WO2020182155A1

WO2020182155A1 - Multi-beam tracking method and apparatus

Info

Publication number: WO2020182155A1
Application number: PCT/CN2020/078809
Authority: WO
Inventors: 竺旭东; 秦博雅; 朱有团
Original assignee: 华为技术有限公司
Priority date: 2019-03-11
Filing date: 2020-03-11
Publication date: 2020-09-17
Also published as: CN111682889A

Abstract

Provided in the present application are a multi-beam tracking method and apparatus. The multi-beam tracking method comprises: acquiring a beam set that is maintained for a UE, the beam set comprising a first sub-set and a second sub-set, the first sub-set comprising a current service beam of the UE, the second sub-set comprising M alternative beams, the M alternative beams being the first M beams among K beams reported by the UE that are sorted from longest to shortest distance from the current service beam, M and K being natural numbers, and M<K; selecting a beam from the beam set of the UE, and transmitting information on the selected beam. The present application increases the success rate of beam switching, reduces the probability of communication interruption, and may further achieve multi-beam transmission and increase the communication performance of a UE.

Description

Multi-beam tracking method and device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with the application number 201910180280.1 and the application name "Multi-beam tracking method and device" on March 11, 2019, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to communication technology, and in particular to a multi-beam tracking method and device.

Background technique

In the New Radio (NR), a millimeter wave (Millimeter Wave, mmWave) frequency band greater than 6 GHz is introduced. Commonly used frequency points include 28 GHz, 39 GHz, or 60 GHz. When the mmWave frequency band is applied to wireless mobile communications, due to the wave The length of the signal causes the signal to decay quickly when propagating in space. Therefore, in order to take advantage of the small size of the mmWave antenna (the antenna size is proportional to the wavelength), the base station (Base Station, BS) side often uses an antenna array to form beamforming (BF), so that the signal forms an energy convergence in space , And accurately point to the direction of the user equipment (User Equipment, UE), and improve the signal to noise ratio (Signal to Noise Ratio, SNR) of the signal received by the UE. Figure 1 shows an example of a mmWave antenna array with 8 rows and 8 columns cross-polarized.

In order to improve the coverage and capacity of the mmWave frequency band, BS will continue to expand the size of the antenna array and increase the number of antennas. Correspondingly, the coverage of the formed beam in the horizontal and vertical directions will become smaller and smaller. Figure 2 shows a typical 3-sector coverage scenario, each sector needs to cover an area of 120° horizontally and 30° vertical, and the BS generates N=4×8=32 beams for coverage.

In the related art, after the UE accesses the cell, it sends and receives data through the serving beam. When the performance of the serving beam deteriorates rapidly, for example, when pedestrians or vehicles are blocked between the BS and the UE, failure to select a suitable beam will cause communication interruption. The UE can only follow the process of link failure and re-access, thereby reducing communication performance.

Summary of the invention

The present application provides a multi-beam tracking method and device to improve the success rate of beam switching, reduce the probability of communication interruption, and can also realize multi-beam transmission and improve the communication performance of the UE.

In a first aspect, the present application provides a multi-beam tracking method, including: acquiring a beam set maintained for a user equipment UE, the beam set includes a first subset and a second subset, and the first subset includes the The current serving beam of the UE, the second subset includes M candidate beams, and the M candidate beams are the K beams reported by the UE in order from longest to shortest distance from the current serving beam For the first M beams of, M and K are natural numbers, and M<K; a beam is selected from the beam set of the UE, and information is transmitted on the selected beam.

This application uses a beam that is well isolated from the current serving beam as a candidate beam. On the one hand, the beam can be switched quickly, efficiently and stably when the performance of the current serving beam is deteriorated. On the other hand, different antenna sub-arrays of the BS can adopt isolation Better different beams (current serving beams and candidate beams) to transmit information to achieve multi-beam diversity transmission, improve the transmission robustness of mobile or edge UEs, or achieve multi-beam multi-stream transmission, and improve low-speed or near-point UE transmission rate.

In a possible implementation manner, the selecting a beam from the beam set of the UE and transmitting information on the selected beam includes: when the communication of the current serving beam is interrupted, from the first One beam is selected as the new serving beam in the second subset, and beam switching signaling is sent to the UE. The beam switching signaling includes the identification information of the new serving beam; and the UE is based on the new serving beam. transmit information.

In this application, when the BS finds that the communication of the current service beam is interrupted, it will select a beam from the second subset as the new service beam. Because the beam in the second subset is isolated from the current service beam, even if the current service beam is blocked The performance deteriorates rapidly due to other reasons, and the new service beam selected by the BS will not be affected for the same reason, so that the UE can quickly switch to the new service beam, and the success rate of the beam switching is high, reducing the probability of communication interruption, and ensuring UE's communication performance.

In a possible implementation, the selecting a beam from the beam set of the UE, and transmitting information on the selected beam includes: selecting N beams from the second subset, and The current serving beam and the N beams transmit the same information, where N is a natural number, and N≤M.

In a possible implementation, the selecting a beam from the beam set of the UE, and transmitting information on the selected beam includes: selecting N beams from the second subset, and Different information is transmitted on the current serving beam and the N beams, where N is a natural number, and N≤M.

In a possible implementation manner, before the acquiring the beam set maintained for the UE, it further includes: when the UE initially accesses, scanning multiple beams in the beam codebook one by one to send synchronization and broadcast information; The response information sent by the UE determines the beam corresponding to the uplink resource carrying the response information as the current serving beam of the UE, and the response information is sent after the UE demodulates the synchronization and broadcast information information.

In a possible implementation manner, before the acquiring the beam set maintained for the UE, the method further includes: when the UE is in the access state, sending measurement report indication information to the UE, where the measurement report indication information includes Identification information of multiple beams; receiving identification information of K beams and reference signal received power RSRP reported by the UE, where the K beams are the first K beams after the multiple beams are sorted from high to low according to RSRP .

In a possible implementation manner, the current serving beam is the beam with the highest RSRP among the K beams.

In a possible implementation manner, the measurement report indication information is cell-level measurement report indication information, and the multiple beams are multiple beams in a beam codebook.

In a possible implementation manner, the measurement report indication information is user-level measurement report indication information, and the multiple beams are multiple beams in the beam set.

In a possible implementation manner, the beam set further includes a third subset, the third subset includes a plurality of tracking beams, and a distance between the tracking beam and the current serving beam is less than a set value.

In this application, the BS puts the beam that is close to the current serving beam as the tracking beam into the third subset of the beam set, which is suitable for tracking the continuous movement of the serving beam.

In a second aspect, the present application provides a multi-beam tracking device, including: an acquisition module, configured to acquire a beam set maintained for a user equipment UE, the beam set includes a first subset and a second subset, the first The subset includes the current serving beam of the UE, the second subset includes M candidate beams, and the M candidate beams are the K beams reported by the UE according to the distance from the current serving beam. For the first M beams sorted from long to short, M and K are natural numbers, and M<K; the transmission module is used to select a beam from the beam set of the UE and transmit information on the selected beam.

In a possible implementation manner, the transmission module is specifically configured to select a beam from the second subset as a new service beam when the communication of the current service beam is interrupted, and send the beam to the UE Handover signaling, where the beam switching signaling includes identification information of the new service beam; and transmits information with the UE based on the new service beam.

In a possible implementation, the transmission module is specifically configured to select N beams from the second subset, and transmit the same information on the current serving beam and the N beams, where N is a natural number , N≤M.

In a possible implementation manner, the transmission module is specifically configured to select N beams from the second subset, and transmit different information on the current serving beam and the N beams, where N is a natural number , N≤M.

In a possible implementation, the transmission module is further configured to scan multiple beams in the beam codebook one by one to send synchronization and broadcast information when the UE initially accesses; to receive response information sent by the UE And determining the beam corresponding to the uplink resource carrying the response information as the current serving beam of the UE, and the response information is information sent by the UE after demodulating the synchronization and broadcast information.

In a possible implementation manner, the transmission module is further configured to send measurement report indication information to the UE when the UE is in the access state, where the measurement report indication information includes identification information of multiple beams Receiving the identification information of the K beams and the reference signal received power RSRP reported by the UE, where the K beams are the first K beams after the multiple beams are sorted from high to low according to the RSRP.

In the third aspect, this application provides a communication device, including:

One or more processors;

Memory, used to store one or more programs;

When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of the above-mentioned first aspects.

In a fourth aspect, the present application provides a computer-readable storage medium that stores instructions, and when the instructions are run on a computer, they are used to execute any one of the foregoing method.

In a fifth aspect, the present application provides a computer program, when the computer program is executed by a computer, it is used to execute the method described in any one of the above-mentioned first aspects.

Description of the drawings

Figure 1 is a schematic diagram of a mmWave antenna array;

Figure 2 is a schematic diagram of multi-beam coverage;

3 is a flowchart of an embodiment of a multi-beam transmission method according to this application;

Figure 4 is a schematic diagram of beam switching;

Figure 5 is a schematic diagram of multi-beam transmission;

FIG. 6 is a schematic structural diagram of an embodiment of a multi-beam tracking device according to this application;

FIG. 7 is a schematic structural diagram of an embodiment of a communication device of this application.

detailed description

In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application. , Not all examples. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

FIG. 3 is a flowchart of an embodiment of a multi-beam tracking method according to this application. As shown in FIG. 3, the method in this embodiment may be executed by a BS, and the multi-beam tracking method includes:

Step 301: Obtain a beam set maintained for the UE.

The beam set in this application includes a first subset and a second subset. The first subset includes the current serving beam of the UE. Generally, the first subset includes only this beam, and the second subset includes M candidate beams. The isolation between these M candidate beams and the current serving beam is good. When defining the isolation, the BS must consider the communication performance of the candidate beams and the interference between the candidate beams and the current serving beam. A beam is a beam that the UE can measure its Reference-Signal Received Power (RSRP) and is as far away as possible from the current serving beam, so that the UE will not switch to an alternative beam when the performance of the current serving beam deteriorates. Have an impact on communications. The better isolation in this application can be measured by the distance between the candidate beam and the current serving beam. The distance can be the Euclidean distance in the angle domain, that is, the spatial pointing angle of the candidate beam and the current serving beam in Europe. Miles away. The distance can also be represented by the displacement vectors of the two beams, which is not specifically limited in this application. The BS reports the K beams to the BS among the K beams reported by the UE (the UE compares the RSRP of the latest measured beams, and selects the identification information of the first K beams sorted from high to low and reports the RSRP to the BS) Sort the distance from the current serving beam from longest to shortest, and take the first M beams as candidate beams. Optionally, the BS may also use the beams whose distance from the current serving beam is greater than or equal to the set value among the K beams reported by the UE as the candidate candidate beams, plus the candidate beam with the higher RSRP among the candidate candidate beams. The beam can then be determined as a candidate beam. The set value can be determined according to factors such as network optimization goals and system parameters.

Step 302: Select a beam from the beam set of the UE, and transmit information on the selected beam.

The BS may select beams in the first subset (that is, the current serving beam) to transmit information, or select candidate beams to transmit information in the second subset, or select beams to transmit information in both the first and second subsets. The following describes three ways of information transmission:

1. When the communication of the current serving beam is interrupted, a beam is selected from the second subset as the new serving beam, and the beam switching signaling is sent to the UE. The beam switching signaling includes the identification information of the new serving beam and is based on the UE. The new service beam transmits information.

In this application, the BS and the UE will transmit information based on a certain beam. If the communication performance of the beam is always good or does not fluctuate too much, the BS will always transmit information with the UE on the beam. However, the communication environment is changing rapidly. Once the performance of the current service beam deteriorates rapidly (for example, due to the occlusion of vehicles, buildings or pedestrians), that is, the communication of the current service beam is interrupted, the BS must notify the UE to switch to the new one as soon as possible. In order to maintain the access status of the UE, otherwise the UE may be disconnected and enter the process of link failure to trigger re-access. Therefore, when the BS finds that the communication of the current serving beam is interrupted, it will select a beam from the second subset (preferably the candidate beam farthest from the current serving beam) as the new serving beam, because the beams in the second subset and the current serving beam The isolation is better (the farthest distance), even if the current service beam and its surrounding beams deteriorate rapidly due to occlusion, the new service beam is less likely to be blocked due to the long distance, so the new service beam is affected. The impact is small or no, so that the UE can quickly switch to a new serving beam, and the success rate of the beam switching is high, reducing the probability of communication interruption, and ensuring the communication performance of the UE. Exemplarily, as shown in FIG. 4, the current serving beam 17 is interrupted due to occlusion, and the BS uses 14 as a new serving beam. The new serving beam 14 can provide good communication services to the UE.

2. Select N beams from the second subset, and transmit the same information on the current serving beam and the N beams, where N is a natural number, and N≤M.

Based on multiple antenna sub-arrays of BS, different sub-arrays can select different beams from the first subset and the second subset, and the beams from the second subset can be selected according to the candidate beams in the second subset and the current serving beam The distance of is selected from long to short, or selected from high to low according to the RSRP of the candidate beams in the second subset. For example, two antenna subarrays select beams from the first subset and the second subset respectively, and these two antenna subarrays transmit the same information to achieve multi-beam diversity transmission; or, five antenna subarrays from the first subset One beam (current serving beam) is selected, and four beams are selected from the second subset. These five antenna sub-arrays transmit the same information to realize multi-beam diversity transmission. Exemplarily, as shown in FIG. 5, the BS simultaneously selects the current serving beam 17 and the beam 14 in the second subset, and transmits the same information on these two beams to realize multi-beam diversity transmission.

3. Select N beams from the second subset, and transmit different information on the current serving beam and N beams, where N is a natural number, and N≤M.

Based on multiple antenna sub-arrays of BS, different sub-arrays can select different beams from the first subset and the second subset, and the beams from the second subset can be selected according to the candidate beams in the second subset and the current serving beam The distance of is selected from long to short, or selected from high to low according to the RSRP of the candidate beams in the second subset. For example, two antenna sub-arrays select beams from the first and second subsets respectively, and these two antenna sub-arrays transmit different information to achieve multi-beam and multi-stream transmission; or, five antenna sub-arrays from the first sub-array One beam (the current serving beam) is selected intensively, and four beams are selected from the second subset. These five antenna sub-arrays transmit different information to realize multi-beam and multi-stream transmission. Exemplarily, as shown in FIG. 5, the BS simultaneously selects the current serving beam 17 and the beam 14 in the second subset, and transmits different information on these two beams to realize multi-beam and multi-stream transmission.

In this application, by using a beam that is well isolated from the current serving beam as a candidate beam, on the one hand, the beam can be switched quickly, efficiently and stably when the performance of the current serving beam is deteriorated, and on the other hand, the different antenna sub-arrays of the BS can be isolated. Different beams (current serving beams and candidate beams) with better degrees to transmit information, realize multi-beam diversity transmission, improve the transmission robustness of mobile or edge UEs, or realize multi-beam and multi-stream transmission, and improve the performance of low-speed or near-point UEs. Transmission rate.

Based on the above technical solution, this application needs to maintain the beam set for the UE in advance, including:

When the UE initially accesses, the BS uses multiple beams in different beam codebooks to send synchronization and broadcast information in a polling manner. During initial access, the UE tries to demodulate synchronization and broadcast information on a certain beam, and then sends response information on the uplink resource corresponding to the demodulated beam. The BS determines the beam corresponding to the uplink resource carrying the response information as the current serving beam of the UE, and maintains the first subset. Exemplarily, as shown in FIG. 2, the BS polls beams 0-31, and the UE completes access on beam 3. Therefore, the BS initializes the first subset={3}, and establishes connection and communication with the UE as soon as possible.

When the UE is in the access state, the BS sends cell-level measurement report indication information to the UE on the current serving beam, and the cell-level measurement report indication information includes identification information of multiple beams in the beam codebook. After the UE receives the cell-level measurement report indication information, it compares the RSRP of the latest measured beam, selects the identification information of the first K beams sorted from high to low, and reports the RSRP to the BS. K can be reported to the BS by the BS. The instructions in the order can also be agreed with the BS in advance. It should be noted that when the UE receives the cell-level measurement report indication information, if the number of newly measured beams exceeds K, the K beams with the highest RSRP are selected for reporting, but if the number of newly measured beams is less than K, then The UE directly reports the latest measured beam. The BS maintains the beam set according to the RSRP of the K beams. If the identification information of the first beam is different from the identification information of the current serving beam, the current serving beam in the first subset is switched to the first beam, and the first beam has K The beam with the highest RSRP in the beams, and at the same time the BS sends beam switching signaling to the UE, and the beam switching signaling includes the identification information of the first beam. The BS also needs to update the beams in the second subset to the first M beams after the K beams are sorted according to the distance from the current serving beam from long to short. Exemplarily, as shown in Figure 2, the identification information of the K=4 beams reported by the UE is {17, 9, 18, 14} (RSRP is arranged from high to low), and the BS finds the optimal beam 17 and the current serving beam 3 is different, so 17 is used as the new serving beam, and the first subset is updated to {17}, and the BS notifies the UE of the beam switching operation. Judging from the 4 beams reported by the UE, beams 9 and 18 are adjacent to the current serving beam 17, and beam 14 is the farthest away from the current serving beam 17, so the BS adds beam 14 to the second subset, while the previous serving beam The distance between 3 and the current serving beam 17 is shorter than beam 14, but farther than

beams

9 and 18. Therefore, the BS can also add beam 3 to the second subset to obtain the second subset = {14, 3}.

After the above UE accesses, the BS instructs the UE to report based on the cell-level beam scanning. This process has a long processing cycle, usually on the order of 100ms. Therefore, in order to improve efficiency, the BS can also instruct the UE to report based on the user-level beam scanning. The processing cycle is on the order of 10ms, that is, user-level measurement report indication information is sent to the UE on the current serving beam. The user-level measurement report indication information includes identification information of multiple beams in the beam set, which is maintained by the BS The latest collection. After the UE receives the user-level measurement report indication information, it compares the RSRP of the latest measured beam, selects the identification information of the first K beams sorted from high to low, and reports the RSRP to the BS. K can be reported to the BS by the BS. The instruction in the command may also be pre-arranged with the BS, and the K in this process may be the same as or different from the K in the above cell-level measurement report process. It should be noted that when the UE receives the user-level measurement report indication information, if the number of newly measured beams exceeds K, the K beams with the highest RSRP are selected for reporting, but if the number of newly measured beams is less than K, then The UE directly reports the latest measured beam. The BS maintains the beam set according to the RSRP of the K beams. If the identification information of the first beam is different from the identification information of the current serving beam, the current serving beam in the first subset is switched to the first beam, and the first beam has K The beam with the highest RSRP in the beams, and at the same time the BS sends beam switching signaling to the UE, and the beam switching signaling includes the identification information of the first beam. The BS also needs to update the beams in the second subset to the first M beams after the K beams are sorted according to the distance from the current serving beam from long to short. Exemplarily, as shown in Figure 2, after cell-level measurement and reporting, the first subset of the beam set maintained by the BS = {17}, the second subset = {14, 3}, among the K beams reported by the UE If the identification information of the optimal beam is 17, then the BS does not need to switch the serving beam of the UE. If the identification information of the optimal beam is not 17, the BS can update the beam set using the above method.

It should be noted that after the UE accesses, a cell-level measurement report is first performed under the instruction of the BS, and then the cell-level measurement report and user-level measurement report can be alternately performed. The specific execution sequence can be performed by the BS according to the access UE’s The quantity, resource usage, etc. are determined dynamically, and this application does not specifically limit this.

Further, the beam set maintained by the BS of this application may also include a third subset. The third subset includes multiple tracking beams. The distance between the tracking beams and the current serving beam is less than a set value. The set value may be based on the network Factors such as optimization goals and system parameters are determined. In the above process of maintaining the beam set, when the BS determines the first subset, the beam in the third subset can be determined according to the distance. The distance can be the Euclidean distance in the angle domain, that is, the candidate beam and the current service The Euclidean distance of the beam pointing angle in space. The distance can also be expressed by the displacement vectors of the two beams, which is not specifically limited in this application. Exemplarily, as shown in Fig. 2, the BS determines the first subset={17} during the cell-level measurement report process, and the BS determines the K=4 beam identification information {17, 9, 18, 14}, where

beams

9 and 18 are adjacent to beam 17, so the third subset = {9, 18}. If the scanning resources are sufficient, the BS can also expand the third subset according to the distance relationship between the beams, for example, the third subset = {9, 18, 16, 25}, or the third subset = {8, 9, 10, 16, 18, 24, 25, 26}. In the process of user-level measurement and reporting by the BS, if the optimal beam 18 reported by the UE is different from the current serving beam 17 in the first subset, the BS updates the first subset = {18}, and the BS should focus on the updated first subset. Set maintenance third subset = {10,19,26,17}, in this case, the previous service beam 17 is updated into the third subset, so the BS cannot place beam 17 when updating the second subset Into the second subset.

In this application, the beam that is close to the current serving beam is put into the third subset of the beam set as the tracking beam, which is suitable for tracking the continuous movement of the optimal beam.

Exemplarily, suppose that the first subset = {3}, the second subset = {14}, and the third subset = {2, 4, 11} in the beam set. The UE is moving due to passing vehicles Blocked, the communication of the current serving beam 3 is interrupted. According to the field test, the gain of beam 3 drops at a speed of about 3dB/10ms. At this time, the beams in the first and third subsets are both blocked, but the beams in the second subset 14 The probability of survival is greater. After the BS finds that the communication of the current serving beam 3 is interrupted, the BS notifies the UE to switch the serving beam to the beam 14, which reduces the probability of communication interruption.

FIG. 6 is a schematic structural diagram of an embodiment of a multi-beam tracking device of this application. As shown in FIG. 6, the device of this embodiment may include: an acquisition module 601 and a transmission module 602. The acquisition module 601 is used to acquire information maintained for the UE. A beam set, the beam set includes a first subset and a second subset, the first subset includes the current serving beam of the UE, the second subset includes M candidate beams, the M The candidate beams are the first M beams sorted from longest to shortest according to the distance from the current serving beam to the K beams reported by the UE. M and K are natural numbers and M<K; the transmission module 602 is used for Select a beam from the beam set of the UE, and transmit information on the selected beam.

The device in this embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 3, and its implementation principles and technical effects are similar, and will not be repeated here.

In a possible implementation manner, the transmission module 602 is specifically configured to select a beam from the second subset as a new service beam when the communication of the current service beam is interrupted, and send to the UE Beam switching signaling, where the beam switching signaling includes identification information of the new serving beam; and transmitting information with the UE based on the new serving beam.

In a possible implementation, the transmission module 602 is specifically configured to select N beams from the second subset, and transmit the same information on the current serving beam and the N beams, where N is Natural number, N≤M.

In a possible implementation, the transmission module 602 is specifically configured to select N beams from the second subset, and transmit different information on the current serving beam and the N beams, where N is Natural number, N≤M.

In a possible implementation, the transmission module 602 is further configured to scan multiple beams in the beam codebook one by one to send synchronization and broadcast information when the UE initially accesses; to receive the response sent by the UE Information, determining the beam corresponding to the uplink resource carrying the response information as the current serving beam of the UE, and the response information is information sent by the UE after demodulating the synchronization and broadcast information.

In a possible implementation, the transmission module 602 is further configured to send measurement report indication information to the UE when the UE is in the access state, and the measurement report indication information includes the identifiers of multiple beams. Information; receiving identification information and RSRP of the K beams reported by the UE, where the K beams are the first K beams after the multiple beams are sorted from high to low according to the RSRP.

FIG. 7 is a schematic structural diagram of an embodiment of a communication device of this application. As shown in FIG. 7, the communication device includes a processor 701, a memory 702, and a communication device 703; the number of processors 701 in the communication device may be one or more. A processor 701 is taken as an example in 7; the processor 701, the memory 702, and the communication device 703 in the communication device may be connected by a bus or other methods. In FIG. 7, the connection by a bus is taken as an example.

As a computer-readable storage medium, the memory 702 can be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the method in the embodiment shown in FIG. 3 of the present application. The processor 701 executes various functional applications and data processing of the communication device by running software programs, instructions, and modules stored in the memory 702, that is, realizes the above-mentioned multi-beam tracking method.

The memory 702 may mainly include a program storage area and a data storage area. The program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the terminal, etc. In addition, the memory 702 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some examples, the memory 702 may further include a memory remotely provided with respect to the processor 701, and these remote memories may be connected to a communication device through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

The communication device 703 can be used to send and receive information.

In a possible implementation manner, the present application provides a computer-readable storage medium that stores an instruction, and when the instruction runs on a computer, it is used to execute the above-mentioned embodiment shown in FIG. 3 Methods.

In a possible implementation manner, this application provides a computer program, when the computer program is executed by a computer, it is used to execute the method in the embodiment shown in FIG. 3.

A person of ordinary skill in the art can understand that all or part of the steps in the foregoing method embodiments can be implemented by a program instructing relevant hardware. The aforementioned program can be stored in a computer readable storage medium. When the program is executed, the steps including the foregoing method embodiments are executed; and the foregoing storage medium includes: ROM, RAM, magnetic disk, or optical disk and other media that can store program codes.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: It is still possible to modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the application range.

Claims

A multi-beam tracking method, characterized in that it comprises:

Acquire a beam set maintained for the user equipment UE, the beam set includes a first subset and a second subset, the first subset includes the current serving beam of the UE, and the second subset includes M spares Beam selection, the M candidate beams are the first M beams that are sorted from longest to shortest according to the distance from the current serving beam to the K beams reported by the UE, and M and K are natural numbers, and M<K ；

Select a beam from the beam set of the UE, and transmit information on the selected beam.
The method according to claim 1, wherein the selecting a beam from the beam set of the UE and transmitting information on the selected beam comprises:

When the communication of the current serving beam is interrupted, a beam is selected from the second subset as a new serving beam, and beam switching signaling is sent to the UE, where the beam switching signaling includes the new serving beam Identification information;

And the UE transmits information based on the new service beam.
The method according to claim 1, wherein the selecting a beam from the beam set of the UE and transmitting information on the selected beam comprises:

Select N beams from the second subset, and transmit the same information on the current serving beam and the N beams, where N is a natural number, and N≦M.
The method according to claim 1, wherein the selecting a beam from the beam set of the UE and transmitting information on the selected beam comprises:

Select N beams from the second subset, and transmit different information on the current serving beam and the N beams, where N is a natural number, and N≦M.
The method according to any one of claims 1 to 4, wherein before the obtaining a beam set maintained for the UE, the method further comprises:

When the UE is in the access state, sending measurement report indication information to the UE, where the measurement report indication information includes identification information of multiple beams;

Receive the identification information of the K beams and the reference signal received power RSRP reported by the UE, where the K beams are the first K beams after the multiple beams are sorted from high to low according to the RSRP.
The method according to claim 5, wherein the current serving beam is the beam with the highest RSRP among the K beams.
The method according to claim 5 or 6, wherein the measurement report indication information is cell-level measurement report indication information, and the multiple beams are multiple beams in a beam codebook.
The method according to claim 5 or 6, wherein the measurement report indication information is user-level measurement report indication information, and the multiple beams are multiple beams in the beam set.
The method according to any one of claims 1-8, wherein the beam set further includes a third subset, and the third subset includes a plurality of tracking beams, and the tracking beams and the current The distance of the serving beam is less than the set value.
A multi-beam tracking device is characterized by comprising:

The acquiring module is configured to acquire a beam set maintained for a user equipment UE, the beam set includes a first subset and a second subset, the first subset includes the current serving beam of the UE, and the second subset The set includes M candidate beams, and the M candidate beams are the first M beams sorted from longest to shortest according to the distance from the current serving beam to the K beams reported by the UE, and M and K are natural numbers , And M<K;

The transmission module is configured to select a beam from the beam set of the UE, and transmit information on the selected beam.
The apparatus according to claim 10, wherein the transmission module is specifically configured to select a beam from the second subset as a new service beam when the communication of the current service beam is interrupted, and send it to all The UE sends beam switching signaling, where the beam switching signaling includes identification information of the new serving beam; and the UE transmits information based on the new serving beam.
The apparatus according to claim 10, wherein the transmission module is specifically configured to select N beams from the second subset, and transmit the same information on the current serving beam and the N beams , N is a natural number, N≤M.
The apparatus according to claim 10, wherein the transmission module is specifically configured to select N beams from the second subset, and transmit different information on the current serving beam and the N beams , N is a natural number, N≤M.
The apparatus according to any one of claims 10-13, wherein the transmission module is further configured to send measurement report indication information to the UE when the UE is in the access state, and the measurement The report indication information includes the identification information of multiple beams; the identification information of the K beams and the reference signal received power RSRP reported by the UE are received, and the K beams are the multiple beams sorted according to RSRP from high to low. The first K beams.
The apparatus according to claim 14, wherein the current serving beam is the beam with the highest RSRP among the K beams.
The apparatus according to claim 14 or 15, wherein the measurement report indication information is cell-level measurement report indication information, and the multiple beams are multiple beams in a beam codebook.
The apparatus according to claim 14 or 15, wherein the measurement report indication information is user-level measurement report indication information, and the multiple beams are multiple beams in the beam set.
The apparatus according to any one of claims 10-17, wherein the beam set further comprises a third subset, and the third subset comprises a plurality of tracking beams, and the tracking beams and the current The distance of the serving beam is less than the set value.
A communication device, characterized by comprising:

One or more processors;

Memory, used to store one or more programs;

When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1-9.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores instructions, and when the instructions are run on a computer, they are used to execute the method according to any one of claims 1-9.
A computer program, characterized in that, when the computer program is executed by a computer, it is used to execute the method according to any one of claims 1-9.