WO2015143898A1

WO2015143898A1 - Beam selection method and base station

Info

Publication number: WO2015143898A1
Application number: PCT/CN2014/094355
Authority: WO
Inventors: 彭炎; 周宏睿
Original assignee: 华为技术有限公司
Priority date: 2014-03-28
Filing date: 2014-12-19
Publication date: 2015-10-01
Also published as: CN104955061A

Abstract

The present invention relates to a beam selection method and a base station. The beam selection method comprises: a base station receives a sound reference signal (SRS) of a user equipment by using an antenna of each of beams, the beams comprising a wide beam and at least two narrow beams; the base station separately determines, according to the SRS, corresponding reference signal receiving power (RSRP) of the user equipment in each beam; the base station determines a service beam of the user equipment according to the RSRP corresponding to each beam. According to the beam selection method and the base station provided by embodiments of the present invention, the base station can accurately select the appropriate service beam for the user equipment, thereby maximizing a cell capacity on a basis of ensuring a user throughput rate.

Description

Beam selection method and base station

Technical field

The present invention relates to the field of communications technologies, and in particular, to a beam selection method and a base station.

Background technique

With the rapid development of the mobile Internet, the explosive growth of business volume has continuously raised new demands on mobile communication networks. Various new technologies emerge in an endless stream, such as Orthogonal Frequency Division Multiplexing (OFDM), Multiple Input Multiple Output (MIMO), relay, Carrier Aggregation (CA) Technology, Coordinated Multi-Point (CoMP) technology. The core of the development of mobile communication technology is to continuously pursue the improvement of spectrum efficiency and capacity to meet the communication needs of users.

Beam-domain communication refers to the addition of a narrow beam based on a wide beam, thereby improving system capacity performance. Wherein, the wide beam refers to a beam that provides cell coverage, such as an omnidirectional beam of an omnidirectional station, or a sector beam of a three-sector station (half-power beamwidth is between 65 degrees and 70 degrees), and a narrow beam refers to a wide beam. A beam covering only a part of the area within the coverage. The essence of beam domain communication is to generate multiple beams by using multiple antennas, that is, to increase the number of transmitting antennas in a unit area, and spatially multiplex the time-frequency resources by utilizing spatial dimensions. In this way, the channel characteristics can be more fully utilized without increasing the bandwidth, and the degree of multiplexing of the time-frequency resources can be improved, thereby maximizing the gain brought by the spatial dimension and improving the spectrum utilization. Further, the high-gain narrow beam sent from the macro station replaces the small station, and the transmission and maintenance cost thereof is greatly reduced, and the coverage of the traditional macro station/sector is not changed, the neighboring area is not affected, and network planning is not required to be performed again. Therefore, the implementation cost is relatively small.

In a system based on beam domain communication, an important issue is how the base station selects a service beam for the user equipment. For example, the base station should be a user equipment (UE) in the cell. Which beam (wide beam or some narrow beam) is selected for its service.

Summary of the invention

technical problem

In view of this, the technical problem to be solved by the present invention is how the base station selects its serving beam for the user equipment.

solution

In order to solve the above technical problem, according to an embodiment of the present invention, a beam selection method is provided, comprising: receiving, by an antenna of each beam, a sounding reference signal SRS of a user equipment, where each of the beams includes a wide beam and Determining, by the base station, the reference signal received power RSRP corresponding to the user equipment according to the SRS, and determining, by the base station, the user equipment according to the RSRP corresponding to each beam Service beam.

For the foregoing beam selection method, in a possible implementation, the determining, by the base station, the service beam of the user equipment according to the RSRP corresponding to the each beam, includes: the base station acquiring the first one from the each beam. a beam, wherein the first beam is a beam having the strongest RSRP among the beams; and in a case where the first beam is the wide beam, the base station determines the first beam as the user a service beam of the device; or, in a case where the first beam is the narrow beam, the base station acquires a second beam, if an RSRP difference between the second beam and the first beam is less than or equal to a threshold, the wide beam is determined as a service beam of the user equipment; or, in a case where the first beam is the narrow beam, the base station acquires a second beam, if the second beam Determining, by the first beam, that the RSRP difference is greater than the first threshold, determining the first beam as a serving beam of the user equipment, where the second beam is a second strongest RSRP in each of the narrow beams Beam.

For the above beam selection method, in a possible implementation manner, after determining, by the base station, the service beam of the user equipment according to the RSRP corresponding to the each beam, the method further includes: In the case that the service beam of the user equipment is the narrow beam, the base station determines the multiplexable beam of the user equipment as all other narrow beams, where the multiplexable beam of the user equipment refers to When the user equipment is scheduled on the determined service beam, the same time-frequency resource can be used to schedule other user equipments to interfere with the data transmission of the user equipment without exceeding a predetermined threshold.

For the foregoing beam selection method, in a possible implementation, the determining, by the base station, the service beam of the user equipment according to the RSRP corresponding to the each beam, includes: the base station acquiring the first one from the each beam. a beam, wherein the first beam is a beam having the strongest RSRP among the respective beams; and the base station determines the first beam as a service beam of the user equipment.

For the beam selection method, after the base station determines the first beam as the serving beam of the user equipment, the base station includes: the first beam is the narrow beam. In the case, the base station determines, as the multiplexable beam of the user equipment, a beam that is smaller than or equal to the second threshold of the RSRP difference of the first beam in the other narrow beams, where the user equipment is recoverable. A beam is a beam that can be used to schedule other user equipment on the same time-frequency resource and interfere with data transmission of the user equipment not exceeding a predetermined threshold when the user equipment is scheduled on the determined service beam.

For the foregoing beam selection method, in a possible implementation, the determining, by the base station, the service beam of the user equipment according to the RSRP corresponding to the each beam, includes: the base station acquiring the first one from the each beam. a beam, wherein the first beam is a beam having the strongest RSRP among the beams; and when the first beam is the wide beam, the base station acquires a second beam, if the second beam And the RSRP difference value of the wide beam is smaller than a third threshold preset for the second beam, where the base station determines the second beam as a service beam of the user equipment; or, in the first In the case that the beam is the wide beam, the base station acquires a second beam, and if the RSRP difference between the second beam and the wide beam is greater than or equal to a third threshold preset for the second beam, Determining the first beam as a service beam of the user equipment, The second beam is a beam with the strongest RSRP among the narrow beams; or, in a case where the first beam is the narrow beam, the base station determines the first beam as the The service beam of the user equipment.

For the foregoing beam selection method, in a possible implementation manner, after determining, by the base station, the service beam of the user equipment according to the RSRP corresponding to each of the respective beams, the method further includes: serving a service beam of the user equipment In the case of the narrow beam, the base station determines, as the multiplexable beam of the user equipment, a beam that is a narrow beam of the serving beam and a narrower beam with a smaller RSRP difference than the fourth threshold. The multiplexable beam of the user equipment refers to that when the user equipment is scheduled on the determined service beam, it can be used to schedule other user equipments on the same time-frequency resource without interference to the data transmission of the user equipment. A beam that exceeds a predetermined threshold.

For the above beam selection method, in a possible implementation manner, after the base station determines, according to the SRS, the reference signal received power RSRP corresponding to the respective beams, the base station further includes: The downlink transmit power of each beam is correspondingly corrected to the initial RSRP determined by the base station; and the modified RSRP is determined as the RSRP corresponding to each beam.

For the above beam selection method, after the base station determines the service beam of the user equipment according to the RSRP corresponding to the respective beams, the service beam of the user equipment is narrow. In the case of a beam, the base station configures a channel state indication reference signal CSI-RS for the user equipment; the base station sends the CSI-RS to the user equipment by using a service beam of the user equipment, so that the The user equipment performs channel feedback on the CSI-RS.

In order to solve the above technical problem, according to another embodiment of the present invention, a base station is provided, including: a receiving module, configured to receive, by an antenna of each beam, a sounding reference signal SRS of a user equipment, where each of the beams includes one a wide beam and at least two narrow beams; a determining module, coupled to the receiving module, configured to determine, according to the SRS, the user equipments in the respective beams respectively Corresponding reference signal receiving power RSRP; the processing module is connected to the determining module, and configured to determine a service beam of the user equipment according to the RSRP corresponding to each beam.

For the above-mentioned base station, in a possible implementation, the processing module is configured to: acquire a first beam from the respective beams, where the first beam is a beam with the strongest RSRP among the beams; And determining, in the case that the first beam is the wide beam, the first beam as a service beam of the user equipment; or, in a case where the first beam is the narrow beam, acquiring a second beam, if the RSRP difference between the second beam and the first beam is less than or equal to a first threshold, determining the wide beam as a serving beam of the user equipment; or, in the first beam In the case of the narrow beam, the base station acquires a second beam, and if the RSRP difference between the second beam and the first beam is greater than a first threshold, determining the first beam as the user A service beam of the device, wherein the second beam is a beam with a strong RSRP in each of the narrow beams.

For the above-mentioned base station, in a possible implementation, the processing module is further configured to: when the serving beam of the user equipment is the narrow beam, determine the multiplexable beam of the user equipment as All other narrow beams, wherein the multiplexable beam of the user equipment refers to that can be used to schedule other user equipment on the same time-frequency resource when the user equipment is scheduled on the determined service beam The interference of the data transmission of the user equipment does not exceed the predetermined threshold.

For the above-mentioned base station, in a possible implementation, the processing module is configured to: acquire a first beam from the respective beams, where the first beam is a beam with the strongest RSRP among the beams; Determining the first beam as a serving beam of the user equipment.

In a possible implementation manner, the processing module is further configured to: when the first beam is the narrow beam, the RSRP difference between the other narrow beams and the first beam A beam having a value less than or equal to a second threshold is determined as a multiplexable beam of the user equipment, where the multiplexable beam of the user equipment refers to being the same when scheduling the user equipment on the determined service beam Time-frequency resources can be used to schedule other user equipment to the user equipment The data transmission interferes with a beam that does not exceed a predetermined threshold.

For the above-mentioned base station, in a possible implementation, the processing module is configured to: acquire a first beam from the respective beams, where the first beam is a beam with the strongest RSRP among the beams; If the first beam is the wide beam, acquiring a second beam, if an RSRP difference between the second beam and the wide beam is smaller than a third threshold preset for the second beam, Determining the second beam as a service beam of the user equipment; or, in a case where the first beam is the wide beam, the base station acquires a second beam, if the second beam and the Determining, by the second beam, a service beam of the user equipment, where the RSRP difference of the wide beam is greater than or equal to a third threshold preset for the second beam, where the second beam is each The RSRP is the strongest beam in the narrow beam; or, in the case where the first beam is the narrow beam, the first beam is determined as the serving beam of the user equipment.

For a base station, in a possible implementation, the processing module is further configured to: when the service beam of the user equipment is the narrow beam, use a narrow beam as a service beam and other narrow beams. A beam whose RSRP difference is less than or equal to the fourth threshold is determined as a multiplexable beam of the user equipment, where the multiplexable beam of the user equipment refers to when the user equipment is scheduled on the determined service beam. A beam that can be used to schedule other user equipment on the same time-frequency resource without interference with data transmission of the user equipment exceeding a predetermined threshold.

For the above-mentioned base station, in a possible implementation, the method further includes: a correction module, connected to the determining module and the processing module, configured to determine an initial to the base station according to downlink transmit power of each beam The RSRP performs corresponding correction and is used to determine the corrected RSRP as the RSRP corresponding to the respective beams.

For the above-mentioned base station, in a possible implementation, the method further includes: a configuration module, configured to be connected to the processing module, configured to configure a channel for the user equipment if the service beam of the user equipment is a narrow beam a status indication reference signal CSI-RS; a sending module, configured to be connected to the configuration module, configured to send the CSI-RS to the user equipment by using a service beam of the user equipment, to And causing the user equipment to perform channel feedback on the CSI-RS.

Beneficial effect

According to the beam selection method and the base station of the embodiment of the present invention, the base station can accurately select an appropriate service beam for the user equipment, thereby maximizing the cell capacity on the basis of ensuring the user throughput rate.

Further features and aspects of the present invention will become apparent from the Detailed Description of the Drawing.

DRAWINGS

The accompanying drawings, which are incorporated in FIG

1 shows a flow chart of a beam selection method in accordance with an embodiment of the present invention;

2 shows a flow chart of a beam selection method in accordance with another embodiment of the present invention;

FIG. 3 shows a flowchart of a beam selection method according to still another embodiment of the present invention; FIG.

4 shows a flow chart of a beam selection method in accordance with yet another embodiment of the present invention;

FIG. 5 shows a flowchart of a beam selection method according to still another embodiment of the present invention; FIG.

6 is a block diagram showing the structure of a base station according to an embodiment of the present invention;

FIG. 7 is a block diagram showing the structure of a base station according to another embodiment of the present invention; FIG.

FIG. 8 is a block diagram showing the structure of a base station according to still another embodiment of the present invention.

detailed description

Various exemplary embodiments, features, and aspects of the invention are described in detail below with reference to the drawings. The same reference numerals in the drawings denote the same or similar elements. Although the various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustrative." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or preferred.

In addition, numerous specific details are set forth in the Detailed Description of the invention in the Detailed Description. Those skilled in the art will appreciate that the invention may be practiced without some specific details. In some instances, methods, means, components, and circuits that are well known to those skilled in the art are not described in detail in order to facilitate the invention.

As described in the Summary of the Invention and the Background, beam-domain communication refers to the deployment of an auxiliary antenna in the vicinity of an original macro station antenna, or replacement of an antenna, so that multiple narrow beams that do not completely overlap in the coverage of the original cell are covered. . Different narrow beams can have different orientations in the horizontal/vertical dimension so that different beams are isolated in this dimension of the beam domain. User equipment covered by different narrow beams can be multiplexed and transmitted on the same time-frequency resource.

Compared with multi-user multiplexing in the spatial domain, multi-user multiplexing of the beam domain has the following characteristics. First, when beam domain multiplexing, the isolation between beams is controlled by different beam parameters such as horizontal pointing, vertical pointing, and downtilt. These beam parameters can be realized by antennas, relative to the isolation of different channels in the spatial domain. In the case of beam domain multiplexing, the isolation between beams is more stable and controllable. Second, due to the characteristics of different narrow beam isolation in beam domain communication, the relationship between the user equipment and its service beam has strong stability, which changes slowly with large-scale changes between the user equipment and the macro station and the auxiliary antenna.

In a scenario based on beam-domain communication, one of the first problems to be solved is that for a user equipment, whether the base station should select a wide beam for data transmission or a narrow beam for data transmission. If the base station selects a narrow beam, which narrow beam should be selected for data transmission for the user equipment.

Based on the above problem, after the beam selection method of the present application, the service beam of the user equipment (a wide beam or a narrow beam) can be determined. Moreover, the beam selection method of the present application can further determine the multiplexable beam of the user equipment. The multiplexable beam of the user equipment refers to data transmission that can be used to schedule other user equipments on the same time-frequency resource when the user equipment is scheduled on the determined service beam. a wave whose interference does not exceed a predetermined threshold bundle. That is, when the user equipment is scheduled on the service beam, other user equipments are scheduled on the multiplexable beam on the same time-frequency resource without causing serious interference to data transmission of the user equipment.

The detailed process of the beam selection method of the present application can be referred to the description of the following embodiments.

Example 1

FIG. 1 shows a flow chart of a beam selection method in accordance with an embodiment of the present invention. As shown in FIG. 1, the method may mainly include the following steps:

Step S100: The base station receives a sounding reference signal (SRS) of the user equipment by using an antenna of each beam, where each beam includes a wide beam and at least two narrow beams;

Step S110: The base station determines, according to the SRS, Reference Signal Receiving Power (RSRP) corresponding to the respective beams of the user equipment;

Step S140: The base station determines a service beam of the user equipment according to the RSRP corresponding to the each beam.

Specifically, the base station in the present application can perform service beam selection for the user equipment based on a reference signal such as an SRS signal in the beam domain communication system. For example, when the reference signal is an SRS signal, the base station may first receive an SRS signal sent by a user equipment on an antenna port of each beam corresponding antenna in an uplink direction, where each beam includes one wide beam and at least two narrow beams. Then, the base station determines the RSRP corresponding to the user equipment on each beam according to the received SRS signal power of each beam. Finally, the service beam of the user equipment is determined according to the determined RSRP corresponding to the user equipment on each beam.

In a possible implementation manner, after the step S140, the method further includes:

Step S150: The base station configures a channel state indication reference signal (CSI-RS) for the user equipment, where the service beam of the user equipment is a narrow beam.

Step S160: The base station sends the CSI-RS to the user equipment by using a service beam of the user equipment, so that the user equipment performs channel feedback on the CSI-RS.

Specifically, the base station transmits different CSI-RSs on each of the different narrow beams. In the case that the service beam of the user equipment is determined to be a narrow beam, the base station configures a CSI-RS transmitted by the service beam of the user equipment to the user equipment, so that the user equipment pairs the CSI The RS performs channel feedback to determine the rate at which the user equipment transmits data and the manner of transmission. In this way, the user equipment and the base station can transmit data on the service beam according to the determined rate and transmission mode of the transmission data.

It should be noted that, in a possible implementation, the foregoing steps S150 and S160 may be performed after determining the service beam of the user equipment, or may be performed after determining the multiplexable beam of the user equipment in the following embodiments.

In a possible implementation manner, the base station may periodically trigger a reselection process of the service beam of the user equipment. For example, after the user equipment completes access to the base station, the base station begins to perform a beam selection process according to the beam selection method described above. After the service beam of a certain user equipment is determined, the service beam reselection process of the user equipment is triggered once every certain period.

In another possible implementation manner, the base station may trigger a reselection process of the service beam of the user equipment by using a predetermined RSRP threshold. For example, after the RSRP corresponding to the SRS sent by the user equipment received by the certain equipment reaches a preset RSRP threshold, the service beam reselection process of the user equipment is triggered. For example, if a user is selected in a narrow beam, the base station may reach an upper limit or a certain channel quality indicator (CQI) based on the RSRS of the user's SRS or the CSI-RS feedback. For a limited time, select it to a wide beam.

According to the beam selection method of the embodiment of the present invention, the base station can determine the service beam of the user equipment according to the received RSRP determined by the SRS signal sent by each user equipment on each beam. Moreover, the base station can also preset a certain period or an RSRP threshold to trigger a service wave of the user equipment. The process of re-selection of the bundle.

Example 2

2 shows a flow chart of a beam selection method in accordance with another embodiment of the present invention. As shown in FIG. 2, the main difference between the beam selection method of this embodiment and the previous embodiment is that the foregoing step S140 may mainly include the following steps:

Step S210: The base station acquires a first beam from the respective beams, where the first beam is a beam with the strongest RSRP among the beams.

Step S220, in a case where the first beam is the wide beam, the base station determines the first beam as a service beam of the user equipment;

Step S240: In a case where the first beam is the narrow beam, the base station acquires a second beam, where the second beam is a beam with a strong RSRP among the narrow beams.

Step S2401: If the RSRP difference between the second beam and the first beam is less than or equal to the first threshold, determine the wide beam as a service beam of the user equipment,

Step S2402: If the RSRP difference between the second beam and the first beam is greater than the first threshold, determine the first beam as a service beam of the user equipment.

In a possible implementation, after the step S220, the beam selection method may further include step S230.

Step S230, in a case that the service beam of the user equipment is the wide beam, the base station determines that the multiplexable beam of the user equipment is absent;

In a possible implementation manner, after step S2402, the beam selection method may further include step S250.

Step S250: In a case that the serving beam of the user equipment is the narrow beam, the base station determines the multiplexable beam of the user equipment as all other narrow beams.

Specifically, after determining, by the base station, the RSRP corresponding to each user equipment on each beam, the base station may compare the determined RSRPs and obtain the beam with the strongest RSRP.

If the strongest beam of the RSRP is a wide beam, the base station may determine the wide beam as the service beam of the user equipment, and the user equipment does not have a multiplexable beam, that is, when the base station transmits data for the user equipment by using the wide beam. On the same time-frequency resource, the base station cannot transmit data for other user equipments on any other narrow beam, otherwise it will cause serious interference to the data transmission of the user equipment.

If the strongest RSRP beam is a narrow beam, the base station can determine whether the RSRP difference between the second strongest narrow beam and the strongest narrow beam is greater than a preset isolation threshold, that is, the first threshold. If the difference between the RSRP of the strongest narrow beam and the RSRP of the second strong narrow beam is less than or equal to the preset first threshold, the base station selects the wide beam as the service beam of the user equipment. At this time, the user equipment also does not have a multiplexable beam.

If the RSRP difference between the secondary strong narrow beam and the strongest narrow beam is greater than the first threshold, the base station may select the strongest narrow beam as the serving beam of the user equipment. At this time, the multiplexable beam of the user equipment is all narrow beams except the strongest narrow beam. That is, when the base station transmits data for the user equipment by using the strongest narrow beam, the base station can transmit data for other user equipments on any other narrowband beam without using the same time-frequency resource, without data transmission to the user equipment. Causes serious interference.

For example, assume that the RSRP of a certain user equipment in a wide beam and three narrow beams Beam1, Beam2, and Beam3 determined by the base station is as follows. The preset first threshold is 6 dBm.

宽波束Wide beam	-74dBm-74dBm
宽波束Wide beam	-74dBm-74dBm	Beam1Beam1	-72dBm-72dBm
Beam2Beam2	-75dBm-75dBm	Beam1Beam1	-72dBm-72dBm
Beam2Beam2	-75dBm-75dBm	Beam3Beam3	-80dBm-80dBm

From the above table, the strongest beam of RSRP is Beam1, and the second strongest beam is Beam2. The difference between the two is 3dBm, which is less than the preset first threshold of 6dBm. Therefore, the service beam of the user equipment is a wide beam, and there is no multiplexable beam set.

In this embodiment, only the service beam of the user equipment in the narrow beam isolation area is a narrow beam, and in other cases, the service beam of the user equipment is a wide beam. That is, the wide beam is preferentially used to serve the user equipment, so that the user equipment under the base station is less interfered as a whole.

Example 3

FIG. 3 shows a flow chart of a beam selection method in accordance with yet another embodiment of the present invention. As shown in FIG. 3, the main difference between the beam selection method of this embodiment and the previous embodiment is that the foregoing step S140 may mainly include the following steps:

Step S310: The base station acquires a first beam from the respective beams, where the first beam is a beam with the strongest RSRP among the beams.

Step S320: The base station determines the first beam as a service beam of the user equipment.

In a possible implementation, after the step S320, the beam selection method of the embodiment may further include steps S330 and S340.

Step S330, in a case where the first beam is the wide beam, the base station determines that the multiplexable beam of the user equipment is absent;

Step S340, in the case that the first beam is the narrow beam, determine, as the user equipment, a beam that is smaller than or equal to a second threshold of the RSRP difference between the other narrow beams and the first beam. Use the beam.

Specifically, similar to the previous embodiment, after the base station determines the RSRP corresponding to each user equipment on each beam in step S110, the base station can compare the determined RSRPs and obtain the beam with the strongest RSRP.

Then, the base station selects the beam with the strongest RSRP as the service beam of the user equipment.

If the strongest beam of the RSRP is a wide beam, the base station determines the wide beam as the serving beam of the user equipment, and the user equipment does not have a multiplexable beam.

If the strongest beam of the RSRP is a narrow beam, the base station selects the narrow beam as the user equipment. The service beam, that is, the narrow beam is selected for data transmission of the user equipment. Then, it is sequentially determined whether the difference between the other narrow beams and the RSRP of the RSRP strongest narrow beam is less than a preset isolation threshold, that is, a second threshold. If the difference between the strongest narrowband of the RSRP and the RSRP of a narrow beam is greater than or equal to a preset second threshold, the narrow beam is a multiplexable beam of the user equipment. Otherwise, the narrow beam is not a multiplexable beam of the user equipment.

For example, assume that the RSRP of a certain user equipment in a wide beam and three narrow beams Beam1, Beam2, and Beam3 is as follows, and the preset second threshold is 6 dBm;

As can be seen from the above table, the strongest RSRP beam is Beam1. Therefore, the base station selects Beam1 as the service beam of the user equipment. Beam2 has an RSRP of -75dBm, and the RSRP difference from the strongest beam is 3dBm, which is less than the preset second threshold. Therefore, Beam2 is not a multiplexable beam of the user equipment. The RSRP of the Beam3 is -80 dBm, and the difference between the RSRP of the strongest beam is 8 dBm, which is greater than or equal to the preset second threshold. Therefore, Beam3 is a multiplexable beam of the user equipment.

In this embodiment, the base station selects the determined beam with the strongest RSRP of the user equipment as the serving beam of the user equipment, which is optimal from the perspective of coverage. In this way, the user equipment under the base station can be less interfered overall and the edge performance is better.

Example 4

4 shows a flow chart of a beam selection method in accordance with yet another embodiment of the present invention. As shown in FIG. 4, the main difference between the beam selection method of this embodiment and the previous embodiment is that the foregoing step S140 may mainly include the following steps:

Step S410: The base station acquires a first beam from the respective beams, where the first beam is a beam with the strongest RSRP among the beams.

Step S420: In a case where the first beam is the wide beam, the base station acquires a second beam. The second beam is a beam with the strongest RSRP among the narrow beams.

Step S4201: The RSRP difference between the second beam and the wide beam is smaller than a third threshold preset for the second beam, and the base station determines the second beam as a service beam of the user equipment.

Step S4202: The difference between the wide beam and the RSRP of the second beam is greater than or equal to a third threshold preset for the second beam, and the first beam is determined to be a serving beam of the user equipment.

Step S430: Determine the first beam as a service beam of the user equipment if the first beam is the narrow beam.

In a possible implementation manner, after the step S4202, the beam selection method of the embodiment may further include step S440.

Step S440: In a case where the service beam of the user equipment is the wide beam, the base station determines that the multiplexable beam of the user equipment is absent.

Step S450: In a case where the service beam of the user equipment is the narrow beam, determine, as the user equipment, a beam whose difference between the narrow beam as the service beam and the RSRP in the other narrow beams is less than or equal to the fourth threshold. Reusable beam.

If the strongest beam of the RSRP is a wide beam, the base station acquires the second beam, and determines whether the RSRP difference between the second beam and the wide beam is smaller than a third threshold preset for the second beam. The second beam is a narrowest beam with a strong RSRP, and the third threshold is a range extension (RE) value pre-configured for the second beam, where the RE value is for the second beam Pre-configured modifiers.

If the base station determines that the RSRP difference between the second beam and the wide beam is smaller than the pre-configured RE value for the second beam, it indicates that even if the base station selects the narrow beam as the serving beam of the user equipment, the user equipment The coverage performance is not too much, so the base station can select the strongest narrow beam as the service beam of the user equipment. Then, it is sequentially determined whether the RSRP difference between the other narrow beam and the second beam is less than a preset isolation threshold, that is, a fourth threshold. If the RSRP difference between a narrow beam and the second beam is greater than or equal to a preset isolation threshold, that is, a fourth threshold, the narrow beam is a multiplexable beam of the user equipment. Otherwise, the narrow beam is not a multiplexable beam of the user equipment.

If the base station determines that the RSRP difference between the second beam and the wide beam is greater than or equal to a preset third threshold, the base station selects the wide beam as the service beam of the user equipment, and the user equipment does not exist. Reusable beams.

If the strongest beam of the RSRP is a narrow beam, the base station selects the narrow beam as the serving beam of the user equipment, that is, selects the narrow beam to perform data transmission for the user equipment. Then, it is sequentially determined whether the RSRP difference between the other narrow beam and the RSRP strongest narrow beam is less than a preset fourth threshold. If the difference between the strongest narrowband of the RSRP and the RSRP of a narrow beam is greater than or equal to a preset fourth threshold, the narrow beam is a multiplexable beam of the user equipment. Otherwise, the narrow beam is not a multiplexable beam of the user equipment.

It should be noted that, in general, the base station pre-configures the RE value for each narrow beam, and the RE values of different narrow beams may be the same or different. For example, for different narrow beams, or narrow beams with different loads (the number of user devices absorbed by different deployments is different due to uneven user distribution), different RE values are configured.

For example, assume that the RSRP of a certain user equipment in a wide beam and three narrow beams Beam1, Beam2, and Beam3 determined by the base station is as follows, and the fourth threshold is 6 dBm.

宽波束Wide beam	-70dBm-70dBm
宽波束Wide beam	-70dBm-70dBm	Beam1Beam1	-72dBm-72dBm
Beam2Beam2	-75dBm-75dBm	Beam1Beam1	-72dBm-72dBm
Beam2Beam2	-75dBm-75dBm	Beam3Beam3	-80dBm-80dBm

As can be seen from the above table, the strongest beam of RSRP is a wide beam. Therefore, the narrow beam Beam1 of RSRP is -72. It is assumed that the pre-configured RE value for Beam1 is 3 dB, that is, the third threshold is 3 dB. Since the difference between the RSRP of the Beam1 and the wide beam is 2, which is smaller than the third threshold, the base station selects Beam1 as the service beam of the user equipment. The RSRP of Beam2 is -75dBm, and the difference between the RSRP of the strongest narrow beam is 3dBm, which is smaller than the preset fourth threshold. Therefore, Beam2 is not a multiplexable beam of the user equipment. The RSRP of the Beam3 is -80 dBm, and the difference between the RSRP of the strongest narrow beam Beam1 is 8 dBm, which is greater than or equal to the preset fourth threshold. Therefore, Beam3 is a multiplexable beam of the user equipment.

It should be noted that the first threshold, the second threshold, and the fourth threshold preset in the present application may be the same or different, and the specific setting may be flexibly set according to the actual application scenario.

In this embodiment, the base station may select a narrow beam as its serving beam for more user equipment that meets the preset isolation condition, thereby increasing the probability of beam multiplexing. At the same time, by setting the RE value reasonably, it is possible to ensure that the capacity gain of multiplexing is increased without any loss of coverage performance.

Example 5

FIG. 5 shows a flow chart of a beam selection method according to still another embodiment of the present invention. As shown in FIG. 5, the main difference between the beam selection method of this embodiment and the previous embodiment is that after the foregoing step S110, the following steps may be further included:

Step S120: The base station performs corresponding correction on the initial RSRP determined by the base station according to the downlink transmit power of the each beam; and/or the base station corrects the initial of each narrow beam according to the resource particle corresponding to each narrow beam configured in advance. RSRP.

Step S130: Determine the corrected RSRP as the RSRP corresponding to each beam.

Specifically, according to an actual application scenario, the base station may perform corresponding correction on the determined RSRP.

In a possible implementation manner, the base station may modify, according to the downlink transmit power of the each beam, the corresponding RSRP determined by the base station. For example, assume that the RSRP of a certain user equipment in a wide beam and three narrow beams Beam1, Beam2, and Beam3 is as follows. It is assumed that the downlink transmit power of the wide beam and the three narrow beams Beam1, Beam2, and Beam3 are 40 dBm, respectively. 46dBm, 43dBm, 41dBm. At this time, the RSRP of each beam of the user equipment is added to the corresponding downlink relative transmit power to obtain the corrected RSRP of each beam.

Preferably, in this example, the following beam with the smallest transmit power can be used as a reference, here a wide beam, 40 dBm is changed to 0 dBm, and correspondingly, 6 dBm, 3 dBm, 1 dBm can be used, and then corresponding to the user equipment. The RSRP of each beam is added to obtain the corrected RSRP of each beam as described in the following table.

宽波束Wide beam	-70dBm-70dBm
宽波束Wide beam	-70dBm-70dBm	Beam1Beam1	-66dBm-66dBm
Beam2Beam2	-72dBm-72dBm	Beam1Beam1	-66dBm-66dBm
Beam2Beam2	-72dBm-72dBm	Beam3Beam3	-79dBm-79dBm

After the base station corrects the RSRP of each beam corresponding to the user equipment according to the downlink transmit power of each beam, the base station may select a service beam for the user equipment according to the beam selection method in any of the foregoing embodiments, and further determine the corresponding corresponding to the user equipment. Reusable beam.

The base station corrects the RSRP of each beam corresponding to the user equipment according to the downlink transmit power of each beam, so that the service beam and the multiplexable beam selected by the beam selection method in the foregoing embodiment are more accurate.

According to the beam selection method of the embodiment of the present invention, the downlink transmit power of each beam is multiplexed to correct the RSRP of each beam according to an actual application scenario to meet actual application requirements.

Example 6

FIG. 6 is a block diagram showing the structure of a base station according to an embodiment of the present invention. As shown in FIG. 6, the base station 60 can mainly include a receiving module 61, a determining module 62, and a processing module 63. The receiving module 61 is configured to receive, by using an antenna of each beam, a sounding reference signal SRS of the user equipment, where each of the beams includes a wide beam and at least two narrow beams; a determining module 62, and the receiving module The connection is mainly used to determine the reference signal received power RSRP corresponding to the user equipment according to the SRS, and the processing module 63 is connected to the determining module 62 for corresponding to each of the beams. RSRP, determining a service beam of the user equipment.

In a possible implementation manner, the foregoing base station 60 may further include a configuration module 64 and a sending module 65. The configuration module 64 is connected to the processing module 63, configured to configure a channel state indication reference signal CSI-RS for the user equipment when the service beam of the user equipment is a narrow beam, and a sending module 65, And the configuration module is configured to send the CSI-RS to the user equipment by using a service beam of the user equipment, so that the user equipment performs channel feedback on the CSI-RS.

In a possible implementation manner, the base station 60 may periodically trigger a reselection process of the service beam of the user equipment. For example, after the user equipment completes access to the base station 60, the base station 60 begins the beam selection process. After the service beam of a certain user equipment is determined, the service beam reselection process of the user equipment is triggered once every certain period.

In another possible implementation manner, the base station 60 may trigger a reselection process of the service beam of the user equipment by using a predetermined RSRP threshold. For example, after the RSRP corresponding to the SRS sent by the user equipment received by the certain base station reaches the preset RSRP threshold, the service beam reselection process of the user equipment is triggered. For example, selecting a user under a narrow beam, The base station 60 may select the RSRP corresponding to the SRS of the user or the CQI based on the CSI-RS feedback of the user to reach a certain upper limit or a certain lower limit, and select the wide beam.

The base station according to the embodiment of the present invention is capable of determining a service beam of the user equipment according to the received RSRP determined by the SRS signal sent by each user equipment on each beam. Moreover, the base station can also preset a certain period or an RSRP threshold to trigger a reselection process of the service beam of the user equipment.

Example 7

FIG. 7 is a block diagram showing the structure of a base station according to another embodiment of the present invention. As shown in FIG. 7, the main difference between the base station 70 of the present embodiment and the base station 60 of the previous embodiment is that, in a possible implementation, the processing module 63 is mainly used to:

Acquiring a first beam from the respective beams, wherein the first beam is a beam with the strongest RSRP among the beams;

And determining, in the case that the first beam is the wide beam, the first beam as a service beam of the user equipment;

If the first beam is the narrow beam, acquiring a second beam, if the RSRP difference between the second beam and the first beam is less than or equal to a first threshold, determining the wide beam a service beam for the user equipment; or,

In the case that the first beam is the narrow beam, the base station acquires a second beam, and if the RSRP difference between the second beam and the first beam is greater than a first threshold, the first The beam is determined to be a serving beam of the user equipment, wherein the second beam is a beam with a strong RSRP in each of the narrow beams.

Correspondingly, in a possible implementation, the processing module 63 can also be used to:

Determining, in a case where the service beam of the user equipment is the wide beam, determining that the multiplexable beam of the user equipment is absent;

Where the service beam of the user equipment is the narrow beam, the user equipment is The multiplexable beam is determined to be all other narrow beams, wherein the multiplexable beam of the user equipment refers to that can be used for scheduling on the same time-frequency resource when the user equipment is scheduled on the determined service beam. The interference of other user equipments to the data transmission of the user equipment does not exceed a predetermined threshold.

In the above implementation manner of the embodiment, only the service beam of the user equipment in the narrow area of the narrow beam isolation is a narrow beam, and the service beams of the user equipment in other cases are all wide beams. That is, the wide beam is preferentially used to serve the user equipment, so that the user equipment under the base station is less interfered as a whole.

In a possible implementation, the processing module 63 is mainly used to:

Determining the first beam as a serving beam of the user equipment.

And determining, in the case that the first beam is the wide beam, the reusable beam of the user equipment is absent;

And determining, in the case that the first beam is the narrow beam, a beam that is less than or equal to a second threshold of an RSRP difference between the other narrow beams and the first beam is a multiplexable beam of the user equipment, The multiplexable beam of the user equipment refers to data transmission that can be used to schedule other user equipments on the same time-frequency resource when the user equipment is scheduled on the determined service beam. The interference does not exceed the beam of the predetermined threshold.

In the above implementation manner of the embodiment, the base station selects the determined beam with the strongest RSRP of the user equipment as the service beam of the user equipment, which is optimal from the perspective of coverage. In this way, the user equipment under the base station can be less interfered overall and the edge performance is better.

In a possible implementation, the processing module 63 is mainly used to:

Acquiring a first beam from the respective beams, wherein the first beam is the respective wave The strongest beam of RSRP in the beam;

If the first beam is the wide beam, the second beam is obtained, and if the RSRP difference between the second beam and the wide beam is determined to be smaller than a third threshold preset for the second beam, Determining the second beam as a service beam of the user equipment; or

In a case where the first beam is the wide beam, the base station acquires a second beam, if an RSRP difference between the second beam and the wide beam is greater than or equal to a preset for the second beam a third threshold, where the first beam is determined as a service beam of the user equipment, where the second beam is a beam with the strongest RSRP among the narrow beams; or

Where the first beam is the narrow beam, the first beam is determined to be a serving beam of the user equipment.

And determining, in the case that the service beam of the user equipment is the narrow beam, a beam with a narrow difference between the narrow beam and the other narrow beams with an RSRP difference of less than or equal to a fourth threshold as the reusable of the user equipment. a beam, wherein the multiplexable beam of the user equipment refers to a user equipment that can be used to schedule other user equipment on the same time-frequency resource when the user equipment is scheduled on the determined service beam The beam of data transmission does not exceed the predetermined threshold.

In the above implementation manner of the embodiment, the base station may select a narrow beam as its serving beam for more user equipment that meets the preset isolation condition, thereby increasing the probability of beam multiplexing. At the same time, by setting the third threshold reasonably, it is ensured that the coverage performance does not cause significant loss, and the capacity gain brought by multiplexing can be increased.

In a possible implementation, the base station 70 may further include a correction module 66. The correction module 66 is connected to the determining module 62 and the processing module 63, and is configured to perform corresponding correction on the initial RSRP determined by the base station according to downlink transmit power of each beam, and And configured to determine the corrected RSRP as the RSRP corresponding to the each beam.

According to the foregoing specific implementation manners of the embodiments of the present invention, the downlink transmit power of each beam is multiplexed to correct the RSRP of each beam according to an actual application scenario, so as to meet actual application requirements.

Example 8

FIG. 8 is a block diagram showing the structure of a base station according to still another embodiment of the present invention. The base station 800 may be a host server having computing power, a personal computer PC, or a portable computer or terminal that can be carried. The specific embodiments of the present invention do not limit the specific implementation of the computing node.

The base station 800 includes a processor 810, a communications interface 820, a memory 830, and a bus 840. Among them, the processor 810, the communication interface 820, and the memory 830 complete communication with each other through the bus 840.

Communication interface 820 is for communicating with network devices, including, for example, a virtual machine management center, shared storage, and the like.

The processor 810 is configured to execute a program. The processor 810 may be a central processing unit CPU, or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.

The memory 830 is used to store files. The memory 830 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory. Memory 830 can also be a memory array. Memory 830 may also be partitioned, and the blocks may be combined into virtual volumes according to certain rules.

In a possible implementation, the above program may be program code including computer operating instructions. This program can be used to:

The base station receives the sounding reference signal SRS of the user equipment by using an antenna of each beam, where each of the beams includes one wide beam and at least two narrow beams;

Determining, by the base station, the user equipment corresponding to each of the beams according to the SRS Reference signal received power RSRP;

The base station determines a service beam of the user equipment according to the RSRP corresponding to each of the beams.

In a possible implementation manner, the determining, by the base station, the service beam of the user equipment according to the RSRP corresponding to the respective beams, including:

The base station acquires a first beam from the respective beams, where the first beam is a beam with the strongest RSRP among the beams;

In a case where the first beam is the wide beam, the base station determines the first beam as a service beam of the user equipment; or

In a case where the first beam is the narrow beam, the base station acquires a second beam, and if the RSRP difference between the second beam and the first beam is less than or equal to a first threshold, The wide beam is determined to be a service beam of the user equipment; or

In a possible implementation, after the base station determines the service beam of the user equipment according to each of the RSRPs, the foregoing program further includes:

Where the serving beam of the user equipment is the narrow beam, the base station determines the multiplexable beam of the user equipment as all other narrow beams,

The multiplexable beam of the user equipment refers to data transmission that can be used to schedule other user equipments on the same time-frequency resource when the user equipment is scheduled on the determined service beam. The interference does not exceed the beam of the predetermined threshold.

The base station determines the first beam as a service beam of the user equipment.

In a possible implementation manner, after the base station determines the first beam as a service beam of the user equipment, the foregoing procedure includes:

In the case that the first beam is the narrow beam, the base station determines, as the user equipment, the beam of the other narrow beam with the RSRP difference of the first beam being less than or equal to the second threshold. Using beams,

In a case where the first beam is the wide beam, the base station acquires a second beam, if an RSRP difference between the second beam and the wide beam is smaller than a third preset for the second beam a threshold, the base station determining the second beam as a service beam of the user equipment; or

Where the first beam is the narrow beam, the base station determines the first beam as a serving beam of the user equipment.

In the case that the service beam of the user equipment is the narrow beam, the base station determines, as the user equipment, a beam that is a narrow beam of the service beam and a narrower beam with a smaller RSRP difference than the fourth threshold. Reusable beam,

In a possible implementation, after the base station determines, according to the SRS, the reference signal received power RSRP corresponding to the respective beams, the foregoing program further includes:

The base station performs corresponding correction on the initial RSRP determined by the base station according to the downlink transmit power of the each beam;

The corrected RSRP is determined as the RSRP corresponding to each beam.

In a possible implementation, after the base station determines the service beam of the user equipment according to the RSRP corresponding to the each beam, the foregoing procedure includes:

In the case that the service beam of the user equipment is a narrow beam, the base station configures a channel state indication reference signal CSI-RS for the user equipment;

The base station sends the CSI-RS to the user equipment by using a service beam of the user equipment, so that the user equipment performs channel feedback on the CSI-RS.

Those of ordinary skill in the art will appreciate that the various exemplary elements and algorithm steps in the embodiments described herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can select different methods for implementing the described functions for a particular application, but such implementation should not be considered to be beyond the scope of the present invention.

If the functionality is implemented in the form of computer software and sold or made as a standalone product When used, it is considered that all or part of the technical solution of the present invention (for example, a part contributing to the prior art) is embodied in the form of a computer software product. The computer software product is typically stored in a computer readable non-volatile storage medium, including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all of the methods of various embodiments of the present invention. Or part of the steps. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Practicality

The beam selection method and the base station according to the embodiments of the present invention are applicable to the field of communications, and are particularly applicable to beam domain communication, and can accurately select an appropriate service beam for a user equipment, thereby maximizing the user throughput rate. Cell capacity.

Claims

A beam selection method, comprising:

The base station receives the sounding reference signal SRS of the user equipment by using an antenna of each beam, where each of the beams includes one wide beam and at least two narrow beams;

Determining, by the base station, the reference signal received power RSRP corresponding to the respective beams of the user equipment according to the SRS;

The base station determines a service beam of the user equipment according to the RSRP corresponding to each of the beams.
The beam selection method according to claim 1, wherein the base station determines the service beam of the user equipment according to the RSRP corresponding to each of the beams, including:

The base station acquires a first beam from the respective beams, where the first beam is a beam with the strongest RSRP among the beams;

In a case where the first beam is the wide beam, the base station determines the first beam as a service beam of the user equipment; or

In a case where the first beam is the narrow beam, the base station acquires a second beam, and if the RSRP difference between the second beam and the first beam is less than or equal to a first threshold, The wide beam is determined to be a service beam of the user equipment; or

In the case that the first beam is the narrow beam, the base station acquires a second beam, and if the RSRP difference between the second beam and the first beam is greater than a first threshold, the first The beam is determined to be a serving beam of the user equipment, wherein the second beam is a beam with a strong RSRP in each of the narrow beams.
The beam selection method according to claim 2, wherein after the base station determines the service beam of the user equipment according to the RSRP corresponding to the respective beams, the method further includes:

Where the serving beam of the user equipment is the narrow beam, the base station determines the multiplexable beam of the user equipment as all other narrow beams,

The multiplexable beam of the user equipment refers to scheduling the service beam on the determined service beam. When the user equipment is used, the other time-frequency resources can be used to schedule other user equipments to interfere with the data transmission of the user equipment without exceeding a predetermined threshold.
The beam selection method according to claim 1, wherein the base station determines the service beam of the user equipment according to the RSRP corresponding to each of the beams, including:

The base station acquires a first beam from the respective beams, where the first beam is a beam with the strongest RSRP among the beams;

The base station determines the first beam as a service beam of the user equipment.
The beam selection method according to claim 4, wherein after the base station determines the first beam as the service beam of the user equipment, the method includes:

In the case that the first beam is the narrow beam, the base station determines, as the user equipment, the beam of the other narrow beam with the RSRP difference of the first beam being less than or equal to the second threshold. Using beams,

The multiplexable beam of the user equipment refers to data transmission that can be used to schedule other user equipments on the same time-frequency resource when the user equipment is scheduled on the determined service beam. The interference does not exceed the beam of the predetermined threshold.
The beam selection method according to claim 1, wherein the base station determines the service beam of the user equipment according to the RSRP corresponding to each of the beams, including:

The base station acquires a first beam from the respective beams, where the first beam is a beam with the strongest RSRP among the beams;

In a case where the first beam is the wide beam, the base station acquires a second beam, if an RSRP difference between the second beam and the wide beam is smaller than a third preset for the second beam a threshold, the base station determining the second beam as a service beam of the user equipment; or

In a case where the first beam is the wide beam, the base station acquires a second beam, if an RSRP difference between the second beam and the wide beam is greater than or equal to a preset for the second beam a third threshold, where the first beam is determined as a service beam of the user equipment, where The second beam is a beam with the strongest RSRP among the narrow beams; or

Where the first beam is the narrow beam, the base station determines the first beam as a serving beam of the user equipment.
The beam selection method according to claim 6, wherein after the determining, by the base station, the service beam of the user equipment according to the RSRP corresponding to the respective beams, the method further includes:

In the case that the service beam of the user equipment is the narrow beam, the base station determines, as the user equipment, a beam that is a narrow beam of the service beam and a narrower beam with a smaller RSRP difference than the fourth threshold. Reusable beam,

The multiplexable beam of the user equipment refers to data transmission that can be used to schedule other user equipments on the same time-frequency resource when the user equipment is scheduled on the determined service beam. The interference does not exceed the beam of the predetermined threshold.
The beam selection method according to any one of claims 1 to 7, wherein after the base station determines, according to the SRS, the reference signal received power RSRP corresponding to the respective beams of the user equipment, include:

The base station performs corresponding correction on the initial RSRP determined by the base station according to the downlink transmit power of the each beam;

The corrected RSRP is determined as the RSRP corresponding to each beam.
The beam selection method according to any one of claims 1 to 8, wherein after determining, by the base station, the service beam of the user equipment according to the RSRP corresponding to the respective beams, the method includes:

In the case that the service beam of the user equipment is a narrow beam, the base station configures a channel state indication reference signal CSI-RS for the user equipment;

The base station sends the CSI-RS to the user equipment by using a service beam of the user equipment, so that the user equipment performs channel feedback on the CSI-RS.
A base station, comprising:

a receiving module, configured to receive, by using an antenna of each beam, a sounding reference signal SRS of the user equipment, where each of the beams includes a wide beam and at least two narrow beams;

a determining module, configured to be connected to the receiving module, configured to respectively determine, according to the SRS, a reference signal received power RSRP corresponding to the user equipment in the respective beams;

The processing module is connected to the determining module, and is configured to determine a service beam of the user equipment according to the RSRP corresponding to each of the beams.
The base station according to claim 10, wherein the processing module is configured to:

Acquiring a first beam from the respective beams, wherein the first beam is a beam with the strongest RSRP among the beams;

And determining, in the case that the first beam is the wide beam, the first beam as a service beam of the user equipment; or

If the first beam is the narrow beam, acquiring a second beam, if the RSRP difference between the second beam and the first beam is less than or equal to a first threshold, determining the wide beam a service beam for the user equipment; or,

In the case that the first beam is the narrow beam, the base station acquires a second beam, and if the RSRP difference between the second beam and the first beam is greater than a first threshold, the first The beam is determined to be a serving beam of the user equipment, wherein the second beam is a beam with a strong RSRP in each of the narrow beams.
The base station according to claim 11, wherein the processing module is further configured to:

Where the service beam of the user equipment is the narrow beam, the multiplexable beam of the user equipment is determined as all other narrow beams,

The multiplexable beam of the user equipment refers to data transmission that can be used to schedule other user equipments on the same time-frequency resource when the user equipment is scheduled on the determined service beam. The interference does not exceed the beam of the predetermined threshold.
The base station according to claim 10, wherein the processing module is configured to:

Acquiring a first beam from the respective beams, wherein the first beam is a beam with the strongest RSRP among the beams;

Determining the first beam as a serving beam of the user equipment.
The base station according to claim 13, wherein the processing module is further configured to:

And determining, in the case that the first beam is the narrow beam, a beam that is less than or equal to a second threshold of an RSRP difference between the other narrow beams and the first beam is a multiplexable beam of the user equipment,

The multiplexable beam of the user equipment refers to data transmission that can be used to schedule other user equipments on the same time-frequency resource when the user equipment is scheduled on the determined service beam. The interference does not exceed the beam of the predetermined threshold.
The base station according to claim 10, wherein the processing module is configured to:

Acquiring a first beam from the respective beams, wherein the first beam is a beam with the strongest RSRP among the beams;

If the first beam is the wide beam, acquiring a second beam, if an RSRP difference between the second beam and the wide beam is smaller than a third threshold preset for the second beam, Determining the second beam as a service beam of the user equipment; or

In a case where the first beam is the wide beam, the base station acquires a second beam, if an RSRP difference between the second beam and the wide beam is greater than or equal to a preset for the second beam a third threshold, where the first beam is determined as a service beam of the user equipment, where the second beam is a beam with the strongest RSRP among the narrow beams; or

Where the first beam is the narrow beam, the first beam is determined to be a serving beam of the user equipment.
The base station according to claim 15, wherein the processing module is further configured to:

Determining, in the case that the service beam of the user equipment is the narrow beam, a beam having a narrower beam as a service beam and a narrower RSRP in the other narrow beams is less than or equal to a fourth threshold. Reusable beam of the device,

The multiplexable beam of the user equipment refers to data transmission that can be used to schedule other user equipments on the same time-frequency resource when the user equipment is scheduled on the determined service beam. The interference does not exceed the beam of the predetermined threshold.
The base station according to any one of claims 10-16, further comprising:

a correction module, configured to be connected to the determining module and the processing module, configured to perform corresponding correction on the initial RSRP determined by the base station according to the downlink transmit power of the each beam, and to determine the corrected RSRP as The RSRP corresponding to each beam.
The base station according to any one of claims 10-17, further comprising:

a configuration module, configured to be connected to the processing module, configured to configure a channel state indication reference signal CSI-RS for the user equipment if the service beam of the user equipment is a narrow beam;

The sending module is connected to the configuration module, and is configured to send the CSI-RS to the user equipment by using a service beam of the user equipment, so that the user equipment performs channel feedback on the CSI-RS.