CN112751601A - Communication control method, communication control device, base station, and storage medium - Google Patents

Communication control method, communication control device, base station, and storage medium Download PDF

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Publication number
CN112751601A
CN112751601A CN201911056112.8A CN201911056112A CN112751601A CN 112751601 A CN112751601 A CN 112751601A CN 201911056112 A CN201911056112 A CN 201911056112A CN 112751601 A CN112751601 A CN 112751601A
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antennas
base station
total
target
quantization bit
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卢欣桐
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2020/125568 priority patent/WO2021083373A1/en
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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
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
    • H04B7/0693—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas switching off a diversity branch, e.g. to save power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • 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
    • 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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • 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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/0874—Hybrid systems, i.e. switching and combining using subgroups of receive antennas
    • H04B7/0877—Hybrid systems, i.e. switching and combining using subgroups of receive antennas switching off a diversity branch, e.g. to save power

Abstract

The embodiment of the invention provides a communication control method, a communication control device, a base station and a storage medium, wherein the number of the antennas to be selected is less than or equal to the maximum number of the antennas through calculating the ADC quantization bit number and the total spectrum efficiency of an analog-digital converter corresponding to the number of the antennas to be selected, and the maximum number of the antennas is determined based on the preset lowest ADC quantization bit number and the preset maximum system total power consumption; determining the number of target antennas from the number of antennas to be selected based on the total spectrum efficiency corresponding to the number of antennas to be selected; the communication of the base station is controlled based on the target antenna number and the target ADC quantization bit number corresponding to the target antenna number, and in some implementation processes, the total spectral efficiency of the system can be ensured, so that the condition that the ADC precision is reduced and the spectral efficiency of the system is low is avoided.

Description

Communication control method, communication control device, base station, and storage medium
Technical Field
Embodiments of the present invention relate to, but are not limited to, the field of communications, and in particular, but not limited to, a communication control method, apparatus, base station, and storage medium.
Background
To meet the demand for greater capacity in the fifth generation Wireless communication Systems (5G,5th-generation Wireless Systems), there are typically three advances, including more frequency spectrum, a greater number of base stations per area, and higher spectral efficiency per cell. In order to effectively improve the spectrum efficiency of each cell, a massive MIMO (Multiple-input and Multiple-output) scheme may be adopted. In massive MIMO communication systems, one side of the wireless communication link (typically the base station side) is equipped with a large number (100 or more) of individually controllable and adaptively operable antenna elements, concentrating the transmission and reception of signal energy into a smaller spatial area, effectively improving throughput and energy efficiency.
In a massive MIMO system, as the number of base station antennas increases, the cost and total power consumption of the system due to signal processing and hardware circuits, etc. also increase. To reduce cost and overall system power consumption, the accuracy of the hardware devices may generally be reduced to reduce cost and power consumption. Among them, the accuracy of ADC (Analog to Digital Converter) is one of the important factors of hardware accuracy. However, reducing the accuracy of the ADC in order to reduce the total power consumption of the system results in a less efficient system spectrum, which affects communication.
Disclosure of Invention
The communication control method, the communication control device, the base station and the storage medium provided by the embodiment of the invention mainly solve the technical problems that the total power consumption of a system is reduced, and the ADC precision is reduced, so that the spectrum efficiency of the system is lower.
To solve the foregoing technical problem, an embodiment of the present invention provides a communication control method, including:
calculating the ADC quantization bit number and the total spectrum efficiency of an analog-digital converter corresponding to the number of antennas to be selected, wherein the number of antennas to be selected is less than or equal to the maximum number of antennas, and the maximum number of antennas is determined based on the preset lowest ADC quantization bit number and the preset maximum system total power consumption;
determining a target antenna number from each antenna number to be selected based on the total spectrum efficiency corresponding to the antenna number to be selected;
and controlling the communication of the base station based on the target antenna number and the target ADC quantization bit number corresponding to the target antenna number.
An embodiment of the present invention further provides a communication control apparatus, including:
the device comprises a calculation module, a selection module and a selection module, wherein the calculation module is used for calculating the ADC quantization bit number and the total spectrum efficiency of an analog-digital converter corresponding to the number of antennas to be selected, the number of the antennas to be selected is smaller than the maximum number of the antennas, and the maximum number of the antennas is determined based on the preset lowest ADC quantization bit number and the preset maximum system total power consumption;
a determining module, configured to determine a target antenna number from each of the antennas to be selected based on a total spectrum efficiency corresponding to the number of antennas to be selected
And the control module is used for controlling the communication of the base station based on the target antenna number and the target ADC quantization bit number corresponding to the target antenna number.
An embodiment of the present invention further provides a base station, including: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute one or more computer programs stored in the memory to implement the steps of the above-described communication control method.
Embodiments of the present invention also provide a storage medium, which stores one or more programs, where the one or more programs are executable by one or more processors to implement the steps of the communication control method as described above.
The invention has the beneficial effects that:
according to the communication control method, the communication control device, the base station and the storage medium provided by the embodiment of the invention, the number of the to-be-selected antennas is less than or equal to the maximum number of the antennas through calculating the ADC quantization bit number and the total spectrum efficiency of the analog-digital converter corresponding to the number of the to-be-selected antennas, and the maximum number of the antennas is determined based on the preset lowest ADC quantization bit number and the preset maximum system total power consumption; determining the number of target antennas from the number of antennas to be selected based on the total spectrum efficiency corresponding to the number of antennas to be selected; the communication of the base station is controlled based on the target antenna number and the target ADC quantization bit number corresponding to the target antenna number, and in some implementation processes, the total spectral efficiency of the system can be ensured, so that the condition that the ADC precision is reduced and the spectral efficiency of the system is low is avoided.
Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a flowchart of a communication control method according to a first embodiment of the present invention;
FIG. 2 is a flowchart of a total spectral efficiency determination according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating a process of determining the number of target antennas according to a first embodiment of the present invention;
fig. 4 is a flowchart of a communication control method according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a communication control apparatus according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a base station according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
in order to reduce the total power consumption of the system, the ADC accuracy is reduced, which results in a reduction in the spectral efficiency of the system. In order to solve the above problem, an embodiment of the present invention provides a communication control method, please refer to fig. 1, where the communication control method includes:
s101, calculating the ADC quantization bit number and the total spectrum efficiency corresponding to the number of the antennas to be selected.
It should be understood that an ADC is a device for converting a continuous analog signal into a discontinuous digital signal, and in general, the output of the ADC is binary with a certain correspondence to the input of the ADC, and a certain error is introduced in the conversion process from a continuous variable to a discontinuous variable, so that a certain quantization noise is generated.
In the embodiment of the invention, the number of the antennas to be selected is less than or equal to the maximum number M of the antennasmax. For example, assuming that the maximum number of antennas is 3, the number of antennas to be selected may be 1, or 2, or 3. The maximum antenna number is determined based on a preset minimum ADC quantization bit number and a preset maximum system total power consumption. Due to the need for rootsAccording to the maximum number of antennas MmaxTherefore, before calculating the ADC quantization bit number and the total spectral efficiency corresponding to the number of antennas to be selected, the maximum number of antennas should be determined based on the preset minimum ADC quantization bit number and the preset maximum system total power consumption. And for the preset minimum ADC quantization bit number, the number can be flexibly set according to actual requirements. In order to reduce the total power consumption of the system, the preset minimum number of ADC quantization bits may be set to be smaller, for example, the preset minimum number of ADC quantization bits may be set to be the minimum number of quantization bits supported by the base station ADC (assuming that the number of quantization bits supported by the ADC is 2, 3, or 4, the preset minimum number of ADC quantization bits may be set to be 2), or the preset minimum number of ADC quantization bits may be set to be 1. Alternatively, to meet the accuracy of the ADC, the preset lowest ADC quantization bit number may be set a little higher. For the preset maximum system total power consumption, the method can be flexibly set according to actual needs. The equation relationship among the ADC quantization bit number b, the antenna number M, and the total power consumption P of the system is:
Figure BDA0002256603370000041
where η is the efficiency, p, of the power amplifier of the terminal serving the base stationiTransmission power, P, of the ith terminal serving the base station to the base stationSYNFor power consumption, P, generated by an oscillator of a base stationFIXFor a fixed power consumption, N is the number of terminals currently served by the base station, wherein the terminals served by the base station may be single antenna terminals, PUEThe power consumption resulting from operating the circuit elements connected to the antenna for each terminal currently served by the base station,
Figure BDA0002256603370000042
the power consumption generated by the circuit elements connected to each antenna for the base station to operate,
Figure BDA0002256603370000043
d is a fixed value which is more than or equal to 0 for the power consumption generated by each ADC,
Figure BDA0002256603370000044
is a fixed value more than or equal to 0, for example, the value range of D can be [10^ -8,10^ -7 ]]，
Figure BDA0002256603370000051
Can be in the range of [1,2 ]]And L is the calculation efficiency.
Based on the above formula, one can obtain:
Figure BDA0002256603370000052
it can be seen from the above formula that the larger the total power consumption P of the system, the smaller the quantization bit number b of the ADC, and the larger the number M of antennas. Therefore, the ADC quantization bit number b is equal to the preset lowest ADC quantization bit number bminThe system total power consumption P is the preset maximum system total power consumption gamma and is substituted into the formula, and the maximum antenna number M can be obtainedmaxWherein, the lowest ADC quantization bit number b is presetminPresetting maximum system total power consumption gamma and maximum antenna number MmaxThe relationship between them is as follows:
Figure BDA0002256603370000053
in the embodiment of the present invention, the relationship between the number of antennas M and the number of quantization bits b of the ADC is as follows:
Figure BDA0002256603370000054
wherein the W function is the inverse of f (W), f (W) w.ewW is an arbitrary plural number, ewAs an exponential function, x is calculated according to the following formula:
Figure BDA0002256603370000055
that is, the relationship between the number of antennas M and the number of ADC quantization bits b is as follows:
Figure BDA0002256603370000056
when the ADC quantization bit number b (M) corresponding to the number M of antennas to be selected is calculated, M may be substituted into the above formula to calculate b (M).
In the embodiment of the present invention, when calculating the total spectrum efficiency corresponding to the number of antennas to be selected, referring to fig. 2, the method includes:
s201, determining the uplink spectrum efficiency of each terminal currently served by the base station based on the number of antennas to be selected and the quantization bit number corresponding to the number of antennas to be selected.
In the embodiment of the present invention, the relationship between the number M of antennas and the uplink spectrum efficiency of the nth terminal currently served by the base station is as follows:
Figure BDA0002256603370000061
wherein the content of the first and second substances,
Figure BDA0002256603370000062
therefore, the approximation of the uplink spectral efficiency is:
Figure BDA0002256603370000063
wherein T is channel coherence time, tau is the length of pilot frequency sequence, alpha is distortion coefficient, alpha is determined based on ADC quantization bit number corresponding to M, pdAverage transmission power, p, for each terminal currently served by the base stationtFor the transmission power of each pilot symbol, betanIs a large scale fading coefficient, betaiA large-scale fading coefficient for an ith terminal serving the base station, Δ being determined according to the following formula:
Figure BDA0002256603370000064
based on the formula, calculating the uplink spectrum efficiency R of the nth terminal corresponding to the number M of the antennas to be selectedn(m)。
S202, determining total spectrum efficiency based on uplink spectrum efficiency of each terminal.
That is, the total spectral efficiency is the sum of the uplink spectral efficiencies of all terminals served by the base station, that is,
Figure BDA0002256603370000071
wherein R issumTo the overall spectral efficiency.
S102, determining the number of target antennas from the number of antennas to be selected based on the total spectrum efficiency corresponding to the number of antennas to be selected.
In the embodiment of the present invention, when the target number of antennas is determined, the number of antennas to be selected, of which the total spectrum efficiency is greater than the preset total spectrum efficiency threshold, may be selected from the number of antennas to be selected as the target number of antennas based on the total spectrum efficiency corresponding to the number of antennas to be selected. That is to say, in the embodiment of the present invention, a total spectrum efficiency threshold may be preset, and then, when the target number of antennas is selected, the number of antennas whose corresponding total spectrum efficiency is greater than the total spectrum efficiency threshold is selected from the number of antennas to be selected as the target number of antennas, so that the total spectrum efficiency of the system may be ensured. For example, assuming that the maximum number of antennas is 3, there are 3 antennas to be selected, which are 1,2, and 3, respectively, assuming that the corresponding total spectral efficiency is greater than the preset total spectral efficiency threshold value when the number of antennas is 3, the corresponding total spectral efficiency is less than the preset total spectral efficiency threshold value when the number of antennas is 1, and selecting 3 as the target number of antennas when the corresponding total spectral efficiency is less than the preset total spectral efficiency threshold value when the number of antennas is 2. If there are at least two antennas to be selected, and the total spectral efficiencies corresponding to the at least two antennas to be selected are all greater than the total spectral efficiency threshold, the number of antennas to be selected with the smallest numerical value (or the largest numerical value) can be selected as the target number of antennas, and here, the number of antennas to be selected with the smallest numerical value is taken as an example to be described, for example, assuming that the maximum number of antennas is 4, the number of antennas to be selected is 1,2, 3, 4, respectively, assuming that the total spectral efficiency corresponding to the number of antennas is greater than the total spectral efficiency threshold when the number of antennas is 1 or 3, and assuming that the total spectral efficiency corresponding to the number of antennas is less than the total spectral efficiency threshold when the number of antennas is 2 or 4, then 1 is selected as the target number of antennas. Or, assuming that there are at least two antennas to be selected, the corresponding total spectral efficiency is greater than the total spectral efficiency threshold, the number of antennas to be selected, from which the corresponding number of quantization bits of the ADC is the smallest (or the largest), may be selected as the target number of antennas, where, taking the example of selecting the number of antennas to be selected with the smallest number of quantization bits of the corresponding ADC as the target number of antennas, for example, assuming that the maximum number of antennas is 3, the number of antennas to be selected is 1,2, 3, respectively, assuming that when the number of antennas is 1 or 2, the corresponding total spectral efficiency is larger than the total spectral efficiency threshold value, when the number of the antennae is 2, the corresponding total spectral efficiency is smaller than the total spectral efficiency threshold value, when the number of antennas is 1, the corresponding ADC quantization bit number is 2, and when the number of antennas is 2, the corresponding ADC quantization bit number is 4, then 1 may be selected as the target number of antennas.
In the embodiment of the invention, when the target number of antennas is determined, the number of antennas to be selected with the maximum total spectrum efficiency can be selected from the number of antennas to be selected as the target number of antennas. For example, assuming that the maximum number of antennas is 4, the number of antennas to be selected is 1,2, 3, 4, respectively, and the corresponding total spectral efficiencies are R, respectivelysum1，Rsum2，Rsum3，Rsum4, wherein Rsum4＞Rsum2＞R sum1＞RsumAnd 3, the number of the target antennas is 4. When the number of antennas with the maximum total spectrum efficiency is selected from the number of antennas to be selected as the target number of antennas, as shown in fig. 3, the number of antennas may be determined according to the following iterative process:
S301、M＝1，
Figure BDA0002256603370000081
setting the initial value of the number M of the antennas to be 1 and the maximum value of the total spectral efficiency
Figure BDA0002256603370000082
Is 0
S302、M≤Mmax
If yes, turning to S303; if not, go to S307.
S303, calculating the ADC quantization bit number b (M) corresponding to M.
S304, calculating the total spectral efficiency R corresponding to Msum(b(M),M)。
S305、
Figure BDA0002256603370000083
If yes, turning to S306; if not, go to S307.
S306、
Figure BDA0002256603370000084
In that
Figure BDA0002256603370000085
R is to besum(b), (M), values of M) are assigned
Figure BDA0002256603370000086
Thereby ensuring
Figure BDA0002256603370000087
Is always at a maximum.
S307、M＝M+1。
And go to S303.
S308, outputting
Figure BDA0002256603370000088
The corresponding number of antennas is taken as the target number of antennas.
And S103, controlling the communication of the base station based on the target number of antennas and the target ADC quantization bit number corresponding to the target number of antennas.
After determining the target number of antennas, the base station communicates with its serving terminals based on the target number of antennas and the target number of ADC quantization bits corresponding to the target number of antennas. For example, assuming that the target number of antennas is 4 and the target number of ADC quantization bits is 2, the base station starts 4 antennas for communication, and the ADC in the base station processes data based on the target number of ADC quantization bits 2.
According to the communication control method provided by the embodiment of the invention, the number of quantization bits of an analog-digital converter (ADC) corresponding to the number of antennas to be selected and the total spectrum efficiency are calculated, the number of the antennas to be selected is less than or equal to the maximum number of antennas, and the maximum number of antennas is determined based on the preset lowest ADC quantization bit number and the preset maximum system total power consumption; determining the number of target antennas from the number of antennas to be selected based on the total spectrum efficiency corresponding to the number of antennas to be selected; the communication of the base station is controlled based on the target antenna number and the target ADC quantization bit number corresponding to the target antenna number, and in some implementation processes, the total spectral efficiency of the system can be ensured, so that the condition that the ADC precision is reduced and the spectral efficiency of the system is low is avoided.
Example two:
for a better understanding of the present invention, embodiments of the present invention are described with reference to more specific examples. Referring to fig. 4, fig. 4 is a flowchart of a communication control method according to an embodiment of the present invention, including:
s401, setting the preset maximum system total power consumption and the preset minimum ADC quantization bit number.
Presetting maximum system total power consumption gamma and presetting minimum ADC quantization bit number bminCan be flexibly set according to actual needs, for example, bminMay be set to 1.
S402, determining the maximum antenna number based on the preset maximum system total power consumption and the preset minimum ADC quantization bit number.
The relationship among the number of antennas M, the total power P of the system and the quantization bit number of the ADC is as follows:
Figure BDA0002256603370000091
where η is the efficiency, p, of the power amplifier of the terminal serving the base stationiTransmission power, P, of the ith terminal serving the base station to the base stationSYNBeing base stationsPower consumption, P, generated by the oscillatorFIXFor a fixed power consumption, N is the number of terminals currently served by the base station, wherein the terminals served by the base station may be single antenna terminals, PUEThe power consumption resulting from operating the circuit elements connected to the antenna for each terminal currently served by the base station,
Figure BDA0002256603370000101
the power consumption generated by the circuit elements connected to each antenna for the base station to operate,
Figure BDA0002256603370000102
d is a fixed value which is more than or equal to 0 for the power consumption generated by each ADC,
Figure BDA0002256603370000103
is a fixed value more than or equal to 0, for example, the value range of D can be [10^ -8,10^ -7 ]]，
Figure BDA0002256603370000104
Can be in the range of [1,2 ]]And L is the calculation efficiency.
Setting the ADC quantization bit number b as the preset lowest ADC quantization bit number bminThe system total power consumption P is the preset maximum system total power consumption gamma and is substituted into the formula, and the maximum antenna number M can be obtainedmax：
Figure BDA0002256603370000105
S403, setting the maximum value of the total spectrum efficiency of the base station
Figure BDA0002256603370000106
Is 0, the number of antennas M is 1.
S404、M≤Mmax。
If yes, go to S405; if not, go to S410.
S405, calculating the number b (M) of ADC quantization bits corresponding to M
In the embodiment of the present invention, the relationship between the ADC quantization bit number b and the antenna number M is as follows:
Figure BDA0002256603370000107
wherein the W function is the inverse of f (W), f (W) w.ewW is an arbitrary plural number, ewIs an exponential function.
S406, calculating the total spectral efficiency R corresponding to Msum(b(M),M).
Total spectral efficiency
Figure BDA0002256603370000111
Rn(b, (M), M) calculated based on the formula:
Figure BDA0002256603370000112
wherein T is channel coherence time, tau is the length of pilot frequency sequence, alpha is distortion coefficient, alpha is determined based on ADC quantization bit number corresponding to M, pdAverage transmission power, p, for each terminal currently served by the base stationtFor the transmission power of each pilot symbol, betanIs a large scale fading coefficient, betaiA large-scale fading coefficient for an ith terminal serving the base station, Δ being determined according to the following formula:
Figure BDA0002256603370000113
S407、
Figure BDA0002256603370000114
if yes, go to S408; if not, turning to S409;
S408、
Figure BDA0002256603370000115
S409、M＝M+1。
and S404 is turned.
S410, outputting
Figure BDA0002256603370000116
The corresponding antenna number and ADC quantization bit number are respectively the target antenna number and target ADC quantization bit number.
And S411, controlling the communication of the base station based on the target antenna number and the target ADC quantization bit number.
After determining the target number of antennas and the target number of ADC quantization bits, the base station communicates with the served terminals based on the target number of antennas and the target number of ADC quantization bits corresponding to the target number of antennas
According to the communication control method provided by the embodiment of the invention, the number of quantization bits of an analog-digital converter (ADC) corresponding to the number of antennas to be selected and the total spectrum efficiency are calculated, the number of the antennas to be selected is less than or equal to the maximum number of antennas, and the maximum number of antennas is determined based on the preset lowest ADC quantization bit number and the preset maximum system total power consumption; selecting the antenna number with the maximum total spectrum efficiency from the antenna numbers to be selected as a target antenna number based on the total spectrum efficiency corresponding to the antenna numbers to be selected; the communication of the base station is controlled based on the target antenna number and the target ADC quantization bit number corresponding to the target antenna number, and in some implementation processes, the total spectral efficiency of the system can be ensured, so that the condition that the ADC precision is reduced and the spectral efficiency of the system is low is avoided.
Example three:
in an embodiment of the present invention, a communication control apparatus is provided on the basis of the first and second embodiments, and as shown in fig. 5, the communication control apparatus includes: a calculating module 501, configured to calculate a quantization bit number and a total spectral efficiency of an analog-to-digital converter ADC corresponding to the number of antennas to be selected, where the number of antennas to be selected is smaller than a maximum number of antennas, and the maximum number of antennas is determined based on a preset minimum ADC quantization bit number and a preset maximum system total power consumption; a determining module 502, configured to determine a target number of antennas from the number of antennas to be selected based on a total spectrum efficiency corresponding to the number of antennas to be selected; and a control module 503, configured to control communication of the base station based on the target number of antennas and the target number of ADC quantization bits corresponding to the target number of antennas.
It should be understood that an ADC is a device for converting a continuous analog signal into a discontinuous digital signal, and in general, the output of the ADC is binary with a certain correspondence to the input of the ADC, and a certain error is introduced in the conversion process from a continuous variable to a discontinuous variable, so that a certain quantization noise is generated.
In the embodiment of the invention, the number of the antennas to be selected is less than or equal to the maximum number M of the antennasmax. The calculating module 501 is further configured to determine the maximum number of antennas based on a preset minimum number of ADC quantization bits and a preset maximum total power consumption of the system. And for the preset minimum ADC quantization bit number, the number can be flexibly set according to actual requirements. In order to reduce the total power consumption of the system, the preset lowest ADC quantization bit number may be set to be smaller, for example, the preset lowest ADC quantization bit number may be set to be the lowest quantization bit number supported by the ADC, or the preset lowest ADC quantization bit number may be set to be 1. Alternatively, to meet the accuracy of the ADC, the preset lowest ADC quantization bit number may be set a little higher. For the preset maximum system total power consumption, the method can be flexibly set according to actual needs. The equation relationship among the ADC quantization bit number b, the antenna number M, and the total power consumption P of the system is:
Figure BDA0002256603370000131
where η is the efficiency, p, of the power amplifier of the terminal serving the base stationiTransmission power, P, of the ith terminal serving the base station to the base stationSYNFor power consumption, P, generated by an oscillator of a base stationFIXFor a fixed power consumption, N is the number of terminals currently served by the base station, wherein the terminals served by the base station may be single antenna terminals, PUEThe power consumption resulting from operating the circuit elements connected to the antenna for each terminal currently served by the base station,
Figure BDA0002256603370000132
circuit element generation for base station operation connection of each antennaThe power consumption of (a) is reduced,
Figure BDA0002256603370000133
d is a fixed value which is more than or equal to 0 for the power consumption generated by each ADC,
Figure BDA0002256603370000134
is a fixed value more than or equal to 0, for example, the value range of D can be [10^ -8,10^ -7 ]]，
Figure BDA0002256603370000135
Can be in the range of [1,2 ]]And L is the calculation efficiency.
Based on the above formula, one can obtain:
Figure BDA0002256603370000136
it can be seen from the above formula that the larger the total power consumption P of the system, the smaller the quantization bit number b of the ADC, and the larger the number M of antennas. Therefore, the ADC quantization bit number b is equal to the preset lowest ADC quantization bit number bminThe system total power consumption P is the preset maximum system total power consumption gamma and is substituted into the formula, and the maximum antenna number M can be obtainedmaxWherein, the lowest ADC quantization bit number b is presetminPresetting maximum system total power consumption gamma and maximum antenna number MmaxThe relationship between them is as follows:
Figure BDA0002256603370000137
Figure BDA0002256603370000138
wherein the W function is the inverse of f (W), f (W) w.ewW is an arbitrary plural number, ewAs an exponential function, x is calculated according to the following formula:
Figure BDA0002256603370000141
that is, the relationship between the number of antennas M and the number of ADC quantization bits b is as follows:
Figure BDA0002256603370000142
when the ADC quantization bit number b (M) corresponding to the number M of antennas to be selected is calculated, M may be substituted into the above formula to calculate b (M).
When calculating the total spectrum efficiency corresponding to the number of antennas to be selected, the uplink spectrum efficiency of each terminal currently served by the base station may be determined based on the number of antennas to be selected and the quantization bit number corresponding to the number of antennas to be selected, and then the total spectrum efficiency is determined based on the uplink spectrum efficiency of each terminal.
In the embodiment of the present invention, the relationship between the number M of antennas and the uplink spectrum efficiency of the nth terminal currently served by the base station is as follows:
Figure BDA0002256603370000143
wherein the content of the first and second substances,
Figure BDA0002256603370000144
therefore, the approximation of the uplink spectral efficiency is:
Figure BDA0002256603370000151
wherein T is channel coherence time, tau is the length of pilot frequency sequence, alpha is distortion coefficient, alpha is determined based on ADC quantization bit number corresponding to M, pdAverage transmission power, p, for each terminal currently served by the base stationtFor the transmission power of each pilot symbol, betanIs a large scale fading coefficient, betaiThe large-scale fading coefficient, Δ, of the ith terminal serving the base stationThe following equation determines:
Figure BDA0002256603370000152
based on the formula, calculating the uplink spectrum efficiency R of the nth terminal corresponding to the number M of the antennas to be selectedn(m)。
The total spectral efficiency is the sum of the uplink spectral efficiencies of all terminals served by the base station, i.e.,
Figure BDA0002256603370000153
wherein R issumTo the overall spectral efficiency.
In this embodiment of the present invention, when the determining module 502 determines the target number of antennas, the number of antennas to be selected, of which the total spectrum efficiency is greater than the preset total spectrum efficiency threshold, may be selected from the number of antennas to be selected as the target number of antennas based on the total spectrum efficiency corresponding to the number of antennas to be selected. That is to say, in the embodiment of the present invention, a total spectrum efficiency threshold may be preset, and then, when the target number of antennas is selected, the number of antennas whose corresponding total spectrum efficiency is greater than the total spectrum efficiency threshold is selected from the number of antennas to be selected as the target number of antennas, so that the total spectrum efficiency of the system may be ensured. If there are at least two antennas to be selected, and the total spectral efficiencies corresponding to the antennas are all greater than the total spectral efficiency threshold, the number of antennas to be selected with the smallest (or largest) value can be selected as the target number of antennas. Or, assuming that there are at least two antennas to be selected, and the total spectral efficiencies corresponding to the antennas are both greater than the total spectral efficiency threshold, the number of antennas to be selected with the smallest (or the largest) ADC quantization bit number may be selected as the target number of antennas.
In this embodiment of the present invention, when the determining module 502 determines the target number of antennas, the number of antennas to be selected with the largest total spectrum efficiency may be selected from the number of antennas to be selected as the target number of antennas. For a specific process of selecting the antenna number with the maximum total spectrum efficiency as the target antenna number from the antenna numbers to be selected, reference may be made to embodiment one, and details are not described here.
After determining the target number of antennas, the communication control device controls communication of the base station based on the target number of antennas and the target number of ADC quantization bits corresponding to the target number of antennas.
In the embodiment of the present invention, the calculating module 501 may be implemented by a processor or other hardware module, the determining module 502 may be implemented by a processor or other hardware module, and the controlling module 503 may be implemented by a processor or other hardware module.
According to the communication control device provided by the embodiment of the invention, the number of quantization bits of an analog-digital converter (ADC) corresponding to the number of antennas to be selected and the total spectrum efficiency are calculated, the number of the antennas to be selected is less than or equal to the maximum number of antennas, and the maximum number of antennas is determined based on the preset lowest ADC quantization bit number and the preset maximum system total power consumption; determining the number of target antennas from the number of antennas to be selected based on the total spectrum efficiency corresponding to the number of antennas to be selected; the communication of the base station is controlled based on the target antenna number and the target ADC quantization bit number corresponding to the target antenna number, and in some implementation processes, the total spectral efficiency of the system can be ensured, so that the condition that the ADC precision is reduced and the spectral efficiency of the system is low is avoided.
Example four:
an embodiment of the present invention further provides a base station, please refer to fig. 6, including: a processor 601, a memory 602, and a communication bus 603; the communication bus 603 is used for realizing connection communication between the processor 601 and the memory 602; the processor 601 is configured to execute one or more computer programs stored in the memory 602 to implement at least one step of the communication control method according to the first embodiment and the second embodiment.
Embodiments of the present invention also provide a storage medium including volatile or nonvolatile, removable or non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, computer program modules or other data. Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact disk Read-Only Memory), Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.
The storage medium stores one or more computer programs that are executable by one or more processors to implement at least one step of the communication control method as described in embodiment one or embodiment two.
According to the base station and the storage medium provided by the embodiment of the invention, the number of the ADC quantization bits and the total spectrum efficiency of the analog-digital converter corresponding to the number of the antennas to be selected are calculated, the number of the antennas to be selected is less than or equal to the maximum number of the antennas, and the maximum number of the antennas is determined based on the preset lowest ADC quantization bits and the preset maximum system total power consumption; determining the number of target antennas from the number of antennas to be selected based on the total spectrum efficiency corresponding to the number of antennas to be selected; the communication of the base station is controlled based on the target antenna number and the target ADC quantization bit number corresponding to the target antenna number, and in some implementation processes, the total spectral efficiency of the system can be ensured, so that the condition that the ADC precision is reduced and the spectral efficiency of the system is low is avoided.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in computer program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

1. A communication control method, comprising:
calculating the ADC quantization bit number and the total spectrum efficiency of an analog-digital converter corresponding to the number of antennas to be selected, wherein the number of antennas to be selected is less than or equal to the maximum number of antennas, and the maximum number of antennas is determined based on the preset lowest ADC quantization bit number and the preset maximum system total power consumption;
determining a target antenna number from each antenna number to be selected based on the total spectrum efficiency corresponding to the antenna number to be selected;
and controlling the communication of the base station based on the target antenna number and the target ADC quantization bit number corresponding to the target antenna number.
2. The communication control method according to claim 1, wherein before calculating the number of ADC quantization bits and the total spectral efficiency corresponding to the number of antennas to be selected, the method further comprises:
determining the maximum antenna number based on a preset minimum ADC quantization bit number and preset maximum system total power consumption, wherein the preset minimum ADC quantization bit number is 1.
3. The communication control method according to claim 1, wherein the calculating the number of ADC quantization bits corresponding to the number of antennas to be selected comprises:
calculating the ADC quantization bit number corresponding to the number of the antennas to be selected according to the following relational expression of the number of the antennas and the ADC quantization bit number:
Figure FDA0002256603360000011
wherein b is the number of bits quantized by the ADC, W is the inverse function of f (W), L is the calculation efficiency, D is a constant greater than or equal to 0,
Figure FDA0002256603360000013
is a constant greater than or equal to 0, N is the number of terminals currently served by the base station, M is the number of antennas, and x is calculated according to the following formula:
Figure FDA0002256603360000012
wherein γ is the preset maximum total system power consumption, η is the efficiency of a power amplifier of a terminal served by the base station, piTransmission power, P, of the ith terminal serving said base station to said base stationSYNPower consumption, P, generated for the oscillator of the base stationFIXFor a fixed power consumption, PUEThe power consumption resulting from operating the circuit elements connected to the antenna for each terminal currently served by said base station,
Figure FDA0002256603360000021
power consumption resulting from operating circuit elements connected to each antenna for the base station;
f (w) is as follows:
f(w)＝w·ew
wherein w is a plurality of ewIs an exponential function.
4. The communication control method of claim 1, wherein calculating the total spectral efficiency for the number of antennas to be selected comprises:
determining the uplink spectrum efficiency of each terminal currently served by the base station based on the number of the antennas to be selected and the quantization bit number corresponding to the number of the antennas to be selected;
and determining the total spectrum efficiency based on the uplink spectrum efficiency of each terminal.
5. The communication control method according to claim 4, wherein the determining the uplink spectrum efficiency of each terminal currently served by the base station based on the number of antennas to be selected comprises:
calculating the uplink spectrum efficiency of each terminal currently served by the base station based on the number of the antennas to be selected according to the following relational expression between the number of the antennas and the uplink spectrum efficiency
Figure FDA0002256603360000022
Wherein R isnThe uplink spectrum efficiency of the nth terminal currently serving the base station, T is the channel coherence time, tau is the length of the pilot sequence, pdFor the average transmission power of each terminal, M is the number of antennas, alpha is a distortion coefficient, the alpha is determined based on the ADC quantization bit number corresponding to the M, and ptFor the transmission power of each pilot symbol, betanIs a large scale fading coefficient, betaiA large-scale fading coefficient of an ith terminal serving the base station, N being the number of terminals currently served by the base station, Δ being determined according to the following formula:
Figure FDA0002256603360000023
6. the communication control method according to any one of claims 1 to 5, wherein the determining a target number of antennas from among the number of antennas to be selected based on the total spectral efficiency corresponding to the number of antennas to be selected includes:
and selecting the number of the antennas to be selected with the total spectrum efficiency larger than the total spectrum efficiency threshold value from the number of the antennas to be selected as a target number of the antennas based on a preset total spectrum efficiency threshold value.
7. The communication control method according to any one of claims 1 to 5, wherein the determining a target number of antennas from among the number of antennas to be selected based on the total spectral efficiency corresponding to the number of antennas to be selected includes:
and selecting the number of the antennas to be selected with the maximum total spectrum efficiency from the number of the antennas to be selected as the target number of the antennas.
8. A communication control apparatus comprising:
the device comprises a calculation module, a selection module and a selection module, wherein the calculation module is used for calculating the ADC quantization bit number and the total spectrum efficiency of an analog-digital converter corresponding to the number of antennas to be selected, the number of the antennas to be selected is smaller than the maximum number of the antennas, and the maximum number of the antennas is determined based on the preset lowest ADC quantization bit number and the preset maximum system total power consumption;
a determining module, configured to determine a target antenna number from each of the antennas to be selected based on a total spectrum efficiency corresponding to the number of antennas to be selected
And the control module is used for controlling the communication of the base station based on the target antenna number and the target ADC quantization bit number corresponding to the target antenna number.
9. A base station, comprising: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute one or more computer programs stored in the memory to implement the steps of the communication control method according to any one of claims 1 to 7.
10. A storage medium, characterized in that the storage medium stores one or more computer programs executable by one or more processors to implement the steps of the communication control method according to any one of claims 1 to 7.
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