WO2020253703A1

WO2020253703A1 - Beam detection method and beam detection device

Info

Publication number: WO2020253703A1
Application number: PCT/CN2020/096483
Authority: WO
Inventors: 秦城; 曾勇波
Original assignee: 华为技术有限公司
Priority date: 2019-06-18
Filing date: 2020-06-17
Publication date: 2020-12-24
Also published as: CN112104395A; CN112104395B

Abstract

Provided are a beam detection method and a beam detection device, wherein same are used for further detecting the state of the current beam when a beam failure occurs in the current beam, and continuing to use the current beam for data transmission when the state of the current beam meets a condition in order to reduce handover latency. The method comprises: a UE acquiring a first configuration parameter; the UE measuring one or more first reference signals (RS) to obtain a first detection result; when the UE determines, according to the first detection result and the first configuration parameter, that the state of the current beam indicates a beam failure, the UE determining, according to first information, whether a trigger condition is met, wherein the first information comprises the first configuration parameter and/or the first detection result; and if the first information meets the trigger condition, the UE continuing to measure one or more first RSs to obtain a second detection result, wherein if the second detection result meets a first pre-set condition, the UE continues to use the current beam for data transmission.

Description

Method for beam detection and beam detection device

Technical field

This application relates to the field of communications, and in particular, to a beam detection method and beam detection device.

Background technique

When a base station and a user equipment (UE) are in high-frequency communication, if there are obstacles or other obstructions between the base station and the UE, the signal quality of the currently used transmit/receive beam pair may be seriously degraded or even interrupted. The beam failed. In downlink communication, the base station side cannot determine whether a beam failure occurs. Therefore, the UE is required to detect the currently used transmit/receive beam pair and notify the base station so that the base station can determine whether a beam failure occurs currently.

For example, in the current 5G NR system, the base station configures a periodic reference signal (Reference signal, RS) set for the UE, which may be referred to as q0 below, and q0 includes one or more RSs, which can be used by the UE to detect and determine Whether beam failure has occurred. The physical layer (Physical, PHY) of the UE will periodically detect the RS in q0. If a beam failure is detected, for example, the block error rate (BLER) of the RS is higher than the threshold, the PHY layer of the UE will be The Medium Access Control (MAC) layer sends instructions to indicate the current RS detection result. When the MAC layer of the UE determines that the number of times the block error rate is higher than the threshold is greater than the maximum value, the UE determines that a beam failure has occurred. Then the UE can choose to notify the base station on a non-competitive random access channel (Random access channel, RACH) and request the base station to change other beams to continue communication.

However, after the UE determines that the beam fails, in the subsequent candidate beam scanning and RACH access process, a large delay may be generated, which in turn affects the subsequent beam switching delay, thereby affecting the experience of low-latency services.

Summary of the invention

The present application provides a beam detection method and beam detection device, which are used to further detect the current beam state when the current beam fails, and when the current beam state meets the conditions, continue to use the current beam for data transmission, reducing handover Time delay.

In view of this, the first aspect of the present application provides a beam detection method, including:

The UE obtains the first configuration parameter; the UE measures one or more first reference signal RS to obtain the first detection result; when the UE determines that the current beam status is beam failure according to the first detection result and the first configuration parameter, the UE determines The information determines whether the trigger condition is satisfied, where the first information includes the first configuration parameter and/or the first detection result; if the first information meets the trigger condition, the UE continues to measure one or more first RSs to obtain the second detection result, The second detection result includes one or more parameter values corresponding to the first RS. The parameter values include the block error rate BLER, the signal to noise ratio (Signal to Interference plus Noise Ratio, SINR), and the reference signal receiving power (Reference Signal Receiving Power). , RSRP), Reference Signal Receiving Quality (RSRQ), or Received Signal Strength Indication (RSSI); if the second detection result meets the first preset condition, the UE continues to use the current beam Perform data transfer.

In the embodiment of the present application, after the first RS is detected for the first time and the beam is determined to be failed, the first information is continuously determined. If the first information meets the trigger condition, the first RS can be detected again. If the detection result of the re-detection of the first RS meets the first preset condition, the communication of the current beam can be resumed. Therefore, if the beam failure occurs temporarily, the embodiment of the present application may determine the beam failure through the first RS detection, and then perform the detection again to restore the beam. Subsequent beam scanning and RACH access procedures can be eliminated, reducing delay and improving the experience of low-latency services.

In an optional implementation manner, the first preset condition includes:

The number of times that the UE detects that the parameter value corresponding to one or more first RSs is in the first preset range is not less than the first preset number of times. In the embodiment of the present application, the number of times that the parameter value corresponding to the first RS is in the first preset range is not less than the first preset number of times to indicate that the current beam is in a state of good communication quality. Therefore, when it is determined that the current beam quality is good, the current beam can be maintained for data transmission.

In a specific implementation, the first preset range includes at least one of the following:

If the second detection result includes BLER, BLER is less than the first threshold; or,

If the second detection result includes SINR, the SINR is greater than the second threshold; or,

If the second detection result includes RSRP, RSRP is greater than the third threshold; or,

If the second detection result includes RSRQ, RSRQ is greater than the fourth threshold; or,

If the second detection result includes the RSSI, the RSSI is greater than the fifth threshold.

Generally, the parameter value of the first RS can be a parameter that can measure the communication quality of the current beam, and the communication quality of the current beam can be reflected by the parameter value, and the parameter value can be used to determine whether the current beam has a beam failure. Therefore, when the parameter value of the first RS is better, it can be considered that the second detection result meets the first preset condition, and the current beam can be used for data transmission.

In an optional implementation manner, the method further includes:

If the physical (Physical, PHY) layer of the UE detects that the parameter value of the first RS is within the first preset range for not less than the first preset number of times, the PHY layer of the UE will media access control of the UE. The MAC) layer sends indication data, which is used to indicate that the second detection result meets the first preset condition.

Specifically, the PHY layer of the UE may detect the first RS and send indication data to the MAC layer. The indication data is used to indicate that the second detection result satisfies the first preset condition and provides a specific second detection The result determines the way.

In an optional implementation manner, the method further includes:

After the PHY layer of the UE detects the first RS at any time to obtain the parameter value, the PHY layer of the UE reports the parameter value to the MAC layer of the UE; when the parameter value is in the first preset range for more than the first preset number of times, the MAC of the UE The layer determines that the second detection result meets the first preset condition. In the embodiment of the present application, the PHY layer of the UE may detect the first RS, obtain the parameter value of the first RS, and send each measurement result to the MAC layer. When the number of times the parameter value is in the first preset range exceeds the first preset number of times, the MAC layer may consider that the second detection result meets the first preset condition.

In an optional implementation manner, the trigger condition includes at least one of the following:

1. The first detection result combined with the measurement error meets the first preset condition; the measurement error can be obtained by calculating the error between the calculated measurement value and the actual measurement value in a large amount of historical data. The first detection result is combined with the measurement error to determine the first detection result. If the first detection result combined with the measurement error meets the first preset condition, it can be used as a triggering condition, which can avoid misjudgment of beam failure caused by errors.

2. The average value of the parameter value in the first preset period in the first preset period is within the second preset range; it can be understood that when the average value of the parameter value in the first preset period is within the second preset range, The parameter value may be between better and worse. Therefore, it can be used as a trigger condition to continue to detect the first RS to further determine whether a beam failure has occurred.

3. The number of times that the parameter value in the first detection result is not in the third preset range within the first preset period is less than the second preset number; the number of times the parameter value of the first RS does not meet the preset value is less, It may only be a temporary fluctuation in communication quality, the communication quality may be restored, and the current beam can be used for data transmission. Therefore, the first RS can be detected again subsequently to reduce the delay of initiating random access and improve the efficiency of data transmission.

4. There is no candidate RS that meets the candidate conditions. The candidate RS is used to indicate the random access channel RACH resource; the candidate RS can indicate the RACH resource, and the RACH resource indicated by the candidate RS can be used for the UE to initiate RACH access after determining the beam failure .

5. If the first configuration parameter includes the period during which the UE detects one or more first RSs to obtain the first detection result, the period does not meet the preset period. The first preset period may be a period preset on the UE or a period configured by the base station. If the period for the UE to detect the first RS is too short, it may happen that the beam fails to be detected within a period of time, and the scene of the beam success is staggered. Therefore, the period in which the UE detects that the first RS does not satisfy the preset period can be used as a trigger condition to avoid misjudgment of beam failure.

6. If the first configuration parameter includes the number of times the UE detects one or more first RSs to obtain the first detection result, the number of times is less than the third preset number of times. If the number of times the UE detects the first RS is too low, there may be a misjudgment. Therefore, the number of times the UE detects the first RS less than the third preset number can be used as a trigger condition to detect the first RS again to avoid beam failure Misjudgment.

In an optional implementation manner, after the UE determines that the current beam status is beam failure according to the first detection results of one or more first RSs, the method further includes:

The UE detects one or more second RSs, and uses a second RS meeting a candidate condition among the one or more second RSs as a candidate RS, and the candidate RS is used to indicate a random access channel RACH resource. In the embodiments of the present application, after determining that the current beam is a beam failure, the UE may measure one or more second RSs configured by the base station, and determine candidate RSs that meet the candidate conditions, so as to determine that the beam fails after being detected again. Initiate random access on the RACH resource corresponding to the candidate RS.

In an optional implementation manner, after the UE detects one or more first RSs again, the method further includes:

The UE obtains the second information, and the second information includes the second detection result and/or the second configuration parameter; if the UE determines that the second information meets the suspension condition, the UE suspends detection of one or more first RSs, and the UE determines the candidate RS Indicates the RACH resource, and initiates random access on the RACH resource. In the implementation of the present application, the UE may obtain the second information when measuring the first RS. If the second information satisfies the suspension condition, this can initiate random access on the RACH resource corresponding to the candidate RS, reducing the invalid re-detection time.

In an optional implementation manner, if the second information includes the second detection result, the suspension condition includes at least one of the following:

The RSRP of the candidate RS is higher than the sixth threshold; or, the BLER of the candidate RS is less than the seventh threshold; or, the SINR of the candidate RS is greater than the eighth threshold; or, the RSRQ of the candidate RS is greater than the ninth threshold; or, the RSSI of the candidate RS is greater than Tenth threshold; if the second information includes the second configuration parameter, the suspension condition includes at least one of the following: the second configuration parameter includes one or more second RSs, and the UE detects that the one or more second RSs include candidate RSs Or, the second configuration parameter includes a timer, and the UE does not detect that the second detection result meets the first preset condition before the timer expires; or, the second configuration parameter includes a fourth preset number of times, and the UE detects one or more The number of the first RS exceeds the fourth preset number, and it is not detected that the second detection result meets the first preset condition. In the implementation of this application, the parameter value of the candidate RS can be added to the suspension condition. When a candidate RS with better communication quality is detected, the re-detection of the first RS can be suspended to use the beam with better communication quality for data transmission. Or, if the number of times of detecting the first RS is too many or too long, the re-detection of the first RS can also be suspended to reduce the invalid re-detection time.

In an optional implementation manner, the UE detects one or more second RSs, and uses the second RS meeting the candidate conditions among the one or more second RSs as candidate RSs, including:

The physical PHY layer of the UE detects one or more second RSs, and uses the second RS meeting the candidate condition among the one or more second RSs as the candidate RS. In the embodiments of the present application, specifically, the PHY layer of the UE may detect the second RS, and determine the candidate RS that meets the candidate condition.

In an optional implementation manner, the method further includes:

After the UE determines that the current beam status is beam failure according to the first detection result, the media intervention control MAC layer of the UE sends first indication information to the physical PHY layer of the UE. The first indication information is used to instruct the PHY layer of the UE to send the UE to the UE. The MAC layer of the UE reports the information of the candidate RS that meets the candidate condition to the MAC layer of the UE; after the UE determines that the second information meets the suspension condition, the PHY layer of the UE reports the information of the candidate RS to the MAC layer of the UE. In the embodiment of this application, after the UE determines that the current beam is in a beam failure state according to the first detection result, the MAC layer may issue the first indication information to the PHY layer to instruct the PHY layer to report the candidate RS, and the PHY layer is determining the first Second, the information of the candidate RS is reported only after the information satisfies the suspension condition, and the random access initiated on the RACH resource corresponding to the candidate RS is delayed by the manner of delayed reporting by the PHY layer.

In an alternative embodiment,

After the UE determines that the second information satisfies the suspension condition, the MAC layer of the UE sends the second indication information to the physical PHY layer of the UE. The second indication information is used to instruct the PHY layer to report one or more second information that meets the candidate conditions to the MAC layer. RS to MAC layer; UE's PHY layer reports candidate RS information to UE's MAC layer. In the implementation manner of the present application, the random access initiated on the RACH resource corresponding to the candidate RS may be delayed by a manner in which the MAC layer delays the delivery of the second indication information to the PHY layer.

In an optional implementation manner, the method further includes:

If the UE determines that the second detection result does not meet the first preset condition, or the UE determines that the first information does not meet the trigger condition, the UE determines the random access RACH resource corresponding to the candidate RS, and initiates random access on the RACH resource. In the implementation of this application, when the first information does not meet the trigger condition, it can be determined that the communication quality of the current beam is indeed bad, the random access RACH resource corresponding to the candidate RS can be determined, and random access can be initiated on the RACH resource. Avoid invalid detection.

A second aspect of the present application provides a beam detection device, including: a processing unit;

A processing unit, configured to measure one or more first reference signals RS to obtain a first detection result;

The processing unit is further configured to obtain first information when the UE determines that the current beam status is beam failure according to the first detection result, where the first information includes the first configuration parameter and/or the first detection result;

The processing unit is further configured to, if the first information meets the trigger condition, measure one or more first RSs again to obtain a second detection result, where the second detection result includes one or more parameter values corresponding to the first RS, The parameter value includes at least one of the block error rate BLER, the signal-to-noise ratio SINR, the reference signal received power RSRP, the reference signal received power RSRP, or the received strength indicator RSSI. When the first information includes the first configuration parameter, the trigger condition includes the first The configuration parameter is less than the preset parameter value, and when the first information includes the first detection result, the trigger condition includes that the parameter value corresponding to the first detection result is within the preset parameter range;

The processing unit is further configured to continue to use the current beam for data transmission if the second detection result meets the first preset condition.

In an implementation manner, the first preset condition may include at least one of the following:

The number of times that the UE detects that the parameter value corresponding to one or more first RSs is in the first preset range is not less than the first preset number of times.

In an implementation manner, the first preset range includes at least one of the following:

In one implementation,

If the PHY layer of the beam detection device detects that the number of times that the parameter value of the first RS is within the first preset range is not less than the first preset number of times, the PHY layer of the UE sends indication data to the MAC layer of the beam detection device to indicate data usage To indicate that the second detection result meets the first preset condition.

In another implementation,

After the PHY layer of the beam detection device detects the first RS at any time to obtain the parameter value, the PHY layer of the beam detection device reports the parameter value to the MAC layer of the UE;

When the number of times that the parameter value is in the first preset range exceeds the first preset number, the MAC layer of the beam detection device determines that the second detection result meets the first preset condition.

In an implementation manner, the trigger condition includes at least one of the following:

The first detection result combined with the measurement error meets the first preset condition; or,

The average value of the parameter value in the first detection result within the first preset period is within the second preset range; or,

The number of times that the parameter value in the first detection result is not in the third preset range within the first preset period is less than the second preset number of times; or,

There is no candidate RS that meets the candidate conditions, and the candidate RS is used to indicate the random access channel RACH resource; or,

If the first configuration parameter includes the period during which the UE detects one or more first RSs to obtain the first detection result, the period does not meet the preset period; or,

If the first configuration parameter includes the number of times that the UE detects one or more first RSs to obtain the first detection result, the number of times is less than the third preset number of times.

In another implementation manner, after the processing unit determines that the current beam status is beam failure according to the first detection results of one or more first RSs, the processing unit is further configured to:

One or more second RSs are detected, and a second RS meeting a candidate condition among the one or more second RSs is used as a candidate RS, and the candidate RS is used to indicate a random access channel RACH resource.

In another implementation manner, after the processing unit detects one or more first RSs again, the processing unit is further configured to:

Acquiring second information, where the second information includes a second detection result and/or a second configuration parameter;

If the processing unit determines that the second information satisfies the suspension condition, the detection of one or more first RSs is suspended, the RACH resource indicated by the candidate RS is determined, and random access is initiated on the RACH resource.

In another implementation manner, if the second information includes the second detection result, the suspension condition includes at least one of the following:

The RSRP of the candidate RS is higher than the sixth threshold; or,

The BLER of the candidate RS is less than the seventh threshold; or,

The SINR of the candidate RS is greater than the eighth threshold; or,

The RSRQ of the candidate RS is greater than the ninth threshold; or,

The RSSI of the candidate RS is greater than the tenth threshold;

If the second information includes the second configuration parameter, the suspension condition includes at least one of the following:

The second configuration parameter includes one or more second RSs, and the UE detects that the one or more second RSs include candidate RSs; or,

The second configuration parameter includes a timer, and the UE does not detect that the second detection result meets the first preset condition before the timer expires; or,

The second configuration parameter includes a fourth preset number of times, the UE detects one or more of the first RS again for more than the fourth preset number of times, and does not detect that the second detection result meets the first preset condition.

In another implementation manner, the UE detects one or more second RSs, and uses the second RS meeting the candidate condition among the one or more second RSs as candidate RSs, including:

The physical PHY layer of the UE detects one or more second RSs, and uses the second RS meeting the candidate condition among the one or more second RSs as the candidate RS.

In another implementation, the processing unit is also used for:

After determining that the current beam status is beam failure according to the first detection result, the MAC layer sends first indication information to the physical PHY layer of the UE. The first indication information is used to instruct the PHY layer to report candidate RSs that meet the candidate conditions to the MAC layer. Information to the MAC layer;

After determining that the second information satisfies the suspension condition, the PHY layer reports the candidate RS information to the MAC layer of the UE.

In another implementation, the processing unit is also used for:

After the UE determines that the second information satisfies the suspension condition, the MAC layer sends second indication information to the PHY layer. The second indication information is used to instruct the PHY layer to report one or more second RSs that meet the candidate conditions to the MAC layer;

The PHY layer reports the candidate RS information to the MAC layer of the UE.

In another implementation, the processing unit is also used for:

If it is determined that the second detection result does not meet the first preset condition, or the first information does not meet the trigger condition, the random access RACH resource corresponding to the candidate RS is determined, and random access is initiated on the RACH resource.

A third aspect of the embodiments of the present application provides a beam detection device, which may include:

A processor, a memory, and an input-output interface, the processor, the memory are connected to the input-output interface; the memory is used to store program code; the processor executes the first aspect or the first aspect of the application when calling the program code in the memory On the one hand, the steps of the method provided by any embodiment.

The fourth aspect of the embodiments of the present application provides a beam detection device. The beam detection device can be applied to a terminal device. The beam detection device is coupled with a memory, and is used to read and execute instructions stored in the memory so that the beam The detection device implements the steps of the method provided in the first aspect or any one of the first aspects in the first aspect of the present application. In one possible design, the decoding device is a chip or a system on a chip.

A fifth aspect of the present application provides a chip system that includes a processor for supporting a terminal to implement the functions involved in the above aspects, for example, for processing data and/or information involved in the above methods. In a possible design, the chip system further includes a memory, and the memory is used to store necessary program instructions and data of the terminal device. The chip system may be composed of chips, or may include chips and other discrete devices.

Among them, the processor mentioned in any of the above can be a general-purpose central processing unit (Central Processing Unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more An integrated circuit for controlling the execution of the program of the first aspect described above.

The sixth aspect of the embodiments of the present application provides a storage medium. It should be noted that the technical solution of the present invention is essentially or a part that contributes to the prior art, or all or part of the technical solution can be produced by software. It is embodied in the form that the computer software product is stored in a storage medium for storing the computer software instructions used by the above-mentioned device, which includes instructions for executing the above-mentioned first aspect or any one of the first aspects of the first aspect. The method is a program designed by a beam detection device, such as terminal equipment.

The storage medium includes: U disk, mobile hard disk, read-only memory (English abbreviation ROM, English full name: Read-Only Memory), random access memory (English abbreviation: RAM, English full name: Random Access Memory), magnetic disk or CD Various media that can store program codes.

The seventh aspect of the embodiments of the present application provides a computer program product containing instructions, which, when run on a computer, causes the computer to execute as described in the first aspect of the present application or any one of the first aspects of the first aspect. The method described.

In the embodiment of the present application, after the first RS is detected for the first time and it is determined that the beam fails, the first information is continuously acquired. If the first information meets the trigger condition, the first RS can be detected again. If the detection result of the re-detection of the first RS meets the first preset condition, the communication of the current beam can be resumed. Therefore, if the beam failure occurs temporarily, the embodiment of the present application may determine the beam failure through the first RS detection, and then perform the detection again to restore the beam. Subsequent beam scanning and RACH access procedures can be eliminated, reducing delay and improving the experience of low-latency services.

Description of the drawings

FIG. 1A is a schematic diagram of a network architecture of a beam detection method provided by an embodiment of this application;

FIG. 1B is a schematic diagram of another network architecture of the beam detection method provided by an embodiment of this application;

2A is a schematic diagram of an application scenario of the beam detection method provided by an embodiment of the application;

2B is a schematic diagram of another application scenario of the beam detection method provided by an embodiment of this application;

3 is a schematic flowchart of a beam detection method provided by an embodiment of the application;

FIG. 4 is a schematic diagram of another flow of a beam detection method provided by an embodiment of this application;

FIG. 5 is a schematic diagram of another flow of a beam detection method provided by an embodiment of this application;

FIG. 6 is a schematic diagram of another flow of a beam detection method provided by an embodiment of this application;

FIG. 7 is a schematic structural diagram of a beam detection device provided by an embodiment of the application;

FIG. 8 is a schematic diagram of another structure of a beam detection device provided by an embodiment of the application.

Detailed ways

The beam detection method provided in this application can be applied to various communication systems, for example, 5G system, Long Term Evolution (LTE) system, Global System for Mobile Communication (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA) network, Wideband Code Division Multiple Access (WCDMA) network, etc., can also be Worldwide Interoperability for Microwave Access (WiMAX) or Wireless Fidelity (Wireless) Fidelity, WiFI) and other communication networks or communication systems that can use beam communication can also be applied to future communication networks, such as 6G networks and 7G networks.

The beam detection method provided in this application may be executed by a beam detection device, and the beam detection device may be a terminal device, for example, a UE. The terminal device may be various handheld devices including communication functions, wearable devices, computing devices, or other processing devices connected to a wireless modem, and so on. For example, it can be a mobile station (Mobile Station, MS), subscriber unit (subscriber unit), cellular phone (cellular phone), smart phone (smart phone), wireless data card, personal digital assistant (Personal Digital Assistant, PDA for short) Computer, tablet computer, wireless modem (modem), handheld device (handset), laptop computer (laptop computer), machine type communication (Machine Type Communication, MTC) terminal, etc. In the following embodiments of the present application, a UE is taken as an example for more detailed description, where the UE may also be replaced with other terminal devices as described above.

Exemplarily, the specific application scenario of the embodiment of the present application may be as shown in FIG. 1A or FIG. 1B. The application scenario may include one or more base stations and one or more UEs. As shown in Figure 1A, one base station can access multiple UEs (for example, UE1 and UE2 in Figure 1A), that is, one base station can communicate with multiple UEs. As shown in FIG. 1B, one UE may also communicate with multiple base stations (base station 1, base station 2, and base station 3 in FIG. 1B). The base station and the UE can communicate through a wireless link. Generally, a wireless link can include one or more beams.

Generally, in a 5G system, beamforming can be used so that the signal can be directly transmitted from the base station to the UE, overcoming signal fading and reducing interference between signals. In 5G New Radio (NR) millimeter wave communication, the base station and UE need to use analog beamforming to overcome the path loss problem in high frequencies. In analog beamforming, different phase modulation units are set in the radio frequency (RF) module to perform full-band phase modulation on the baseband signal. In downlink communication, the base station uses one or more transmit beams, and the UE uses one or more receive beams. The transmission of each signal under high frequency requires the use of beams, including various reference signals (Radio frequency, RS), physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) data, and physical downlink control channel (Physical Downlink Control Channel, PDCCH) data, etc. Different RSs may use different beams for transmission. Therefore, measuring each RS is equivalent to measuring the beam used by each RS, and it can also be understood that the quality of the beam is related to the receiving quality of the RS. In the millimeter wave frequency band, the diffraction ability of wireless signals is weak, and it is more dependent on line of sight (LOS) path transmission. Therefore, if the base station and the UE are blocked, it may cause the signal of the currently used beam pair The quality is severely degraded or even interrupted, that is, beam failure occurs. For example, as shown in Figures 2A and 2B. When the base station communicates with the UE, if there are obstructions between the base station and the UE, such as buildings or other objects, it may affect the communication between the base station and the UE, resulting in a beam failure between the base station and the UE. Generally, since the base station side cannot know whether a beam failure occurs during downlink communication, the UE side is required to perform beam detection and notify the base station to replace the current beam.

The beam failure recovery (BFR) process may include beam failure detection, candidate beam scanning, beam recovery request sending, and beam recovery request response. In the beam failure detection, the UE detects a series of periodic RSs to determine whether a beam failure event occurs. In candidate beam scanning, the base station defines a series of candidate RSs, and uses candidate beams on these RSs for scanning of the UE, so that the UE can replace the currently failed beam. The UE selects a suitable candidate beam and sends a request to the base station for beam recovery. When the UE receives the response from the base station, it will replace the currently failed beam and use the beam previously requested for recovery to complete the beam failure recovery process. In the embodiment of the present application, after the beam failure is confirmed, the subsequent beam recovery process may be referred to as the BFR process.

Exemplarily, the BFR process can be such as: the base station configures a periodic RS set for the UE, which is referred to as q0 in the following. One or two RSs can be included in q0, and the RS in q0 can be used for UE detection to determine whether it has occurred. Beam failure event. Specifically, the PHY layer of the UE will periodically detect the RS in q0 and detect whether the BLER of the RS in q0 is greater than the threshold (Q_outLR) configured by the base station for the UE. If the BLER of the RS is greater than the threshold, the PHY layer of the UE sends an indication to the MAC layer. At the same time, the MAC layer maintains a counter. If an instruction from the PHY layer is received, the counter is increased by 1. The base station configures the maximum value of a counter for the UE. When the MAC layer counter is greater than the maximum value, the UE will determine that a beam failure has occurred. On the other hand, the base station will also configure another periodic RS set for the UE, which is referred to as q1 in the following. One or more candidate RSs may be included in q1. The RS in q1 is used for the UE to measure whether other candidate beams are available. Each RS in q1 can be associated with a non-competitive RACH resource, which is configured by the base station. When the MAC layer of the UE determines that the beam fails, it will instruct the PHY layer to report one or more qualified candidate RSs in q1 and the corresponding RSRP. After receiving the RS indicated by the PHY layer, the MAC layer determines the RACH resource corresponding to the RS, and initiates non-competitive random access on the RACH resource, and then requests the base station to perform beam recovery.

The beam detection method provided in the embodiment of the present application may continue to scan and detect the RS under certain conditions after a beam failure occurs, and if the beam is recovered, continue to use the beam for communication. Generally, there may be temporary occlusion or other reasons between the base station and the UE, and a temporary beam failure occurs. If the new beam is used directly to continue the original communication, performing beam scanning and initiating random access will greatly increase the transmission delay between the base station and the UE. However, in the embodiment of the present application, RS detection is performed again, and if the beam fails temporarily, the current beam can be used for communication. Reduce the false detection probability of beam detection, thereby reducing the time delay. The beam detection method provided in the embodiment of the present application will be described in detail below.

For a schematic flow chart of the beam detection method provided by the embodiment of the present application, refer to FIG. 3, which may include:

301. Detect one or more first RSs. If beam transmission fails, perform step 302; if no beam failure occurs, perform step 304.

When the UE uses the current beam for communication, the UE can detect one or more first RSs configured by the base station. If the UE determines that the current beam has failed beams according to the detection result, step 302 can be performed. If the current beam does not have beam failure If it fails, step 304 can be executed to continue using the current beam for data transmission.

Furthermore, before the UE detects the first RS, the UE may obtain the first configuration parameter, and the first configuration parameter may be configured by the base station or determined by the UE. The first configuration parameter may include the period and number of times the UE detects the first RS. The UE may measure the first RS according to the first configuration parameter to obtain the first detection result.

Generally, the base station may configure a first RS set for the UE, and the first RS set may include one or more first RSs. For example, the first RS set may include one or two first RSs. The first RS may be used by the UE to detect whether a beam failure has occurred in the current beam. The one or more first RSs correspond to the current beam used by the UE, for example, the one or more first RSs may be transmitted using the current beam. When the one or more first RSs are transmitted through the current beam, they may be transmitted in different periods or time slots.

It should be noted that the detection result obtained by the UE detecting one or more first RSs may be referred to as the first detection result below.

It should also be noted that in the following embodiments of the present application, the process in which the UE detects one or more first RSs may also be referred to as the first detection. The first detection in the embodiments of the present application is only for the second detection. The detection of beam failure before detection does not limit the UE to detect the first RS for the first time. Before step 301 in the embodiment of the present application, the UE may also detect the first RS one or more times.

302. Determine the first information. If the trigger condition is met, step 303 is executed, and if the trigger condition is not met, step 305 is executed.

After the UE detects that the current beam has a beam failure, the UE may continue to obtain the first information. If the first information satisfies the trigger condition, step 303 may be performed, that is, the first RS is detected again to further determine whether the current beam has failed. If the first information does not meet the trigger condition, step 305 can be performed to initiate a random access request for beam recovery.

Optionally, in some possible implementation manners, the first information may include one or more of the following: a first configuration parameter or a first detection result. The first configuration parameter is the parameter when the UE obtains the first detection result for one or more first RSs, for example, the period and number of times for detecting one or more first RSs. More specifically, the first information may include one or more of the following: whether the first detection result combined with the measurement error meets a first preset condition, the first preset condition is a condition for confirming that no beam failure occurs; whether the UE is scanning To the candidate RS that meets the candidate conditions, the candidate RS can be used to indicate RACH resources; whether the average value of the parameter values of the first RS detected by the UE in the first preset period is within the second preset range; the UE is in the first preset period Whether the number of times the parameter value of the first RS is detected within the third preset range within the preset period is less than the second preset number; whether the period of the UE detecting the first RS meets the preset period; the number of times the UE detects the first RS Is it less than the third preset number of times and so on.

In an implementation manner, the candidate condition may include: the parameter value of one or more second RS configured by the base station for the UE is in a preset parameter range, and the parameter value may include RSRP, BLER, SINR, RSRQ, RSSI, etc. Wait.

Optionally, in some possible implementation manners, correspondingly, the trigger condition may correspond to the first information. When the first information includes the first configuration parameter, the trigger condition may include whether the first configuration parameter is less than a preset parameter value; when the first information includes the first detection result, the trigger condition may include the first configuration parameter. Whether the parameter value of the test result is within the preset parameter range. The first configuration parameter may include one of the information about whether there are candidate RSs, the period at which the UE detects one or more first RSs for the first time, or the number of times the UE detects one or more first RSs for the first time. Multiple. More specifically, the trigger condition may include one or more of the following: the UE does not scan a candidate RS that meets the candidate condition, and the candidate RS may be used to indicate the RACH resource; the first detected by the UE in the first preset period The average value of the parameter value of an RS is in the second preset range; the number of times that the parameter value of the first RS detected by the UE in the first preset period is in the third preset range is less than the second preset number of times; the UE detects the first The period of one RS does not meet the preset period; the number of times the UE detects the first RS is less than the third preset number, and so on. The third preset range and the second preset range may be the same or different.

Optionally, the parameter value in the first detection result may include one or more of BLER, SINR, RSRP, RSRQ, or RSSI.

Exemplarily, each condition in the first information and the trigger condition will be described in detail in the embodiment of FIG. 4 below.

303. Perform re-detection on one or more first RSs, and if the first preset condition is met, step 304 is executed, and if the first preset condition is not met, step 305 is executed.

After determining that the first information satisfies the trigger condition, the UE may detect the first or multiple first RSs again. If the detection result obtained by the UE redetecting the first or more first RSs meets the first preset condition, step 304 is executed to determine that the current beam state is stable, and the current beam can be used to continue communication. If the detection result obtained by the UE re-detecting the first or multiple first RSs does not meet the first preset condition, step 305 is executed, that is, a beam failure occurs in the current beam, and a random access request may be initiated to perform beam recovery.

It should be noted that the detection result obtained by the UE re-detecting one or more first RSs may be referred to as the second detection result below.

Optionally, in some possible implementation manners, the first preset condition may include: the UE detects that one or more parameter values of the first RS are within the first preset range at any one time; or, the UE detects one The number of times that the parameter values of the multiple RSs are in the first preset range is not less than the first preset number, etc. Specifically, the number of times that the UE detects that the parameter values of one or more RSs are in the first preset range may be continuous or non-continuous. It can be understood that the first preset condition includes two situations. One is that as long as the UE detects that the parameter value of the first RS is within the first preset range any time, it can be determined that the second detection result meets the first preset condition. That is, as long as the parameter value of the first RS is detected once in the first preset range, it can be understood that the current beam has been restored, and the current beam can be used for data transmission, which improves the efficiency of re-detection. The other is that the number of times that the UE detects that the parameter value of the first RS is in the first preset range is greater than or equal to the first preset number of times, that is, it can be understood that the current beam has been restored, which improves the reliability of the detection result and improves the determination of the current beam Reliability restored. For example, in the M detections of the first RS, the parameter values of the N detection results are in the first preset range. If N is greater than the first preset number of times, it can be understood that the first detection result meets the first preset range. Set conditions.

Optionally, in some possible implementation manners, the first preset range includes one or more of the following: the BLER of one or more first RSs is less than a first threshold; or, the SINR of one or more first RSs Greater than the second threshold; or, the RSRP of one or more first RSs is greater than the third threshold; or, the RSRQ of one or more first RSs is greater than the fourth threshold; or, the RSSI of the one or more first RSs Greater than the fifth threshold, etc. The threshold corresponding to each parameter may be configured by the base station, or it may be dynamically adjusted and determined by the UE according to actual application scenarios. Generally, the parameter value of the first RS can be a parameter that can measure the communication quality of the current beam, and the communication quality of the current beam can be reflected by the parameter value, and the parameter value can be used to determine whether the current beam has a beam failure.

Optionally, in some possible implementation manners, the configuration of the UE to detect the first RS again may be the same as or different from the configuration of the UE to detect the first RS for the first time. The specific detection configuration may include the detection period, or the number of detections, and so on. For example, if the UE uses the T period to detect two of the first RSs for the first RS for the first time, when the UE detects again, it can detect one first RS with a detection period of 2*T.

Optionally, in some possible implementation manners, after the UE determines that the beam fails according to the first detection result, the UE can directly detect the first RS again without determining whether the first information meets the trigger condition, so as to improve the UE's The efficiency of re-detection by an RS reduces the communication delay of the UE.

304. Use the current beam for data transmission.

When the UE detects one or more first RSs for the first time and determines that no beam failure has occurred, or, the UE detects one or more first RSs again, and determines that the second detection result meets the first preset condition, then The UE can continue to use the current beam for data transmission.

If the UE detects one or more first RSs for the first time and determines that no beam failure has occurred, it can be understood that the communication quality of the current beam is good, and no failure has occurred, and the current beam can be used for data transmission. If the UE detects one or more first RSs again and determines that the second detection result meets the first preset condition, it can be understood that an error may have occurred in the first detection, or it may be temporarily detected during the first detection. In the case of beam failure, the communication quality of the beam has been restored when the beam is detected again, and the current beam can be used for data transmission.

Generally, in practical applications, the beam used by the control channel is relatively wide. Even if occlusion occurs, beam failure is not easy to occur. The beam used by the data channel is narrower than the beam used by the control channel. The channel is more prone to beam failure. Therefore, after the control channel determines that the beam failure occurs during the first detection, if it is determined that the beam failure does not occur in the second detection, the current beam can be used for data transmission of the control channel.

305. Determine the random access channel RACH resource corresponding to the candidate RS, and initiate random access.

If the first information does not meet the trigger condition, or the second detection result does not meet the first preset condition, the UE can initiate random access on the RACH resource corresponding to the candidate RS to notify the base station to use the new beam for data transmission .

In the embodiment of the present application, after the UE detects the first RS for the first time and determines that the beam fails, the first RS may be detected again, and if the detection result of the second detection meets the first preset condition, it may continue Use the current beam for data transmission. It can be understood that if the detection result of the second detection meets the first preset condition, it can be understood that the communication quality of the current beam is better or more stable during the second detection, and there may be an error in the first detection, or after the first detection The communication quality of the beam is restored, and therefore, the current beam can be used for data transmission. Subsequent beam scanning and RACH access procedures can be eliminated, reducing delay and improving the experience of low-latency services.

The beam detection method provided in the present application will be described in more detail below. Refer to FIG. 4, which is a schematic diagram of another flow of the beam detection method provided by the embodiment of the present application, which may include:

401. Detect one or more first RSs, and if beam transmission fails, perform step 402; if no beam failure occurs, perform step 406.

When the UE uses the current beam for communication, the UE can detect one or more first RSs configured by the base station. If the UE determines that the current beam has failed beams according to the detection result, step 402 can be performed. If the current beam is a beam generation If it fails, step 404 can be executed to continue using the current beam for data transmission.

Generally, the base station may configure a first RS set for the UE, and the first RS set may include one or more first RSs. For example, the first RS set may include one or two first RSs. The first RS may be used by the UE to detect whether a beam failure has occurred in the current beam. The first RS corresponds to the current beam used by the UE, for example, the first RS may be transmitted using the current beam.

Exemplarily, after the UE detects one or more first RSs to obtain the first detection result, it may be determined whether the first detection result meets the second preset condition, and if the first detection result meets the second preset condition , It can be determined that the current beam status is that no beam failure has occurred, and if the first detection result does not meet the second preset condition, it can be determined that the current beam status is that a beam failure has occurred. In addition, the second preset condition may be the same as the first preset condition or different from the first preset condition, and may be specifically adjusted according to actual application scenarios, which is not limited in this application.

Exemplarily, the second preset condition may include: when the UE detects one or more first RSs, the UE detects that the parameter value of the first RS is within a preset range any time, or the UE detects The number of times that the parameter value of the first RS is in the preset range is greater than the preset number, etc. For example, the parameter value may include: BLER, RSRQ, RSRP, SINR, RSSI, and so on.

Generally, when the UE detects one or more first RSs, the UE may periodically detect one of the first RSs, and the UE may also periodically detect multiple first RSs at the same time. In addition, the detection period and the number of times of detection can be issued by the base station, or the UE can directly determine the period or number of detections. For example, the base station may configure a first RS set for the UE, and the first RS set may include one or more first RSs. The base station may periodically send one or more first RSs to the UE through the current beam, and the UE may also periodically detect one of the first RS or multiple first RSs, and determine whether the current beam is A beam failure has occurred. The period for the base station to send the first RS and the period for the UE to detect the first RS may be the same or different.

402. Acquire the first information, and if the trigger condition is met, step 403 is executed, and if the trigger condition is not met, step 405 is executed.

After the UE detects that the current beam has a beam failure, the UE may continue to obtain the first information. If the first information satisfies the trigger condition, step 403 can be performed, that is, the first RS is detected again to further determine whether the current beam has failed. If the first information does not meet the trigger condition, step 405 may be performed, that is, random access is initiated on the RACH resource corresponding to the candidate RS.

Optionally, in some possible implementation manners, the first information may include one or more of the following: whether the first detection result combined with the measurement error meets the first preset condition, the first preset condition is to confirm that it has not occurred Conditions for beam failure; whether the UE scans a candidate RS that meets the candidate conditions, which can be used to indicate RACH resources; whether the average value of the parameter values of the first RS detected by the UE in the first preset period is in the second The preset range; whether the average value of the parameter value of the first RS detected by the UE in the first preset period is in the third preset range less than the second preset number of times; the UE detects whether the period of the first RS meets the preset Set period; whether the number of times the UE detects the first RS is less than the third preset number and so on.

Optionally, in some possible implementation manners, correspondingly, the trigger condition may correspond to the first information. The trigger condition may include one or more of the following: the first detection result combined with the measurement error meets the first preset condition, the first preset condition is a condition for confirming that no beam failure has occurred; the UE does not scan for candidates that meet the candidate conditions RS, the candidate RS can be used to indicate RACH resources; the average value of the parameter value of the first RS detected by the UE in the first preset period is within the second preset range; the UE detected in the first preset period The number of times the parameter value of the first RS is in the third preset range is less than the second preset number; the period of the UE detecting the first RS does not meet the preset period; the number of times the UE detects the first RS less than the third preset number, and so on.

The following describes the conditions involved in the trigger condition in detail.

1. The first detection result combined with the measurement error meets the first preset condition, and the first preset condition is a condition for confirming that no beam failure has occurred. The measurement error can be obtained by calculating the error between the calculated measurement value and the actual measurement value in a large amount of historical data. The measurement value may be various parameter values related to the first RS. For example, the parameter value may include one or more of BLER, SINR, RSRP, RSRQ, RSSI, and the like. The first detection result may also include a parameter value corresponding to the first RS. The parameter value may be used to measure the steady state of the beam. For example, the parameter value may also include one of BLER, SINR, RSRP, RSRQ, RSSI, etc. Item or multiple items. The first detection result combined with the measurement error satisfies the first preset condition. In addition to the first preset condition, it may also be other conditions configured by the UE or the base station.

2. The UE does not scan a candidate RS that meets the candidate conditions. The candidate RS may indicate the RACH resource, and the RACH resource indicated by the candidate RS may be used by the UE to initiate random access using the RACH resource after determining that the beam fails, and then request the base station to perform beam recovery. Generally, the base station may allocate one or more second RSs to the UE, and the one or more second RSs may be included in the second RS set. Each of the one or more second RSs may be used to indicate RACH resource information. Each second RS can have a one-to-one correspondence with one RACH resource. The UE may detect the one or more second RSs, and use the second RS meeting the candidate condition as the candidate RS. The RACH resource indicated by the candidate RS may be used for the UE to initiate RACH access after determining that the beam fails.

3. The average value of the parameter value of the first RS detected by the UE in the first preset period is within the second preset range. The first preset period may be a period preset on the UE or a period configured by the base station. The parameter value of the first RS may include one or more of BLER, SINR, RSRP, RSRQ, RSSI, and the like. For example, the second preset range may be the range where the average values of the parameter values BLER, SINR, RSRP, RSRQ, RSSI, etc. of the first RS satisfy the first preset condition. The second preset range may be determined by the UE, or may be notified to the UE after being configured by the base station. It can be understood that as long as the UE detects that the average value of the parameter value of the first RS is within the second preset range within the first preset period, the trigger condition can be satisfied.

4. The number of times that the parameter value of the first RS detected by the UE in the first preset period is not in the third preset range is less than the second preset number of times. The parameter value may include one or more of BLER, SINR, RSRP, RSRQ, RSSI, and so on. In the first preset period, the number of times that the UE detects that the parameter value of the first RS is not in the third preset range is less than the second preset number of times, so as to satisfy the trigger condition. If in the first preset period, the number of times the parameter value of the first RS is not in the third preset range is less than the second preset number, it can be understood that the number of times the parameter value of the first RS does not meet the preset value is less , It may only be a temporary fluctuation in communication quality, the communication quality may be restored, and the current beam can be used for data transmission. Therefore, the first RS can be detected again subsequently to reduce the delay of initiating random access and improve the efficiency of data transmission.

It should be noted that the third preset range may be the same as or different from the aforementioned first preset range.

5. The UE detects that the period of the first RS does not meet the preset period. When the UE detects one or more first RSs for the first time, if the period of detecting the first RS does not meet the preset period, it may also be used as a trigger condition. For example, if the UE only has a beam failure in a period of time, and the beam communication is normal in the remaining period of time. Then, if the period of detecting the first RS is small, it may happen that the period of detection is just within the short time of beam failure, and the beam is normal in the remaining short time, and misdetection may occur. Therefore, when the detection period does not meet the preset period, it can be understood that the trigger condition is satisfied, and the first RS can be detected again subsequently to ensure that the detection result is correct and the subsequent access delay is reduced.

6. The number of times that the UE detects the first RS is less than the third preset number of times. When the UE detects one or more first RSs for the first time, the number of detections may be less, so the confidence of detection is low. Therefore, when the number of times the UE detects the first RS is less than the third preset number of times, it can also be used as a trigger condition to trigger subsequent re-detection of one or more first RSs. The third preset number of times may be directly determined by the UE, or may be configured by the base station. For example, if the UE detects the first RS less frequently, it may just detect a small number of beam failures. Therefore, a small number of detections of the first RS at the first time can be used as a trigger condition, and subsequent detections of the first RS can be performed again to confirm whether the beam fails again to avoid false detections. For example, if the maximum value of the counter configured by the base station for the MAC layer of the UE is relatively small, or the period of beam detection of the first RS is relatively small, the PHY layer of the UE only needs to detect the BLER exceeding the signal in a few times or in a short time. The threshold value will be considered as a beam failure, which may cause a misjudgment of beam failure in situations such as large mobility and sudden changes in attitude. Therefore, in this case, the continuous detection of the first RS can be triggered.

The aforementioned conditions can be combined as trigger conditions, and besides the aforementioned conditions can be used as trigger conditions, the trigger conditions can also include other conditions. For example, it can include UE movement detected by sensors or UE movement detected by positioning. And so on, it can be adjusted according to actual application scenarios, which is not limited here.

It should be understood that the first information corresponds to the trigger condition, and the specific conditions are similar, and will not be repeated here.

403. Perform a second detection on one or more first RSs, and if the first preset condition is met, step 406 is executed, and if the first preset condition is not met, step 404 is executed.

Step 403 in this embodiment of the present application is similar to the aforementioned step 303, and will not be repeated here.

Furthermore, optionally, in some possible implementations. The UE may include MAC and PHY layers.

If the first preset condition includes that the number of times that the UE detects that the parameter value of one or more RSs is in the first preset range is not less than the first preset number of times, then when the UE detects one or more first RSs again, The UE’s physical PHY layer detects that the number of times that the parameter value of the first RS is within the first preset range is not less than the first preset number of times, then the UE’s PHY layer sends indication data to the UE’s media intervention control MAC layer, indicating that the data is used for Indicates that the detection result of the re-detection satisfies the first preset condition. It can be understood that the PHY layer of the UE may report the second detection result obtained by multiple detections to the MAC layer through indication data after detecting the first RS multiple times, so as to notify the MAC layer that the second detection result meets the first prediction. Set conditions.

Optionally, if the PHY layer reports the second detection result obtained multiple times to the MAC layer through indication data. When the PHY layer detects one or more first RSs, a timer may be set on the PHY layer, and the PHY completes the re-detection of the first RS before the timer expires, and reports the first detection result to the MAC layer. In addition to the timer, a counter can also be set on the PHY layer, and the counter can be used to count the number of times the first RS is detected again. Specifically, the counter may count the number of times the PHY layer detects the first RS, or it may count the number of times the PHY layer detects that the parameter value of the first RS is within the first preset range.

For example, if the counter counts the number of times the PHY layer detects the first RS, before the count of the counter exceeds the maximum number of detections, if the number of times the parameter value of the first RS is detected in the first preset range is not less than the For the first preset number of times, the PHY layer sends indication data to the MAC layer, and reports the second detection result obtained by multiple detections to the MAC layer through the indication data to notify the MAC layer that the second detection result meets the first preset condition. If the counter counts the number of times that the PHY layer detects that the parameter value of the first RS is in the first preset range, when the number of times of the counter is not less than the first preset number of times, the PHY layer sends indication data to the MAC layer, which will detect multiple times The obtained second detection result is reported to the MAC layer by indicating data to notify the MAC layer that the second detection result meets the first preset condition.

Furthermore, optionally, in some possible implementations. If the first preset condition includes that the number of times that the UE detects that the parameter value of one or more RSs is in the first preset range is not less than the first preset number of times, then when the UE detects one or more first RSs again, If multiple detections are performed, the PHY layer will send the current detection result to the MAC layer after each detection of the first RS. When there are one or more parameter values in the first preset range for the number of times When the first preset number of times is exceeded, the MAC layer determines that the second detection result of the re-detection satisfies the first preset condition.

For example, a counter may be set on the MAC layer, and the counter may count the number of times the MAC has received the detection result, that is, the number of times the PHY layer performs re-detection of the first RS. Before the count of the counter does not exceed the maximum number of detections, if the number of times that the first RS parameter value is in the first preset range is not less than the first preset number of times, the MAC layer determines that the detection result of the re-detection meets the first preset condition . In addition to the counter, a timer can also be set on the MAC to count the length of time the PHY layer detects the first RS.

404. Acquire the second information. If the suspension condition is met, step 405 is executed, and if the suspension condition is not met, step 403 is continued.

During the re-detection of one or more first RSs by the UE, the second information may also be obtained, and it is determined whether the second information satisfies the suspension condition. If the second information satisfies the suspension condition, the re-detection of the first RS can be suspended, and the UE initiates random access on the new RACH resource. If the second information does not meet the suspension condition, the first RS may continue to be detected again.

Specifically, the second information may include the second detection result and/or the second configuration parameter.

Optionally, in some possible implementation manners, the suspension condition may include one or more of the following: the UE detects one or more second RS types including candidate RSs that meet the candidate conditions; the RSRP of the candidate RS is higher than the first RS. Six thresholds; the UE does not detect the second detection result that meets the first preset condition before the timeout; the number of times the UE detects the first RS again exceeds the fourth preset number. And, the second information corresponds to the suspension condition.

The suspension conditions in the embodiments of the present application will be described in detail below.

1. The UE detects that one or more second RS types include candidate RSs that meet candidate conditions. The first or multiple second RSs are RSs in the second RS set allocated by the base station to the UE. The second RS may be used for the UE to detect candidate RACH resources. The UE may determine candidate beams according to one or more second RSs, so as to use the candidate beams for data transmission when the current beam fails. It should be understood that this condition is an optional condition. The base station can detect the second RS after determining that the current beam fails in step 401, or after detecting again to determine that the second detection result does not meet the first preset condition, The second RS performs detection and determines a candidate RS. For example, the PHY layer of the UE can detect the first RS and the second RS, and the information of the second RS needs to be sent by the MAC layer to the PHY layer. If the MAC layer determines that the second detection result of the first RS re-detection is After the beam fails, the information of the second RS is delivered to the PHY layer, and the suspension condition may not include the condition related to the candidate RS.

2. The RSRP of the candidate RS is higher than the sixth threshold. In the embodiment of the present application, the RSRP of the candidate RS is higher than the sixth threshold as the candidate condition, or after the candidate RS meeting the candidate condition is detected, the RSRP of the candidate RS is further detected to be higher than the sixth threshold, as Suspension conditions. The sixth threshold here may be the same as or different from the aforementioned third threshold.

3. The BLER of the candidate RS is less than the seventh threshold. In the embodiment of the present application, the RSRP of the candidate RS is higher than the sixth threshold as the candidate condition, or after the candidate RS meeting the candidate condition is detected, the RSRP of the candidate RS is further detected to be higher than the sixth threshold, as Suspension conditions. The seventh threshold here can be the same as or different from the aforementioned first threshold.

4. The SINR of the candidate RS is greater than the eighth threshold. In the embodiment of the application, the SINR of the candidate RS is greater than the eighth threshold as the candidate condition, or after the candidate RS meeting the candidate condition is detected, the SINR of the candidate RS is further detected to be greater than the eighth threshold as the suspension condition . The eighth threshold here can be the same as or different from the aforementioned second threshold.

5. The RSRQ of the candidate RS is greater than the ninth threshold. In the embodiment of the application, the RSRQ of the candidate RS is greater than the ninth threshold as the candidate condition, or after the candidate RS meeting the candidate condition is detected, the RSRQ of the candidate RS is further detected to be greater than the ninth threshold as the suspension condition . The ninth threshold here may be the same as or different from the foregoing fourth threshold.

6. The RSSI of the candidate RS is greater than the tenth threshold. In the embodiment of the application, the RSSI of the candidate RS is greater than the tenth threshold as the candidate condition, or after the candidate RS meeting the candidate condition is detected, the RSSI of the candidate RS is further detected to be greater than the tenth threshold as the suspension condition . The tenth threshold here may be the same as or different from the fifth threshold mentioned above.

7. The UE does not detect the second detection result that meets the first preset condition before the timeout. In the embodiment of the present application, the time period for detecting the first RS again can be set. For example, when the UE starts to detect the first RS, a timer is activated, and the timer duration is a preset duration. If the UE does not detect a second detection result that meets the first preset condition before the timer expires , The suspension condition is met. It can be understood that if the second detection result that satisfies the first preset condition is not detected within the preset time period, the communication quality of the current beam may be low, a beam failure occurs, and the re-detection of the first RS may be suspended. In order to avoid invalid detection, the efficiency of data transmission of the UE is improved.

8. The number of times that the UE detects the first RS again exceeds the fourth preset number of times. In the embodiment of the present application, the number of times the UE detects the first RS again can be set. If the number of times that the UE detects the first RS again exceeds the fourth preset number and does not detect a second detection result that meets the first preset condition, the suspension condition is satisfied. For example, the counter can be enabled. When the UE detects the first RS again, the counter is incremented by one. When the UE does not detect the second detection result that meets the first preset condition, and the count of the counter exceeds the fourth preset Set the number of times to satisfy the suspension condition. When the UE detects the first RS again, if the UE detects multiple times and still does not detect a detection result that meets the first preset condition, it can be understood that the communication quality of the current beam is low and a beam failure has occurred. The re-detection of the first RS is suspended to avoid invalid detection and improve the efficiency of data transmission of the UE.

It should be understood that the suspension conditions may include one or more of the above, and multiple of them may be combined as the suspension conditions, and the suspension conditions may include other conditions in addition to the one or more conditions mentioned above. For example, if the sensor determines that the UE has not moved, it can be specifically adjusted according to actual application scenarios, which is not limited in this application.

In the embodiment of the present application, when the UE detects one or more first RSs again, it can be determined whether the second information meets the suspension condition. If the second information does not satisfy the suspension condition, the detection of the first RS can be continued. If the second information satisfies the suspension condition, the re-detection of the first RS is suspended, and random access is initiated on the RACH resource corresponding to the candidate RS. For example, after the UE detects an RS with better communication quality, it can initiate random access on the RACH resource corresponding to the candidate RS for more stable communication. If the UE does not detect a second detection that meets the first preset condition As a result, it can be understood that the communication quality of the current beam is poor, and the detection of the first RS can also be suspended to improve the communication efficiency of the UE and avoid invalid detection.

405. Determine the RACH resource corresponding to the candidate RS, and initiate random access.

After the UE detects one or more first RSs again, and the obtained detection result does not meet the first preset condition, or the second information meets the suspension condition, the UE initiates random access on the RACH resource corresponding to the candidate RS.

In the embodiment of the present application, the base station may allocate a second RS set to the UE, and the second RS set includes one or more second RSs. After the UE determines that the beam failure has occurred according to the first detection result, the UE may detect one or more second RSs to determine candidate RSs that meet the candidate conditions. Each second RS corresponds to one RACH resource. The signal quality of the second RS is associated with the communication quality of the corresponding RACH resource. The communication quality of the corresponding RACH resource can be determined by detecting the second RS, and then the RACH resource with better communication quality can be determined as the candidate RACH resource. After the UE detects one or more first RSs again, and the obtained detection result does not meet the first preset condition, or the second information meets the suspension condition, the UE can select the RACH resource corresponding to the candidate RS to initiate random access.

Therefore, even if the current beam status is determined to be beam failure through re-detection, the new RACH can be accessed through the candidate RS, so that the UE can communicate normally.

Optionally, after the UE detects the first RS for the first time and determines that the beam failure has occurred, the UE detects the second RS to determine the candidate RS; it may also detect again to determine that the second detection result does not meet the first preset After the condition, the UE detects the second RS to determine the candidate RS; it can also be that the suspension condition does not include the condition related to the candidate RS. After determining that the second information does not meet the suspension condition, the UE detects the second RS to determine the candidate RS. The RS can be specifically adjusted according to actual application scenarios, which is not limited in this application.

Optionally, in some possible implementation manners, the candidate condition may include: the parameter value of the second RS is within a fourth preset range. The parameter value may include one or more of the following: BLER, SINR, RSRP, RSRQ, RSSI, and so on.

Optionally, in some possible implementation manners, if there are multiple second RSs that meet the candidate conditions, one may be randomly determined as the candidate RS from the multiple second RSs that meet the candidate conditions, or from the Among the multiple second RSs that meet the candidate conditions, the second RS with the optimal parameter value is determined as the candidate RS, which can be specifically adjusted according to actual application scenarios, which is not limited in this application.

In some specific implementation manners, the PHY layer of the UE detects one or more second RSs, and uses the second RS meeting the candidate condition among the one or more second RSs as the candidate RS.

Optionally, in a possible implementation manner, after the UE determines that the current beam status is beam failure according to the first detection results of one or more first RSs, the MAC layer of the UE delivers the first indication information to the PHY layer , Instruct the physical PHY layer to report one or more candidate RSs that meet the conditions. After the second detection result does not satisfy the first preset condition, or after the second information satisfies the suspension condition, the PHY layer of the UE reports the candidate RS information to the MAC layer of the UE. Therefore, in the embodiment of the present application, the BFR process can be suspended by the PHY layer delaying the reporting of the candidate RS to the MAC layer.

Optionally, in another possible implementation manner, after the UE determines that the second information satisfies the suspension condition, or after the UE determines that the second detection result does not satisfy the first preset condition, the MAC layer of the UE is lowered to the PHY layer Send second indication information to instruct the PHY layer to report one or more candidate RSs that meet the conditions. The PHY layer reports the candidate RS information to the MAC layer of the UE. Therefore, in the embodiment of the present application, the BFR process can be suspended by delaying the delivery of the second RS information to the PHY layer by the MAC layer.

406. Use the current beam for data transmission.

The UE performs the first detection on one or more first RSs and determines that no beam failure has occurred, or the UE performs another detection on one or more first RSs and determines that the second detection result does not meet the first preset condition, Then the UE can continue to use the current beam for data transmission.

If the UE detects one or more first RSs for the first time and determines that no beam failure has occurred, it can be understood that the communication quality of the current beam is good, and no failure has occurred, and the current beam can be used for data transmission. If the UE detects one or more first RSs again and determines that the second detection result does not meet the first preset condition, it can be understood that an error may have occurred in the first detection, or it may temporarily occur during the first detection If the beam fails, the communication quality of the beam has been restored when the beam is detected again, and the current beam can be used for data transmission.

In the embodiment of the present application, after the UE detects the first RS for the first time and determines that the beam fails, the first RS may be detected again, and if the detection result of the second detection meets the first preset condition, it may continue Use the current beam for data transmission. It can be understood that if the detection result of the second detection meets the first preset condition, it can be understood that the communication quality of the current beam is better or more stable during the second detection, and there may be an error in the first detection, or after the first detection The communication quality of the beam is restored, and therefore, the current beam can be used for data transmission. Subsequent beam scanning and RACH access procedures can be eliminated, reducing delay and improving the experience of low-latency services. In addition, when the first RS is re-detected, if the second information satisfies the suspension condition, the re-detection of the first RS can be suspended, which can avoid invalid detection and improve the data transmission efficiency of the UE.

The foregoing description of the beam detection method provided in the embodiment of the present application is described in detail. The following uses a specific application scenario as an example to describe the beam detection method provided in the embodiment of the present application.

Please refer to FIG. 5, which is a schematic diagram of another flow of the beam detection method provided by the embodiment of the present application, which may include:

501. The PHY layer detects one or more first RSs.

The PHY layer detects one or more first RSs, obtains the first detection result, and sends the detection result to the MAC layer.

It should be understood that both the PHY layer and the MAC layer in the embodiment of the present application are different layers in the same UE.

The first detection result may include one or more parameter values of the first RS, for example, may include one or more of BLER, SINR, RSRP, RSRQ, or RSSI.

Exemplarily, the following takes the parameter value as BLER as an example for description. It should be understood that the following embodiments of the present application only take BLER as an example for illustrative description, and other parameter values can also be used to replace the BLER, for example, SINR, RSRP can be specifically adjusted according to actual application scenarios and is not limited here.

For example, the PHY layer may periodically detect a first RS, the detection period is 5 slots, and the maximum number of detections is 3 times. If the first RS is sent for the first time in slot0, the first RS can be detected in the three time slots of slot0, slot5, and slot10. The first detection result may include the BLER value obtained by the three detections of the first RS.

For another example, the MAC layer of the UE maintains a counter. During the detection of the first RS by the PHY layer of the UE, if the BLER value reaches the failure threshold, it will report an indication to the MAC layer. When the counter of the MAC layer reaches the maximum number of times , Confirm that a beam failure has occurred. The maximum number of times can be configured by the base station or dynamically adjusted by the UE.

502. The MAC layer determines that the beam fails.

The MAC layer may determine the beam failure according to the first detection result sent by the PHY layer.

For example, the first detection result may include the BLER value of one or more first RSs. If the first threshold corresponding to the BLER is 0.1, then the MAC layer determines that there are 3 BLER values in the first check result that exceed 0.1, then Make sure the beam failed.

Of course, if the MAC layer determines that the current beam has not failed according to the first detection result, the subsequent steps 503-506 may also be unnecessary.

503. The MAC layer delivers first indication information to the PHY layer.

After the MAC layer determines that the current beam has a beam failure, the MAC layer issues first indication information to the PHY layer, indicating that the physical PHY layer will be instructed to report one or more candidate RSs that meet the conditions.

The one or more second RSs are configured by the base station for the UE and used to measure RSs of candidate beams. Each second RS of the one or more second RSs may correspond to one RACH resource. It can be understood that each second RS is bound to one RACH resource. The RACH resource corresponding to each second RS can be used by the UE to initiate random access on the RACH resource corresponding to the candidate RS.

504. The PHY layer determines that the first information meets the trigger condition.

After determining that the beam fails, the PHY layer can obtain the first information and determine whether the first information meets the trigger condition.

The first information is similar to the first information in the foregoing step 402. For example, the first information may include: the number of times the UE detects one or more first RSs, whether the UE determines candidate RSs, and the UE detects one or more first RSs. RS period and so on.

Correspondingly, the trigger condition is similar to the trigger condition in step 402, and corresponds to the first information. For example, the trigger condition may include: the number of times that the UE detects the first RS is less than 5 times, or the period of detecting the first RS is less than 10 slots, or the average value of the detected BLER is less than 0.15, or the candidate condition has not been detected yet Candidate RS and so on.

Exemplarily, the trigger condition may be determined according to a radio resource control (Radio resource control, RRC) configuration, or may be dynamically adjusted and determined by the UE according to its own state, and so on. For example, according to the sensor to determine the UE posture, if the change of the UE posture is small, the trigger threshold of the detection times can be lowered. At this time, since the UE has a stable posture and the measurement uncertainty is small, it is not easy for the UE to trigger the continued detection process at this time.

Exemplarily, in addition to the RRC configuration, the detection result of the second RS may also be combined to determine whether the trigger condition is satisfied. For example, if no candidate RS that meets the candidate condition is detected, or the parameter value of the candidate RS that meets the candidate condition does not exceed a preset value, then the trigger condition is satisfied.

It should be noted that if the first information does not include the conditions related to the candidate RS, the embodiment of the present application does not limit the execution order of step 503 and step 504, and step 503 may be performed first, or step 504 may be performed first. Step 503 and step 504 can also be performed at the same time, which can be specifically adjusted according to actual application scenarios.

It should also be noted that after the MAC sends the first indication information to the PHY layer, the PHY layer may detect the one or more second RSs, and use the second RS meeting the candidate condition as the candidate RS. For example, the candidate condition may be the seventh RSRP threshold of the second RS, and the seventh threshold may be the same as or different from the sixth threshold in the suspension condition.

In the embodiment of the present application, when the first detection of the first RS in step 501 determines that a beam failure has occurred, the UE can continue to determine whether a trigger condition is met, and the trigger condition can be whether the RRC configuration of the UE meets a certain condition , Or whether the UE's detection of the beam failure detection signal meets a certain condition, or whether the UE's measurement of the candidate reference signal meets a certain condition, etc. If the trigger condition is met, the UE considers that it can continue to detect the beam failure detection reference signal. Therefore, even after the first RS is detected and determined that the beam failed for the first time, it can continue to check whether the trigger condition is satisfied, and further re-detect the first RS to avoid false detection. The delay of initiating random access on the RACH resource corresponding to the candidate RS improves the efficiency of data transmission.

505. The PHY layer detects one or more first RSs again.

After the PHY layer determines the trigger condition satisfied by the first information, the first one or more first RSs can be detected again.

When the PHY layer starts to detect the first RS, a timer can be started, and the PHY layer can detect the first RS before the timer expires.

The configuration of the PHY layer to detect the first RS again may be the same as or different from the configuration of the PHY layer to the first RS in step 501 for the first time. For example, when the first RS detects again, the detection period can be 10 slots, and the maximum number of detections can be 5 times.

Optionally, in some possible implementation manners, when the PHY layer detects one or more first RSs again, the second information can also be acquired at the same time. If the second information meets the suspension condition, the communication to the first RS can be suspended. Detect again, and then initiate random access on the RACH resource corresponding to the candidate RS, and perform data transmission through the new beam. It can be understood that when the current beam communication quality is not good, or after the RACH with better communication quality is determined, random access can be initiated on the RACH resource corresponding to the candidate RS to perform data transmission through the new beam and improve data transmission The reliability and the efficiency of data transmission.

If the re-detection of the first RS is triggered, the UE can temporarily suspend the subsequent BFR process. During the suspension of the BFR procedure, the UE still detects one or more first RSs. At the same time, the UE can still measure candidate reference signals. However, during the suspension of the BFR process, the PHY layer temporarily does not provide the MAC layer with candidate RSs that meet the conditions.

506. The number of times that the PHY layer detects that the BLER is less than the first threshold is not less than the first preset number of times, and notifies the MAC layer that the beam has recovered.

If the PHY layer detects the first RS again, if the number of times the PHY layer detects that the BLER of the first RS is less than the first threshold is not less than the first preset number of times, it can determine the beam to recover and send an instruction to the MAC layer Data, the indication data is used to notify the MAC layer that the re-detected detection result meets the first preset condition, and then the current beam can be used for data transmission.

For example, if it is detected that the BLER of the first RS is less than 0.1 more than 3 times, it can be determined that the current beam has been restored, and the current beam can be used for data transmission, and the MAC layer can be notified.

Optionally, in some possible implementation manners, if the PHY layer does not detect that the number of times the BLER is less than the first threshold is not less than the first preset number of times before the timer expires, it can be determined that the current beam has failed, and the PHY layer will The RS information is reported to the MAC layer, so that the UE can initiate random access on the RACH resource corresponding to the candidate RS for normal data transmission. Generally, after the first detection of the first RS determines the beam incident, if the first information meets the trigger condition, the BFR process can be suspended and the first RS is detected again. If it is determined that the current beam fails through the detection again, the subsequent BFR process can be continued.

Optionally, in some possible implementation manners, if the second detection result that satisfies the first preset condition is not detected before the timing expires, it may be determined that the beam has failed. For example, before the timer expires, if it is detected that the average value of the BLER is 0.12, which is greater than the first threshold 0.1, and is not within the error range, it can be determined that the beam has failed.

Optionally, in some possible implementation manners, if the MAC layer does not receive the indication data sent by the PHY layer before the timer expires, it may also be determined that a beam failure has occurred.

Optionally, in some possible implementation manners, if the MAC layer does not receive the instruction data sent by the PHY layer before the timer expires, the MAC layer may deliver the instruction information to the PHY layer, including the first instruction information or the first instruction information. 2. Indication information, the indication information is used to instruct the PHY layer to report the candidate RS, so that the UE can initiate random access on the RACH resource corresponding to the candidate RS, and continue the subsequent BFR process.

Optionally, in some possible implementation manners, after the MAC layer detects the first RS and determines that the beam fails for the first time in step 501, the PHY layer will issue the first indication information. After that, even if the PHY layer determines the candidate RS, it does not need to report to the MAC. If it is detected again that the beam has recovered, there is no need to report the candidate RS to the MAC. If the suspension condition is met, or the beam fails to be determined by re-detection, the PHY layer may report the candidate RS to the MAC layer and initiate random access on the new RACH resource. Generally, if the second information satisfies the suspension condition, the beam communication quality may be poor, or the communication quality of the beam corresponding to the candidate RS is better. Therefore, random access can be initiated on the new RACH resource to notify the base station UE to switch The beam can improve communication quality and improve the stability of data transmission. Therefore, the embodiment of the present application can delay reporting the candidate RS to the MAC layer in the same manner as the PHY layer to suspend the BFR process. For example, in the PHY layer delay report, after the MAC layer determines that a beam failure has occurred, it will send an instruction to the PHY layer to instruct the PHY layer to provide one or more candidate RSs that meet the threshold condition and RSRP of the candidate RSs. At this time, in the process of continuing the detection of the PHY layer, even if a candidate RS meeting the threshold condition is found, it will not be provided to the MAC layer temporarily, so that the MAC layer can not initiate RACH and make the BFR process in a suspended state.

If the MAC layer or the PHY is provided with a counter that counts the detection results of the first RS, the counter can be cleared after it is determined that the MAC beam has recovered, random access is initiated on the RACH resource corresponding to the candidate RS, or the suspension condition is met.

In the embodiment of the present application, the PHY layer of the UE may detect the first RS and notify the MAC layer of the detection result. Even if it is determined that the beam fails in the first RS detection for the first time, the first RS can be detected again in a scenario where the trigger condition is met. If it is detected that the beam has recovered, the current beam can be used for data transmission. Even if a false detection occurs in the first detection, the beam can be restored by detecting again. This allows the UE to continue data transmission without initiating random access on the RACH resource corresponding to the candidate RS, which can avoid the time delay generated when accessing a new RACH and improve user experience. It can be understood that, after the MAC layer determines that a beam failure occurs, the embodiment of the present application can still detect the beam failure detection reference signal for a period of time before initiating the RACH, so as to prevent the error of the beam failure caused by the drastic change of the UE channel. Detection to avoid unnecessary BFR delay.

In the foregoing embodiment of FIG. 5, the MAC layer transmits the information of the second RS to the PHY layer after detecting the first RS to determine the beam failure for the first time. In another possible manner, the MAC may send the second RS information to the PHY layer after the PHY detects and determines that the beam has failed again. Refer to Figure 6 for a schematic diagram of specific application scenarios, which can include:

601. The PHY layer detects one or more first RSs.

602. The MAC layer determines that the beam fails.

603. The PHY layer determines that the first information meets the trigger condition.

604. The PHY layer detects one or more first RSs again.

Steps 601-604 in the embodiment of this application are similar to the

aforementioned steps

501, 502, 504, and 505, and will not be repeated here.

605. The PHY layer reports the detection result to the MAC layer.

When the PHY detects the first RS again, it may periodically detect one or more first RSs, and the detection result obtained by detecting the first RS each time may be reported to the MAC layer.

For example, the period for the PHY layer to detect the first RS is 10 slots, and the BLER of the first RS can be detected 3 times, and the BLERs obtained by the 3 detections are 0.1, 0.11, and 0.1 respectively. After each detection of the BLER value, the PHY layer reports it to the MAC.

For example, a counter can be set on the MAC layer, and each time a detection result reported by the PHY layer is received, the counter is increased by 1.

Optionally, in some possible implementation manners, when the PHY re-detects the first RS, the second information can be acquired at the same time. If the second information meets the suspension condition, the re-detection of the first RS can be suspended, and Report to the MAC layer. The MAC layer sends the information of one or more second RSs to the PHY layer, and the PHY layer determines candidate RSs that meet the candidate conditions from the one or more second RSs, and then reports to the MAC layer. Then, random access is initiated on the RACH resource corresponding to the candidate RS to use the new RACH resource for data transmission.

606. The MAC layer determines beam recovery.

A counter can be set on the MAC layer. When the value of the counter does not exceed the four preset times, that is, the maximum detection times, and the result of the detected BLER average value is within the error range, the MAC can determine that the current beam has recovered .

For example, if the first threshold corresponding to the BLER of the first RS is 0.1, and the period for the PHY layer to detect the first RS is 10 slots, the BLER of the first RS can be detected 3 times, and the BLERs obtained from the 3 detections are 0.1 respectively. , 0.11, 0.1. In addition, the allowable measurement error is 0.05. The average BLER of the three detections is 0.103, which is within the allowable error range. Therefore, it can be understood that the detection result of the re-detection of the first RS meets the first preset condition, namely The current beam has been restored.

After the MAC layer determines that the beam has recovered, it can clear the counter and continue to use the current beam for data transmission. The MAC layer can decide whether to clear the counter according to the detection result of the PHY layer, which eliminates the need for signaling interaction between the PHY layer and the MAC layer, and reduces the complexity of UE implementation.

In addition, in some possible implementation manners, if the value of the counter exceeds the fourth preset number of times and the average value of BLER is not within the error range, or the BLER value exceeding the first threshold is not detected, it can be determined that the current The beam has failed. At this time, the MAC layer can send information about one or more second RSs to the PHY layer. The PHY layer detects one or more second RSs to determine candidate RSs that meet the candidate conditions, and then the PHY layer reports the candidates to the MAC layer. RS information, random access is initiated on the RACH resource corresponding to the candidate RS. Therefore, the MAC can delay the delivery of the second RS information to the PHY layer, and after re-detecting and determining that the current beam fails, the MAC can deliver the second RS information to the PHY layer. If the beam recovers, the PHY does not need to detect the second RS, which can reduce the work flow of the PHY and reduce the complexity of the UE.

Optionally, in some possible implementation manners, a timer may also be set on the MAC layer. If the MAC layer does not receive a second detection result that meets the first preset condition before the timer expires, the MAC may also determine The current beam failed.

Optionally, in some possible implementation manners, after the MAC layer determines that a beam failure has occurred, the MAC layer may issue the first indication information to the PHY layer, or, after the MAC layer determines that the second information satisfies the suspension condition, the MAC layer The layer delivers the second indication information to the PHY layer. The PHY layer determines a candidate RS that meets the candidate conditions from one or more second RSs, and the PHY layer can report the candidate RS to the MAC layer, so that the UE initiates random access on the RACH resource corresponding to the candidate RS. The UE can perform data transmission.

In the embodiment of the present application, the PHY layer of the UE may detect the first RS and notify the MAC layer of the detection result. Even if it is determined that the beam fails in the first RS detection for the first time, the first RS can be detected again in a scenario where the trigger condition is met. If it is detected that the beam has recovered, the current beam can be used for data transmission. Even if a false detection occurs in the first detection, the beam can be restored by detecting again. This allows the UE to continue data transmission and does not need to initiate a new random access on the new RACH resource, which can avoid the delay generated when initiating random access and improve user experience.

The beam detection method provided by this application is described in detail above, and the device provided by this application will be further described below. The beam detection apparatus provided in this application may include various terminal devices, such as the aforementioned UE. The beam detection device may be an access network device, or a chip or chip system located on the access network device. The beam detection device may be used to perform the steps performed by the UE in the embodiment shown in FIG. 1A-6. You can refer to the foregoing Relevant description in the method embodiment.

Referring to FIG. 7, the beam detection apparatus may include: a processing unit 701;

The processing unit 701 is configured to measure one or more first reference signals RS to obtain a first detection result;

The processing unit 701 is further configured to obtain first information when the UE determines that the current beam status is beam failure according to the first detection result, where the first information includes the first configuration parameter and/or the first detection result;

The processing unit 701 is further configured to, if the first information meets the trigger condition, measure one or more first RS again to obtain a second detection result, where the second detection result includes one or more parameter values corresponding to the first RS , The parameter value includes at least one of the block error rate BLER, the signal-to-noise ratio SINR, the reference signal received power RSRP, the reference signal received power RSRP, or the received strength indicator RSSI. When the first information includes the first configuration parameter, the trigger condition includes the first configuration parameter. A configuration parameter is less than a preset parameter value, and when the first information includes the first detection result, the trigger condition includes that the parameter value corresponding to the first detection result is within the preset parameter range;

The processing unit 701 is further configured to continue to use the current beam for data transmission if the second detection result meets the first preset condition.

In one implementation,

In another implementation,

In another implementation manner, after the processing unit 701 determines that the current beam status is beam failure according to the first detection results of one or more first RSs, the processing unit 701 is further configured to:

In another implementation manner, after the processing unit 701 detects one or more first RSs again, the processing unit 701 is further configured to:

If the processing unit 701 determines that the second information satisfies the suspension condition, the detection of one or more first RSs is suspended, the RACH resource indicated by the candidate RS is determined, and random access is initiated on the RACH resource.

The RSRP of the candidate RS is higher than the sixth threshold; or,

The BLER of the candidate RS is less than the seventh threshold; or,

The SINR of the candidate RS is greater than the eighth threshold; or,

The RSRQ of the candidate RS is greater than the ninth threshold; or,

The RSSI of the candidate RS is greater than the tenth threshold;

In another implementation manner, the processing unit 701 is further configured to:

The PHY layer reports the candidate RS information to the MAC layer of the UE.

This application also provides a beam detection device 800. Please refer to FIG. 8. In the embodiment of the application, the beam detection device is an embodiment. The beam detection device may be an access network device, or a chip or a chip located on the access network device. In the system, the beam detection device can be used to perform the steps performed by the UE in any of the embodiments shown in FIGS. 1A-6, and reference may be made to the relevant description in the above method embodiment.

The beam detection device 800 includes a processor 801, a memory 802, and an input and output device 803.

In a possible implementation manner, the processor 801, the memory 802, and the input/output device 803 are respectively connected to a bus, and computer instructions are stored in the memory.

The processing unit 701 in the foregoing embodiment may specifically be the processor 801 in this embodiment, so the specific implementation of the processor 801 will not be described again.

The present application provides a chip system including a processor for supporting the beam detection device to implement the functions involved in the above aspects, for example, sending or processing the data and/or information involved in the above methods. In a possible design, the chip system further includes a memory, and the memory is used to store necessary program instructions and data. The chip system may be composed of chips, or may include chips and other discrete devices.

In another possible design, when the beam detection device is a terminal, a base station, or a chip in the device, the chip includes a processing unit and a communication unit. The processing unit may be a processor, and the communication unit may, for example, It is the input/output interface, pin or circuit, etc. The processing unit can execute the computer-executable instructions stored in the storage unit, so that the chip in the terminal or the base station, etc. executes the steps of the method executed by the UE in any one of the embodiments in FIGS. 1A-6. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the terminal or base station, such as read-only Memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.

The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a computer, the method process related to the beam detection device in any of the foregoing method embodiments is implemented. Correspondingly, the computer may be the aforementioned beam detection device. The beam detection device includes an access network device, a group control device or a PCF entity.

The embodiment of the present application also provides a computer program or a computer program product including a computer program. When the computer program is executed on a computer, the computer will enable the computer to implement the beam detection in any of the foregoing method embodiments. Device-related method flow. Correspondingly, the computer may be the aforementioned beam detection device.

In each of the above-mentioned embodiments in FIGS. 1A-6, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website site, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

It should be understood that the processor mentioned in this application may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSPs), and application specific integrated circuits (Application Specific Integrated Circuits). Integrated Circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the number of processors in the present application may be one or multiple, and may be specifically adjusted according to actual application scenarios. This is only an exemplary description and is not limited. The number of memories in the embodiments of the present application may be one or multiple, and may be specifically adjusted according to actual application scenarios. This is only an exemplary description and is not limited.

It should also be noted that when the beam detection device includes a processor (or processing unit) and a memory, the processor in the present application may be integrated with the memory, or the processor and the memory may be connected through an interface. It is adjusted according to actual application scenarios and is not limited.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be realized in the form of hardware or software functional unit.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which can be a personal computer, a server, or other network devices, etc.) execute all or part of the steps of the methods described in the various embodiments in Figures 1A-6 of this application.

It should be understood that the storage medium or memory mentioned in this application may include volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (Synch link DRAM, SLDRAM) and Direct Rambus RAM (DR RAM).

It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, a person of ordinary skill in the art should understand that: The technical solutions recorded in the embodiments are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

A beam detection method, characterized in that it comprises:

The user equipment UE obtains the first configuration parameter;

The UE measures one or more first reference signals RS to obtain a first detection result;

When the UE determines that the current beam status is beam failure according to the first detection result and the first configuration parameter,

The UE determines whether a trigger condition is satisfied according to first information, where the first information includes the first configuration parameter and/or the first detection result;

If the first information satisfies the trigger condition, the UE continues to measure the one or more first RSs to obtain a second detection result, where the second detection result includes the one or more first RS corresponding The parameter value of the parameter value includes at least one of a block error rate BLER, a signal-to-noise ratio SINR, a reference signal received power RSRP, a reference signal received quality RSRQ, or a received strength indicator RSSI;

If the second detection result meets the first preset condition, the UE continues to use the current beam for data transmission.
The method according to claim 1, wherein the first preset condition comprises:

The number of times that the UE detects that the parameter value corresponding to the one or more first RSs is in the first preset range is not less than the first preset number of times.
The method according to claim 2, wherein the first preset range includes at least one of the following:

If the second detection result includes the BLER, the BLER is less than the first threshold; or,

If the second detection result includes the SINR, the SINR is greater than a second threshold; or,

If the second detection result includes the RSRP, the RSRP is greater than a third threshold; or,

If the second detection result includes the RSRQ, the RSRQ is greater than a fourth threshold; or,

If the second detection result includes the RSSI, the RSSI is greater than a fifth threshold.
The method according to claim 2 or 3, wherein the method further comprises:

If the UE detects that the number of times that the parameter value of the first RS is within the first preset range is not less than the first preset number of times, the UE generates indication data, and the indication data is determined by the PHY layer of the UE. Sent to the media intervention control MAC layer of the UE, the indication data is used to indicate that the second detection result satisfies the first preset condition.
The method according to claim 2 or 3, wherein the method further comprises:

After the UE detects the first RS at any time to obtain the parameter value, the parameter value is reported by the PHY layer of the UE to the MAC layer of the UE;

When the number of times that the parameter value is in the first preset range exceeds the first preset number, the UE determines that the second detection result meets the first preset condition.
The method according to any one of claims 1-5, characterized in that,

When the first information includes the first detection result, the trigger condition includes at least one of the following:

The first detection result combined with the measurement error meets the first preset condition; or,

The average value of the parameter value in the first detection result in the first preset period is within the second preset range; or,

The number of times that the parameter value in the first detection result is not in the third preset range within the first preset period is less than the second preset number;

When the first information includes the first configuration parameter, the trigger condition includes at least one of the following:

If the first configuration parameter includes the period during which the UE detects the one or more first RSs to obtain the first detection result, the period does not meet the preset period; or,

If the first configuration parameter includes the number of times that the UE detects the one or more first RSs to obtain the first detection result, the number of times is less than the third preset number of times.
The method according to any one of claims 1-6, wherein after the UE determines that the current beam status is beam failure according to the first detection results of one or more first RSs, the method further include:

The UE detects one or more second RSs, and uses a second RS meeting candidate conditions among the one or more second RSs as candidate RSs, and the candidate RSs are used to indicate random access channel RACH resources .
The method according to claim 7, wherein after the UE detects the one or more first RSs again, the method further comprises:

Acquiring, by the UE, second information, where the second information includes the second detection result and/or second configuration parameters;

If the UE determines that the second information satisfies the suspension condition, the UE suspends the detection of the one or more first RSs, the UE determines the RACH resources indicated by the candidate RS, and sends the information to the RACH Random access is initiated on the resource.
The method according to claim 8, wherein if the second information includes the second detection result, the suspension condition includes at least one of the following:

The RSRP of the candidate RS is higher than the sixth threshold; or,

The BLER of the candidate RS is less than the seventh threshold; or,

The SINR of the candidate RS is greater than the eighth threshold; or,

The RSRQ of the candidate RS is greater than the ninth threshold; or,

The RSSI of the candidate RS is greater than the tenth threshold;

If the second information includes the second configuration parameter, the suspension condition includes at least one of the following:

The second configuration parameter includes the one or more second RSs, and the UE detects that the one or more second RSs include the candidate RS; or,

The second configuration parameter includes a timer, and the UE does not detect that the second detection result meets the first preset condition before the timer expires; or,

The second configuration parameter includes a fourth preset number of times, the UE detects that the one or more first RSs again exceed the fourth preset number of times, and does not detect that the second detection result satisfies the The first preset condition.
The method according to claim 8 or 9, wherein the UE detects one or more second RSs, and uses a second RS that meets a candidate condition among the one or more second RSs as a candidate RS, including:

The physical PHY layer of the UE detects the one or more second RSs, and uses the second RS meeting the candidate condition among the one or more second RSs as the candidate RS.
The method of claim 10, wherein the method further comprises:

After the UE determines that the current beam status is beam failure according to the first detection result, the UE generates first indication information, and the first indication information is transferred from the MAC layer of the UE to the PHY layer of the UE. Issued, the first indication information is used to instruct the PHY layer of the UE to report to the MAC layer of the UE the information of candidate RSs that meet the candidate conditions to the MAC layer of the UE;

After the UE determines that the second information satisfies the suspension condition, the UE determines the information of the candidate RS, and the information of the candidate RS is reported by the PHY layer of the UE to the MAC layer of the UE.
The method of claim 10, wherein:

After the UE determines that the second information satisfies the suspension condition, the UE generates second indication information, and the second indication information is delivered by the MAC layer of the UE to the PHY layer of the UE, and The second indication information is used to instruct the PHY layer to report one or more second RSs that meet the candidate condition to the MAC layer to the MAC layer;

The UE determines the information of the candidate RS, and the information of the candidate RS is reported by the PHY layer of the UE to the MAC layer of the UE.
The method according to any one of claims 7-12, wherein the method further comprises:

If the UE determines that the second detection result does not meet the first preset condition, or the UE determines that the first information does not meet the trigger condition, the UE determines the random access corresponding to the candidate RS RACH resources, and initiate random access on the RACH resources.
A beam detection device, characterized by comprising: a processing unit;

The processing unit is configured to execute the method according to any one of claims 1-13.
A beam detection device, characterized by comprising: a processor and a memory; the memory is used to store a program;

The processor is used to execute the following steps:

The user equipment UE obtains the first configuration parameter;

The UE measures one or more first reference signals RS to obtain a first detection result;

When the UE determines that the current beam status is beam failure according to the first detection result and the first configuration parameter,

The UE determines whether a trigger condition is satisfied according to first information, where the first information includes the first configuration parameter and/or the first detection result;

If the first information satisfies the trigger condition, the UE continues to measure the one or more first RSs to obtain a second detection result, where the second detection result includes the one or more first RS corresponding The parameter value includes at least one of a block error rate BLER, a signal-to-noise ratio SINR, a reference signal received power RSRP, a reference signal received power RSRP, or a received strength indicator RSSI;

If the second detection result meets the first preset condition, the UE continues to use the current beam for data transmission.
The beam detection device according to claim 15, wherein the first preset condition comprises:

The number of times that the UE detects that the parameter value corresponding to the one or more first RSs is in the first preset range is not less than the first preset number of times.
The beam detection device according to claim 16, wherein the first preset range includes at least one of the following:

If the second detection result includes the BLER, the BLER is less than the first threshold; or,

If the second detection result includes the SINR, the SINR is greater than a second threshold; or,

If the second detection result includes the RSRP, the RSRP is greater than a third threshold; or,

If the second detection result includes the RSRQ, the RSRQ is greater than a fourth threshold; or,

If the second detection result includes the RSSI, the RSSI is greater than a fifth threshold.
The beam detection device according to any one of claims 15-17, wherein:

When the first information includes the first detection result, the trigger condition includes at least one of the following:

The first detection result combined with the measurement error meets the first preset condition; or,

The average value of the parameter value in the first detection result in the first preset period is within the second preset range; or,

The number of times that the parameter value in the first detection result is not in the third preset range within the first preset period is less than the second preset number;

When the first information includes the first detection result, the trigger condition includes at least one of the following:

If the first configuration parameter includes the period during which the UE detects the one or more first RSs to obtain the first detection result, the period does not meet the preset period; or,

If the first configuration parameter includes the number of times that the UE detects the one or more first RSs to obtain the first detection result, the number of times is less than the third preset number of times.
A beam detection device, comprising a processor and a memory, wherein the processor is coupled with the memory, and is used to read and execute the instructions stored in the memory, so as to implement any one of claims 1-13. step.
The device according to claim 19, wherein the beam detection device is a chip or a system on a chip.