WO2023040796A1

WO2023040796A1 - Channel phase deviation prediction method and related device

Info

Publication number: WO2023040796A1
Application number: PCT/CN2022/118323
Authority: WO
Inventors: 龚政委; 谭维锴; 韩小江; 吴文谦
Original assignee: 华为技术有限公司
Priority date: 2021-09-17
Filing date: 2022-09-13
Publication date: 2023-03-23
Also published as: CN115833969A

Abstract

Disclosed in embodiments of the present application are a channel phase deviation prediction method and a related device, which are applied in the field of communications and can be implemented by a base station. The method specifically comprises: a base station determines a main lobe device from among a plurality of user equipments, then sends a test signal to the main lobe device, and receives a feedback signal sent from the main lobe device, such that the channel phase deviation of the base station can be predicted on the basis of the feedback signal. Because the main lobe device is located in a main lobe direction of the antenna radiation of the base station, and the precision of the amplitude-phase consistency corresponding to the main lobe direction of the antenna radiation is high, estimation based on the main lobe device can increase the accuracy of terminal air interface measurement-based phase deviation estimation, thereby accurately estimating the phase deviation between channels.

Description

A channel phase deviation prediction method and related equipment

This application claims the priority of the Chinese patent application with the application number 202111094352.4 and the title of the invention "A Channel Phase Deviation Prediction Method and Related Equipment" filed with the China Patent Office on September 17, 2021, the entire contents of which are incorporated by reference in In this application.

technical field

The embodiments of the present application relate to the communication field, and in particular, to a channel phase deviation prediction method and related equipment.

Background technique

In wireless communication systems, multiple-in multiple-out (MIMO) technology has always been an effective means to increase capacity. MIMO technology makes spectral efficiency exponentially improved. On the other hand, the requirements for hardware are also increased accordingly. .

In theory, only when the phases between multiple end-to-end channels connected to different antennas are completely consistent can MIMO obtain the limit theoretical gain. Correspondingly, the inconsistency of the phases between channels directly leads to the decline of MIMO performance. Therefore, MIMO-enabled hardware devices should try to ensure phase consistency between channels. However, due to the different RF devices between multiple end-to-end channels connected to different antennas, the temperature and environment during the working process cause different device changes, resulting in inconsistent phases between channels. In order to ensure the phase consistency between channels, First, the phase deviation between multiple channels must be estimated.

In order to estimate the phase deviation between multiple channels, a channel calibration scheme based on terminal air interface measurement can be used, that is, the baseband unit sends the test signal to different terminals, namely user equipment, through the air interface through the radio frequency unit, feeder and antenna The precoding vector and/or channel quality and other measurement information are fed back, and the feedback information includes channel phase deviation information, thereby estimating the phase deviation among multiple channels.

However, the accurate measurement based on the terminal air interface needs to be based on a reasonable assumption, that is, due to the different geographical locations of the user equipment, it is necessary to assume that the amplitude-phase consistency of the corresponding transmitting-side antennas of the user equipment in different locations is ideal, and the amplitude-phase consistency It shows that the amplitude and/or phase of different antennas are completely consistent with the change of angle, but there is a deviation in the amplitude and phase consistency in the actual situation, so the estimated phase deviation between multiple channels is not accurate enough.

Contents of the invention

The embodiment of the present application provides a channel phase deviation prediction method and related equipment for accurately estimating the phase deviation between channels. The embodiment of the present application also provides a corresponding communication device, a computer-readable storage medium, a chip system and a computer program products, etc.

The first aspect of the present application provides a channel phase deviation prediction method, the method includes: the base station determines the main lobe device from multiple user equipments, the main lobe device is located in the main lobe direction of the antenna radiation of the base station; the base station sends a test signal to the main lobe The device; the base station receives the feedback signal sent by the main lobe device; the base station predicts the channel phase deviation of the base station based on the feedback signal.

In this application, the main lobe is the largest radiation beam located on the antenna pattern. The origin of the main lobe is related to the antenna directivity. The antenna directivity refers to the relative value of the antenna radiation field at the same distance from the far zone. The relationship between the spatial direction, the antenna directivity is represented by the antenna pattern, because the antenna pattern is generally petal-shaped, so it is also called the lobe pattern, and the beam within the first zero radiation direction line on both sides of the maximum radiation direction is called main lobe. The main lobe device is the user equipment located in the direction of the main lobe radiated by the antenna of the base station.

In this application, after the base station sends a test signal to the main-lobe device, the main-lobe device passes back the measurement information such as the precoding matrix indicator (precoding matrix indicator, PMI) or channel quality indicator (channel quality indicator, CQI) of the air interface of the base station, and receives The received signal includes the channel phase deviation information, so that the channel phase deviation of the base station can be estimated and predicted.

In the first aspect, the base station determines the main lobe device from multiple user equipments, then sends a test signal to the main lobe device, and receives the feedback signal sent by the main lobe device, and can predict the channel phase deviation of the base station based on the feedback signal, because the main lobe The lobe device is located in the main lobe direction of the antenna radiation of the base station, and the accuracy of the amplitude-phase consistency corresponding to the main lobe direction of the antenna radiation is relatively high. Therefore, estimation based on the main lobe device can improve the estimation accuracy of the phase deviation based on the terminal air interface measurement, thereby accurately The estimated phase deviation between channels.

In a possible implementation of the first aspect, the above step: the base station determining the main lobe device from multiple user equipments includes: the base station based on timing advances of multiple user equipments and reference signals of multiple user equipments in multiple cells The received power and/or the received power of reference signals of multiple user equipments in the cell determine the main lobe equipment.

In this possible implementation, the method for determining the main lobe device includes based on the timing advances of multiple user equipments, the reference signal received power of multiple user equipments in multiple cells, and/or the reference signals of multiple user equipments in this cell One or a combination of the three methods of receiving power improves the feasibility of the scheme.

In a possible implementation of the first aspect, the above step: the base station determines the main lobe device based on the timing advances of multiple user equipments includes: the base station obtains the working parameters of the antenna, and the working parameters include antenna height, vertical plane inclination and side The maximum angle of lobe expansion; the base station determines the upper side lobe angle and the lower side lobe angle according to the vertical plane inclination angle and the maximum side lobe expansion angle; the base station determines the upper side lobe distance and the lower side lobe according to the antenna height, upper side lobe angle and lower side lobe angle Distance; the base station determines the target timing advance level according to the upper side lobe distance and the lower side lobe distance; the base station determines the main lobe equipment from multiple user equipments, and the timing advance level of the main lobe equipment is the target timing advance level.

In this possible implementation manner, the base station can determine the main lobe device based on the timing advances of multiple user equipments, which improves the feasibility of the solution.

In a possible implementation manner of the first aspect, the above step: the base station determines the main lobe device based on the reference signal received power of multiple user equipments in multiple cells includes: the base station sends a control signal to the multiple user equipments, and the control signal is used to Instruct multiple user equipments to report when they are the main lobe equipment, the reference signal received power difference of the main lobe equipment is greater than the preset first threshold value, and the reference signal received power difference is based on the reference signal received power of the current cell and the neighbor cell The received power of the reference signal is determined; the base station determines that the reported multiple user equipments are the main lobe equipment.

In this possible implementation manner, the base station can determine the main lobe device based on the received power of reference signals of multiple user equipments in multiple cells, which improves the feasibility of the solution.

In a possible implementation manner of the first aspect, the first threshold value is determined based on the antenna gain value of the own cell corresponding to the maximum side lobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum side lobe expansion angle.

In this possible implementation, when the base station determines the main lobe device based on the reference signal received power of multiple user equipments in multiple cells, the first threshold value is based on the antenna gain value of the cell corresponding to the maximum angle of side lobe expansion and The antenna gain value of the adjacent cell corresponding to the maximum side lobe expansion angle is determined, which improves the feasibility of the solution.

In a possible implementation of the first aspect, the first threshold value is based on the antenna gain value of the own cell corresponding to the maximum side lobe expansion angle, the antenna gain value of the neighboring cell corresponding to the maximum side lobe expansion angle, the antenna gain value of the current cell The transmission power value and the transmission power value of the neighboring cells are determined.

In this possible implementation, when the base station determines the main lobe device based on the reference signal received power of multiple user equipments in multiple cells, the first threshold value is based on the antenna gain value of the cell corresponding to the maximum angle of side lobe expansion, The antenna gain value of the adjacent cell corresponding to the maximum side lobe expansion angle, the transmit power value of the current cell, and the transmit power value of the adjacent cell are determined, which improves the feasibility of the solution.

In a possible implementation manner of the first aspect, the above step: the base station determines the main lobe device based on the reference signal received power of multiple user equipments in the cell includes: the base station receives sounding signals sent by multiple user equipments; The signal obtains the reference signal received power between the uplink channels of multiple user equipments; the base station determines the main lobe device from multiple user equipments, and the maximum value of the difference value of the reference signal received power between the uplink channels of the main lobe device is less than the preset second threshold.

In this possible implementation manner, the base station can determine the main lobe device based on the received reference signal power of multiple user equipments in the cell, which improves the feasibility of the solution.

In a possible implementation of the first aspect, the second threshold value is based on the maximum value of the difference between the antenna gain value of the channel corresponding to the maximum sidelobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle Sure.

In this possible implementation, when the base station determines the main lobe device based on the received power of reference signals of multiple user equipments in the cell, the second threshold value is based on the antenna gain value and side lobe value of the channel corresponding to the maximum angle of side lobe expansion. The maximum value of the antenna gain value difference of the adjacent cell corresponding to the maximum lobe expansion angle is determined. Improve the feasibility of the program.

A second aspect of the present application provides a communications device configured to execute the method in the foregoing first aspect or any possible implementation manner of the first aspect. Specifically, the base station includes modules or units for performing the method in the above first aspect or any possible implementation manner of the first aspect, such as: a determining unit, a sending unit, a receiving unit, and a predicting unit.

The third aspect of the present application provides a communication device, the communication device includes a processor and a memory, the processor is coupled to the memory, and the memory is used to store programs or instructions executed by the processor, or to store input data required by the processor to run instructions, Or store the data generated after the processor executes the instruction, and when the program or the instruction is executed by the processor, the communication device executes the method of the above-mentioned first aspect or any possible implementation manner of the first aspect. Optionally, the communication device further includes an interface, and the processor is coupled to the interface. Interfaces are used to communicate with other devices. The interface can be a transceiver or an input-output interface. The interface can be, for example, an interface circuit.

The fourth aspect of the present application provides a computer-readable storage medium storing instructions, and when the instructions are run on the computer, the method according to the above-mentioned first aspect or any possible implementation manner of the first aspect is executed.

The fifth aspect of the present application provides a chip system, the chip system includes at least one processor and an interface, the interface is used to receive data and/or signals, and the at least one processor is used to support the computer device to implement the above first aspect or the first Functions involved in any possible implementation of the aspect. In a possible design, the system-on-a-chip may further include a memory, and the memory is used for storing necessary program instructions and data of the computer device. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

The sixth aspect of the present application provides a computer program product storing a computer program. When the computer program is executed, the first aspect or any one of the possible implementation methods of the first aspect can be realized.

In the embodiment of the present application, the base station determines the main-lobe device from multiple user equipments, then sends a test signal to the main-lobe device, and receives the feedback signal sent by the main-lobe device, so that the channel phase deviation of the base station can be predicted based on the feedback signal, because The main lobe device is located in the main lobe direction of the antenna radiation of the base station, and the accuracy of the amplitude-phase consistency corresponding to the main lobe direction of the antenna radiation is high. Therefore, estimation based on the main lobe device can improve the phase deviation estimation accuracy based on the terminal air interface measurement, thereby Accurately estimate the phase deviation between channels.

Description of drawings

FIG. 1 is a structural diagram of a base station;

FIG. 2 is a schematic diagram of a channel calibration scheme based on terminal air interface measurement provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of an embodiment of a channel phase deviation prediction method provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of amplitude and phase of different antennas provided in the embodiment of the present application;

FIG. 5 is another schematic diagram of different antennas provided in the embodiment of the present application;

FIG. 6 is a schematic diagram of a base station antenna propagation coverage radius provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of the amplitude and phase of the vertical region provided by the embodiment of the present application;

FIG. 8 is a schematic diagram of the amplitude and phase of the horizontal region provided by the embodiment of the present application;

FIG. 9 is a schematic diagram of an embodiment of a communication device provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of another embodiment of a communication device provided by an embodiment of the present application.

Detailed ways

Embodiments of the present application are described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Those of ordinary skill in the art know that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

The embodiment of the present application provides a channel phase deviation prediction method and related equipment for accurately estimating the phase deviation between channels. The embodiment of the present application also provides a corresponding communication device, a computer-readable storage medium, a chip system and a computer program products, etc. Each will be described in detail below.

Please refer to Figure 1. The base station can be a gNodeB (5G base station) based on (5th generation mobile communication technology, 5G). The base station includes a baseband processing unit, a radio frequency unit and an antenna. The baseband processing unit can be an indoor baseband processing unit (building base band unite , BBU), the radio frequency unit can be a radio remote unit (radio remote unit, RRU), and the communication between the baseband processing unit and the radio frequency unit is completed through multiple optical fiber connections. Each optical fiber can be understood as a baseband processing unit and radio frequency The communication channel between the units, the radio frequency unit and the antenna are connected through multiple cables to complete the communication, each cable can be understood as a communication channel between the radio frequency unit and the antenna, the optical fiber and the cable correspond, and the baseband processing unit An antenna is driven by an optical fiber, a radio frequency unit and a cable, that is, one antenna corresponds to one channel, and there are multiple channels between the baseband processing unit and the radio frequency unit.

Please refer to Figure 2. When the channel calibration scheme based on terminal air interface measurement is used to estimate the phase deviation between multiple channels, the baseband unit sends the test signal to different terminals through the radio frequency unit, feeder and antenna, that is, user equipment, user equipment Feedback of measurement information such as precoding matrix indicator (PMI) or channel quality indicator (CQI) through the air interface of the base station can be expressed as channel state information (CSI) feedback, and the received received signal can be expressed as for:

and further converted to:

Where s is the test signal, _θi is the phase deviation information between channels, and thus the phase deviation between multiple channels is estimated

The following describes the channel phase deviation prediction method in the embodiment of the present application in combination with the above-mentioned base station architecture and the channel calibration scheme based on the terminal air interface measurement. Please refer to FIG. 3. An embodiment of the channel phase deviation prediction method in the embodiment of the present application includes:

301. The base station determines a main lobe device from multiple user equipments.

Before predicting the channel phase deviation based on the channel calibration scheme based on terminal air interface measurement, please refer to Figure 4. This scheme needs to assume that the amplitude and phase consistency of the transmitting antenna corresponding to the user equipment at different positions is ideal to ensure the accuracy of the estimation, where , the amplitude-phase consistency means that the amplitude and/or phase of different antennas are completely consistent with the change of the angle, please refer to Figure 5, the amplitude-phase consistency of the side-lobe equipment is quite different, and the amplitude-phase consistency of the main-lobe equipment If the consistency difference is small, it is necessary to determine the main lobe device from multiple user equipments first, and realize the channel calibration scheme based on terminal air interface measurement only through the main lobe device, where the main lobe device is the main lobe direction of the antenna radiation located at the base station user equipment.

302. The base station sends a test signal to the main lobe device.

303. The base station receives the feedback signal sent by the main lobe device.

304. The base station predicts the channel phase deviation of the base station based on the feedback signal.

After determining the main lobe device, the base station can implement a channel calibration scheme based on the terminal air interface measurement based on the main lobe device. Specifically, the base station sends a test signal s to the main lobe device, and the main lobe device measures the PMI or CQI of the air interface of the base station. The feedback of information can be expressed as channel state information (CSI) feedback, and the received received signal can be expressed as:

and further converted to

Where s is the test signal, θ _i is the phase deviation information between channels, and then the main lobe device returns the feedback signal to the base station, and the feedback signal includes the phase deviation information θ _i between channels, so that the base station can estimate the phase between multiple channels deviation

In the embodiment of the present application, there are many ways for the base station to determine the main lobe device from multiple user equipments, which are described below:

1. The base station determines the main lobe device based on the timing advances of multiple user equipments:

Please refer to Figure 6, the base station obtains the working parameters of the antenna, which can be obtained specifically by the BBU of the base station, where the working parameters of the antenna include the antenna height h _BS , the vertical plane inclination angle

and sidelobe spread maximum angle

Then determine the distance range corresponding to the main lobe device, where the user equipment closer to the base station is in the lower side lobe of the vertical plane, and the user equipment farther away from the base station is in the upper side lobe of the vertical plane, then the maximum can be extended according to the vertical plane inclination and side lobe The angle determines the upper sidelobe angle and the lower sidelobe angle, where the upper sidelobe angle

lower side lobe angle

Then the base station determines the upper sidelobe distance and the lower sidelobe distance according to the antenna height, upper sidelobe angle and lower sidelobe angle, where the upper sidelobe distance

lower side lobe distance

After the base station obtains the upper sidelobe distance and the lower sidelobe distance, the target timing advance level can be determined according to the upper sidelobe distance and the lower sidelobe distance, specifically, according to the timing advance (timing advancement, TA) of the user equipment The relationship with the propagation distance determines the target timing advance level. If the propagation distance is less than or equal to d _down , then determine the TA level of the user equipment as TA _down , and if the propagation distance is greater than d _up , then determine the TA level of the user equipment as TA _up , if the propagation distance is less than or equal to d _up and greater than d _down , then determine the TA level of the user equipment as the target timing advance level, and finally the base station can determine the timing advance level from multiple user equipments as the target timing advance level The level user equipment is the main lobe equipment.

Please refer to FIG. 7 , the user equipment whose timing advance level is the target timing advance level is located in the vertical main lobe area, and the accuracy of the amplitude-phase consistency is high, and the accuracy of the phase deviation between channels estimated based on the main lobe equipment is also improved.

In the embodiment of the present application, the propagation distance of the user equipment can be determined based on the antenna parameters of the base station and the TA measurement value of the user equipment, and the main and side lobe characteristics of the user equipment can be determined based on the propagation distance level, so that the main lobe device can be determined .

2. The base station determines the main lobe device based on the reference signal received power of multiple user equipments in multiple cells:

The base station sends a control signal to multiple user equipments. The control signal is used to instruct multiple user equipments to report when the main lobe equipment is the main lobe equipment. The power difference is determined based on the reference signal receiving power (reference signal receiving power, RSRP) of the current cell and the reference signal receiving power of the neighboring cell.

Specifically, the first threshold value may be preset. When each user equipment receives the control signal, each user equipment will perform corresponding measurement to determine the reference signal received power difference, wherein the reference signal received power difference The value is the absolute value of the reference signal received power of the local cell minus the reference signal received power of the neighboring cell, that is, the reference signal received power difference RSRP _SN =|RSRP _Serving -RSRP _Neighbor |, RSRP _Serving is the reference signal received power of the local cell , RSRP _Neighbor is the reference signal received power of the neighboring cell. When the RSRP _SN of the terminal device is greater than the first threshold RSRP _thre , the terminal device is the main lobe device and reports to the base station.

Further, the first threshold value can be determined in various ways, for example, the first threshold value is determined based on the antenna gain value of the own cell corresponding to the maximum side lobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum side lobe expansion angle , at this time RSRP _thre = |A(θ _Side ) _Serving -A(θ _Side ) _Neighbor |, where A(θ _Side ) _Serving and A(θ _Side ) _Neighbor are the local cell corresponding to the side lobe angle θ _Side of the local cell The antenna gain of the antenna gain and the antenna gain value of the adjacent cell, the first threshold value can also be based on the antenna gain value of the current cell corresponding to the maximum side lobe expansion angle, the antenna gain value of the adjacent cell corresponding to the maximum side lobe expansion angle, the antenna gain value of the current cell The transmission power value and the transmission power value of the neighboring cell are determined, and at this time RSRP _thre =|Pow _Serving A(θ _Side ) _Serving -Pow _Neighbor A(θ _Side ) _Neighbor |, where Pow _Serving and Pow Neighbor represent the current cell and Pow _Neighbor respectively The transmit power value of the neighboring cell. The acquisition method of θ _Side can be the same as that in method 1

are obtained in the same way.

In this embodiment of the application, based on the RSRP difference between the current cell and the adjacent cell, it can be determined whether the user equipment is located in the overlapping area of multiple cells, and the user equipment in the overlapping area is a side lobe device, otherwise it is a main lobe device , the threshold value is determined according to the difference between the antenna gain and the transmission power of the cell and the adjacent cell in the corresponding side lobe angle or direction, and the main lobe device can be determined by better utilizing the directivity difference of the antenna.

3. The reference signal received power of multiple user equipments in the cell determines the main lobe equipment:

Specifically, the second threshold value may be preset, and the base station receives sounding signals sent by multiple user equipments, where the sounding signals may be uplink channel sounding reference signals (sounding reference signals, SRS), and the base station may perform sounding reference signals based on the sounding signals. Measure and obtain the reference signal received power between the uplink channels of multiple user equipments, and its value is RSRP _A,n , and then determine the difference value RSRP _A,mn of the reference signal received power between the uplink channels of multiple user equipments, where RSRP _{A ,mn} = |RSRP _A,m -RSRP _A,n |, that is, the absolute value of the difference between the reference signal received power of any two uplink channels, if the max{RSRP _A,mn } of the user equipment is less than the second threshold RSRP _A,Thre , it is determined that the user equipment is the main lobe equipment.

Further, the second threshold value may be determined based on the maximum value of the difference between the antenna gain value of the channel corresponding to the maximum side lobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum side lobe expansion angle, that is, RSRP _A,Thre =max {|A(θ _side ) _m -Aθsiden, where θside is the side lobe angle corresponding to the cell, which can be determined by the normal direction of the cell and the side lobe angle range. Please refer to FIG. 8 , due to the inconsistency of the amplitude and phase between the antennas corresponding to the multiple channels, the greater the angle region of the side lobe, the larger the gain difference among the antennas. The acquisition method of θ _Side can be the same as that in method 1

are obtained in the same way.

In the embodiment of the present application, the main lobe device may be determined based on the difference level of uplink RSRP among multiple channels of the current cell.

It should be noted that the above three ways of determining the main lobe device can be combined arbitrarily, so that the main lobe device can be determined more accurately, thereby improving the estimation accuracy of the phase deviation between channels. The embodiment of the present application makes full use of the characteristic that the antennas corresponding to the sidelobe devices have a large difference in gain caused by the inconsistency of the amplitude and phase between the antennas corresponding to the multi-channels, eliminates the sidelobe devices, and determines the main lobe device.

As shown in FIG. 9, an embodiment of a communication device 900 provided in this embodiment of the present application includes:

The determining unit 901 is configured to determine a main lobe device from a plurality of user equipments, and the main lobe device is located in the main lobe direction of antenna radiation of the base station; the determining unit 901 may execute step 301 in the above method embodiment.

The sending unit 902 is configured to send a test signal to the main lobe device; the sending unit 902 can execute step 302 in the above method embodiment.

The receiving unit 903 is configured to receive the feedback signal sent by the main lobe device; the receiving unit 903 may execute step 303 in the above method embodiment.

The predicting unit 904 is configured to predict the channel phase deviation of the base station based on the feedback signal. The predicting unit 904 may execute step 304 in the foregoing method embodiments.

In the embodiment of the present application, the determination unit 901 determines the main lobe device from multiple user equipments, and then the sending unit 902 sends a test signal to the main lobe device, and the receiving unit 903 receives the feedback signal sent by the main lobe device, and the prediction unit 904 can be based on The feedback signal predicts the channel phase deviation of the base station. Because the main lobe device is located in the main lobe direction of the antenna radiation of the base station, the accuracy of the amplitude-phase consistency corresponding to the main lobe direction of the antenna radiation is relatively high. Therefore, estimation based on the main lobe device can improve the The phase deviation estimation accuracy measured by the air interface of the terminal can accurately estimate the phase deviation between channels.

Optionally, the determining unit 901 is specifically configured to determine the main lobe based on the timing advances of multiple user equipments, the reference signal received power of multiple user equipments in multiple cells, and/or the reference signal received power of multiple user equipments in this cell equipment.

Optionally, the determination unit 901 is also specifically configured to obtain the working parameters of the antenna, the working parameters include the antenna height, the vertical plane inclination and the maximum side lobe expansion angle; determine the upper side lobe angle and the lower side lobe angle according to the vertical plane inclination and the side lobe maximum expansion angle Sidelobe angle; determine the upper sidelobe distance and lower sidelobe distance according to the antenna height, upper sidelobe angle and lower sidelobe angle; determine the target timing advance level according to the upper sidelobe distance and lower sidelobe distance; from multiple user equipment The main lobe device is determined in , and the timing advance level of the main lobe device is the target timing advance level.

Optionally, the determining unit 901 is further configured to send a control signal to multiple user equipments, the control signal is used to instruct multiple user equipments to report when they are the main lobe equipment, and the reference signal received power difference of the main lobe equipment is greater than the preset The first threshold value of the reference signal received power difference is determined based on the reference signal received power of the current cell and the reference signal received power of the neighboring cell; the plurality of user equipments determined to be reported are the main lobe equipment.

Optionally, the first threshold value is determined based on the antenna gain value of the current cell corresponding to the maximum side lobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum side lobe expansion angle.

Optionally, the first threshold value is based on the antenna gain value of the own cell corresponding to the maximum side lobe expansion angle, the antenna gain value of the neighboring cell corresponding to the maximum side lobe expansion angle, the transmission power value of the current cell, and the transmission power value of the neighboring cell The value is determined.

Optionally, the determining unit 901 is further configured to receive sounding signals sent by multiple user equipments; obtain reference signal received power between uplink channels of multiple user equipments based on the sounding signals; determine the main lobe device from multiple user equipments, The maximum value of the difference value of the received power of the reference signal between the uplink channels of the main lobe device is smaller than the preset second threshold value.

Optionally, the second threshold value is determined based on the maximum value of the difference between the antenna gain value of the channel corresponding to the maximum side lobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum side lobe expansion angle.

Referring to FIG. 10 , it is a schematic diagram of a communication device 1000 provided by an embodiment of the present application, which is used to implement operations of the base station in the above embodiments. As shown in FIG. 10 , the communication device 1000 includes: a processor 1001 and an interface 1003 , and the processor 1001 is coupled to the interface 1003 . The interface 1003 is used to communicate with other devices. The interface 1003 may be a transceiver or an input-output interface. Interface 1003 may be, for example, an interface circuit. Optionally, the communication device 1000 further includes a memory 1002, the processor 1001 is coupled to the memory 1002, and the memory 1002 is used to store the instructions executed by the processor 1001 or store the input data required by the processor 1001 to run the instructions or store the processor 1001 to run Data generated after the command.

The method performed by the base station in the above embodiments may be implemented by the processor 1001 calling a program stored in a memory (which may be the memory 1002 of the multi-antenna device, or may be an external memory). That is, the base station may include a processor 1001, and the processor 1001 executes the method performed by the base station in the above method embodiments by calling a program in a memory. The processor here may be an integrated circuit with signal processing capabilities, such as a CPU. A base station may be implemented by one or more integrated circuits configured to implement the above methods. For example: one or more ASICs, or one or more microprocessors DSP, or one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. Alternatively, the above implementation manners may be combined.

Specifically, the functions/implementation process of the determining unit 901 and the predicting unit 904 in FIG. 9 may be realized by calling the computer-executable instructions stored in the memory 1002 by the processor 1001 in the communication device 1000 shown in FIG. 10 . The function/implementation process of the sending unit 902 and the receiving unit 903 in FIG. 9 can be realized by the processor 1001 in the communication device 1000 shown in FIG. The function/implementation process of the unit 902 and the receiving unit 903 can be realized through the interface 1003 in the communication device 1000 shown in FIG. The program instructions in the memory are implemented with the driver interface 1003 .

When the communication apparatus 1000 is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiment. The terminal device chip receives information from other modules in the terminal device (such as radio frequency modules or antennas), and the information is from other terminal devices or network devices; or, the terminal device chip sends information to other modules in the terminal device (such as radio frequency modules) or antenna) to send information, which is sent by a terminal device to other terminal devices or network devices.

When the communication apparatus 1000 is a chip applied to a network device, the network device chip implements the functions of the network device in the above method embodiments. The network device chip receives information from other modules in the network device (such as radio frequency modules or antennas), and the information is from other network devices or terminal devices; or, the network device chip sends information to other modules in the network device (such as radio frequency modules) or antenna) to send information, which is sent by network devices to other network devices or terminal devices.

In another embodiment of the present application, there is also provided a computer-readable storage medium, in which computer-executable instructions are stored, and when at least one processor of the device executes the computer-executable instructions, the device executes the above implementation The channel phase deviation prediction method described in the example.

In another embodiment of the present application, a computer program product is also provided, the computer program product includes computer-executable instructions, and the computer-executable instructions are stored in a computer-readable storage medium; The computer-executable instruction is read by reading the storage medium, and at least one processor executes the computer-executable instruction so that the device executes the channel phase deviation prediction method described in the foregoing embodiments.

In another embodiment of the present application, a chip system is also provided. The chip system includes at least one processor and an interface, the interface is used to receive data and/or signals, and the at least one processor is used to support the implementation of the above-mentioned embodiment. Described channel phase deviation prediction method. In a possible design, the system-on-a-chip may further include a memory, and the memory is used for storing necessary program instructions and data of the computer device. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), magnetic disk or optical disc, etc., which can store program codes. .

Claims

A channel phase deviation prediction method, characterized in that, comprising:

The base station determines a main lobe device from a plurality of user equipments, and the main lobe device is located in a main lobe direction of antenna radiation of the base station;

The base station sends a test signal to the main lobe device;

The base station receives a feedback signal sent by the main lobe device;

The base station predicts a channel phase deviation of the base station based on the feedback signal.
The method according to claim 1, wherein the base station determining the main lobe device from multiple user equipments comprises:

The base station determines the main lobe device based on the timing advances of the multiple user equipments, the reference signal received power of the multiple user equipments in multiple cells, and/or the reference signal received power of the multiple user equipments in the current cell .
The method according to claim 2, wherein the base station determining the main lobe device based on the timing advances of the plurality of user equipments comprises:

The base station acquires working parameters of the antenna, where the working parameters include antenna height, vertical plane inclination and maximum angle of side lobe expansion;

The base station determines an upper side lobe angle and a lower side lobe angle according to the vertical plane inclination angle and the maximum side lobe expansion angle;

The base station determines an upper side lobe distance and a lower side lobe distance according to the antenna height, the upper side lobe angle, and the lower side lobe angle;

The base station determines a target timing advance level according to the upper sidelobe distance and the lower sidelobe distance;

The base station determines main-lobe equipment from the plurality of user equipments, and the timing advance level of the main-lobe equipment is the target timing advance level.
The method according to claim 2, wherein the base station determines the main lobe device based on the reference signal received power of the plurality of user equipments in multiple cells includes:

The base station sends a control signal to the plurality of user equipments, the control signal is used to instruct the plurality of user equipments to report when they are the main lobe equipment, and the reference signal received power difference of the main lobe equipment is greater than A preset first threshold value, the reference signal received power difference is determined based on the reference signal received power of the current cell and the reference signal received power of neighboring cells;

The base station determines that the reported multiple user equipments are the main lobe equipments.
The method according to claim 4, wherein the first threshold value is determined based on the antenna gain value of the own cell corresponding to the maximum side lobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum side lobe expansion angle.
The method according to claim 4, wherein the first threshold value is based on the antenna gain value of the own cell corresponding to the maximum side lobe expansion angle, the antenna gain value of the neighboring cell corresponding to the maximum side lobe expansion angle, and the local antenna gain value corresponding to the maximum side lobe expansion angle. The transmission power value of the cell and the transmission power value of the adjacent cell are determined.
The method according to claim 2, wherein the base station determining the main lobe device based on the reference signal received power of the plurality of user equipments in the cell comprises:

receiving, by the base station, sounding signals sent by the plurality of user equipments;

The base station acquires reference signal received power between uplink channels of the plurality of user equipments based on the sounding signal;

The base station determines a main lobe device from the plurality of user equipments, and a maximum value of a difference value of reference signal received power between the uplink channels of the main lobe device is smaller than a preset second threshold value.
The method according to claim 7, wherein the second threshold value is based on the difference between the antenna gain value of the channel corresponding to the maximum side lobe expansion angle and the antenna gain value of the adjacent cell corresponding to the maximum side lobe expansion angle The maximum value is determined.
A communication device, characterized by comprising:

a determining unit, configured to determine a main lobe device from a plurality of user equipments, the main lobe device being located in the main lobe direction of the antenna radiation of the base station;

a sending unit, configured to send a test signal to the main lobe device;

a receiving unit, configured to receive a feedback signal sent by the main lobe device;

A predicting unit, configured to predict the channel phase deviation of the base station based on the feedback signal.
The apparatus according to claim 9, wherein the determining unit is specifically configured to be based on the timing advances of the multiple user equipments, the reference signal received power of the multiple user equipments in multiple cells and/or local The reference signal received power of the plurality of user equipments in the cell determines the main lobe equipment.
The device according to claim 10, wherein the determination unit is further configured to obtain the working parameters of the antenna, the working parameters include antenna height, vertical plane inclination and maximum angle of side lobe expansion; according to the Determine the upper side lobe angle and the lower side lobe angle by the vertical plane inclination angle and the maximum side lobe expansion angle; determine the upper side lobe distance and the lower side lobe distance according to the antenna height, the upper side lobe angle and the lower side lobe angle; Determine a target timing advance level according to the upper side lobe distance and the lower side lobe distance; determine a main lobe device from the plurality of user equipments, and the timing advance level of the main lobe device is the target timing advance volume level.
The apparatus according to claim 10, wherein the determining unit is further configured to send a control signal to the plurality of user equipments, the control signal is used to instruct the plurality of user equipments to be the main lobe When the device reports, the reference signal received power difference of the main lobe device is greater than the preset first threshold value, and the reference signal received power difference is based on the reference signal received power of the current cell and the reference signal received power of the neighboring cell. Power determination: determining that the multiple reported user equipments are the main lobe equipments.
The device according to claim 12, wherein the first threshold value is determined based on the antenna gain value of the own cell corresponding to the maximum side lobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum side lobe expansion angle.
The device according to claim 12, wherein the first threshold value is based on the antenna gain value of the own cell corresponding to the maximum side lobe expansion angle, the antenna gain value of the neighboring cell corresponding to the maximum side lobe expansion angle, and the local antenna gain value corresponding to the maximum side lobe expansion angle. The transmission power value of the cell and the transmission power value of the adjacent cell are determined.
The apparatus according to claim 10, wherein the determining unit is further configured to receive sounding signals sent by the plurality of user equipments; and obtain, based on the sounding signals, the communication between the uplink channels of the plurality of user equipments. Reference signal received power: determine a main lobe device from the multiple user equipments, and the maximum value of the difference value of the reference signal received power between the uplink channels of the main lobe device is smaller than a preset second threshold value.
The device according to claim 15, wherein the second threshold value is based on the difference between the antenna gain value of the channel corresponding to the maximum side lobe expansion angle and the antenna gain value of the adjacent cell corresponding to the maximum side lobe expansion angle The maximum value is determined.
A communication device, characterized by comprising:

A processor, the processor is coupled with a memory, and the memory is used to store a program or an instruction, and when the program or instruction is executed by the processor, the device performs any one of claims 1 to 8 the method described.
A computer-readable storage medium, on which instructions are stored, and when the instructions are run on a computer, the computer is made to execute the method according to any one of claims 1 to 8.
A system on a chip, characterized in that it comprises at least one processor and an interface, the interface is used to receive data and/or signals, and the at least one processor is configured to perform any one of claims 1 to 8 method described in the item.
A computer program product, on which a computer program is stored, wherein, when the computer program is executed, the method according to any one of claims 1 to 8 is realized.