CN110166092B - Method and device for generating mapping vector from data port to antenna - Google Patents
Method and device for generating mapping vector from data port to antenna Download PDFInfo
- Publication number
- CN110166092B CN110166092B CN201810152271.7A CN201810152271A CN110166092B CN 110166092 B CN110166092 B CN 110166092B CN 201810152271 A CN201810152271 A CN 201810152271A CN 110166092 B CN110166092 B CN 110166092B
- Authority
- CN
- China
- Prior art keywords
- antenna
- array antenna
- vector
- channel
- paths
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
The application provides a method and a device for generating a mapping vector from a data port to an antenna, wherein the method comprises the following steps: acquiring a guide vector v of an antenna of a base station in each space direction and a cell autocorrelation matrix R corresponding to the guide vector v; acquiring the power and the space direction of each channel path in a data channel; determining M target paths based on the channel paths, wherein M is less than or equal to M, and M is the number of the channel paths in the data channel; generating a weighted beam vector r by using the steering vectors of the m target paths and a mapping vector f from a pilot port to an antenna; a mapping vector w of data ports to antennas is generated using the cell autocorrelation matrix R and the weighted beam vector R. By adopting the method and the device provided by the application, the data signal wave beam can be formed only in the direction of each path of the data channel as far as possible, so that the signal-to-noise ratio of the data signal received by the user equipment is improved.
Description
Technical Field
The present application relates to the field of wireless communications, and in particular, to a method and an apparatus for generating a mapping vector from a data port to an antenna.
Background
Beam Forming (BF) is a technology combining antenna technology and digital signal processing technology, and its basic principle is to adjust the radiation directions of multiple transmitting antennas to form directional physical beams in space, so as to improve the performance of signal transmission in a specific direction. In a multiple-input multiple-output (MIMO) system, a set of precoding matrices may be designed for a base station according to a certain metric criterion by using part or all of Channel State Information (CSI) of a channel, and a signal sent by the base station forms a virtual beam to reach a user equipment after passing through the precoding matrices and a spatial channel, so that the effectiveness and reliability of signal transmission of the MIMO system or the MISO system may be effectively improved on the basis of not occupying additional frequency resources.
The signal sent by the base station in the process of data transmission usually consists of two parts, namely a pilot signal and a data signal, and when the signal is transmitted, the base station usually adopts the same cell-level beam to send down the pilot signal and the data signal, so that equivalent channels of the two parts are the same. The pilot signal is a signal sent by the base station for the purpose of measurement or monitoring, and the base station sends the pilot signal and the data signal by using the same cell-level beam, so that the user equipment can estimate a data channel for transmitting the data signal according to the pilot signal, thereby completing the reception of the data signal.
For example, the pilot signal received by the user equipment can be expressed as: y is p ＝Hfx+n p (ii) a Wherein the content of the first and second substances,
representing the channel from the base station's antenna to the user equipment, f representing the mapping vector of the pilot port to the base station's antenna, x being the pilot signal, n p Representing noise on the pilot signal. And the data signal received by the user equipment may be represented as: y is d ＝Hws+n d Where w denotes a mapping vector of pilot ports to antennas of the base station, s denotes a data signal, n d Representing noise on the data signal. In practical use, w = f may be given, so that the UE may estimate the equivalent channel Hf = Hw and thus demodulate s.
Since the pilot signal needs to be covered by the cell level and is provided for all users in the cell to perform channel estimation, and the data signal only needs to be sent to a specific user equipment, most of energy is not aligned to the incoming direction (DoA) of the user equipment when the data signal also covers the whole cell, which results in lower signal-to-noise ratio of the data signal received by the user equipment.
Disclosure of Invention
The application provides a method and a device for generating a mapping vector from a data port to an antenna, so as to improve the signal-to-noise ratio of a data signal received by user equipment.
In a first aspect, the present application provides a method for generating a mapping vector of data ports to antennas. The method comprises the following steps: acquiring a guide vector v of an antenna of a base station in each space direction and a cell autocorrelation matrix R corresponding to the guide vector v; acquiring the power and the space direction of each channel path in a data channel; determining M target paths based on the channel paths, wherein M is less than or equal to M, and M is the number of the channel paths in the data channel; generating a weighted beam vector r by using the steering vectors of the m target paths and a mapping vector f from a pilot port to an antenna; a mapping vector w of data ports to antennas is generated using the cell autocorrelation matrix R and the weighted beam vector R. By adopting the method, the data signal wave beam can be formed only in the direction of each path of the data channel as much as possible, thereby improving the signal-to-noise ratio of the data signal received by the user equipment.
With reference to the first aspect, in a first possible implementation manner of the first aspect, if the antenna is a linear array antenna, an area array antenna, or a volume array antenna, the spatial direction of the channel path is a combination of a pitch angle and an azimuth angle of the channel path
Or, if the antenna is a horizontal line array antenna or an aligned area array antenna, the spatial direction of the channel path is an equivalent pitch angle θ of the channel path; or, if the antenna is a vertical linear array antenna or an aligned planar array antenna, the spatial direction of the channel path is the equivalent azimuth angle of the channel path
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, if the antenna is a linear array antenna, an area array antenna, or a volume array antenna, the steering vector is determined
Cell autocorrelation matrix R = R s Wherein, in the process,
lambda is the wavelength of the wireless communication carrier,
the position of the ith antenna element of the antenna in a three-dimensional rectangular coordinate is defined; or, if the antenna of the base station is a horizontal line array antenna or an aligned area array antenna, the antenna of the base station is a horizontal line array antenna or an aligned area array antenna
R＝R h Wherein, in the step (A),
or, if the antenna of the base station is a vertical linear array antenna or an aligned planar array antenna, v = v (θ), R = R v Wherein the content of the first and second substances,
with reference to the first aspect or one of the first to second possible manners of the first aspect, in a third possible implementation manner of the first aspect, if the antenna is a linear array antenna, an area array antenna, or a volume array antenna, then
Wherein the content of the first and second substances,
representing a spatial direction of an ith said target path; f is a mapping vector of a pilot port to the antenna; or, if the antenna is a horizontal line array antenna or an aligned area array antenna, r = r h Wherein, in the process,
f h mapping vectors for the horizontal dimension of the pilot port to the antenna; or, if the antenna is a vertical linear array antenna or an aligned planar array antennaLine, then r = r v Wherein, then
f v A vector is mapped for the vertical dimension of the pilot port to the antenna.
With reference to the first aspect or one of the first to third possible manners of the first aspect, in a fourth possible implementation manner of the first aspect, if the antenna is a linear array antenna, an area array antenna, or a volume array antenna, then
Or, if the antenna is a horizontal line array antenna or an aligned area array antenna, then
Wherein the content of the first and second substances,
f v mapping vectors for the pilot port to the vertical dimension of the antenna; or if the antenna is a vertical linear array antenna or an aligned planar array antenna, then
Wherein the content of the first and second substances,
f h a vector is mapped for the horizontal dimension of the pilot port to the antenna.
With reference to the first aspect or one of the first to fourth possible manners of the first aspect, in a fifth possible implementation manner of the first aspect, the method further includes: and carrying out normalization processing on the mapping vector w of the antenna data port.
In a second aspect, the present application further provides an apparatus for generating a mapping vector from a data port to an antenna, including: the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a guide vector v of an antenna of a base station in each space direction and a cell autocorrelation matrix R corresponding to the guide vector v; acquiring the power and the space direction of each channel path in a data channel; a processing unit, configured to determine M target paths based on the channel paths, where M is equal to or less than M, where M is the number of channel paths in the data channel; generating a weighted beam vector r by using the steering vectors of the m target paths and a mapping vector f from a pilot port to an antenna; a mapping vector w of data ports to antennas is generated using the cell autocorrelation matrix R and the weighted beam vector R. By adopting the device, the data signal wave beam can be formed only in the direction of each path of the data channel as much as possible, thereby improving the signal-to-noise ratio of the data signal received by the user equipment. The processing unit may be further configured to perform normalization processing on the antenna data port mapping vector w.
In a third aspect, the present application further provides a communication device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method according to the first aspect or any implementation manner of the first aspect.
In a fourth aspect, the present application further provides a computer-readable storage medium, which is characterized by comprising instructions that, when executed on a computer, cause the computer to perform the method according to the first aspect or any implementation manner of the first aspect.
In a fifth aspect, the present application further provides a computer program product, which when run on a computer causes the computer to perform the method according to the first aspect or any one of the implementations of the first aspect.
In a sixth aspect, the present application further provides an apparatus comprising a processor, the processor being configured to couple with a memory, read instructions in the memory, and execute the method according to the instructions according to the first aspect or any implementation manner of the first aspect.
Drawings
FIG. 1 is a schematic illustration of pitch and azimuth angles for the present application;
FIG. 2 is a schematic diagram of a data signal beam according to the present application;
fig. 3 is a schematic flowchart illustrating an embodiment of a method for generating a mapping vector from a data port to an antenna according to the present application;
fig. 4 is a schematic structural diagram of an embodiment of an apparatus for generating mapping vectors of data ports to antennas according to the present application;
fig. 5 is a schematic structural diagram of an embodiment of a wireless communication device of the present application.
Detailed Description
To facilitate explanation of the technical aspects of the present application, first, concepts related to the application will be briefly described below.
In various embodiments of the present application, a User Equipment (UE) may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication capabilities, as well as various forms of Mobile Stations (MSs), terminals (terminals), terminal equipment (terminal equipment), and so on. The user equipment may be configured with only a single antenna, or may be configured with multiple antennas. For convenience of description, the present application only illustrates that the user equipment configures a single antenna, and the solution of the present application may also be applied to user equipment configured with multiple antennas.
And a base station refers to a device deployed in a radio access network to provide wireless communication functions for user equipment. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, names of devices having a base station function may be different, for example, in an LTE network, referred to as an evolved Node B (eNodeB), in a third generation 3G network, referred to as a Node B (Node B), and so on, in a 5G network, referred to as a next generation Node B or a Gbit Node B, a gNB.
The antenna of the base station may be an Active Antenna System (AAS), and the antenna system may be a linear array antenna, an area array antenna, or a volume array antenna according to different arrangement modes of the antenna array elements, where the linear array antenna may include a horizontal linear array antenna and a vertical linear array antenna, the horizontal linear array antenna refers to an antenna in which the antenna array elements are horizontally arranged on the same straight line, the vertical linear array antenna refers to an antenna in which the antenna array elements are vertically arranged on the same straight line, and the area array antenna may include an aligned area array antenna and a non-aligned area array antenna, or a volume array antenna, where the aligned area array antenna refers to an antenna in which the antenna array elements of each row are completely aligned on the same straight line.
Under the condition that the arrangement mode of the antenna array elements is determined, a mapping vector w from a pilot port of a base station to an antenna determines the beam shape of the pilot port, and the mapping vector can also be called as a pilot port mapping vector; a similar base station data port to antenna mapping vector w, which may also be referred to as a data port mapping vector, determines the beam shape of the data port. It should be noted that, in the present application, the mapping vector and the beam from the port to the antenna are not distinguished, and both are used equivalently.
In each embodiment of the present application, the specific meaning of the spatial direction of the channel path may also be different according to different arrangement modes of the antenna array elements. For example, the spatial orientation of the channel paths may be a combination of the pitch and azimuth angles of the channel paths
Or may be an equivalent pitch angle θ of the channel paths, or may be an equivalent azimuth angle of the channel paths
Wherein the pitch angle theta and the azimuth angle theta
Can be defined in the following way: subtracting 90 degrees from an included angle of the z-axis in a three-dimensional rectangular coordinate to obtain a pitch angle theta, and taking an included angle between a projection on an xoy plane and the x-axis as an azimuth angle
This may be particularly shown in figure 1. Wherein, the three-dimensional coordinate system can be established according to needs, and the z-axis can be vertical to the ground in general.
Because within a certain very short time segment, canConsidering the channel as linear time invariant, the equivalent time domain channel from the pilot port through the base station's antenna to the UE antenna can be expressed as:
the equivalent time domain channel from the data port through the base station antenna to the UE antenna can be expressed as:
wherein p is i Expressed as the power of the i-th path channel, θ i And
representing pitch and azimuth, τ, of the ith path channel i Represents the relative time delay (absolute time delay and sampling period T) of the ith path channel s Ratio of (d), h i Expressed as the small-scale fading factor, h, of the ith path channel i E CN (0, 1), is a circularly symmetric complex Gaussian noise of zero mean unit power.
In an OFDM system, if there are K subcarriers in the full band, the channel frequency domain response on the kth subcarrier of the pilot signal can be expressed as:
wherein f is T v may be referred to as an array factor, W, of the pilot port K ＝e j2π/K . The channel frequency domain response on the k sub-carrier of the data signal can then be expressed as:
wherein w T v may be referred to as the array factor of the data port.
In practical use, when optimizing the user equipment level beam w, it is possible to form the data signal beam only in the direction of each path of the data channel as much as possible, for example, as shown in fig. 2. The beam forming only in each channel path direction of the data channel can be embodied by an objective function, which can be expressed as:
wherein, the first and the second end of the pipe are connected with each other,
F d indicating that the beam is formed only in the direction of the m channel paths and w indicates that the beam of the data port is as close as possible to this ideally narrow beam. While w is accumulated in the spatial direction of full cell coverage. The optimal solution is as follows:
wherein the content of the first and second substances,
is a constant matrix, is only cell coverage dependent, and is user equipment independent,
wherein () * Indicating that conjugation was taken. Therefore, the mapping vector from the data port to the antenna is generated by adopting the method, and the mapping vector is used for beamforming the data signal, so that the data signal beam can be formed only in the direction of each path of the data channel as much as possible, and the signal-to-noise ratio of the data signal received by the user equipment is improved.
The following describes a specific implementation manner of the scheme of the present application for forming a data signal beam in each path direction of a data channel with reference to the drawings.
Referring to fig. 3, a schematic flowchart of an embodiment of a method for generating a mapping vector from a data port to an antenna according to the present application is shown. As illustrated in fig. 3, this embodiment may include the steps of:
Direction of space
The corresponding direction vector can be expressed as
If there are N antenna elements in the antenna, the position of the ith antenna element in the three-dimensional rectangular coordinate can be expressed as:
the antenna is in the space direction
The steering vector of (a) may be expressed as:
wherein the content of the first and second substances,
lambda is the wavelength of the wireless communication carrier wave] T Representing a transpose operation.
According to different arrangement modes of antenna array elements in the antenna, the steering vector v and the matrix R corresponding to the steering vector v can be different from each other.
If the antenna is a linear array antenna, an area array antenna or a body array antenna, the antenna can be provided with
R＝R s (ii) a Wherein, the first and the second end of the pipe are connected with each other,
lambda is the wavelength of the wireless communication carrier,
refers to the position of the ith antenna element of the antenna in a three-dimensional rectangular coordinate.
If the antenna of the base station is a horizontal line array antenna or an aligned area array antenna, the base station can have
R＝R h (ii) a Wherein the content of the first and second substances,
if the antenna of the base station is a vertical linear array antenna or an aligned planar array antenna, v = v (θ), R = R v (ii) a Wherein the content of the first and second substances,
In specific use, the spatial direction of the channel path may be determined according to the arrangement of the antenna elements, and may generally be the spatial direction of the channel path is an equivalent pitch angle θ of the channel path, and an equivalent azimuth angle of the channel path
Or combinations of pitch and azimuth angles of the channel paths
One of them.
Generally, whether the antenna is a linear, area or volume array antenna, the spatial direction may be a combination of the elevation and azimuth of the channel path
If the antenna is a horizontal line array antenna or an aligned area array antenna, the spatial direction may be an equivalent pitch angle θ of the channel path; if the antenna is a vertical linear array antenna or an aligned planar array antenna, the spatial direction may be an equivalent azimuth angle of the channel path
The base station side can estimate the power, time delay and space direction of each path of the channel through the uplink signal. For example. In the LTE system, a base station may estimate a time delay, power, and a direction of each path of a channel through an uplink reference signal (SRS), and a specific implementation process is not described herein again.
After the channel path and spatial direction of each data channel are determined, the base station may determine m target paths based on the power of the channel paths. The base station can select M target paths from the M channel paths; or M target paths can be determined according to the distribution range of the M channel paths. In this case, among the M target paths, at least one target path may be different from the M channel paths.
Specifically, the base station may select M paths with the largest power from the M channel paths as the target path; alternatively, M channels with the largest sum of power and beam gain may be selected from the M channels as the target channel; or, M target paths may be selected from a preset range centered on the distribution center point of the M channel paths. The target diameter may be selected in other ways, and will not be described in detail here.
According to different specific meanings of the spatial direction, a mapping vector F is expected d The specific generation mode of the method is different. Wherein, the spatial direction of the target path is consistent with the spatial direction of the channel path, that is, when the spatial direction of the channel path is the equivalent pitch angle of the channel path, the spatial direction of the target path is also the equivalent pitch angle of the target path; when the space direction of the channel path is the equivalent azimuth angle of the channel path, the space direction of the target path is also the equivalent azimuth angle of the target path; and when the spatial direction of the channel path is the combination of the pitch angle and the azimuth angle of the channel path, the spatial direction of the target path is also the combination of the pitch angle and the azimuth angle of the target path.
The specific meaning of the spatial direction of the target path is different, and a mapping vector F is expected d The generation modes that can be used are also different, specifically:
if the spatial direction of the channel path is the combination of the pitch angle and the azimuth angle of the channel path
The base station generates a combination of pitch and azimuth angles with said channel path
Corresponding expected mapping vector
Wherein the content of the first and second substances,
if the spatial direction of the channel path is the equivalent azimuth angle of the channel path
The base station generates an equivalent azimuth angle to said channel path
Corresponding expected mapping vector
If the space direction of the channel path is the equivalent pitch angle theta of the channel path, the base station generates an expected mapping vector F corresponding to the equivalent pitch angle theta of the channel path d (θ)，
The generation modes of the mapping vector w are different according to different arrangement modes of the antenna array elements.
No matter the antenna is a linear array antenna, an area array antenna or a body array antenna, the signal can be subjected to wave beam forming in a horizontal and vertical combined forming modeAnd (5) molding. In this case, the mapping vector of the data port to the antenna
If the antenna is a horizontal line array antenna or an aligned area array antenna, then the signal may also be beamformed by using a horizontal plane forming manner. In this case, the mapping vector of the data port to the antenna
Wherein the content of the first and second substances,
f v a vector is mapped for the vertical dimension of the pilot port to the antenna,
if the antenna is a vertical linear array antenna or an aligned planar array antenna, then a vertical plane forming mode can be adopted to perform beam forming on signals. In this case, the mapping vector of the data port to the antenna
Wherein the content of the first and second substances,
f h a vector is mapped for the horizontal dimension of the pilot port to the antenna,
in step 305, the base station performs beamforming on the signal according to the mapping vector w.
After obtaining the mapping vector w, the base station may perform beamforming on the data signal according to the mapping vector w.
By generating the mapping vector from the data port to the antenna and using the mapping vector to perform beamforming on the data signal, the method provided by the embodiment can form a data signal beam only in the direction of each path of the data channel as much as possible, thereby improving the signal-to-noise ratio of the data signal received by the user equipment.
Referring to fig. 4, a schematic structural diagram of an embodiment of an apparatus for generating a mapping vector from a data port to an antenna according to the present application is shown. The apparatus may be located at a base station or be the base station itself.
As shown in fig. 4, the apparatus may include: an acquisition unit 401 and a processing unit 402.
The obtaining unit 401 is configured to obtain a steering vector v of an antenna of a base station in each spatial direction and a cell autocorrelation matrix R corresponding to the steering vector v; acquiring the power and the space direction of each channel path in a data channel; the processing unit 402 is configured to determine M target paths based on the channel paths, where M is equal to or less than M, and M is the number of channel paths in the data channel; generating a weighted beam vector r by using the steering vectors of the m target paths and a mapping vector f from a pilot port to an antenna; a mapping vector w of data ports to antennas is generated using the cell autocorrelation matrix R and the weighted beam vector R. For specific contents of the steering vector v and the cell autocorrelation matrix R, reference may be made to the foregoing embodiments, and details are not repeated here.
In an implementation manner, the processing unit 402 may be further configured to perform normalization processing on the antenna data port mapping vector w.
In another implementation manner, when M target paths are determined based on the channel paths, the processing unit 402 is specifically configured to select M paths with the largest power from the M channel paths as the target paths; or M channels with the largest sum of power and beam gain are selected from the M channels as the target channels; or selecting M target paths from a preset range taking the distribution center points of the M channel paths as centers.
Referring to fig. 5, a schematic structural diagram of an embodiment of the wireless communication device of the present application is shown.
As shown in fig. 5, the wireless communication device may be composed of a processor 501, a memory 502, a transceiver 503, and the like, wherein the processor 501, the memory 502, and the transceiver 503 are coupled to each other.
The processor 501 is the control center of the wireless communication device, connects various parts of the entire wireless communication device using various interfaces and lines, and performs various functions of the wireless communication device and/or processes data by running or executing software programs and/or modules and/or instructions stored in the memory 502, and calling data stored in the memory. The processor may be formed of an Integrated Circuit (IC), for example, a single packaged IC, or a plurality of packaged ICs with the same or different functions connected. For example, the processor may include only a Central Processing Unit (CPU), or may be a combination of a GPU, a Digital Signal Processor (DSP), and a control chip (e.g., a baseband chip) in the transceiver. In the embodiments of the present application, the CPU may be a single arithmetic core or may include multiple arithmetic cores.
The transceiver 503 is used to establish a communication channel through which the wireless communication device connects to the receiving device, thereby implementing data transmission between the wireless communication devices. The transceiver may include a Wireless Local Area Network (WLAN) module, a bluetooth module, a baseband (base band) module, and other communication modules, and a Radio Frequency (RF) circuit corresponding to the communication module, and is configured to perform WLAN communication, bluetooth communication, infrared communication, and/or cellular communication system communication, such as Wideband Code Division Multiple Access (WCDMA) and/or High Speed Downlink Packet Access (HSDPA). The transceiver is used to control communications of components in the wireless communication device and may support direct memory access (dma).
In various embodiments of the present application, the various circuits or modules in the transceiver 503 are typically in the form of integrated circuit chips (integrated circuit chips) and may be selectively combined, without necessarily including all transceivers and corresponding antenna groups. For example, the transceiver may include only a baseband chip, a radio frequency chip, and corresponding antenna to provide communication functions in a cellular communication system. The wireless communication device may be connected to a cellular network (cellular network) or the internet (internet) via a wireless communication connection established by the transceiver, such as a wireless local area network access or a WCDMA access. In some alternative embodiments of the present application, the communication module, e.g., baseband module, in the transceiver may be integrated into a processor, typically an APQ + MDM family platform as provided by Qualcomm corporation. The radio frequency circuit is used for receiving and sending signals in the process of information transceiving or conversation. For example, after receiving the downlink information of the network device, the downlink information is sent to the processor for processing; in addition, the data designed to be upstream is sent to the network device. Typically, the radio frequency circuitry includes well-known circuitry for performing these functions, including but not limited to an antenna system, a radio frequency transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a codec (codec) chipset, a Subscriber Identity Module (SIM) card, memory, and so forth. In addition, the radio frequency circuitry may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to global system for mobile communications (GSM), general packet radio service (gprs), code Division Multiple Access (CDMA), wideband Code Division Multiple Access (WCDMA), high Speed Uplink Packet Access (HSUPA), long Term Evolution (LTE), email, short Message Service (SMS), and the like.
The functions to be implemented by the acquiring unit in the embodiment shown in the figure may be implemented by a transceiver of the wireless communication device, or may also be implemented by a processor; the functions to be performed by the transmitting unit shown in the embodiments shown in the figures may also be performed by the transceiver of the wireless communication device or may also be performed by the processor; the functions to be performed by the illustrated processing unit in the illustrated embodiment may be performed by a processor.
The transceiver is used for acquiring a steering vector v of an antenna of a base station in each spatial direction and a cell autocorrelation matrix R corresponding to the steering vector v; acquiring the power and the space direction of each channel path in a data channel; the processor is configured to determine M target paths based on the channel paths, where M is equal to or less than M, and M is the number of channel paths in the data channel; generating a weighted beam vector r by using the steering vectors of the m target paths and a mapping vector f from a pilot port to an antenna; a mapping vector w of data ports to antennas is generated using the cell autocorrelation matrix R and the weighted beam vector R. For specific contents of the steering vector v and the cell autocorrelation matrix R, reference may be made to the foregoing embodiments, and details are not repeated here.
In specific implementation, the present application further provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments of the calling method provided in the present application when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like.
Those skilled in the art will clearly understand that the techniques in the embodiments of the present application may be implemented by way of software plus a required general hardware platform. Based on such understanding, the technical solutions in the embodiments of the present application may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the embodiments or some parts of the embodiments of the present application.
The same and similar parts among the various embodiments in this specification may be referred to each other. In particular, for the embodiment of the wireless communication device, since it is basically similar to the embodiment of the method, the description is simple, and for the relevant points, refer to the description in the embodiment of the method.
The above-described embodiments of the present application do not limit the scope of the present application.
Claims (14)
1. A method for generating a mapping vector of data ports to antennas is characterized by comprising the following steps:
acquiring a guide vector v of an antenna of a base station in each space direction and a cell autocorrelation matrix R corresponding to the guide vector v;
acquiring the power and the space direction of each channel path in a data channel;
determining M target paths based on the channel paths, wherein M is less than or equal to M, and M is the number of the channel paths in the data channel;
generating a weighted beam vector r by using the steering vectors of the m target paths and a mapping vector f from a pilot port to an antenna;
a mapping vector w of data ports to antennas is generated using the cell autocorrelation matrix R and the weighted beam vector R.
2. The method of claim 1,
if the antenna is a linear array antenna, an area array antenna or a body array antenna, the spatial direction of the channel path is the combination of the pitch angle and the azimuth angle of the channel path
Or, if the antenna is a horizontal line array antenna or an aligned area array antenna, the spatial direction of the channel path is an equivalent pitch angle θ of the channel path;
or, if the antenna is a vertical linear array antenna or an aligned planar array antenna, the spatial direction of the channel path is an equivalent azimuth angle of the channel path
3. The method of claim 2,
if the antenna isLinear, area or volume array antennas, then steering vectors
Cell autocorrelation matrix R = R s Wherein, in the step (A),
lambda is the wavelength of the wireless communication carrier,
the position of the ith antenna element of the antenna in a three-dimensional rectangular coordinate is defined;
or, if the antenna of the base station is a horizontal line array antenna or an aligned area array antenna, the base station may further include a second antenna
R＝R h Wherein, in the step (A),
or, if the antenna of the base station is a vertical linear array antenna or an aligned planar array antenna, v = v (θ), R = R v Wherein the content of the first and second substances,
4. the method of claim 3,
if the antenna is a linear array antenna, an area array antenna or a body array antenna, then
Wherein, the first and the second end of the pipe are connected with each other,
representing the spatial direction of the ith target path; f is a mapping vector of a pilot port to the antenna;
or, if the antenna is a horizontal line array antenna or an aligned area array antenna, r = r h Wherein, in the step (A),
f h mapping vectors for the horizontal dimension of the pilot port to the antenna;
or, if the antenna is a vertical linear array antenna or an aligned planar array antenna, r = r v Wherein, then
f v A vector is mapped for the vertical dimension of the pilot port to the antenna.
5. The method of claim 4,
if the antenna is a linear array antenna, an area array antenna or a body array antenna, then
Or, if the antenna is a horizontal line array antenna or an aligned area array antenna, then
Wherein the content of the first and second substances,
f v mapping vectors for the pilot ports to the vertical dimension of the antenna;
or, if the antenna is a vertical linear array antenna or an aligned planar array antenna, then
Wherein the content of the first and second substances,
f h a vector is mapped for the horizontal dimension of the pilot port to the antenna.
6. The method of any of claims 1 to 5, further comprising:
and carrying out normalization processing on the antenna data port mapping vector w.
7. The method of any of claims 1 to 5, wherein determining m target paths based on the channel paths comprises:
selecting M channels with the maximum power from the M channels as the target channels;
or M channels with the largest sum of power and beam gain are selected from the M channels as the target channels;
or selecting M target paths from a preset range taking the distribution center points of the M channel paths as centers.
8. An apparatus for generating mapping vectors of data ports to antennas, comprising:
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a guide vector v of an antenna of a base station in each space direction and a cell autocorrelation matrix R corresponding to the guide vector v; acquiring the power and the space direction of each channel path in a data channel;
a processing unit, configured to determine M target paths based on the channel paths, where M is equal to or less than M, where M is the number of channel paths in the data channel; generating a weighted beam vector r by using the steering vectors of the m target paths and a mapping vector f from a pilot port to an antenna; a mapping vector w of data ports to antennas is generated using the cell autocorrelation matrix R and the weighted beam vector R.
9. The apparatus of claim 8,
if the antenna is a linear array antenna, an area array antenna or a body array antenna, the space of the channel path is squareA combination of pitch and azimuth to the channel path
Or, if the antenna is a horizontal line array antenna or an aligned area array antenna, the spatial direction of the channel path is an equivalent pitch angle θ of the channel path;
or, if the antenna is a vertical linear array antenna or an aligned planar array antenna, the spatial direction of the channel path is an equivalent azimuth angle of the channel path
10. The apparatus of claim 9,
if the antenna is a linear array antenna, an area array antenna or a volume array antenna, the vector is guided
Cell autocorrelation matrix R = R s Wherein, in the step (A),
lambda is the wavelength of the wireless communication carrier,
the position of the ith antenna element of the antenna in a three-dimensional rectangular coordinate is defined;
or, if the antenna of the base station is a horizontal line array antenna or an aligned area array antenna, the base station may further include a second antenna
R＝R h Wherein, in the process,
or, if the antenna of the base station is a vertical linear array antenna or an aligned planar array antenna, v = v (θ), R = R v Wherein the content of the first and second substances,
11. the apparatus of claim 10,
if the antenna is a linear array antenna, an area array antenna or a body array antenna, then
Wherein the content of the first and second substances,
representing the spatial direction of the ith target path; f is the mapping vector of the pilot port to the antenna
Or, if the antenna is a horizontal line array antenna or an aligned area array antenna, r = r h Wherein, in the process,
f h mapping vectors for pilot ports to the horizontal dimension of the antenna;
or, if the antenna is a vertical linear array antenna or an aligned planar array antenna, r = r v Wherein, then
f v A vector is mapped for the vertical dimension of the pilot port to the antenna.
12. The apparatus of claim 11,
if the antenna is a linear array antenna, an area array antenna or a body array antenna, then
Or, if the antenna is a horizontal line array antenna or an aligned area array antenna, then
Wherein, the first and the second end of the pipe are connected with each other,
f v mapping vectors for the pilot port to the vertical dimension of the antenna;
or, if the antenna is a vertical linear array antenna or an aligned planar array antenna, then
Wherein, the first and the second end of the pipe are connected with each other,
f h a vector is mapped for the horizontal dimension of the pilot port to the antenna.
13. The apparatus according to any one of claims 8 to 12,
the processing unit is further configured to perform normalization processing on the antenna data port mapping vector w.
14. The apparatus according to any one of claims 8 to 12,
the processing unit is specifically configured to select M channels with the largest power from the M channel paths as the target path; or M channels with the largest sum of power and beam gain are selected from the M channels as the target channels; or selecting M target paths from a preset range taking the distribution center points of the M channel paths as centers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810152271.7A CN110166092B (en) | 2018-02-14 | 2018-02-14 | Method and device for generating mapping vector from data port to antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810152271.7A CN110166092B (en) | 2018-02-14 | 2018-02-14 | Method and device for generating mapping vector from data port to antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110166092A CN110166092A (en) | 2019-08-23 |
| CN110166092B true CN110166092B (en) | 2022-10-04 |
Family
ID=67635639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810152271.7A Active CN110166092B (en) | 2018-02-14 | 2018-02-14 | Method and device for generating mapping vector from data port to antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110166092B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111988075B (en) * | 2020-07-10 | 2021-05-28 | 中国人民解放军战略支援部队航天工程大学 | Antenna array signal synthesis method based on maximum correlation signal-to-noise ratio criterion |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399589A (en) * | 2007-09-30 | 2009-04-01 | 中兴通讯股份有限公司 | Multi-antenna pilot mapping method |
| CN103840907A (en) * | 2012-11-20 | 2014-06-04 | 电信科学技术研究院 | Pilot signal transmission method, signal measuring method, signal measuring system, pilot signal transmission equipment and signal measuring equipment |
| CN104079329A (en) * | 2014-06-26 | 2014-10-01 | 华为技术有限公司 | Virtual antenna port mapping method and base station |
| CN104777467A (en) * | 2015-04-03 | 2015-07-15 | 中国科学院电子学研究所 | Target detection method based on frequency scan antenna |
| CN105519029A (en) * | 2013-12-31 | 2016-04-20 | 展讯通信（上海）有限公司 | OFDM communication system and method and device for receiving and transmitting signals |
| WO2017219739A1 (en) * | 2016-06-24 | 2017-12-28 | 电信科学技术研究院 | Method and device for determining beamforming vector |
| CN107534540A (en) * | 2015-04-10 | 2018-01-02 | Lg 电子株式会社 | The method and its equipment of reporting channel status information in a wireless communication system |
-
2018
- 2018-02-14 CN CN201810152271.7A patent/CN110166092B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399589A (en) * | 2007-09-30 | 2009-04-01 | 中兴通讯股份有限公司 | Multi-antenna pilot mapping method |
| CN103840907A (en) * | 2012-11-20 | 2014-06-04 | 电信科学技术研究院 | Pilot signal transmission method, signal measuring method, signal measuring system, pilot signal transmission equipment and signal measuring equipment |
| CN105519029A (en) * | 2013-12-31 | 2016-04-20 | 展讯通信（上海）有限公司 | OFDM communication system and method and device for receiving and transmitting signals |
| CN104079329A (en) * | 2014-06-26 | 2014-10-01 | 华为技术有限公司 | Virtual antenna port mapping method and base station |
| CN104777467A (en) * | 2015-04-03 | 2015-07-15 | 中国科学院电子学研究所 | Target detection method based on frequency scan antenna |
| CN107534540A (en) * | 2015-04-10 | 2018-01-02 | Lg 电子株式会社 | The method and its equipment of reporting channel status information in a wireless communication system |
| WO2017219739A1 (en) * | 2016-06-24 | 2017-12-28 | 电信科学技术研究院 | Method and device for determining beamforming vector |
Non-Patent Citations (3)
| Title |
|---|
| 5G无线通信系统信道建模的现状和挑战;庞立华等;《电波科学学报》;20171031;第32卷(第5期);全文 * |
| Antenna port to TXRU virtualization mapping;Samsung;《3GPP TSG RAN WG1 Meeting #79 R1-144751》;20141107;全文 * |
| 八天线TD-LTE系统的波束赋形算法分析;郭彬等;《电讯技术》;20100820(第08期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110166092A (en) | 2019-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10917159B2 (en) | Beam information feedback method and apparatus, and configuration information feedback method and apparatus | |
| CN106850009B (en) | Method for determining communication beam and corresponding device | |
| US10903888B2 (en) | Configuration method and configuration device for reference signal and communication node | |
| US8989295B2 (en) | Multi-layer beamforming with partial channel state information | |
| US11664876B2 (en) | Method and device for training downlink beams | |
| EP3360263A1 (en) | Techniques to reduce radiated power for mimo wireless systems | |
| CN108631842B (en) | Method and device for determining device beam reciprocity and electronic device | |
| CN115882918A (en) | Beam training method and device | |
| CN110166092B (en) | Method and device for generating mapping vector from data port to antenna | |
| US20200229003A1 (en) | Access Point Device and Communication Method | |
| KR20210119824A (en) | Method and apparatus for verification of line-of-sight signal in communication system | |
| CN112020077B (en) | Communication method and device | |
| CN113543322A (en) | Beam alignment method and device | |
| CN115336185B (en) | Communication method and terminal equipment | |
| US20240162947A1 (en) | Communication method and apparatus | |
| WO2024108385A1 (en) | Method and apparatus used for communication, storage medium, program product, and communication system | |
| US20240023104A1 (en) | Method and electronic device for transmitting precoded pucch signal in wireless communication system | |
| CN107888254B (en) | Information transmission method and communication node | |
| WO2019014889A1 (en) | Beam tracking method, rru, bbu and base station | |
| WO2023202772A1 (en) | Uplink receiver processing in extreme massive multi-user multiple input multiple output systems | |
| CN117479222A (en) | Communication method and device | |
| CN112994766A (en) | Beam transmission method and related equipment | |
| CN117674930A (en) | Reference signal processing method, device and system | |
| CN113972934A (en) | Data transmission method, device, equipment and readable storage medium | |
| EP3298701A1 (en) | Use of basis functions for transmission of broadcast control information in a wireless network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |