Beam failure recovery method, device and equipment

Abstract

The invention discloses a beam failure recovery method, device and equipment. A terminal acquires configuration information sent by a base station; wherein the configuration information comprises candidate beam reference signal configuration information; and sending candidate beam reference signal information satisfying the candidate beam reference signal configuration information to the base station. By adopting the technical means of the invention, the candidate beam reference signal information is reported through the terminal, the problem of beam failure recovery is effectively solved, and the communication quality of the terminal and the base station is improved.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and in particular, to a beam failure recovery method, apparatus, and device. Background Art

[0002] In a 5G millimeter wave system, due to relatively severe channel fluctuations, beam misalignment may occur between a base station and a user. Beam failure recovery can help the base station or the user adjust the current failed beam to an available beam according to beam measurement results, thereby avoiding frequent radio link failures caused by beam misalignment.

[0003] In the prior art, the beam failure recovery method is as follows: The base station configures a candidate beam set for beam failure recovery for a user terminal. The terminal selects a beam with a reference signal received power higher than a certain threshold from the set, and uses the preamble index associated with the reference signal of the beam to initiate non-competitive random access.

[0004] However, the candidate beam set for existing beam failure recovery is configured by the base station. When the user terminal moves at a high speed, the candidate beam set configured by the base station does not always include the future top K beams. Therefore, it is difficult to completely solve the beam failure recovery problem. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide a beam failure recovery method, apparatus, and device, which configure and report candidate beam information through a terminal, effectively solve the beam failure recovery problem, and improve the communication quality between the terminal and the base station.

[0006] To achieve the above purpose, the embodiments of the present invention provide a beam failure recovery method, which is applied to the terminal side. The method includes:

[0007] Obtain configuration information sent by the base station; wherein, the configuration information includes candidate beam reference signal configuration information;

[0008] Send candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station.

[0009] As an improvement of the above solution, the configuration information further includes a trigger condition for reporting the candidate beam reference signal;

[0010] Then, the sending the candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station is:

[0011] When it is detected that the trigger condition for reporting the candidate beam reference signal is met, send the candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station.

[0012] As an improvement of the above solution, the candidate beam reference signal configuration information at least includes one of the following:

[0013] The number of candidate beam reference signals;

[0014] The reference signal received power threshold.

[0015] As a preferred implementation manner, the candidate beam reference signal information includes a candidate beam reference signal set; the candidate beam reference signal set includes a number of candidate beam reference signal IDs.

[0016] As an improvement of the above solution, after sending the candidate beam reference signal information to the base station, the method further includes:

[0017] When the first communication information returned by the base station is received within the first preset time, or the first communication information returned by the base station is not received, initiate non-competitive random access using the non-competitive random access preamble associated with the target candidate beam reference signal in the candidate beam reference signal set; wherein each candidate beam reference signal in the candidate beam reference signal set is associated with a non-competitive random access preamble.

[0018] As an improvement of the above solution, the first communication information is DCI information.

[0019] As an improvement of the above solution, the code point of each candidate beam reference signal in the candidate beam reference signal set is associated with the non-competitive random access preamble, and each candidate beam reference signal is mapped to a different code point according to the candidate beam reference signal ID information or the reporting order of the candidate beam reference signal.

[0020] As an improvement of the above solution, the association relationship between the code point of each candidate beam reference signal and the non-competitive random access preamble is configured by the base station through RRC signaling.

[0021] As an improvement of the above solution, after sending the candidate beam reference signal information to the base station, the method further includes:

[0022] When the second communication information returned by the base station is received within the first preset time, re-report the candidate beam reference signal set;

[0023] When the number of times of the re-reporting reaches the preset number threshold, initiate non-competitive random access using the non-competitive random access preamble associated with the target candidate beam reference signal in the preset original candidate beam reference signal set; wherein each original candidate beam reference signal in the original candidate beam reference signal set is associated with a non-competitive random access preamble.

[0024] As an improvement of the above solution, the second communication information is DCI information.

[0025] As another preferred embodiment, the candidate beam reference signal information includes a target candidate beam reference signal ID and / or a reference signal received power.

[0026] As an improvement of the above solution, after sending the candidate beam reference signal information to the base station, the method further includes:

[0027] When the third communication information returned by the base station is received within a second preset time, or the third communication information returned by the base station is not received, establish a communication connection between the terminal and the base station using the target candidate beam reference signal;

[0028] When the fourth communication information returned by the base station is received within the second preset time, re-report the target candidate beam reference signal ID.

[0029] As an improvement of the above solution, the third communication information or the fourth communication information is DCI information.

[0030] The embodiment of the present invention further provides another beam failure recovery method, which is applied to the base station side, and the method includes:

[0031] Send configuration information to the terminal; wherein, the configuration information includes candidate beam reference signal configuration information;

[0032] Receive the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information.

[0033] As a preferred embodiment, the candidate beam reference signal information includes a candidate beam reference signal set; the candidate beam reference signal set includes several candidate beam reference signal IDs.

[0034] As an improvement of the above solution, after receiving the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information, the method further includes:

[0035] Send the first communication information to the terminal; the first communication information is DCI information.

[0036] As an improvement of the above solution, after receiving the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information, the method further includes:

[0037] Associate a non-competitive random preamble with the code point of each candidate beam reference signal in the candidate beam reference signal set;

[0038] Map to different code points according to the candidate beam reference signal ID information of each candidate beam reference signal or the reporting order of the candidate beam reference signal.

[0039] As an improvement to the above solution, the association relationship between the code point of each candidate beam reference signal and the non-competitive random access preamble is configured by the base station through RRC signaling.

[0040] As an improvement to the above solution, after receiving the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information, the method further includes:

[0041] Send second communication information to the terminal and receive the candidate beam reference signal set re-reported by the terminal; the second communication information is DCI information;

[0042] When the number of times of sending the second communication information reaches a preset number threshold, associate a non-competitive random preamble with the code point of each candidate beam reference signal in the preset original candidate beam reference signal set.

[0043] As another preferred embodiment, the candidate beam reference signal information includes a target candidate beam reference signal ID and / or a reference signal received power.

[0044] As an improvement to the above solution, after receiving the candidate beam reference signal information sent by the terminal, the method further includes:

[0045] When it is confirmed to establish a communication connection between the terminal and the base station using the target candidate beam reference signal, send third communication information to the terminal; the third communication information is DCI information.

[0046] As an improvement to the above solution, after receiving the candidate beam reference signal information sent by the terminal, the method further includes:

[0047] Send fourth communication information to the terminal and receive the target candidate beam reference signal ID re-reported by the terminal; the fourth communication information is DCI information.

[0048] An embodiment of the present invention further provides a beam failure recovery device, which is applied to the terminal side. The device includes:

[0049] A configuration information acquisition module, configured to acquire configuration information sent by the base station; wherein, the configuration information includes upper candidate beam reference signal configuration information;

[0050] A beam information sending module, configured to send candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station.

[0051] An embodiment of the present invention further provides a beam failure recovery device, which is applied to the base station side. The device includes:

[0052] A configuration information sending module, configured to send configuration information to the terminal; wherein, the configuration information includes candidate beam reference signal configuration information;

[0053] A beam information receiving module, configured to receive the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information.

[0054] An embodiment of the present invention further provides a beam failure recovery device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the beam failure recovery method described in any one of the above is implemented.

[0055] Compared with the prior art, for the beam failure recovery method, device, and equipment disclosed in the present invention, the terminal side obtains the configuration information sent by the base station; wherein, the configuration information includes candidate beam reference signal configuration information; and sends candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station for establishing a communication connection between the terminal and the base station. By using the technical means of the embodiment of the present invention, the time-domain beam prediction accuracy of the terminal is relatively high. By using the terminal to determine the target candidate beam for beam failure recovery based on prediction, the probability that a new beam predicted in the future belongs to the top K beams can be increased, effectively solving the problem of beam failure recovery and improving the communication quality between the terminal and the base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a schematic flow chart of a beam failure recovery method provided by an embodiment of the present invention;

[0057] Figure 2 is a schematic diagram of the principle of AI time-domain beam prediction in an embodiment of the present invention;

[0058] Figure 3 is a schematic diagram of the failure of the terminal to report a candidate beam set in an embodiment of the present invention;

[0059] Figure 4 is a schematic flow chart of another beam failure recovery method provided by an embodiment of the present invention;

[0060] Figure 5 is a schematic structural diagram of a beam failure recovery device provided by an embodiment of the present invention;

[0061] Figure 6 It is a schematic structural diagram of another beam failure recovery device provided by an embodiment of the present invention;

[0062] Figure 7 It is a schematic structural diagram of a beam failure recovery device provided by an embodiment of the present invention. Specific embodiments

[0063] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0064] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0065] The terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0066] See Figure 1 , which is a schematic flow chart of a beam failure recovery method provided by an embodiment of the present invention. An embodiment of the present invention provides a beam failure recovery method, which is executed on the terminal side. The method includes steps S11 to S12:

[0067] S11. Obtain the configuration information sent by the base station; wherein, the configuration information includes candidate beam reference signal configuration information;

[0068] S12. Send candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station.

[0069] In an embodiment of the present invention, to solve the problem in the prior art that when beam failure occurs, configuring a candidate beam reference signal set by a base station easily leads to inaccurate prediction, in the embodiment of the present invention, the base station is used to configure candidate beam reference signal configuration information and send it to a terminal. The terminal generates candidate beam reference signal information according to the candidate beam reference signal configuration information configured by the base station and reports it to the base station, thereby realizing the communication connection between the terminal and the base station, that is, realizing beam recovery.

[0070] In another case, the configuration information further includes a trigger condition for reporting a candidate beam reference signal;

[0071] Then, sending the candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station is:

[0072] When it is detected that the trigger condition for reporting the candidate beam reference signal is met, send the candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station.

[0073] Preferably, the candidate beam reference signal configuration information includes at least one of the following:

[0074] The number of candidate beam reference signals;

[0075] The selection condition of the candidate beam reference signal.

[0076] Preferably, the candidate beam reference signal configuration information includes the number of candidate beam reference signals and the selection condition of the candidate beam reference signal; then, when it is detected that the trigger condition for reporting the candidate beam reference signal is met, sending the candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station includes:

[0077] S121. When it is detected that the trigger condition for reporting the candidate beam reference signal is met, predict candidate beam reference signals that meet the candidate beam reference signal selection condition and the number of candidate beam reference signals, and generate a candidate beam reference signal set;

[0078] S122. Generate candidate beam reference signal information according to the candidate beam reference signal set;

[0079] S123. Send the candidate beam reference signal information to the base station.

[0080] In an embodiment of the present invention, the candidate beam reference signal set is mainly determined by beam prediction on the terminal side.

[0081] First, the terminal obtains the configuration information configured by the base station. The configuration information includes: the triggering condition for reporting candidate beam reference signals, the number of candidate beam reference signals, and the selection condition for candidate beam reference signals. Optionally, the base station configures the configuration information through high-layer RRC (Radio Resource Control) signaling. Among them, the triggering condition for reporting candidate beam reference signals refers to the event that confirms the triggering of beam failure recovery after beam failure; the number of candidate beam reference signals refers to the number N of candidate beam reference signals in the candidate beam reference signal set predicted by the terminal and reported to the base station; the selection condition for candidate beam reference signals refers to the pre-set condition for satisfying being a candidate beam reference signal, and the selection condition for candidate beam reference signals includes a reference signal receiving power threshold.

[0082] Preferably, the selection condition for candidate beam reference signals is: a beam with a reference signal receiving power (RSRP, Reference Signal Receiving Power) higher than the reference signal receiving power threshold, or the first K beams with the highest reference signal receiving powers, where K≥1. That is, within a preset prediction time period T in the future, it is predicted that the reference signal receiving power satisfies being higher than the reference signal receiving power threshold Q in_LR Or a beam with a relatively high ranking in terms of reference signal receiving power.

[0083] Preferably, the triggering condition for reporting candidate beam reference signals is: the block error rate (BLER) of the beam failure detection reference signal for M times is less than a preset threshold.

[0084] It should be noted that the beam failure detection step is: the physical layer measures the BLER of the Physical Downlink Control Channel (PDCCH) based on the beam failure detection reference signal (BFD-RS) set When the BLER of all configured BFD-RSs is worse than the configured threshold Q out_LR it indicates a beam failure instance indication to the MAC layer; if the number of beam failure instance indications received by the MAC layer is greater than or equal to the configured threshold before the expiration of the configured timer (beamFailureDetectionTimer), it is considered that a beam failure has occurred.

[0085] Further, it is assumed that the reference signals (RS) of all beams between the base station and the terminal have been configured through high-layer RRC signaling and are transmitted periodically. After the terminal detects the triggering condition for reporting the candidate beam reference signal through measurement, the terminal performs beam prediction based on the beam prediction method, and obtains N beams that meet the candidate beam reference signal selection condition as candidate beam reference signals according to the candidate beam reference signal selection condition and the number N of candidate beam reference signals, and generates a candidate beam reference signal set.

[0086] As an alternative implementation, in step S121, predicting the candidate beam reference signals that meet the candidate beam reference signal selection condition and the number of candidate beam reference signals, and generating a candidate beam reference signal set includes steps S1211 to S1214:

[0087] S1211. Obtain the beams predicted at each prediction moment within the preset prediction time period, and use the beams with the reference signal received power higher than the reference signal received power threshold among the predicted beams as the first optional beams;

[0088] S1212. Use the first K first optional beams among the first optional beams at each prediction moment as the second optional beams; where K≥1;

[0089] S1213. When the sum of the second optional beams at all the prediction moments is greater than or equal to the number of candidate beam reference signals, obtain the first N second optional beams as candidate beam reference signals according to the reference signal received power magnitude, and generate the candidate beam reference signal set according to the candidate beam reference signal ID; where N is the number of candidate beam reference signals;

[0090] S1214. When the sum of the second optional beams at all the prediction moments is less than the number of candidate beam reference signals, use all the second optional beams as candidate beam reference signals, and obtain the first optional beams with the top ranking in the remaining first optional beams according to the reference signal received power magnitude as candidate beam reference signals until the number of candidate beam reference signals is equal to the number of candidate beam reference signals, and generate the candidate beam reference signal set according to the candidate beam reference signal ID.

[0091] Specifically, refer to Figure 2, which is a schematic diagram of the principle of AI time-domain beam prediction in the embodiments of the present invention. The embodiments of the present invention adopt a beam prediction method based on AI time domain. R18 has established a project for wireless AI, and a typical use case of AI beam management is time-domain beam prediction. By measuring the layer 1-reference signal received power (L1-RSRP) of some beam pairs (setB) at the past n1 moments, predict the L1-RSRP of all beam pairs (setA) at the next n2 moments and select the optimal beam to reduce the beam measurement overhead of the terminal. The simulation results show that the AI time-domain beam prediction can achieve a high beam prediction accuracy rate.

[0092] The implementation method of AI-based time-domain beam prediction is to first train based on a large dataset. For example, the dataset contains millions of samples, and each sample contains the RSRP of all beam pairs (setA) at several moments. First, for beam pair prediction, during training, the RSRP of a small number of beam pairs (setB) at n1 moments is used as the input of the AI model (usually a neural network), and the RSRP of all beam pairs at n2 moments is used as the label of the output of the AI model. The parameters in the AI model are continuously updated through the gradient descent algorithm until the error (which can be measured by NMSE) between the output of the AI model and the label is less than the threshold. At this time, the model converges and has good prediction ability. Second, for transmit beam prediction, according to a certain receive beam hypothesis, during training, the RSRP of a small number of transmit beams at n1 moments is used as the input of the AI model, and the RSRP of all transmit beams at n2 moments is used as the label of the output of the AI model. The parameters in the AI model are continuously updated through the gradient descent algorithm until the error between the output of the AI model and the label is less than the threshold.

[0093] In the embodiments of the present invention, through beam prediction based on AI time domain, the beams at n prediction moments within a preset prediction time period T in the future are predicted, and the number of beams predicted at each prediction moment is greater than or equal to 1. According to the candidate beam reference signal selection condition, determine the beams in the beams predicted at each prediction moment whose reference signal received power satisfies RSRP > Q in_LR as the first optional beams. Then, take the top K beams among the first optional beams at each prediction moment as the second optional beams and put them into the candidate beam reference signal set. If the number of beams in the set is greater than N, delete the beams with smaller RSRP from the set to generate the final candidate beam reference signal set. If the number of beams in the set is less than N, sequentially obtain the remaining first optional beams in descending order of RSRP and put them into the candidate beam reference signal set until the number of beams in the candidate beam reference signal set is equal to N to generate the final candidate beam reference signal set.

[0094] Understandably, the above method for generating the candidate beam reference signal set is only an example. In actual application, other means can be used to generate a candidate beam reference signal set that meets the candidate beam reference signal selection conditions and the number of candidate beam reference signals, which will not affect the beneficial effects achieved by the present invention.

[0095] Finally, after the terminal predicts the candidate beam reference signal set, the candidate beam reference signal information can be generated based on the candidate beam reference signal set and reported to the base station, so as to determine the target candidate beam reference signal for establishing the communication connection between the terminal and the base station. Among them, the target candidate beam reference signal is a new beam that can restore the communication connection between the base station and the terminal.

[0096] It should be noted that after the candidate beam reference signal set is predicted on the terminal side, the means for determining the target candidate beam reference signal according to the candidate beam reference signal set for beam recovery to reconnect can refer to the beam recovery means in the prior art, and will not be specifically limited here.

[0097] As a preferred embodiment, the embodiment of the present invention is further implemented on the basis of the above embodiment. After step S12, the method further includes step S13:

[0098] S13. Establish a communication connection between the user terminal and the base station according to the candidate beam reference signal information.

[0099] By using the technical means of the embodiment of the present invention, since the time-domain beam prediction accuracy of the terminal is relatively high, and the terminal is used to determine the target candidate beam reference signal for beam failure recovery based on prediction, the probability that the newly predicted beam in the future belongs to the top K beams can be increased, the problem of beam failure recovery can be effectively solved, and the communication quality between the terminal and the base station can be improved.

[0100] Furthermore, the embodiment of the present invention further optimizes the means for beam recovery to reconnect according to the candidate beam reference signal information.

[0101] In a preferred embodiment, the candidate beam reference signal information includes the candidate beam reference signal set, that is, after the terminal predicts and generates the candidate beam reference signal set, the candidate beam reference signal set is reported to the base station.

[0102] Then step S13 specifically includes steps S1311 to S1315:

[0103] S1311. Determine whether the base station successfully receives the candidate beam reference signal set;

[0104] S1312. When the base station successfully receives the candidate beam reference signal set, determine a target candidate beam reference signal in the candidate beam reference signal set;

[0105] S1313. When the base station fails to receive the candidate beam reference signal set, re-report the candidate beam reference signal set;

[0106] S1314. When the number of times of the re-reporting reaches a preset number threshold, determine a target candidate beam reference signal in a preset original candidate beam reference signal set;

[0107] S1315. Initiate non-competitive random access using the non-competitive random access preamble associated with the target candidate beam reference signal, so that after successful access, the terminal and the base station communicate through the target candidate beam reference signal.

[0108] Wherein, each candidate beam reference signal in the candidate beam reference signal set is associated with a non-competitive random access preamble, and each original candidate beam reference signal in the original candidate beam reference signal set is associated with a non-competitive random access preamble.

[0109] In an embodiment of the present invention, the terminal completes the subsequent beam recovery process by reporting the entire candidate beam reference signal set to the base station. After generating the candidate beam reference signal set, the terminal reports the entire candidate beam reference signal set to the base station, and the base station associates each candidate beam reference signal in the set with a non-competitive RACH (Random Access Channel) resource, that is, associates it with a dedicated non-competitive random access preamble (preamble sequence).

[0110] Preferably, the code point of each candidate beam reference signal in the candidate beam reference signal set is associated with the non-competitive random access preamble, and each candidate beam reference signal is mapped to a different code point according to the candidate beam reference signal ID information or the reporting order of the candidate beam reference signal.

[0111] Preferably, the association relationship between the code point of each candidate beam reference signal and the non-competitive random access preamble is configured by the base station through RRC signaling.

[0112] The code point is codepoint, that is, the base station configures the association relationship between the candidate beam reference signal codepoint and the contention-free RACH resource through RRC, and the candidate beam reference signals reported by the terminal are mapped to different codepoints according to the RS ID or the reporting order.

[0113] Similarly, each of the original candidate beam reference signals in the original candidate beam reference signal set is associated with the random access preamble in the same way, which will not be elaborated here.

[0114] Optionally, reporting the candidate beam reference signal set to the base station is specifically as follows:

[0115] Report the ID information (i.e., RS ID) of the reference signal of each candidate beam reference signal in the candidate beam reference signal set to the base station; or, use a bitmap to indicate a subset of all predicted beam sets as the candidate beam reference signal set and report it to the base station.

[0116] Optionally, the reporting method may be to request PUSCH (Physical Uplink Shared Channel) resources through an SR or BSR, or the terminal requests an aperiodic CSI (Channel State Information) report, and the network triggers an aperiodic CSI report. This report associates the RS set of all candidate beam reference signals, and the reporting amount is N RS IDs or a bitmap.

[0117] Furthermore, the terminal needs to determine whether the base station has successfully received the candidate beam reference signal set to ensure that the base station has successfully received the candidate beam reference signal set, so as to ensure that the terminal and the base station have the same understanding of the association relationship between the candidate beam reference signal RS and the contention-free RACH resource.

[0118] Preferably, step S1311, that is, determining whether the base station has successfully received the candidate beam reference signal set, includes:

[0119] When the first communication information returned by the base station is received within the first preset time, or no communication information returned by the base station is received, it is determined that the base station has successfully received the candidate beam reference signal set; wherein, the first communication information indicates that the base station has successfully received the candidate beam reference signal set;

[0120] When the second communication information returned by the base station is received within the first preset time, it is determined that the base station fails to receive the candidate beam reference signal set; wherein, the second communication information indicates that the base station fails to receive the candidate beam reference signal set.

[0121] Optionally, the first communication information is DCI (Downlink Control Information), and the DCI information does not schedule PUSCH resources or the DCI field takes a special value, thereby indicating that the base station has successfully received the candidate beam reference signal set reported by the terminal. The second communication information is DCI information, and the DCI information schedules PUSCH resources and / or the DCI field takes a special value, thereby indicating that the base station fails to receive the candidate beam reference signal set reported by the terminal.

[0122] After the terminal reports the candidate beam reference signal set, the terminal starts / restarts a timer with a duration of t. During the period when the timer is running, if the terminal receives DCI sent by the base station (the DCI does not schedule PUSCH or the DCI field takes a special value), or does not receive DCI sent by the base station (the DCI does not schedule PUSCH or the DCI field takes a special value), it means that the base station has successfully received the candidate beam reference signal set reported by the terminal, and the timer is turned off. Then, the terminal determines a target candidate beam reference signal from the candidate beam reference signal set, and initiates non-competitive random access using the non-competitive preamble associated with the target candidate beam reference signal to establish a communication connection between the terminal and the base station.

[0123] If the terminal receives DCI sent by the base station during the period when the timer is running, and the DCI schedules PUSCH and / or the DCI field takes a special value, it means that the base station fails to receive the candidate beam reference signal set reported by the terminal, and the terminal reports the candidate beam reference signal set again on the newly indicated PUSCH resources. If the terminal fails to report the candidate beam reference signal set N times, the timer is turned off, and the terminal determines a target candidate beam reference signal according to the default / original candidate beam reference signal set preset before reporting, and initiates non-competitive random access using the non-competitive preamble associated with the target candidate beam reference signal to establish a communication connection between the terminal and the base station.

[0124] In the existing protocol, different RS IDs are associated with different contention-free RACH resources. To avoid the increase in signaling overhead caused by repeatedly configuring the association relationship between different RS IDs and contention-free RACH resources due to the update of the candidate beam reference signal set, the RRC configures the association relationship between the candidate beam reference signal codepoint and the contention-free RACH resource. The candidate beam reference signals reported by the terminal are mapped to different codepoints according to the RSID or the reporting order. After the terminal detects beam failure, it selects a beam with an RSRP greater than a preset threshold or the maximum RSRP as the target candidate beam reference signal for recovery based on the measured RSRP or predicted RSRP of the candidate beam. The terminal sends the contention-free preamble associated with the target candidate beam reference signal to notify the base station of the selected target candidate beam reference signal. After successful access, the base station and the terminal communicate using this beam.

[0125] Specific embodiments are used to explain the embodiments of the present invention. Assume that all beam RSIDs between the base station and the terminal are 1, 2,..., 32 and are sent periodically. The base station configures configuration information through high-layer RRC signaling: it needs to include the top 1 beam at each predicted moment within the next 1 s, the number of reported candidate beam reference signals is 8, and the trigger condition for reporting candidate beam reference signals is that the 4 - time BLER of the beam failure detection reference signal is less than 4%.

[0126] Assume that the original candidate beam reference signal set of the terminal is RS ID = 1 - 8. After the terminal detects the trigger condition for reporting candidate beam reference signals, the top 1 beam with an RSRP higher than the threshold Q at 2 predicted moments within the next 1 s is RSID = 10, and all beams with a predicted RSRP higher than the threshold Q in_LR are RS IDs = 10 - 20. The candidate beam reference signal set formed by reporting 8 candidate beam reference signals with relatively high predicted RSRPs through SR or BSR or aperiodic CSI is RS ID = 10 - 17. in_LR The base station configures the association relationship between the candidate beam reference signal codepoint and the contention-free RACH resource as follows:

[0127] BFR-CSIRS-Resource::=

[0128] {codepoint=1,ra-OccasionList=1,ra-PreambleIndex=1},

[0129] {codepoint=2,ra-OccasionList=1,ra-PreambleIndex=2},

[0130] {codepoint=2,ra-OccasionList=1,ra-PreambleIndex=2},

[0131] {codepoint = 3, ra - OccasionList = 1, ra - PreambleIndex = 3},

[0132] {codepoint = 4, ra - OccasionList = 1, ra - PreambleIndex = 4},

[0133] {codepoint = 5, ra - OccasionList = 1, ra - PreambleIndex = 5},

[0134] {codepoint = 6, ra - OccasionList = 1, ra - PreambleIndex = 6},

[0135] {codepoint = 7, ra - OccasionList = 1, ra - PreambleIndex = 7},

[0136] {codepoint = 8, ra - OccasionList = 1, ra - PreambleIndex = 8}.

[0137] The candidate beam reference signals are mapped to codepoint = 1 - 8 in ascending order of RS ID. Then, the candidate beam reference signals with RS ID = 10 - 17 are respectively associated with preamble 1 - 8 of the contention - free random access occasion RO1.

[0138] After the terminal reports the candidate beam reference signal set, the terminal starts a timer with a duration of t = 80 ms. If a DCI (the DCI does not schedule PUSCH or the DCI field takes a special value) sent by the base station is received during the timer startup period, it indicates that the base station has successfully received the candidate beam reference signal set reported by the terminal, and the timer is turned off. The beam with the highest predicted RSRP and RS ID = 10 is used as the target candidate beam reference signal. The terminal sends preamble 1 on the contention - free RO1 to notify the base station of the selected target candidate beam reference signal. After successful contention - free access, the base station and the terminal communicate using the beam with RS ID = 10.

[0139] If the terminal receives a DCI sent by the base station during the timer startup period, and the DCI schedules PUSCH and / or the DCI field takes a special value, it means that the base station fails to receive the candidate beam reference signal set reported by the terminal. The terminal re - reports the candidate beam reference signal set on the newly indicated PUSCH resource. See Figure 3, which is a schematic diagram of the failure of the terminal to report the candidate beam reference signal set in the embodiment of the present invention. The terminal fails to report the candidate beam reference signal set three times, the timer is turned off, and the terminal sends the associated contention-free preamble according to the original candidate beam reference signal set RS ID = 1-8. Assume that RS ID = 1-8 are respectively associated with the contention-free preamble 1-8 of RO1. Assume that among the original candidate beam reference signal set RS ID = 1-8, the measured / predicted RSRP of the beam with RS ID = 8 is the highest, and it is used as the target candidate beam reference signal. The terminal sends preamble 8 on the contention-free RO1 to notify the base station of the selected target candidate beam reference signal. After successful access, the base station and the terminal communicate using the beam with RS ID = 8.

[0140] By adopting the technical means of the embodiment of the present invention, the configuration of the candidate beam reference signal set is realized through the terminal, which improves the prediction accuracy of the candidate beam reference signal. By reporting the entire candidate beam reference signal set to the base station and setting relevant means to confirm whether the user has successfully received it, it is convenient to establish a connection between the base station and the terminal by adopting a non-competitive random access manner in the subsequent process, which is closer to the existing beam recovery process and avoids large-scale changes to the beam recovery process.

[0141] In another preferred embodiment, the candidate beam reference signal information includes the target candidate beam reference signal ID and / or the reference signal received power. The target candidate beam reference signal is determined from the candidate beam reference signal set, that is, after the terminal predicts and generates the candidate beam reference signal set, it determines the target candidate beam reference signal in the candidate beam reference signal set and reports the target candidate beam reference signal to the base station.

[0142] Then step S13 specifically includes steps S1321 to S1323:

[0143] S1321. Determine whether the base station confirms to communicate with the terminal using the target candidate beam reference signal;

[0144] S1322. When the base station confirms to use the target candidate beam reference signal, establish a communication connection between the terminal and the base station using the target candidate beam reference signal;

[0145] S1323. When the base station confirms not to use the target candidate beam reference signal, re-determine the target candidate beam reference signal and report it to the base station.

[0146] In the embodiment of the present invention, the terminal completes the subsequent beam recovery process by directly reporting a target candidate beam reference signal in the candidate beam reference signal set to the base station.

[0147] The terminal selects a beam with an RSRP greater than a preset threshold or the maximum RSRP as a target candidate beam reference signal for recovery according to the measured RSRP or predicted RSRP of the candidate beam. Alternatively, the terminal directly selects the top 1 beam with a predicted RSRP higher than threshold Q in_LR as the target candidate beam reference signal according to the beam prediction results at each predicted moment within the future time T.

[0148] The terminal reports the RS ID and / or the predicted RSRP value of the target candidate beam reference signal for beam recovery. The reporting method can also be to request PUSCH resources through an SR or BSR. Then, it is necessary to determine whether the base station confirms to communicate with the terminal using the target candidate beam reference signal.

[0149] Preferably, step S1321, that is, determining whether the base station confirms to communicate with the terminal using the target candidate beam reference signal, includes:

[0150] When the third communication information returned by the base station is received within the second preset time, or when the communication information returned by the base station is not received, it is determined that the base station confirms to communicate with the terminal using the target candidate beam reference signal; wherein, the third communication information indicates that the base station confirms to use the target candidate beam reference signal;

[0151] When the fourth communication information returned by the base station is received within the second preset time, it is determined that the base station does not confirm to communicate with the terminal using the target candidate beam reference signal; wherein, the fourth communication information indicates that the base station does not confirm to use the target candidate beam reference signal.

[0152] Optionally, the third communication information is DCI information, and this DCI information does not schedule PUSCH resources or the DCI field takes a special value or the Transmission configuration indication field in the DCI, so as to indicate that the base station confirms to establish a connection using the target candidate beam reference signal. The fourth communication information is DCI information, and this DCI information schedules PUSCH resources and / or the DCI field takes a special value, so as to indicate that the base station does not confirm to establish a connection using the target candidate beam reference signal.

[0153] If the base station confirms to communicate using the target candidate beam reference signal, a communication connection between the terminal and the base station is established using the target candidate beam reference signal. If the base station decides not to communicate using this beam based on information such as the RSRP value and the load of the beam, the terminal can select other candidate beam reference signals. For example, the top 2 beams with predicted RSRP higher than threshold Q in_LR are used as the target candidate beam reference signals, and the target candidate beam reference signals are reported again on the PUSCH resources newly indicated by the DCI, and so on until the base station returns a confirmation message.

[0154] By adopting the technical means of the embodiments of the present invention, compared with the method in which the terminal reports the entire candidate beam reference signal set to complete the subsequent beam recovery process, the embodiment of the present invention does not need to initiate a random access process, and the connection between the base station and the terminal can be directly established through the target candidate beam reference signal, simplifying the beam recovery process.

[0155] See Figure 4 , which is a schematic flowchart of another beam failure recovery method provided by the embodiments of the present invention. The embodiments of the present invention also provide another beam failure recovery method, which is executed by the base station side (network side), and the method includes steps S21 to S22:

[0156] S21. Send configuration information to the terminal; wherein, the configuration information includes candidate beam reference signal configuration information;

[0157] S22. Receive the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information.

[0158] Preferably, the configuration information further includes a trigger condition for reporting the candidate beam reference signal.

[0159] In the embodiments of the present invention, the base station configures the candidate beam reference signal configuration information and sends it to the terminal. The terminal generates candidate beam reference signal information according to the candidate beam reference signal configuration information configured by the base station and reports it to the base station, so as to establish a communication connection between the terminal and the base station, that is, to achieve beam recovery.

[0160] In another case, the configuration information further includes a trigger condition for reporting the candidate beam reference signal. Then, after the terminal generates the candidate beam reference signal information, it reports it to the base station after detecting that the trigger condition for reporting the candidate beam reference signal is met.

[0161] By adopting the technical means of the embodiments of the present invention, the time-domain beam prediction accuracy of the terminal is relatively high. By using the target candidate beam reference signal determined by the terminal based on the prediction for beam failure recovery, the probability that a new beam in future prediction belongs to the top K beams can be increased, the problem of beam failure recovery can be effectively solved, and the communication quality between the terminal and the base station can be improved.

[0162] In a preferred embodiment, the candidate beam reference signal information includes a candidate beam reference signal set; the candidate beam reference signal set includes several candidate beam reference signal IDs, that is, after the terminal predicts and generates the candidate beam reference signal set, it reports the candidate beam reference signal set to the base station.

[0163] In one case, after receiving the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information, the method further includes: sending first communication information to the terminal; the first communication information is DCI information.

[0164] Specifically, when the base station successfully receives the candidate beam reference signal information sent by the terminal, it sends first communication information to the terminal, and the first communication information indicates that the base station has successfully received the candidate beam reference signal set. Alternatively, the base station can also indicate to the terminal that it has successfully received the candidate beam reference signal set by not sending any communication information.

[0165] Further, after receiving the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information, the method further includes:

[0166] Associating a non-competitive random preamble with the code point of each candidate beam reference signal in the candidate beam reference signal set;

[0167] Mapping to different code points according to the candidate beam reference signal ID information of each candidate beam reference signal or the reporting order of the candidate beam reference signal.

[0168] Preferably, the association relationship between the code point of each candidate beam reference signal and the non-competitive random access preamble is configured by the base station through RRC signaling.

[0169] Specifically, after the base station successfully receives the candidate beam reference signal set, each candidate beam reference signal in the candidate beam reference signal set is associated with a non-competitive random preamble; the association relationship between the candidate beam reference signal and the random preamble is sent to the terminal, so that after the terminal receives the first communication information, it uses the non-competitive random access preamble associated with the target candidate beam reference signal in the candidate beam reference signal set to initiate non-competitive random access, thereby realizing the connection between the base station and the terminal.

[0170] In another case, after receiving the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information, the method further includes:

[0171] Sending second communication information to the terminal and receiving the candidate beam reference signal set re-reported by the terminal; the second communication information is DCI information.

[0172] Specifically, when the base station fails to receive the candidate beam reference signal information sent by the terminal, it sends second communication information to the terminal, and the second communication information indicates that the base station fails to receive the candidate beam reference signal set, so that the terminal re-reports the candidate beam reference signal set according to the second communication information.

[0173] Further, the method further includes:

[0174] When the number of times of sending the second communication information reaches a preset number threshold, each code point of the candidate beam reference signal in the preset original candidate beam reference signal set is associated with a non-competitive random preamble.

[0175] Specifically, when the number of times the base station sends the second communication information reaches N times, that is, the terminal fails to report the candidate beam reference signal set N times, the base station associates each code point of the candidate beam reference signal in the preset original candidate beam reference signal set with a non-competitive random preamble, and sends the association relationship to the terminal, so that after the terminal fails to report the candidate beam reference signal set N times, it uses the non-competitive random access preamble associated with the target candidate beam reference signal in the original candidate beam reference signal set to initiate non-competitive random access, thereby realizing the connection between the base station and the terminal.

[0176] In another preferred embodiment, the candidate beam reference signal information includes a target candidate beam reference signal ID and / or a reference signal received power; the target candidate beam reference signal is determined from the candidate beam reference signal set, that is, after the terminal predicts and generates the candidate beam reference signal set, it determines the target candidate beam reference signal in the candidate beam reference signal set and reports the target candidate beam reference signal to the base station.

[0177] In one case, after receiving the candidate beam reference signal information sent by the terminal, the method further includes: when it is confirmed to establish a communication connection between the terminal and the base station using the target candidate beam reference signal, sending third communication information to the terminal; the third communication information is DCI information.

[0178] Specifically, after the base station receives the target candidate beam reference signal ID reported by the terminal, if it is confirmed to establish a communication connection between the terminal and the base station using the target candidate beam reference signal, it sends third communication information to the terminal, and then establishes a communication connection between the terminal and the base station using the target candidate beam reference signal. Alternatively, the base station can also indicate to the terminal to confirm the use of the target candidate beam reference signal to establish a communication connection between the terminal and the base station by not sending any communication information.

[0179] In another case, after receiving the candidate beam reference signal information sent by the terminal, the method further includes: sending fourth communication information to the terminal and receiving the target candidate beam reference signal ID re-reported by the terminal; the fourth communication information is DCI information.

[0180] Specifically, after the base station receives the target candidate beam reference signal ID reported by the terminal, if it decides not to establish a communication connection between the terminal and the base station using the target candidate beam reference signal according to information such as the RSRP value and the load of the beam, it sends fourth communication information to the terminal to enable the terminal to re-report the target candidate beam reference signal ID.

[0181] It should be noted that the beam failure recovery method executed by the base station side in the embodiments of the present invention corresponds to all the step processes of the beam failure recovery method executed by the terminal side in the above embodiments, and their working principles and beneficial effects correspond one by one, so they will not be elaborated here.

[0182] See Figure 5, which is a schematic structural diagram of a beam failure recovery device provided by an embodiment of the present invention. An embodiment of the present invention also provides a beam failure recovery device 30, which is applied to the terminal side. The device 30 includes a configuration information acquisition module 31 and a beam information sending module 32. Among them,

[0183] The configuration information acquisition module 31 is configured to acquire configuration information sent by a base station. Among them, the configuration information includes candidate beam reference signal configuration information;

[0184] The beam information sending module 32 is configured to send candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station.

[0185] It should be noted that a beam failure recovery device provided by an embodiment of the present invention is used to execute all the process steps of a beam failure recovery method applied to the terminal side in the above embodiment. The working principles and beneficial effects of the two correspond one by one, so they will not be elaborated here.

[0186] See Figure 6 , which is a schematic structural diagram of another beam failure recovery device provided by an embodiment of the present invention. An embodiment of the present invention also provides another beam failure recovery device 40, which is applied to the base station side. The device 40 includes a configuration information sending module 41 and a beam information receiving module 42. Among them,

[0187] The configuration information sending module 41 is configured to send configuration information to a terminal. Among them, the configuration information includes candidate beam reference signal configuration information;

[0188] The beam information receiving module 42 is configured to receive candidate beam reference signal information that meets the candidate beam reference signal configuration information sent by the terminal.

[0189] It should be noted that a beam failure recovery device provided by an embodiment of the present invention is used to execute all the process steps of a beam failure recovery method applied to the base station side in the above embodiment. The working principles and beneficial effects of the two correspond one by one, so they will not be elaborated here.

[0190] See Figure 7 , which is a schematic structural diagram of a beam failure recovery device provided by an embodiment of the present invention. An embodiment of the present invention also provides a beam failure recovery device 50, including a processor 51, a memory 52, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the beam failure recovery method described in any one of the above embodiments.

[0191] It should be noted that a beam failure recovery device provided in an embodiment of the present invention is used to execute all the process steps of a beam failure recovery method in the above embodiment. The working principles and beneficial effects of the two correspond one by one, and thus will not be elaborated herein.

[0192] An embodiment of the present invention further provides a computer-readable storage medium. The computer-readable storage medium includes a stored computer program. When the computer program runs, it controls the device where the computer-readable storage medium is located to execute the beam failure recovery method described in any one of the above embodiments.

[0193] Those of ordinary skill in the art can understand that to implement all or part of the processes in the above method embodiments, it can be completed by instructing relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the method embodiments as described above. Among them, the storage medium can be a magnetic disk, an optical disc, a read-only memory (ROM), or a random access memory (RAM), etc.

[0194] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A beam failure recovery method, characterized in that, Applied to the terminal side, the method includes: Obtain the configuration information sent by the base station; wherein, the configuration information includes candidate beam reference signal configuration information; Send candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station.

2. The beam failure recovery method according to claim 1, wherein The configuration information further includes a trigger condition for reporting candidate beam reference signals; Then, the sending of the candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station is: When it is detected that the trigger condition for reporting candidate beam reference signals is met, send candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station.

3. The beam failure recovery method according to claim 1 or 2, characterized in that The candidate beam reference signal configuration information includes at least one of the following: The number of candidate beam reference signals; The reference signal received power threshold.

4. The beam failure recovery method according to claim 1, wherein The candidate beam reference signal information includes a candidate beam reference signal set; the candidate beam reference signal set includes several candidate beam reference signal IDs.

5. The beam failure recovery method according to claim 4, wherein After sending the candidate beam reference signal information to the base station, the method further includes: When the first communication information returned by the base station is received within the first preset time, or when the first communication information returned by the base station is not received, initiate non-competitive random access using the non-competitive random access preamble associated with the target candidate beam reference signal in the candidate beam reference signal set; wherein, each candidate beam reference signal in the candidate beam reference signal set is associated with a non-competitive random access preamble.

6. The beam failure recovery method according to claim 5, wherein The first communication information is DCI information.

7. The beam failure recovery method according to claim 5, wherein The code point of each candidate beam reference signal in the candidate beam reference signal set is associated with the non-competitive random access preamble, and each candidate beam reference signal is mapped to a different code point according to the candidate beam reference signal ID information or the reporting order of the candidate beam reference signals.

8. The beam failure recovery method according to claim 7, wherein, The association relationship between the code point of each candidate beam reference signal and the non-competitive random access preamble is configured by the base station through RRC signaling.

9. The beam failure recovery method according to claim 4, wherein After sending the candidate beam reference signal information to the base station, the method further includes: When the second communication information returned by the base station is received within the first preset time, re-report the candidate beam reference signal set; When the number of times of re-reporting reaches the preset number threshold, initiate non-competitive random access using the non-competitive random access preamble associated with the target candidate beam reference signal in the preset original candidate beam reference signal set; wherein, each original candidate beam reference signal in the original candidate beam reference signal set is associated with a non-competitive random access preamble.

10. The beam failure recovery method according to claim 9, wherein The second communication information is DCI information.

11. The beam failure recovery method according to claim 1, characterized in that The candidate beam reference signal information includes the target candidate beam reference signal ID and / or the reference signal received power.

12. The beam failure recovery method according to claim 11, wherein After sending the candidate beam reference signal information to the base station, the method further includes: When the third communication information returned by the base station is received within the second preset time, or when the third communication information returned by the base station is not received, establish a communication connection between the terminal and the base station using the target candidate beam reference signal; When the fourth communication information returned by the base station is received within the second preset time, re-report the ID of the target candidate beam reference signal.

13. The beam failure recovery method according to claim 12, wherein The third communication information or the fourth communication information is DCI information.

14. A beam failure recovery method, characterized in that, Applied to the base station side, the method includes: Send configuration information to the terminal; wherein, the configuration information includes candidate beam reference signal configuration information; Receive the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information.

15. The beam failure recovery method according to claim 14, wherein The candidate beam reference signal information includes a candidate beam reference signal set; the candidate beam reference signal set includes several candidate beam reference signal IDs.

16. The beam failure recovery method according to claim 15, wherein, After receiving the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information, the method further includes: Send the first communication information to the terminal; the first communication information is DCI information.

17. The beam failure recovery method according to claim 15, wherein After receiving the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information, the method further includes: Associate the code points of each candidate beam reference signal in the candidate beam reference signal set with non-competing random preambles; Map to different code points according to the candidate beam reference signal ID information of each candidate beam reference signal or the reporting order of the candidate beam reference signal.

18. The beam failure recovery method according to claim 17, wherein The association relationship between the code point of each candidate beam reference signal and the non-competing random access preamble is configured by the base station through RRC signaling.

19. The beam failure recovery method according to claim 15, characterized in that, After receiving the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information, the method further includes: Send the second communication information to the terminal and receive the candidate beam reference signal set re-reported by the terminal; the second communication information is DCI information; When the number of times of sending the second communication information reaches a preset number threshold, associate the code points of each candidate beam reference signal in the preset original candidate beam reference signal set with non-competing random preambles.

20. The beam failure recovery method according to claim 19, wherein, The association relationship between the code point of each candidate beam reference signal and the non-competing random access preamble is configured by the base station through RRC signaling.

21. The beam failure recovery method according to claim 14, wherein, The candidate beam reference signal information includes the target candidate beam reference signal ID and / or the reference signal received power.

22. The beam failure recovery method according to claim 21, wherein After receiving the candidate beam reference signal information sent by the terminal, the method further includes: When it is confirmed to establish a communication connection between the terminal and the base station using the target candidate beam reference signal, send the third communication information to the terminal; the third communication information is DCI information.

23. The beam failure recovery method according to claim 21, wherein, After receiving the candidate beam reference signal information sent by the terminal, the method further includes: Send the fourth communication information to the terminal and receive the target candidate beam reference signal ID reported again by the terminal; the fourth communication information is DCI information.

24. A beam failure recovery device, characterized in that, Applied to the terminal side, the device includes: A configuration information acquisition module, configured to acquire configuration information sent by the base station; wherein, the configuration information includes upper candidate beam reference signal configuration information; A beam information sending module, configured to send candidate beam reference signal information that meets the candidate beam reference signal configuration information to the base station.

25. A beam failure recovery device, characterized in that, Applied to the base station side, the device includes: A configuration information sending module, configured to send configuration information to the terminal; wherein, the configuration information includes candidate beam reference signal configuration information; A beam information receiving module, configured to receive the candidate beam reference signal information sent by the terminal that meets the candidate beam reference signal configuration information.

26. A beam failure recovery device, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the beam failure recovery method according to any one of claims 1 to 23.

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