CN113939017A - Method, apparatus and storage medium for controlling effective omnidirectional radiation power - Google Patents

Method, apparatus and storage medium for controlling effective omnidirectional radiation power Download PDF

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Publication number
CN113939017A
CN113939017A CN202010603886.4A CN202010603886A CN113939017A CN 113939017 A CN113939017 A CN 113939017A CN 202010603886 A CN202010603886 A CN 202010603886A CN 113939017 A CN113939017 A CN 113939017A
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user equipment
base station
initial
value
radiation power
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Inventor
杨勇
孙铭扬
张健
王银波
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN202010603886.4A priority Critical patent/CN113939017A/en
Priority to PCT/CN2021/101867 priority patent/WO2022001793A1/en
Publication of CN113939017A publication Critical patent/CN113939017A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

An embodiment of the present application provides an effective omni-directional radiation power control method, apparatus and storage medium, including: a base station sends a measurement request to user equipment; the base station receives the beam ID, the beam level value and the position information which are sent by the user equipment and correspond to the user equipment respectively, and determines the downward inclination angle of the base station according to the position information of the base station, the beam ID, the beam level value and the position information which correspond to the user equipment; the base station determines an empty beam set within a preset range; for any beam A in the null beam set, if the initial effective omnidirectional radiation power of the beam A is greater than the preset threshold, the base station adjusts the initial effective omnidirectional radiation power of the beam A to obtain the target effective omnidirectional radiation power of the beam A. By the means, the aim of adaptively adjusting the effective omnidirectional radiation power EIRP of the wave beam can be achieved.

Description

Method, apparatus and storage medium for controlling effective omnidirectional radiation power
Technical Field
The present application relates to the field of communications technologies, and in particular, to an effective omni-directional radiation power control method, apparatus, and storage medium.
Background
The World radio communication Conference (WRC) 19 Conference of the International Telecommunications Union (ITU) organization in 2019 defines new terms for the 5G high band: in order to avoid interference of a base station to a synchronous on-orbit satellite, the maximum Effective omnidirectional Radiated Power (EIRP) of the base station with a frequency band of 24.24-27.5 GHz is required to be less than 30dBW/200MHz bandwidth/beam.
EIRP is also called Equivalent Isotropic Radiated Power (EIRP), and its definition is: the product of the power supplied to the antenna for the radio transmitter and the absolute gain of the antenna in a given direction.
In the prior art, the EIRP energy of a certain direction position is reduced by a hardware array arrangement mode. Wherein, the beam shape is related to the arrangement of the physical antenna array (such as the horizontal spacing, the vertical spacing and the number of the arrays among the arrays), and the EIRP of the pair grating lobes is reduced by changing the arrangement mode of the physical antenna array in the prior art. However, it can only suppress grating lobes and not main lobes, and according to common antenna design, there is a risk that the main lobe beam EIRP energy exceeds WRC19 at antenna downtilt angles <8 degrees; and the suppression capability of the main lobe and the grating lobe is determined by hardware, and the self-adaptive adjustment cannot be carried out, such as the adjustment cannot be carried out according to the change of the inclination angle.
Electromagnetic and Magnetic Fields (EMF) power control: in order to avoid the harm of electromagnetic field to human health, the total transmitting power radiated to human body by base station needs to be controlled. In the prior art, different grids are divided in space, then the total transmission power of each grid is counted according to a fixed period, and if the transmission power exceeds a certain threshold, the power of the grid exceeding the threshold is reduced. However, the corresponding constraint of EMF power control is ground coverage, and the WRC19 constraint cannot be solved for the empty grating lobe energy; and EMF needs to be led into the base station working parameters through an off-line tool, online automatic calculation is not supported, the possibility of manual measurement errors is high, and the cost is high.
Disclosure of Invention
The application discloses an effective omnidirectional radiation power control method, device and storage medium, which can realize the self-adaptive control of the effective omnidirectional radiation power.
In a first aspect, an embodiment of the present application provides an effective omni-directional radiation power control method, including: a base station sends a measurement request to user equipment, wherein the measurement request is used for indicating the user equipment to measure and sending a beam ID, a beam level value and position information corresponding to the user equipment; the base station receives the beam ID, the beam level value and the position information which are sent by the user equipment and correspond to the user equipment respectively, and determines the downward inclination angle of the base station according to the position information of the base station, the beam ID, the beam level value and the position information which correspond to the user equipment; the base station determines an empty beam set within a preset range according to the downward inclination angle of the base station; for any wave beam A in the null wave beam set, the base station obtains the initial effective omnidirectional radiation power of the wave beam A according to the initial wave beam antenna gain and the initial transmitting power of the wave beam A; if the initial effective omnidirectional radiation power of the beam A is larger than a preset threshold, the base station adjusts the initial effective omnidirectional radiation power of the beam A according to the preset threshold, the initial beam antenna gain of the beam A and the initial transmitting power so as to obtain the target effective omnidirectional radiation power of the beam A.
According to the scheme, based on the measurement result of the user equipment, when the effective omnidirectional radiation power of the wave beam exceeds the preset threshold value, the antenna gain of the wave beam and/or the transmitting power of the wave beam can be adjusted, so that the adjusted effective omnidirectional radiation power does not exceed the preset threshold value. By the means, the purpose of self-adaptive adjustment of the effective omnidirectional radiation power EIRP of the wave beam is achieved.
On the other hand, the scheme reports the measurement information through the user equipment, so that the base station can automatically realize the measurement of the downward inclination angle through an algorithm, and the cost of manual measurement input is reduced.
According to the scheme, the EIRP can be adaptively controlled according to different inclination angles of the base station; wherein the coverage performance to terrestrial users is minimized while satisfying the EIRP threshold. In addition, the scheme can realize the independent control of each beam in a refined mode, and the minimum control precision reaches 0.1 dBm.
The location information of the user equipment may be coordinates, longitude and latitude, and may also be grid information.
Wherein the target effective omnidirectional radiation power of the beam A is not greater than the preset threshold.
Wherein the base station sends the measurement request to M user equipments, where M is a positive integer, and the base station determines a downtilt angle of the base station according to the location information of the base station, the beam ID, the beam level value, and the location information corresponding to the user equipment, and includes: the base station determines a beam arrival angle corresponding to each user equipment according to the position information of the base station, the position information of each user equipment in the M user equipment and the beam level value; the base station determines a reference beam ID of each user equipment according to the beam ID and the beam level value corresponding to each user equipment, and determines an angle corresponding to the reference beam ID of each user equipment according to the reference beam ID of each user equipment; the base station obtains initial downtilts of the M base stations according to the beam arrival angle corresponding to each user equipment in the M user equipment and the angle corresponding to the reference beam ID of each user equipment; and the base station determines the downward inclination angle of the base station according to the M initial downward inclination angles.
Wherein the base station adjusts the initial effective omnidirectional radiation power of the beam a according to the preset threshold, the initial beam antenna gain of the beam a, and the initial transmission power to obtain the target effective omnidirectional radiation power of the beam a, and the method includes: the base station acquires a first value, wherein the first value is a difference value between the preset threshold value and the initial effective omnidirectional radiation power of the wave beam A; the base station adjusting an initial beam antenna gain of the beam A to obtain a reference beam antenna gain of the beam A, wherein the reference beam antenna gain is smaller than the initial beam antenna gain; the base station acquires a second numerical value according to the initial beam antenna gain and the reference beam antenna gain; and if the second value is not less than the first value, the base station obtains the target effective omnidirectional radiation power of the beam A according to the reference beam antenna gain of the beam A and the initial transmission power.
If the second value is smaller than the first value, the base station determines the reference transmission power of the beam A according to the first value, the second value and the initial transmission power of the beam A; and the base station obtains the target effective omnidirectional radiation power of the wave beam A according to the reference wave beam antenna gain and the reference emission power of the wave beam A.
In a second aspect, an embodiment of the present application provides an effective omni-directional radiation power control apparatus, including: a sending module, configured to send a measurement request to a user equipment, where the measurement request is used to instruct the user equipment to measure and send a beam ID, a beam level value, and location information corresponding to the user equipment; a receiving module, configured to receive a beam ID, a beam level value, and location information corresponding to the user equipment sent by the user equipment, and determine a downtilt of the apparatus according to the location information of the apparatus, the beam ID, the beam level value, and the location information corresponding to the user equipment; the determining module is used for determining a null beam set in a preset range according to the downward inclination angle of the device; an obtaining module, configured to obtain, for any beam a in the null beam set, an initial effective omnidirectional radiation power of the beam a according to an initial beam antenna gain and an initial transmission power of the beam a; and an adjusting module, configured to adjust the initial effective omnidirectional radiation power of the beam a according to a preset threshold, the initial beam antenna gain of the beam a, and the initial transmission power if the initial effective omnidirectional radiation power of the beam a is greater than the preset threshold, so as to obtain a target effective omnidirectional radiation power of the beam a.
Wherein the target effective omnidirectional radiation power of the beam A is not greater than the preset threshold.
The sending module is specifically configured to send the measurement request to M user equipments, where M is a positive integer, and the receiving module is specifically configured to: determining a beam arrival angle corresponding to each user equipment according to the position information of the device, the position information of each user equipment in the M user equipments and the beam level value; determining a reference beam ID of each user equipment according to the beam ID and the beam level value corresponding to each user equipment, and determining an angle corresponding to the reference beam ID of each user equipment according to the reference beam ID of each user equipment; obtaining initial downtilts of the M devices according to the beam arrival angle corresponding to each user equipment in the M user equipment and the angle corresponding to the reference beam ID of each user equipment; determining a down tilt of the device from the M initial down tilts.
Wherein, the adjusting module is specifically configured to: acquiring a first value, wherein the first value is a difference value between the preset threshold and the initial effective omnidirectional radiation power of the beam A; adjusting an initial beam antenna gain of the beam A to obtain a reference beam antenna gain of the beam A, wherein the reference beam antenna gain is smaller than the initial beam antenna gain; acquiring a second numerical value according to the initial beam antenna gain and the reference beam antenna gain; and if the second value is not less than the first value, obtaining the target effective omnidirectional radiation power of the beam A according to the reference beam antenna gain of the beam A and the initial transmission power.
The device further comprises: if the second value is smaller than the first value, the adjusting module is specifically configured to: determining a reference transmit power of the beam A according to the first value, the second value and the initial transmit power of the beam A; and obtaining the target effective omnidirectional radiation power of the wave beam A according to the reference wave beam antenna gain and the reference emission power of the wave beam A.
In a third aspect, a control device is provided, which can implement the control method in the first aspect. For example, the control device may be a chip (such as a baseband chip, or a communication chip, etc.) or a terminal device. The above-described method may be implemented by software, hardware, or by executing corresponding software by hardware.
In a possible implementation manner, the control device includes a processor, a memory; the processor is configured to support the apparatus to perform the corresponding functions in the above-described control method. The memory is used for coupling with the processor, which holds the necessary programs (instructions) and/or data for the device. Optionally, the control apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.
In another possible implementation manner, the control device may include a unit module for performing corresponding actions in the above method.
In yet another possible implementation, the wireless communication device includes a processor and a transceiver, the processor is coupled to the transceiver, and the processor is configured to execute a computer program or instructions to control the transceiver to receive and transmit information; the processor is further configured to implement the above-described method when the processor executes the computer program or instructions. The transceiver may be a transceiver, a transceiver circuit, or an input/output interface. When the control device is a chip, the transceiver is a transceiver circuit or an input/output interface.
When the control device is a chip, the sending unit may be an output unit, such as an output circuit or a communication interface; the receiving unit may be an input unit, such as an input circuit or a communication interface. When the control device is a network device, the sending unit can be a transmitter or a transmitter; the receiving unit may be a receiver or a receiver.
In a fourth aspect, the present application provides a computer storage medium comprising computer instructions that, when executed on an electronic device, cause the electronic device to perform the method as provided in any one of the possible embodiments of the first aspect.
In a fifth aspect, the embodiments of the present application provide a computer program product, which when run on a computer, causes the computer to execute the method as provided in any one of the possible embodiments of the first aspect.
It will be appreciated that the apparatus of the second aspect, the control apparatus of the third aspect, the computer storage medium of the fourth aspect, or the computer program product of the fifth aspect provided above are all adapted to perform the method provided in any one of the first aspects. Therefore, the beneficial effects achieved by the method can refer to the beneficial effects in the corresponding method, and are not described herein again.
Drawings
The drawings used in the embodiments of the present application are described below.
Fig. 1a is a schematic view of a scenario of effective omni-directional radiation power control provided in an embodiment of the present application;
fig. 1b is a schematic flowchart of an effective omni-directional radiation power control method according to an embodiment of the present application;
fig. 2 is a schematic diagram of calculating an angle of arrival of a beam according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a calculation of a down tilt according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a manner of using beam broadening according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an effective omni-directional radiation power control device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of another effective omni-directional radiation power control device according to an embodiment of the present application.
Detailed Description
The embodiments of the present application will be described below with reference to the drawings. The terminology used in the description of the embodiments herein is for the purpose of describing particular embodiments herein only and is not intended to be limiting of the application.
Referring to fig. 1a, a schematic diagram of an effective omni-directional radiation power control scenario provided in this embodiment of the present application is shown. As shown in fig. 1a, the dotted line frame indicates the beam emitted from the base station before the effective omni-directional radiation power control is performed, and at this time, the beam partially faces the sky direction and partially faces the ground direction. Wherein after active omni-directional radiation power control, the beam is concentrated in the direction towards the ground, as indicated by the beam not within the dashed box in the figure. By adopting the control means, the effective omnidirectional radiation power can be improved.
The following will describe a specific implementation of the present solution.
Referring to fig. 1b, a schematic flowchart of an effective omni-directional radiation power control method according to an embodiment of the present application is shown. The method for controlling the effective omnidirectional radiation power comprises the following steps 101-105:
101. a base station sends a measurement request to user equipment, wherein the measurement request is used for indicating the user equipment to measure and sending a beam ID, a beam level value and position information corresponding to the user equipment;
the base station may send a measurement request to a plurality of user equipments, such as a mobile phone, for example, the base station sends the measurement request to M user equipments, where M is a positive integer, and the measurement request is used to instruct each user equipment in the M user equipments to measure and send a beam ID, a beam level value, and location information of each user equipment corresponding to each user equipment to the base station.
Specifically, the base station sends a CSI measurement control message (CSI-ReportConfig- > reportQuantity- > cri-RSRP) to notify the UE to measure the beam ID and the beam level value; and after the UE finishes the measurement, reporting the measurement result through a PUSCH or PUCCH channel, and analyzing the result at the corresponding channel position by the base station.
The location information of each user equipment may be longitude and latitude where each user equipment is located.
102. The base station receives the beam ID, the beam level value and the position information which are sent by the user equipment and correspond to the user equipment respectively, and determines the downward inclination angle of the base station according to the position information of the base station, the beam ID, the beam level value and the position information which correspond to the user equipment;
the base station receives the beam ID, the beam level value and the position information which are sent by the user equipment and correspond to the user equipment respectively, and determines the downward inclination angle of the base station according to the position information of the base station, the beam ID, the beam level value and the position information which correspond to the user equipment.
When the user equipment is a multi-user equipment, after the M user equipments are respectively measured, the beam ID, the beam level value and the position of each user equipment corresponding to each user equipment are sent to the base station. And the base station further determines the downward inclination angle of the base station according to the received information and the position of the base station.
Specifically, the base station determines the downtilt of the base station according to the location of the base station, the beam ID and the beam level value corresponding to each of the M user equipments, and the location of each of the user equipments, which includes 1021-:
1021. the base station determines a beam arrival angle corresponding to each user equipment according to the position of the base station, the position of each user equipment in the M user equipment and the beam level value;
each antenna array receives a signal in a certain direction, a signal phase difference phi is generated among the antenna arrays, and an angle between the UE and the antenna can be calculated according to the phase difference and the antenna array distance d, namely a beam arrival angle theta; as shown in fig. 2, wherein the base station determines the beam arrival angle corresponding to each user equipment according to the following formula,
φ＝d×sinθ；
wherein phi is a phase difference which can be measured by a base station; d is a fixed value of base station antenna hardware; and theta is the arrival angle of the beam corresponding to the user equipment.
Further, before obtaining the arrival angle of the beam corresponding to the user equipment, the method further includes:
determining whether the M user devices are LOS users.
Here, LOS user, lineof sight, line of sight transmission of radio signal. Namely, under the condition of line-of-sight, the wireless signal is transmitted between the transmitting end and the receiving end in a straight line without obstruction.
The determination can be made by the following method:
firstly, acquiring the path loss of each user equipment;
then confirming whether the difference value between the path loss of the user equipment and the theoretical path loss is smaller than a preset value;
and if the number of the user equipment is less than the preset value, determining that the user equipment is an LOS user.
Wherein, the path loss of the user equipment is the transmission power + the transmission antenna gain + the receiving antenna gain-the beam level value;
the theoretical path loss is 32.4+20 log (D) +20 log (f), wherein D represents the 3D distance (m) between the position of the base station and the position of the user equipment, and the distance between the two points can be calculated through the longitude and latitude and the height of the two points. Wherein, the longitude and latitude and the height of the base station can be obtained by a GPS. f denotes a frequency point (GHz). The above preset value may be 1db, for example.
1022. The base station determines a reference beam ID of each user equipment according to the beam ID and the beam level value corresponding to each user equipment, and determines an angle corresponding to the reference beam ID of each user equipment according to the reference beam ID of each user equipment;
the reference beam may be an optimal beam.
The base station selects the CSI wave beam ID1 with the optimal level value and the suboptimal wave beam ID2 on the vertical plane of the antenna directional diagram according to the measurement result reported by the UE, and calculates the optimal wave beam ID actually used through interpolation. As shown in table 1.
TABLE 1
Figure BDA0002560172150000051
The base station prestores an optimal transmit-receive beam table, as shown in table 2, for determining a transmit beam ID pair and an angle α of the UE; the optimal transmit-receive beam table is calculated based on the beam pattern of the known terminal and the beam pattern of the base station, and is stored in the base station in advance. It may also be obtained by performing real-time calculation, and is not specifically limited herein.
TABLE 2
Figure BDA0002560172150000061
1023. The base station obtains initial downtilts of the M base stations according to the beam arrival angle corresponding to each user equipment in the M user equipment and the angle corresponding to the reference beam ID of each user equipment;
the base station calculates a downtilt angle β through a beam arrival angle, namely an AOA arrival angle + an elevation angle for receiving the strongest beam ID of the UE, wherein β is 90 ° - α - θ; as shown in fig. 3.
Wherein α is an angle corresponding to the beam ID when the UE is assumed to be vertically placed (the angle corresponding to each beam of the UE needs to be stored in the base station in advance); if the angle is not vertical during measurement, a corresponding inclination angle delta is added.
1024. And the base station determines the downward inclination angle of the base station according to the M initial downward inclination angles.
In order to reduce the error caused by the single UE, the downtilt measurement of the base station may use more than 3 UE measurements, and then take the average value of the downtilt. The method enables the measurement result to be more accurate.
103. The base station determines an empty beam set within a preset range according to the downward inclination angle of the base station;
this preset range may be, for example, the angular range required for WRC 19: pointing within +/-7.5 degrees of the geostationary satellite, which may also be any other predetermined range.
After the base station measures the downtilt, an interference beam set in which all channels fall within an angle range interfering with the satellite can be acquired according to a beam table prestored in the base station.
The antenna hardware and the beam forming weight of the base station can determine the beam shape and the pointing direction of the vertical plane. And meanwhile, the determined downtilt angle is combined, so that the actual pointing angle of each beam in the vertical plane can be acquired.
By the relationship between the constraint ranges of different latitudes and elevations where the base station is located, the angle of interference to the satellite at the latitude where the base station is deployed can be judged, and all beams with the beam antenna gain greater than 0 in the angle (elevation) range are regarded as beams with potential interference.
For example, if the base station is located at 31 degrees north latitude, the vertical pointing range (elevation angle) of the beam with potential interference needs to be 0-65 degrees.
104. For any wave beam A in the null wave beam set, the base station obtains the initial effective omnidirectional radiation power of the wave beam A according to the initial wave beam antenna gain and the initial transmitting power of the wave beam A;
the effective omni-directional radiation power EIRP (unit: dBm) is the beam antenna gain (unit: dBi) + the beam transmission power (unit: dBm).
105. If the initial effective omnidirectional radiation power of the beam A is larger than a preset threshold, the base station adjusts the initial effective omnidirectional radiation power of the beam A according to the preset threshold, the initial beam antenna gain of the beam A and the initial transmitting power so as to obtain the target effective omnidirectional radiation power of the beam A.
Wherein the target effective omnidirectional radiation power of the beam A is not greater than the preset threshold.
Wherein the base station adjusts the initial effective omnidirectional radiation power of the beam a according to the preset threshold, the initial beam antenna gain of the beam a, and the initial transmission power to obtain the target effective omnidirectional radiation power of the beam a, and the method includes:
the base station acquires a first value, wherein the first value is a difference value between the preset threshold value and the initial effective omnidirectional radiation power of the wave beam A;
the base station adjusting an initial beam antenna gain of the beam A to obtain a reference beam antenna gain of the beam A, wherein the reference beam antenna gain is smaller than the initial beam antenna gain;
the base station acquires a second numerical value according to the initial beam antenna gain and the reference beam antenna gain;
and if the second value is not less than the first value, the base station obtains the target effective omnidirectional radiation power of the beam A according to the reference beam antenna gain of the beam A and the initial transmission power.
The first value may be a difference between the preset threshold and the initial effective omnidirectional radiation power of the beam a.
The base station adjusts the beam antenna gain of the beam a, and then obtains a second value according to the initial beam antenna gain and the reference beam antenna gain, where the second value may be a difference between the initial beam antenna gain and the reference beam antenna gain. The base station confirms whether the second numerical value is not less than the first numerical value; if the second value is not less than the first value, the base station stops adjusting the initial effective omnidirectional radiation power of the beam A.
If the second value is smaller than the first value, the base station determines the reference transmission power of the beam A according to the first value, the second value and the initial transmission power of the beam A; and the base station obtains the target effective omnidirectional radiation power of the wave beam A according to the reference wave beam antenna gain and the reference emission power of the wave beam A.
Wherein the base station transmits the beam A according to the reference transmission power of the beam A.
The base station determines the reference transmit power of the beam a according to the first value, the second value and the initial transmit power of the beam a, for example, the base station obtains a difference between the first value and the second value, and then the base station determines the reference transmit power of the beam a according to the difference and the initial transmit power of the beam a, and the reference transmit power of the beam a is obtained by subtracting the difference from the initial transmit power of the beam a. The above difference is a positive number. For example, each channel of the SSB/CSIRS/TRS/PDCCH/PDSCH is controlled according to the above method to generate an interference beam set requiring power reduction as an input for performing subsequent beam level EIRP control.
When the transmission power is adjusted, the method may include: adjustment of the transmit power of the static beams and adjustment of the transmit power of the dynamic beams. The static beams refer to SSB, TRS and CSI channel beams, and the beams determined according to the base station configuration do not change with the environment and the movement of the UE. The dynamic wave beams refer to PDCCH and PDSCH channel wave beams, and the dynamic wave beams change in real time according to different configurations of a base station and the channel environment measured by UE.
The base station can send the down power value calculated by each time slot to a baseband, and the baseband transmits the down power value to the power amplification module of the AAU to execute the back-off value of the power self-adaptive control. The BBU may be responsible for each beam reduction power calculation, weight calculation, and downtilt calculation process. Among other things, the AAU may be responsible for performing transmit power, beam transmission procedures, and the like.
That is to say, according to the scheme, when the effective omnidirectional radiation power of the beam exceeds a preset threshold, the antenna gain of the beam is preferentially adjusted, and if the adjusted effective omnidirectional radiation power does not exceed the preset threshold, the adjustment is stopped. And if the adjusted beam still exceeds the preset threshold value, adjusting the transmitting power of the beam. By the means, the purpose of self-adaptive adjustment of the effective omnidirectional radiation power EIRP of the wave beam is achieved.
According to the scheme, based on the measurement result of the user equipment, when the effective omnidirectional radiation power of the wave beam exceeds the preset threshold value, the antenna gain of the wave beam and/or the transmitting power of the wave beam can be adjusted, so that the adjusted effective omnidirectional radiation power does not exceed the preset threshold value. By the means, the purpose of self-adaptive adjustment of the effective omnidirectional radiation power EIRP of the wave beam is achieved.
On the other hand, the scheme reports the measurement information through the user equipment, so that the base station can automatically realize the measurement of the downward inclination angle through an algorithm, and the cost of manual measurement input is reduced.
According to the scheme, the EIRP can be adaptively controlled according to different inclination angles of the base station; wherein the coverage performance to terrestrial users is minimized while satisfying the EIRP threshold. In addition, the scheme can realize the independent control of each beam in a refined mode, and the minimum control precision reaches 0.1 dBm.
The following is a way to reduce the gain of the beam antenna provided by the embodiments of the present application.
Wherein, the gain control of the beam antenna is performed according to the beam level, the channel division and the main grating lobe division, for example, the combination is realized according to the following table 3, and the aim of reducing the empty EIRP is achieved.
TABLE 3
Figure BDA0002560172150000081
The base station can confirm whether the angle corresponding to the wave beam A corresponds to the grating lobe; if so, the base station determines the reference beam antenna gain of the beam a according to the manner of technical implementation 2 and technical implementation 1 as shown in table 3. Wherein 2&1 indicates that 2 technologies are supported and executed according to the sequence, if the technology is executed first to realize 2, and if the calculation does not meet the EIRP threshold requirement, the technology is executed again to realize 1.
If the angle corresponding to the beam A corresponds to a main lobe, if the base station determines that the beam is a static beam, determining the reference beam antenna gain of the beam A according to the mode of technical implementation 1; and if the base station determines that the beam is a dynamic beam, determining the reference beam antenna gain of the beam A according to the modes of technical implementation 1 and technical implementation 3.
Wherein, the technical implementation 1 means that the antenna gain is reduced by adopting a beam broadening mode. Turning off part of the TRX front while transmitting the beam, as shown in fig. 4, achieves the goal of spreading the beam. Broadening achieves the goal of reducing the beam antenna gain, thereby indirectly reducing the EIRP (e.g., 1 vertical broadening, 3dB reduction in beam gain).
Technical implementation 2 refers to the reduction of antenna gain by static beam zero forcing. If the calculated antenna gain + scheduling power of the null angle exceeds the WRC19 threshold, the total EIRP can be indirectly reduced by suppressing the antenna gain of the null angle of the beam (static beam forcing to zero). The static beam zero forcing method is to find a cancellation directional diagram function through an amplitude modulation and phase modulation cancellation algorithm and form a null in a specified direction.
Wherein, the array element weight is at the peak value wave beam weight anBased on the gain of a suppression amount pnAs follows:
wn＝an+pn；
wnrepresents the final antenna gain, anRepresents a radicalBase antenna gain, pnA cancellation function is represented.
Antenna pattern gain after cancellation algorithm:
antenna pattern gain
Figure BDA0002560172150000082
Wherein, N represents the number of TRXs, u represents the relative wavelength multiple of the array pitch, u is d/lambda, d is the array pitch, and lambda represents the wavelength.
Technical implementation 3 refers to the reduction of antenna gain by dynamic beam zero forcing. Similar to the technical implementation 2, zero is also forced in a certain direction, but the difference is that the zero is forced by a beam through a measurement value (mainly referring to a weight value of the UE PMI/SRS measurement feedback) reported by the UE in real time, and the method can better match the change of the channel environment.
Wherein, the PMI measurement procedure includes:
step1, the base station informs the UE to measure through a CSI measurement control message (CSI-report _ confirm- > reportQuantity- > cri-RI-PMI-CQI);
step2, reporting the measurement result in a PUSCH channel after the UE passes the CSI measurement;
step3, the base station selects the weight of PMI according to the PUSCH analysis measurement result;
step4: and according to the weight value used by each beam, and then realizing 2 static beams zero forcing according to the technology to carry out zero forcing operation.
The measurement procedures for SRS may include:
step1, the base station instructs the UE to send SRS symbol at a certain position (related measurement parameter SRS-Config) through an air interface cell;
step2, the UE sends signals according to the base station indication position;
step3, the base station measures the real-time channel quality of the SRS symbols at the positions to obtain a channel estimation matrix; obtaining a beam forming weight through singular value SVD decomposition;
step4, the static beam zero forcing is realized according to the technology to perform zero forcing operation.
The scheme can accurately control the antenna gain of each beam through the beam widening, static beam zero forcing and dynamic beam zero forcing technologies, thereby indirectly controlling the EIRP, and the precision can reach 0.1 dBm. The purpose of effectively controlling the EIRP is achieved through the accurate antenna gain control of the beam level.
An embodiment of the present application further provides an effective omni-directional radiation power control apparatus, as shown in fig. 5, which includes a sending module 501, a receiving module 502, a determining module 503, a determining module 504, and an adjusting module 505, and the specific details are as follows:
a sending module 501, configured to send a measurement request to a user equipment, where the measurement request is used to instruct the user equipment to measure and send a beam ID, a beam level value, and location information corresponding to the user equipment;
a receiving module 502, configured to receive a beam ID, a beam level value, and location information corresponding to the ue sent by the ue, and determine a downtilt of the apparatus according to the location information of the apparatus, the beam ID, the beam level value, and the location information corresponding to the ue;
a determining module 503, configured to determine a null beam set within a preset range according to a downtilt of the apparatus;
an obtaining module 504, configured to obtain, for any beam a in the null beam set, an initial effective omnidirectional radiation power of the beam a according to an initial beam antenna gain and an initial transmission power of the beam a;
an adjusting module 505, configured to adjust the initial effective omnidirectional radiation power of the beam a according to a preset threshold, the initial beam antenna gain of the beam a, and the initial transmission power if the initial effective omnidirectional radiation power of the beam a is greater than the preset threshold, so as to obtain a target effective omnidirectional radiation power of the beam a.
Wherein the target effective omnidirectional radiation power of the beam A is not greater than the preset threshold.
The sending module 501 is specifically configured to send the measurement request to M user equipments, where M is a positive integer, and the receiving module 502 is specifically configured to:
determining a beam arrival angle corresponding to each user equipment according to the position information of the device, the position information of each user equipment in the M user equipments and the beam level value;
determining a reference beam ID of each user equipment according to the beam ID and the beam level value corresponding to each user equipment, and determining an angle corresponding to the reference beam ID of each user equipment according to the reference beam ID of each user equipment;
obtaining initial downtilts of the M devices according to the beam arrival angle corresponding to each user equipment in the M user equipment and the angle corresponding to the reference beam ID of each user equipment;
determining a down tilt of the device from the M initial down tilts.
The adjusting module 505 is specifically configured to:
acquiring a first value, wherein the first value is a difference value between the preset threshold and the initial effective omnidirectional radiation power of the beam A;
adjusting an initial beam antenna gain of the beam A to obtain a reference beam antenna gain of the beam A, wherein the reference beam antenna gain is smaller than the initial beam antenna gain;
acquiring a second numerical value according to the initial beam antenna gain and the reference beam antenna gain;
and if the second value is not less than the first value, obtaining the target effective omnidirectional radiation power of the beam A according to the reference beam antenna gain of the beam A and the initial transmission power.
Wherein, if the second value is smaller than the first value, the adjusting module is specifically configured to: determining a reference transmit power of the beam A according to the first value, the second value and the initial transmit power of the beam A;
and obtaining the target effective omnidirectional radiation power of the wave beam A according to the reference wave beam antenna gain and the reference emission power of the wave beam A.
Referring to fig. 6, a schematic structural diagram of another effective omni-directional radiation power control apparatus provided in the embodiment of the present application is shown. Based on the same concept of the control method in the above embodiment, as shown in fig. 6, the embodiment of the present application further provides a control device 600, which can be applied to the control method shown in fig. 1 b. The control device 600 includes:
a sending unit 61, configured to send a measurement request to a user equipment, where the measurement request is used to instruct the user equipment to measure and send a beam ID, a beam level value, and location information corresponding to the user equipment.
A receiving unit 62, configured to receive the beam ID, the beam level value, and the location information corresponding to the user equipment sent by the user equipment, respectively.
A processing unit 63, configured to determine a downtilt of the apparatus according to the position information of the apparatus, the beam ID corresponding to the user equipment, the beam level value, and the position information; determining an empty beam set within a preset range according to the downward inclination angle of the device; for any wave beam A in the null wave beam set, obtaining the initial effective omnidirectional radiation power of the wave beam A according to the initial wave beam antenna gain and the initial transmitting power of the wave beam A; if the initial effective omnidirectional radiation power of the beam A is larger than a preset threshold, adjusting the initial effective omnidirectional radiation power of the beam A according to the preset threshold, the initial beam antenna gain of the beam A and the initial transmission power so as to obtain the target effective omnidirectional radiation power of the beam A.
The embodiment of the application also provides a control device, and the control device is used for executing the control method. Some or all of the above control methods may be implemented by hardware or may be implemented by software.
Optionally, the control device may be a chip or an integrated circuit when implemented.
Optionally, when part or all of the control method of the above embodiment is implemented by software, the control device includes: a memory for storing a program; a processor for executing the program stored in the memory, when the program is executed, the communication apparatus is enabled to implement the communication method provided by the above-mentioned embodiment.
Alternatively, the memory may be a physically separate unit or may be integrated with the processor.
Alternatively, when part or all of the control method of the above embodiment is implemented by software, the control device may only include a processor. The memory for storing the program is located outside the control device, and the processor is connected with the memory through a circuit/wire for reading and executing the program stored in the memory.
The processor may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP.
The processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
The memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.
Embodiments of the present application also provide a computer-readable storage medium having stored therein instructions, which when executed on a computer or processor, cause the computer or processor to perform one or more steps of any one of the methods described above.
The embodiment of the application also provides a computer program product containing instructions. The computer program product, when run on a computer or processor, causes the computer or processor to perform one or more steps of any of the methods described above.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optics, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
One of ordinary skill in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer-readable storage medium, and when executed, may include the processes of the above method embodiments. And the aforementioned storage medium includes: various media capable of storing program codes, such as ROM or RAM, magnetic or optical disks, etc.
The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the embodiments of the present application should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims (12)

1. An effective omni-directional radiation power control method, comprising:
a base station sends a measurement request to user equipment, wherein the measurement request is used for indicating the user equipment to measure and sending a beam ID, a beam level value and position information corresponding to the user equipment;
the base station receives the beam ID, the beam level value and the position information which are sent by the user equipment and correspond to the user equipment respectively, and determines the downward inclination angle of the base station according to the position information of the base station, the beam ID, the beam level value and the position information which correspond to the user equipment;
the base station determines an empty beam set within a preset range according to the downward inclination angle of the base station;
for any wave beam A in the null wave beam set, the base station obtains the initial effective omnidirectional radiation power of the wave beam A according to the initial wave beam antenna gain and the initial transmitting power of the wave beam A;
if the initial effective omnidirectional radiation power of the beam A is larger than a preset threshold, the base station adjusts the initial effective omnidirectional radiation power of the beam A according to the preset threshold, the initial beam antenna gain of the beam A and the initial transmitting power so as to obtain the target effective omnidirectional radiation power of the beam A.
2. The method of claim 1, wherein the target effective omni-directional radiation power of beam A is not greater than the preset threshold.
3. The method of claim 1 or 2, wherein the base station sends the measurement request to M user equipments, where M is a positive integer, and the base station determines a downtilt of the base station according to the location information of the base station, the beam ID corresponding to the user equipment, the beam level value, and the location information, and comprises:
the base station determines a beam arrival angle corresponding to each user equipment according to the position information of the base station, the position information of each user equipment in the M user equipment and the beam level value;
the base station determines a reference beam ID of each user equipment according to the beam ID and the beam level value corresponding to each user equipment, and determines an angle corresponding to the reference beam ID of each user equipment according to the reference beam ID of each user equipment;
the base station obtains initial downtilts of the M base stations according to the beam arrival angle corresponding to each user equipment in the M user equipment and the angle corresponding to the reference beam ID of each user equipment;
and the base station determines the downward inclination angle of the base station according to the M initial downward inclination angles.
4. The method according to any one of claims 1 to 3, wherein the base station adjusts the initial effective omnidirectional radiation power of the beam A according to the preset threshold, the initial beam antenna gain and the initial transmission power of the beam A to obtain the target effective omnidirectional radiation power of the beam A, comprising:
the base station acquires a first value, wherein the first value is a difference value between the preset threshold value and the initial effective omnidirectional radiation power of the wave beam A;
the base station adjusting an initial beam antenna gain of the beam A to obtain a reference beam antenna gain of the beam A, wherein the reference beam antenna gain is smaller than the initial beam antenna gain;
the base station acquires a second numerical value according to the initial beam antenna gain and the reference beam antenna gain;
and if the second value is not less than the first value, the base station obtains the target effective omnidirectional radiation power of the beam A according to the reference beam antenna gain of the beam A and the initial transmission power.
5. The method of claim 4, further comprising:
if the second value is smaller than the first value, the base station determines the reference transmission power of the beam A according to the first value, the second value and the initial transmission power of the beam A;
and the base station obtains the target effective omnidirectional radiation power of the wave beam A according to the reference wave beam antenna gain and the reference emission power of the wave beam A.
6. An apparatus for efficient omni-directional radiation power control, comprising:
a sending module, configured to send a measurement request to a user equipment, where the measurement request is used to instruct the user equipment to measure and send a beam ID, a beam level value, and location information corresponding to the user equipment;
a receiving module, configured to receive a beam ID, a beam level value, and location information corresponding to the user equipment sent by the user equipment, and determine a downtilt of the apparatus according to the location information of the apparatus, the beam ID, the beam level value, and the location information corresponding to the user equipment;
the determining module is used for determining a null beam set in a preset range according to the downward inclination angle of the device;
an obtaining module, configured to obtain, for any beam a in the null beam set, an initial effective omnidirectional radiation power of the beam a according to an initial beam antenna gain and an initial transmission power of the beam a;
and an adjusting module, configured to adjust the initial effective omnidirectional radiation power of the beam a according to a preset threshold, the initial beam antenna gain of the beam a, and the initial transmission power if the initial effective omnidirectional radiation power of the beam a is greater than the preset threshold, so as to obtain a target effective omnidirectional radiation power of the beam a.
7. The apparatus of claim 6, wherein the target effective omni-directional radiation power of beam A is not greater than the preset threshold.
8. The apparatus according to claim 6 or 7, wherein the sending module is specifically configured to send the measurement request to M user equipments, where M is a positive integer, and the receiving module is specifically configured to:
determining a beam arrival angle corresponding to each user equipment according to the position information of the device, the position information of each user equipment in the M user equipments and the beam level value;
determining a reference beam ID of each user equipment according to the beam ID and the beam level value corresponding to each user equipment, and determining an angle corresponding to the reference beam ID of each user equipment according to the reference beam ID of each user equipment;
obtaining initial downtilts of the M devices according to the beam arrival angle corresponding to each user equipment in the M user equipment and the angle corresponding to the reference beam ID of each user equipment;
determining a down tilt of the device from the M initial down tilts.
9. The apparatus according to any one of claims 6 to 8, wherein the adjustment module is specifically configured to:
acquiring a first value, wherein the first value is a difference value between the preset threshold and the initial effective omnidirectional radiation power of the beam A;
adjusting an initial beam antenna gain of the beam A to obtain a reference beam antenna gain of the beam A, wherein the reference beam antenna gain is smaller than the initial beam antenna gain;
acquiring a second numerical value according to the initial beam antenna gain and the reference beam antenna gain;
and if the second value is not less than the first value, obtaining the target effective omnidirectional radiation power of the beam A according to the reference beam antenna gain of the beam A and the initial transmission power.
10. The apparatus of claim 9, further comprising:
if the second value is smaller than the first value, the adjusting module is specifically configured to: determining a reference transmit power of the beam A according to the first value, the second value and the initial transmit power of the beam A;
and obtaining the target effective omnidirectional radiation power of the wave beam A according to the reference wave beam antenna gain and the reference emission power of the wave beam A.
11. A control device comprising a processor and a transceiver, the processor being coupled to the transceiver and the processor being configured to execute a computer program or instructions to control the transceiver to receive and transmit information; the computer program or instructions, when executed by the processor, further cause the processor to implement the method of any of claims 1 to 5.
12. A computer-readable storage medium, characterized in that it stores a computer program which is executed by a processor to implement the method of any one of claims 1 to 5.
CN202010603886.4A 2020-06-29 2020-06-29 Method, apparatus and storage medium for controlling effective omnidirectional radiation power Pending CN113939017A (en)

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