WO2018098969A1

WO2018098969A1 - Beam management method, device and system

Info

Publication number: WO2018098969A1
Application number: PCT/CN2017/080664
Authority: WO
Inventors: 徐凯; 庄宏成
Original assignee: 华为技术有限公司
Priority date: 2016-11-30
Filing date: 2017-04-14
Publication date: 2018-06-07
Also published as: CN109478922B; CN109478922A

Abstract

The present invention relates to the field of communications. Disclosed in an embodiment of the present invention are a beam management method, device and system capable of reducing a duration for which a terminal performs beam coordination with a TRP. A specific solution comprises: receiving, by a terminal, a size N of a measurement beam set configured by a base station, N beam indexes, a size K of a candidate beam set and a size L of an active beam set; determining X beams according to the size N of the measurement beam set, the N beam indexes, the size K of the candidate beam set and the size L of the active beam set, the X beams constituting the active beam set; and transmitting X beam indexes to the base station, the X beam indexes being beam indexes of the X beams contained in the active beam set. The embodiment of the present invention reduces a duration for which a terminal performs beam coordination with a TRP.

Description

Beam management method, device and system

The present application claims priority to Chinese Patent Application No. 201611089697.X, entitled "Synthesis Method and Apparatus for a Beam", filed on November 30, 2016, the entire contents of which are incorporated by reference. In this application.

Technical field

The embodiments of the present application relate to the field of communications, and in particular, to a beam management method, apparatus, and system.

Background technique

According to the latest 5G mobile communication system definition, the 5G mobile communication system includes a Long Term Evolution (LTE) evolution system and a New Radio (NR) system. The NR system defines the standard for wireless transmission between a terminal and a Transmit and Receive Port (TRP), including the transmission of signals that need to operate in high-frequency bands, such as 6 GHz or more, even up to 40 GHz and 100 GHz. The NR system also defines the concept of a cell, that is, a cell can contain multiple TRPs, and each TRP can communicate correspondingly through a specified interface to achieve mutual cooperation. As shown in FIG. 1 , the coverage of an evolved base station includes multiple cells, and each cell includes multiple TRPs under the coverage. However, since the wavelength of the high-frequency signal itself is short, the attenuation is relatively fast during the transmission process, the path loss is large, and the penetration of the high-frequency signal to the object is poor, and it is easily blocked by the obstacle during the transmission process. Therefore, the wireless environment under the NR system is poor, and it is easy to have a large impact on the link stability of the NR system. In order to overcome the above shortcomings, the terminal and the TRP need not only pass the high-frequency beamforming technology to resist the influence of the path loss of the high-frequency signal, improve the coverage characteristics of the link, and the terminal needs to perform beam coordination with the TRP. High-frequency connection with multiple TRPs at the same time to achieve fast communication communication link for reliable communication.

In the prior art, the terminal cooperates with the TRP beam to perform multi-time scanning in the time domain, and needs corresponding beam measurement and feedback to lock the target beam, and mainly uses a single beam or multi-beam real-time scanning strategy to lock the beam. Therefore, it takes a long time for the terminal to perform beam coordination before communicating with the TRP, and a corresponding beam cooperation process is required before establishing the link between the terminal and the TRP. Therefore, the length of time for the terminal to cooperate with the TRP is longer, which results in a slower link establishment process between the terminal and the TRP, which reduces the user experience.

Summary of the invention

The embodiment of the present invention provides a beam management method, device, and system, which can effectively shorten the duration of beam coordination between a terminal and a TRP, so that the terminal can quickly access the network and further improve the user experience.

To solve the above technical problem, the embodiment of the present application provides the following technical solutions:

A first aspect of the present application provides a beam management method, including: first, a terminal receives a first message sent by a base station, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K. Then, the terminal determines M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K, and the M beams constitute a candidate beam set, where M is greater than or equal to 1 and less than or equal to K The terminal further sends a second message to the base station, the second message includes M beam indexes, the M beam indexes are beam indexes of the M beams included in the candidate beam set, and the terminal receives the third message sent by the base station, the third message The message includes an active beam set size L, and the terminal determines X beams according to the M beam indexes and the active beam set size L, the X beams constitute a set of active beams, and X is an integer greater than or equal to 1 and less than or equal to L; the terminal sends the first to the base station The fourth message, the fourth message includes X beam indexes, and the X beam indexes are beam indexes of X beams included in the active beam set. The measurement beam set includes a beam corresponding to the N beam indexes, N is an integer greater than or equal to 1, and the candidate beam set size K is an integer greater than or equal to 1 and smaller than the measurement beam set size N; the active beam set size L is greater than or equal to 1 And less than an integer of the candidate beam set size K.

In the beam management method provided by the embodiment of the present application, the terminal determines X beams according to the measurement beam set size N, N beam indexes, candidate beam set size K, and active beam set size L configured by the base station to the terminal, and the X beams form an activity. After the beam is set, the terminal then notifies the base station of the X beams that are filtered, that is, the message including the X beam indexes can be sent to the base station. When the base station is an eNB, the updated active beam set is forwarded to the TRP that needs to communicate with the terminal. Therefore, before the terminal communicates with the TRP, the terminal notifies the base station of the beam that has been subjected to the two screenings from the beam configured by the base station, and the terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured. Selecting a beam that can be used in the beam effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network under high frequency and unstable link conditions, and improve the efficiency of beam management. Further improve the user experience.

With reference to the first aspect, in a possible implementation, the determining, by the terminal, the M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K includes: the terminal measurement measurement beam set includes a beam corresponding reference signal Receive power; the terminal determines the M beams included in the candidate beam set according to the reference signal received power corresponding to the measured beam; or the terminal determines the M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K. The terminal measures the received power of the reference signal corresponding to the beam included in the measurement beam set; the terminal receives the reference signal received power corresponding to the measured beam in descending order, and selects the first M beams from the N beams according to the largest to smallest. The first message further includes M, M for indicating the number of beams selected from the beams corresponding to the N beam indexes.

Before the terminal communicates with the TRP, the terminal notifies the base station of the beam that is filtered from the beam configured by the base station to the base station. The terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured from the configured Selecting a beam that can be used in the beam, effectively reducing the length of time for the terminal to cooperate with the TRP, and enabling the terminal to quickly access the network, further improving the user experience. The beam management method provided by the embodiment of the present application, the terminal passes the measurement beam The corresponding reference signal receives power, and determines M beams included in the candidate beam set according to the reference signal received power corresponding to the beam.

With reference to the foregoing possible implementation manners, in another possible implementation manner, the determining, by the terminal, the X beams according to the M beam indexes and the active beam set size L includes: receiving, by the terminal, the reference signal received power corresponding to the beam included in the candidate beam set; Determining, by the terminal, the X beams included in the active beam set according to the reference signal received by the measured beam; or determining, by the terminal, the X beams according to the M beam index and the active beam set size L, including: the beam included in the terminal measurement candidate beam set Corresponding reference signal receiving power; the reference signal received by the terminal corresponding to the measured beam is sorted from large to small, and the first X beams are filtered from the M beams according to the largest to the smallest, and the third message further includes X and X. Indicates the corresponding from the M beam index The number of beams screened out in the beam.

Before the terminal communicates with the TRP, the terminal notifies the base station of the beam that is filtered from the beam configured by the base station to the base station. The terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured from the configured Selecting a beam that can be used in the beam, effectively reducing the length of time for the terminal to cooperate with the TRP, and enabling the terminal to quickly access the network, further improving the user experience. The beam management method provided by the embodiment of the present application, the terminal passes the measurement beam The corresponding reference signal receives power, and determines X beams included in the active beam set according to the reference signal received power corresponding to the beam.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, after the terminal determines X beams according to the M beam indexes and the active beam set size L, after the X beams form the active beam set, the method further The method includes: the terminal measures a reference signal received power corresponding to a beam included in the candidate beam set; the terminal updates the active beam set according to the reference signal received power corresponding to the measured beam; the terminal sends a fifth message to the base station, where the fifth message includes the updated activity. The beam index of the beam included in the beam set. When the base station is an evolved base station (eNB), the terminal sends a fifth message to the eNB, and then the eNB forwards the updated active beam set to the TRP that needs to communicate with the terminal, or the terminal needs to communicate directly with the terminal. The TRP sends the updated active beam set; when the base station is a TRP, the terminal sends a fifth message to the TRP. Thus, the terminal further enables the terminal to communicate with the base station using a beam having a better received power of the reference signal by updating the filtered beam.

In order to effectively shorten the length of the beam and the TRP, the terminal can quickly access the network, and further improve the user experience. In combination with the first aspect and the foregoing possible implementation manner, in another possible implementation manner, The method further includes: receiving, by the terminal, a sixth message sent by the base station, where the sixth message includes a period duration and a subframe offset, or the sixth message includes a start subframe and an end subframe; and the receiving, by the terminal, the first message sent by the base station includes: The period duration and the subframe offset receive the first message sent by the base station; or the terminal receives the first message sent by the base station according to the start subframe and the end subframe. Thereby, the terminal receives the message configured by the base station periodically, or receives the message configured by the base station aperiodically.

With reference to the first aspect and the foregoing possible implementation manner, in another possible implementation manner, the terminal passes a Radio Resource Control (RRC) message or a Media Access Control-Control Element (MAC). - CE) message exchanges with the base station, the message is a first message, a second message, a third message, a fourth message, a fifth message or a sixth message, the first message includes one or more RRC messages, or, A message includes one or more MAC-CE messages. When the base station is an eNB, the terminal performs message transmission with the eNB according to the RRC message; when the base station is a TRP, the terminal performs message transmission according to the MAC-CE message and the TRP. Therefore, the beam management method in the embodiment of the present application provides a specific implementation manner of the message exchange between the terminal and the base station, which can effectively shorten the length of the beam collaboration between the terminal and the TRP, so that the terminal can quickly access the network. Further improve the user experience.

In order to effectively shorten the length of the beam and the TRP, the terminal can quickly access the network, and further improve the user experience. In combination with the first aspect and the foregoing possible implementation manner, in another possible implementation manner, The beam included in the measurement beam set is an uplink beam, and the beam included in the candidate beam set is an uplink beam, and the beam included in the active beam set is an uplink beam; or the beam included in the measurement beam set is a downlink beam, and the candidate beam set includes The beam is a downlink beam, and the active beam set includes The beam included in the measurement beam set is an uplink and downlink beam pair, and the beam included in the candidate beam set is an uplink and downlink beam pair, and the beam included in the active beam set is an uplink and downlink beam pair.

A second aspect of the present application provides a beam management method, including: a base station sending a first message to a terminal, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, and the measurement beam The set includes a beam corresponding to the N beam indexes, N is an integer greater than or equal to 1, and the candidate beam set size K is an integer greater than or equal to 1 and smaller than the measurement beam set size N; the base station receives the second message sent by the terminal, and the second message includes M beam indexes, M beam indexes are beam indexes of M beams included in the candidate beam set, M is an integer greater than or equal to 1 and less than or equal to K; the base station sends a third message to the terminal, and the third message includes the active beam set size L, the active beam set size L is an integer greater than or equal to 1 and smaller than the candidate beam set size K; the base station receives the fourth message sent by the terminal, the fourth message includes X beam indexes, and the X beam indexes are X included in the active beam set. Beam index of the beams.

In the beam management method provided by the embodiment of the present application, the base station configures the measurement beam set size N, the N beam indexes, the candidate beam set size K, and the active beam set size L to the terminal, so that the terminal according to the measurement beam set size N, N beam indexes The candidate beam set size K and the active beam set size L determine X beams, the X beams constitute an active beam set, and the base station receives the message including the X beam indexes sent by the terminal, and the X beam indexes are the active beam sets. Beam index corresponding to X beams. When the base station is an eNB, the updated active beam set is forwarded to the TRP that needs to communicate with the terminal. Therefore, before the terminal communicates with the TRP, the terminal notifies the base station of the beam that has been subjected to the two screenings from the beam configured by the base station, and the terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured. The available beams are selected in the beam, which effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, further improving the user experience.

With reference to the second aspect, in a possible implementation manner, after the base station receives the fourth message sent by the terminal, the method further includes: the base station receiving the fifth message sent by the terminal, where the fifth message includes the updated active beam set included Beam index of the beam. Thus, by updating the filtered beam, the terminal is further enabled to communicate with the base station using a beam having a better received power of the reference signal.

In order to effectively shorten the length of the beam and the TRP, the terminal can quickly access the network, and further improve the user experience. In combination with the second aspect and the foregoing possible implementation manner, in another possible implementation manner, The method further includes: the base station sending a sixth message to the terminal, where the sixth message includes a period duration and a subframe offset, or the sixth message includes a start subframe and an end subframe. Thus, the terminal can receive the message configured by the base station periodically, or receive the message configured by the base station aperiodically.

Before the terminal communicates with the TRP, the terminal notifies the base station of the beam that is filtered from the beam configured by the base station to the base station. The terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured from the configured Selecting a beam that can be used in the beam effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, further improving the user experience. With reference to the second aspect and the foregoing possible implementation manner, in another possible implementation manner, when the base station is a TRP, before the base station sends the first message to the terminal, the method further includes: the base station acquiring the measurement beam set by using the first interface. Size N, N beam indices, candidate beam set size K, and active beam set size L.

Before the terminal communicates with the TRP, the terminal notifies the base station of the beam that is filtered by the two times in the beam configured by the base station, and the terminal is the same as the beam configured by the TRP. The terminal selects a available beam from the configured beam, which effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, further improving the user experience. With reference to the second aspect and the foregoing possible implementation manner, in another possible implementation manner, when the base station is an eNB, after the base station receives the fourth message sent by the terminal, the method further includes: the base station forwarding the seventh through the first interface The message, the seventh message includes a beam index of a beam included in the active beam set.

Before the terminal communicates with the TRP, the terminal notifies the base station of the beam that is filtered from the beam configured by the base station to the base station. The terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured from the configured Selecting a beam that can be used in the beam effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, further improving the user experience. With reference to the second aspect and the foregoing possible implementation manner, in another possible implementation manner, when the base station is an eNB, after the base station receives the fifth message sent by the terminal, the method further includes: the base station forwarding the eighth through the first interface The message, the eighth message includes a beam index of the beam included in the updated active beam set.

A third aspect of the present application provides a terminal, including: a receiving unit, configured to receive a first message sent by a base station, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, The measurement beam set includes a beam corresponding to the N beam indexes, N is an integer greater than or equal to 1, the candidate beam set size K is an integer greater than or equal to 1 and smaller than the measurement beam set size N, and the processing unit is configured to use the measurement beam set size N The N beam indexes and the candidate beam set size K determine M beams, the M beams constitute a candidate beam set, M is an integer greater than or equal to 1 and less than or equal to K; the transmitting unit is configured to send a second message to the base station, and second The message includes M beam indexes, the M beam indexes are the beam indexes of the M beams included in the candidate beam set, and the receiving unit is further configured to receive the third message sent by the base station, where the third message includes the active beam set size L, the active beam The set size L is an integer greater than or equal to 1 and less than the candidate beam set size K; the processing unit is further configured to index and activity according to the M beams The beam set size L determines X beams, X beams constitute a set of active beams, X is an integer greater than or equal to 1 and less than or equal to L; the transmitting unit is further configured to send a fourth message to the base station, where the fourth message includes X beam indexes The X beam indices are the beam indices of the X beams included in the active beam set.

A fourth aspect of the present application provides a base station, including: a sending unit, configured to send a first message to a terminal, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, and the measurement The beam set includes a beam corresponding to the N beam indexes, N is an integer greater than or equal to 1, the candidate beam set size K is an integer greater than or equal to 1 and smaller than the measurement beam set size N, and the receiving unit is configured to receive the second message sent by the terminal. The second message includes M beam indexes, the M beam indexes are the beam indexes of the M beams included in the candidate beam set, M is an integer greater than or equal to 1 and less than or equal to K, and the sending unit is further configured to send the third to the terminal. The third message includes an active beam set size L, and the active beam set size L is an integer greater than or equal to 1 and smaller than the candidate beam set size K. The receiving unit is further configured to receive a fourth message sent by the terminal, where the fourth message includes the X message. Beam index, X beam index is the beam index of X beams included in the active beam set.

It should be noted that the foregoing third and fourth functional modules may be implemented by hardware, or may be implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above. For example, a transceiver for performing functions of a receiving unit and a transmitting unit, a processor for performing functions of the processing unit, a memory, and a program instruction for the processor to process the beam management method of the embodiment of the present application. The processor, transceiver, and memory are connected by a bus and communicate with each other. Specifically, the function of the behavior of the terminal in the beam management method provided by the first aspect, and the function of the behavior of the terminal in the beam management method provided by the second aspect may be referred to.

In a fifth aspect, an embodiment of the present application provides a terminal, including: a processor, a memory, a bus, and a communication interface; the memory is configured to store a computer execution instruction, and the processor is connected to the memory through the bus, when the terminal is running The processor executes the computer-executable instructions stored by the memory to cause the terminal to perform the method of any of the above aspects.

In a sixth aspect, the embodiment of the present application provides a computer readable storage medium, configured to store computer software instructions used by the first terminal, and when executed on a computer, enable the computer to perform the method of any of the foregoing aspects. .

In a seventh aspect, an embodiment of the present application provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform the method of any of the above aspects.

In addition, the technical effects brought by the design manners of any one of the third aspect to the seventh aspect can be referred to the technical effects brought by the different design modes in the first aspect to the second aspect, and details are not described herein again.

An eighth aspect of the present application provides a beam management method, including: first, a terminal receives a first message sent by a base station, where the first message includes a measurement beam set size N, N beam indexes, and an active beam set size L. Then, the terminal determines X beams according to the measurement beam set size N, the N beam indexes, and the active beam set size L, and the X beams constitute an active beam set, where X is an integer greater than or equal to 1 and less than or equal to L, and the terminal sends the sequence to the base station. The second message includes a X beam index, and the X beam indexes are beam indexes of X beams included in the active beam set. The measurement beam set includes a beam corresponding to N beam indexes, N is an integer greater than or equal to 1, and the active beam set size L is an integer greater than or equal to 1 and smaller than the measurement beam set size N.

In the beam management method provided by the embodiment of the present application, first, the base station configures a measurement beam set size N, N beam indexes, and an active beam set size L to the terminal, and then, after receiving the first message sent by the base station, the terminal according to the measurement beam set size N, N beam indices and active beam set size L determine X beams, the X beams constitute a set of active beams, and the terminal sends a second message to the base station, the second message includes X beam indexes, and X beam indexes are active The beam index of the X beams included in the beam set. When the base station is an eNB, the updated active beam set is forwarded to the TRP that needs to communicate with the terminal. Therefore, before the terminal communicates with the TRP, the terminal notifies the base station of the beam that has been subjected to the two screenings from the beam configured by the base station, and the terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured. The available beams are selected in the beam, which effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, further improving the user experience.

A ninth aspect of the present application provides a beam management method, including: a base station sending a first message to a terminal, where the first message includes a measurement beam set size N, N beam indexes, and an active beam set size L, and the measurement beam The set includes N beams corresponding to the beam index, N is an integer greater than or equal to 1; the base station receives the second message sent by the terminal, the second message includes X beam indexes, and the X beam indexes are X beams included in the active beam set. Beam index.

In the beam management method provided by the embodiment of the present application, first, the base station configures a measurement beam set size N, N beam indexes, and an active beam set size L to the terminal, so that the terminal receives the first message sent by the base station, according to the measurement. The beam set size N, the N beam index, and the active beam set size L determine X beams, the X beams constitute a set of active beams, and the base station receives a second message sent by the terminal, where the second message includes X beam indexes, X The beam index is the beam index of the X beams included in the active beam set. When the base station is an eNB, the updated active beam set is forwarded to the TRP that needs to communicate with the terminal. Therefore, before the terminal communicates with the TRP, the terminal notifies the base station of the beam that has been subjected to the two screenings from the beam configured by the base station, and the terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured. The available beams are selected in the beam, which effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, further improving the user experience.

The base station described above may be an eNB or a TRP. In the embodiment of the present application, the names of the terminal and the base station are not limited to the device itself. In actual implementation, the devices may appear under other names. As long as the functions of the respective devices are similar to the embodiments of the present application, they are within the scope of the claims and their equivalents.

These and other aspects of the embodiments of the present application will be more readily understood in the following description of the embodiments.

DRAWINGS

FIG. 1 is a simplified schematic diagram of a system architecture that can be applied to an embodiment of the present application provided by the prior art;

2 is a schematic structural diagram of a computer device according to an embodiment of the present application;

FIG. 3 is a flowchart of a beam management method according to an embodiment of the present application;

FIG. 4 is a flowchart of a method for determining a beam according to an embodiment of the present disclosure;

FIG. 5 is a flowchart of a method for determining a beam according to an embodiment of the present disclosure

FIG. 6 is a flowchart of a method for determining a beam according to an embodiment of the present application;

FIG. 7 is a flowchart of a method for determining a beam according to an embodiment of the present application;

FIG. 8 is a flowchart of a beam management method according to an embodiment of the present application;

FIG. 9 is a flowchart of a beam management method according to an embodiment of the present application;

FIG. 10 is a flowchart of a beam management method according to an embodiment of the present application;

FIG. 11 is a flowchart of a beam management method according to an embodiment of the present application;

FIG. 12 is a flowchart of a beam management method according to an embodiment of the present application;

FIG. 13 is a schematic structural diagram of a terminal according to an embodiment of the present application;

FIG. 14 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.

detailed description

In order to solve the problem of how to shorten the length of the beam for the terminal to enable the terminal to access the network, the beam management method provided by the embodiment of the present application firstly sends a first message to the terminal, where the first message includes the size of the measurement beam set. N, N beam indexes and candidate beam set sizes K. Then, after receiving the first message sent by the base station, the terminal determines M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K, and the M beams The beam constitutes a set of candidate beams, and the terminal sends a second message to the base station, where the second message includes M beam indexes, the M beam indexes are beam indexes of M beams included in the candidate beam set, and the base station sends a third message to the terminal, The third message includes an active beam set size L. After the terminal receives the third message sent by the base station, the terminal determines X beams according to the M beam index and the active beam set size L, and the X beams form an active beam set, and the terminal re-routes to the base station. Sending a fourth message, where the fourth message includes X beam indexes, and X beam indexes are active beam sets The beam index including the X beams. When the base station is At the time of the eNB, the updated active beam set is forwarded to the TRP that needs to communicate with the terminal. Therefore, before the terminal communicates with the TRP, the terminal notifies the base station of the beam that has been subjected to the two screenings from the beam configured by the base station, and the terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured. The available beams are selected in the beam, which effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, further improving the user experience.

Embodiments of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

1 is a simplified schematic diagram of a system architecture to which embodiments of the present application may be applied. As shown in FIG. 1, the system architecture may include: a terminal 11, a TRP 12, and an eNB 13.

Wherein, a plurality of cells may be included in the range covered by the base station 13, such as cell 0, cell 1 and cell 2 in FIG. The coverage of each cell includes multiple TRPs, and the base station communicates with the TRP through the first interface. The terminal can communicate with multiple TRPs at the same time. The beam management method in the embodiment of the present application is described in detail in the following embodiments of the present application.

In a specific implementation, the terminal 11 can be a desktop type, a laptop, a tablet computer, a handheld computer, a mobile phone, a notebook computer, an Ultra-mobile Personal Computer (UMPC), a netbook, and a cellular phone, a personal number. Personal Digital Assistant (PDA), consumer electronics, wearables, and more.

FIG. 2 is a schematic structural diagram of a computer device according to an embodiment of the present disclosure. As shown in FIG. 2, the computer device may include at least one processor 21, a memory 22, a communication interface 23, and a communication bus 24.

The specific components of the computer device will be specifically described below with reference to FIG. 2:

The processor 21 is a control center of the computer device, and may be a processor or a collective name of a plurality of processing elements. For example, the processor 21 is a central processing unit (CPU), may be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application. For example, one or more microprocessors (Digital Signal Processors, DSPs), or one or more Field Programmable Gate Arrays (FPGAs).

Among them, the processor 21 can perform various functions of the base station or the terminal by running or executing a software program stored in the memory 22 and calling data stored in the memory 22.

In a particular implementation, as an embodiment, processor 21 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG.

In a particular implementation, as an embodiment, a computer device can include multiple processors, such as processor 21 and processor 25 shown in FIG. Each of these processors can be a single core processor (CPU) or a multi-core processor (multi-CPU). A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.

The memory 22 can be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type that can store information and instructions. The dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), disk storage media Or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of an instruction or data structure and that can be accessed by a computer, but is not limited thereto. Memory 22 may be present independently and coupled to processor 21 via communication bus 24. The memory 22 can also be integrated with the processor 21.

The memory 22 is used to store a software program that executes the solution of the present application, and is controlled by the processor 21 for execution.

The communication interface 23 uses a device such as any transceiver for communicating with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc. . The communication interface 23 may include a receiving unit that implements a receiving function, and a transmitting unit that implements a transmitting function.

The communication bus 24 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 2, but it does not mean that there is only one bus or one type of bus.

The device structure illustrated in FIG. 2 does not constitute a limitation to a computer device, and may include more or fewer components than those illustrated, or some components may be combined, or different component arrangements.

In a specific implementation, as an embodiment, the computer device shown in FIG. 2 may be a terminal.

The communication interface 23 is configured to receive the first message and the third message sent by the base station.

The communication interface 23 is further configured to send the second message and the fourth message to the base station.

The processor 21 is configured to determine M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K.

The processor 21 is further configured to determine X beams according to the M beam indexes and the active beam set size L.

In a specific implementation, as an embodiment, the computer device shown in FIG. 2 may be a base station.

The communication interface 23 is configured to send the first message and the third message to the terminal.

The communication interface 23 is further configured to receive the second message and the fourth message sent by the terminal.

The beam management method provided by the embodiment of the present application is specifically described below with reference to the accompanying drawings.

FIG. 3 is a flowchart of a beam management method according to an embodiment of the present disclosure. The base station in the embodiment of the present application is an eNB. Specifically, as shown in FIG. 3, the method may include:

301. The eNB sends a first message to the terminal.

The eNB configures the measurement beam set size N, the N beam indexes, and the candidate beam set size K by transmitting the first message to the terminal. The measurement beam set size N is used to indicate the number of beams included in the measurement beam set, that is, how many beams can be included in the measurement beam set configured by the eNB for the terminal. The N beam indexes are the beam indexes corresponding to the N beams included in the measurement beam set, that is, the beam indexes corresponding to the beams constituting the measurement beam set. The candidate beam set size K is used to indicate the number of beams included in the candidate beam set, that is, how many beams can be included in the candidate beam set configured by the eNB for the terminal. N is an integer greater than or equal to 1, and K is an integer greater than or equal to 1 and less than N.

302. The terminal receives the first message sent by the eNB.

The first message includes a measurement beam set size N, N beam indexes, and candidates configured by the eNB for the terminal. Select the beam set size K. The measurement beam set size N is used to indicate the number of beams included in the measurement beam set, that is, how many beams can be included in the measurement beam set configured by the eNB for the terminal. The N beam indexes are the beam indexes corresponding to the N beams included in the measurement beam set, that is, the beam indexes corresponding to the beams constituting the measurement beam set. The candidate beam set size K is used to indicate the number of beams included in the candidate beam set, that is, how many beams can be included in the candidate beam set configured by the eNB for the terminal. N is an integer greater than or equal to 1, and K is an integer greater than or equal to 1 and less than N.

It should be noted that the first message may be one or more RRC messages. Alternatively, the first message may be one or more MAC-CE messages. That is, the measurement beam set size N, the N beam indexes, and the candidate beam set size K may be respectively transmitted by three RRC messages or MAC-CE messages, and the first message carries three RRC messages or MAC-CE messages simultaneously.

303. The terminal determines, according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K, M beams.

The M beams constitute a set of candidate beams, and M is an integer greater than or equal to 1 and less than or equal to K. That is, the number of beams actually filtered from the measurement beam set may be the same as the size K of the candidate beam set configured by the base station, or may be less than The size K of the candidate beam set configured by the base station.

FIG. 4 is a flowchart of a method for determining a beam according to an embodiment of the present disclosure. Specifically, as shown in FIG. 4, a terminal determines, according to a measurement beam set size N, N beam indexes, and a candidate beam set size K, M beams include :

303a. The terminal measures a reference signal received power corresponding to a beam included in the measurement beam set.

The terminal measures the reference signal received power of each of the beams corresponding to the N beam indexes configured by the eNB to the terminal.

303b. The terminal determines, according to the reference signal received power of the measured beam, the M beams included in the candidate beam set.

For example, the terminal may determine whether the reference signal received power of the i-th beam is greater than the candidate beam set measurement threshold. When the reference signal received power of the i-th beam is greater than the candidate beam set measurement threshold, the i-th beam is used as the candidate beam. The aggregated beam, when the reference signal received by the i-th beam is less than or equal to the candidate beam set measurement threshold, the i-th beam continues to be the beam of the measurement beam set, and the i-th beam is any one of the measurement beam sets. At this time, the first message may further include a candidate beam set measurement threshold. The candidate beam set measurement threshold is also the measurement threshold of the reference signal received power.

FIG. 5 is a flowchart of a method for determining a beam according to an embodiment of the present disclosure. Specifically, as shown in FIG. 5, a terminal determines, according to a measurement beam set size N, N beam indexes, and a candidate beam set size K, M beams are included. :

303c. The terminal measures a reference signal received power corresponding to a beam included in the measurement beam set.

303d. The terminal receives the reference signal received power corresponding to the measured beam according to the order from the largest to the smallest, and selects the first M beams from the N beams according to the largest to the smallest.

At this time, the M may be configured by the eNB to the terminal by using the first message, and the first message further includes M, where M is used to indicate the number of beams that are selected from the beams corresponding to the N beam indexes.

304. The terminal sends a second message to the eNB.

The second message includes M beam indices. M beam indices are M beams included in the candidate beam set Beam index.

305. The eNB receives the second message sent by the terminal.

The second message includes M beam indices. The M beam indices are beam indices of M beams included in the candidate beam set.

306. The eNB sends a third message to the terminal.

The third message includes an active beam set size L, and the active beam set size L is an integer greater than or equal to 1 and smaller than the candidate beam set size K. The active beam set size L is used to indicate the number of beams included in the active beam set, that is, how many beams can be included in the active beam set configured by the eNB for the terminal.

307. The terminal receives a third message sent by the eNB.

308. The terminal determines X beams according to the M beam indexes and the active beam set size L.

The X beams form a set of active beams, and X is an integer greater than or equal to 1 and less than or equal to L. That is, the number of beams actually filtered from the candidate beam set may be the same as or smaller than the size L of the active beam set configured by the base station. The size L of the active beam set configured by the base station. At this time, the candidate beam set is determined by the terminal described in step 303 according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K to determine M beams.

FIG. 6 is a flowchart of a method for determining a beam according to an embodiment of the present disclosure. Specifically, as shown in FIG. 6 , determining, by the terminal, the X beams according to the M beam index and the active beam set size L includes:

308a. The terminal measures a reference signal received power corresponding to a beam included in the candidate beam set.

The terminal measures the reference signal received power of each of the M beams corresponding to the M beam indexes configured by the eNB.

308b. The terminal determines, according to the reference signal received by the measured beam, the X beams included in the active beam set.

For example, the terminal may determine whether the reference signal received power of the i-th beam is greater than the active beam set measurement threshold. When the reference signal received power of the i-th beam is greater than the active beam set measurement threshold, the i-th beam is used as the active beam. The aggregated beam, when the reference signal received power of the i-th beam is less than or equal to the active beam set measurement threshold, the i-th beam continues as the beam of the candidate beam set, and the i-th beam is any one of the candidate beam sets. At this time, the third message may further include an active beam set measurement threshold. The active beam set measurement threshold is also the measurement threshold of the reference signal received power.

FIG. 7 is a flowchart of a method for determining a beam according to an embodiment of the present disclosure. Specifically, as shown in FIG. 7 , determining, by the terminal, the X beams according to the M beam index and the active beam set size L includes:

308c. The terminal measures a reference signal received power corresponding to a beam included in the candidate beam set.

308d. The terminal receives the reference signal received power corresponding to the measured beam according to the order from the largest to the smallest, and selects the first X beams from the M beams according to the largest to the smallest.

At this time, the X may be configured by the eNB to the terminal by using the third message, and the third message further includes X, where X is used to indicate the number of beams that are selected from the beams corresponding to the M beam indexes.

309. The terminal sends a fourth message to the eNB.

The fourth message includes X beam indices, and the X beam indexes are beam indices of X beams included in the active beam set.

310. The eNB receives a fourth message sent by the terminal.

311. The eNB sends a fifth message to the sending and receiving station.

The fifth message includes X beam indexes, that is, the eNB sends a set of active beams that are successfully configured by the terminal and the eNB to the transmitting and receiving station that establishes a connection with the terminal.

In the beam management method provided by the embodiment of the present application, the eNB first sends a first message to the terminal, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, and then the terminal receives the eNB. After a message, the M beams are determined according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K. The M beams form a candidate beam set, and the terminal sends a second message to the eNB, where the second message includes M The beam index, the M beam index is the beam index of the M beams included in the candidate beam set; the eNB sends a third message to the terminal, where the third message includes the active beam set size L, and the terminal receives the third message sent by the eNB, The terminal determines X beams according to the M beam index and the active beam set size L, the X beams form a live beam set, and the terminal sends a fourth message to the eNB, where the fourth message includes X beam indexes, and the X beam indexes are active. The beam index of the X beams included in the beam set. Therefore, before the terminal communicates with the TRP, the terminal notifies the eNB of the beam that has been filtered by the eNB, and the eNB forwards the beam to the TRP. The terminal is the same as the beam configured by the TRP. At the same time, the terminal selects a usable beam from the configured beam, which effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, further improving the user experience.

The method steps shown in FIG. 3 above may be specifically implemented by the computer device shown in FIG. 2. By way of example, steps 303 and 308 can be implemented by processor 21. Step 301 and step 302 and the like can be implemented by the communication interface 23.

Further, based on FIG. 3, as shown in FIG. 8, after the terminal sends a fourth message to the eNB, that is, after step 309, the terminal may further measure the reference signal received power corresponding to the beam included in the candidate beam set, and update the active beam set. The beam includes the following detailed steps.

312. The terminal measures a reference signal received power corresponding to a beam included in the candidate beam set.

313. The terminal receives the power according to the reference signal corresponding to the measured beam, and updates the active beam set.

For example, the terminal determines whether the reference signal received power of the i-th beam is greater than the active beam set measurement threshold, and when the reference signal received power of the i-th beam is less than or equal to the active beam set measurement threshold, continues to determine the (i+1)th beam. Whether the corresponding reference signal received power is greater than the active beam set measurement threshold; when the reference signal received power corresponding to the i-th beam is greater than the active beam set measurement threshold, the terminal needs to determine whether the ith beam is correctly used.

The terminal determines whether the ith beam is being used for communication, and if the terminal is using the ith beam for communication, that is, the ith beam is definitely the beam included in the active beam set, and the ith beam is not updated, and the judgment is continued. Whether the reference signal received power corresponding to the i+1 beams is greater than the active beam set measurement threshold. If the terminal does not use the ith beam for communication, the terminal compares the reference signal received power corresponding to the ith beam with the smallest received power of the reference signal received power corresponding to the M beams in the active beam set.

When the reference signal received power corresponding to the ith beam is greater than the minimum received power of the reference signal received power corresponding to the M beams in the active beam set, the beam in the active beam set is updated, that is, the beam corresponding to the minimum received power is deleted. The i-th beam is used as the beam in the active beam set; when the reference signal received power corresponding to the i-th beam is less than or equal to the minimum received power of the reference signal received power corresponding to the M beams in the active beam set, continue to judge the i-th Whether the reference signal received power corresponding to the +1 beam is greater than the active beam set measurement threshold.

The ith beam described above is any one of the candidate beam sets.

314. The terminal sends a sixth message to the eNB.

The sixth message includes a beam index of the beam included in the updated active beam set.

315. The eNB receives a sixth message sent by the terminal.

316. The eNB sends a seventh message to the sending and receiving station.

The seventh message includes a beam index of the beam included in the updated active beam set. That is, the eNB transmits the updated active beam set to the transmitting and receiving station that establishes a connection with the terminal.

Therefore, before the terminal communicates with the eNB, the terminal notifies the eNB of the beam that has been filtered by the eNB, and the terminal is the same as the beam configured by the eNB. When the terminal performs beam cooperation with the eNB, the terminal is configured. The available beams are selected in the beam, which effectively shortens the length of time for the terminal to cooperate with the eNB, so that the terminal can quickly access the network, further improving the user experience.

The method steps shown in FIG. 8 above may be specifically implemented by the computer device shown in FIG. 2. For example, step 312 and step 313 can be implemented by processor 21. Steps 314 through 315 can be implemented by the communication interface 23.

Further, the beam management method according to the embodiment of the present application may further include the following detailed steps, as shown in FIG.

317. The eNB sends an eighth message to the terminal.

The eighth message includes a period duration and a subframe offset. Alternatively, the eighth message includes a start subframe and an end subframe.

318. The terminal receives an eighth message sent by the eNB.

The eighth message includes a period duration and a subframe offset. Alternatively, the eighth message includes a start subframe and an end subframe. Therefore, the terminal receives the first message sent by the eNB according to the period duration and the subframe offset, that is, the terminal periodically receives the first message; or the terminal receives the first message sent by the eNB according to the start subframe and the end subframe, that is, the terminal aperiodic The first message is received.

It should be noted that the base station in the embodiment of the present application is an eNB, and when the terminal performs message exchange with the eNB, the RRC message or the MAC-CE message, that is, the message used by the terminal and the eNB according to the embodiment of the present application, may be used. Is an RRC message or a MAC-CE message.

FIG. 10 is a flowchart of a beam management method according to an embodiment of the present disclosure. The base station in the embodiment of the present application is a TRP. Specifically, as shown in FIG. 10, the method may include:

401. The eNB sends, by using the first interface, a measurement beam set size N, N beam indexes, a candidate beam set size K, and an active beam set size L to the TRP.

The measurement beam set size N is used to indicate the number of beams included in the measurement beam set, that is, how many beams can be included in the measurement beam set configured by the eNB for the TRP. The N beam indexes are the beam indexes corresponding to the N beams included in the measurement beam set, that is, the beam indexes corresponding to the beams constituting the measurement beam set. The candidate beam set size K is used to indicate the number of beams included in the candidate beam set, that is, how many beams can be included in the candidate beam set configured by the eNB for the TRP. N is an integer greater than or equal to 1, and K is an integer greater than or equal to 1 and less than N.

402. The TRP receives, by using the first interface, a measurement beam set size N, an N beam index, a candidate beam set size K, and an active beam set size L sent by the eNB.

403. The TRP sends a first message to the terminal.

The TRP configures the measurement beam set size N, the N beam indexes, and the candidate beam set size K by transmitting the first message to the terminal. The measurement beam set size N is used to indicate the number of beams included in the measurement beam set, that is, how many beams can be included in the measurement beam set configured by the TRP for the terminal. The N beam indexes are the beam indexes corresponding to the N beams included in the measurement beam set, that is, the beam indexes corresponding to the beams constituting the measurement beam set. The candidate beam set size K is used to indicate the number of beams included in the candidate beam set, that is, how many beams can be included in the candidate beam set configured by the TRP for the terminal. N is an integer greater than or equal to 1, and K is an integer greater than or equal to 1 and less than N.

404. The terminal receives the first message sent by the TRP.

The first message includes a measurement beam set size N, a N beam index, and a candidate beam set size K configured by the TRP to the terminal. The measurement beam set size N is used to indicate the number of beams included in the measurement beam set, that is, how many beams can be included in the measurement beam set configured by the TRP for the terminal. The N beam indexes are the beam indexes corresponding to the N beams included in the measurement beam set, that is, the beam indexes corresponding to the beams constituting the measurement beam set. The candidate beam set size K is used to indicate the number of beams included in the candidate beam set, that is, how many beams can be included in the candidate beam set configured by the TRP for the terminal. N is an integer greater than or equal to 1, and K is an integer greater than or equal to 1 and less than N.

It should be noted that the first message may be one or more MAC-CE messages. That is, the measurement beam set size N, the N beam indexes, and the candidate beam set size K may be respectively transmitted by three MAC-CE messages, and the first message simultaneously carries three MAC-CE messages.

405. The terminal determines M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K.

The M beams constitute a candidate beam set, and M is an integer greater than or equal to 1 and less than or equal to K.

For a detailed method for determining the M beams, refer to step 303, and details are not described herein again.

406. The terminal sends a second message to the TRP.

407. The TRP receives a second message sent by the terminal.

408. The TRP sends a third message to the terminal.

The third message includes an active beam set size L, and the active beam set size L is greater than or equal to 1 and less than The integer of the candidate beam set size K. The active beam set size L is used to indicate the number of beams included in the active beam set, that is, how many beams can be included in the active beam set configured by the TRP for the terminal.

409. The terminal receives the third message sent by the TRP.

The third message includes an active beam set size L, and the active beam set size L is an integer greater than or equal to 1 and smaller than the candidate beam set size K. The active beam set size L is used to indicate the number of beams included in the active beam set, that is, how many beams can be included in the active beam set configured by the TRP for the terminal.

410. The terminal determines X beams according to the M beam indexes and the active beam set size L.

The X beams constitute a set of active beams, and X is an integer greater than or equal to 1 and less than or equal to L.

For a detailed method for determining X beams, reference may be made to step 308, and details are not described herein again.

411. The terminal sends a fourth message to the TRP.

412. The TRP receives a fourth message sent by the terminal.

In the beam management method provided by the embodiment of the present application, first, the TRP sends a first message to the terminal, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, and then the terminal receives the TRP transmission. After a message, the M beams are determined according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K. The M beams form a candidate beam set, and the terminal sends a second message to the TRP, where the second message includes M The beam index, the M beam index is the beam index of the M beams included in the candidate beam set; the TRP sends a third message to the terminal, where the third message includes the active beam set size L, and the terminal receives the third message sent by the TRP. The terminal determines X beams according to the M beam index and the active beam set size L, the X beams constitute the active beam set, and the terminal sends a fourth message to the TRP, the fourth message includes X beam indexes, and the X beam indexes are active. The beam index of the X beams included in the beam set. Therefore, before the terminal communicates with the TRP, the terminal notifies the TRP that the beam is filtered from the beam configured by the TRP, and the terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured. The available beams are selected in the beam, which effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, further improving the user experience.

The method steps shown in FIG. 10 above may be specifically implemented by the computer device shown in FIG. 2. By way of example, steps 405 and 410 are implemented by processor 21. Step 401 and step 402 and the like can be implemented by the communication interface 23.

Further, after the terminal sends the fourth message to the TRP, that is, after the step 412, the terminal may continue to measure the reference signal received power corresponding to the beam included in the candidate beam set, and update the beam in the active beam set, including the following detailed steps.

413. The terminal measures a reference signal received power corresponding to a beam included in the candidate beam set.

The terminal measures the reference signal received power of each of the beams corresponding to the M beam indexes configured by the TRP.

414. The terminal receives the power according to the reference signal corresponding to the measured beam, and updates the active beam set.

For a detailed method of updating the active beam set, refer to step 313, and details are not described herein again.

415. The terminal sends a fifth message to the TRP.

The fifth message includes a beam index of the beam included in the updated active beam set.

416. The TRP receives a fifth message sent by the terminal.

Therefore, before the terminal communicates with the TRP, the terminal notifies the TRP that the beam is filtered from the beam configured by the TRP, and the terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured. The available beams are selected in the beam, which effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, further improving the user experience.

417. The TRP sends a sixth message to the terminal.

The sixth message includes a period duration and a subframe offset. Alternatively, the sixth message includes a start subframe and an end subframe.

418. The terminal receives the sixth message sent by the TRP.

The sixth message includes a period duration and a subframe offset. Alternatively, the sixth message includes a start subframe and an end subframe. Therefore, the terminal receives the first message sent by the TRP according to the period duration and the subframe offset, that is, the terminal periodically receives the first message; or the terminal receives the first message sent by the TRP according to the start subframe and the end subframe, that is, the terminal aperiodic The first message is received.

It should be noted that the base station in the embodiment of the present application is a TRP, and the message that the terminal uses to communicate with the TRP may be a MAC-CE message, that is, the message used by the terminal and the TRP according to the embodiment of the present application is MAC- CE message.

It should be noted that the message exchange between the terminal and the eNB and the message exchange between the terminal and the TRP are: when the terminal performs message exchange with the eNB, after the terminal and the eNB successfully configure the beam of the active beam set, the eNB needs to successfully configure the activity. The beam set is forwarded to the TRP for communication with the terminal; when the terminal interacts with the TRP, the eNB first needs to allocate the measurement beam set size N, N beam indexes, the candidate beam set size K, and the active beam set size L to the terminal. The TRP of the communication can the terminal exchange messages with the TRP. Moreover, the terminal can perform message interaction with multiple TRPs, and each TRP can perform message interaction according to the beam management method in the embodiment of the present application, and configure an active beam set.

FIG. 11 is a flowchart of a beam management method according to an embodiment of the present disclosure. The base station in the embodiment of the present application is an eNB. Specifically, as shown in FIG. 11, the method may include:

501. The eNB sends a first message to the terminal.

The eNB configures the measurement beam set size N, the N beam index, and the active beam set size L by transmitting the first message to the terminal. The measurement beam set size N is used to indicate the number of beams included in the measurement beam set, that is, how many beams can be included in the measurement beam set configured by the eNB for the terminal. The N beam indexes are the beam indexes corresponding to the N beams included in the measurement beam set, that is, the beam indexes corresponding to the beams constituting the measurement beam set. The active beam set size L is used to indicate the number of beams included in the active beam set, that is, how many beams can be included in the active beam set configured by the eNB for the terminal. N is an integer greater than or equal to 1, and L is an integer greater than or equal to 1 and less than N.

502. The terminal receives the first message sent by the eNB.

The first message includes a measurement beam set size N, an N beam index, and an active beam set size L configured by the eNB to the terminal. The measurement beam set size N is used to indicate the number of beams included in the measurement beam set, that is, how many beams can be included in the measurement beam set configured by the eNB for the terminal. The N beam indexes are the beam indexes corresponding to the N beams included in the measurement beam set, that is, the beams constituting the measurement beam set. Beam index. The active beam set size L is used to indicate the number of beams included in the active beam set, that is, how many beams can be included in the active beam set configured by the eNB for the terminal. N is an integer greater than or equal to 1, and L is an integer greater than or equal to 1 and less than N.

It should be noted that the first message may be one or more RRC messages. Alternatively, the first message may be one or more MAC-CE messages. That is, the measurement beam set size N, the N beam index, and the active beam set size L may be respectively transmitted by three RRC messages or MAC-CE messages, and the first message carries three RRC messages or MAC-CE messages simultaneously.

503. The terminal determines, according to the measurement beam set size N, the N beam indexes, and the active beam set size L, X beams.

504. The terminal sends a second message to the eNB.

The second message includes X beam indices. The X beam indices are the beam indices of the X beams included in the active beam set.

505. The eNB receives the second message sent by the terminal.

506. The eNB sends a third message to the sending and receiving station.

The third message includes X beam indexes, that is, the eNB sends a set of active beams that are successfully configured by the terminal and the eNB to the transmitting and receiving station that establishes a connection with the terminal.

In the beam management method provided by the embodiment of the present application, the eNB first sends a first message to the terminal, where the first message includes a measurement beam set size N, N beam indexes, and an active beam set size L, and then the terminal receives the eNB. After a message, the X beams are determined according to the measurement beam set size N, the N beam indexes, and the active beam set size L. The X beams form a live beam set, and the terminal sends a second message to the eNB, where the second message includes X Beam index, X beam index is the beam index of X beams included in the active beam set. Therefore, before the terminal communicates with the TRP, the terminal notifies the eNB of the beam that has been filtered by the eNB, and the eNB forwards the beam to the TRP. The terminal is the same as the beam configured by the TRP. The terminal selects a usable beam from the configured beam, which effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, thereby further improving the user experience.

It should be noted that, in the update process described in any one of the foregoing embodiments, the terminal periodically receives the first message; or, the terminal receives the first message sent by the TRP according to the start subframe and the end subframe, that is, the terminal non-period The sexual reception of the first message is equally applicable to this embodiment.

FIG. 12 is a flowchart of a beam management method according to an embodiment of the present disclosure. The base station in the embodiment of the present application is an eNB. Specifically, as shown in FIG. 12, the method may include:

601. The eNB sends, by using the first interface, a measurement beam set size N, an N beam index, and an active beam set size L to the TRP.

The measurement beam set size N is used to indicate the number of beams included in the measurement beam set, that is, how many beams can be included in the measurement beam set configured by the eNB for the TRP. The N beam indexes are the beam indexes corresponding to the N beams included in the measurement beam set, that is, the beam indexes corresponding to the beams constituting the measurement beam set. Active wave The bundle set size L is used to indicate the number of beams included in the active beam set, that is, how many beams can be included in the active beam set configured by the eNB for the TRP. N is an integer greater than or equal to 1, and L is an integer greater than or equal to 1 and less than N.

602. The TRP receives, by using the first interface, a measurement beam set size N, an N beam index, and an active beam set size L sent by the eNB.

603. The TRP sends a first message to the terminal.

The TRP configures the measurement beam set size N, the N beam index, and the active beam set size L by transmitting the first message to the terminal. The measurement beam set size N is used to indicate the number of beams included in the measurement beam set, that is, how many beams can be included in the measurement beam set configured by the TRP for the terminal. The N beam indexes are the beam indexes corresponding to the N beams included in the measurement beam set, that is, the beam indexes corresponding to the beams constituting the measurement beam set. The active beam set size L is used to indicate the number of beams included in the active beam set, that is, how many beams can be included in the active beam set configured by the TRP for the terminal. N is an integer greater than or equal to 1, and L is an integer greater than or equal to 1 and less than N.

604. The terminal receives the first message sent by the TRP.

It should be noted that the first message may be one or more MAC-CE messages. That is, the measurement beam set size N, the N beam index, and the active beam set size L may be respectively transmitted by three MAC-CE messages, and the first message simultaneously carries three MAC-CE messages.

605. The terminal determines, according to the measurement beam set size N, the N beam indexes, and the active beam set size L, X beams.

For detailed methods of determining X beams, reference may be made to step 303, and details are not described herein again.

606. The terminal sends a second message to the TRP.

607. The TRP receives a second message sent by the terminal.

In the beam management method provided by the embodiment of the present application, first, the TRP sends a first message to the terminal, where the first message includes a measurement beam set size N, N beam indexes, and an active beam set size L, and then the terminal receives the TRP transmission. After a message, the X beams are determined according to the measurement beam set size N, the N beam indexes, and the active beam set size L. The X beams form a live beam set, and the terminal sends a second message to the TRP, where the second message includes X Beam index, X beam index is the beam index of X beams included in the active beam set. Therefore, before the terminal communicates with the TRP, the terminal notifies the TRP that the beam is filtered from the beam configured by the TRP, and the terminal is the same as the beam configured by the TRP. When the terminal performs beam coordination with the TRP, the terminal is configured from the configured Selecting a beam that can be used in the beam effectively shortens the length of time for the terminal to cooperate with the TRP, so that the terminal can quickly access the network, further improving the user experience.

It should be noted that the beam included in the beam management method in any embodiment of the present application is an uplink beam, a downlink beam, or an upper and lower beam pair. For example, the beam included in the measurement beam set is an uplink beam, and the beam included in the candidate beam set is an uplink beam, and the beam included in the active beam set is an uplink beam; or the beam included in the measurement beam set is a downlink beam, and the candidate beam set is The beam included is a downlink beam, and the beam included in the active beam set is a downlink beam; or the beam included in the measurement beam set is an uplink and downlink beam pair, and the beam included in the candidate beam set is an uplink and downlink beam pair, and the active beam set includes The beam is the uplink and downlink beam pair.

It should be noted that, in the beam management method of any embodiment of the present application, after receiving the message sent by the terminal, the base station may send an acknowledgement message to the terminal, where the base station may be an eNB or a TRP.

Those skilled in the art will readily appreciate that the present application can be implemented in a combination of hardware or hardware and computer software in combination with the algorithmic steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

The embodiments of the present application may perform the division of the function modules on the terminal and the base station according to the foregoing method. For example, each function module may be divided according to each function, or two or more functions may be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.

FIG. 13 is a schematic diagram showing a possible composition of the terminal involved in the foregoing and the embodiment. As shown in FIG. 13, the terminal 70 may include the following detailed units:

The receiving unit 701 is configured to receive a first message sent by the base station, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, and the measurement beam set includes a beam corresponding to the N beam indexes, where N is greater than An integer equal to 1, the candidate beam set size K being an integer greater than or equal to 1 and smaller than the measurement beam set size N;

The processing unit 702 is configured to determine M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K, where the M beams form a candidate beam set, where M is an integer greater than or equal to 1 and less than or equal to K;

The sending unit 703 is configured to send a second message to the base station, where the second message includes M beam indexes, where the M beam indexes are beam indexes of the M beams included in the candidate beam set.

The receiving unit 701 is further configured to receive a third message sent by the base station, where the third message includes an active beam set size L, and the active beam set size L is an integer greater than or equal to 1 and smaller than the candidate beam set size K;

The processing unit 702 is further configured to determine X beams according to the M beam indexes and the active beam set size L, where the X beams form a set of active beams, where X is an integer greater than or equal to 1 and less than or equal to L;

The sending unit 703 is further configured to send a fourth message to the base station, where the fourth message includes X beam indexes, and the X beam indexes are beam indexes of X beams included in the active beam set.

It should be noted that all the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.

The terminal provided in this embodiment of the present application is configured to perform the foregoing beam management method, so that the same effect as the beam management method described above can be achieved.

In the embodiment of the present application, the terminal 70 is presented in the form of a functional unit. A "unit" herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that provide the functionality described above. Device. In a simple embodiment, those skilled in the art will appreciate that terminal 70 can take the form shown in FIG. The receiving unit 701, the processing unit 702, and the transmitting unit 703 can be implemented by the computer device of FIG. 2. Specifically, the receiving unit 701 and the transmitting unit 703 can be implemented by the communication interface 23, and the processing unit 702 can be implemented by the processor 21.

FIG. 14 shows a possible composition diagram of the base station involved in the foregoing and the embodiments. As shown in FIG. 14, the base station 80 may include the following detailed units:

The sending unit 801 is configured to send a first message to the terminal, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, and the measurement beam set includes a beam corresponding to the N beam indexes, where N is greater than or equal to An integer of 1, the candidate beam set size K is an integer greater than or equal to 1 and smaller than the measurement beam set size N;

The receiving unit 802 is configured to receive a second message sent by the terminal, where the second message includes M beam indexes, where M beam indexes are beam indexes of M beams included in the candidate beam set, and M is greater than or equal to 1 and less than or equal to K. Integer

The sending unit 801 is further configured to send, to the terminal, a third message, where the third message includes an active beam set size L, and the active beam set size L is an integer greater than or equal to 1 and smaller than the candidate beam set size K;

The receiving unit 802 is further configured to receive a fourth message sent by the terminal, where the fourth message includes X beam indexes, and the X beam indexes are beam indexes of X beams included in the active beam set.

The base station provided by the embodiment of the present application is configured to perform the foregoing beam management method, so that the same effect as the beam management method described above can be achieved.

In the embodiment of the present application, the base station 80 is presented in the form of a functional unit. A "unit" herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that provide the functionality described above. Device. In a simple embodiment, those skilled in the art will appreciate that base station 80 can take the form shown in FIG. The receiving unit 802 and the transmitting unit 801 can be implemented by the computer device of FIG. 2. Specifically, the receiving unit 802 and the transmitting unit 801 can be implemented by the communication interface 23.

Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above functional modules is illustrated. In practical applications, the above functions can be allocated according to needs. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative, for example, The division of a module or unit is only a logical function division, and the actual implementation may have another division manner, for example, multiple units or components may be combined or may be integrated into another device, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be embodied in the form of a software product in the form of a software product in essence or in the form of a contribution to the prior art, and the software product is stored in a storage medium. A number of instructions are included to cause a device (which may be a microcontroller, chip, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. . Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A beam management method, comprising:

Receiving, by the terminal, the first message sent by the base station, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, where the measurement beam set includes beams corresponding to the N beam indexes, N is an integer greater than or equal to 1, and the candidate beam set size K is an integer greater than or equal to 1 and smaller than the measurement beam set size N;

Determining, by the terminal, M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K, where the M beams form a candidate beam set, where the M is greater than or equal to 1 and less than An integer equal to K;

Transmitting, by the terminal, a second message to the base station, where the second message includes M beam indexes, where the M beam indexes are beam indexes of the M beams included in the candidate beam set;

The terminal receives a third message sent by the base station, where the third message includes an active beam set size L, and the active beam set size L is an integer greater than or equal to 1 and smaller than the candidate beam set size K;

Determining, by the terminal, the X beams according to the M beam index and the active beam set size L, where the X beams form an active beam set, where the X is an integer greater than or equal to 1 and less than or equal to L;

The terminal sends a fourth message to the base station, where the fourth message includes X beam indexes, and the X beam indexes are beam indexes of the X beams included in the active beam set.
The method of claim 1 wherein

Determining, by the terminal, the M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K includes:

The terminal measures a reference signal received power corresponding to a beam included in the measurement beam set;

Determining, by the terminal, the M beams included in the candidate beam set according to the reference signal received power corresponding to the measured beam;

or,

Determining, by the terminal, the M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K includes:

The terminal measures a reference signal received power corresponding to a beam included in the measurement beam set;

The reference signal received by the terminal to the measured beam is sorted from large to small, and the first M beams are filtered from the N beams according to the largest to the smallest, and the first message further includes the M, M is used to indicate the number of beams selected from the beams corresponding to the N beam indices.
The method of claim 2 wherein:

Determining, by the terminal, X beams according to the M beam indexes and the active beam set size L includes:

The terminal measures a reference signal received power corresponding to a beam included in the candidate beam set;

Determining, by the terminal, the X beams included in the active beam set according to the reference signal received power corresponding to the measured beam;

or,

Determining, by the terminal, X beams according to the M beam indexes and the active beam set size L includes:

The terminal measures a reference signal received power corresponding to a beam included in the candidate beam set;

The reference signal received by the terminal corresponding to the measured beam is sorted from largest to smallest, from the M The first X beams are filtered out from the largest to the smallest in the beam, and the third message further includes the X, where the X is used to indicate the number of beams selected from the beams corresponding to the M beam indexes.
The method according to any one of claims 1-3, wherein the terminal determines X beams according to the M beam indexes and the active beam set size L, and the X beams constitute After the active beam collection, the method further includes:

The terminal measures a reference signal received power corresponding to a beam included in the candidate beam set;

The terminal updates the active beam set according to the reference signal received power corresponding to the measured beam;

The terminal sends a fifth message to the base station, where the fifth message includes a beam index of a beam included in the updated active beam set.
The method according to any one of claims 1 to 4, wherein the method further comprises:

Receiving, by the terminal, a sixth message sent by the base station, where the sixth message includes a period duration and a subframe offset, or the sixth message includes a start subframe and an end subframe;

Receiving, by the terminal, the first message sent by the base station includes:

Receiving, by the terminal, the first message sent by the base station according to the period duration and the subframe offset;

Or the terminal receives the first message sent by the base station according to the start subframe and the end subframe.
A method according to any of claims 1-5, wherein

The terminal interacts with the base station by using a radio resource control RRC message or a medium access control-control unit MAC-CE message, where the message is the first message, the second message, the third message, the fourth message, The fifth message or the sixth message, the first message includes one or more of the RRC messages, or the first message includes one or more of the MAC-CE messages.
A method according to any of claims 1-6, characterized in that

The beam included in the measurement beam set is an uplink beam, and the beam included in the candidate beam set is an uplink beam, and the beam included in the active beam set is an uplink beam;

Or the beam included in the measurement beam set is a downlink beam, and the beam included in the candidate beam set is a downlink beam, and the beam included in the active beam set is a downlink beam;

Or the beam included in the measurement beam set is an uplink and downlink beam pair, and the beam included in the candidate beam set is an uplink and downlink beam pair, and the beam included in the active beam set is an uplink and downlink beam pair.
A beam management method, comprising:

The base station sends a first message to the terminal, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, the measurement beam set includes a beam corresponding to the N beam indexes, and the N For an integer greater than or equal to 1, the candidate beam set size K is an integer greater than or equal to 1 and smaller than the measurement beam set size N;

Receiving, by the base station, a second message that is sent by the terminal, where the second message includes M beam indexes, where the M beam indexes are beam indexes of the M beams included in the candidate beam set, and the M An integer greater than or equal to 1 and less than or equal to K;

The base station sends a third message to the terminal, where the third message includes an active beam set size L, and the active beam set size L is an integer greater than or equal to 1 and smaller than the candidate beam set size K;

The base station receives a fourth message sent by the terminal, where the fourth message includes X beam indexes, where the X beam indexes are beam indexes of the X beams included in the active beam set.
The method according to claim 8, wherein after the receiving, by the base station, the fourth message sent by the terminal, the method further comprises:

The base station receives a fifth message sent by the terminal, where the fifth message includes a beam index of a beam included in the updated active beam set.
The method according to claim 8 or 9, wherein the method further comprises:

The base station sends a sixth message to the terminal, where the sixth message includes a period duration and a subframe offset, or the sixth message includes a start subframe and an end subframe.
A method according to any of claims 8-10, wherein

Before the sending, by the base station, the first message to the terminal, the method further includes:

The base station acquires a measurement beam set size N, N beam indexes, a candidate beam set size K, and an active beam set size L through the first interface.
A method according to any of claims 8-10, wherein

After the receiving, by the base station, the fourth message sent by the terminal, the method further includes:

The base station forwards a seventh message by using the first interface, where the seventh message includes a beam index of a beam included in the active beam set.
Method according to claim 9 or 10, characterized in that

After the receiving, by the base station, the fifth message sent by the terminal, the method further includes:

The base station forwards an eighth message by using the first interface, where the eighth message includes a beam index of the beam included in the updated active beam set.
A terminal, comprising:

a receiving unit, configured to receive a first message sent by the base station, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, where the measurement beam set includes the N beam indexes a beam, the N is an integer greater than or equal to 1, and the candidate beam set size K is an integer greater than or equal to 1 and smaller than the measurement beam set size N;

a processing unit, configured to determine M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K, where the M beams form a candidate beam set, and the M is greater than or equal to 1 And an integer less than or equal to K;

a sending unit, configured to send a second message to the base station, where the second message includes M beam indexes, where the M beam indexes are beam indexes of the M beams included in the candidate beam set;

The receiving unit is further configured to receive a third message sent by the base station, where the third message includes an active beam set size L, where the active beam set size L is greater than or equal to 1 and smaller than the candidate beam set size K Integer

The processing unit is further configured to determine X beams according to the M beam indexes and the active beam set size L, where the X beams constitute a active beam set, where the X is greater than or equal to 1 and less than or equal to L. Integer

The sending unit is further configured to send a fourth message to the base station, where the fourth message includes X beam indexes, where the X beam indexes are beam indexes of the X beams included in the active beam set. .
The terminal according to claim 14, wherein

The processing unit is specifically configured to:

Measure a reference signal received power corresponding to a beam included in the measurement beam set;

Determining M beams included in the candidate beam set according to reference signal received power corresponding to the measured beam;

or,

The processing unit is specifically configured to:

Measure a reference signal received power corresponding to a beam included in the measurement beam set;

The reference signal received power corresponding to the measured beam is sorted from large to small, and the first M beams are filtered from the N beams according to the largest to the smallest, the first message further includes the M, and the M is used. And indicating the number of beams selected from the beams corresponding to the N beam indexes.
The terminal of claim 15 wherein:

The processing unit is specifically configured to:

Measure a reference signal received power corresponding to a beam included in the candidate beam set;

Determining X beams included in the active beam set according to reference signal received power corresponding to the measured beam;

or,

The processing unit is specifically configured to:

Measure a reference signal received power corresponding to a beam included in the candidate beam set;

The reference signal received power corresponding to the measured beam is sorted from large to small, and the first X beams are filtered from the M beams according to the largest to the smallest, the third message further includes the X, and the X is used. And indicating the number of beams selected from the beams corresponding to the M beam indexes.
The terminal according to any one of claims 14-16, wherein the processing unit is further configured to:

Measure a reference signal received power corresponding to a beam included in the candidate beam set;

Updating the active beam set according to a reference signal received power corresponding to the measured beam;

The sending unit is further configured to send a fifth message to the base station, where the fifth message includes a beam index of a beam that is included in the updated active beam set.
The terminal according to any one of claims 14-17, wherein the receiving unit is further configured to:

Receiving a sixth message sent by the base station, where the sixth message includes a period duration and a subframe offset, or the sixth message includes a start subframe and an end subframe;

The receiving unit is specifically configured to:

Receiving, by the period duration and the subframe offset, a first message sent by the base station;

Or receiving a first message sent by the base station according to the start subframe and the end subframe.
A terminal according to any one of claims 14-18, characterized in that

The terminal interacts with the base station by using a radio resource control RRC message or a medium access control-control unit MAC-CE message, where the message is the first message, the second message, the third message, the fourth message, The fifth message or the sixth message, the first message includes one or more of the RRC messages, or the first message includes one or more of the MAC-CE messages.
A terminal according to any of claims 14-19, characterized in that

The beam included in the measurement beam set is an uplink beam, and the candidate beam set includes a beam a row beam, and the beam included in the active beam set is an uplink beam;

Or the beam included in the measurement beam set is a downlink beam, and the beam included in the candidate beam set is a downlink beam, and the beam included in the active beam set is a downlink beam;

Or the beam included in the measurement beam set is an uplink and downlink beam pair, and the beam included in the candidate beam set is an uplink and downlink beam pair, and the beam included in the active beam set is an uplink and downlink beam pair.
A base station, comprising:

a sending unit, configured to send a first message to the terminal, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, where the measurement beam set includes a beam corresponding to the N beam indexes The N is an integer greater than or equal to 1, and the candidate beam set size K is an integer greater than or equal to 1 and smaller than the measurement beam set size N;

a receiving unit, configured to receive a second message sent by the terminal, where the second message includes M beam indexes, where the M beam indexes are beam indexes of the M beams included in the candidate beam set, where M is an integer greater than or equal to 1 and less than or equal to K;

The sending unit is further configured to send a third message to the terminal, where the third message includes an active beam set size L, where the active beam set size L is greater than or equal to 1 and less than the candidate beam set size K. Integer

The receiving unit is further configured to receive a fourth message sent by the terminal, where the fourth message includes X beam indexes, where the X beam indexes are beams of the X beams included in the active beam set index.
The base station according to claim 21, characterized in that

The receiving unit is further configured to receive a fifth message sent by the terminal, where the fifth message includes a beam index of a beam included in the updated active beam set.
A base station according to claim 21 or 22, characterized in that

The sending unit is further configured to send a sixth message to the terminal, where the sixth message includes a period duration and a subframe offset, or the sixth message includes a start subframe and an end subframe.
A base station according to any of claims 21-23, characterized in that

The receiving unit is further configured to acquire, by using the first interface, a measurement beam set size N, N beam indexes, a candidate beam set size K, and an active beam set size L.
A base station according to any of claims 21-23, characterized in that

The sending unit is further configured to forward, by using the first interface, a seventh message, where the seventh message includes a beam index of a beam included in the active beam set.
A base station according to claim 22 or 23, characterized in that

The sending unit is further configured to forward an eighth message by using the first interface, where the eighth message includes a beam index of the updated beam included in the active beam set.
A terminal, comprising: a processor, a memory, a transceiver, and a bus; wherein the processor, the memory, and the transceiver communicate with each other through the bus;

The memory is used to store instructions:

The transceiver is configured to receive a first message sent by a base station, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, where the measurement beam set includes the N beam indexes Corresponding beams, the N is an integer greater than or equal to 1, and the candidate beam set size K is greater than or equal to 1 And less than an integer of the measurement beam set size N;

The processor, configured to invoke an instruction in the memory, to perform: determining M beams according to the measurement beam set size N, the N beam indexes, and the candidate beam set size K, where the M The beam constitutes a set of candidate beams, and the M is an integer greater than or equal to 1 and less than or equal to K;

The transceiver is further configured to send a second message to the base station, where the second message includes M beam indexes, where the M beam indexes are beam indexes of the M beams included in the candidate beam set ;

The transceiver is further configured to receive a third message sent by the base station, where the third message includes an active beam set size L, where the active beam set size L is greater than or equal to 1 and less than the candidate beam set size K Integer

The method performed by the processor further includes: determining X beams according to the M beam indexes and the active beam set size L, the X beams constituting a set of active beams, the X being greater than or equal to 1 and less than or equal to An integer of L;

The transceiver is further configured to send a fourth message to the base station, where the fourth message includes X beam indexes, where the X beam indexes are beam indexes of the X beams included in the active beam set .
A base station, comprising: a processor, a memory, a transceiver, and a bus; wherein the processor, the memory, and the transceiver communicate with each other through the bus;

The memory is used to store instructions:

The transceiver is configured to send a first message to the terminal, where the first message includes a measurement beam set size N, N beam indexes, and a candidate beam set size K, where the measurement beam set includes the N beam indexes a beam, the N is an integer greater than or equal to 1, and the candidate beam set size K is an integer greater than or equal to 1 and smaller than the measurement beam set size N;

The transceiver is further configured to receive a second message sent by the terminal, where the second message includes M beam indexes, where the M beam indexes are beams of the M beams included in the candidate beam set Index, the M being an integer greater than or equal to 1 and less than or equal to K;

The transceiver is further configured to send a third message to the terminal, where the third message includes an active beam set size L, where the active beam set size L is greater than or equal to 1 and less than the candidate beam set size K. Integer

The transceiver is further configured to receive a fourth message sent by the terminal, where the fourth message includes X beam indexes, where the X beam indexes are beams of the X beams included in the active beam set index.
A communication system, comprising:

A terminal according to claim 14 to claim 20 or claim 27, and a base station as claimed in claim 21 to claim 26 or claim 28.