WO2018028470A1

WO2018028470A1 - Beam management method and related equipment

Info

Publication number: WO2018028470A1
Application number: PCT/CN2017/095439
Authority: WO
Inventors: 高秋彬; 陈润华; 塔玛拉卡拉盖施; 苏昕
Original assignee: 电信科学技术研究院
Priority date: 2016-08-12
Filing date: 2017-08-01
Publication date: 2018-02-15
Also published as: CN107733473A

Abstract

The present disclosure provides a beam management method and related device. The method comprises: a first device receives a first beam switch notification message sent by a second device. The first beam switch notification message comprises an identifier of a target beam to be switched to, and the target beam is one or more beams. According to the identifier, the first device switches to a beam corresponding to the target beam or switches to the target beam.

Description

Beam management method and related equipment

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201610659889.3, filed on Aug.

Technical field

The present disclosure relates to the field of communications technologies, and in particular, to a beam management method and related equipment.

Background technique

In order to provide the performance of mobile communication systems, large-scale antenna technology has been introduced in mobile communication systems. For example, for base stations, all-digital large-scale antennas can have up to 128/256/512 antenna elements and up to 128/256/512 transceivers. Unit, each antenna element is connected to a transceiver unit. The terminal measures channel state information and feeds back by transmitting pilot signals up to 128/256/512 antenna ports. For the terminal, an antenna array of up to 32/64 antenna elements can also be configured. Through the beamforming on both sides of the base station and the terminal, a huge beamforming gain is obtained to compensate for the signal attenuation caused by the path loss. Due to the all-digital antenna array, each antenna element has a separate transceiver unit, which will greatly increase the size, cost and power consumption of the device. In order to reduce the size, cost and power consumption of the device, a technical solution based on analog beamforming is proposed. The main feature of the analog beamforming is weighted shaping of the intermediate frequency or radio frequency signal by the phase shifter. The advantage is that all transmit (receive) antennas have only one transceiver unit, which is simple to implement, reducing cost, size and power consumption.

In addition, in order to further improve the analog beamforming performance, a digital analog hybrid beamforming transceiver architecture scheme is proposed, in which the transmitting end and the receiving end respectively have

with

Transceiver unit, number of antennas at the transmitting end

Receiver antenna number

The maximum number of parallel transport streams supported by beamforming is

Such a hybrid beamforming structure balances the flexibility of digital beamforming and the low complexity of analog beamforming, and has the ability to support multiple data streams and simultaneous shaping of multiple users, while complexity is also controlled. Within a reasonable range.

However, there is a problem of beam misalignment between the device and the device, whether in analog beamforming, digital-analog hybrid beamforming, or digital beamforming.

Summary of the invention

It is an object of the present disclosure to provide a beam management method and related apparatus to solve the problem of beam misalignment between a device and a device.

In order to achieve the above object, according to a first aspect of embodiments of the present disclosure, a beam management method is provided, including:

Receiving, by the first device, a first beam switching notification message sent by the second device, where the first beam switching notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams;

The first device switches to a beam corresponding to the target beam or the target beam according to the identifier.

In one of the possible embodiments, the first device, according to the identifier, switches to a beam corresponding to the target beam or the target beam, including:

After the first beam switching notification message is valid, the first device switches to the beam corresponding to the target beam or the target beam according to the identifier.

In a possible implementation, the effective time of the first beam switching notification message is that the first device receives the receiving time of the first beam switching notification message plus a time interval, where the time interval Predetermined, or the time interval is determined by the time interval information carried in the first beam switching notification message.

In a possible implementation, the first beam switching notification message includes time-frequency resource indication information, where the time-frequency resource indication information is used to indicate an effective time-frequency resource location of the target beam.

In one of the possible embodiments, if the target beam is multiple beams, the time-frequency resource indication information is used to indicate an effective time-frequency resource location of each of the multiple beams; or

And if the target beam is multiple beams, the time-frequency resource indication information is used to indicate that the multiple beams are transmitted in the same subframe, and the effective frequency domain resource location of each beam in the subframe is indicated.

In one of the possible embodiments, the target beam is a target downlink transmit beam, and the first device switches to a beam corresponding to the target beam or the target beam according to the identifier, including:

The first device switches to a downlink receiving beam corresponding to the target downlink sending beam according to the identifier.

In one of the possible embodiments, the method further includes:

Receiving, by the first device, a plurality of downlink beam training signals sent by the second device, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the second device;

The first device selects one or more downlink transmit beams of the multiple downlink transmit beams as the recommended downlink transmit beam by measuring the multiple downlink beam training signals;

The first device sends the information about the recommended downlink transmission beam to the second device, so that the second device determines, according to the information about the recommended downlink transmission beam, whether to change the downlink transmission of the signal transmitted by the first device. Beam.

In one of the possible embodiments, the method further includes:

Determining, by the first device, a downlink receiving beam corresponding to the recommended downlink transmitting beam, and storing a correspondence between the recommended downlink transmitting beam and a corresponding downlink receiving beam, from the plurality of downlink receiving beams of the first device; or

The first device determines a downlink receiving beam corresponding to the multiple downlink transmitting beams from the plurality of downlink receiving beams of the first device, and saves a correspondence between the multiple downlink transmitting beams and the corresponding downlink receiving beams.

In one of the possible embodiments, the method further includes:

The first device receives a second beam switching notification message sent by the second device, where the second beam switching notification message includes an identifier of a target uplink sending beam to be switched, and the target uplink sending beam is one Or multiple beams;

The first device switches to the target uplink transmit beam.

In one of the possible embodiments, the first device switches to the target uplink transmit beam, including:

After the second beam switching notification message is valid, the first device switches to the target uplink transmission beam.

In a possible implementation, the effective time of the second beam switching notification message is that the first device receives the receiving time of the second beam switching notification message plus a time interval, where the time interval is Preset, or the time interval is switched by the second beam notification message The time interval information carried in is determined.

In one of the possible embodiments, the method further includes:

The first device sends a plurality of uplink beam training signals to the second device, where the multiple uplink beam training signals are training signals of multiple uplink transmit beams of the first device, so that the second device Determining whether it is necessary to change an uplink transmit beam of the first device.

In one of the possible embodiments, the target beam is a target uplink transmit beam, and the first device switches to a beam corresponding to the target beam or the target beam according to the identifier, including:

The first device switches to the target uplink transmit beam according to the identifier.

According to a second aspect of the embodiments of the present disclosure, a beam management method is provided, including:

The second device receives, by the first device, a first beam switching notification message, where the first beam switching notification message includes an identifier of a target beam to be switched, and the target beam is one or more beams;

The second device switches to the target beam or a beam corresponding to the target beam.

In one of the possible embodiments, the second device switches to the target beam or the beam corresponding to the target beam, including:

After the first beam switching notification message is valid, the second device switches to the target beam or the beam corresponding to the target beam.

In a possible implementation, the effective time of the first beam switching notification message is that the first device receives the receiving time of the first beam switching notification message plus a time interval, where the time interval For example, the time interval is determined by the time interval information carried in the first beam switching notification message.

In one of the possible embodiments, the target beam is a target downlink transmit beam, and the second device switches to the target beam or the beam corresponding to the target beam, including:

The second device switches to a target downlink transmit beam.

In one of the possible embodiments, the method further includes:

The second device sends a plurality of downlink beam training signals to the first device, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the second device;

The second device receives the information about the recommended downlink transmission beam sent by the first device, where the recommended downlink transmission beam is the measurement by the first device by using the training signal of the multiple downlink beams. One or more selected downlink transmit beams of the plurality of downlink transmit beams;

The second device determines, according to the information about the recommended downlink transmit beam, whether to change a downlink transmit beam that transmits a signal to the first device.

In one of the possible embodiments, the method further includes:

The second device sends a second beam switching notification message to the first device, where the second beam switching notification message includes an identifier of a target uplink sending beam to be switched, and the target uplink sending beam is one or Multiple beams;

The second device switches to a target uplink receive beam.

In one of the possible embodiments, the second device switches to the target uplink receiving beam, including:

The second device switches to a target uplink receiving beam before transmitting the second beam switching notification message; or

After the second beam switching notification message is valid, the second device switches to the target uplink receiving beam, where the target uplink transmitting beam corresponds to the target uplink receiving beam.

In a possible implementation, the effective time of the second beam switching notification message is that the first device receives the receiving time of the second beam switching notification message plus a time interval, where the time interval is Preset, or the time interval is determined by time interval information carried in the second beam switching notification message.

In one of the possible embodiments, the method further includes:

The second device receives an uplink beam training signal sent by the first device;

The second device determines the target uplink transmit beam according to the uplink beam training signal.

In one of the possible embodiments, the method further includes:

Determining, by the second device, the target uplink receiving beam according to the target downlink transmission beam;

Receiving, by the second device, the uplink beam training signal sent by the first device, including:

The second device uses the target uplink receiving beam to receive an uplink beam training signal sent by the first device.

In one of the possible embodiments, the method further includes:

The second device determines the target uplink receiving beam corresponding to the target uplink sending beam by receiving the uplink beam training signal sent by the first device; or

The second device determines the target uplink receiving beam corresponding to the target uplink sending beam by receiving an uplink signal sent by the first device.

In one of the possible embodiments, the target beam is a target uplink transmit beam, and the second device switches to the target beam or the beam corresponding to the target beam, including:

The second device switches to an uplink receiving beam corresponding to the target uplink sending beam.

According to a third aspect of the embodiments of the present disclosure, a device is provided, the device being a first device, including:

a first receiving module, configured to receive a first beam switching notification message sent by the second device, where the first beam switching notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams ;

And a first switching module, configured to switch to a beam corresponding to the target beam or the target beam according to the identifier.

In a possible implementation, the first switching module is configured to switch to a beam corresponding to the target beam or the target beam according to the identifier after the first beam switching notification message is valid.

In a possible implementation, the first beam switching notification message includes time-frequency resource indication information, where the time-frequency resource indication information is used to indicate an effective time-frequency of the target beam. Resource location.

In a possible implementation, the target beam is a target downlink transmit beam, and the first switching module is configured to switch to a downlink receive beam corresponding to the target downlink transmit beam according to the identifier.

In one of the possible embodiments, the device further includes:

a second receiving module, configured to receive a plurality of downlink beam training signals sent by the second device, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the second device;

a selection module, configured to select one or more downlink transmit beams of the multiple downlink transmit beams as the recommended downlink transmit beam by using the measurement of the multiple downlink beam training signals;

a first sending module, configured to send information about the recommended downlink transmit beam to the second device, to enable the second device to determine, according to information about the recommended downlink transmit beam, whether to change a signal for transmitting the first device Downstream transmit beam.

In one of the possible embodiments, the device further includes:

a first determining module, configured to determine, from a plurality of downlink receiving beams of the first device, a downlink receiving beam corresponding to the recommended downlink transmitting beam, and save a correspondence between the recommended downlink transmitting beam and a corresponding downlink receiving beam Relationship; or

a second determining module, configured to determine a downlink receiving beam corresponding to the multiple downlink transmitting beams from the plurality of downlink receiving beams of the first device, and save a correspondence between the multiple downlink transmitting beams and corresponding downlink receiving beams relationship.

In one of the possible embodiments, the device further includes:

a third receiving module, configured to receive a second beam switching notification message sent by the second device, where the second beam switching notification message includes an identifier of a target uplink sending beam to be switched, and the target uplink transmitting beam One or more beams;

And a second switching module, configured to switch to the target uplink transmit beam.

In one possible embodiment, the second switching module is configured to cut in the second beam After the notification message is valid, the target uplink transmission beam is switched.

In one of the possible embodiments, the device further includes:

a second sending module, configured to send, to the second device, a plurality of uplink beam training signals, where the multiple uplink beam training signals are training signals of multiple uplink transmit beams of the first device, so that the The second device determines whether it is necessary to change the uplink transmit beam of the first device.

In one of the possible embodiments, the target beam is a target uplink transmit beam, and the first switching module is configured to switch to the target uplink transmit beam according to the identifier.

According to a fourth aspect of the embodiments of the present disclosure, a device is provided, the device being a second device, including:

a first sending module, configured to receive, by the first device, a first beam switching notification message, where the first beam switching notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams ;

The first switching module is configured to switch to the target beam or a beam corresponding to the target beam.

In a possible implementation, the first switching module is configured to switch to the target beam or the beam corresponding to the target beam after the first beam switching notification message is valid.

If the target beam is multiple beams, the time-frequency resource indication information is used to indicate the multiple The beams are transmitted in the same subframe and indicate the effective frequency domain resource location of each beam within the subframe.

In one possible embodiment, the target beam is a target downlink transmit beam, and the first switching module is configured to switch to a target downlink transmit beam.

In one of the possible embodiments, the device further includes:

a second sending module, configured to send, to the first device, a plurality of downlink beam training signals, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the second device;

a first receiving module, configured to receive information about a recommended downlink transmit beam sent by the first device, where the recommended downlink transmit beam is a measurement by the first device by using the training signal of the multiple downlink beams One or more selected downlink transmission beams of the plurality of downlink transmission beams;

And a first determining module, configured to determine, according to the information about the recommended downlink transmit beam, whether to change a downlink transmit beam that transmits a signal to the first device.

In one of the possible embodiments, the device further includes:

a second sending module, configured to send a second beam switching notification message to the first device, where the second beam switching notification message includes an identifier of a target uplink sending beam to be switched, where the target uplink sending beam is One or more beams;

The second switching module is configured to switch to the target uplink receiving beam.

In a possible implementation, the second switching module is configured to switch to a target uplink receiving beam before sending the second beam switching notification message; or

The second switching module is configured to switch to the target uplink receiving beam after the second beam switching notification message is valid, where the target uplink sending beam corresponds to the target uplink receiving beam.

In a possible embodiment, the second device further includes:

a second receiving module, configured to receive an uplink beam training signal sent by the first device;

And a second determining module, configured to determine the target uplink transmit beam according to the uplink beam training signal.

In a possible embodiment, the second device further includes:

a third determining module, configured to determine, according to the target downlink transmit beam, the target uplink receive beam;

The second receiving module is configured to receive an uplink beam training signal sent by the first device by using the target uplink receiving beam.

In one of the possible embodiments, the device further includes:

a fourth determining module, configured to determine, by receiving the uplink beam training signal sent by the first device, the target uplink receiving beam corresponding to the target uplink sending beam; or

And a fifth determining module, configured to determine, by receiving the uplink signal sent by the first device, the target uplink receiving beam corresponding to the target uplink sending beam.

In a possible implementation, the target beam is a target uplink transmit beam, and the first switching module is configured to switch to an uplink receive beam corresponding to the target uplink transmit beam.

According to a fifth aspect of the embodiments of the present disclosure, a first device is provided, including:

Processor;

a memory coupled to the processor via a bus interface and configured to store programs and data used by the processor in performing operations;

a transceiver for communicating with various other devices on a transmission medium,

When the processor invokes and executes the program and data stored in the memory, the first device performs the following processing:

Receiving, by the second device, a first beam switching notification message, where the first beam switching notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams;

Switching to a beam corresponding to the target beam or the target beam according to the identifier.

According to a sixth aspect of the embodiments of the present disclosure, a second device is provided, including:

Processor;

When the processor invokes and executes the program and data stored in the memory, the second device performs a process of: receiving, by the first device, a first beam switching notification message, where The first beam switching notification message includes an identifier of a target beam to be switched, and the target beam is one or more beams;

Switching to the target beam or the beam corresponding to the target beam.

The above technical solution of the present disclosure has at least the following beneficial effects:

In an embodiment of the present disclosure, the first device receives a first beam switching notification message sent by the second device, where the first beam switching notification message includes an identifier of a target beam to be switched to; Identifying, switching to a beam corresponding to the target beam or the target beam. In this way, the first device switches the beam according to the handover notification message sent by the second device to implement beam alignment between the device and the device.

DRAWINGS

1 is a schematic structural diagram of a network applicable to an embodiment of the present disclosure;

FIG. 2 is a schematic flowchart diagram of a beam management method according to an embodiment of the present disclosure;

FIG. 3 is a schematic flowchart of a timing of beam management according to an embodiment of the present disclosure; FIG.

FIG. 4 is a schematic flowchart of another beam management sequence provided by an embodiment of the present disclosure; FIG.

FIG. 5 is a schematic flowchart diagram of another beam management method according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of another beam management method according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of another base station according to an embodiment of the present disclosure;

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

FIG. 15 is a schematic structural diagram of another base station according to an embodiment of the present disclosure;

FIG. 16 is a schematic structural diagram of another base station according to an embodiment of the present disclosure;

FIG. 17 is a schematic structural diagram of another base station according to an embodiment of the present disclosure;

FIG. 18 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure;

FIG. 19 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.

detailed description

The technical problems, the technical solutions, and the advantages of the present invention will be more clearly described in the following description.

In the embodiment of the present disclosure, the first device may be a terminal or a base station, and the second device may also be a terminal or a base station, for example, the first device is a terminal, and the second device is a base station, and the terminal and the base station may be implemented. The beam, or the first device is a base station, and the second device is a terminal, and the beam between the terminal and the base station can also be implemented, or the first device is a base station, and the second device is also a base station, and the base station and the base station can be implemented. The beam alignment between the terminal and the terminal can be achieved by the beam alignment between the terminal and the terminal. Of course, in the embodiment of the present disclosure, the first device is not limited to a terminal or a base station. For example, the first device may also be another network side device or a communication device. Similarly, the second device is not limited to only The terminal or the device, for example, the second device may also be another network side device or a communication device, which is not limited by the embodiment of the present disclosure. In the specific implementation, the first device is used as the terminal, and the second device is used as the base station for example. In other cases, for example, the first device is a base station, the second device is also a base station, and the first device is a base station, and the second device is a second device. For a specific implementation of the case of a base station, etc., reference may be made to the first device as a terminal, and the second device is a specific implementation manner of the base station, and details are not described herein.

Referring to FIG. 1, FIG. 1 is a schematic structural diagram of a network applicable to an embodiment of the present disclosure. As shown in FIG. 1, one or more terminals 11 and a base station 12 are included. The terminal 11 may be a user equipment (User Equipment, UE), for example, may be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), or a personal digital assistant (PDA). A terminal device such as a mobile Internet device (MID) or a wearable device (Wearable Device), it should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present disclosure. The terminal 11 can establish communication with the base station 12, wherein the network in the figure can indicate that the terminal 11 and the base station 12 establish wireless communication, and the base station 12 can be a macro station, such as an LTE eNB, a 5G NR NB, etc., or can be a small station, such as Low power node (LPN: low power node) pico, femto and other small stations, or may be an access point (AP, access point); The base station 12 may also be a network node formed by a central unit (CU) and a plurality of transmission reception points (TRPs) managed and controlled by the central unit (CU). In addition, there is one or more cells under one base station (for example: different frequency points or sector splits). It should be noted that the specific type of the base station 12 is not limited in the embodiment of the present disclosure.

Referring to FIG. 2, an embodiment of the present disclosure provides a beam management method, as shown in FIG. 2, including the following steps:

The terminal receives the first beam switching notification message sent by the base station, where the first beam switching notification message includes an identifier of a target beam to be switched, and the target beam is one or more beams;

202. The terminal switches to a beam corresponding to the target beam or the target beam according to the identifier.

The target beam may be a downlink transmit beam or may be an uplink transmit beam. In addition, the identifier of the target beam may be other information that identifies the target beam, such as the number of the target beam. Since the target beam may be one or more, the terminal may switch to one or more beams according to the message sent by the base station through the foregoing steps. In addition, the beam corresponding to the target beam may be determined by the terminal before performing step 202. For example, the terminal stores the correspondence between the target beam and the corresponding beam. Of course, the beam corresponding to the target beam that is randomly selected by the terminal or determined according to other reasons is not queued. When the target beam is multiple beams, each beam has a different or the same corresponding beam.

In addition, if the target beam is a downlink transmit beam, step 202 may be to switch to a downlink receive beam corresponding to the target beam. If the target beam is an uplink transmit beam, the step may be to switch to the target beam. In addition, on the base station side, the base station performs corresponding handover. For example, if the target beam is a downlink transmission beam, the base station switches to the target beam. If the target beam is an uplink transmission beam, the base station switches to the uplink corresponding to the target beam. Receive beam. Therefore, beam alignment between the terminal and the base station can be implemented through the foregoing steps. It should be noted that the meaning of the base station switching to the beam is that the base station will use the beam when it needs to perform data transmission with the terminal in the future, instead of the base station continuously using the beam for transmission. For example, the target beam is a target downlink transmission beam, and the meaning of the base station switching to the target downlink transmission beam is that the base station will use the target downlink transmission beam when transmitting data to the terminal in the future, and the base station switches to the target uplink reception beam. The meaning is In the future, the station will use the target uplink receiving beam to receive data when receiving the above terminal, instead of the base station continuously using the beam for receiving.

In addition, the foregoing switching may be that the beam before the handover is performed by the terminal to the target beam or the beam corresponding to the target beam. For example, if the previous terminal uses the first downlink receiving beam, the beam corresponding to the target beam can be understood as the second downlink receiving beam.

It should be noted that the embodiments of the present disclosure may be applied to any beamforming technology such as analog beamforming, digital-analog hybrid beamforming, and digital beamforming, which is not limited in this disclosure.

Optionally, the terminal, according to the identifier, switches to a beam corresponding to the target beam or the target beam, including:

After the first beam switching notification message is valid, the terminal switches to the beam corresponding to the target beam or the target beam according to the identifier.

In this embodiment, the terminal may switch the beam after the first beam switching notification message is valid, where the switching may be performed at or after the effective time. In addition, the base station switching beam may also be switched after the above-mentioned effective time.

Optionally, the effective time of the first beam switching notification message is that the terminal receives the receiving time of the first beam switching notification message plus a time interval, where the time interval is preset, or The time interval is determined by the time interval information carried in the first beam switching notification message.

In this embodiment, the foregoing time interval is preset. It can be understood that the time interval is fixed. For example, the terminal and the base station may pre-negotiate the time interval. Certainly, in some implementations, the terminal may perform the handover after receiving the first beam switching notification message by default, that is, the first beam switching notification message is determined to be valid, which is not limited in this disclosure.

Optionally, the first beam switching notification message includes time-frequency resource indication information, where the time-frequency resource indication information is used to indicate an effective time-frequency resource location of the target beam.

In this embodiment, an effective time-frequency resource location indicating the target beam in the beam switching notification message may be implemented. The effective time-frequency resource location of the target beam can be understood as the time-frequency resource location of the beam that the terminal uses or uses the beam corresponding to the target beam. For example, if the target beam is a downlink transmit beam, the effective time-frequency resource location may be a base station. The time-frequency resource location of the downlink transmit beam is used, and the time-frequency resource location of the downlink receive beam corresponding to the downlink transmit beam is used by the terminal.

Optionally, in this implementation manner, if the target beam is multiple beams, the time-frequency resource indication information is used to indicate an effective time-frequency resource location of each of the multiple beams; or

In this embodiment, when the target beam is multiple, the effective time-frequency position of each beam may be indicated. For example, the target beam is multiple downlink transmit beams, such as T downlink transmit beams, and the base station may follow a certain The rule uses T beams on different time-frequency resources. For example, T beams are used in T subframes (or OFDM symbols, or other time units), one beam is transmitted in each subframe, and cycles are cycled in T subframes.

In addition, in this implementation manner, indicating that multiple beams are transmitted in the same subframe, and indicating effective frequency domain resource locations of each beam in the subframe, that is, different frequency domain resources in one subframe. It can also be transmitted with different beams.

In this implementation manner, the time-frequency resource indication information may also be indicated in a period of time, and the effective time-frequency resource location of the target beam may be circulated in the time. In addition, the time-frequency resource indication information may be a mapping relationship between a beam and a time-frequency resource, and the mapping relationship may be represented by a beam pattern, that is, the first beam switching notification message may include a beam pattern. To indicate the effective time-frequency resource location of the target beam.

Optionally, in the above multiple implementation manners, the target beam is a target downlink transmit beam, and the terminal switches to the beam corresponding to the target beam or the target beam according to the identifier, including:

The terminal switches to a downlink receiving beam corresponding to the target downlink transmission beam according to the identifier.

In this implementation manner, the base station may notify the terminal to switch to the downlink receiving beam corresponding to the target downlink transmission beam, where the downlink receiving beam corresponding to the target downlink transmitting beam may be predetermined by the terminal. In addition, in this embodiment, the target downlink transmission beam may be defined as a second downlink transmission beam, and the downlink transmission beam used by the base station to transmit data to the user terminal may be defined as a first downlink transmission beam. And the downlink receiving wave corresponding to the downlink transmission beam of the target The bundle may be defined as a second downlink receive beam, and the downlink receive beam previously used by the terminal may be defined as a first downlink receive beam.

Optionally, in this implementation manner, the method further includes:

Receiving, by the terminal, a plurality of downlink beam training signals sent by the base station, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the base station;

The terminal selects one or more downlink transmit beams of the multiple downlink transmit beams as the recommended downlink transmit beam by measuring the multiple downlink beam training signals;

Sending, by the terminal, the information about the recommended downlink transmission beam to the base station, so that the base station determines, according to information about the recommended downlink transmission beam, whether to change a downlink transmission beam for transmitting signals to the terminal.

In this embodiment, the training signal of the plurality of downlink transmission beams transmitted by the base station to the terminal is used to select the recommended downlink transmission beam and report the signal to the base station. The base station may determine whether to change the downlink transmission beam of the signal transmitted by the terminal by receiving the information about the recommended downlink transmission beam, and if the change may use the recommended downlink transmission beam as the target downlink transmission beam, or in the recommended downlink transmission beam. For example, in some scenarios, the target downlink transmission beam may further include other downlink transmission beams, which is not limited in this disclosure.

The recommended downlink transmission beam may be that the terminal selects one or more beams with the strongest received power of the training signal as the recommended beam.

In addition, the beam training signal of the downlink transmission beam may be sent by the base station after the beamforming weight corresponding to the downlink transmission beam, and the beam training signal may be sent periodically or periodically.

For example: base station shared

Candidate downlink transmit beams, each downlink beam corresponding to a set of beamforming weights, and the transmit beam shaping weight of the nth beam

Where K is the number of beam-formed antenna elements, which can be smaller than the number of antenna elements of the base station. The base station may transmit one beam training signal for each downlink transmit beam (the downlink transmit beams may be defined as candidate downlink transmit beams at this time). For example

Downlink transmit beams, the base station can send

Training signals. This

Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM) or Code Division Multiplexing (CDM), or various multiplexing methods The combination. For example, in an OFDM-based system,

Training signals can be occupied

OFDM symbols, each training signal occupies 1 OFDM symbol, and the training signals are TDM multiplexed. It is also possible to transmit training signals of multiple beams in one OFDM symbol, with FDM multiplexing or CDM multiplexing between them.

In addition, the terminal may send the information about the recommended downlink transmission beam to the base station, and may report the related information of the recommended downlink transmission beam to the base station. Relevant information includes an identifier identifying the downlink transmit beam, such as the number of the downlink transmit beam. In addition, the information of the recommended downlink transmission beam fed back by the terminal may be different according to the multiplexing manner of the downlink beam or the beam training signal. For example, the downlink beamforming signal is time-division multiplexed in different OFDM symbols or subframes, and the terminal measures and feeds back the selected downlink time information (OFDM symbol or subframe index). For example, the downlink beamforming signal is multiplexed in different frequency resources (PRB, subband), and the terminal measures and feeds back the selected downlink frequency information (PRB or subband index). In addition, the information about the recommended downlink transmit beam may further include downlink transmit beam training signal strength information received by the terminal, such as a received signal power level.

Optionally, in this implementation manner, the foregoing method further includes:

Determining, by the terminal, a downlink receiving beam corresponding to the recommended downlink transmitting beam, and storing a correspondence between the recommended downlink transmitting beam and a corresponding downlink receiving beam, or

The terminal determines a downlink receiving beam corresponding to the plurality of downlink transmitting beams from the plurality of downlink receiving beams of the terminal, and saves a correspondence between the multiple downlink transmitting beams and the corresponding downlink receiving beams.

The downlink receiving beam corresponding to the recommended downlink transmission beam may be the receiving beam with the strongest training signal receiving the recommended downlink transmission beam among the plurality of downlink receiving beams of the terminal as the receiving beam of the downlink transmitting beam. Similarly, the downlink receiving beam corresponding to the other downlink transmitting beams can receive the receiving beam with the strongest training signal of the downlink transmitting beam as the receiving beam of the downlink transmitting beam.

In addition, the corresponding relationship between the saved downlink transmit beam and the corresponding downlink receive beam may be that the downlink transmit beam and the corresponding downlink receive beam are in a plurality of downlink receive beams (which may be defined as all candidate downlink receive beams of the terminal) of the terminal. The weight of the number or downlink receive beamforming itself.

For example: the terminal has a total

Receive beams, each receive beam corresponding to a set of beamforming weights, and the receive beam shaping weight of the nth beam

Where L is the number of antenna elements of the beamforming, which may be smaller than the number of antenna elements of the terminal. For a downlink beam training signal (or other signal), the terminal may separately try to receive each of the received beams, and select the receiving beam with the strongest received signal power as the receiving beam of the downlink transmitting beam.

It should be noted that, in the embodiment of the present disclosure, the downlink receiving beam corresponding to the downlink transmitting beam may be determined by using other signals, and is not limited to being determined by using the beam training signal. For example, the terminal may determine according to other downlink data. The implementation of the present disclosure is not limited thereto.

Optionally, the foregoing method further includes:

Receiving, by the terminal, a second beam handover notification message sent by the base station, where the second beam handover notification message includes an identifier of a target uplink transmit beam to be switched, where the target uplink transmit beam is one or more beams ;

The terminal switches to the target uplink transmit beam.

In this implementation manner, the terminal may switch to the target uplink transmit beam by using the second beam switch notification message. The base station may switch to the target uplink receiving beam, and the base station may perform the handover before transmitting the second beam switching notification message. For example, the target uplink receiving beam is determined by the base station according to the target downlink transmitting beam. Or the base station may be configured to switch to the target uplink receive beam when the terminal switches to the target uplink transmit beam, where the target uplink receive beam corresponds to the target uplink transmit beam, where the correspondence may be understood as, for receiving the target uplink transmit beam. Uplink receive beam.

In addition, the target uplink transmit beam may define a second uplink transmit beam, and the uplink transmit beam used by the terminal may be defined as a first uplink transmit beam, and in the base station, the target uplink receive beam may define a second uplink receive beam (for one or A plurality of uplink receiving beams used by the base station to receive the uplink transmission of the terminal may be defined as a first uplink receiving beam.

Optionally, in this implementation manner, the terminal switches to the target uplink transmit beam, including:

After the second beam switching notification message is valid, the terminal switches to the target uplink transmission beam.

Optionally, the effective time of the second beam switching notification message is that the terminal receives the The receiving time of the second beam switching notification message is added to the time interval, where the time interval is preset, or the time interval is determined by the time interval information carried in the second beam switching notification message.

For the implementation of the effective time, refer to the description of the effective time of the first beam switching notification message introduced in the foregoing embodiment, and the description is not repeated here. In addition, the base station may switch to the uplink receiving beam corresponding to the target uplink transmitting beam after the effective time, but is not limited.

Optionally, in the foregoing implementation manner, the method further includes:

Transmitting, by the terminal, a plurality of uplink beam training signals to the base station, where the multiple uplink beam training signals are training signals of multiple uplink transmit beams of the terminal, so that the base station determines whether the terminal needs to be changed. Uplink transmit beam.

In this implementation manner, the terminal may send multiple uplink beam training signals to the base station, so that the base station determines whether to change the uplink transmit beam of the terminal according to the training signal of each uplink transmit beam. For example: the terminal has a total

Candidate uplink transmit beams, each uplink transmit beam corresponds to a set of beamforming weights, and the transmit beam shaping weight of the nth beam is

Where L is the number of beam-formed antenna elements, which can be less than the number of base terminal antenna elements. The terminal may transmit one beam training signal for each candidate uplink transmit beam. For example

Uplink transmit beam, the terminal can send

Training signals. This

The training signals can be multiplexed with TDM, FDM or CDM, or a combination of various multiplexing methods. For example, in an OFDM-based system,

Training signals can be occupied

OFDM symbols, each training signal occupies 1 OFDM symbol, and the training signals are TDM multiplexed. It is also possible to transmit training signals of multiple beams in one OFDM symbol, with FDM multiplexing or CDM multiplexing between them. In addition, the beam training signal of each beam is sent after the beamforming weight corresponding to the beam is shaped. And the uplink transmit beam training signal of the terminal is sent on the resource configured by the base station. The configured resources are periodic resources or acyclic resources.

In addition, after receiving the training signal from the base station to each uplink transmit beam, the terminal may select the best one or more uplink transmit beams as the priority uplink transmit beam (or the best uplink transmit beam) by measuring the beam training signal. For example, the base station may select the beam with the strongest received power of the training signal as the priority uplink transmit beam. The base station may determine that the target uplink transmit beam is the priority uplink transmit beam, or the target uplink transmit beam includes one or more of the priority uplink transmit beams. Of course, other uplink transmit beams can also be included. In addition, the base station may further determine an uplink receiving beam corresponding to the target uplink sending beam by receiving the multiple uplink beam training signals sent by the terminal. For example, the receiving beam of the base station may be selected from the candidate receiving beams. Base station

Where K is the number of beam-formed antenna elements, which can be smaller than the number of antenna elements of the base station. For an uplink beam training signal (or other signal), the base station may separately attempt to receive each of the received beams, and select the receiving beam with the strongest received signal power as the receiving beam of the uplink transmitting beam. For example, the base station determines the target uplink transmit beam by using the best uplink transmit beam, and determines the receive beam corresponding to the best uplink transmit beam as the target uplink receive beam to be switched.

In this implementation manner, the implementation may be implemented in combination with the implementation of the target downlink transmission beam, so that the foregoing method may implement, by using the first beam switching notification message, the downlink transmission beam (first downlink transmission beam) used by the base station by using the foregoing terminal. To the target downlink transmission beam (second downlink transmission beam), the terminal switches from the downlink reception beam (first downlink reception beam) used previously to the downlink reception beam (second downlink reception beam) corresponding to the target downlink transmission beam. The uplink beam training process is performed, and the second beam switching notification message is used to implement that the base station switches to the target uplink receiving beam (the second uplink receiving beam) by using the uplink receiving beam (the first uplink receiving beam) used by the terminal to receive the foregoing terminal transmission signal, and the terminal The previously transmitted uplink transmit beam (first uplink transmit beam) is switched to the target uplink transmit beam (second uplink transmit beam). For the specific timing relationship, refer to FIG. 3, and the base station uses the first uplink receiving beam to receive the uplink transmit beam training signal for example.

Certainly, in the embodiment of the present disclosure, the base station may further determine a target uplink receiving beam corresponding to the target uplink sending beam by receiving other signals sent by the terminal, for example, other uplink signals. The uplink signal of the receiving terminal may continue to use the first uplink receiving beam before the base station switches to the target uplink receiving beam.

In addition, the base station may determine the target uplink receiving beam before transmitting the second beam switching notification message or before receiving the uplink beam training signal, the target uplink receiving beam may be one or more beams, and may be defined as the second uplink receiving. Beam. And the base station may further receive, by using the second uplink receiving beam, the multiple uplink beam training signals sent by the terminal. For example, after the base station determines or switches to the target downlink transmit beam, the base station may be based on channel reciprocity or Corresponding relationship between the uplink receiving beam and the downlink transmitting beam of the base station, determining a second uplink receiving beam, where the second uplink receiving beam corresponds to the second downlink transmitting beam, that is, the second uplink receiving beam is the base station switching the downlink transmitting beam to the first The uplink receiving beam to be used by the uplink signal of the receiving terminal after the second downlink transmitting beam.

In addition, if the target downlink transmission beam (the second downlink transmission beam) is a plurality of beams, the base station may determine a target uplink reception beam (second uplink reception beam) corresponding to the target downlink reception beam by using one of the downlink transmission beams. For example, it is assumed that the antenna array of the base station is calibrated, that is, the downlink transmission and the uplink reception can use the same set of beamforming weights to generate a transmit beam or a receive beam pointing in the same direction, that is, the base station can transmit the beamforming right of the target downlink beam. The value is used to determine the target upstream receive beam. Or the base station downlink transmit beam and the uplink receive beam have a certain correspondence relationship, that is, for a terminal, after the downlink transmit beam to which the signal is transmitted is given, the target uplink receive beam can be determined by the corresponding relationship, and the uplink receive beam is determined by the uplink receive beam. The uplink signal, channel or data of the terminal can be reliably received.

Similarly, the implementation manner of determining an uplink receiving beam (second uplink receiving signal) before the base station sends the second beam switching notification message or before receiving the uplink beam training signal, by using the first beam switching notification message and the second beam switching notification The message may be that the base station is switched from the first downlink transmit beam to the second downlink transmit beam, the terminal is switched from the first downlink receive beam to the second downlink receive beam, and the base station is switched from the first uplink receive beam to the second uplink receive beam. The beam, the first uplink transmit beam on the terminal is switched to the second uplink transmit beam. And the base station uses the second uplink receiving beam to receive the uplink beam training signal sent by the terminal. For the specific timing relationship, refer to FIG. 4, where the time point of the uplink beam training may be any time point before the uplink beam switching message is sent after the second uplink receiving beam is determined.

Optionally, the target beam is a target uplink transmit beam, and the terminal switches to a beam corresponding to the target beam or the target beam according to the identifier, including:

The terminal switches to the target uplink transmit beam according to the identifier.

In this implementation manner, the terminal may switch to the target uplink transmit beam (the second uplink transmit beam) by using the first beam switch notification message, and the base station may also switch to the uplink receive beam corresponding to the target uplink transmit beam (the second uplink receive beam). For an implementation manner in which the target beam is the target uplink transmit beam, refer to the implementation manner in which the target beam is the target downlink transmit beam, which is not used herein. Said. In addition, as shown in the foregoing, the implementation of the method of switching the downlink transmission beam and then switching the uplink transmission beam is as follows. In this implementation manner, the uplink transmission beam is switched first and then the downlink transmission beam is switched, and details are not described herein again.

It should be noted that the various optional embodiments provided in this embodiment may be implemented in combination with each other, or may be implemented separately, and the embodiments of the present disclosure are not limited thereto.

In the embodiment of the present disclosure, the terminal receives the first beam switching notification message sent by the base station, where the first beam switching notification message includes an identifier of the target beam to be switched to; the terminal switches to the target beam according to the identifier. Corresponding beam or the target beam. In this way, the terminal switches the beam according to the handover notification message sent by the base station to implement beam alignment between the base station and the terminal.

Referring to FIG. 5, an embodiment of the present disclosure provides another beam management method, as shown in FIG. 5, including the following steps:

501. The base station receives, by the terminal, a first beam switch notification message, where the first beam switch notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams.

501. The base station switches to the target beam or a beam corresponding to the target beam.

It should be noted that, in the embodiment of the present disclosure, the order of execution of step 501 and step 502 is not limited.

Optionally, the base station switches to the target beam or the beam corresponding to the target beam, including:

After the first beam switching notification message is valid, the base station switches to the target beam or the beam corresponding to the target beam.

Optionally, if the target beam is multiple beams, the time-frequency resource indication information is used to indicate an effective time-frequency resource location of each of the multiple beams; or

Optionally, the target beam is a target downlink transmit beam, and the base station switches to the target beam or the beam corresponding to the target beam, including:

The base station switches to a target downlink transmit beam.

Optionally, the method further includes:

The base station sends a plurality of downlink beam training signals to the terminal, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the base station;

The base station receives the information about the recommended downlink transmission beam sent by the terminal, where the recommended downlink transmission beam is used by the terminal to measure the multiple downlink beam training signals in the multiple downlink transmission beams. One or more downlink transmit beams selected;

Determining, by the base station, whether a downlink transmission beam for transmitting signals to the terminal needs to be changed according to the information about the recommended downlink transmission beam.

Optionally, the method further includes:

The base station sends a second beam switch notification message to the terminal, where the second beam switch notification message includes an identifier of a target uplink transmit beam to be switched, and the target uplink transmit beam is one or more beams;

The base station switches to a target uplink receive beam.

It should be noted that, in the embodiment of the present disclosure, the sequence of sending the first beam switching notification message and the sending the second beam switching notification message is not limited. For example, in some embodiments, the first beam switching notification may be sent first. The message is sent, and then the second beam switch notification message is sent. In other embodiments, the second beam switch notification message may be sent first, and then the first beam switch notification message is sent, which is not limited in this disclosure.

Optionally, the base station switches to the target uplink receiving beam, including:

The base station switches to the target uplink receiving beam before transmitting the second beam switching notification message; or

After the second beam switching notification message is valid, the base station switches to the target uplink receiving beam, where the target uplink transmitting beam corresponds to the target uplink receiving beam.

Optionally, the method further includes:

Receiving, by the base station, an uplink beam training signal sent by the terminal;

The base station determines the target uplink transmit beam according to the uplink beam training signal.

For example, the base station receives a plurality of uplink beam training signals sent by the terminal, and the plurality of uplink beam training signals are training signals of multiple uplink transmit beams of the terminal;

The base station selects one or more uplink transmit beams of the multiple uplink transmit beams as a priority uplink transmit beam by measuring the multiple uplink beam training signals;

Determining, by the base station, whether an uplink transmit beam of the terminal needs to be changed, if yes, the target uplink transmit beam is the priority uplink transmit beam, or the target uplink transmit beam includes one of the priority uplink transmit beams Or multiple.

Optionally, the method further includes:

Determining, by the base station, the target uplink receiving beam according to the target downlink transmitting beam;

Receiving, by the base station, an uplink beam training signal sent by the terminal, where

The base station uses the target uplink receiving beam to receive an uplink beam training signal sent by the terminal.

In this implementation, the implementation may be implemented by combining the target beam as a target downlink transmit beam, and the base station may determine the target uplink receive beam before sending the second beam switch notification message or before receiving the uplink beam training signal. The second uplink receiving beam is configured, and the target uplink receiving beam may be determined by the correspondence between the target downlink transmitting beam (the second downlink transmitting beam) and the target uplink receiving beam, or the target uplink may be determined according to the beamforming weight of the target downlink transmitting beam. For details, refer to the related description in the embodiment shown in FIG. 2, and details are not described herein. Of course, in this embodiment, if the implementation is not implemented by combining the target beam as the target downlink transmission beam, in the embodiment, the target downlink transmission beam may be the base station before determining the target uplink reception beam. The downlink transmit beam used by the UE to transmit data.

Optionally, the method further includes:

Determining, by the base station, the target uplink receiving beam corresponding to the target uplink sending beam by receiving the uplink beam training signal sent by the terminal; or

The base station determines the target uplink receiving beam corresponding to the target uplink sending beam by receiving an uplink signal sent by the terminal.

Optionally, the target beam is a target uplink transmit beam, and the base station switches to the target beam or the beam corresponding to the target beam, including:

The base station switches to an uplink receiving beam corresponding to the target uplink transmitting beam.

It should be noted that the present embodiment is an implementation manner of a base station corresponding to the embodiment shown in FIG. 2. For a specific implementation manner, refer to the related description of the embodiment shown in FIG. The examples will not be described again. In this embodiment, beam alignment between the base station and the terminal can also be implemented.

The following describes an embodiment introduced in the above embodiment by way of an example:

Step 1. The base station sends a downlink beam training signal.

The beam training signal of each beam is formed by shaping a beam shaping weight corresponding to the beam. The beam training signal is sent periodically or aperiodically.

Step 2: The terminal receives the downlink beam training signal sent by the base station, and selects a recommended downlink transmission beam by measuring the beam training signal. For example, the terminal may select the beam with the strongest received power of the training signal as the recommended beam. The recommended beam is one beam or multiple beams.

For each recommended downlink transmit beam, the terminal determines a corresponding receive beam (it may also be a corresponding receive beam for all downlink transmit beams, not limited to the recommended beam). The receive beam of the terminal may be selected from candidate receive beams.

Step 3: The terminal reports the information about the recommended downlink transmit beam to the base station. The relevant information includes the identifier of the recommended downlink transmit beam, such as the number of the downlink transmit beam. The downlink transmit beam training signal strength information received by the terminal, such as the received signal power level, and the like, may further be included.

The terminal saves the downlink receiving beam corresponding to the recommended downlink transmitting beam. The terminal needs to save the correspondence between the recommended downlink transmit beam and the downlink receive beam. Optionally, the terminal saves the downlink receiving beams corresponding to all the downlink sending candidate beams, and saves the corresponding relationship. Here, the downlink receiving beam may refer to its number in all candidate downlink receiving beams, or may refer to downlink receiving beamforming. The weight itself.

Step 4: The base station receives downlink transmission beam related information reported by the terminal, and determines whether to change a downlink transmission beam to the terminal transmission signal. If it is determined that a change is needed, the base station transmits a downlink transmit beam switching notification message to the terminal. The message includes an identifier of a target beam to which the downlink transmission is to be switched (the second downlink transmission beam, and the beam before the handover is the first downlink transmission beam). The effective time of the message is the time + time interval of receiving the message, the time interval is fixed, or the time interval information is carried in the message. Alternatively, the beam switching notification message may further include indication information of the effective time-frequency resource, that is, a time-frequency resource location indicating that the terminal will apply the target beam (second downlink beam), for example, indicating which subframes the terminal is in (which PRB/ The target beam is applied in the subband.

Step 5: After the downlink transmit beam switch notification message takes effect, the base station switches the downlink transmit beam to the second downlink transmit beam.

Step 6: After the downlink transmit beam switch notification message is valid, the terminal switches the downlink receive beam to the downlink receive beam corresponding to the second downlink transmit beam (the terminal saves in step 2), that is, the second downlink receive beam.

Step 7. The terminal sends an uplink transmit beam training signal.

The beam training signal of each beam is shaped by the beamforming weight corresponding to the beam. The uplink transmit beam training signal of the terminal is sent on the resources configured by the base station. The configured resources are periodic resources or acyclic resources.

Step 8: The base station receives the uplink beam training signal sent by the terminal, and selects an optimal uplink transmission beam for the terminal by measuring the beam training signal. For example, the base station may select the beam with the strongest received power of the training signal as the best beam.

a) The base station uses the second uplink receive beam when receiving the uplink beam training signal transmitted by the terminal.

b) The base station determines the best received beam corresponding to the uplink transmit beam by receiving the uplink beam training signal (or other signal) sent by the terminal. The base station uses the receive beam corresponding to the best uplink transmit beam as the second uplink receive beam.

It should be noted that 8b is replaceable. For example, the base station determines the second uplink receiving beam, the second uplink receiving beam, and the second downlink according to the channel reciprocity or the correspondence between the uplink receiving beam and the downlink transmitting beam of the base station. Corresponding to the transmit beam, that is, the second uplink receive beam is the uplink to be used by the uplink signal of the receiving terminal after the base station switches the downlink transmit beam to the second downlink transmit beam. Receive beam.

In the figure, the base station uses the new uplink receiving beam (second uplink receiving beam) to receive the uplink beam training signal for example.

Step 9: The base station determines whether the terminal needs to change the uplink sending beam, and if it needs to change, sends an uplink sending beam switching notification message to the terminal. The message includes an identifier of the target beam to which the uplink transmission is to be switched (the second uplink transmission beam, and the beam before the handover is the first uplink transmission beam). The effective time of the message is the time + time interval of receiving the message, the time interval is fixed, or the time interval information is carried in the message.

Step 10: After receiving the uplink transmit beam switching notification message, the terminal switches the beam sent by the uplink signal to the second uplink transmit beam after the effective time.

Step 11: After transmitting the uplink transmit beam switching notification message, the base station switches the uplink receiving beam of the receiving terminal signal to the second uplink receiving beam after the effective time.

The process from step 4 to step 11 can be as shown in FIG. 6.

Referring to FIG. 7, a structure of a terminal is shown, and the terminal 700 includes the following modules:

The first receiving module 701 is configured to receive a first beam switching notification message sent by the base station, where the first beam switching notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams;

The first switching module 702 is configured to switch to a beam corresponding to the target beam or the target beam according to the identifier.

Optionally, the first switching module 702 is configured to switch to a beam corresponding to the target beam or the target beam according to the identifier after the first beam switching notification message is valid.

Optionally, the target beam is a target downlink transmit beam, and the first switching module is configured to switch to a downlink receive beam corresponding to the target downlink transmit beam according to the identifier.

Optionally, as shown in FIG. 8, the terminal further includes:

The second receiving module 703 is configured to receive, by the base station, a plurality of downlink beam training signals, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the base station;

The selecting module 704 is configured to select one or more downlink transmit beams of the multiple downlink transmit beams as the recommended downlink transmit beam by using the measurement of the multiple downlink beam training signals;

The first sending module 705 is configured to send, to the base station, information about the recommended downlink transmit beam, so that the base station determines, according to information about the recommended downlink transmit beam, whether to change a downlink transmit beam that is used to transmit a signal to the terminal.

Optionally, in this implementation manner, as shown in FIG. 9, the terminal further includes:

The first determining module 706 is configured to determine, according to the downlink receiving beams of the terminal, a downlink receiving beam corresponding to the recommended downlink transmitting beam, and save a correspondence between the recommended downlink transmitting beam and a corresponding downlink receiving beam. ;or

The second determining module 707 is configured to determine a downlink receiving beam corresponding to the multiple downlink transmitting beams from the plurality of downlink receiving beams of the terminal, and save a correspondence between the multiple downlink transmitting beams and corresponding downlink receiving beams. .

Optionally, as shown in FIG. 10, the terminal further includes:

The third receiving module 708 is configured to receive a second beam switching notification message sent by the base station, where the second beam switching notification message includes an identifier of a target uplink sending beam to be switched, where the target uplink sending beam is One or more beams;

The second switching module 709 is configured to switch to the target uplink transmit beam.

Optionally, the second switching module 709 is configured to switch to the target uplink transmit beam after the second beam switch notification message is valid.

Optionally, the effective time of the second beam switching notification message is that the terminal receives the time of receiving the second beam switching notification message plus a time interval, where the time interval is preset, or the time The interval is determined by the time interval information carried in the second beam switching notification message. set.

Optionally, in the foregoing implementation manner, as shown in FIG. 11, the terminal further includes:

The second sending module 7010 is configured to send, to the base station, multiple uplink beam training signals, where the multiple uplink beam training signals are training signals of multiple uplink transmit beams of the terminal, so that the base station determines whether it is needed. The uplink transmit beam of the terminal is changed.

Optionally, the target beam is a target uplink transmit beam, and the first switching module is configured to switch to the target uplink transmit beam according to the identifier.

It should be noted that, in the embodiment, the foregoing terminal 700 may be a terminal in any embodiment of the method embodiment in the embodiments of the present disclosure, and any implementation manner of the terminal in the method embodiment in the embodiment of the present disclosure may be implemented by the present embodiment. The foregoing terminal 700 in the example is implemented, and achieves the same beneficial effects, and details are not described herein again.

Referring to FIG. 12, a structure of a base station is shown. As shown in FIG. 12, the base station 1200 includes the following modules:

The first sending module 1201 is configured to receive, by the terminal, a first beam switching notification message, where the first beam switching notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams;

The first switching module 1202 is configured to switch to the target beam or a beam corresponding to the target beam.

Optionally, the first switching module 1202 is configured to switch to the target beam or the beam corresponding to the target beam after the first beam switching notification message is valid.

Optionally, the target beam is a target downlink transmit beam, and the first switching module is configured to switch to a target downlink transmit beam.

Optionally, as shown in FIG. 13, the base station further includes:

The second sending module 1203 is configured to send, to the terminal, a plurality of downlink beam training signals, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the base station;

The first receiving module 1204 is configured to receive information about a recommended downlink transmit beam sent by the terminal, where the recommended downlink transmit beam is measured by the terminal by using the training signal of the multiple downlink beams. One or more downlink transmission beams selected from the downlink transmission beams;

The first determining module 1205 is configured to determine, according to the information about the recommended downlink transmit beam, whether a downlink transmit beam for transmitting signals to the terminal needs to be changed.

Optionally, as shown in FIG. 14, the base station further includes:

The second sending module 1206 is configured to send a second beam switching notification message to the terminal, where the second beam switching notification message includes an identifier of a target uplink sending beam to be switched, and the target uplink sending beam is a Or multiple beams;

The second switching module 1207 is configured to switch to the target uplink receiving beam.

Optionally, the second switching module 1207 is configured to switch to a target uplink receiving beam before sending the second beam switching notification message; or

Optionally, the effective time of the second beam switching notification message is that the terminal receives the time of receiving the second beam switching notification message plus a time interval, where the time interval is preset, or the time The interval is determined by the time interval information carried in the second beam switching notification message.

Optionally, as shown in FIG. 15, the base station further includes:

The second receiving module 1208 is configured to receive an uplink beam training signal sent by the terminal.

The second determining module 1209 is configured to determine the target uplink transmit beam according to the uplink beam training signal.

Optionally, as shown in FIG. 16, the base station further includes

a third determining module 12010, configured to determine, according to the target downlink transmit beam, the target uplink receive beam;

The second receiving module 1208 is configured to receive an uplink beam training signal sent by the terminal by using the target uplink receiving beam.

Optionally, as shown in FIG. 17, the base station further includes:

a fourth determining module 12011, configured to determine, by receiving the uplink beam training signal sent by the terminal, the target uplink receiving beam corresponding to the target uplink sending beam; or

The fifth determining module 12012 is configured to determine, by receiving the uplink signal sent by the terminal, the target uplink receiving beam corresponding to the target uplink sending beam.

Optionally, the target beam is a target uplink transmit beam, and the first switching module is configured to switch to an uplink receive beam corresponding to the target uplink transmit beam.

It should be noted that, in the embodiment, the foregoing base station 1200 may be a base station in any of the method embodiments in the embodiments of the present disclosure, and any implementation manner of the base station in the method embodiment in this disclosure may be implemented by this embodiment. The base station 1200 in the example is implemented, and achieves the same beneficial effects, and details are not described herein again.

Referring to FIG. 18, there is shown a structure of a terminal including: a processor 1800, a transceiver 1810, a memory 1820, a user interface 1830, and a bus interface, wherein:

The processor 1800 is configured to read a program in the memory 1820 and perform the following processes:

Receiving, by the transceiver 1810, a first beam switching notification message sent by the base station, where the first beam switching notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams;

The transceiver 1810 is configured to receive and transmit data under the control of the processor 1800.

In FIG. 18, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1800 and various circuits of memory represented by memory 1820. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. The transceiver 1810 can be a plurality of components, ie, a package A transmitter and a receiver are provided to provide means for communicating with various other devices on a transmission medium. For different user equipments, the user interface 1830 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1800 is responsible for managing the bus architecture and general processing, and the memory 1820 can store data used by the processor 1800 in performing operations.

Optionally, the switching to the beam corresponding to the target beam or the target beam according to the identifier includes:

Optionally, the target beam is a target downlink transmit beam, and the switching to the target beam or the target beam according to the identifier includes:

And switching to a downlink receiving beam corresponding to the target downlink sending beam according to the identifier.

Optionally, the processor 1800 is further configured to:

Receiving, by the transceiver 1810, a plurality of downlink beam training signals sent by the base station, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the base station;

Selecting one or more downlink transmission beams of the multiple downlink transmission beams as the recommended downlink transmission beam by measuring the plurality of downlink beam training signals;

Transmitting, by the transceiver 1810, the information about the recommended downlink transmission beam to the base station, so that the base station determines, according to information about the recommended downlink transmission beam, whether to change a signal to the terminal. Downlink transmit beam.

Optionally, the processor 1800 is further configured to:

Determining, by the downlink receiving beams of the terminal, a downlink receiving beam corresponding to the recommended downlink transmitting beam, and storing a correspondence between the recommended downlink transmitting beam and a corresponding downlink receiving beam; or

A downlink receiving beam corresponding to the plurality of downlink transmitting beams is determined from the plurality of downlink receiving beams of the terminal, and a correspondence between the plurality of downlink transmitting beams and corresponding downlink receiving beams is saved.

Optionally, the processor 1800 is further configured to:

Receiving, by the transceiver 1810, a second beam switching notification message sent by the base station, where the second beam switching notification message includes an identifier of a target uplink sending beam to be switched, and the target uplink sending beam is one or more Beam

Switching to the target upstream transmit beam.

Optionally, the switching to the target uplink transmit beam includes:

Optionally, the processor 1800 is further configured to:

Sending, by the transceiver 1810, a plurality of uplink beam training signals to the base station, where the multiple uplink beam training signals are training signals of multiple uplink transmit beams of the terminal, so that the base station determines whether the terminal needs to be changed. Uplink transmit beam.

Optionally, the target beam is a target uplink transmit beam, and the identifier of the terminal is switched to a beam corresponding to the target beam or the target beam, including:

Switching to the target uplink transmit beam according to the identifier.

It should be noted that, in the embodiment, the foregoing terminal may be a terminal in any embodiment of the method embodiment in the embodiment of the present disclosure, and any implementation manner of the terminal in the method embodiment in the embodiment of the present disclosure may be used in this embodiment. In the above-mentioned terminal, and achieve the same beneficial effects, I will not repeat them here.

Referring to FIG. 19, there is shown a structure of a base station including: a processor 1900, a transceiver 1910, a memory 1920, a user interface 1930, and a bus interface, wherein:

The processor 1900 is configured to read a program in the memory 1920 and perform the following processes:

Transmitting, by the transceiver 1910, a first beam switching notification message to the terminal, where the first beam switching notification message includes an identifier of a target beam to be switched, and the target beam is one or more beams;

Switching to the target beam or the beam corresponding to the target beam.

The transceiver 1910 is configured to receive and transmit data under the control of the processor 1900.

In FIG. 19, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1900 and various circuits of memory represented by memory 1920. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 1910 may be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium. For different user equipments, the user interface 1930 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1900 is responsible for managing the bus architecture and general processing, and the memory 1920 can store data used by the processor 1900 in performing operations.

Optionally, the switching to the target beam or the beam corresponding to the target beam includes:

After the first beam switching notification message is valid, the target beam or the beam corresponding to the target beam is switched.

Optionally, if the target beam is multiple beams, the time-frequency resource indication information is used to indicate An effective time-frequency resource location for each of the plurality of beams; or

Optionally, the target beam is a target downlink transmit beam, and the switching to the target beam or the beam corresponding to the target beam includes:

Switch to the target downstream transmit beam.

Optionally, the processor 1900 is further configured to:

Sending, by the transceiver 1910, a plurality of downlink beam training signals to the terminal, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the base station;

Receiving, by the transceiver 1910, the information about the recommended downlink transmission beam sent by the terminal, where the recommended downlink transmission beam is the measurement by the terminal by using the measurement of the multiple downlink beam training signals, in the multiple downlink transmission beams. One or more downlink transmit beams selected in the middle;

Determining, according to the information about the recommended downlink transmit beam, whether to change a downlink transmit beam for transmitting signals to the terminal.

Optionally, the processor 1900 is further configured to:

Sending, by the transceiver 1910, a second beam switch notification message to the terminal, where the second beam switch notification message includes an identifier of a target uplink transmit beam to be switched, and the target uplink transmit beam is one or more beams. ;

Switch to the target upstream receive beam.

Optionally, the switching to the target uplink receiving beam includes:

Switching to the target uplink receive beam before transmitting the second beam switch notification message; or

And after the second beam switching notification message is valid, switching to the target uplink receiving beam, where the target uplink sending beam corresponds to the target uplink receiving beam.

Optionally, the effective time of the second beam switching notification message is that the first device receives the receiving time of the second beam switching notification message plus a time interval, where the time interval is preset, or The time interval is determined by time interval information carried in the second beam switching notification message.

Optionally, the effective time of the first beam switching notification message is that the terminal receives the The receiving time of the first beam switching notification message is added to the time interval, wherein the time interval is preset, or the time interval is determined by the time interval information carried in the first beam switching notification message.

Optionally, the processor 1900 is further configured to:

Receiving, by the transceiver 1910, an uplink beam training signal sent by the terminal;

Determining the target uplink transmit beam according to the uplink beam training signal.

Optionally, the processor 1900 is further configured to:

Determining the target uplink receive beam according to the target downlink transmit beam;

Receiving the uplink beam training signal sent by the terminal, including:

And receiving, by using the target uplink receiving beam, an uplink beam training signal sent by the terminal.

Optionally, the processor 1900 is further configured to:

Determining, by the receiving the uplink beam training signal sent by the terminal, the target uplink receiving beam corresponding to the target uplink sending beam; or

And determining, by receiving the uplink signal sent by the terminal, the target uplink receiving beam corresponding to the target uplink sending beam.

Optionally, the target beam is a target uplink transmit beam, and the switching to the target beam or the beam corresponding to the target beam includes:

The switching to the uplink receiving beam corresponding to the target uplink sending beam.

It should be noted that, in the embodiment, the foregoing base station may be a base station in any of the method embodiments in the embodiments of the present disclosure, and any implementation manner of the base station in the method embodiment in this disclosure may be used in this embodiment. The above-mentioned base station is implemented, and the same beneficial effects are achieved, and details are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can 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.

In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may be physically included 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 hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The software functional unit described above is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform part of the steps of the method of transmitting and receiving described in various embodiments of the present disclosure. 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, and the program code can be stored. Medium.

The above is a preferred embodiment of the present disclosure, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present disclosure. Retouching should also be considered as protection of this disclosure.

Claims

A beam management method comprising:

Receiving, by the first device, a first beam switching notification message sent by the second device, where the first beam switching notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams;

The first device switches to a beam corresponding to the target beam or the target beam according to the identifier.
The method of claim 1, wherein the first device switches to a beam corresponding to the target beam or the target beam according to the identifier, including:

After the first beam switching notification message is valid, the first device switches to the beam corresponding to the target beam or the target beam according to the identifier.
The method according to claim 1 or 2, wherein the target beam is a target downlink transmission beam, and the first device switches to a beam corresponding to the target beam or the target beam according to the identifier, including:

The first device switches to a downlink receiving beam corresponding to the target downlink sending beam according to the identifier.
The method of claim 3 wherein the method further comprises:

Receiving, by the first device, a plurality of downlink beam training signals sent by the second device, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the second device;

The first device selects one or more downlink transmit beams of the multiple downlink transmit beams as the recommended downlink transmit beam by measuring the multiple downlink beam training signals;

The first device sends the information about the recommended downlink transmission beam to the second device, so that the second device determines, according to the information about the recommended downlink transmission beam, whether to change the downlink transmission of the signal transmitted by the first device. Beam.
The method of claim 4 wherein the method further comprises:

Determining, by the first device, a downlink receiving beam corresponding to the recommended downlink transmitting beam, and storing a correspondence between the recommended downlink transmitting beam and a corresponding downlink receiving beam, from the plurality of downlink receiving beams of the first device; Or

The first device determines a downlink receiving beam corresponding to the multiple downlink transmitting beams from the plurality of downlink receiving beams of the first device, and saves a correspondence between the multiple downlink transmitting beams and the corresponding downlink receiving beams.
The method of claim 1 or 2, wherein the method further comprises:

The first device receives a second beam switching notification message sent by the second device, where the second beam switching notification message includes an identifier of a target uplink sending beam to be switched, and the target uplink sending beam is one Or multiple beams;

The first device switches to the target uplink transmit beam.
The method of claim 6, wherein the switching of the first device to the target uplink transmit beam comprises:

After the second beam switching notification message is valid, the first device switches to the target uplink transmission beam.
The method of claim 7, wherein the effective time of the second beam switching notification message is that the first device receives the receiving time of the second beam switching notification message plus a time interval, wherein the time The interval is preset, or the time interval is determined by the time interval information carried in the second beam switching notification message.
The method of claim 6 wherein the method further comprises:

The first device sends a plurality of uplink beam training signals to the second device, where the multiple uplink beam training signals are training signals of multiple uplink transmit beams of the first device, so that the second device Determining whether it is necessary to change an uplink transmit beam of the first device.
The method of claim 1 or 2, wherein the target beam is a target uplink transmit beam, and the first device switches to a beam corresponding to the target beam or the target beam according to the identifier, including:

The first device switches to the target uplink transmit beam according to the identifier.
A beam management method comprising:

The second device sends a first beam switch notification message to the first device, where the first beam switch notification message includes an identifier of a target beam to be switched, and the target beam is one or more beams;

The second device switches to the target beam or a beam corresponding to the target beam.
The method of claim 11, wherein the switching of the second device to the target beam or the beam corresponding to the target beam comprises:

After the first beam switching notification message is valid, the second device switches to the target beam or the beam corresponding to the target beam.
The method of claim 11 or 12, wherein the target beam is a target downlink transmit beam, and the second device switches to the target beam or the beam corresponding to the target beam, including:

The second device switches to a target downlink transmit beam.
The method of claim 13 wherein the method further comprises:

The second device sends a plurality of downlink beam training signals to the first device, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the second device;

The second device receives the information about the recommended downlink transmission beam sent by the first device, where the recommended downlink transmission beam is the measurement by the first device by using the training signal of the multiple downlink beams. One or more selected downlink transmit beams of the plurality of downlink transmit beams;

The second device determines, according to the information about the recommended downlink transmit beam, whether to change a downlink transmit beam that transmits a signal to the first device.
The method of claim 11 or 12, wherein the method further comprises:

The second device sends a second beam switching notification message to the first device, where the second beam switching notification message includes an identifier of a target uplink sending beam to be switched, and the target uplink sending beam is one or Multiple beams;

The second device switches to a target uplink receive beam.
The method of claim 15, wherein the switching of the second device to the target uplink receive beam comprises:

The second device switches to the target uplink receiving beam before transmitting the second beam switching notification message; or

After the second beam switching notification message is valid, the second device switches to the target uplink receiving beam, where the target uplink transmitting beam corresponds to the target uplink receiving beam.
The method of claim 16, wherein the effective time of the second beam switching notification message is that the first device receives the receiving time of the second beam switching notification message plus time An interval, where the time interval is preset, or the time interval is determined by time interval information carried in the second beam switching notification message.
The method of claim 15 wherein the method further comprises:

Receiving, by the second device, an uplink beam training signal sent by the first device;

The second device determines the target uplink transmit beam according to the uplink beam training signal.
The method of claim 18, wherein the method further comprises:

Determining, by the second device, the target uplink receiving beam according to the target downlink transmission beam;

Receiving, by the second device, the uplink beam training signal sent by the first device, including:

The second device uses the target uplink receiving beam to receive an uplink beam training signal sent by the first device.
The method of claim 18, wherein the method further comprises:

The second device determines the target uplink receiving beam corresponding to the target uplink sending beam by receiving the uplink beam training signal sent by the first device; or

The second device determines the target uplink receiving beam corresponding to the target uplink sending beam by receiving an uplink signal sent by the first device.
The method of claim 11 or 12, wherein the target beam is a target uplink transmit beam, and the second device switches to the target beam or the beam corresponding to the target beam, including:

The second device switches to an uplink receiving beam corresponding to the target uplink sending beam.
A device, the device being a first device, comprising:

a first receiving module, configured to receive a first beam switching notification message sent by the second device, where the first beam switching notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams ;

And a first switching module, configured to switch to a beam corresponding to the target beam or the target beam according to the identifier.
The device according to claim 22, wherein the first switching module switches to a beam corresponding to the target beam or the target beam according to the identifier after the first beam switching notification message is valid.
The apparatus according to claim 22 or 23, wherein said target beam is a target downlink Transmitting a beam, the first switching module is configured to switch to a downlink receiving beam corresponding to the target downlink sending beam according to the identifier.
The device of claim 24, wherein the device further comprises:

a second receiving module, configured to receive a plurality of downlink beam training signals sent by the second device, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the second device;

a selection module, configured to select one or more downlink transmit beams of the multiple downlink transmit beams as the recommended downlink transmit beam by using the measurement of the multiple downlink beam training signals;

a first sending module, configured to send information about the recommended downlink transmit beam to the second device, to enable the second device to determine, according to information about the recommended downlink transmit beam, whether to change a signal for transmitting the first device Downstream transmit beam.
The device of claim 25, wherein the device further comprises:

a first determining module, configured to determine, from a plurality of downlink receiving beams of the first device, a downlink receiving beam corresponding to the recommended downlink transmitting beam, and save a correspondence between the recommended downlink transmitting beam and a corresponding downlink receiving beam Relationship; or

a second determining module, configured to determine a downlink receiving beam corresponding to the multiple downlink transmitting beams from the plurality of downlink receiving beams of the first device, and save a correspondence between the multiple downlink transmitting beams and corresponding downlink receiving beams relationship.
The device of claim 22 or 23, wherein the device further comprises:

a third receiving module, configured to receive a second beam switching notification message sent by the second device, where the second beam switching notification message includes an identifier of a target uplink sending beam to be switched, and the target uplink transmitting beam One or more beams;

And a second switching module, configured to switch to the target uplink transmit beam.
The device of claim 27, wherein the second switching module is configured to switch to the target uplink transmit beam after the second beam switch notification message is valid.
The device of claim 28, wherein the effective time of the second beam switching notification message is that the first device receives the receiving time of the second beam switching notification message plus a time interval, wherein the time The interval is preset, or the time interval is determined by the time interval information carried in the second beam switching notification message.
The device of claim 27, wherein the device further comprises:

a second sending module, configured to send, to the second device, a plurality of uplink beam training signals, where the multiple uplink beam training signals are training signals of multiple uplink transmit beams of the first device, so that the The second device determines whether it is necessary to change the uplink transmit beam of the first device.
The device according to claim 22 or 23, wherein the target beam is a target uplink transmit beam, and the first switching module is configured to switch to the target uplink transmit beam according to the identifier.
A device, the device being a second device, comprising:

a first sending module, configured to receive, by the first device, a first beam switching notification message, where the first beam switching notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams ;

The first switching module is configured to switch to the target beam or a beam corresponding to the target beam.
The device according to claim 32, wherein the first switching module is configured to switch to the target beam or the beam corresponding to the target beam after the first beam switching notification message is valid.
The device of claim 32 or 33, wherein the target beam is a target downlink transmit beam, and the first handover module is configured to switch to a target downlink transmit beam.
The device of claim 34, wherein the device further comprises:

a second sending module, configured to send, to the first device, a plurality of downlink beam training signals, where the multiple downlink beam training signals are training signals of multiple downlink transmit beams of the second device;

a first receiving module, configured to receive information about a recommended downlink transmit beam sent by the first device, where the recommended downlink transmit beam is a measurement by the first device by using the training signal of the multiple downlink beams One or more selected downlink transmission beams of the plurality of downlink transmission beams;

And a first determining module, configured to determine, according to the information about the recommended downlink transmit beam, whether to change a downlink transmit beam that transmits a signal to the first device.
The device of claim 32 or 33, wherein the device further comprises:

a second sending module, configured to send a second beam switching notification message to the first device, where the second beam switching notification message includes an identifier of a target uplink sending beam to be switched, where the target uplink sending beam is One or more beams;

The second switching module is configured to switch to the target uplink receiving beam.
The device of claim 36, wherein the second switching module is configured to switch to a target uplink receive beam before transmitting the second beam switch notification message; or

The second switching module is configured to switch to the target uplink receiving beam after the second beam switching notification message is valid, where the target uplink sending beam corresponds to the target uplink receiving beam.
The device of claim 37, wherein the effective time of the second beam switching notification message is that the first device receives the receiving time of the second beam switching notification message plus a time interval, wherein the time The interval is preset, or the time interval is determined by the time interval information carried in the second beam switching notification message.
The device of claim 36, wherein the device further comprises:

a second receiving module, configured to receive an uplink beam training signal sent by the first device;

And a second determining module, configured to determine the target uplink transmit beam according to the uplink beam training signal.
The device of claim 39, wherein the device further comprises:

a third determining module, configured to determine, according to the target downlink transmit beam, the target uplink receive beam;

The second receiving module is configured to receive an uplink beam training signal sent by the first device by using the target uplink receiving beam.
The device of claim 39, wherein the device further comprises:

a fourth determining module, configured to determine, by receiving the uplink beam training signal sent by the first device, the target uplink receiving beam corresponding to the target uplink sending beam; or

And a fifth determining module, configured to determine, by receiving the uplink signal sent by the first device, the target uplink receiving beam corresponding to the target uplink sending beam.
The device of claim 32 or 33, wherein the target beam is a target uplink transmit beam, and the first switching module is configured to switch to an uplink receive beam corresponding to the target uplink transmit beam.
A first device comprising:

Processor;

a memory coupled to the processor via a bus interface and configured to store programs and data used by the processor in performing operations;

a transceiver for communicating with various other devices on a transmission medium,

When the processor invokes and executes the program and data stored in the memory, the first device performs the following processing:

Receiving, by the second device, a first beam switching notification message, where the first beam switching notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams;

Switching to a beam corresponding to the target beam or the target beam according to the identifier.
A second device comprising:

Processor;

a memory coupled to the processor via a bus interface and configured to store programs and data used by the processor in performing operations;

a transceiver for communicating with various other devices on a transmission medium,

When the processor invokes and executes the program and data stored in the memory, the second device performs the following processing:

Receiving, by the first device, a first beam handover notification message, where the first beam handover notification message includes an identifier of a target beam to be switched, where the target beam is one or more beams;

Switching to the target beam or the beam corresponding to the target beam.