam. For example, if the currently used beam is beam A and the quality of beam A is less than a quality threshold, beam recovery is required. In this case, beam A can be switched to any of the available beams B, C, and D.

[0144] In one embodiment, in response to a need for beam recovery, a beam pre-recovery procedure is initiated; and in response to a determination that beam recovery is performed based on RS detection results for BFD at a set number of detection opportunities after the initiation of the beam pre-recovery procedure, the beam recovery procedure does not need to be initiated. For example, if the number is set to three, in response to a need for beam recovery, a beam pre-recovery procedure is initiated; and in response to a determination that beam recovery is performed based on RS detection results for BFD at three detection opportunities after the initiation of the beam pre-recovery procedure, the beam recovery procedure does not need to be initiated.

[0145] In one embodiment, in response to a need for beam recovery, a beam pre-recovery procedure is initiated; in response to a beam failure being determined again based on a detection result of an RS for BFD at a set number of detection opportunities after the initiation of the beam pre-recovery procedure, the beam recovery procedure is initiated. For example, the number is set to three, and in response to a need for beam recovery, the beam pre-recovery procedure is initiated; in response to a beam failure being determined again based on a detection result of an RS for BFD at three detection opportunities after the initiation of the beam pre-recovery procedure, the beam recovery procedure is initiated.

[0146] In one embodiment, the beam restoration process can be based on the results of the beam pre-restoration process. For example, the beam restoration process can be based on the available beams determined by the beam pre-restoration process. In this way, because the beam pre-restoration process is performed before beam restoration, beam restoration can be performed quickly when needed, thereby improving resource utilization efficiency.

[0147] In an embodiment of the present disclosure, a beam recovery operation is determined based on an RS detection result for BFD at a detection opportunity within an active time window. Here, since the active time window contains a variable number of detection opportunities, before beam recovery or before starting the beam pre-recovery process, the number of detection opportunities in the active time window can be increased based on the detection result of each RS detection, and BFD is performed at the detection opportunity within the active time window. Compared with the situation where the RS detection result for BFD cannot be determined outside the channel occupancy time range or the RS detection result for BFD cannot be determined before receiving relevant information about the channel occupancy time, the RS detection result can be accurately obtained based on the detection opportunity within the active time window to perform a beam recovery operation.

[0148] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0149] like Figure 6 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0150] Step 61: In response to the RS detection result indicating that the number of beam failure instances BFI is greater than a first number threshold, start a beam pre-recovery process;

[0151] and / or,

[0152] In response to the RS detection result indicating that the number of beam failure instances BFI is greater than a second number threshold, beam pair switching is performed; wherein the second number threshold is greater than the first number threshold.

[0153] In one embodiment, the first quantity threshold and / or the second quantity threshold are preconfigured.

[0154] In one embodiment, configuration information indicating the first quantity threshold and / or the second quantity threshold is received from a base station.

[0155] In one embodiment, the beam pre-restoration process may include at least one of the following: determining an available beam pair; sending a beam restoration request; and receiving a response message sent by a base station in response to the beam restoration request. The beam restoration request may carry information indicating the available beam pair.

[0156] In one embodiment, the number of RS detection result indications BFI is the number of RS detection result indications BFI within the active time window.

[0157] In one embodiment, see Figure 7 , the initial value of the number of detection opportunities included in the active time window is 3. The first number threshold is threshold 1 (for example, a value of 2); the RS detection result of the first BFD is that no BFI is detected; the RS detection result of the second BFD is that BFI is detected; the RS detection result of the third BFD is that BFI is detected; at this time, the number of detection opportunities included in the current active time window is less than the number for determining whether it is in a beam failure state, and the number of detection opportunities included in the active time window is increased, for example, a fourth detection opportunity is added; during the fourth detection, LBT fails, and the RS detection result of the fourth BFD is that BFI is detected. At this time, because the number of BFIs indicated by the BFD RS detection result is greater than the first number threshold, the terminal will initiate the beam pre-recovery process.

[0158] In one embodiment, see again Figure 7 The second number threshold is a threshold of 2 (for example, 6). After the terminal initiates the beam pre-recovery process, the number of detection opportunities within the active time window continues to increase. The RS detection results of the fifth, sixth, and seventh BFD cycles all indicate BFIs. At this point, because the number of BFIs indicated by the BFD RS detection results is greater than the second number threshold, the terminal performs the beam recovery process, that is, performs beam pair switching.

[0159] In one embodiment, the beam pre-restoration process may include at least one of the following: selecting a beam pair; sending a beam restoration request to a base station; and beam pair switching. Here, the beam restoration request may carry information about the selected beam pair.

[0160] In one embodiment, see Figure 8, the initial value of the number of detection opportunities included in the active time window is 3. The first number threshold is threshold 1 (for example, a value of 2); the RS detection result of the first BFD is that no BFI is detected; the RS detection result of the second BFD is that BFI is detected; the RS detection result of the third BFD is that BFI is detected; at this time, the number of detection opportunities included in the current active time window is less than the number for determining whether it is in a beam failure state, and the number of detection opportunities included in the active time window is increased, for example, a fourth detection opportunity is added; during the fourth detection, LBT fails, and the RS detection result of the fourth BFD is that BFI is detected. At this time, because the number of BFIs indicated by the BFD RS detection result is greater than the first number threshold, the terminal will initiate the beam pre-recovery process.

[0161] In one embodiment, in response to starting the beam pre-restoration process, the number of BFIs indicated by the BFD RS detection result is less than or equal to the second number threshold, and no BFI is currently detected, it is determined to be in the beam restoration state.

[0162] In one embodiment, see again Figure 8 , the second number threshold is threshold 2 (for example, 6); after the terminal initiates the beam pre-recovery process, the number of detection opportunities included in the active time window continues to increase; the fifth and sixth RS detection results both indicate BFI detection; and the seventh RS detection result indicates no BFI detection. At this point, because the beam recovery process has been initiated, the number of BFIs indicated by the BFD RS detection result is no greater than the second number threshold, and no BFI was detected for the seventh time. Therefore, the terminal is determined to be in the beam recovery state and does not need to perform beam recovery, that is, no beam pair switching is required.

[0163] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0164] like Figure 9 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0165] Step 91: In response to the RS detection result indicating that the number of beam failure instances BFI is greater than a first number threshold, store the optional beam pairs in a beam pair resource pool.

[0166] In one embodiment, the terminal presets a resource pool, and the terminal obtains a beam pair from the preset resource pool, wherein the beam pair is used for data transmission between the terminal and the base station.

[0167] In one embodiment, in response to the need to perform beam recovery, the terminal obtains a beam pair from a preset resource pool and uses the beam pair to perform data transmission between the terminal and the base station.

[0168] In one embodiment, a corresponding resource pool is preset for the base station. In response to the terminal storing the optional beam pair in the beam pair resource pool, the terminal sends indication information indicating the beam pair to the base station. After receiving the indication information, the base station stores the beam pair indicated by the indication information in the corresponding preset resource pool of the base station. In response to the need for beam recovery, the base station obtains the beam pair from the resource pool and uses the beam pair for data transmission between the terminal and the base station.

[0169] In one embodiment, the indication information indicates beam pair indexes, and each index corresponds to a group of beam pairs.

[0170] In one embodiment, in response to an RS detection result indicating that the number of BFIs is greater than a second number threshold within the active time window and the base station does not receive indication information sent by the terminal regarding a beam pair selected from a resource pool, the base station determines that the current beam is in a beam recovery state. In this case, the beam pair in the resource pool may be released. Here, releasing the beam pair in the resource pool may include deleting information about the beam pair in the resource pool.

[0171] In one embodiment, in response to the beam pair in the resource pool not being released, the beam pair in the resource pool can only be used for data transmission of the resource pool terminal; in response to the beam pair in the resource pool being released, the released beam can be used for data transmission of other terminals.

[0172] In one embodiment, in response to the RS detection result indicating that the number of BFIs within the active time window is greater than a second number threshold and the base station receives the indication information of the beam pair selected from the resource pool sent by the terminal, the current beam pair is switched to the beam pair selected from the resource pool.

[0173] In one embodiment, in response to switching the current beam pair to the selected beam pair, the beam pair in the resource pool is released.

[0174] In one embodiment, in response to not being determined to be in a beam failure state or before the beam is recovered, the beam in the resource pool is only used for data transmission of the terminal associated with the resource pool.

[0175] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0176] like Figure 10 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0177] Step 101: In response to an RS detection result indicating that the number of beam failure instances BFI is greater than a second number threshold, switching a used beam pair to a beam pair in a beam pair resource pool.

[0178] In one embodiment, in response to the RS detection result indicating that the number of BFIs within the active time window is greater than a second number threshold, indication information of a beam pair selected from the resource pool is sent to the base station, and the current beam pair is switched to the selected beam pair.

[0179] In one embodiment, in response to the RS detection result indicating that the number of BFIs within the active time window is greater than a second number threshold and the base station receives indication information of a beam pair selected from a resource pool sent by the terminal, the current beam pair is switched to the selected beam pair.

[0180] In one embodiment, the terminal sends information indicating the number of BFIs indicated by the RS detection result within the active time window to the base station.

[0181] In one embodiment, in response to switching the used beam pair to a beam pair in the beam pair resource pool, the beam pair in the resource pool is released. Here, releasing the beam pair in the resource pool may be deleting information about the beam pair in the resource pool.

[0182] In one embodiment, in response to not being determined to be in a beam failure state or before the beam is recovered, the beam in the resource pool is only used for data transmission of the terminal associated with the resource pool.

[0183] In one embodiment, in response to an RS detection result indicating that the number of beam failure instances (BFIs) is greater than a first threshold, the selectable beam pairs may be stored in a beam pair resource pool when switching beam pairs. In response to the RS detection result indicating that the number of beam failure instances (BFIs) is greater than a second threshold, the used beam pair may be switched to a beam pair in the beam pair resource pool. This can improve the efficiency of beam pair use by the terminal.

[0184] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0185] like Figure 11 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0186] Step 111: Send indication information carrying a beam pair selection result for switching to the base station; wherein the selected beam pair is a beam pair in the resource pool.

[0187] In one embodiment, the beam pair selection result is determined according to the beam quality of each beam pair in the resource pool.

[0188] In one embodiment, in response to a beam quality of a beam pair in a resource pool being greater than a quality threshold, the beam pair is determined to be a selected beam pair. Here, the selected beam pair is a beam pair for handover. In response to a beam quality of a beam pair in a resource pool being less than a quality threshold, the beam pair is determined not to be a selected beam pair.

[0189] In one embodiment, the beam pair selection result is determined according to the priority of each beam pair in the resource pool.

[0190] In one embodiment, in response to a priority of the beam pair in the resource pool being higher than a priority threshold, the beam pair is determined to be the selected beam pair. In response to a beam quality of the beam pair in the resource pool being lower than a priority threshold, the beam pair is determined not to be the selected beam pair.

[0191] In one embodiment, in response to the base station receiving indication information carrying a beam pair selection result for switching, the base station performs beam switching based on the beam pair for switching indicated by the indication information.

[0192] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0193] like Figure 12 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0194] Step 121: Send pre-recovery indication information to the base station to start the beam pre-recovery process.

[0195] In one embodiment, the pre-recovery indication information may carry information about available beam pairs. Here, the information about available beam pairs may be information about beams used to replace the current beam pair.

[0196] In one embodiment, the information of available beam pairs may be information of beam pairs having a quality greater than a quality threshold. In one embodiment, the information of available beam pairs may also be information of beam pairs having a priority greater than a priority threshold.

[0197] In one embodiment, in response to initiating the beam pre-recovery procedure, pre-recovery indication information for initiating the beam pre-recovery procedure is sent to the base station.

[0198] In one embodiment, after sending pre-recovery indication information for starting the beam pre-recovery process to the base station, a response message for determining to start the beam pre-recovery process sent by the base station is received.

[0199] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0200] like Figure 13 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0201] Step 131: Receive a first sequence on a preset time-frequency domain resource;

[0202] Step 132: Generate a second sequence based on the BFD RS sequence parameters.

[0203] Step 133: Determine whether the base station successfully sends the BFD RS on the preset time-frequency domain resources based on a correlation peak value determined by performing autocorrelation between the second sequence and the first sequence.

[0204] In one embodiment, the above steps are performed before determining the beam recovery operation based on a detection result of a reference signal RS for beam failure detection (BFD) at a detection opportunity within an active time window.

[0205] In one embodiment, the terminal receives configuration information sent by the base station; wherein the configuration information at least indicates preset time-frequency domain resources.

[0206] In one embodiment, the terminal receives configuration information sent by the base station; wherein the configuration information at least indicates a BFDRS sequence parameter.

[0207] In one embodiment, whether the base station successfully sends the BFD RS on the preset time-frequency domain resources is determined according to the size of the correlation peak.

[0208] In one embodiment, in response to the correlation peak being greater than the correlation peak threshold, it is determined that the base station successfully sends the BFD RS on the preset time-frequency domain resources; in response to the correlation peak being less than the correlation peak threshold, it is determined that the base station fails to send the BFD RS on the preset time-frequency domain resources.

[0209] In one embodiment, the RS detection result is determined according to a determination result of whether the BFD RS is successfully sent on the preset time-frequency domain resources.

[0210] In one embodiment, in response to determining that the base station fails to send BFD RS on the preset time-frequency domain resources, it is determined that the RS detection result indicates that the RS detection result is BFI; or, in response to determining that the base station successfully sends BFDRS on the preset time-frequency domain resources, the detection result is determined according to the first layer L1 reference signal received power RSRP.

[0211] In one embodiment, in response to determining a detection result based on a first layer L1 reference signal received power (RSRP), the method further includes: in response to RSRP being less than an RSRP threshold, determining that the RS detection result indicates that the RS detection result is BFI; or, in response to RSRP being greater than the RSRP threshold, determining that the RS detection result indicates that the RS detection result is not BFI. Here, the first layer may be a physical layer.

[0212] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0213] like Figure 14 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0214] Step 141: Receive configuration information;

[0215] The configuration information includes one or more of the following: information on preset time-frequency domain resources and / or information on BFD RS sequence parameters.

[0216] In one embodiment, in response to the terminal establishing a radio resource notification RRC connection with the base station, the terminal receives configuration information sent by the base station.

[0217] In one embodiment, the configuration information is sent by the base station via a random access response message.

[0218] In one embodiment, the terminal sends a request message for obtaining configuration information to the base station; the terminal receives a response message carrying the configuration information and sent by the base station in response to the request message.

[0219] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0220] like Figure 15 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0221] Step 151: In response to the correlation peak being less than the correlation peak threshold, determining that the base station fails to send the BFD RS on the preset time-frequency domain resources;

[0222] or,

[0223] In response to the correlation peak being greater than the correlation peak threshold, it is determined that the base station successfully sends the BFD RS on the preset time-frequency domain resources.

[0224] In one embodiment, the RS detection result is determined according to a determination result of whether the BFD RS is successfully sent on the preset time-frequency domain resources.

[0225] In one embodiment, in response to determining that the base station fails to send BFD RS on the preset time-frequency domain resources, it is determined that the RS detection result indicates that the RS detection result is BFI; or, in response to determining that the base station successfully sends BFDRS on the preset time-frequency domain resources, the detection result is determined according to the first layer L1 reference signal received power RSRP.

[0226] In one embodiment, in response to determining a detection result based on a first layer L1 reference signal received power (RSRP), the method further includes: in response to RSRP being less than an RSRP threshold, determining that the RS detection result indicates that the RS detection result is BFI; or, in response to RSRP being greater than the RSRP threshold, determining that the RS detection result indicates that the RS detection result is not BFI. Here, the first layer may be a physical layer.

[0227] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0228] like Figure 16 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0229] Step 161: In response to determining that the base station fails to send the BFD RS on the preset time-frequency domain resources, determine that the RS detection result indicates that the RS detection result is BFI; or, in response to determining that the base station successfully sends the BFD RS on the preset time-frequency domain resources, determine the detection result according to the first layer L1 reference signal received power RSRP.

[0230] In one embodiment, in response to determining a detection result based on a first layer L1 reference signal received power (RSRP), the method further includes: in response to RSRP being less than an RSRP threshold, determining that the RS detection result indicates that the RS detection result is BFI; or, in response to RSRP being greater than the RSRP threshold, determining that the RS detection result indicates that the RS detection result is not BFI. Here, the first layer may be a physical layer.

[0231] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0232] like Figure 17 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0233] Step 171: In response to RSRP being less than an RSRP threshold, determining that the RS detection result indicates that the RS detection result is BFI; or, in response to RSRP being greater than an RSRP threshold, determining that the RS detection result indicates that the RS detection result is not BFI.

[0234] In one embodiment, in response to determining a detection result based on a first layer L1 reference signal received power (RSRP), the method further includes: in response to RSRP being less than an RSRP threshold, determining that the RS detection result indicates that the RS detection result is BFI; or, in response to RSRP being greater than the RSRP threshold, determining that the RS detection result indicates that the RS detection result is not BFI. Here, the first layer may be a physical layer.

[0235] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0236] like Figure 18 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0237] Step 181 : In response to determining that the RS detection result indicates that the current RS detection is BFI, increase the number of RS detection opportunities.

[0238] In one embodiment, in response to the number of BFIs corresponding to RS detection results at detection opportunities within the active time window being less than the number of times for determining whether beam formation fails, the number of detection opportunities included in the active time window is increased.

[0239] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0240] In order to better understand the embodiments of the present disclosure, the embodiments of the present disclosure are further described below through an exemplary embodiment:

[0241] Example 1:

[0242] like Figure 19 As shown, this embodiment provides a beam recovery method, which is applied to a terminal and includes:

[0243] Step 191: The terminal receives information about preset time-frequency domain resources and / or BFD RS sequence parameters periodically transmitted by the base station. The preset time-frequency domain resources and BFD RS sequence parameters are used to: receive a first sequence on the preset time-frequency domain resources by the terminal; generate a second sequence based on the BFD RS sequence parameters by the terminal; and determine whether the base station successfully transmits the BFD RS on the preset time-frequency domain resources based on a correlation peak determined by autocorrelating the second sequence with the first sequence.

[0244] Step 192: The terminal starts BFD and performs beam measurement.

[0245] Step 193: Obtain the correlation peak value of RS.

[0246] Step 194: Determine whether the RS correlation peak is greater than the correlation peak threshold. If the correlation peak is less than the correlation peak threshold, it is determined that the base station has failed to send the BFD RS on the preset time-frequency domain resources, and step 195 is executed. Alternatively, if the correlation peak is greater than the correlation peak threshold, it is determined that the base station has successfully sent the BFD RS on the preset time-frequency domain resources, and step 203 is executed.

[0247] Step 195: The BFI counter is incremented by 1.

[0248] Step 196: Increase the number of detection opportunities within the active time window.

[0249] Step 197: Determine whether the BFI count value is greater than a second quantity threshold. In response to the BFI count value being greater than the second quantity threshold, execute step 198; otherwise, execute step 199.

[0250] Step 198: Send the selected beam pair information for beam switching to the base station. Execute 202.

[0251] Step 199: Determine whether the BFI count value is greater than a first quantity threshold. In response to the BFI count value being greater than the first quantity threshold, execute step 200; otherwise, execute step 192.

[0252] Step 200: In response to the BFI count value being greater than a first quantity threshold, triggering a beam failure pre-recovery process.

[0253] Step 202: Perform beam recovery. Here, beam recovery includes performing beam switching.

[0254] Step 203: Determine whether the first layer L1 reference signal received power RSRP is greater than the RSRP threshold. In response to RSRP being less than the RSRP threshold, execute step 195.

[0255] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0256] like Figure 20 As shown, this embodiment provides a beam recovery method, which is applied to a base station and includes:

[0257] Step 201: Send BFD RS.

[0258] The BFD RS is used for the terminal to determine a beam recovery operation based on a detection result of the RS for beam failure detection (BFD) at a detection opportunity within the active time window.

[0259] The active time window includes a variable number of detection opportunities. Before beam recovery or before starting the beam pre-recovery process, the number of detection opportunities in the active time window is increased according to the detection result of each RS detection.

[0260] Here, the terminal can be but is not limited to a mobile phone, a wearable device, a vehicle-mounted terminal, a roadside unit (RSU), a smart home terminal, an industrial sensor device, and other terminals.

[0261] In one embodiment, the beam may be a beam pair used for data transmission between the terminal and the base station. Here, the beam pair includes: a receiving beam for the terminal to receive data and a transmitting beam for the base station to transmit a beam.

[0262] Here, a base station can be an access device for a terminal to access a network. The base station can be of various types. For example, a base station of a third-generation mobile communication (3G) network, a base station of a fourth-generation mobile communication (4G) network, a base station of a fifth-generation mobile communication (5G) network, or a base station of any generation of communication system.

[0263] In one embodiment, the BFD RS may be sent periodically.

[0264] In one embodiment, the beam may be a downlink beam. Here, the beam failure detection may be downlink beam failure detection. The beam recovery may be downlink beam recovery.

[0265] In one embodiment, beam recovery includes the process of beam access using available beams.

[0266] In one embodiment, in response to determining beam failure based on RS detection results for beam failure detection (BFD) at a detection opportunity within an active time window, and the terminal has an available beam that can replace the current beam, the terminal performs beam access based on the available beam. If access is successful using the available beam, data can be transmitted between the terminal and the base station using the available beam.

[0267] In some embodiments, beam failure may be caused in response to terminal movement; or, beam failure may be caused in response to network congestion; or, beam failure may be caused in response to terminal rotation.

[0268] In one embodiment, the active time window includes multiple detection opportunities. At each detection opportunity, the terminal performs BFD RS detection and obtains an RS detection result for BFD. Here, the RS detection result for BFD may indicate a beam failure result.

[0269] In one embodiment, an initial number of detection opportunities included in the active time window is preset. For example, the number of detection opportunities included in the preset active time window is 3. Here, configuration information including the indication of the initial number can be received in advance from the base station.

[0270] In one embodiment, whether to increase the number of detection opportunities included in the active time window is determined according to RS detection results at the detection opportunities within the active time window.

[0271] In one embodiment, in response to the number of beam failure instances corresponding to RS detection results at detection opportunities within the active time window being less than the number required to determine whether the beam has failed, it is determined that the number of detection opportunities included in the active time window is increased. Here, since the beam failure instances are insufficient to determine whether the beam has failed, it is necessary to continue increasing the number of detection opportunities included in the active time window and continue performing BFD RS detection to reduce the number of instances in which it is impossible to determine whether the beam has failed due to an insufficient number of beam failure instances. In response to the number of beam failure instances corresponding to RS detection results at detection opportunities within the active time window being greater than or equal to the number required to determine whether the beam has failed, it is determined that the number of detection opportunities included in the active window is not increased. Here, since the beam failure instances are sufficient to determine whether the beam has failed, it is not necessary to continue increasing the number of detection opportunities included in the active time window.

[0272] In one embodiment, n beam failure instances need to be detected to determine whether the beam is in a beam failure state. In response to the number of detection opportunities within the active time window being less than n, the number of detection opportunities included in the active time window can be increased; or, n beam failure instances need to be detected to determine whether the beam has failed. In response to the number of beam failure instances detected at the detection opportunities within the active time window being less than n, the number of detection opportunities included in the active time window can be increased.

[0273] In one embodiment, whether to increase the number of detection opportunities included in the active time window is determined according to the beam recovery result.

[0274] In one embodiment, in response to beam recovery, it is determined not to increase the number of detection opportunities included in the active time window; in response to beam non-recovery, it is determined to increase the number of detection opportunities included in the active time window.

[0275] In one embodiment, whether to increase the number of detection opportunities included in the active time window is determined according to the activation of the beam pre-recovery process.

[0276] In one embodiment, in response to the beam not being recovered and the beam pre-recovery process not being initiated, the number of detection opportunities included in the active time window is increased. In response to the beam pre-recovery process being initiated, the number of detection opportunities included in the active time window is increased until the beam is recovered.

[0277] In one embodiment, when communicating in an unlicensed frequency band, the active time window may correspond to a period of channel occupancy. During this period, a beam failure instance counter is used to count the number of beam failures. Whether beam recovery is required is determined based on the count result of the beam failure instance counter within a predetermined period. Here, a beam failure instance corresponds to one beam failure result.

[0278] In one embodiment, when communicating in an unlicensed frequency band, the active time window may also correspond to a period of non-channel occupancy. During this period, a beam failure instance counter is used to count the number of beam failures. Whether beam recovery is necessary is determined based on the count result of the beam failure instance counter within a predetermined time period. Here, one beam failure instance corresponds to one beam failure result. The non-channel occupancy period may not overlap with, or may partially overlap with, the channel occupancy period.

[0279] Here, whether the beam fails is determined based on the RS detection result for BFD.

[0280] In one embodiment, in response to a beam failure instance counter's count value being greater than a count threshold within a predetermined time period, indicating a beam failure state, a determination is made that beam recovery is necessary. In response to a beam failure instance counter's count value being less than the count threshold within a predetermined time period, indicating no beam failure, a determination is made that beam recovery is not necessary. For example, if the predetermined time period is 3 seconds and the count threshold is 3, then when the beam failure instance counter's count value reaches 3 within 3 seconds, a determination is made that beam recovery is necessary. When the beam failure instance counter's count value within 3 seconds is less than 3, a determination is made that beam recovery is not necessary. In one embodiment, the beam failure instance counter's count value within the predetermined time period is a continuous count value.

[0281] In one embodiment, in response to a need for beam restoration, the beam restoration operation may include initiating a beam pre-restoration process. The beam pre-restoration process may include at least one of the following: determining an available beam pair; sending a beam restoration request; and receiving a response message sent by the base station in response to the beam restoration request.

[0282] In one embodiment, in response to the need for beam recovery, the currently used beam can be switched to another available beam. For example, if the currently used beam is beam A and the quality of beam A is less than a quality threshold, beam recovery is required. In this case, beam A can be switched to any of the available beams B, C, and D.

[0283] In one embodiment, in response to a need for beam recovery, a beam pre-recovery procedure is initiated; and in response to a determination that beam recovery is performed based on RS detection results for BFD at a set number of detection opportunities after the initiation of the beam pre-recovery procedure, the beam recovery procedure does not need to be initiated. For example, if the number is set to three, in response to a need for beam recovery, a beam pre-recovery procedure is initiated; and in response to a determination that beam recovery is performed based on RS detection results for BFD at three detection opportunities after the initiation of the beam pre-recovery procedure, the beam recovery procedure does not need to be initiated.

[0284] In one embodiment, in response to a need for beam recovery, a beam pre-recovery procedure is initiated; in response to a beam failure being determined again based on a detection result of an RS for BFD at a set number of detection opportunities after the initiation of the beam pre-recovery procedure, the beam recovery procedure is initiated. For example, the number is set to three, and in response to a need for beam recovery, the beam pre-recovery procedure is initiated; in response to a beam failure being determined again based on a detection result of an RS for BFD at three detection opportunities after the initiation of the beam pre-recovery procedure, the beam recovery procedure is initiated.

[0285] In one embodiment, the beam restoration process can be based on the results of the beam pre-restoration process. For example, the beam restoration process can be based on the available beams determined by the beam pre-restoration process. In this way, because the beam pre-restoration process is performed before beam restoration, beam restoration can be performed quickly when needed, thereby improving resource utilization efficiency.

[0286] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0287] like Figure 21 As shown, this embodiment provides a beam recovery method, which is applied to a base station and includes:

[0288] Step 211: Receive pre-recovery indication information for starting a beam pre-recovery process sent by the terminal.

[0289] In one embodiment, the pre-recovery indication information may carry information about available beam pairs. Here, the information about available beam pairs may be information about beams used to replace the current beam pair.

[0290] In one embodiment, the information of available beam pairs may be information of beam pairs having a quality greater than a quality threshold. In one embodiment, the information of available beam pairs may also be information of beam pairs having a priority greater than a priority threshold.

[0291] In one embodiment, in response to the terminal initiating the beam pre-recovery process, pre-recovery indication information for initiating the beam pre-recovery process is sent to the base station.

[0292] In one embodiment, after receiving the pre-recovery indication information for starting the beam pre-recovery process, the base station sends a response message to the terminal to confirm starting the beam pre-recovery process.

[0293] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0294] like Figure 22 As shown, this embodiment provides a beam recovery method, which is applied to a base station and includes:

[0295] Step 221: In response to receiving a pre-recovery instruction sent by the terminal to start the beam pre-recovery process, start the beam pre-recovery process.

[0296] In one embodiment, the beam pre-restoration process of the terminal may include at least one of the following: determining an available beam pair; sending a beam restoration request; and receiving a response message sent by the base station according to the beam restoration request.

[0297] In one embodiment, the base station initiates a beam pre-restoration process by receiving a beam restoration request from a terminal and sending a response message to the terminal in response to the beam restoration request. Here, the beam restoration request carries information about the beam pair determined by the terminal.

[0298] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0299] like Figure 23 As shown, this embodiment provides a beam recovery method, which is applied to a base station and includes:

[0300] Step 231: Receive indication information sent by the terminal and carrying a beam pair selection result for switching; wherein the selected beam pair is a beam pair in a resource pool.

[0301] In one embodiment, the beam pair selection result is determined according to the beam quality of each beam pair in the resource pool.

[0302] In one embodiment, in response to a beam quality of a beam pair in a resource pool being greater than a quality threshold, the beam pair is determined to be a selected beam pair. Here, the selected beam pair is a beam pair for handover. In response to a beam quality of a beam pair in a resource pool being less than a quality threshold, the beam pair is determined not to be a selected beam pair.

[0303] In one embodiment, the beam pair selection result is determined according to the priority of each beam pair in the resource pool.

[0304] In one embodiment, in response to a priority of the beam pair in the resource pool being higher than a priority threshold, the beam pair is determined to be the selected beam pair. In response to a beam quality of the beam pair in the resource pool being lower than a priority threshold, the beam pair is determined not to be the selected beam pair.

[0305] In one embodiment, in response to the base station receiving indication information carrying a beam pair selection result for switching, the base station performs beam switching based on the beam pair for switching indicated by the indication information.

[0306] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0307] like Figure 24 As shown, this embodiment provides a beam recovery method, which is applied to a base station and includes:

[0308] Step 241: In response to the number of transmitted RSs being greater than a second number threshold and the indication information carrying the beam pair selection result for switching sent by the terminal not being received, release the beam pairs stored in the beam pair resource pool.

[0309] In one embodiment, the base station presets a resource pool, and the base station obtains a beam pair from the preset resource pool for data transmission between the terminal and the base station.

[0310] In one embodiment, in response to the need to perform beam recovery, the base station obtains a beam pair from a preset resource pool and uses the beam pair to perform data transmission between the terminal and the base station.

[0311] In one embodiment, in response to the terminal storing the optional beam pair in the beam pair resource pool, indication information indicating the beam pair is sent to the base station; after receiving the indication information, the base station stores the beam pair indicated by the indication information in the corresponding preset resource pool of the base station; in response to the need for beam recovery, the base station obtains the beam pair from the resource pool and uses the beam pair to transmit data between the terminal and the base station.

[0312] In one embodiment, the indication information indicates beam pair indexes, and each index corresponds to a group of beam pairs.

[0313] In one embodiment, in response to an RS detection result indicating that the number of BFIs is greater than a second threshold within an active time window and no indication information indicating a beam pair selected from a resource pool is received from a terminal, it is determined that the current beam is in a beam recovery state. In this case, the beam pair in the resource pool may be released. Here, releasing the beam pair in the resource pool may include deleting information about the beam pair in the resource pool.

[0314] In one embodiment, in response to the beam pair in the resource pool not being released, the beam pair in the resource pool can only be used for data transmission of the resource pool terminals; in response to the beam pair in the resource pool being released, the released beam can be used for data transmission of all terminals.

[0315] In one embodiment, in response to the RS detection result indicating that the number of BFIs is greater than a second number threshold within the active time window and receiving indication information of a beam pair selected from a resource pool sent by the terminal, the current beam pair is switched to the selected beam pair.

[0316] In one embodiment, in response to switching the current beam pair to the selected beam pair, the beam pair in the resource pool is released.

[0317] In one embodiment, in response to not being determined to be in a beam failure state or before the beam is recovered, the beam in the resource pool is only used for transmission of the terminal associated with the resource pool.

[0318] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0319] like Figure 25 As shown, this embodiment provides a beam recovery method, which is applied to a base station and includes:

[0320] Step 251: In response to the number of transmitted RSs being greater than a second number threshold and receiving indication information sent by the terminal carrying a beam pair selection result for switching, the used beam is switched to the selected beam indicated by the switching result.

[0321] In one embodiment, the beam pair selection result is determined according to the beam quality of each beam pair in the resource pool.

[0322] In one embodiment, in response to a beam quality of a beam pair in a resource pool being greater than a quality threshold, the terminal determines that the beam pair is a selected beam pair. Here, the selected beam pair is a beam pair for handover. In response to a beam quality of a beam pair in a resource pool being less than a quality threshold, the terminal determines that the beam pair is not a selected beam pair.

[0323] In one embodiment, the beam pair selection result is determined according to the priority of each beam pair in the resource pool.

[0324] In one embodiment, in response to a priority of a beam pair in the resource pool being higher than a priority threshold, the terminal determines that the beam pair is a selected beam pair. In response to a beam quality of a beam pair in the resource pool being lower than a priority threshold, the terminal determines that the beam pair is not a selected beam pair.

[0325] In one embodiment, in response to the base station receiving indication information carrying a beam pair selection result for switching, the base station performs beam switching based on the beam pair for switching indicated by the indication information.

[0326] like Figure 26 As shown, an embodiment of the present disclosure provides a beam recovery device, which is applied to a terminal, and includes a determination module 261; wherein,

[0327] The determining module 261 is configured to: determine a beam recovery operation according to a detection result of an RS for beam failure detection (BFD) at a detection opportunity within an active time window;

[0328] The active time window includes a variable number of detection opportunities. Before beam recovery or before starting the beam pre-recovery process, the detection opportunities in the active time window are increased according to the detection results of each RS detection.

[0329] It should be noted that those skilled in the art will understand that the method provided in the embodiments of the present disclosure may be executed alone or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

[0330] like Figure 27 As shown, an embodiment of the present disclosure provides a beam recovery device, which is applied to a base station and includes a sending module 271; wherein,

[0331] A sending module 271 is configured to send a BFD RS;

[0332] The BFD RS is used for the terminal to determine a beam recovery operation based on a detection result of the RS for beam failure detection (BFD) at a detection opportunity within the active time window.

[0333] The active time window includes a variable number of detection opportunities. Before beam recovery or before starting the beam pre-recovery process, the detection opportunities in the active time window are increased according to the detection results of each RS detection.

[0334] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0335] An embodiment of the present disclosure provides a communication device, the communication device including:

[0336] processor;

[0337] a memory for storing processor-executable instructions;

[0338] The processor is configured to implement the method applied to any embodiment of the present disclosure when running the executable instructions.

[0339] The processor may include various types of storage media, which are non-temporary computer storage media that can continue to memorize information stored thereon after the communication device loses power.

[0340] The processor may be connected to the memory via a bus or the like to read the executable program stored in the memory.

[0341] An embodiment of the present disclosure further provides a computer storage medium, wherein the computer storage medium stores a computer executable program, and when the executable program is executed by a processor, the method of any embodiment of the present disclosure is implemented.

[0342] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0343] like Figure 28 As shown, an embodiment of the present disclosure provides a structure of a terminal.

[0344] Reference Figure 28 The terminal 800 shown in this embodiment provides a terminal 800, which can be a mobile phone, a computer, a digital broadcast terminal, a message sending and receiving device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0345] Reference Figure 28 , terminal 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0346] The processing component 802 generally controls the overall operation of the terminal 800, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 802 may include one or more modules to facilitate interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

[0347] The memory 804 is configured to store various types of data to support operations on the terminal 800. Examples of such data include instructions for any application or method operating on the terminal 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0348] Power supply component 806 provides power to various components of terminal 800. Power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to terminal 800.

[0349] The multimedia component 808 includes a screen that provides an output interface between the terminal 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the terminal 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0350] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), which is configured to receive external audio signals when the terminal 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0351] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0352] The sensor assembly 814 includes one or more sensors for providing various aspects of the terminal 800's status assessment. For example, the sensor assembly 814 can detect the open / closed state of the terminal 800, the relative positioning of components, such as the display and keypad of the terminal 800. The sensor assembly 814 can also detect changes in the position of the terminal 800 or a component of the terminal 800, the presence or absence of user contact with the terminal 800, the orientation or acceleration / deceleration of the terminal 800, and temperature changes of the terminal 800. The sensor assembly 814 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 can also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0353] The communication component 816 is configured to facilitate wired or wireless communication between the terminal 800 and other devices. The terminal 800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0354] In an exemplary embodiment, the terminal 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.

[0355] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, which can be executed by the processor 820 of the terminal 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0356] like Figure 29 As shown, an embodiment of the present disclosure shows a structure of a base station. For example, the base station 900 can be provided as a network side device. Figure 29 Base station 900 includes a processing component 922, which further includes one or more processors, and memory resources represented by memory 932 for storing instructions executable by processing component 922, such as applications. The applications stored in memory 932 may include one or more modules, each corresponding to a set of instructions. In addition, processing component 922 is configured to execute instructions to perform any of the aforementioned methods applied to the base station.

[0357] The base station 900 may also include a power supply component 926 configured to perform power management for the base station 900, a wired or wireless network interface 950 configured to connect the base station 900 to a network, and an input / output (I / O) interface 958. The base station 900 may operate based on an operating system stored in the memory 932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or the like.

[0358] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0359] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A beam recovery method, wherein: Applied to a terminal, the method includes: Determine a beam recovery operation based on a detection result of a reference signal (RS) for beam failure detection (BFD) at a detection opportunity within the active time window; The active time window includes a variable number of detection opportunities; before beam recovery or before starting the beam pre-recovery process, the number of detection opportunities in the active time window is increased according to the detection result of each RS detection.

2. The method according to claim 1, wherein The operation of determining beam recovery according to the RS detection result for BFD at the detection opportunity within the active time window includes: In response to the RS detection result indicating that the number of beam failure instances BFI is greater than a first number threshold, starting a beam pre-recovery process; and / or, In response to the RS detection result indicating that the number of beam failure instances BFI is greater than a second number threshold, beam pair switching is performed; wherein the second number threshold is greater than the first number threshold.

3. The method according to claim 2, wherein: The starting beam pre-recovery process further includes: In response to the RS detection result indicating that the number of beam failure instances BFI is greater than a first number threshold, the optional beam pairs are stored in a beam pair resource pool.

4. The method according to claim 2, wherein: The switching of the beam pair in response to the RS detection result indicating that the number of beam failure instances BFI is greater than a second number threshold comprises: In response to the RS detection result indicating that the number of beam failure instances BFI is greater than a second number threshold, the used beam pair is switched to a beam pair in a beam pair resource pool.

5. The method according to claim 4, wherein In response to performing beam pair switching, the method further includes: Sending indication information carrying a beam pair selection result for switching to the base station; wherein the selected beam pair is a beam pair in the resource pool.

6. The method according to claim 2, wherein: The starting beam pre-recovery process includes: Send pre-recovery indication information to the base station to start the beam pre-recovery process.

7. The method according to claim 2, wherein: Before the operation of determining beam recovery according to a detection result of a reference signal RS for beam failure detection (BFD) at a detection opportunity within the active time window, the method further includes: Receiving a first sequence on a preset time-frequency domain resource; A second sequence generated based on BFD RS sequence parameters; It is determined whether the base station successfully sends the BFD RS on the preset time-frequency domain resources according to a correlation peak value determined by performing autocorrelation between the second sequence and the first sequence.

8. The method according to claim 7, wherein: The method further comprises: Receive configuration information; The configuration information includes one or more of the following: information about the preset time-frequency domain resources and / or information about the BFDRS sequence parameters.

9. The method according to claim 7, wherein: The determining, based on a correlation peak value determined by autocorrelating the second sequence with the first sequence, whether the BFD RS is successfully sent on the preset time-frequency domain resource includes: In response to the correlation peak being less than the correlation peak threshold, determining that the base station fails to send the BFD RS on the preset time-frequency domain resources; or, In response to the correlation peak being greater than the correlation peak threshold, it is determined that the base station successfully sends the BFD RS on the preset time-frequency domain resources.

10. The method according to claim 9, wherein: The method further comprises: In response to determining that the base station fails to send the BFD RS on the preset time-frequency domain resources, determining that the RS detection result indicates that the RS detection result is BFI; or, In response to determining that the base station successfully sends the BFD RS on the preset time-frequency domain resources, the detection result is determined according to the first layer L1 reference signal received power RSRP.

11. The method according to claim 10, wherein: The determining the detection result according to the first layer L1 reference signal received power RSRP includes: In response to the RSRP being less than an RSRP threshold, determining that the RS detection result indicates that the RS detection result is BFI; or, In response to the RSRP being greater than an RSRP threshold, determining that the RS detection result indicates that the RS detection result is not BFI.

12. The method according to claim 11, wherein The method further comprises: In response to determining that the RS detection result indicates that the current RS detection is BFI, the number of the RS detection opportunities is increased.

13. A beam recovery method, wherein: Applied to a base station, the method includes: Send BFD RS; The BFD RS is used for the terminal to determine a beam recovery operation based on a detection result of the RS for beam failure detection (BFD) at a detection opportunity within the active time window; The active time window includes a variable number of detection opportunities; before beam recovery or before starting the beam pre-recovery process, the number of detection opportunities in the active time window is increased according to the detection result of each RS detection.

14. The method according to claim 13, wherein The method further comprises: The receiving terminal sends pre-recovery indication information for starting the beam pre-recovery process.

15. The method according to claim 14, wherein The method further comprises: In response to receiving a pre-recovery indication sent by the terminal to start the beam pre-recovery process, the beam pre-recovery process is started.

16. The method according to claim 13, wherein: The method further comprises: The receiving terminal sends indication information carrying the beam pair selection result for switching; wherein the selected beam pair is a beam pair in the resource pool.

17. The method according to claim 13, wherein: The method further comprises: In response to the number of the RSs being sent being greater than a second number threshold and the indication information sent by the terminal carrying the beam pair selection result for switching being not received, the beam pairs stored in the beam pair resource pool are released.

18. The method according to claim 13, wherein The method further comprises: In response to the number of sent RSs being greater than a second number threshold and receiving indication information sent by the terminal carrying a beam pair selection result for switching, the used beam pair is switched to the beam pair for switching indicated by the indication information.

19. A beam recovery device, wherein: Applied to a terminal, the device includes a determination module; wherein, The determining module is configured to: determine a beam recovery operation according to a detection result of an RS for beam failure detection (BFD) at a detection opportunity within an active time window; The active time window includes a variable number of detection opportunities; before beam recovery or before starting the beam pre-recovery process, the detection opportunities within the active time window are increased according to the detection results of each RS detection.

20. A beam recovery device, wherein: Applied to a base station, the device includes a sending module; wherein, The sending module is configured to send a BFD RS; The BFD RS is used for the terminal to determine a beam recovery operation based on a detection result of the RS for beam failure detection (BFD) at a detection opportunity within the active time window; The active time window includes a variable number of detection opportunities; before beam recovery or before starting the beam pre-recovery process, the detection opportunities within the active time window are increased according to the detection results of each RS detection.

21. A communication device, wherein: include: antenna; Memory; The processor is connected to the antenna and the memory respectively, and is configured to control the transmission and reception of the antenna by executing computer-executable instructions stored on the memory, and can implement the method provided in any one of claims 1 to 12 or claims 13 to claim 18.

22. A computer storage medium storing computer-executable instructions, wherein the computer-executable instructions are capable of implementing the method provided in any one of claims 1 to 12 or claims 13 to 18 after being executed by a processor.

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