CN117278089B - Method for adaptively adjusting gain and repeater system - Google Patents
Method for adaptively adjusting gain and repeater system Download PDFInfo
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- CN117278089B CN117278089B CN202311555769.5A CN202311555769A CN117278089B CN 117278089 B CN117278089 B CN 117278089B CN 202311555769 A CN202311555769 A CN 202311555769A CN 117278089 B CN117278089 B CN 117278089B
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- 238000012544 monitoring process Methods 0.000 claims description 17
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
- H04B7/15535—Control of relay amplifier gain
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15564—Relay station antennae loop interference reduction
- H04B7/15578—Relay station antennae loop interference reduction by gain adjustment
Abstract
The invention relates to a method for adaptively adjusting gain and a repeater system, which calculate reasonable gain which the output signal of the repeater should have according to the current downlink received signal strength and rated output power of the repeater in real time, and adjust the current actual gain if the difference between the current actual gain and the reasonable gain exceeds a preset threshold value, thereby enabling the repeater to adaptively adjust the output signal gain in time so as to avoid signal interference and reduce coverage capacity.
Description
Technical Field
The present invention relates to the field of wireless coverage of mobile communication base stations, and in particular, to a method for adaptively adjusting gain and a repeater system.
Background
The repeater network system can couple (in a wired or wireless mode) wireless communication network signals, so that the problem of the existence of moving signals in a target area is solved rapidly, the construction cost is low, and the engineering implementation is simple and rapid.
However, in the current network engineering construction, the total output power of the base station changes according to the load of the traffic. When a wireless repeater is used, the space loss from a base station to a repeater donor antenna can change along with climate conditions, tree seasons and other environments. Conventional setting of fixed uplink and downlink amplification gains based on repeater input power and output power has many limitations. When the gain setting is too high and the service load of the base station is increased, the power of the input repeater is increased to saturate the output power, thereby influencing the signal quality and influencing the user perception of the coverage area of the repeater. Meanwhile, the working energy efficiency ratio of the repeater equipment is also deteriorated, and invalid energy waste is increased. The gain setting of the repeater is too small, and the repeater cannot reach the designed output power when the information source base station is in high load or full load, so that the coverage capacity of the repeater is affected.
Therefore, it is needed to provide a method and a system for adaptively adjusting the gain of an output signal in time according to the real-time power strength of a repeater signal, so as to avoid signal interference and reduce coverage capability.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for adaptively adjusting gain and a repeater system, which can adjust the gain of an output signal in time, avoid signal interference and reduce coverage capacity.
In order to solve the technical problems, the present invention provides a method for adaptively adjusting gain, comprising the following steps:
s1, acquiring an RSRP level value, a subcarrier bandwidth and a carrier bandwidth of a downlink amplified signal of a signal receiving port of a wireless modem unit, and calculating the full-load total power P from an information source base station to a downlink input port of a repeater according to the difference between the signal intensity of the downlink signal input port of the repeater and the signal intensity received by the wireless modem unit Go into the aggregate ；
S2, calculating preset rated output power P of the repeater Out of And the full-load total power P from the information source base station to the downlink input port of the repeater Go into the aggregate The difference between them to obtain reasonable gain G Closing device ；
S3, judging the reasonable gain G Closing device Subtraction of the downstream gain G Original source If the first difference value is larger than or equal to a preset threshold value, correspondingly increasing the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the first difference value; otherwise, judging the original downlink gain G Original source Subtracting the reasonable gain G Closing device If the second difference value is larger than or equal to the preset threshold value, the amplification gain of the downlink signal and the amplification gain of the uplink signal are correspondingly regulated down according to the second difference value.
Further, in the step S1, the total power P of the full load from the source base station to the downlink port of the repeater Go into the aggregate =p0+m+10×log (B/B0); wherein, P0 is the RSRP level value of the downlink amplified signal of the signal receiving port of the wireless modem unit, M is the difference between the signal intensity of the downlink input port of the repeater and the signal intensity received by the wireless modem unit, B is the carrier bandwidth, and B0 is the subcarrier bandwidth.
Further, the step S1 further includes:
obtaining a transmission bandwidth configuration N through 3GPP TS 38.104 protocol according to the subcarrier bandwidth and the carrier bandwidth RB Multiplying the value by 12 to obtain the number of subcarriers;
according to formula P Go into the aggregate =p0+m+10×log n, and calculating to obtain the full load total power P from the source base station to the downlink input port of the repeater Go into the aggregate The method comprises the steps of carrying out a first treatment on the surface of the Wherein P0 is the RSRP level value of the downlink amplified signal of the signal receiving port of the wireless modem unit, M is the difference between the signal intensity of the downlink signal input port of the repeater and the signal intensity received by the wireless modem unit, and N is the number of subcarriers.
Further, the M is a coupling degree of the coupler of the repeater.
Further, the step S3 further includes:
s4, judging whether a preset time interval is reached, if so, judging the G Closing device Replacing said G Original source And returns to step S1.
Further, in the step S3, the adjusting the amplification gain of the downstream signal and the amplification gain of the upstream signal according to the first difference correspondingly includes: increasing the amplification gain of the downlink signal and the amplification gain of the uplink signal by an amplitude equal to the first difference value;
the step of correspondingly reducing the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the second difference value comprises the following steps: and reducing the amplification gain of the downlink signal and the amplification gain of the uplink signal by an amplitude equal to the second difference value.
In order to solve the technical problem, the invention also provides a repeater system capable of adaptively adjusting gain, which comprises a first antenna, a coupler connected with the first antenna, a wireless modem unit connected with the coupler, a monitoring unit connected with the wireless modem unit, a signal processing module connected with the monitoring unit and the coupler, and a second antenna connected with the signal processing module;
the wireless modem unit is communicated with the information source base station to obtain an RSRP level value, a subcarrier bandwidth and a carrier bandwidth of a downlink amplified signal of a signal receiving port of the wireless modem unit;
the monitoring unit calculates the full-load total power P from the source base station to the downlink input port of the repeater according to the RSRP level value, the subcarrier bandwidth, the carrier bandwidth and the difference between the signal intensity of the downlink signal input port of the repeater and the signal intensity received by the wireless modem unit of the downlink amplified signal received by the signal receiving port of the wireless modem unit Go into the aggregate The method comprises the steps of carrying out a first treatment on the surface of the Calculating preset rated output power P of repeater Out of And the full-load total power P from the information source base station to the downlink input port of the repeater Go into the aggregate The difference between them to obtain reasonable gain G Closing device The method comprises the steps of carrying out a first treatment on the surface of the And judging the reasonable gain G Closing device Subtraction of the downstream gain G Original source If the first difference value of the first gain is larger than or equal to a preset threshold value, sending an instruction for adjusting the downlink gain and the uplink gain to the signal processing module; otherwise, judging the original downlink gain G Original source Subtracting the reasonable gain G Closing device If the second difference value of the first and second gains is larger than or equal to the preset threshold value, sending an instruction for regulating the downlink gain and the uplink gain to the signal processing module;
the signal processing module correspondingly increases the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the first difference value and correspondingly decreases the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the second difference value according to the instruction for decreasing the downlink gain and the uplink gain.
Further, what is needed isFull-load total power P from source base station to downlink input port of repeater Go into the aggregate =p0+m+10×log (B/B0); wherein, P0 is the RSRP level value of the downlink amplified signal of the signal receiving port of the wireless modem unit, M is the difference between the signal intensity of the downlink input port of the repeater and the signal intensity received by the wireless modem unit, B is the carrier bandwidth, and B0 is the subcarrier bandwidth.
Still further, the monitoring unit further includes: obtaining a transmission bandwidth configuration N through 3GPP TS 38.104 protocol according to the subcarrier bandwidth and the carrier bandwidth RB Multiplying the value by 12 to obtain the number of subcarriers; according to formula P Go into the aggregate =p0+m+10×log n, and calculating to obtain the full load total power P from the source base station to the downlink input port of the repeater Go into the aggregate The method comprises the steps of carrying out a first treatment on the surface of the Wherein P0 is the RSRP level value of the downlink amplified signal of the signal receiving port of the wireless modem unit, M is the difference between the signal intensity of the downlink input port of the repeater and the signal intensity received by the wireless modem unit, and N is the number of subcarriers.
Further, the M is the coupling degree of the coupler.
Compared with the prior art, the invention has the following beneficial effects: according to the real-time current downlink received signal strength and rated output power of the repeater, the reasonable gain which the current repeater output signal should have is calculated, and if the difference between the current actual gain and the reasonable gain exceeds a preset threshold value, the current actual gain is adjusted, so that the repeater can adjust the output signal gain in a timely and self-adaptive manner, signal interference is avoided, and coverage capacity is reduced.
Drawings
FIG. 1 is a diagram of method steps for adaptively adjusting gain according to an embodiment of the present invention;
fig. 2 is a block diagram of a repeater system for adaptively adjusting gain in accordance with an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
As shown in fig. 1, the method for adaptively adjusting gain according to the embodiment of the invention includes the following steps:
s1, acquiring an RSRP (Reference Signal Receiving Power, reference signal received power) level value, a subcarrier bandwidth and a carrier bandwidth of a downlink amplified signal of a signal receiving port of a wireless modem unit, and calculating the full-load total power P from an information source base station to a downlink input port of the repeater according to the difference between the signal intensity of a downlink signal input port of the repeater and the signal intensity received by the wireless modem unit Go into the aggregate 。
Specifically, in one embodiment, the method is according to formula P Go into the aggregate =p0+m+10×log (B/B0) calculating the total loading power of the source base station to the downstream input port of the repeater; wherein, P0 is the RSRP level value of the downlink amplified signal of the signal receiving port of the wireless modem unit, M is the difference between the signal intensity of the downlink input port of the repeater and the signal intensity received by the wireless modem unit, B is the carrier bandwidth, and B0 is the subcarrier bandwidth.
In this embodiment, M is the coupling degree of the coupler of the repeater system, and the coupling degree of the coupler is preset in the system hardware parameters. In addition, M may be other preset values, for example, a conventional line loss (typically ranging from 0.1 dB to 1.5 dB) may be added to the coupling degree of the coupler, or a sum of the signal attenuation of the downstream output port of the coupler and the coupling degree of the coupler according to a preset measurement.
In this embodiment, the RSRP level value P0 of the downstream amplified signal of the signal receiving port of the wireless modem unit refers to the signal power of the downstream signal input port of the signal processing module of the repeater. The wireless modem unit of the repeater can directly communicate with the source base station to obtain P0, B0 and B.
When the base station is fully loaded, the total power is B/B0 of subcarrier power RSRPThe difference is 10log (B/B0) when converted into dB units, so that the total power P from the source base station to the repeater is under full load Go into the aggregate =p0+m+10×log (B/B0). Wherein B/B0 also corresponds to the number of subcarriers.
In another embodiment, to obtain a more accurate number of subcarriers to more accurately calculate the full power of the downlink input port of the source base station to the repeater, after obtaining the subcarrier bandwidth and the carrier bandwidth, the transmission bandwidth configuration N is obtained by searching the table 5.3.2-1 or the table 5.3.2-2 of the 3gpp TS 38.104 protocol RB The value is multiplied by 12 to obtain the number of subcarriers.
And then according to formula P Go into the aggregate The total full load power P from the source base station to the downlink input port of the repeater is calculated by the method of (P0 + M +10 x log N) Go into the aggregate . N is the number of subcarriers.
S2, calculating preset rated output power P of the repeater Out of And the full-load total power P from the source base station to the downlink input port of the repeater Go into the aggregate The difference between them to obtain reasonable gain G Closing device 。
Specifically, preset rated downlink output power P of repeater Out of The hardware parameters are preset in the system and can be directly read. In this embodiment, reasonable gain G He = P Out of -P Enter the total.
S3, judging reasonable gain G Closing device Subtraction of the downstream gain G Original source If the first difference value is larger than or equal to a preset threshold value, correspondingly increasing the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the first difference value; otherwise, judging the original downlink gain G Original source Subtracting reasonable gain G Closing device If the second difference value is larger than or equal to the preset threshold value, the down signal is correspondingly regulated down according to the second difference valueLarge gain and amplification gain of the upstream signal.
Reasonable gain G Closing device Is larger than the original downlink gain G Original source When the current downlink gain is lower, the downlink gain should be increased. Combining gain G Closing device Is smaller than the original downlink gain G Original source When the current downlink gain is higher, the downlink gain should be reduced. When the downlink gain is adjusted, the uplink gain is also required to be adjusted synchronously and in the same direction.
In this embodiment, the adjusting the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the first difference value includes: the amplification gain of the downstream signal and the amplification gain of the upstream signal are increased by an amplitude equal to the first difference.
Correspondingly reducing the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the second difference value, comprising: the amplification gain of the downstream signal and the amplification gain of the upstream signal are reduced by an amplitude equal to the second difference.
In this embodiment, the preset threshold may be a positive number such as 2db,3db, etc., and those skilled in the art may set the threshold according to the actual situation.
In another embodiment, step S3 is followed by the further step of:
s4, judging whether a preset time interval is reached, if so, G Closing device Substitution G Original source And will return to executing step S1.
Specifically, it can be set to re-calculate and judge once every 5 minutes or other time intervals, and G obtained by the last calculation Closing device G as the current calculation Original source Thus obtaining real-time accurate judgment.
As shown in fig. 2, the repeater system for adaptively adjusting gain according to the embodiment of the present invention includes a first antenna, a coupler connected to the first antenna, a wireless modem connected to the coupler, a monitoring unit connected to the wireless modem, a signal processing module connected to the monitoring unit and the coupler, and a second antenna connected to the signal processing module.
The wireless modulation and demodulation unit is communicated with the information source base station to obtain the RSRP level value, the subcarrier bandwidth and the carrier bandwidth of the downlink amplified signal of the signal receiving port of the wireless modulation and demodulation unit.
The monitoring unit calculates the full-load total power P from the source base station to the downlink input port of the repeater according to the RSRP level value, the subcarrier bandwidth, the carrier bandwidth of the downlink amplified signal received by the signal receiving port of the wireless modem unit and the difference between the signal intensity of the downlink signal input port of the repeater and the signal intensity received by the wireless modem unit Go into the aggregate The method comprises the steps of carrying out a first treatment on the surface of the Calculating preset rated output power P of repeater Out of And the full-load total power P from the source base station to the downlink input port of the repeater Go into the aggregate The difference between them to obtain reasonable gain G Closing device The method comprises the steps of carrying out a first treatment on the surface of the Judging reasonable gain G Closing device Subtraction of the downstream gain G Original source If the first difference value is larger than or equal to a preset threshold value, an instruction for adjusting the downlink gain and the uplink gain is sent to the signal processing module; otherwise, judging the original downlink gain G Original source Subtracting reasonable gain G Closing device If the second difference value is larger than or equal to the preset threshold value, an instruction for regulating the downlink gain and the uplink gain is sent to the signal processing module.
Specifically, according to formula P Go into the aggregate =p0+m+10×log (B/B0) calculating the total loading power of the source base station to the downstream input port of the repeater; wherein, P0 is the RSRP level value of the downlink amplified signal of the signal receiving port of the wireless modem unit, M is the difference between the signal intensity of the downlink input port of the repeater and the signal intensity received by the wireless modem unit, B is the carrier bandwidth, and B0 is the subcarrier bandwidth.
In this embodiment, M is the coupling degree of the coupler of the repeater system, and the coupling degree of the coupler is preset in the system hardware parameters. In addition, M may be other preset values, for example, a conventional line loss (typically ranging from 0.1 dB to 1.5 dB) may be added to the coupling degree of the coupler, or a sum of the signal attenuation of the downstream output port of the coupler and the coupling degree of the coupler according to a preset measurement.
In this embodiment, the RSRP level value P0 of the downstream amplified signal of the signal receiving port of the wireless modem unit refers to the signal power of the downstream signal input port of the signal processing module of the repeater. The wireless modem unit of the repeater can directly communicate with the source base station to obtain P0, B0 and B.
When the base station is fully loaded, the total power is B/B0 times of the subcarrier power RSRP, converted into dB units, the difference is 10log (B/B0), so that the total power P under the condition that the downlink input from the source base station to the repeater is fully loaded Go into the aggregate =p0+m+10×log (B/B0). Wherein B/B0 also corresponds to the number of subcarriers.
In another embodiment, to obtain a more accurate number of subcarriers to more accurately calculate the full power of the downlink input port of the source base station to the repeater, after obtaining the subcarrier bandwidth and the carrier bandwidth, the transmission bandwidth configuration N is obtained by searching the table 5.3.2-1 or the table 5.3.2-2 of the 3gpp TS 38.104 protocol RB The value is multiplied by 12 to obtain the number of subcarriers.
And then according to formula P Go into the aggregate The total full load power P from the source base station to the downlink input port of the repeater is calculated by the method of (P0 + M +10 x log N) Go into the aggregate . N is the number of subcarriers.
In addition, the preset rated downlink output power P of the repeater Out of The hardware parameters are preset in the system and can be directly read. In this embodiment, reasonable gain G He = P Out of -P Enter the total.
Reasonable gain G Closing device Is larger than the original downlink gain G Original source When the current downlink gain is lower, the downlink gain should be increased. Combining gain G Closing device Is smaller than the original downlink gain G Original source When the current downlink gain is higher, the downlink gain should be reduced. When the downlink gain is adjusted, the uplink gain is also required to be adjusted synchronously and in the same direction.
In this embodiment, the preset threshold may be a positive number such as 2db,3db, etc., and those skilled in the art may set the threshold according to the actual situation.
The signal processing module correspondingly increases the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the first difference value and correspondingly decreases the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the second difference value according to the instruction for reducing the downlink gain and the uplink gain.
Specifically, in this embodiment, the signal processing module includes a first duplexer, a second duplexer, and an uplink signal processing unit and a downlink signal processing unit that connect the first duplexer and the second duplexer.
In this embodiment, the amplification gain of the downstream signal and the amplification gain of the upstream signal are correspondingly increased according to the first difference, which includes increasing the amplification gain of the downstream signal and the amplification gain of the upstream signal by an amplitude equal to the first difference.
Specifically, the downlink signal processing unit correspondingly increases the amplification gain with the amplitude equal to the first difference value according to the control instruction for increasing the amplification gain of the downlink signal sent by the monitoring unit.
The uplink signal processing unit correspondingly increases the amplification gain with the amplitude equal to the first difference value according to the control instruction for adjusting the amplification gain of the uplink signal sent by the monitoring unit.
And correspondingly reducing the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the second difference value, wherein the step of reducing the amplification gain of the downlink signal and the amplification gain of the uplink signal by the amplitude equal to the second difference value.
Specifically, the downlink signal processing unit correspondingly reduces the amplification gain with the amplitude equal to the first difference value according to the control instruction for reducing the amplification gain of the downlink signal sent by the monitoring unit.
The uplink signal processing unit correspondingly reduces the amplification gain with the amplitude equal to the first difference value according to the control instruction for reducing the amplification gain of the uplink signal sent by the monitoring unit.
In another embodiment, the monitoring unit further comprises: judging whether a preset time interval is reached, if so, G Closing device Substitution G Original source And controlling the wireless modem unit to acquire the RSRP level value, the subcarrier bandwidth and the carrier bandwidth of the downlink amplified signal again.
Specifically, every 5 minutes or other time may be providedThe time interval is calculated and judged once again, and G obtained by the last calculation is calculated Closing device G as the current calculation Original source Thus obtaining real-time accurate judgment.
In summary, the present invention calculates the reasonable gain that the output signal of the repeater should have according to the current downlink received signal strength and the rated output power of the repeater in real time, and if the difference between the current actual gain and the reasonable gain exceeds the preset threshold, the current actual gain is adjusted, so that the repeater can adjust the output signal gain in a timely and self-adaptive manner, to avoid signal interference and reduce coverage capability.
The foregoing examples only illustrate preferred embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that modifications and improvements can be made without departing from the spirit of the invention, such as combining different features of the various embodiments, which are all within the scope of the invention.
Claims (8)
1. A method of adaptively adjusting gain, comprising the steps of:
s1, acquiring an RSRP level value, a subcarrier bandwidth and a carrier bandwidth of a downlink amplified signal of a signal receiving port of a wireless modem unit, and calculating the full-load total power P from an information source base station to a downlink input port of a repeater according to the difference value between the signal intensity of the downlink signal input port of the repeater and the signal intensity received by the wireless modem unit Go into the aggregate ；
S2, calculating preset rated output power P of the downlink of the repeater Out of And the full-load total power P from the information source base station to the downlink input port of the repeater Go into the aggregate The difference between them to obtain reasonable gain G Closing device ；
S3, judging the reasonable gain G Closing device Subtraction of the downstream gain G Original source If the first difference value of the (b) is larger than or equal to a preset threshold value, correspondingly increasing the amplification gain and the uplink of the downlink signal according to the first difference valueAmplification gain of the signal; otherwise, judging the original downlink gain G Original source Subtracting the reasonable gain G Closing device If the second difference value is larger than or equal to the preset threshold value, correspondingly reducing the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the second difference value;
in the step S1, the total power P of the signal source base station to the downlink port of the repeater Go into the aggregate =p0+m+10×log (B/B0); wherein, P0 is the RSRP level value of the downlink amplified signal of the signal receiving port of the wireless modem unit, M is the difference between the signal intensity of the downlink input port of the repeater and the signal intensity received by the wireless modem unit, B is the carrier bandwidth, and B0 is the subcarrier bandwidth.
2. The method for adaptively adjusting gain according to claim 1, wherein said step S1 further comprises:
obtaining a transmission bandwidth configuration N through 3GPP TS 38.104 protocol according to the subcarrier bandwidth and the carrier bandwidth RB Multiplying the value by 12 to obtain the number of subcarriers;
according to formula P Go into the aggregate =p0+m+10×log n, and calculating to obtain the full load total power P from the source base station to the downlink input port of the repeater Go into the aggregate The method comprises the steps of carrying out a first treatment on the surface of the Wherein P0 is the RSRP level value of the downlink amplified signal of the signal receiving port of the wireless modem unit, M is the difference between the signal intensity of the downlink signal input port of the repeater and the signal intensity received by the wireless modem unit, and N is the number of subcarriers.
3. The method for adaptively adjusting gain as set forth in claim 1, wherein in said step S2, a preset rated downlink output power P of the repeater is set Out of The hardware parameters are preset in the system and can be directly read.
4. The method for adaptively adjusting gain according to claim 1, wherein said step S3 further comprises, after:
s4, judging whether the preset time is reachedInterval, if so, G Closing device Replacing said G Original source And returns to step S1.
5. The method of adaptively adjusting gain according to claim 1, wherein in said step S3, said adjusting up the amplification gain of the downstream signal and the amplification gain of the upstream signal according to said first difference value comprises: increasing the amplification gain of the downlink signal and the amplification gain of the uplink signal by an amplitude equal to the first difference value;
the step of correspondingly reducing the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the second difference value comprises the following steps: and reducing the amplification gain of the downlink signal and the amplification gain of the uplink signal by an amplitude equal to the second difference value.
6. The repeater system is characterized by comprising a first antenna, a coupler connected with the first antenna, a wireless modem unit connected with the coupler, a monitoring unit connected with the wireless modem unit, a signal processing module connected with the monitoring unit and the coupler, and a second antenna connected with the signal processing module;
the wireless modem unit is communicated with the information source base station to obtain an RSRP level value, a subcarrier bandwidth and a carrier bandwidth of a downlink amplified signal of a signal receiving port of the wireless modem unit;
the monitoring unit calculates the full-load total power P from the source base station to the downlink input port of the repeater according to the RSRP level value, the subcarrier bandwidth, the carrier bandwidth and the difference between the signal intensity of the downlink signal input port of the repeater and the signal intensity received by the wireless modem unit of the downlink amplified signal received by the signal receiving port of the wireless modem unit Go into the aggregate The method comprises the steps of carrying out a first treatment on the surface of the Calculating preset rated output power P of repeater Out of And the full-load total power P from the information source base station to the downlink input port of the repeater Go into the aggregate The difference between them to obtain reasonable gain G Closing device The method comprises the steps of carrying out a first treatment on the surface of the And judging the reasonable gain G Closing device The original reduction and the downlink increaseYi G Original source If the first difference value of the first gain is larger than or equal to a preset threshold value, sending an instruction for adjusting the downlink gain and the uplink gain to the signal processing module; otherwise, judging the original downlink gain G Original source Subtracting the reasonable gain G Closing device If the second difference value of the first and second gains is larger than or equal to the preset threshold value, sending an instruction for regulating the downlink gain and the uplink gain to the signal processing module;
the signal processing module correspondingly increases the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the first difference value and correspondingly decreases the amplification gain of the downlink signal and the amplification gain of the uplink signal according to the second difference value according to the instruction for decreasing the downlink gain and the uplink gain;
the full-load total power P from the source base station to the downlink input port of the repeater Go into the aggregate =p0+m+10×log (B/B0); wherein, P0 is the RSRP level value of the downlink amplified signal of the signal receiving port of the wireless modem unit, M is the difference between the signal intensity of the downlink input port of the repeater and the signal intensity received by the wireless modem unit, B is the carrier bandwidth, and B0 is the subcarrier bandwidth.
7. The adaptive gain-adjusted repeater system of claim 6, wherein the monitoring unit further comprises: obtaining a transmission bandwidth configuration N through 3GPP TS 38.104 protocol according to the subcarrier bandwidth and the carrier bandwidth RB Multiplying the value by 12 to obtain the number of subcarriers; according to formula P Go into the aggregate =p0+m+10×log n, and calculating to obtain the full load total power P from the source base station to the downlink input port of the repeater Go into the aggregate The method comprises the steps of carrying out a first treatment on the surface of the Wherein P0 is the RSRP level value of the downlink amplified signal of the signal receiving port of the wireless modem unit, M is the difference between the signal intensity of the downlink input port of the repeater and the signal intensity received by the wireless modem unit, and N is the number of subcarriers.
8. The adaptive gain-adjusted repeater system of claim 6,characterized in that the monitoring unit further comprises: judging whether a preset time interval is reached, if so, G Closing device Substitution G Original source And controlling the wireless modem unit to acquire the RSRP level value, the subcarrier bandwidth and the carrier bandwidth of the downlink amplified signal again.
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