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CN116134749B - Antenna control method and device - Google Patents

Antenna control method and device Download PDF

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Publication number
CN116134749B
CN116134749B CN202080104571.3A CN202080104571A CN116134749B CN 116134749 B CN116134749 B CN 116134749B CN 202080104571 A CN202080104571 A CN 202080104571A CN 116134749 B CN116134749 B CN 116134749B
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users
environment
network device
current communication
limited
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CN116134749A (en
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何波辉
胥恒
李建
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

The embodiment of the application discloses an antenna control method and device, which relate to the technical field of communication and can flexibly adjust a weight matrix according to the communication requirements in the current communication environment so as to provide better communication capability. The specific scheme is as follows: the network equipment determines a weight matrix of the antenna array according to the current communication environment; and the network equipment controls the antenna array to communicate with users in the coverage area of the network equipment according to the weight matrix.

Description

Antenna control method and device
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to an antenna control method and device.
Background
With the development of communication technology, multi-antenna technology is widely used because it provides more excellent communication capability. Among them, in a network device using a large-scale multiple-input multiple-output (massive MIMO) technology, more antennas than the conventional number can be provided, and thus the communication capability that it can provide is particularly excellent.
It should be appreciated that when a network device transmits multiple data streams simultaneously, orthogonality between the individual data streams needs to be ensured in order to reduce mutual interference between the individual data streams. In addition, the network device needs to increase its transmission power as much as possible in the linear region of the corresponding device when transmitting multiple data streams, so as to improve the communication performance. The network device may control the working state of each antenna in the antenna array through the weight matrix, so as to achieve the purpose of controlling orthogonality and transmitting power.
However, in order to increase the transmit power, it is generally necessary to adjust weights corresponding to different antennas in the network device, which may result in a decrease in orthogonality between data streams. If orthogonality between the data streams is to be ensured, then it is not guaranteed that each antenna is capable of full power (or near full power) transmission.
Disclosure of Invention
The embodiment of the application provides an antenna control method and device, which can flexibly adjust a weight matrix according to the communication requirement in the current communication environment so as to provide better communication capability.
In order to achieve the above purpose, the embodiment of the application adopts the following technical scheme:
In a first aspect, an antenna control method is provided, where the method is applied to a network device, and an antenna array is disposed in the network device; the method comprises the following steps: the network equipment determines a weight matrix of the antenna array according to the current communication environment; and the network equipment controls the antenna array to communicate with users in the coverage area of the network equipment according to the weight matrix.
Based on this scheme, the network device can adaptively adjust signal transmission of the antenna array provided therein according to the state of the current communication environment, so that more excellent communication capability can be provided. The network device may control the antenna array by a weight matrix, where each weight in the weight matrix may correspond to an element in the antenna array. When the requirements for interference control are higher in the communication environment, the network device may adjust the weight matrix to a state where orthogonality can be better controlled. When the requirements for power control are higher in a communication environment, the network device may adjust the weight matrix to a state where the transmit power can be controlled higher. Thereby enabling adaptive adjustment according to the communication requirements in the current communication environment.
In one possible design, where the current communication environment is power limited, the network device determines a weight matrix for the antenna array based on the current communication environment, comprising: the network device determines a weight matrix for the antenna array based on the normalized eigenvector beamforming NEBF. Based on the scheme, a specific weight matrix determination scheme is provided. For example, if the current communication environment power is limited, the transmit power of the antenna matrix may be increased by NEBF to provide better communication capability.
In one possible design, the current communication environment is interference limited, and the network device determines a weight matrix of the antenna array according to the current communication environment, including: the network device determines a weight matrix for the antenna array based on the power limited eigenvector beamforming PEBF. Based on this scheme, a further specific weight matrix determination scheme is proposed. For example, if the interference of the current communication environment is limited, orthogonality between the signal streams sent by the vibrators in the antenna matrix can be improved through PEBF so as to provide better communication capability.
In one possible design, before the network device determines the weight matrix of the antenna array according to the current communication environment, the method further includes: the network device obtains an environmental parameter, and the network device determines that the current communication environment is limited in interference or limited in power according to the environmental parameter. Based on the scheme, a specific method for acquiring the current communication environment as interference limited or power limited is provided. For example, the communication requirements of the current communication environment may be determined by acquiring an environment parameter and based on the environment parameter.
In one possible design, the environmental parameter includes a number of users of a first user group, wherein the first user group is a set of some or all of the users within the coverage area of the network device; the network device determining that the current communication environment is interference limited or power limited according to the environment parameter comprises: when the number of the users is larger than a first threshold value, the network equipment determines that the current communication environment is an interference limited environment; when the number of users is less than the first threshold, the network device determines that the current communication environment is a power limited environment. Based on this scheme, a specific example of determining the current communication demand according to the environmental parameter is provided. In this example, the network device may determine that the current communication environment is interference limited or power limited based on the number of users in the first group of users (e.g., the group of users in the first RBG). For example, the first threshold is 1. When the number of users in the first user group is 1, the current RBG only needs to perform single-user scheduling, that is, in the environment, the communication quality can be improved by improving the transmitting power. The environment may be a power limited environment. Correspondingly, when the number of users in the first user group is greater than 1, the environment may be an interference limited environment.
In one possible design, the environment parameters include modulation and coding schemes MCSs of different users in a first user group, where the first user group is a set of some or all of the users within the coverage area of the network device; the network device determining that the current communication environment is interference limited or power limited according to the environment parameter comprises: when the MCS mean value corresponding to the first user group is larger than a second threshold value, the network equipment determines that the current communication environment is a power limited environment; when the MCS average value corresponding to the first user group is smaller than the second threshold, the network device determines that the current communication environment is an interference limited environment. Based on this approach, yet another specific example of determining current communication needs from environmental parameters is provided. In this example, the network device may determine that the current communication environment is interference limited or power limited based on a mean value of MCS correspondence for each user in the first user group (e.g., the user group of users in the first RBG). For example, when the MCS average in the first user group is greater than the second threshold, then the environment may be a power limited environment. Correspondingly, when the MCS average value in the first user group is smaller than the second threshold value, the environment may be an interference limited environment. It should be noted that, in this example, only the MCS average value is used as a reference for description, and in other implementations, other communication related parameters may be determined according to the signal-to-noise ratio reported by each user to determine that the current environment is limited in interference or limited in power.
In one possible design, the environmental parameter includes a number of users of a first user group, and modulation and coding schemes MCSs of different users in the first user group, where the first user group is a set of some or all of the users within a coverage area of the network device; the network device determining that the current communication environment is interference limited or power limited according to the environment parameter comprises: when the number of users is smaller than a third threshold value, the network equipment determines that the current communication environment is a power limited environment; when the number of users is larger than the third threshold value and the MCS mean value corresponding to the first user group is larger than the fourth threshold value, the network equipment determines that the current communication environment is a power limited environment; when the number of users is greater than the third threshold and the MCS average is less than the fourth threshold, the network device determines that the current communication environment is an interference limited environment. Based on this approach, yet another specific example of determining current communication needs from environmental parameters is provided. In this example, the network device may determine that the current communication environment is interference limited or power limited according to the average value corresponding to the MCS of each user in the first user group (e.g., the user group formed by the users in the first RBG) and the number of users in the first user group.
In one possible design, the first user group is specifically a set of users covered in a resource block group RBG corresponding to the network device; or the first user is in particular a set of users covered by the network device in one transmission interval TTI. Based on the scheme, a specific division mode of the first user group is provided. For example, users in one RBG may be used as the first user group, and users in one TTI may be used as the first user group. Of course, in other embodiments, the users in one RB may also be used as the first user group. The embodiment of the application does not limit the division granularity corresponding to the first user group.
In a second aspect, an antenna control apparatus is provided and applied to a network device, where an antenna array is disposed in the network device; the device comprises: a determination unit, a control unit; the determining unit is used for determining a weight matrix of the antenna array according to the current communication environment; the control unit is used for controlling the antenna array to communicate with users in the coverage area of the network equipment according to the weight matrix.
In one possible design, the current communication environment power is limited, and the control unit is configured to determine the weight matrix of the antenna array according to normalized eigenvector beamforming NEBF.
In one possible design, the current communication environment is interference limited, and the control unit is configured to determine the weight matrix of the antenna array according to power limited eigenvector beamforming PEBF.
In one possible design, the apparatus further comprises: the acquisition unit is used for acquiring the environment parameters, and the determination unit is also used for determining that the current communication environment is limited in interference or limited in power according to the environment parameters.
In one possible design, the environmental parameter includes a number of users of a first user group, wherein the first user group is a set of some or all of the users within the coverage area of the network device; the determining unit is further configured to determine that the current communication environment is an interference limited environment when the number of users is greater than a first threshold; the determining unit is further configured to determine that the current communication environment is a power limited environment when the number of users is smaller than the first threshold.
In one possible design, the environment parameters include modulation and coding schemes MCSs of different users in a first user group, where the first user group is a set of some or all of the users within the coverage area of the network device; the determining unit is further configured to determine that the current communication environment is a power limited environment when the MCS average value corresponding to the first user group is greater than a second threshold; the determining unit is further configured to determine that the current communication environment is an interference limited environment when the MCS average value corresponding to the first user group is smaller than the second threshold.
In one possible design, the environmental parameter includes a number of users of a first user group, and modulation and coding schemes MCSs of different users in the first user group, where the first user group is a set of some or all of the users within a coverage area of the network device; the determining unit is further configured to determine that the current communication environment is a power limited environment when the number of users is smaller than a third threshold; the determining unit is further configured to determine that the current communication environment is a power limited environment when the number of users is greater than the third threshold and an MCS average value corresponding to the first user group is greater than a fourth threshold; the determining unit is further configured to determine that the current communication environment is an interference limited environment when the number of users is greater than the third threshold and the MCS average is less than the fourth threshold.
In one possible design, the first user group is specifically a set of users covered in a resource block group RBG corresponding to the network device; or the first user is in particular a set of users covered by the network device in one transmission interval TTI.
In a third aspect, a network device is provided that includes one or more processors and one or more memories; the one or more memories coupled to the one or more processors, the one or more memories storing computer instructions; the computer instructions, when executed by the one or more processors, cause the network device to perform the antenna control method of any of the first aspect and its possible designs.
In a fourth aspect, a system on a chip is provided, the chip comprising processing circuitry and an interface; the processing circuit is operative to recall from a storage medium and to run a computer program stored in the storage medium to perform the antenna control method as claimed in any one of the first aspect and its possible designs.
In a fifth aspect, there is provided a computer readable storage medium comprising computer instructions which, when run, perform the antenna control method of any of the first aspect and its possible designs.
In a sixth aspect, there is provided a computer program product for, when run on a computer, causing the computer to perform the antenna control method according to any one of the first aspect and its possible designs.
It will be appreciated that the antenna control apparatus according to the second aspect of the present invention, the network device according to the third aspect of the present invention, the chip system according to the fourth aspect of the present invention, the computer-readable storage medium according to the fifth aspect of the present invention, and the computer program product according to the sixth aspect of the present invention are all configured to perform the corresponding method of the present invention, and therefore, the advantages achieved by the method are referred to as the advantages in the corresponding method of the present invention, and are not repeated herein.
Drawings
Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application;
Fig. 2 is a schematic flow chart of an antenna control method according to an embodiment of the present application;
fig. 3 is a flowchart of another antenna control method according to an embodiment of the present application;
Fig. 4 is a flowchart of another antenna control method according to an embodiment of the present application;
fig. 5 is a schematic block diagram of an antenna control device according to an embodiment of the present application;
fig. 6 is a schematic block diagram of a network device according to an embodiment of the present application;
Fig. 7 is a schematic block diagram of a chip system according to an embodiment of the present application.
Detailed Description
Currently, in a network device adopting massi ve MIMO technology, a large-scale antenna array can be formed by setting a plurality of antennas to perform joint receiving (or transmitting) tuning on uplink (or downlink) signals. Compared with the traditional MIMO technology, the antenna array formed by more antennas is arranged in the network equipment, so that the single-user link performance can be greatly improved, and the space multiplexing capability of multiple users can be improved. Meanwhile, due to the fact that the number of the antennas is large, beam shapes of different positions can be distinguished more finely in the vertical dimension, and therefore the space coverage capability of the network equipment transmitting signals can be improved remarkably.
When transmitting or receiving signals using massive MIMO, orthogonality between different beams and transmission power need to be controlled, thereby realizing communication based on different beams. For example, an antenna array on a network device made up of multiple antennas may control the antennas in the antenna array to operate at different amplitudes and/or phases through a weight matrix so that the antenna array can transmit (or receive) information in different beams.
Currently, in some scenarios, the transmit power of each physical antenna in the antenna array may be adjusted to a normalized value, such as all adjusted to a maximum transmit power, by adjusting the weight matrix, so as to achieve maximum utilization of the transmit power by the antenna array. In the present application, this method may also be referred to as normalized eigenvector beamforming (normalized eigenvector beamforming, NEBF).
For example, an antenna array includes N PTx antennas, each antenna generates a beam including N RB Resource Blocks (RBs), each resource block includes N user,j users, the number of streams included in the beam corresponding to the user is L, and the antenna array performs downlink data transmission through a physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH) for example. The normalization processing method for the weight corresponding to the flow in each wave beam by adopting NEBF can refer to the following formula: Wherein, Normalized weights for beams with number of streams i,Is the original weight of the beam with the number of streams of l. In this scheme, the normalization factor may be madeThe normalization scheme of the weight matrix can be obtained: When the antenna array is adjusted according to the weight matrix obtained by the formula, different antennas in the antenna array can all work under the same higher transmitting power.
However, since the weights of different antennas are adjusted, the power normalization with NEBF results in a disruption of orthogonality between different streams.
In other scenarios, the orthogonality before each physical antenna in the antenna array may be ensured by adjusting the weight matrix, thereby implementing the relative independence of the different antennas when working. In the present application, this method may also be referred to as power limited eigenvector beamforming (power-limited eigenvector beamforming, PEBF).
For example, the antenna array further includes N PTx antennas, each antenna generates a beam including N RB Resource Blocks (RBs), each resource block includes N user,j users, the number of streams included in the beam corresponding to the user is 7, and the antenna array performs downlink data transmission through a physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH) for example. When PEBF is adopted to determine the weights corresponding to different streams, the normalization factor a can be obtained according to the following formula: the normalization factor is then determined from a=max { a 0,...,An }. Thereby obtaining the weight normalization results corresponding to different streams: when the antenna array is adjusted according to the weight matrix obtained by the formula, orthogonality among different antennas in the antenna array can be better ensured.
However, since the weights of the different antennas are adjusted, when the working states of the different antennas are adjusted by PEBF, the different antennas can work at different transmitting powers, so that the situation that the transmitting powers of part of the antennas are lower is inevitably generated.
In order to solve the above-mentioned problems, an embodiment of the present application provides an antenna control method, which can adaptively adjust different antennas according to PEBF or NEBF according to a current communication environment, so that a network device can provide better communication capability according to the current communication environment. For example, in some implementations, when the communication environment has a high requirement for signal interference, the network device may control the weight of the corresponding antenna according to PEBF to improve the orthogonality of the corresponding antenna. In other implementations, when the communication environment has low requirements for signal interference, the weight of the corresponding antenna is controlled according to NEBF, so as to increase the transmitting power of the corresponding antenna.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic diagram of a communication system 100 according to an embodiment of the application is shown. As shown in fig. 1, the communication system 100 may include a network device 110 and a terminal 120. It should be noted that, in the communication system 100, terminals other than 120 may be included, for example, a terminal 121 as shown in fig. 1 may be included in the communication system 100. The embodiment of the present application does not limit the number of terminals included in the communication system 100. For example, the terminal (may also be referred to as a terminal device) in the embodiments of the present application may be a User Equipment (UE), a mobile phone, a tablet computer, a desktop, a laptop, a handheld computer, a notebook, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a Personal Digital Assistant (PDA), an augmented reality (augmented reality, AR), a Virtual Reality (VR) device, a media player, and other electronic devices with communication capabilities, and the embodiment of the present application is not limited to the specific form of the device.
In the communication system 100, the network device 110 may be a base station in a fifth generation mobile communication technology (5th generation mobile networks,5G) supporting a massive MIMO technology. It should be appreciated that in other embodiments, the network device 110 may also be a third generation mobile communication technology (3th generation mobile communication technology,3G) or fourth generation mobile communication technology (4th generation mobile communication technology,4G) base station, or other communication device capable of supporting massive MIMO technology. Illustratively, the network device 110 is a 5G base station. The network device 110 can provide a 5G New Radio (NR) for 5G communication with other devices, such as terminal 120 and/or terminal 121. The network device 110 may illustratively communicate with different terminals within its coverage area via a beam (e.g., a narrow beam). In the network device 110, a baseband module may be provided to implement power normalization adjustment for different antennas. In some implementations, the baseband module may be configured to determine a size relationship between an average value of modulation and coding schemes (modulation and coding scheme, MCS) corresponding to different terminals and a second threshold in units of Resource Block Groups (RBGs), and adjust antennas generating beams included in the different RBGs accordingly. For example, the antennas corresponding to beams with MCS mean values greater than the second threshold are adjusted according to NEBF. For another example, the antennas corresponding to beams with MCS averages less than the second threshold are adjusted according to PEBF. In other implementations, the baseband module may be configured to perform power normalization adjustment for the corresponding antenna according to the number of users in the corresponding RBG.
In some embodiments, the network device 110 may include a transmitter chain and a receiver chain, each of which may include a plurality of components (e.g., processors, modulators, multiplexers, encoders, demultiplexers, antennas, etc.) associated with signal transmission and reception, as will be appreciated by those of ordinary skill in the art.
The antenna control method provided in the embodiment of the present application can be used in the communication system 100 shown in fig. 1.
The antenna control method provided by the embodiment of the application is described in detail below. Taking network equipment as an example, antenna power normalization adjustment is performed by taking RBG as granularity. It should be noted that, in other embodiments, the network device may also perform the normalized adjustment of the antenna power at other granularity, for example, the normalized adjustment of the antenna power at granularity of Transmission TIME INTERVAL (TTI). The embodiment of the application does not limit the adjustment granularity of power normalization.
Fig. 2 is a schematic flow chart of an antenna control method according to an embodiment of the present application. As shown in fig. 2, the method may include S201-S203.
S201, the network equipment determines the number of users in the first RBG.
In combination with the above description, the network device may send out a beam in a corresponding direction through an antenna array disposed on the network device when communicating with a user in its coverage area. For example, the beam may be a beam having a narrower bandwidth than a conventional beam, and the beam may have a stronger signal power for good data communication with users in the corresponding direction.
It should be understood that different beams may divide the coverage of a network device into a plurality of different areas in the spatial domain (e.g., simply referred to as the spatial domain), and that on each beam, the network device may transmit data over different frequencies. In the present application, the frequency domain coverage of the network device may be divided into different RBs, and a plurality of RBs may constitute an RB group (i.e., RBG). In different implementations, different RBGs may include different numbers of RBs. For example, one RBG may include 4 RBs.
In this example, the network device may determine the number of users in each of the different RBGs. For example, the network device may determine the number of users in a first RBG, where the first RBG may be any of a plurality of RBGs. The network device may determine according to which method (e.g., NEBF or PEBF in the above description) to control the weight of the antenna corresponding to the first RBG based on the number of access users in the first RBG.
When the number of users is less than or equal to the first threshold, the following S202 is performed. When the number of users is greater than the first threshold, the following S203 is performed. Wherein the first threshold may be an integer greater than or equal to 1. The first threshold value is 1, for example, will be described below. That is, when the user in the first RBG is 1, the network equipment performs the following S202. When the number of users in the first RBG is greater than 1, the network equipment performs the following S203. In the embodiment of the present application, when the number of users in the first RBG is 1, it may also be called that the network device needs to perform Single User (SU) scheduling in the first RBG. When the number of users in the first RBG is greater than 1, it may also be referred to as network equipment requiring Multi User (MU) scheduling in the first RBG.
And S202, the network equipment performs normalization adjustment on the antenna corresponding to the first RBG according to NEBF.
In this example, when the network device needs to perform single-user scheduling, power normalization adjustment is performed on the antenna corresponding to the first RBG according to NEBF.
It should be appreciated that when only one subscriber is present in the first RBG, it means that another beam communicating with the subscriber is not present in the RBG, i.e., there is no interference problem of the two beams. Therefore, in this example, when the network device determines to perform single user scheduling, the power of the antenna corresponding to the RBG may be normalized and adjusted, for example, by adopting NEBF to perform power normalization and adjustment on the antenna, so that the transmitting power corresponding to the RBG may reach the configured full power, thereby improving the communication quality in the RBG.
And S203, the network equipment performs normalization adjustment on the antenna corresponding to the first RBG according to PEBF.
In this example, when the network device needs to perform multi-user scheduling, power normalization adjustment is performed on the antenna corresponding to the first RBG according to PEBF.
It should be appreciated that when there are 2 or more users in a first RBG, then there may be two or more signals in the RBG that interact with different users. That is, in this case, the requirement for interference in the RBG is high (in the present application, the case where such interference requirement is high is referred to as interference limitation), and therefore, orthogonality of different antennas in the RBG needs to be ensured. For example, the network device may perform power normalization adjustment on the antenna corresponding to the first RBG according to PEBF, so that signals in the first RBG may not interfere with each other, and improve communication quality in the first RBG.
Based on the scheme shown in fig. 2, the network device may determine, according to the number of users in different granularities (for example, granularity of RBGs), whether the environments corresponding to different RBGs are interference-limited environments, and adjust the weights of the corresponding antennas accordingly. The network equipment can adaptively adjust the weight matrix of different antennas according to the difference of communication environments, so as to improve the communication quality in each RBG.
It should be noted that, the method shown in fig. 2 may be triggered automatically according to a preset period, or may be triggered according to a received instruction. The embodiment of the application does not limit the triggering mechanism of the scheme.
In combination with the above description of fig. 2, the present application further provides an antenna control method, which can further refine power normalization control of an antenna in a scenario of multi-user scheduling. For example, please refer to fig. 3, which is a flowchart illustrating another antenna control method according to an embodiment of the present application. As shown in fig. 3, the method may include S301-S305.
S301, the network equipment determines that multi-user scheduling needs to be carried out on the first RBG.
In this example, the network device may determine that multi-user scheduling is required for the first RBG according to the number of corresponding users in the first RBG. Illustratively, the method may be similar to the method described in S201 above.
S302, the network equipment determines an MCS mean value corresponding to the first RBG.
S303, the network equipment judges the magnitude relation between the MCS mean value and the second threshold value.
If the MCS mean is greater than the second threshold, S304 is performed. If the MCS mean value is greater than the second threshold, S305 is performed.
And S304, the network equipment performs normalization adjustment on the antenna corresponding to the first RBG according to NEBF.
And S305, the network equipment performs normalization adjustment on the antenna corresponding to the first RBG according to PEBF.
It should be appreciated that when there are multiple users in the first RBG that need to be scheduled at the same time, the network device may determine, according to the requirements of different user communications for interference, to use NEBF or PEBF to perform power normalization adjustment on the antenna corresponding to the first RBG.
As an example, the network device may determine, according to the MCS average value reported by all users in the first RBG, a requirement of communication of different users in the RBG for interference. For example, the network device may obtain a signal-to-noise ratio (Signal Noise Ratio, SNR) reported by each user in the first RBG, determine an MCS corresponding to each user, and obtain an MCS average for different users in the RBG according to the MCS average. The network device may determine whether the communication environment corresponding to the current RBG is an interference limited environment according to the MCS average. For example, the network device may determine whether the corresponding communication environment is an interference limited environment based on a magnitude relationship between the MCS average and a second threshold (e.g., AVERAGEMCSTHLD). In the embodiment of the present application, the MCS average may be referred to as AVERAGEMCS.
For example, when AVERAGEMCS is greater than AVERAGEMCSTHLD, then less interference in the environment is indicated at this point, and therefore power is more easily limited. Therefore, the network device may perform power normalization adjustment on the antenna corresponding to the first RBG according to PEBF, so as to ensure orthogonality of the corresponding antenna.
When AVERAGEMCS is less than AVERAGEMCSTHLD, this indicates that there is more interference in the environment at this time, and therefore interference is more easily limited. Therefore, the network device may perform power normalization adjustment on the antenna corresponding to the first RBG according to NEBF, so as to ensure full power transmission of the corresponding antenna.
In the above example, the MCS average value is taken as a basis for whether or not the environment is an interference limited environment. In other implementations, the network device may also determine whether the current environment is an interference limited environment based on other parameters. For example, the network device may determine whether the current environment is an interference limited environment according to the variance and/or covariance and/or size relationship between the standard deviation and the preset parameter of the SNR reported by the corresponding user of the first RB 6. As another example, the network device may determine whether the current environment is an interference limited environment according to other communication parameters of the user to which the first RBG corresponds, such as a power limited level, etc. The embodiments of the present application are not limited in this regard.
In order to enable those skilled in the art to more clearly understand the technical solution provided by the present application, an exemplary description of the antenna control method provided by the embodiment of the present application is provided below with reference to the method shown in fig. 2 and the method shown in fig. 3.
Referring to fig. 4, another antenna control method according to an embodiment of the present application is provided. As shown in fig. 4, the method may include S401-S406.
S401, the network equipment determines the number of users in the first RBG.
S402, the network equipment determines that SU scheduling or MU scheduling is required according to the number of users.
When the first RB6 needs SU scheduling, S405 follows. When the first RBG needs MU scheduling, S406 is performed.
S403, the network equipment acquires an MCS mean value corresponding to the user in MU scheduling.
S404, the network equipment determines whether the current environment is a power limited environment according to the MCS mean value.
If the current environment is a power limited environment, the following S405 is performed. If the current environment is not a power limited environment, the following S406 is performed.
And S405, the network equipment performs normalization adjustment on the antenna corresponding to the first RBG according to NEBF.
And S406, the network equipment performs normalization adjustment on the antenna corresponding to the first RBG according to PEBF.
It should be understood that the specific implementation method of each step in this example can correspond to the steps of the method shown in fig. 2 or fig. 3, and the corresponding implementation measures are similar, which will not be repeated herein.
It should be noted that, in other embodiments of the present application, based on the antenna control method provided in fig. 2, fig. 3, or fig. 4, the present application may also realize maximum utilization of power by transferring idle power to other RBs. Illustratively, the above-described S406 shown in fig. 4 is performed as an example. After the network device performs power normalization processing on the antenna corresponding to the first RBG according to PEBF, an RBG adjusted by PEBF is used for a certain antenna, and if there is excess power, the excess power adjustment can be distributed to an RB (or RBG) adjusted by NEBF corresponding to the antenna (or other antennas). Thus, the power up allocated to the RB (or RBG) corresponding to NEBF can be effectively increased, so that each antenna NEBF can transmit near full power. Thereby increasing the overall transmit power of the network device to provide better communication capabilities.
The above description mainly describes the scheme provided by the embodiment of the present application from the perspective of the network device. To achieve the above functions, it includes corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will 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 implemented as hardware or computer software driven 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.
The embodiment of the application can divide the functional modules of the network equipment according to the method example, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.
Referring to fig. 5, a schematic block diagram of an antenna control apparatus 500 according to an embodiment of the present application is shown. The antenna control apparatus 500 may be disposed in the network device 110 shown in fig. 1, and is used to implement any one of the antenna control methods provided in the embodiments of the present application. For example, an antenna array may also be provided in the network device 110.
As shown in fig. 5, the apparatus may comprise a determination unit 501, a control unit 502.
Wherein, the determining unit 501 is configured to determine a weight matrix of the antenna array according to a current communication environment; the control unit 502 is configured to control the antenna array to communicate with users in the coverage area of the network device according to the weight matrix.
In one possible design, the current communication environment power is limited, and the control unit 502 is configured to determine the weight matrix of the antenna array according to Normalized Eigenvector Beamforming (NEBF).
In one possible design, the current communication environment is interference limited, and the control unit 502 is configured to determine the weight matrix of the antenna array according to power limited eigenvector beamforming (PEBF).
In one possible design, the apparatus further comprises: an obtaining unit 503, where the obtaining unit 503 is configured to obtain an environmental parameter, and the determining unit 501 is further configured to determine that the current communication environment is interference limited or power limited according to the environmental parameter.
In one possible design, the environmental parameter includes a number of users of a first user group, wherein the first user group is a set of some or all of the users within the coverage area of the network device; the determining unit 501 is further configured to determine that the current communication environment is an interference limited environment when the number of users is greater than a first threshold; the determining unit 501 is further configured to determine that the current communication environment is a power limited environment when the number of users is less than the first threshold.
In one possible design, the environmental parameters include Modulation and Coding Schemes (MCSs) for different users in a first user group, wherein the first user group is a set of some or all of the users within the coverage area of the network device; the determining unit 501 is further configured to determine that the current communication environment is a power limited environment when the MCS average value corresponding to the first user group is greater than a second threshold; the determining unit 501 is further configured to determine that the current communication environment is an interference limited environment when the MCS average value corresponding to the first user group is less than the second threshold.
In one possible design, the environmental parameter includes a number of users of a first user group, and Modulation and Coding Schemes (MCSs) of different users in the first user group, wherein the first user group is a set of some or all of the users within a coverage area of the network device; the determining unit 501 is further configured to determine that the current communication environment is a power limited environment when the number of users is less than a third threshold; the determining unit 501 is further configured to determine that the current communication environment is a power limited environment when the number of users is greater than the third threshold and the MCS average value corresponding to the first user group is greater than a fourth threshold; the determining unit 501 is further configured to determine that the current communication environment is an interference limited environment when the number of users is greater than the third threshold and the MCS average is less than the fourth threshold.
In one possible design, the first user group is specifically a set of users covered in one resource block group (RB 6) corresponding to the network device; or the first user is in particular a set of users covered by the network device in one transmission interval (TTI).
It should be noted that, all relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein. As an alternative, but not necessarily, the antenna control device provided by the embodiment of the present application may further include a processing module or a control module for supporting the above-mentioned determining unit 501 and/or the control unit 502 and/or the obtaining unit 503 to perform the corresponding functions, if necessary.
Fig. 6 shows a schematic diagram of the components of a network device 600. The network device 600 may include: a processor 601 and a memory 602. The memory 602 is used to store computer-executable instructions. For example, in some embodiments, the processor 601, when executing the instructions stored in the memory 602, may cause the network device 600 to perform the antenna control method as shown in fig. 2 or fig. 3 or fig. 4, as well as other operations that the network device needs to perform.
It should be noted that, all relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.
Fig. 7 shows a schematic diagram of the composition of a chip system 700. The chip system 700 may include: a processor 701 and a communication interface 702 for supporting the network device to implement the functions referred to in the above embodiments. In one possible design, chip system 700 may further include memory to hold the program instructions and data necessary for the network device. The chip system 700 may be formed of a chip or may include a chip and other discrete devices.
It should be noted that, all relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.
The functions or acts or operations or steps and the like in the embodiments described above may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (solid statedisk, SSD)), etc.
Although the application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the application. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (16)

1. An antenna control method is characterized in that the method is applied to network equipment, and an antenna array is arranged in the network equipment; the method comprises the following steps:
The network equipment determines a weight matrix of the antenna array according to the current communication environment;
the network equipment controls the antenna array to communicate with users in the coverage area of the network equipment according to the weight matrix;
If the interference of the current communication environment is limited, the network device determines a weight matrix of the antenna array according to the current communication environment, including:
the network device determines a weight matrix for the antenna array based on the power limited eigenvector beamforming PEBF.
2. The method of claim 1, wherein, if the current communication environment power is limited,
The network device determines a weight matrix of the antenna array according to the current communication environment, and the method comprises the following steps:
The network device determines a weight matrix for the antenna array according to normalized eigenvector beamforming NEBF.
3. The method according to claim 1 or 2, wherein before the network device determines the weight matrix of the antenna array according to the current communication environment, the method further comprises:
the network device obtains the environmental parameters,
And the network equipment determines that the current communication environment is limited in interference or limited in power according to the environment parameters.
4. A method according to claim 3, wherein the environmental parameter comprises a number of users of a first user group, wherein the first user group is a collection of some or all of the users within the coverage area of the network device;
The network device determines that the current communication environment is limited in interference or limited in power according to the environment parameters, and comprises:
When the number of users is larger than a first threshold value, the network equipment determines that the current communication environment is an interference limited environment;
and when the number of the users is smaller than the first threshold value, the network equipment determines that the current communication environment is a power limited environment.
5. A method according to claim 3, wherein the environmental parameters comprise modulation and coding schemes, MCSs, of different users in a first group of users, wherein the first group of users is a set of some or all of the users within the coverage area of the network device;
The network device determines that the current communication environment is limited in interference or limited in power according to the environment parameters, and comprises:
when the MCS mean value corresponding to the first user group is larger than a second threshold value, the network equipment determines that the current communication environment is a power limited environment;
and when the MCS mean value corresponding to the first user group is smaller than the second threshold value, the network equipment determines that the current communication environment is an interference limited environment.
6. A method according to claim 3, wherein the environmental parameters include the number of users of a first group of users, and the modulation and coding schemes MCS for different users in the first group of users, wherein the first group of users is a set of some or all of the users within the coverage area of the network device;
The network device determines that the current communication environment is limited in interference or limited in power according to the environment parameters, and comprises:
when the number of users is smaller than a third threshold value, the network equipment determines that the current communication environment is a power limited environment;
When the number of users is greater than the third threshold and the MCS mean value corresponding to the first user group is greater than a fourth threshold, the network device determines that the current communication environment is a power limited environment;
and when the number of the users is larger than the third threshold and the MCS mean value is smaller than the fourth threshold, the network equipment determines that the current communication environment is an interference limited environment.
7. The method according to claim 4, wherein the first user group is specifically a set of users covered in one resource block group RBG corresponding to the network device; or alternatively
The first user is in particular a set of users covered by the network device in one transmission interval TTI.
8. An antenna control device is characterized by being applied to network equipment, wherein an antenna array is arranged in the network equipment; the device comprises: a determination unit, a control unit;
the determining unit is used for determining a weight matrix of the antenna array according to the current communication environment;
the control unit is used for controlling the antenna array to communicate with users in the coverage area of the network equipment according to the weight matrix;
If the current communication environment is interference limited,
The control unit is configured to determine a weight matrix of the antenna array according to the power limited eigenvector beamforming PEBF.
9. The apparatus of claim 8, wherein, if the current communication environment power is limited,
The control unit is configured to determine a weight matrix of the antenna array according to normalized eigenvector beamforming NEBF.
10. The apparatus according to claim 8 or 9, characterized in that the apparatus further comprises: an acquisition unit configured to acquire the data of the object,
The acquisition unit is used for acquiring environmental parameters,
The determining unit is further configured to determine, according to the environment parameter, that the current communication environment is interference limited or power limited.
11. The apparatus of claim 10, wherein the environmental parameter comprises a number of users of a first user group, wherein the first user group is a collection of some or all of the users within the coverage area of the network device;
The determining unit is further configured to determine that the current communication environment is an interference limited environment when the number of users is greater than a first threshold;
And the determining unit is further configured to determine that the current communication environment is a power limited environment when the number of users is smaller than the first threshold.
12. The apparatus of claim 10, wherein the environmental parameters comprise modulation and coding schemes, MCSs, for different users in a first group of users, wherein the first group of users is a set of some or all of the users within the coverage area of the network device;
The determining unit is further configured to determine that the current communication environment is a power limited environment when the MCS average value corresponding to the first user group is greater than a second threshold;
The determining unit is further configured to determine that the current communication environment is an interference limited environment when the MCS average value corresponding to the first user group is smaller than the second threshold.
13. The apparatus of claim 10, wherein the environmental parameters include a number of users of a first user group and modulation and coding schemes, MCSs, for different users in the first user group, wherein the first user group is a set of some or all of the users within a coverage area of the network device;
the determining unit is further configured to determine that the current communication environment is a power limited environment when the number of users is less than a third threshold;
The determining unit is further configured to determine that the current communication environment is a power limited environment when the number of users is greater than the third threshold and an MCS average value corresponding to the first user group is greater than a fourth threshold;
and the determining unit is further configured to determine that the current communication environment is an interference limited environment when the number of users is greater than the third threshold and the MCS average is smaller than the fourth threshold.
14. The apparatus of claim 11, wherein the first user group is specifically a set of users covered in one resource block group RBG corresponding to the network device; or alternatively
The first user is in particular a set of users covered by the network device in one transmission interval TTI.
15. A network device, characterized in that, the network device includes one or more processors and one or more memories; the one or more memories coupled to the one or more processors, the one or more memories storing computer instructions;
The computer instructions, when executed by the one or more processors, cause the network device to perform the antenna control method of any of claims 1-7.
16. A chip system, wherein the chip comprises a processing circuit and an interface; the processing circuit is configured to call up and execute a computer program stored in a storage medium from the storage medium to perform the antenna control method according to any one of claims 1-7.
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