CN109714083B - Signal transmission method and related equipment thereof - Google Patents
Signal transmission method and related equipment thereof Download PDFInfo
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- CN109714083B CN109714083B CN201711018925.9A CN201711018925A CN109714083B CN 109714083 B CN109714083 B CN 109714083B CN 201711018925 A CN201711018925 A CN 201711018925A CN 109714083 B CN109714083 B CN 109714083B
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- 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
- H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Abstract
The embodiment of the application discloses a signal transmission method and related equipment thereof, which are used for forming at least two target beams pointing to the same direction according to a second signal and sending a target radio frequency signal. The method in the embodiment of the application comprises the following steps: the antenna device receives a target radio frequency signal and a second signal sent by a remote unit DRH of a distributed antenna system, wherein the target radio frequency signal is generated by the DRH according to a first signal sent by a base station, the first signal is used for carrying user data, and the frequency of the target radio frequency signal is different from that of the second signal; the antenna device forms at least two target beams pointing to the same direction according to the second signal; the antenna device transmits the target radio frequency signal through the target beam.
Description
Technical Field
The present application relates to the field of antennas, and in particular, to a signal transmission method and related device.
Background
Radio waves are distributed between 3Hz and 3000GHz and are divided into 12 bands in the frequency spectrum, wherein the low-frequency band propagation loss is small, the coverage distance is long, but the capacity of a low-frequency band system is limited, the data information capable of being propagated is limited, the energy of a high-frequency band system is large, more data information can be propagated, but the propagation loss is large, so that the coverage distance is limited. As the demand for mobile communication is getting higher and higher, the capacity of the required frequency resource is also getting larger and larger, and it becomes necessary to effectively utilize the resource of the high frequency band.
How to effectively avoid the defect of limited coverage distance when data transmission is performed by using high-frequency resources? A distributed antenna device system (DAS) is a signal relay and signal amplification system, a network array is formed by a plurality of groups of antenna devices, network coverage can be improved under the condition that the number of base stations is not increased, a remote unit DRH in the DAS receives data information transmitted by the base stations and converts the data information into radio frequency signals to be transmitted to a head end of the antenna devices, the head end of the antenna devices carries out signal transmission, and the head end of the antenna devices adopts omnidirectional or directional antenna devices, so that the coverage direction of the transmitted signals is determined. The Beamforming (BF) technology is a technology that focuses the energy of an antenna device to a certain area by forming a narrow beam, and has the main task of compensating signal fading and distortion introduced by factors such as spatial loss and multipath effect in the wireless propagation process, and reducing interference among co-channel users at the same time. For example, when data transmission is performed on the user equipment, the transmission energy may be focused, a narrow beam directed at the user equipment may be formed, and then the data information is transformed and transmitted to the user equipment by using the narrow beam.
In the DAS system, since the direction of signals transmitted by the antenna devices is determined and the direction of signal coverage is also determined, and the beam forming technology is to control the wireless transmission signals of the head ends of a plurality of antennas to form beams with directions, so that the wireless transmission signals all point to the same direction to realize the energy collection of the plurality of antenna devices, in the DAS system, due to the certainty of the direction of the signals transmitted by the antenna devices, the beam forming technology cannot be used to change the transmission direction of the wireless signals, that is, the radio frequency signals transmitted by the antennas, and transmit signals with the same power, and the coverage area of the signals without beam forming is obviously smaller than that of the signals with beam forming.
Disclosure of Invention
The embodiment of the application discloses a signal transmission method and related equipment thereof, which are used for forming at least two target beams pointing to the same direction according to a second signal and sending a target radio frequency signal.
A first aspect of the embodiments of the present application provides a signal transmission method, where the signal transmission method is applied to an antenna apparatus, where the antenna apparatus may include at least two antenna heads, and the signal transmission method may include:
after receiving user data, a base station generates a first signal carrying the user data, and simultaneously generates a second signal for controlling the beam directivity emitted by an antenna device, then the base station sends the first signal and the second signal to a DRH (data radio link), the DRH converts the first signal into a target radio frequency signal and then transfers the target radio frequency signal to the antenna device, the antenna device receives the target radio frequency signal and the second signal sent by the DRH, and the target radio frequency signal and the second signal have different frequencies;
the antenna device adjusts the inclination angle of the target wave beam according to the second signal to form at least two target wave beams pointing to the same direction;
the antenna device loads the target radio frequency signal on the target wave beam and sends the target radio frequency signal to the user equipment together with the target wave beam.
In this embodiment, after receiving a target radio frequency signal carrying user data and a second signal controlling beam directivity, the antenna device forms at least two target beams pointing to the same direction according to the second signal, and then transmits the target radio frequency signal by using the target beams, so as to achieve the purpose of implementing beam energy superposition by controlling beam directivity and transmitting the target radio frequency signal by using the superposed beam energy in the DAS system.
Based on the first aspect, in a first implementation manner of the first aspect of the embodiments of the present application, the second signal may include:
beamforming BF control signals.
In this embodiment, by defining the second signal as a beamformed BF control signal, the implementability of the scheme is increased.
Based on the first implementation manner of the first aspect, in a second implementation manner of the first aspect of the embodiments of the present application, that the forming, by the antenna device, at least two target beams pointing to the same direction according to the second signal may include:
the antenna device can determine the weighting coefficient of the antenna device according to the BF control signal;
the antenna device controls the directivity of the beams according to the weighting coefficients to form at least two target beams pointing to the same direction.
In this embodiment, the BF control signal is used to control the weighting coefficient of the antenna device, so as to control the beam directivity, and achieve the purpose of applying the beam forming technique in the DAS system.
In a third implementation form of the first aspect as such or according to any of the preceding implementation forms of the first aspect, the weighting factor of the antenna device may be obtained by the antenna device based on a parameter in the BF control signal.
In the present embodiment, the practicability of the scheme is increased by describing in detail that the parameters in the BF control signal are necessary factors for obtaining the weighting coefficients.
Based on the second implementation manner of the first aspect or the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect of the embodiments of the present application, the method for forming at least two target beams pointing to the same direction according to the weighting coefficients by the antenna apparatus may include:
the antenna device can adjust the amplitude of the wave beam according to the coefficient of the target wave beam amplitude, realize the superposition of the wave beam and form at least two target wave beams pointing to the same direction;
or the like, or, alternatively,
the antenna device can adjust the phase of the wave beam according to the coefficient of the phase of the target wave beam, realize the superposition of the wave beam and form at least two target wave beams pointing to the same direction;
or the like, or, alternatively,
the antenna device can adjust the amplitude of the beam according to the coefficient of the amplitude of the target beam, and adjust the phase of the beam according to the coefficient of the phase of the target beam, so that the superposition of the beam is realized, and at least two target beams pointing to the same direction are formed.
In this embodiment, by embodying how at least two target beams pointing in the same direction are formed according to the weighting coefficients, the flexibility and diversity of implementation of the scheme are increased.
A second aspect of the embodiments of the present application provides a data transmission method, which may include:
the DRH receives a signal set, wherein the signal set comprises a first signal and a second signal, and then the DRH determines the first signal from the first signal and the second signal, wherein the first signal is used for carrying user data;
because the antenna device can only transmit radio frequency signals, the DRH needs to generate a target radio frequency signal according to the first signal, and the target radio frequency signal has a different frequency from the second signal, so that the antenna device can distinguish the two types of signals;
the DRH transmits the target rf signal and the second signal to the antenna apparatus, wherein the antenna apparatus controls the directivity of its own transmission beam according to the second signal to form at least two target beams pointing to the same direction, and the antenna apparatus may include at least two antenna heads.
In this embodiment, the purpose of controlling the tilt angle of the target beam emitted by the antenna apparatus in the DAS system to achieve superposition of beam energy is achieved by describing in detail from the perspective of DRH that the DRH receives two types of signals, processes the first signal, and sends the processed first signal and the processed second signal to the antenna apparatus.
Based on the second aspect, in a first implementation manner of the second aspect of the embodiments of the present application, the determining, by the DRH, the first signal from the first signal and the second signal may include:
after the DRH receives the signal sets of the first signal and the second signal, the first signal can be determined from the first signal and the second signal according to frequency.
In this embodiment, how the DRH determines the first signal from the signal set of the first signal and the second signal is described in detail, which increases the diversity of the scheme.
A third aspect of the embodiments of the present application provides an antenna apparatus, where the antenna apparatus may include at least two antenna heads, and the antenna apparatus may include:
a receiving unit, configured to receive a target radio frequency signal and a second signal sent by a remote unit DRH of a distributed antenna system, where the target radio frequency signal is generated by the DRH according to a first signal sent by a base station, the first signal is used to carry user data, and frequencies of the target radio frequency signal and the second signal are different;
a forming unit, configured to form at least two target beams pointing in the same direction according to the second signal;
a transmitting unit, which may be configured to transmit the target radio frequency signal through the target beam.
In this embodiment, after the receiving unit receives the target rf signal and the second signal, the forming unit forms at least two target beams pointing to the same direction according to the second signal, and the transmitting unit transmits the target rf signal by using the target beams, so as to achieve the purpose of controlling the transmission tilt angle of the target beams by transmitting the second signal, thereby aggregating the antenna energy, and transmitting the target rf signal by using the aggregated antenna energy.
Based on the third aspect, in a first implementation manner of the third aspect of the embodiments of the present application, the forming unit may include:
a determining module, operable to determine a weighting coefficient for the antenna arrangement based on the BF control signal;
and a forming module, configured to form at least two target beams pointing in the same direction according to the weighting coefficients.
In this embodiment, the BF control signal is used to control the weighting coefficient of the antenna device, so as to control the beam directivity, and achieve the purpose of applying the beam forming technique in the DAS system.
In a second implementation manner of the third aspect of the embodiments of the present application, based on the first implementation manner of the third aspect, the forming module may include:
the first adjusting submodule can be used for adjusting the amplitude of the beam according to the coefficient of the amplitude of the target beam to form at least two target beams pointing to the same direction;
or the like, or, alternatively,
the second adjusting submodule can be used for adjusting the phase of the beam according to the coefficient of the phase of the target beam to form at least two target beams pointing to the same direction;
or the like, or, alternatively,
the third adjusting sub-module may be configured to adjust the amplitude of the beam according to the coefficient of the amplitude of the target beam, and adjust the phase of the beam according to the coefficient of the phase of the target beam, so as to form at least two target beams pointing to the same direction.
In this embodiment, by embodying how at least two target beams pointing in the same direction are formed according to the weighting coefficients, the flexibility and diversity of implementation of the scheme are increased.
A fourth aspect of the embodiments of the present application provides a remote unit of a distributed antenna system, which may include:
a determining unit, configured to determine a first signal from a first signal and a second signal, where the first signal is used to carry user data;
a generating unit, configured to generate a target radio frequency signal according to the first signal, where the target radio frequency signal has a different frequency from the second signal;
a sending unit, configured to send the target rf signal and the second signal to an antenna apparatus, where the second signal is used for the antenna apparatus to form at least two target beams pointing in the same direction to send the target rf signal, and the antenna apparatus may include at least two antenna heads.
In this embodiment, the purpose of controlling the tilt angle of the target beam emitted by the antenna apparatus in the DAS system to achieve superposition of beam energy is achieved by describing in detail from the perspective of DRH that the DRH receives two types of signals, processes the first signal, and sends the processed first signal and the processed second signal to the antenna apparatus.
Based on the fourth aspect, in a first implementation manner of the fourth aspect of the embodiments of the present application, the determining unit may include:
a determining module for determining the first signal from the first signal and the second signal according to frequency.
In this embodiment, how the DRH determines the first signal from the signal set of the first signal and the second signal is described in detail, which increases the diversity of the scheme.
A fifth aspect of the present application provides an antenna apparatus, which may include: a receiver, a transmitter, an antenna array;
the receiver is used for receiving signals sent by a base station;
wherein the antenna array may comprise an antenna head for performing the method as in any one of the first to fourth implementation manners of the first aspect and the first aspect thereof.
A sixth aspect of the present application provides a remote unit of a distributed antenna system, which may include: a memory, a transceiver, a processor, and a bus system;
wherein the memory is for storing programs and instructions;
the transceiver is used for receiving or sending information under the control of the processor;
the processor is used for executing the program in the memory;
the bus system is used for connecting the memory, the transceiver and the processor so as to enable the memory, the transceiver and the processor to communicate;
wherein the processor is configured to call the program instructions in the memory to execute the method according to the second aspect and the first implementation manner of the second aspect.
A seventh aspect of embodiments of the present application provides a computer-readable storage medium, which may include instructions that, when executed on a computer, cause the computer to perform the method as described in the first aspect and any one of the first to fourth implementation manners of the first aspect, the first implementation manner of the second aspect and the second aspect, the first to second implementation manners of the third aspect and the fourth aspect, and the first implementation manner of the fourth aspect.
An eighth aspect of embodiments of the present application provides a computer program product containing instructions, which when run on a computer, causes the computer to perform a method as in any one of the first aspect and the first to fourth implementations of the first aspect, the first implementation of the second aspect and the second aspect thereof, the first to second implementations of the third aspect and the fourth aspect thereof, and the first implementation of the fourth aspect thereof.
According to the technical scheme, the embodiment of the application has the following advantages: in an antenna device including at least two antenna heads, the antenna device receives a target radio frequency signal in addition to a second signal, wherein the target radio frequency signal is derived from a first signal carrying user data, the antenna device generates at least two target beams pointing to the same direction according to the second signal, and transmits the target radio frequency signal by using the target beams. In this embodiment, in the antenna apparatus including at least two antenna heads, while performing target data transmission by using the DRH system, the second signal may be sent to control the antenna apparatus to form a target beam pointing to the same direction, and the target beam is used to send a target radio frequency signal, so that when a signal with a certain power is transmitted in the DAS system, the target radio frequency signal transmission direction may be changed by using a beamforming technology, and the purpose of increasing the signal coverage is achieved.
Drawings
Fig. 1 is a diagram of a typical DAS system solution of the present application;
fig. 2 is a schematic diagram of a signal transmission method according to an embodiment of the present application;
FIG. 3 is a diagram illustrating another exemplary signal transmission method according to an embodiment of the present disclosure;
FIG. 4 is a diagram illustrating another exemplary signal transmission method according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of an embodiment of an antenna device according to an embodiment of the present application;
fig. 6 is a schematic diagram of another embodiment of an antenna device according to an embodiment of the present application;
fig. 7 is a schematic diagram of another embodiment of an antenna device according to an embodiment of the present application;
fig. 8 is a schematic diagram of an embodiment of a remote unit DRH of a distributed antenna system according to an embodiment of the present application;
fig. 9 is a schematic diagram of another embodiment of a remote unit DRH of a distributed antenna system according to an embodiment of the present application;
fig. 10 is a schematic view of another embodiment of an antenna device according to an embodiment of the present application;
fig. 11 is a schematic diagram of another embodiment of a remote unit DRH of a distributed antenna system according to an embodiment of the present application.
Detailed Description
In the embodiment of the present application, a base station 101 sends user data and a control signal to a DAS, and after processing, transmits a radio frequency signal to a User Equipment (UE) 103 through an antenna head of the DAS102, thereby completing transmission of user data. As shown in fig. 1, the DAS includes a distributed antenna system control unit (DAS control unit, DCU)1021, a distributed antenna system remote unit (DAS remote head, DRH)1022, an antenna apparatus 1023, and the like, where the antenna apparatus 1023 may be an antenna system formed by arranging multiple single antennas according to a certain rule, each single antenna includes an antenna head 10231, user data sent by the base station is converted into a radio frequency signal and then sent to the antenna head 10231, and then the antenna head is sent to the user equipment 103, and meanwhile, a BF control signal sent by the base station is also sent to the antenna head 10231, so as to control a transmission tilt angle of the antenna head, and make beams transmitted by at least two antenna heads point to the same direction.
It should be noted that, in this embodiment of the present application, the DRH may be used for radio remote, specifically, the DRH is a unit that can distinguish a control signal and user data according to frequency, and convert the user data into a target radio signal, and the DRH may perform certain processing on the control signal or directly forward the control signal to the antenna head end, which is not limited herein specifically, and it should be noted that the manner of processing the control signal by the DRH may be frequency modulation, or may be other manners, which is not limited herein specifically.
In this embodiment, the antenna apparatus may include a processing system, which is capable of processing the received control signal and then forming at least two target beams pointing in the same direction according to the control signal.
In an embodiment of the present application, a signal transmission method is provided, where the signal transmission method is applied to an antenna apparatus, and the antenna apparatus includes at least two antenna heads, please refer to fig. 2, which will be described below.
201. The antenna device receives a target radio frequency signal and a second signal sent by a distributed antenna system remote unit DRH;
in this embodiment, a base station sends a first signal and a second signal to a DAS system, a DCU unit in the DAS system receives the two types of signals and transfers the signals to a DRH unit, and the DRH unit distinguishes the first signal and the second signal according to signal frequencies after receiving the first signal and the second signal, where the first signal carries user data.
It should be noted that the second signal is used to control the antenna apparatus to form at least two target beams pointing in the same direction, and a beam forming technique is introduced in the embodiment of the present application to achieve this purpose, so the second signal may be a BF control signal, and may also be other control signals in practical applications, and the specific application is not limited herein.
The DRH then modulates the first control signal to form a radio frequency signal of a frequency that is different from the second signal so that the antenna device distinguishes the different signals, and then transmits the radio frequency signal and the second signal to the antenna device.
It should be noted that, the DRH may send the signal to the antenna device through the rf feeder cable, or may send the signal through wireless transmission, and the like, which is not limited herein.
202. The antenna device forms at least two target beams pointing to the same direction according to the second signal;
in this embodiment, after receiving the second signal, the antenna apparatus may analyze the second signal to obtain a control instruction, and form at least two target beams pointing to the same direction according to the control instruction.
In this embodiment, the antenna device may form the target beam pointing in the same direction by adjusting its own transmission tilt angle so as to control the direction of the transmission beam to form a directional beam.
In this embodiment, the tilt angle may be adjusted in different ways according to different structures of the antenna head end, for example, when the antenna head end is in a thin strip structure, the tilt angle of the straight line may be adjusted, and when the antenna head end is in a cone structure, the tilt angle is adjusted based on the perpendicular bisector of the cone structure, and the specific shape of the antenna head end is not limited herein, and therefore the tilt angle is also not limited.
In this embodiment, when there are multiple beams, the specific beam directions may be, for example, that the beam a and the beam B point in 30-degree directions, the beam C points in 60-degree directions, or the beam A, B, C points in 30-degree directions, and the beam D, E points in 60-degree directions, so that besides controlling the beams respectively, all the beams can be controlled uniformly, for example, the beam A, B, C points in the same direction. The specific directional formation of the beams is not limited herein, and only at least two target beams pointing in the same direction need to be satisfied.
203. The antenna device transmits a target radio frequency signal through the target beam.
In this embodiment, the antenna device may transmit the target rf signal through the target beam in a manner that the antenna device carries the target rf signal through the target beam.
In this embodiment, the target beam is a beam directed to the UE.
In the embodiment of the present application, the formation of at least two target beams pointing in the same direction by the antenna device can be realized by controlling the weighting coefficients, please refer to fig. 3, which will be described below.
301. Transmitting the target radio frequency signal and the BF control signal sent by the DRH to an antenna device;
in this embodiment, after receiving the first signal and the BF control signal, the DRH converts the first signal into a target rf signal, and then transmits the target rf signal and the BF control signal to the antenna apparatus. The first signal carries user data, so that the target radio frequency signal also carries user data, the target radio frequency signal is used for transmitting the antenna to user equipment or a server, and the BF control signal is used for controlling the antenna device to form a directional target beam.
302. The antenna device determines a weighting coefficient of the antenna device according to the BF control signal;
in this embodiment, the antenna device may obtain the weighting coefficients of the antenna device according to the parameters in the control signal.
In this embodiment, the weighting coefficient of the antenna apparatus may be an amplitude weighting coefficient of the antenna array, or may be a phase weighting coefficient of the antenna array, which is not limited herein.
In this embodiment, the amplitude weighting is to apply different weights to the radiation amplitudes of the antenna elements in the antenna device, so as to control the directivity of the beam. The phase weighting is to add different weights to the radiation phases of the antenna elements in the antenna device, and convert the amplitude information formed by superimposing a plurality of phases into signal phase information, thereby controlling the directivity of the beam.
In this embodiment, the manner in which the antenna apparatus obtains the weighting coefficient according to the BF control coefficient may be that the antenna apparatus determines a parameter according to the BF control signal in a frequency band corresponding to the frequency, and then the antenna apparatus determines an optimization criterion according to the system performance index requirement of the antenna apparatus, and obtains the weighting coefficient by using the parameter as an independent variable of the optimization criterion.
303. The antenna device forms at least two target beams pointing to the same direction according to the weighting coefficients;
in this embodiment, the antenna apparatus may adjust the amplitude of the beam according to the coefficient of the amplitude of the target beam to form at least two target beams pointing to the same direction, may also adjust the phase of the beam according to the coefficient of the phase of the target beam to form at least two target beams pointing to the same direction, and may also adjust the amplitude of the beam according to the coefficient of the amplitude of the target beam and adjust the phase of the beam according to the coefficient of the phase of the target beam to form at least two target beams pointing to the same direction. And is not particularly limited herein.
It is understood that, in this embodiment, the weighting coefficient may be a coefficient of the target beam amplitude, a coefficient of the target beam phase, or a coefficient of both the target beam amplitude and the target beam phase.
In this embodiment, the manner in which the antenna apparatus can adjust the amplitude of the beam according to the coefficient of the amplitude of the target beam to form at least two target beams pointing in the same direction may be that the antenna apparatus changes the amplitude value (such as horizontal and vertical wave widths, azimuth angle, and the like) radiated by the antenna array element through amplitude weighting, so as to realize the superposition of the amplitudes of the target beams, thereby realizing the directionality of the beam pointing.
In this embodiment, the antenna apparatus may adjust the phases of the beams according to the coefficients of the target beam phases to form at least two target beams pointing in the same direction, in which the antenna apparatus may change the values of the phase shifters by a phase weighting method to change the beam phases (such as horizontal and vertical wave widths, azimuth angles, etc.), so that the target beams are approximately overlapped, thereby achieving the directionality of beam pointing.
In this embodiment, when there are multiple beams, the form of at least two target beams pointing to the same direction formed by the antenna apparatus is similar to that in step 202, the beam a and the beam B may point to an angle of 30 degrees, the beam C may point to an angle of 60 degrees, the beam A, B, C may point to an angle of 30 degrees, and the beam D, E points to an angle of 60 degrees, and besides controlling the beams respectively, all the beams may be controlled uniformly, for example, the beam A, B, C points to the same direction. The specific directional formation of the beams is not limited herein, and only at least two target beams pointing in the same direction need to be satisfied.
In the present embodiment, the structure of the antenna head end is similar to that in step 202 of the embodiment, and the structure is different, and the tilt angle is adjusted differently.
304. The antenna device transmits the target radio frequency signal through the target beam.
In this embodiment, a manner of transmitting the target rf signal through the target beam by the antenna apparatus is similar to step 203 in the embodiment shown in fig. 2, and details thereof are not repeated here.
Fig. 2 and 3 illustrate an embodiment of the present application from the perspective of an antenna device, and with reference to fig. 4, the following description will illustrate an embodiment of the present application from the perspective of DRH.
The present embodiment will be described with reference to specific application scenarios.
In the process of communication between a user A and a user B, firstly, the user A sends target data to a base station, the base station generates a first signal carrying the user data, and simultaneously generates a BF control signal for controlling an antenna head end, the base station sends the first signal and the BF control signal to a DCU, then the DCU transfers to a DRH, the DRH receives the two types of signals and distinguishes the signals, firstly, the first signal is subjected to frequency modulation to generate a target radio frequency signal, then, the target radio frequency signal and the control signal are sent to an antenna device, the antenna head end also needs to distinguish the two types of signals, at least two target wave beams pointing to the same direction are formed by using the weighting coefficients of the control signal adjusting antenna device, and then, the target radio frequency signal is sent by using the target wave beams, so that the purpose of gathering wave beam energy to send the user data.
401. The DRH determines a first signal from the first signal and a second signal;
the DRH receives a first signal and a second signal sent by a base station, when the DAS system includes a DCU, the base station sends the first signal and the second signal to the DCU first, and then the DCU transfers the first signal to the DRH, and then the DRH determines the first signal according to the difference in frequency between the first signal and the second signal. For example, the first signal and the second signal respectively carry signal identifiers, the signal identifiers are used for distinguishing different signals, and the specific manner of determining the first signal from the first signal and the second signal by the DRH is not limited herein.
In this embodiment, the first signal is a signal carrying user data.
402. The DRH generates a target radio frequency signal according to the first signal, wherein the target radio frequency signal has a different frequency from the second signal;
after the DRH determines the first signal, before the first signal is transmitted through the antenna head, since the antenna head can only transmit the radio frequency signal, the DRH needs to convert the first signal into the target radio frequency signal, and the specific conversion manner may be frequency modulation.
In this embodiment, the frequencies of the target rf signal and the second signal are different, and the antenna device can distinguish the two types of received signals according to the frequencies.
403. The DRH sends the target radio frequency signal and the second signal to the antenna device;
in this embodiment, the DRH may transmit the target rf signal and the second signal to the antenna device through the rf feeder cable.
In this embodiment, the target rf signal is a high-frequency signal, and the second signal may be a high-frequency signal or a low-frequency signal, which is not limited herein.
405. And the antenna device forms at least two target beams pointing to the same direction according to the second signal and sends the target radio frequency signal.
The manner in which the antenna apparatus forms at least two target beams pointing to the same direction according to the second signal is similar to step 202 in the embodiment shown in fig. 2, and details thereof are not repeated here.
While the embodiments of the present application have been described above from the perspective of a signal transmission method, referring to fig. 5, the embodiments of the present application will be described below from the perspective of an antenna device.
A receiving unit 501, configured to receive a target radio frequency signal and a second signal sent by a remote unit DRH of a distributed antenna system, where the target radio frequency signal is generated by the DRH according to a first signal sent by a base station, the first signal is used to carry user data, and frequencies of the target radio frequency signal and the second signal are different;
a forming unit 502, configured to form at least two target beams pointing in the same direction according to the second signal;
a transmitting unit 503, configured to transmit the target radio frequency signal through the target beam.
In this embodiment, after the receiving unit 501 receives the target rf signal and the second signal, the forming unit 502 forms at least two target beams pointing to the same direction according to the second signal, and the sending unit 503 sends the target rf signal through the target beams, so as to achieve the purpose of sending user data by focusing beam energy.
In this embodiment, there are various ways to form at least two target beams pointing to the same direction according to the second signal, please refer to fig. 6, one of which is described below.
A receiving unit 601, configured to receive a target radio frequency signal and a second signal sent by a remote unit DRH of a distributed antenna system, where the target radio frequency signal is generated by the DRH according to a first signal sent by a base station, the first signal is used to carry user data, and frequencies of the target radio frequency signal and the second signal are different;
a forming unit 602, configured to form at least two target beams pointing in the same direction according to the second signal;
a transmitting unit 603, configured to transmit the target radio frequency signal through the target beam.
Wherein the forming unit includes:
a determining module 6021 for determining a weighting coefficient of the antenna arrangement according to the BF control signal;
a forming module 6022, configured to form at least two target beams pointing to the same direction according to the weighting coefficients.
In this embodiment, the determining module 6021 determines the weighting coefficients of the antenna devices according to the BF control signal, and then the forming module 6022 forms at least two target beams pointing to the same direction according to the weighting coefficients, so as to achieve the purpose of focusing the antenna energy by controlling the weighting coefficients of the antenna devices, thereby increasing the feasibility of implementation of the solution.
In this embodiment, there are various ways to form at least two target beams pointing to the same direction according to the weighting coefficients, and please refer to fig. 7, which will be described below.
A receiving unit 701, configured to receive a target radio frequency signal and a second signal sent by a remote unit DRH of a distributed antenna system, where the target radio frequency signal is generated by the DRH according to a first signal sent by a base station, the first signal is used to carry user data, and frequencies of the target radio frequency signal and the second signal are different;
a forming unit 702, configured to form at least two target beams pointing in the same direction according to the second signal;
a transmitting unit 703, configured to transmit the target radio frequency signal through the target beam.
Wherein the forming unit includes:
a determining module 7021, configured to determine a weighting coefficient of the antenna apparatus according to the BF control signal;
a forming module 7022, configured to form at least two target beams pointing in the same direction according to the weighting coefficients.
Wherein the forming module includes:
the first adjusting submodule 70221 is configured to adjust the amplitude of the beam according to the coefficient of the amplitude of the target beam to form at least two target beams pointing to the same direction;
or the like, or, alternatively,
a second adjusting submodule 70222, configured to adjust the phases of the beams according to the coefficients of the phases of the target beams to form at least two target beams pointing in the same direction;
or the like, or, alternatively,
the third adjusting submodule 70223 is configured to adjust the amplitude of the beam according to the coefficient of the amplitude of the target beam, and adjust the phase of the beam according to the coefficient of the phase of the target beam, so as to form at least two target beams pointing to the same direction.
In this embodiment, the flexibility of the scheme is increased by enumerating various ways of forming at least two target beams pointing in the same direction according to the weighting coefficients.
The embodiments of the present application are described above from the perspective of an antenna device, and with reference to fig. 8, the embodiments of the present application will be described below from the perspective of a remote unit of a distributed antenna system.
A determining unit 801, configured to determine a first signal from the first signal and the second signal, where the first signal is used to carry user data;
a generating unit 802, configured to generate a target radio frequency signal according to the first signal, where the target radio frequency signal has a different frequency from the second signal;
a sending unit 803, configured to send the target rf signal and a second signal to the antenna apparatus, where the second signal is used for the antenna apparatus to form at least two target beams pointing to the same direction, and the antenna apparatus includes at least two antenna heads.
In this embodiment, after the determining unit 801 determines the first signal, the generating unit 802 generates the target rf signal according to the first signal, and the transmitting unit 803 transmits the target rf signal and the second signal to the antenna apparatus, so that the antenna apparatus can form at least two target beams pointing to the same direction according to the second signal and transmit the target rf signal by using the target beams.
In this embodiment, the manner of determining the first signal from the first signal and the second signal may be determined according to the frequency. Referring to fig. 9, the following description will be made.
A determining unit 901, configured to determine a first signal from the first signal and the second signal, where the first signal is used to carry user data;
a generating unit 902, configured to generate a target radio frequency signal according to the first signal, where the target radio frequency signal has a different frequency from the second signal;
a sending unit 903, configured to send a target radio frequency signal and a second signal to the antenna apparatus, where the second signal is used for the antenna apparatus to form at least two target beams pointing to the same direction, and the antenna apparatus includes at least two antenna heads.
Wherein the determination unit includes:
a determining module 9011, configured to determine the first signal from the first signal and the second signal according to a frequency.
In this embodiment, the determining module 9011 determines the first signal according to the frequency, so as to increase the diversity of the scheme.
The present embodiment provides a schematic diagram of another antenna structure, as shown in fig. 10.
The antenna apparatus provided in the embodiment of the present application includes a plurality of receivers 1001, a transmitter 1002, an antenna array 1003, and an antenna head 1005.
The antenna array 1003 shown in this embodiment includes at least one antenna element 1004.
In the present embodiment, the specific number of the antenna units 1004 included in the antenna array 1003 is not limited, and as shown in fig. 10 as an example, the present embodiment takes the antenna array 1003 including four antenna units 1004 as an example for illustration.
Specifically, the first antenna head 1005 is connected to a receiver 1001, and the different first antenna head 1005 is connected to a different receiver 1001.
The second antenna head 1006 is coupled to a receiver 1002, and a different second antenna head 1006 is coupled to a different receiver 1002.
In the antenna device of this embodiment, the number of the transmitter and the number of the receiver are not limited, and the number of the transmitter and the number of the receiver do not need to be equal, so that the antenna device of this embodiment can be applied to different scenes, and the antenna device is simplified in this embodiment, thereby effectively improving the yield of manufacturing the antenna device, and reducing the loss of the antenna. Volume and weight for the user to install and use.
The embodiment of the present application further provides a remote unit of a distributed antenna system, including:
fig. 11 is a schematic structural diagram of a DRH1100 according to an embodiment of the present disclosure, where the DRH1100 may have a relatively large difference due to different configurations or performances, and may include one or more Central Processing Units (CPUs) 1122 (e.g., one or more processors) and a memory 1132, and one or more storage media 1130 (e.g., one or more mass storage devices) for storing applications 1142 or data 1144. Memory 1132 and storage media 1130 may be, among other things, transient storage or persistent storage. The program stored on the storage medium 1130 may include one or more modules (not shown), each of which may include a sequence of instructions for operating on the DRH. Still further, the central processor 1122 may be provided in communication with the storage medium 1130 to execute a series of instruction operations in the storage medium 1130 on the DRH 1100.
The DRH1100 may also include one or more power supplies 1126, one or more wired or wireless network interfaces 1150, one or more input-output interfaces 1158, and/or one or more operating systems 1141, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and the like.
The steps performed by the DRH in the above embodiments may be based on the DRH structure shown in fig. 11.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a local client, or a network device) to execute all or part of the steps of the method in the embodiments of fig. 2 to 4 of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (12)
1. A signal transmission method applied to an antenna apparatus including at least two antenna heads, the signal transmission method comprising:
the antenna device receives a target radio frequency signal and a second signal sent by a remote unit DRH of a distributed antenna system, wherein the target radio frequency signal is generated by the DRH according to a first signal sent by a base station, the first signal is used for carrying user data, and the frequency of the target radio frequency signal is different from that of the second signal;
the antenna device controls the transmission inclination angle of the antenna head end according to the second signal, so that the beams transmitted by the at least two antenna head ends point to the same direction, and at least two target beams pointing to the same direction are formed;
the antenna device transmits the target radio frequency signal through the target beam.
2. The method of claim 1, wherein the second signal comprises:
beamforming BF control signals.
3. The method of claim 2, wherein the antenna device forming at least two target beams pointing in the same direction according to the second signal comprises:
the antenna device determines a weighting coefficient of the antenna device according to the BF control signal;
and the antenna device forms at least two target beams pointing to the same direction according to the weighting coefficients.
4. A method according to claim 3, characterized in that the weighting coefficients of the antenna arrangement are derived by the antenna arrangement from parameters in the BF control signal.
5. The method according to claim 3 or 4, wherein the antenna device forming at least two target beams pointing in the same direction according to the weighting coefficients comprises:
the antenna device adjusts the amplitude of the beam according to the coefficient of the amplitude of the target beam to form at least two target beams pointing to the same direction;
or the like, or, alternatively,
the antenna device adjusts the phase of the beam according to the coefficient of the phase of the target beam to form at least two target beams pointing to the same direction;
or the like, or, alternatively,
and the antenna device adjusts the amplitude of the beam according to the coefficient of the amplitude of the target beam and adjusts the phase of the beam according to the coefficient of the phase of the target beam to form at least two target beams pointing to the same direction.
6. A signal transmission method, comprising:
a distributed antenna system (DRH) determines a first signal from a first signal and a second signal, wherein the first signal is used for carrying user data;
the DRH generates a target radio frequency signal according to the first signal, wherein the target radio frequency signal is different from the second signal in frequency;
and the DRH sends the target radio frequency signal and the second signal to an antenna device, wherein the second signal is used for controlling the transmission inclination angle of the antenna head end by the antenna device, so that the beams transmitted by at least two antenna head ends point to the same direction, thereby forming at least two target beams pointing to the same direction and sending the target radio frequency signal, and the antenna device comprises the at least two antenna head ends.
7. The method of claim 6, wherein the DRH determining the first signal from the first signal and the second signal comprises:
the DRH determines the first signal from the first signal and the second signal as a function of frequency.
8. An antenna arrangement comprising at least two antenna heads, characterized in that the antenna arrangement comprises:
a receiving unit, configured to receive a target radio frequency signal and a second signal sent by a remote unit DRH of a distributed antenna system, where the target radio frequency signal is generated by the DRH according to a first signal sent by a base station, the first signal is used to carry user data, and frequencies of the target radio frequency signal and the second signal are different;
a forming unit, configured to control a transmission tilt angle of the antenna head according to the second signal, so that the beams transmitted by the at least two antenna heads point to a same direction, thereby forming at least two target beams pointing to the same direction;
a transmitting unit, configured to transmit the target radio frequency signal through the target beam.
9. The antenna device according to claim 8, wherein the forming unit includes:
a determining module, configured to determine a weighting coefficient of the antenna apparatus according to a BF control signal;
and the forming module is used for forming at least two target beams pointing to the same direction according to the weighting coefficients.
10. The antenna device according to claim 9, wherein the forming module includes:
the first adjusting submodule is used for adjusting the amplitude of the beam according to the coefficient of the amplitude of the target beam to form at least two target beams pointing to the same direction;
or the like, or, alternatively,
the second adjusting submodule is used for adjusting the phase of the beam according to the coefficient of the phase of the target beam to form at least two target beams pointing to the same direction;
or the like, or, alternatively,
and the third adjusting submodule is used for adjusting the amplitude of the beam according to the coefficient of the amplitude of the target beam and adjusting the phase of the beam according to the coefficient of the phase of the target beam to form at least two target beams pointing to the same direction.
11. A distributed antenna system remote unit, comprising:
a determining unit, configured to determine a first signal from a first signal and a second signal, where the first signal is used to carry user data;
a generating unit, configured to generate a target radio frequency signal according to the first signal, where the target radio frequency signal is different in frequency from the second signal;
and a sending unit, configured to send the target radio frequency signal and the second signal to an antenna apparatus, where the second signal is used for the antenna apparatus to control a transmission tilt angle of an antenna head, so that beams transmitted by at least two antenna heads point to a same direction, thereby forming at least two target beams pointing to the same direction, and sending the target radio frequency signal, where the antenna apparatus includes the at least two antenna heads.
12. The remote unit according to claim 11, wherein the determining unit comprises:
a determining module to determine the first signal from the first signal and the second signal according to a frequency.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711018925.9A CN109714083B (en) | 2017-10-26 | 2017-10-26 | Signal transmission method and related equipment thereof |
| PCT/CN2018/111604 WO2019080862A1 (en) | 2017-10-26 | 2018-10-24 | Signal transmission method and related device |
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| CN201711018925.9A CN109714083B (en) | 2017-10-26 | 2017-10-26 | Signal transmission method and related equipment thereof |
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| CN109714083B true CN109714083B (en) | 2021-07-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FI20055483A0 (en) * | 2005-09-08 | 2005-09-08 | Nokia Corp | Data transmission system in wireless communication system |
| CN102195917B (en) * | 2010-03-09 | 2014-01-08 | 华为技术有限公司 | Method and device for sharing site and determining site cell identifier during cooperative communication |
| CN102404086B (en) * | 2010-09-17 | 2016-03-09 | 株式会社Ntt都科摩 | Multi-user dispatching method and device and beam form-endowing method and device |
| CN102916732B (en) * | 2011-08-02 | 2017-10-03 | 南京中兴软件有限责任公司 | A kind of method, system and control station for realizing super cell data transfer |
| US9287956B2 (en) * | 2013-02-16 | 2016-03-15 | Cable Television Laboratories, Inc. | Multiple-input multiple-output (MIMO) communication system |
| US20140307610A1 (en) * | 2013-04-12 | 2014-10-16 | Alcatel-Lucent Usa Inc. | Multimedia broadcast multicast services over distributed antenna system |
| CN106330279B (en) * | 2015-07-01 | 2020-02-14 | 华为技术有限公司 | Method and device for realizing resource allocation by applying network architecture |
| US9967081B2 (en) * | 2015-12-04 | 2018-05-08 | Hon Hai Precision Industry Co., Ltd. | System and method for beamforming wth automatic amplitude and phase error calibration |
| US20170194704A1 (en) * | 2016-01-05 | 2017-07-06 | John Mezzalingua Associates, LLC | Antenna having a beam interrupter for increased throughput |
| CN105589058B (en) * | 2016-01-29 | 2019-05-31 | 宋春丽 | A kind of antenna assembly and three-dimensional radar system |
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