CN114430557A

CN114430557A - Beam management method and device

Info

Publication number: CN114430557A
Application number: CN202210013421.2A
Authority: CN
Inventors: 廖敏; 高帅; 王璐璐; 张忠皓; 李福昌
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2022-05-03
Anticipated expiration: 2042-01-06
Also published as: CN114430557B

Abstract

The invention provides a beam management method and a beam management device, relates to the technical field of communication, and is used for reducing beam interference in cross time slots between terminals and improving communication efficiency. The beam management method comprises the following steps: sending first indication information to a terminal; the first indication information comprises time domain position information at the time when the terminal generates the cross time slot interference; the first indication information is used for indicating the terminal to measure Reference Signal Received Power (RSRP) in a plurality of beam directions at the time indicated by the time domain position information; receiving a plurality of RSRPs which are sent by a terminal and correspond to a plurality of beam directions one by one; determining the beam direction of a downlink signal of the terminal according to the plurality of RSRPs; and sending second indication information for indicating the terminal to receive the downlink signal according to the beam direction to the terminal.

Description

Beam management method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for beam management.

Background

In order to improve the mitigation of the path loss of the electronic wave in the uhf band and increase the propagation distance of the electronic wave in the uhf band, a fifth Generation Mobile Communication Technology (5G) Communication system has gradually implemented a beamforming Technology in the terminal and the base station.

There are three different frame structures for beamforming techniques, DDDSU (Option 1): the frame structure mainly comprises the following behaviors, and is suitable for scenes with high downlink traffic flow and low uplink traffic flow requirement; DSUUU (Option 2): the frame structure mainly acts on the upper line, and is suitable for scenes mainly comprising video return and upload services; DDSUU (Option 3): the frame structure with balanced uplink and downlink throughput rate is suitable for the scenes with certain requirements on uplink and downlink service flow.

In order to meet the differentiated requirements of different terminals and increase the flexibility of millimeter waves in deployment, the current scheme provides a flexible frame structure adjustment method, that is, the ratio of the three different frame structures is adjusted according to a long-time service situation or an emergency situation. But there may be cross-intra-slot interference between terminals applying different frame structures.

For example, when the edge users of the two base stations use different frame structures and the position directions of the edge users of the two base stations are closer, the beam direction of the uplink signal of the left edge user and the beam direction of the downlink signal of the right edge user may be aligned, which is likely to generate strong interference.

Disclosure of Invention

The invention provides a beam management method and a beam management device, which are used for reducing beam interference in a cross time slot between terminals and improving communication efficiency.

In order to achieve the purpose, the technical scheme is as follows:

in a first aspect, a beam management method is provided, including:

sending first indication information to a terminal; the first indication information comprises time domain position information at the time when the terminal generates the cross time slot interference; the first indication information is used for indicating the terminal to measure Reference Signal Received Power (RSRP) in a plurality of beam directions at the time indicated by the time domain position information;

receiving a plurality of RSRPs which are sent by a terminal and correspond to a plurality of beam directions one by one;

determining the beam direction of a downlink signal of the terminal according to the plurality of RSRPs;

and sending second indication information for indicating the terminal to receive the downlink signal according to the beam direction to the terminal.

Optionally, the first indication information further includes: an RSRP threshold; the RSRP threshold is used for determining whether the terminal has beam interference in a cross time slot;

the RSRP comprises reference signal received power L1-RSRP of layer one and reference signal received power SRS-RSRP of the sounding reference signal; the time domain location information includes time domain location information of the measured SRS-RSRP.

Optionally, the plurality of RSRPs comprises a plurality of L1-RSRPs and a plurality of SRS-RSRPs;

determining a beam direction of a downlink signal of a terminal according to a plurality of RSRPs, comprising:

when the maximum SRS-RSRP in the SRS-RSRP is larger than the RSRP threshold, determining the beam direction corresponding to the maximum L1-RSRP in the set to be selected as the beam direction of the downlink signal of the terminal; the candidate set comprises: at least one L1-RSRP in one-to-one correspondence with at least one SRS-RSRP that is less than the RSRP threshold among the plurality of SRS-RSRPs.

Optionally, the beam management method further includes:

acquiring a first frame structure of a beam configured for a terminal and a second frame structure of a beam configured for an interfering terminal;

and determining time domain position information of the time when the terminal and the interference terminal generate the cross time slot interference according to the first frame structure and the second frame structure.

In a second aspect, a beam management apparatus is provided, including: a transmitting unit, a receiving unit and a processing unit;

a sending unit, configured to send first indication information to a terminal; the first indication information comprises time domain position information at the time when the terminal generates the cross time slot interference; the first indication information is used for indicating the terminal to measure Reference Signal Received Power (RSRP) in a plurality of beam directions at the time indicated by the time domain position information;

the receiving unit is used for receiving a plurality of RSRPs which are sent by the terminal and correspond to a plurality of beam directions one by one;

the processing unit is used for determining the beam direction of the downlink signal of the terminal according to the plurality of RSRPs;

and the sending unit is further used for sending second indication information for indicating the terminal to receive the downlink signal according to the beam direction to the terminal.

a processing unit, specifically configured to:

Optionally, the beam management apparatus further includes: an acquisition unit;

an acquisition unit configured to acquire a first frame structure of a beam configured for a terminal and a second frame structure of a beam configured for an interfering terminal;

and the processing unit is used for determining the time domain position information of the time when the terminal and the interference terminal generate the cross time slot interference according to the first frame structure and the second frame structure.

In a third aspect, a beam management apparatus is provided, which includes a memory and a processor; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; when the beam management apparatus is operating, the processor executes computer-executable instructions stored in the memory to cause the beam management apparatus to perform the beam management method of the first aspect.

The beam management apparatus may be a network device, or may be a part of an apparatus in the network device, for example, a system on chip in the network device. The system on chip is configured to support the network device to implement the functions involved in the first aspect and any one of its possible implementations, for example, to receive, determine, and shunt data and/or information involved in the beam management method. The chip system includes a chip and may also include other discrete devices or circuit structures.

In a fourth aspect, a computer-readable storage medium is provided, the computer-readable storage medium comprising computer-executable instructions that, when executed on a computer, cause the computer to perform the beam management method of the first aspect.

In a fifth aspect, there is also provided a computer program product comprising computer instructions which, when run on a beam management apparatus, cause the beam management apparatus to perform the beam management method as described in the first aspect above.

It should be noted that all or part of the above computer instructions may be stored on the first computer readable storage medium. The first computer readable storage medium may be packaged together with or separately from the processor of the beam management apparatus, which is not limited in this application.

For the descriptions of the second, third, fourth and fifth aspects in this application, reference may be made to the detailed description of the first aspect; in addition, for the beneficial effects of the second aspect, the third aspect, the fourth aspect and the fifth aspect, reference may be made to the beneficial effect analysis of the first aspect, and details are not repeated here.

In the present application, the names of the beam management apparatuses mentioned above do not limit the devices or functional modules themselves, and in actual implementation, the devices or functional modules may appear by other names. Insofar as the functions of the respective devices or functional modules are similar to those of the present application, they fall within the scope of the claims of the present application and their equivalents.

These and other aspects of the present application will be more readily apparent from the following description.

The technical scheme provided by the application at least brings the following beneficial effects:

the application provides a beam management method, which measures RSRP in a plurality of beam directions by indicating the time of a terminal at the time indicated by time domain position information, thereby determining the beam direction of a downlink signal of the terminal, enabling the downlink signal of the terminal to be transmitted at the maximum rate, reducing the influence of a sounding reference signal of an adjacent terminal on the downlink signal of the terminal, improving the interference condition between terminals applying different frame structures, and improving the network performance of lower beam forming.

Drawings

Fig. 1A is a schematic structural diagram of a beam pair provided in the present application;

fig. 1B is a schematic structural diagram of a communication system provided in the present application;

fig. 2A is a schematic diagram of a hardware structure of a communication device provided in the present application;

fig. 2B is a schematic diagram of another hardware structure of the communication device provided in the present application;

fig. 3 is a schematic flowchart of a beam management method provided in the present application;

fig. 4 is an exemplary diagram of a beam management method provided herein;

fig. 5 is a diagram of another example of a beam management method provided in the present application;

fig. 6 is a diagram of another example of a beam management method provided in the present application;

fig. 7 is a schematic structural diagram of a beam management apparatus provided in the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

For the convenience of clearly describing the technical solutions of the embodiments of the present application, in the embodiments of the present application, the terms "first" and "second" are used to distinguish the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the terms "first" and "second" are not used to limit the quantity and execution order.

To facilitate an understanding of the present application, the relevant elements referred to in the present application will now be described.

Beamforming in millimeter wave frequency band

Due to the antenna size and propagation condition limitations, the high band applies massive beamforming techniques to compensate for path propagation losses. And analog or hybrid (analog + digital) beamforming is the main technical approach for cost and power consumption considerations. A beam management mechanism is designed for the 5G base station, so that the base station and the terminal can align to transmit and receive beams, and the beam management mechanism comprises a beam measurement and reporting mechanism, a beam indication mechanism and the like.

After the base station selects one transmitting beam, the signal propagates along a specific direction, and the terminal needs to receive the signal by using a receiving beam corresponding to the transmitting beam of the base station, otherwise, the quality of the signal received by the terminal is reduced, and even a useful signal cannot be received. Therefore, there is a certain correspondence between the transmit beam and the receive beam, which we refer to as a beam pair. As shown in fig. 1A, the beam t6 of the base station and the r2 beam of user 2 are a beam pair. The beam t4 of the base station and the r3 beam of user 1 are a beam pair.

To achieve alignment of the transmit and receive beam pairs, the base station transmits Reference signals (e.g., Channel State Information-Reference Signal (CSI-RS)) in a beam scanning manner. If a base station is capable of transmitting M analog beams, each beam may be configured with a reference signal for beam measurement, and each reference signal is shaped with the corresponding analog beam. The M reference signals are transmitted on different time or frequency domain resources so that the base station can adjust the configuration of the phase shifter for each beam direction to implement analog beamforming.

Millimeter wave beam management

In the millimeter wave communication process, beam scanning and beam tracking are key technologies and bases of millimeter waves, and downlink beam tracking mainly depends on synchronous broadcast control channel (SSB) beam scanning (initial access state) and CSI-RS reference signal beam scanning (service connection state). The beam management specifically includes beam scanning, beam measurement, beam identification, beam reporting, beam failure recovery, and the like.

Beam scanning

Beam scanning refers to transmitting and/or receiving a beam in a predetermined manner in a specific period or time period to cover a specific spatial region. In order to increase the beamforming gain, a high-gain directional antenna is generally used to form a narrow beam width, which tends to cause a problem of insufficient coverage. To avoid this problem, multiple narrow beams may be used in the time domain to scan within the coverage area to meet the coverage requirements within the area. With the beam scanning technique, beams are transmitted in a predefined direction with a fixed period.

Beam measurement

Beam measurement refers to the process of measuring the quality and characteristics of the received shaped signal by a base station or a terminal. In the beam management process, the terminal or the base station identifies the best beam through correlation measurement. In the downlink direction, 3GPP defines a layer-one Reference Signal received Power (L1-Reference Signal Receiving Power, L1-RSRP) based beam measurement reporting procedure to support beam selection and reselection, which may be based on SSB or CSI-RS allocated to the terminal. The rapid beam information measurement and reporting can be carried out through the L1-RSRP, and the measurement is carried out based on the L1 without a filtering process of the L3. The traditional L3 RSRP is reported by a high layer, and the L1 RSRP in 5G is reported directly at a physical layer, so that the reliability and the channel capacity are important.

Beam determination

The base station or the terminal selects the Tx/Rx beam it uses. The downlink beam is determined by the terminal with the decision criterion that the maximum received signal strength of the beam should be greater than a certain threshold. In the uplink direction, the mobile terminal transmits Sounding Reference Signals (SRS) according to the direction of the base station, and the base station measures the SRS to determine the best uplink beam. If the base station side can determine the uplink reception beam according to the downlink beam measurement result of the terminal or the base station side can determine the downlink transmission beam according to the measurement result of the uplink reception beam, the base station side may consider the Tx/Rx beams to be identical. Also, if the terminal side can determine an uplink transmission beam according to the downlink beam measurement result of the terminal or the terminal can determine a downlink reception beam of the terminal according to the uplink beam measurement result of the terminal and the base station supports the characteristic indication information related to beam uniformity of the terminal, the terminal side may consider the Tx/Rx beams to be uniform.

Beam reporting

After determining the best beam, the terminal or the base station notifies the opposite terminal of the selected beam information. In addition, the base station and the terminal side also need to perform related operations such as beam failure recovery. With multi-beam operation, beam failures can easily cause link outages between the network and the terminals due to the relatively narrow beam width. When the channel quality of the terminal is poor, the bottom layer will send a beam failure notification. The terminal will indicate a new SS block or CSI-RS and perform beam recovery through a new RACH procedure. The base station will transmit downlink setup or UL grant information on the PDCCH to end the beam recovery procedure.

Flexible frame structure of millimeter wave frequency band

In order to meet differentiated industry requirements, particularly for monitoring, acquisition and broadcasting, medical and other video return services with clear uplink requirements, improve the technical advantages of millimeter waves in uplink, and increase the flexibility of millimeter waves in deployment, the embodiment of the application can utilize a matching scheme based on uplink enhancement except a conventional millimeter wave frame structure (downlink).

Millimeter wave common frame structure

DDDSU (Option 1): the frame structure mainly comprises the following behaviors, is suitable for scenes with high downlink traffic flow and low uplink traffic flow requirement, has large downlink occupation ratio, can cover by using more beams, and has good downlink coverage.

DSUUU (Option 2): the frame structure mainly based on the uplink action is suitable for scenes mainly based on video return and upload services, and has more resources required for uplink processing of the base station and higher implementation difficulty. The downlink ratio is small, the SSB can place limited beams, and the coverage is relatively small.

DDSUU (Option 3): the frame structure with balanced uplink and downlink throughput rates is suitable for scenes with certain requirements on uplink and downlink service flow.

For the 3 millimeter wave common frame structures, prediction adjustment can be performed according to long-time service conditions of a coverage area, and rapid adjustment of uplink and downlink frame structures can also be performed according to sudden conditions applied in the 5G industry. The millimeter wave common frame structure can effectively meet the sudden demand of a concert, a stadium and the like on the uplink bandwidth.

Inter-terminal interference of crossing time slots

As shown in fig. 1B, beam interference in a cross time slot exists between terminals (User Equipment, UE) applying different frame structures (UtoD: uplink transmission of adjacent UE interferes with downlink reception of adjacent UE). A typical scenario is that when edge users of two base stations are located close to each other, strong UtoD interference is generated when the transmit/receive beams of the two users are aligned.

It can be known from the above that, when the edge users of the two base stations use different frame structures and the position directions of the edge users of the two base stations are closer, the beam direction of the uplink signal of the left edge user and the beam direction of the downlink signal of the right edge user may be aligned, and strong interference is easily generated.

In view of the above problems, embodiments of the present application provide a beam management method, where a terminal is indicated at a time indicated by time domain location information, and RSRP in multiple beam directions is measured, so as to determine a beam direction of a downlink signal of the terminal, so that the downlink signal of the terminal can be transmitted at a maximum rate, the influence of sounding reference signals of neighboring terminals on the downlink signal of the terminal is reduced, the interference between terminals using different frame structures is improved, and the network performance of lower beam forming is improved.

The beam management method is suitable for a communication system. Fig. 1B shows a structure of the communication system. As shown in fig. 1B, the communication system includes: interfering terminal, interfered terminal, interfering base station and interfered base station.

The interfering and interfered terminals in fig. 1B may refer to devices that provide voice and/or data connectivity to users, handheld devices with wireless connection capability, or other processing devices connected to wireless modems. A wireless terminal may communicate with one or more core networks via a Radio Access Network (RAN). The wireless terminals may be mobile terminals such as mobile phones (or "cellular" phones) and computers with mobile terminals, as well as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices that exchange language and/or data with a wireless access network, such as cell phones, tablets, laptops, netbooks, Personal Digital Assistants (PDAs).

The interfering base station and the interfered base station in fig. 1B may be base stations or base station controllers of wireless communication, etc. In this embodiment, the base station may be a base station (BTS) in a global system for mobile communication (GSM), Code Division Multiple Access (CDMA), a base station (node B) in a Wideband Code Division Multiple Access (WCDMA), a base station (eNB) in an internet of things (IoT) or a narrowband internet of things (NB-IoT), a base station in a future 5G mobile communication network or a future evolved Public Land Mobile Network (PLMN), which is not limited in this embodiment.

The basic hardware structures of the interfering terminal, the interfered terminal, the interfering base station and the interfered base station in the communication system are similar, and all include the elements included in the communication device shown in fig. 2A or fig. 2B. The following describes hardware configurations of a terminal, an interfering base station, and an interfered base station, by taking the communication apparatus shown in fig. 2A and 2B as an example.

Fig. 2A is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present disclosure. The communication device comprises a processor 21, a memory 22, a communication interface 23, a bus 24. The processor 21, the memory 22 and the communication interface 23 may be connected by a bus 24.

The processor 21 is a control center of the communication apparatus, and may be a single processor or a collective term for a plurality of processing elements. For example, the processor 21 may be a Central Processing Unit (CPU), other general-purpose processors, or the like. Wherein a general purpose processor may be a microprocessor or any conventional processor or the like.

For one embodiment, processor 21 may include one or more CPUs, such as CPU 0 and CPU 1 shown in FIG. 2A.

The memory 22 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

In a possible implementation, the memory 22 may exist separately from the processor 21, and the memory 22 may be connected to the processor 21 via a bus 24 for storing instructions or program codes. The beam management method provided by the following embodiments of the present invention can be implemented when the processor 21 invokes and executes instructions or program codes stored in the memory 22.

In the embodiment of the present application, the software programs stored in the memory 22 are different for the terminal, the interfering base station, and the interfered base station, so that the functions implemented by the terminal, the interfering base station, and the interfered base station are different. The functions performed by the devices will be described in connection with the following flow charts.

In another possible implementation, the memory 22 may also be integrated with the processor 21.

The communication interface 23 is used for connecting the communication device with other devices through a communication network, which may be an ethernet, a radio access network, a Wireless Local Area Network (WLAN), or the like. The communication interface 23 may include a receiving unit for receiving data, and a transmitting unit for transmitting data.

The bus 24 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an extended ISA (enhanced industry standard architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 2A, but it is not intended that there be only one bus or one type of bus.

It is noted that the configuration shown in fig. 2A does not constitute a limitation of the communication device, which may comprise more or less components than those shown in fig. 2A, or a combination of certain components, or a different arrangement of components, in addition to those shown in fig. 2A.

Fig. 2B shows another hardware configuration of the communication apparatus in the embodiment of the present invention. As shown in fig. 2B, the communication device may include a processor 31 and a communication interface 32. The processor 31 is coupled to a communication interface 32.

The function of the processor 31 may refer to the description of the processor 21 above. The processor 31 also has a memory function and can function as the memory 22.

The communication interface 32 is used to provide data to the processor 31. The communication interface 32 may be an internal interface of the communication device, or may be an external interface (corresponding to the communication interface 23) of the communication device.

It is noted that the configuration shown in fig. 2A (or fig. 2B) does not constitute a limitation of the communication apparatus, which may include more or less components than those shown in fig. 2A (or fig. 2B), or combine some components, or a different arrangement of components, in addition to the components shown in fig. 2A (or fig. 2B).

As shown in fig. 3, a schematic flow chart of a beam management method provided in the embodiment of the present application includes:

s301, the base station sends first indication information to the terminal.

When the cell covered by the adjacent base station applies the frame structure of the uplink enhanced ratio (for example, the prediction adjustment is performed according to the long-time service condition of the covered area), the terminal downlink receiving is interfered by the terminal uplink transmission signal of the cell covered by the adjacent base station during the time slot crossing. In this case, the base station may transmit the first indication information to the terminal.

The first indication information comprises time domain position information at the time when the terminal generates the cross time slot interference; the first indication information is used for indicating the terminal to measure the RSRP in the multiple beam directions at the time indicated by the time domain position information.

Optionally, the first indication information further includes: and RSRP threshold.

The RSRP threshold is used for determining whether the terminal has beam interference in a cross time slot.

In practical applications, the RSRP threshold may be set by human experience.

Optionally, the RSRP includes layer one Reference Signal received power (L1-RSRP) and Sounding Reference Signal received power (SRS-RSRP); the time domain location information includes time domain location information of the measured SRS-RSRP.

Optionally, when determining the time domain position information, the base station may obtain a first frame structure of a beam configured for the terminal and a second frame structure of a beam configured for the interfering terminal. And then, the base station determines time domain position information of the time when the terminal and the interference terminal generate the cross time slot interference according to the first frame structure and the second frame structure, so that the base station can be ensured to accurately acquire the RSRP of the time when the terminal and the interference terminal generate the cross time slot interference.

For example, when the base station sends the first indication information to the terminal, the terminal may be configured with a measurement indication message (srs-ResourceConfig) for cross timeslot interference detection and a Threshold (Threshold-RSRP) for triggering L1-RSRP reporting through Radio Resource Control (RRC) signaling.

Wherein the time domain position of the measurement indication message is at the crossing time slots of different frame structures.

Alternatively, the base station may be an interfering base station or an interfered base station in the communication system shown in fig. 1B.

Accordingly, when the base station is an interfering base station in the communication system shown in fig. 1B, the terminal is an interfering terminal in a cell covered by the interfering base station.

Accordingly, when the base station is an interfered base station in the communication system shown in fig. 1B, the terminal is an interfered terminal in a cell covered by the interfering base station.

S302, the base station receives a plurality of RSRPs which are sent by the terminal and correspond to a plurality of beam directions one by one.

Specifically, after receiving the first indication information, the terminal may measure RSRPs in a plurality of beam directions and send a plurality of RSRPs corresponding to the plurality of beam directions one to the base station.

For example, as shown in fig. 4, after receiving the first indication information, the terminal may scan Reference Signals (RSs) of "downlink receive beam adjustment" with different receive beams to adjust the current downlink receive beam.

And if the base station configures a measurement indication message of cross-slot interference detection for the terminal, the terminal measures the SRS by the selected receiving beam, and records and sends the SRS RSRP to the base station. Subsequently, the base station may evaluate the interference degree received by the downlink receiving beam at the terminal side.

Optionally, since the first indication information further includes an RSRP threshold, the terminal may determine whether the terminal has beam interference in the cross slot according to the RSRP threshold.

Illustratively, if the SRS RSRP measured on the downlink receiving beam selected by the terminal exceeds the configured Threshold-RSR, it indicates that the beam direction receives strong interference, and L1-RSRP should be reported by a Report message (CSI Report) of extended channel measurement information.

The expanded format comprises measurement results of three groups of receiving beams, and the format of each group is as follows:

1. at most 4 reference signals (beams) are reported;

2. L1-RSRP of the strongest beam;

3. L1-RSRP difference of remaining beams (3) and strongest beam;

4. and SRS-RSRP measured by the downlink receiving beam.

And selecting the measurement results of the other two groups of receiving beams from the SRS RSRP which is scanned and recorded by the measured downlink receiving beams by the terminal and recommending the measurement results to the base station in the Threshold-RSR which is lower than the configured value.

It should be noted that, the mapping relationship of the reported value of SRS-RSRP may refer to related descriptions in the prior art, and is not described herein again.

As still another example, as shown in fig. 5, for the DSUUU frame proportioning base station and the DDDSU frame proportioning base station, the terminal does not interfere with the interfering terminal at time T1, and interferes at time T2.

At time T1, when the terminal measures the configured SSB/Channel State Information-Reference Signal (CSI-RS), no interfering terminal interferes with the terminal at this time. In this case, the terminal can only select the beam direction with stronger base station Signal at this time, no matter based on RSRP or Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio) reporting.

And at time T2, the terminal may measure the SRS of the configured interfering terminal. And if the SRS-RSRP measured on the previously selected receiving beam exceeds the configuration threshold, two new receiving beam directions with SRS-RSRP lower than the configuration threshold are selected.

At the measurement time of the periodic or aperiodic next SSB/CSI-RS, the terminal may also perform L1-RSRP measurement on the two newly selected receive beam directions. And reporting the L1-RSRP by a Report message (CSI Report) of the extended channel measurement information.

And S303, the base station determines the beam direction of the downlink signal of the terminal according to the plurality of RSRPs.

After receiving the plurality of RSRPs, which are sent by the terminal and correspond to the plurality of beam directions one to one, the base station may determine, according to the plurality of RSRPs, whether the terminal receives interference from an interfering terminal in each beam direction, and select a beam direction that is not interfered to determine as a beam direction of a downlink signal of the terminal.

Optionally, the plurality of RSRPs comprises a plurality of L1-RSRPs and a plurality of SRS-RSRPs.

The method for determining the beam direction of the downlink signal of the terminal by the base station according to the plurality of RSRPs specifically includes:

And when the maximum SRS-RSRP in the plurality of SRS-RSRPs is smaller than or equal to the RSRP threshold, determining the beam direction corresponding to the maximum L1-RSRP in the plurality of L1-RSRPs as the beam direction of the downlink signal of the terminal.

For example, as shown in fig. 6, after receiving the CSI Report (L1-RSRP with SRS-RSRP added) reported by the terminal, the base station analyzes the SRS-RSRP in the reported first group of measurement results, and determines that the terminal measurement received the interference of the interfering terminal, which is sent by the downlink beam.

Then, the base station selects a beam direction with better L1-RSRP from the strongest beams corresponding to the two groups of downlink receiving beams recommended by the terminal, and determines the beam direction as the beam direction of the downlink signal of the terminal.

S304, the base station sends second indication information for indicating the terminal to receive the downlink signal according to the beam direction to the terminal.

Illustratively, the base station selects a better beam direction of L1-RSRP from the strongest beams corresponding to the two sets of downlink receiving beams recommended by the Terminal, and issues a Media Access Control (MAC) signaling to indicate a Terminal Control Interface (TCI) corresponding to the beam direction of the Terminal, that is, selects a downlink beam direction that is not interfered by the interfering Terminal for data transmission.

It can be seen that, in the embodiment of the present application, the base station measures RSRP in multiple beam directions by indicating the time of the terminal at the time of the time domain location information indication, so as to determine the beam direction of the downlink signal of the terminal, so that the downlink signal of the terminal is transmitted at the maximum rate, the influence of the sounding reference signal of the neighboring terminal on the downlink signal of the terminal is reduced, the interference situation between terminals using different frame structures is improved, and the network performance of lower beam forming is improved.

The scheme provided by the embodiment of the application is mainly introduced from the perspective of a method. To implement the above functions, it includes hardware structures and/or software modules for performing the respective functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the terminal may be divided into the functional modules according to the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. Optionally, the division of the modules in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

Fig. 7 is a schematic structural diagram of a beam management apparatus according to an embodiment of the present application. The beam management apparatus may be used to perform the beam management method shown in fig. 3. The beam management apparatus shown in fig. 7 includes: a transmitting unit 701, a receiving unit 702, and a processing unit 703;

a sending unit 701, configured to send first indication information to a terminal; the first indication information comprises time domain position information at the time when the terminal generates the cross time slot interference; the first indication information is used for indicating the terminal to measure Reference Signal Received Power (RSRP) in a plurality of beam directions at the time indicated by the time domain position information;

a receiving unit 702, configured to receive multiple RSRPs sent by a terminal and corresponding to multiple beam directions one to one;

a processing unit 703, configured to determine, according to the multiple RSRPs, a beam direction of a downlink signal of the terminal;

the transmitting unit 701 is further configured to transmit, to the terminal, second indication information for indicating that the terminal receives the downlink signal in the beam direction.

the processing unit 703 is specifically configured to:

Optionally, the beam management apparatus further includes: an acquisition unit 704;

an obtaining unit 704, configured to obtain a first frame structure of beams configured for a terminal and a second frame structure of beams configured for an interfering terminal;

the processing unit 703 is configured to determine, according to the first frame structure and the second frame structure, time domain position information of a time when the terminal and the interfering terminal generate cross slot interference.

Embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium includes computer-executable instructions, and when the computer-executable instructions are executed on a computer, the computer is enabled to execute the beam management method provided in the foregoing embodiments.

The embodiments of the present application further provide a computer program, where the computer program may be directly loaded into a memory and contains a software code, and the computer program is loaded and executed by a computer, so as to implement the beam management method provided in the foregoing embodiments.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer-readable storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical function division, and there may be other division ways in actual implementation. For example, various elements or components may be combined or may be integrated into another device, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of beam management, comprising:

receiving a plurality of RSRPs which are sent by the terminal and correspond to the plurality of beam directions one by one;

and sending second indication information for indicating the terminal to receive downlink signals according to the beam direction to the terminal.

2. The beam management method of claim 1, wherein the first indication information further comprises: an RSRP threshold; the RSRP threshold is used for determining whether the terminal has beam interference in a cross time slot;

the RSRP comprises reference signal received power L1-RSRP of layer one and reference signal received power SRS-RSRP of a sounding reference signal; the time domain location information includes time domain location information for measuring the SRS-RSRP.

3. The beam management method of claim 2 wherein the plurality of RSRPs comprises a plurality of L1-RSRPs and a plurality of SRS-RSRPs;

the determining the beam direction of the downlink signal of the terminal according to the plurality of RSRPs includes:

when the maximum SRS-RSRP in the plurality of SRS-RSRPs is larger than the RSRP threshold, determining a beam direction corresponding to the maximum L1-RSRP in a to-be-selected set as a beam direction of a downlink signal of the terminal; the candidate set comprises: at least one L1-RSRP in one-to-one correspondence with at least one SRS-RSRP of the plurality of SRS-RSRPs that is less than the RSRP threshold.

4. The beam management method of claim 1, further comprising:

acquiring a first frame structure of a beam configured for the terminal and a second frame structure of a beam configured for an interfering terminal;

5. A beam management apparatus, comprising: a transmitting unit, a receiving unit and a processing unit;

the sending unit is used for sending first indication information to the terminal; the first indication information comprises time domain position information at the time when the terminal generates the cross time slot interference; the first indication information is used for indicating the terminal to measure Reference Signal Received Power (RSRP) in a plurality of beam directions at the time indicated by the time domain position information;

the receiving unit is configured to receive multiple RSRPs sent by the terminal and corresponding to the multiple beam directions one to one;

the processing unit is configured to determine a beam direction of a downlink signal of the terminal according to the plurality of RSRPs;

the sending unit is further configured to send, to the terminal, second indication information for indicating that the terminal receives the downlink signal in the beam direction.

6. The beam management apparatus of claim 5, wherein the first indication information further comprises: an RSRP threshold; the RSRP threshold is used for determining whether the terminal has beam interference in a cross time slot;

7. The beam management apparatus of claim 6, wherein the plurality of RSRPs comprises a plurality of L1-RSRPs and a plurality of SRS-RSRPs;

the processing unit is specifically configured to:

8. The beam management apparatus of claim 5, further comprising: an acquisition unit;

the acquiring unit is configured to acquire a first frame structure of a beam configured for the terminal and a second frame structure of a beam configured for an interfering terminal;

and the processing unit is used for determining time domain position information of the time when the terminal and the interference terminal generate the cross time slot interference according to the first frame structure and the second frame structure.

9. A beam management apparatus comprising a memory and a processor; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; the processor executes the computer-executable instructions stored by the memory when the beam management apparatus is operating to cause the beam management apparatus to perform the beam management method of any of claims 1-4.

10. A computer-readable storage medium comprising computer-executable instructions that, when executed on a computer, cause the computer to perform the beam management method of any of claims 1-4.