A channel phase deviation prediction method and related equipment

Abstract

The embodiment of the present application discloses a channel phase deviation prediction method and related equipment, which are applied to the field of communications and can be implemented on a base station. The method specifically includes: the base station determines the main lobe device from multiple user devices, then sends a test signal to the main lobe device, and receives a feedback signal sent by the main lobe device. 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 base station antenna radiation, 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 phase deviation estimation accuracy based on the terminal air interface measurement, thereby accurately estimating the phase deviation between channels.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and in particular to a channel phase deviation prediction method and related equipment. Background Art

[0002] In wireless communication systems, multiple-in multiple-out (MIMO) technology has always been an effective means of improving capacity. MIMO technology increases spectrum efficiency exponentially, but on the other hand, the requirements for hardware are also increased accordingly.

[0003] Theoretically, MIMO can only achieve its maximum theoretical gain when the phases between multiple end-to-end channels connected to different antennas are completely consistent. Consequently, phase inconsistency between channels directly leads to a decrease in MIMO performance. Therefore, MIMO-enabled hardware must ensure phase consistency between channels. However, due to the differences in RF components between multiple end-to-end channels connected to different antennas, temperature and environmental factors can cause these components to vary during operation, leading to phase inconsistencies between channels. To ensure phase consistency between channels, it is first necessary to estimate the phase deviations between multiple channels.

[0004] In order to estimate the phase deviation between multiple channels, a channel calibration scheme based on terminal air interface measurement can be adopted. That is, the baseband unit sends the test signal through the radio frequency unit, feeder and antenna to different terminals, namely user equipment. The user equipment provides feedback through measurement information such as the air interface precoding vector and / or channel quality. The feedback information contains information about the channel phase deviation, thereby estimating the phase deviation between multiple channels.

[0005] However, 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 user devices, it is necessary to assume that the amplitude and phase consistency of the corresponding transmitting antennas of user devices in different locations is ideal. The amplitude and phase consistency indicates that the amplitude and / or phase of different antennas change with the angle and are completely consistent. However, in actual situations, there are deviations in the amplitude and phase consistency, so the estimated phase deviation between multiple channels is not accurate enough. Summary of the Invention

[0006] The embodiments of the present application provide a channel phase deviation prediction method and related equipment for accurately estimating the phase deviation between channels. The embodiments of the present application also provide corresponding communication devices, computer-readable storage media, chip systems, and computer program products.

[0007] The first aspect of the present application provides a channel phase deviation prediction method, which includes: the base station determines a main lobe device from multiple user devices, and the main lobe device is located in the main lobe direction of the base station's antenna radiation; 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 the channel phase deviation of the base station based on the feedback signal.

[0008] In this application, the main lobe is the maximum radiation beam located on the antenna pattern. The origin of the main lobe is related to the antenna directivity. Antenna directivity refers to the relationship between the relative value of the antenna radiation field and the spatial direction under the condition of the same distance in the far zone. The antenna pattern is used to represent the antenna directivity because the antenna direction Figure 1 The beam pattern is generally petal-shaped, so it is also called a lobe pattern. The beam within the first zero radiation direction line on both sides of the maximum radiation direction is called the main lobe. The main lobe device is the user equipment located in the main lobe direction of the base station antenna radiation.

[0009] In this application, after the base station sends a test signal to the main lobe device, the main lobe device feedbacks measurement information such as the precoding matrix indicator (PMI) or channel quality indicator (CQI) of the base station air interface. The received signal includes information about the channel phase deviation, so that the channel phase deviation of the base station can be estimated and predicted.

[0010] In the first aspect, the base station determines the main lobe device from multiple user devices, then sends a test signal to the main lobe device, and receives a feedback signal sent by the main lobe device. The base station can predict the channel phase deviation based on the feedback signal. Because the main lobe device is located in the main lobe direction of the base station antenna radiation, the amplitude-phase consistency corresponding to the main lobe direction of the antenna radiation is more accurate. Therefore, estimation based on the main lobe device can improve the phase deviation estimation accuracy based on the terminal air interface measurement, thereby accurately estimating the phase deviation between channels.

[0011] In a possible implementation of the first aspect, the above-mentioned step: the base station determines the main lobe device from multiple user devices includes: the base station determines the main lobe device based on the timing advance of multiple user devices, the reference signal reception power of multiple user devices in multiple cells and / or the reference signal reception power of multiple user devices in this cell.

[0012] In this possible implementation, the method for determining the main lobe device includes one or a combination of three methods based on the timing advance of multiple user devices, the reference signal reception power of multiple user devices in multiple cells, and / or the reference signal reception power of multiple user devices in this cell, thereby improving the feasibility of the solution.

[0013] In a possible implementation of the first aspect, the above steps: the base station determines the main lobe device based on the timing advance of multiple user devices, including: the base station obtains the working parameters of the antenna, the working parameters including the antenna height, the vertical plane tilt angle and the maximum sidelobe expansion angle; the base station determines the upper sidelobe angle and the lower sidelobe angle based on the vertical plane tilt angle and the maximum sidelobe expansion angle; the base station determines the upper sidelobe distance and the lower sidelobe distance based on the antenna height, the upper sidelobe angle and the lower sidelobe angle; the base station determines the target timing advance level based on the upper sidelobe distance and the lower sidelobe distance; the base station determines the main lobe device from multiple user devices, and the timing advance level of the main lobe device is the target timing advance level.

[0014] In this possible implementation, the base station can determine the main lobe device based on the timing advance of multiple user equipments, thereby improving the feasibility of the solution.

[0015] In a possible implementation of the first aspect, the above-mentioned steps: the base station determines the main lobe device based on the reference signal reception power of multiple user devices in multiple cells, including: the base station sends a control signal to multiple user devices, the control signal is used to indicate that multiple user devices are reported as main lobe devices, the reference signal reception power difference of the main lobe device is greater than a preset first threshold value, and the reference signal reception power difference is determined based on the reference signal reception power of the current cell and the reference signal reception power of the neighboring cell; the base station determines that the multiple reported user devices are main lobe devices.

[0016] In this possible implementation, the base station can determine the main lobe device based on the reference signal received power of multiple user equipments in multiple cells, thereby improving the feasibility of the solution.

[0017] In a possible implementation manner of the first aspect, the first threshold value is determined based on an antenna gain value of the current cell corresponding to the maximum sidelobe expansion angle and an antenna gain value of a neighboring cell corresponding to the maximum sidelobe expansion angle.

[0018] In this possible implementation, when the base station determines the main lobe device based on the reference signal receiving power of multiple user devices in multiple cells, the first threshold value is determined based on the antenna gain value of the current cell corresponding to the maximum sidelobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle, thereby improving the feasibility of the solution.

[0019] In a possible implementation of the first aspect, the first threshold value is determined based on the antenna gain value of the current cell corresponding to the maximum sidelobe expansion angle, the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle, the transmit power value of the current cell, and the transmit power value of the neighboring cell.

[0020] In this possible implementation, when the base station determines the main lobe device based on the reference signal receiving power of multiple user devices in multiple cells, the first threshold value is determined based on the antenna gain value of the current cell corresponding to the maximum sidelobe expansion angle, the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle, the transmission power value of the current cell and the transmission power value of the neighboring cell, thereby improving the feasibility of the solution.

[0021] In a possible implementation of the first aspect, the above-mentioned steps: the base station determines the main lobe device based on the reference signal reception power of multiple user devices in the cell, including: the base station receives the detection signals sent by multiple user devices; the base station obtains the reference signal reception power between the uplink channels of the multiple user devices based on the detection signals; the base station determines the main lobe device from the multiple user devices, and the maximum value of the difference value of the reference signal reception power between the uplink channels of the main lobe devices is less than the preset second threshold value.

[0022] In this possible implementation, the base station can determine the main lobe device based on the reference signal received power of multiple user equipments in the cell, thereby improving the feasibility of the solution.

[0023] In a possible implementation manner of the first aspect, the second threshold is determined based on a maximum value of a difference between an antenna gain value of a channel corresponding to the maximum sidelobe expansion angle and an antenna gain value of a neighboring cell corresponding to the maximum sidelobe expansion angle.

[0024] In this possible implementation, when the base station determines the main lobe device based on the reference signal received power of multiple user equipment in the local cell, the second threshold value is determined based on the maximum 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. This improves the feasibility of the solution.

[0025] In a second aspect of the present application, a communication device is provided for executing the method of the first aspect or any possible implementation of the first aspect. Specifically, the base station includes modules or units for executing the method of the first aspect or any possible implementation of the first aspect, such as: a determining unit, a sending unit, a receiving unit, and a predicting unit.

[0026] In a third aspect, the present application provides a communication device, which 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 the instructions, or to store data generated after the processor runs the instructions. When the program or instruction is executed by the processor, the communication device executes the method of the first aspect or any possible implementation of the first aspect. Optionally, the communication device also includes an interface, and the processor is coupled to the interface. The interface is 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.

[0027] In a fourth aspect, the present application provides a computer-readable storage medium storing instructions, which, when the instructions are executed on a computer, executes the method of the first aspect or any possible implementation of the first aspect.

[0028] In a fifth aspect, the present application provides a chip system, which includes at least one processor and an interface for receiving data and / or signals, and at least one processor for supporting a computer device to implement the functions involved in the first aspect or any possible implementation of the first aspect. In one possible design, the chip system may also include a memory for storing program instructions and data necessary for the computer device. The chip system may be composed of a chip or may include a chip and other discrete devices.

[0029] In a sixth aspect, the present application provides a computer program product storing a computer program, which, when executed, implements the method of the first aspect or any possible implementation of the first aspect.

[0030] In an embodiment of the present application, the base station determines the main lobe device from multiple user devices, then sends a test signal to the main lobe device, and receives a feedback signal sent by the main lobe device. The base station can predict the channel phase deviation of the base station based on the feedback signal. Because the main lobe device is located in the main lobe direction of the base station antenna radiation, the amplitude and phase consistency corresponding to the main lobe direction of the antenna radiation is more accurate. Therefore, estimation based on the main lobe device can improve the phase deviation estimation accuracy based on the terminal air interface measurement, thereby accurately estimating the phase deviation between channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a diagram of the base station architecture;

[0032] Figure 2 Schematic diagram of a channel calibration solution based on terminal air interface measurement provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of an embodiment of a channel phase deviation prediction method provided in an embodiment of the present application;

[0034] Figure 4 A schematic diagram of amplitude and phase of different antennas provided in an embodiment of the present application;

[0035] Figure 5 Another phase diagram of different antennas provided in an embodiment of the present application;

[0036] Figure 6 A schematic diagram of the base station antenna propagation coverage radius provided in an embodiment of the present application;

[0037] Figure 7 A schematic diagram of the amplitude and phase of a vertical region provided in an embodiment of the present application;

[0038] Figure 8 A schematic diagram of the amplitude and phase of a horizontal area provided in an embodiment of the present application;

[0039] Figure 9 A schematic diagram of an embodiment of a communication device provided in an embodiment of the present application;

[0040] Figure 10 A schematic diagram of another embodiment of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The following describes the embodiments of the present application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present application, rather than all the embodiments. Those skilled in the art will appreciate 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.

[0042] The terms "first," "second," and the like in the specification and claims of this application and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatus.

[0043] The present invention provides a channel phase deviation prediction method and related devices for accurately estimating the phase deviation between channels. The present invention also provides corresponding communication devices, computer-readable storage media, chip systems, and computer program products. These are described in detail below.

[0044] See also Figure 1 The base station may 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 may be a building baseband processing unit (BBU). The radio frequency unit may be a radio remote unit (RRU). The baseband processing unit and the radio frequency unit are connected via multiple optical fibers to achieve communication. Each optical fiber can be understood as a communication channel between the baseband processing unit and the radio frequency unit. The radio frequency unit and the antenna are connected via multiple cables to achieve communication. Each cable can be understood as a communication channel between the radio frequency unit and the antenna. The optical fibers and cables correspond to each other. The baseband processing unit drives one antenna through one optical fiber, one radio frequency unit, and one cable. That is, one antenna corresponds to one channel. There are multiple channels between the baseband processing unit and the radio frequency unit.

[0045] See also Figure 2 When the phase deviations between multiple channels are estimated using a channel calibration solution based on terminal air interface measurements, the baseband unit sends the test signal through the radio frequency unit, feeder, and antenna to different terminals, namely user equipment. The user equipment feedbacks measurement information such as the precoding matrix indicator (PMI) or channel quality indicator (CQI) via the base station air interface, which can be expressed as channel state information (CSI) feedback. The 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, from which the phase deviation between multiple channels is estimated

[0046] The channel phase deviation prediction method in the embodiment of the present application is described below in combination with the above-mentioned base station architecture and the channel calibration solution based on terminal air interface measurement. Figure 3 In one embodiment of the present application, a method for predicting a channel phase deviation includes:

[0047] 301. A base station determines a main lobe device from multiple user equipments.

[0048] Before predicting the channel phase deviation based on the channel calibration solution of the terminal over-the-air measurement, please refer to Figure 4This solution requires the assumption that the amplitude and phase consistency of the transmitting antennas corresponding to user equipment at different locations is ideal to ensure the accuracy of the estimation. Amplitude and phase consistency means that the amplitude and / or phase of different antennas are completely consistent with the change of angle. Please refer to Figure 5 , the amplitude and phase consistency of the sidelobe devices is relatively different, while the amplitude and phase consistency of the mainlobe devices is relatively small. It is necessary to first determine the mainlobe device from multiple user devices, and only use the mainlobe device to implement the channel calibration solution based on the terminal air interface measurement, where the mainlobe device is the user device located in the mainlobe direction of the base station antenna radiation.

[0049] 302. The base station sends a test signal to the main lobe device.

[0050] 303. The base station receives a feedback signal sent by the main lobe device.

[0051] 304. The base station predicts a channel phase deviation of the base station based on the feedback signal.

[0052] After determining the main lobe device, the base station can implement a channel calibration solution 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. The main lobe device feedbacks measurement information such as PMI or CQI through the base station air interface, which can be expressed as channel state information (CSI) feedback. The received signal can be expressed as: and further converted to Where s is the test signal, θ i The main lobe device then returns the feedback signal to the base station. The feedback signal includes the phase deviation information θ between the channels. i , so that the base station can estimate the phase deviation between multiple channels

[0053] In an embodiment of the present application, the base station determines the main lobe device from multiple user devices, then sends a test signal to the main lobe device, and receives a feedback signal sent by the main lobe device. The base station can predict the channel phase deviation of the base station based on the feedback signal. Because the main lobe device is located in the main lobe direction of the base station antenna radiation, the amplitude and phase consistency corresponding to the main lobe direction of the antenna radiation is more accurate. Therefore, estimation based on the main lobe device can improve the phase deviation estimation accuracy based on the terminal air interface measurement, thereby accurately estimating the phase deviation between channels.

[0054] In the embodiment of the present application, there are multiple ways for the base station to determine the main lobe device from multiple user equipments, which are described below respectively:

[0055] 1. The base station determines the main lobe device based on the timing advance of multiple user equipments:

[0056] See also Figure 6The base station obtains the working parameters of the antenna, which can be obtained by the BBU of the base station. The working parameters of the antenna include the antenna height h BS , vertical inclination and maximum sidelobe expansion 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. The upper side lobe angle and the lower side lobe angle can be determined based on the vertical plane tilt angle and the maximum angle of the side lobe expansion. The upper side lobe angle is Lower sidelobe angle The base station then determines the upper sidelobe distance and the lower sidelobe distance based on the antenna height, upper sidelobe angle, and lower sidelobe angle, where the upper sidelobe distance Lower sidelobe distance

[0057] 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, the target timing advance level is determined according to the relationship between the timing advancement (TA) of the user equipment and the propagation distance. If the propagation distance is less than or equal to d down , then the TA level of the user equipment is determined to be TA down , if the propagation distance is greater than d up , then the TA level of the user equipment is determined to be TA up , if the propagation distance is less than or equal to d up and greater than d down , then the TA level of the user equipment is determined to be the target timing advance level, and finally the base station can determine the user equipment with the timing advance level being the target timing advance level from multiple user equipments as the main lobe device.

[0058] See also Figure 7 , the user equipment with the target timing advance level is located in the vertical main lobe area, the accuracy of the amplitude and phase consistency is high, and the accuracy of the phase deviation between channels estimated based on the main lobe equipment is also improved.

[0059] In an embodiment of the present application, the propagation distance of the user equipment can be determined based on the parameters of the base station antenna and the TA measurement value of the user equipment, and the main sidelobe characteristics of the user equipment can be determined based on the level of the propagation distance, so that the main lobe device can be determined.

[0060] 2. The base station determines the main lobe device based on the reference signal received power of multiple user equipments in multiple cells:

[0061] The base station sends a control signal to multiple user devices, and the control signal is used to instruct multiple user devices to report when they are main lobe devices. The reference signal receiving power difference of the main lobe device is greater than a preset first threshold value. The reference signal receiving power difference is determined based on the reference signal receiving power (RSRP) of the current cell and the reference signal receiving power of the neighboring cell.

[0062] Specifically, a first threshold value can be pre-set. When each user equipment receives the control signal, each user equipment will perform corresponding measurements to determine the reference signal received power difference, where the reference signal received power difference 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 S-N =|RSRP Serving -RSRP Neighbour |, RSRP Serving The reference signal received power of this cell, RSRP Neighbour is the reference signal received power of the neighboring cell, when the RSRP of the terminal device S-N Greater than the first threshold RSRP thre When the terminal device is detected, it becomes the main lobe device and reports it to the base station.

[0063] Furthermore, the first threshold value can be determined in a variety of ways. For example, the first threshold value is determined based on the antenna gain value of the cell corresponding to the maximum sidelobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle. At this time, RSRP thre =|A(θ Side ) Serving -A(θ Side ) Neighbour |, where A(θ Side ) Serving and A(θ Side ) Neighbour They are the side lobe angles θ of this cell respectively Side The corresponding antenna gain of the cell and the antenna gain value of the neighboring cell, the first threshold value can also be determined based on the antenna gain value of the cell corresponding to the maximum sidelobe expansion angle, the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle, the transmit power value of the cell and the transmit power value of the neighboring cell, at this time RSRP thre =|Pow Serving ·A(θ Side ) Serving -Pow Neighbour ·A(θ Side ) Neighbour |, where Pow serving and Pow NeighbourRepresents the transmit power values of the current cell and the neighboring cell respectively. Side The method of obtaining can be the same as in method 1 The method of obtaining is the same.

[0064] In an embodiment of the present application, it is possible to determine whether a user device is located in an overlapping area of multiple cells based on the difference in RSRP between the current cell and the adjacent cell. A user device in the overlapping area is a sidelobe device, otherwise it is a main lobe device. The threshold value is determined based on the difference in antenna gain and transmission power between the current cell and the adjacent cell in the corresponding sidelobe angle or direction, which can better utilize the directional difference of the antenna to determine the main lobe device.

[0065] 3. Determine the main lobe device based on the reference signal received power of multiple user equipments in the cell:

[0066] Specifically, a second threshold value can be pre-set, and the base station receives a sounding signal sent by multiple user equipments, where the sounding signal can be an uplink channel sounding reference signal (SRS). The base station can measure and obtain the reference signal received power between the uplink channels of the multiple user equipments based on the sounding signal, and the value is RSRP. A，n , and then determine the difference in reference signal received power RSRP between the uplink channels of multiple user equipments A，mn , where RSRP A，mn =|RSRP A，m -RSRP A，n |, that is, the absolute value of the difference between the reference signal received powers of any two uplink channels, if the user equipment's max{RSRP A，mn} is less than the second threshold RSRP A，Thre , it is determined that the user equipment is a main lobe device.

[0067] Furthermore, the second threshold value can be determined 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 adjacent cell corresponding to the maximum sidelobe expansion angle, that is, RSRP A，Thre =max{|A(θ side ) m -A(θ side ) n |}, where θ side The side lobe angle corresponding to this cell can be determined by the normal direction of this cell and the side lobe angle range. Figure 8 Due to the inconsistency of amplitude and phase between antennas corresponding to multiple channels, the gain difference between antennas is greater in the angle region of the side lobe. Side The method of obtaining can be the same as in method 1 The method of obtaining is the same.

[0068] In the embodiment of the present application, the main lobe device can be determined based on the difference level of uplink RSRP between multiple channels of the cell.

[0069] It should be noted that the above three methods of determining the main lobe device can be arbitrarily combined to more accurately determine the main lobe device, thereby improving the accuracy of the estimation of the phase deviation between channels. The embodiment of the present application fully utilizes the characteristic that the antenna gain corresponding to the side lobe device is relatively different due to the amplitude and phase inconsistency between the antennas corresponding to multiple channels, eliminates the side lobe device, and determines the main lobe device.

[0070] like Figure 9 As shown, an embodiment of the communication device 900 provided in the embodiment of the present application includes:

[0071] The determination unit 901 is used to determine a main lobe device from multiple user equipments, where the main lobe device is located in the main lobe direction of the base station antenna radiation; the determination unit 901 can execute step 301 in the above method embodiment.

[0072] The sending unit 902 is used to send a test signal to the main lobe device; the sending unit 902 can execute step 302 in the above method embodiment.

[0073] The receiving unit 903 is used to receive the feedback signal sent by the main lobe device; the receiving unit 903 can execute step 303 in the above method embodiment.

[0074] The prediction unit 904 is configured to predict the channel phase deviation of the base station based on the feedback signal. The prediction unit 904 may execute step 304 in the above method embodiment.

[0075] In an embodiment of the present application, the determination unit 901 determines the main lobe device from multiple user devices, 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. The prediction unit 904 can predict the channel phase deviation of the base station based on the feedback signal. Because the main lobe device is located in the main lobe direction of the base station antenna radiation, the amplitude and phase consistency corresponding to the main lobe direction of the antenna radiation is more accurate. Therefore, estimation based on the main lobe device can improve the phase deviation estimation accuracy based on the terminal air interface measurement, thereby accurately estimating the phase deviation between channels.

[0076] Optionally, the determination unit 901 is specifically configured to determine the main lobe device based on the timing advance 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 the current cell.

[0077] Optionally, the determination unit 901 is also specifically used to obtain the working parameters of the antenna, which include the antenna height, the vertical plane tilt angle and the maximum sidelobe expansion angle; determine the upper sidelobe angle and the lower sidelobe angle according to the vertical plane tilt angle and the maximum sidelobe expansion angle; determine the upper sidelobe distance and the lower sidelobe distance according to the antenna height, the upper sidelobe angle and the lower sidelobe angle; determine the target timing advance level according to the upper sidelobe distance and the lower sidelobe distance; determine the main lobe device from multiple user devices, and the timing advance level of the main lobe device is the target timing advance level.

[0078] Optionally, the determination unit 901 is further specifically used to send a control signal to multiple user devices, the control signal is used to indicate that the multiple user devices report when they are main lobe devices, the reference signal receiving power difference of the main lobe device is greater than a preset first threshold value, and the reference signal receiving power difference is determined based on the reference signal receiving power of the current cell and the reference signal receiving power of the neighboring cell; determine that the multiple user devices that report are main lobe devices.

[0079] Optionally, the first threshold value is determined based on the antenna gain value of the current cell corresponding to the maximum sidelobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle.

[0080] Optionally, the first threshold value is determined based on the antenna gain value of the current cell corresponding to the maximum sidelobe expansion angle, the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle, the transmit power value of the current cell, and the transmit power value of the neighboring cell.

[0081] Optionally, the determination unit 901 is also specifically used to receive detection signals sent by multiple user devices; obtain the reference signal receiving power between the uplink channels of the multiple user devices based on the detection signals; determine the main lobe device from the multiple user devices, and the maximum value of the difference value of the reference signal receiving power between the uplink channels of the main lobe devices is less than a preset second threshold value.

[0082] 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 sidelobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle.

[0083] refer to Figure 10 , is a schematic diagram of a communication device 1000 provided in an embodiment of the present application, which is used to implement the operation of the base station in the above embodiment. Figure 10As shown, the communication device 1000 includes: a processor 1001 and an interface 1003, wherein the processor 1001 is coupled to the interface 1003. The interface 1003 is used to implement communication with other devices. The interface 1003 can be a transceiver or an input / output interface. The interface 1003 can be, for example, an interface circuit. Optionally, the communication device 1000 also includes a memory 1002, wherein the processor 1001 is coupled to the memory 1002. The memory 1002 is used to store instructions executed by the processor 1001, input data required by the processor 1001 to execute instructions, or data generated after the processor 1001 executes instructions.

[0084] The method executed by the base station in the above embodiment can be implemented by the processor 1001 calling a program stored in a memory (which can be the memory 1002 of the multi-antenna device or an external memory). That is, the base station may include a processor 1001, which executes the method executed by the base station in the above method embodiment by calling the program in the memory. The processor here can be an integrated circuit with signal processing capabilities, such as a CPU. The base station can be implemented by one or more integrated circuits configured to implement the above method. For example: one or more ASICs, or one or more microprocessors DSPs, or one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. Alternatively, the above implementation methods can be combined.

[0085] Specifically, Figure 9 The functions / implementation processes of the determination unit 901 and the prediction unit 904 can be realized by Figure 10 The processor 1001 in the communication device 1000 shown calls the computer executable instructions stored in the memory 1002 to implement. Figure 9 The functions / implementation processes of the sending unit 902 and the receiving unit 903 can be realized by Figure 10 The processor 1001 in the communication device 1000 shown calls the computer execution instructions stored in the memory 1002 to implement, or, Figure 9 The functions / implementation processes of the sending unit 902 and the receiving unit 903 can be realized by Figure 10 The interface 1003 in the communication device 1000 shown in FIG is implemented. Exemplarily, the functions / implementation processes of the sending unit 902 and the receiving unit 903 can be implemented by the processor calling program instructions in the memory to drive the interface 1003.

[0086] When the communication device 1000 is a chip used in a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments. The terminal device chip receives information from other modules in the terminal device (such as a radio frequency module or antenna), and the information comes from other terminal devices or network devices; or the terminal device chip sends information to other modules in the terminal device (such as a radio frequency module or antenna), and the information comes from the terminal device to other terminal devices or network devices.

[0087] When the communication device 1000 is a chip used in a network device, the network device chip implements the functions of the network device in the above method embodiment. The network device chip receives information from other modules in the network device (such as a radio frequency module or antenna), and the information comes from other network devices or terminal devices; or the network device chip sends information to other modules in the network device (such as a radio frequency module or antenna), and the information comes from the network device to other network devices or terminal devices.

[0088] In another embodiment of the present application, a computer-readable storage medium is provided, in which computer-executable instructions are stored. When at least one processor of a device executes the computer-executable instructions, the device executes the channel phase deviation prediction method described in the above embodiment.

[0089] In another embodiment of the present application, a computer program product is also provided, which includes computer execution instructions, which are stored in a computer-readable storage medium; at least one processor of the device can read the computer execution instructions from the computer-readable storage medium, and at least one processor executes the computer execution instructions so that the device executes the channel phase deviation prediction method described in the above embodiment.

[0090] In another embodiment of the present application, a chip system is provided, comprising at least one processor and an interface for receiving data and / or signals, and at least one processor for supporting the channel phase deviation prediction method described in the above embodiment. In one possible design, the chip system may also include a memory for storing program instructions and data necessary for the computer device. The chip system may be composed of a chip or may include a chip and other discrete devices.

[0091] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0092] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0093] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0094] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0095] If the integrated unit is implemented in the form of a software functional 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 the part that contributes 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 a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), disk or optical disk, and other media that can store program code.

Claims

1. A channel phase deviation prediction method, characterized in that: include: The base station determines a main lobe device from a plurality of user equipments, where 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, based on the feedback signal, a channel phase deviation of the base station; The base station determining a main lobe device from a plurality of user equipments includes: The base station determines the main lobe device based on the timing advance 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 base station determining the main lobe device based on the timing advances of the multiple user equipments includes: The base station obtains operating parameters of the antenna, where the operating parameters include antenna height, vertical tilt angle, and maximum sidelobe expansion angle; The base station determines an upper sidelobe angle and a lower sidelobe angle according to the vertical plane tilt angle and the maximum sidelobe expansion angle; The base station determines an upper sidelobe distance and a lower sidelobe distance according to the antenna height, the upper sidelobe angle, and the lower sidelobe 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 a main lobe device from the multiple user equipments, and the timing advance level of the main lobe device is the target timing advance level.

2. The method according to claim 1, characterized in that The base station determines the main lobe device based on the reference signal received power of the multiple user equipments in the multiple cells, including: The base station sends a control signal to the multiple user equipments, where the control signal is used to indicate that the multiple user equipments are reporting when they are the main lobe devices, and a reference signal received power difference of the main lobe devices is greater than a preset first threshold value, and 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 base station determines that the multiple user equipments reported are the main lobe devices.

3. The method according to claim 2, characterized in that The first threshold value is determined based on an antenna gain value of the current cell corresponding to a maximum sidelobe expansion angle and an antenna gain value of a neighboring cell corresponding to a maximum sidelobe expansion angle.

4. The method according to claim 2, characterized in that The first threshold value is determined based on the antenna gain value of the current cell corresponding to the maximum sidelobe expansion angle, the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle, the transmit power value of the current cell, and the transmit power value of the neighboring cell.

5. The method according to claim 1, characterized in that The base station determining the main lobe device based on the reference signal received power of the multiple user equipments in the cell includes: The base station receives the detection signals sent by the multiple user equipments; The base station obtains, based on the sounding signal, a reference signal received power between uplink channels of the plurality of user equipments; The base station determines a main lobe device from the multiple user equipments, and the maximum value of the difference in reference signal received power between the uplink channels of the main lobe device is less than a preset second threshold value.

6. The method according to claim 5, characterized in that 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 sidelobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle.

7. A communication device, characterized in that: include: A determining unit, configured to determine a main lobe device from a plurality of user equipments, wherein the main lobe device is located in a main lobe direction of 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 prediction unit, configured to predict a channel phase deviation of the base station based on the feedback signal; The determining unit is specifically configured to determine the main lobe device based on the timing advances of the multiple user equipments, the reference signal received powers of the multiple user equipments in multiple cells, and / or the reference signal received powers of the multiple user equipments in the current cell; The determination unit is specifically further used to obtain the working parameters of the antenna, which include antenna height, vertical plane tilt angle and maximum sidelobe expansion angle; determine the upper sidelobe angle and the lower sidelobe angle according to the vertical plane tilt angle and the maximum sidelobe expansion angle; determine the upper sidelobe distance and the lower sidelobe distance according to the antenna height, the upper sidelobe angle and the lower sidelobe angle; determine the target timing advance level according to the upper sidelobe distance and the lower sidelobe distance; determine the main lobe device from the multiple user devices, and the timing advance level of the main lobe device is the target timing advance level.

8. The device according to claim 7, characterized in that The determination unit is also specifically used to send a control signal to the multiple user devices, and the control signal is used to indicate that the multiple user devices are reported when they are the main lobe devices, and the reference signal receiving power difference of the main lobe devices is greater than the preset first threshold value, and the reference signal receiving power difference is determined based on the reference signal receiving power of the current cell and the reference signal receiving power of the neighboring cell; it is determined that the multiple user devices reported are the main lobe devices.

9. The device according to claim 8, characterized in that The first threshold value is determined based on an antenna gain value of the current cell corresponding to a maximum sidelobe expansion angle and an antenna gain value of a neighboring cell corresponding to a maximum sidelobe expansion angle.

10. The device according to claim 8, characterized in that The first threshold value is determined based on the antenna gain value of the current cell corresponding to the maximum sidelobe expansion angle, the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle, the transmit power value of the current cell, and the transmit power value of the neighboring cell.

11. The device according to claim 7, characterized in that The determining unit is further configured to receive a detection signal sent by the plurality of user equipments; and obtain a reference signal received power between uplink channels of the plurality of user equipments based on the detection signal; A main lobe device is determined from the multiple user equipments, and a maximum value of a difference in reference signal received power between the uplink channels of the main lobe device is less than a preset second threshold value.

12. The device according to claim 11, characterized in that 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 sidelobe expansion angle and the antenna gain value of the neighboring cell corresponding to the maximum sidelobe expansion angle.

13. A communication device, characterized in that: include: A processor is coupled to a memory, wherein the memory is used to store programs or instructions, and when the programs or instructions are executed by the processor, the device performs the method according to any one of claims 1 to 6. 14 . A computer-readable storage medium having instructions stored thereon, which, when the instructions are executed on a computer, enable the computer to execute the method according to claim 1 .

15. A chip system, characterized in that: The method comprises at least one processor and an interface, wherein the interface is configured to receive data and / or signals, and the at least one processor is configured to execute the method according to any one of claims 1 to 6.

16. A computer program product having a computer program stored thereon, characterized in that: When the computer program is executed, the method according to any one of claims 1 to 6 is implemented.

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