CN107872866A - Uplink interference control method and system and the base station for controlling uplink interference - Google Patents
Uplink interference control method and system and the base station for controlling uplink interference Download PDFInfo
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- CN107872866A CN107872866A CN201610852166.5A CN201610852166A CN107872866A CN 107872866 A CN107872866 A CN 107872866A CN 201610852166 A CN201610852166 A CN 201610852166A CN 107872866 A CN107872866 A CN 107872866A
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- base station
- interference
- desired value
- attenuation
- link
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
Abstract
A kind of base station the invention discloses uplink interference control method and system and for controlling uplink interference, is related to communication technical field.Method of the present invention by first reducing uplink transmission power parameter, reducing uplink transmission power using hardware decay again, the species of uplink interference can be distinguished, and Home Network uplink interference can be reduced by the method for the uplink transmission power for reducing base station, him is reduced by way of attenuator is by Physical Attenuation and nets interference, so as on the premise of Consumer's Experience is ensured, be effectively reduced uplink interference.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of uplink interference control method and system and for controlling
The base station of uplink interference.
Background technology
As the growing development of wireless communication technology, mobile phone are inseparable with the production and living of people.Instant messaging,
The Mobile solutions such as news, Online Video widely use, and on the one hand enrich the life of people, on the other hand obvious to aggravate
Wireless network load.Femto cell is also limited from initial covering, and it is limited, interference-limited to be gradually transitions capacity.
The high traffic scene such as Stadium, the difficult point that must be solved when being telecom operators' optimization network.Due to this kind of
Region traffic is intensive, often causes the reverse capacity of base station very low because uplink interference is serious.
Mainly three interference, Home Network interference and equipment fault aspects are netted including him in the interference source of uplink interference.Existing skill
In art, in order to solve the problems, such as base station uplink interference, femto cell upstream attenuation is often automatically increased in high traffic, so as to drop
Low interference.However, this method, which can efficiently solve him, nets interference, but disturbed for Home Network, this method can cause user's hand
The signal quality of machine is deteriorated, and influences Consumer's Experience.
The content of the invention
A technical problem to be solved of the embodiment of the present invention is：How different uplink interference types is directed to, protected
Uplink interference is reduced on the premise of card user communication quality.
One side according to embodiments of the present invention, there is provided a kind of uplink interference control method, including：Base station monitors
Whether the interference desired value of base station is more than default high threshold；If the interference desired value of base station is more than default high threshold, base
Standing reduces the uplink transmission power of base station according to adjustment mould plate under parameter；Base station is by the interference desired value of reduction and default low threshold
It is compared；If the interference desired value of base station is more than default low threshold, base station carries out link attenuation by attenuator.
In one embodiment, base station by the interference desired value of reduction compared with default low threshold including：Base station
By the interference desired value of reduction compared with default high threshold and low threshold；If the interference desired value of base station is more than default
Low threshold, base station by attenuator carry out link attenuation include：If the interference desired value of base station is more than default high threshold,
Base station carries out link attenuation by attenuator；If the interference desired value of base station between default high threshold and low threshold,
Base station descends the uplink transmission power of adjustment mould plate reduction base station according to parameter again；Wherein, parameter is descended up in adjustment mould plate again
Transmission power parameter is less than the uplink transmission power parameter in adjustment mould plate under parameter.
In one embodiment, after descending the uplink transmission power that adjustment mould plate reduces base station again according to parameter in base station,
Also include：Compared with base station carries out the interference desired value of base station again with default low threshold；If the interference desired value of base station
More than default low threshold, base station carries out link attenuation by attenuator.
In one embodiment, base station carries out link attenuation by attenuator includes：Base station is carried out up by attenuator
The difference of link attenuation and downlink attenuation, the pad value of up-link decay and the pad value of downlink attenuation is default
In the range of.
In one embodiment, base station carries out up-link decay and downlink attenuation by attenuator includes：Base station
The upstream attenuation value of up-link is adjusted, the interference desired value of up-link is reached interference index reference value；Base station is according to upper
The pad value that row pad value and default domain of walker determine carries out downlink attenuation.
In one embodiment, after carrying out link attenuation by attenuator in base station, base station judges that the interference of base station refers to
Whether scale value is higher than default low threshold；If the interference desired value of base station is higher than default low threshold, judge that base station is faulty.
In one embodiment, the strength indicator value that desired value is reception signal is disturbed, and/or, uplink transmission power bag
The transmission power of base station when the transmission power of base station and/or terminal are surfed the Net when including terminal initial access.
Second aspect according to embodiments of the present invention, there is provided a kind of base station for being used to control uplink interference, including：Interference
Whether monitoring modular, the interference desired value for monitoring base station are more than default high threshold；First parameter adjustment module, for working as
When the interference desired value of base station is more than default high threshold, the uplink transmission power of base station is reduced according to adjustment mould plate under parameter；Control
Effect detection module processed, for by the interference desired value of reduction compared with default low threshold；Hardware attenuation module, is used for
When control effect detection module detects that the interference desired value of base station is more than default low threshold, line link is entered by attenuator
Decay.
In one embodiment, control effect detection module is further used for the interference desired value of reduction and default height
Thresholding and low threshold are compared；Base station also includes the second parameter adjustment module, for when the interference desired value of base station is positioned at pre-
If high threshold and low threshold between when, descended again according to parameter adjustment mould plate reduce base station uplink transmission power；Wherein, parameter
The uplink transmission power parameter in adjustment mould plate is descended to be less than the uplink transmission power parameter under parameter in adjustment mould plate again；Hardware is decayed
Module is further used for, when the interference desired value of base station is more than default high threshold, link attenuation being carried out by attenuator.
In one embodiment, in addition to control effect secondary detection module and hardware attenuation module；Control effect is secondary
Detection module is used for compared with the interference desired value of base station is carried out again with default low threshold；Hardware attenuation module is used for when control
When effect secondary detection module processed detects that the interference desired value of base station is more than default low threshold, line link is entered by attenuator
Decay.
In one embodiment, hardware attenuation module is further used for carrying out up-link decay and downlink attenuation,
The difference of the pad value of up-link decay and the pad value of downlink attenuation is within a preset range.
In one embodiment, hardware attenuation module includes：Up-link attenuation units, for adjusting up-link
Row pad value, the interference desired value of up-link is set to reach interference index reference value；Downlink attenuation unit, for according to
The pad value that row pad value and default domain of walker determine carries out downlink attenuation.
In one embodiment, in addition to：Hardware attenuating detection module, for judging using hardware attenuation module
After carrying out link attenuation, whether the interference desired value of base station is higher than default low threshold；Fault warning module, for working as base station
Interference desired value when being higher than default low threshold, judge that base station is faulty.
In one embodiment, the strength indicator value that desired value is reception signal is disturbed, and/or, uplink transmission power bag
The transmission power of base station when the transmission power of base station and/or terminal are surfed the Net when including terminal initial access.
In one embodiment, hardware attenuation module includes interference desired value acquisition module, D/A converter module, up declined
Subtract device and downstream amplifier；Disturb desired value acquisition module to be used for the interference desired value for measuring base station in real time, and be sent to and be located at
Inside of base station and/or the interference desired value monitoring module of outside, interference desired value monitoring module, which is used to compare, disturbs desired value to obtain
The interference desired value and interference index reference value that modulus block is sent, and D/A converter module controlled according to comparative result, up is declined
Subtract device and carry out upstream attenuation, control downstream amplifier carries out downstream attenuation.
3rd aspect according to embodiments of the present invention, there is provided a kind of uplink interference control system, including：It is foregoing any one
Kind base station, coupler and high power load.Coupler is connected with base station, and the degree of coupling of coupler between 7~30dB, bear by power
Load is connected with coupler.
The present invention is by first reducing uplink transmission power parameter, decayed using hardware reduces the side of uplink transmission power again
Method, the species of uplink interference can be distinguished, and can be reduced by the method for the uplink transmission power for reducing base station and originally surfed the net
Interference, him is reduced by way of attenuator is by Physical Attenuation and nets interference, so as on the premise of Consumer's Experience is ensured,
It is effectively reduced uplink interference.
By referring to the drawings to the present invention exemplary embodiment detailed description, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart of one embodiment of uplink interference control method of the present invention.
Fig. 2 is the flow chart of another embodiment of uplink interference control method of the present invention.
Fig. 3 is the flow chart of one embodiment of upstream and downstream balance attenuation method of the present invention.
Fig. 4 is the structure chart that the present invention is used to control one embodiment of the base station of uplink interference.
Fig. 5 is the structure chart that the present invention is used to control another embodiment of the base station of uplink interference.
Fig. 6 is the structure chart of RRU of the present invention one embodiment.
Fig. 7 is the structure chart of one embodiment of uplink interference control system of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any restrictions.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
The uplink interference control method of one embodiment of the invention is described below with reference to Fig. 1.
Fig. 1 is the flow chart of one embodiment of uplink interference control method of the present invention.As shown in figure 1, the embodiment
Method includes：
Whether step S102, the interference desired value of base station monitors base station are more than default high threshold.
Wherein, it for example can be that (Received Signal Strength Indication, connect RSSI to disturb desired value
The strength indicator value of the collection of letters number).RSSI continues too high, illustrates that the upward signal that receives is too strong, the interference between signal is too big, meeting
Influence signal demodulation.
Uplink transmission power can for example include base station when the transmission power of base station, terminal online during terminal initial access
Transmission power etc..
Step S104, if the interference desired value of base station is more than default high threshold, base station drops according to adjustment mould plate under parameter
The uplink transmission power of low base station.
If the interference desired value of base station is more than default high threshold, illustrates that current uplink interference is excessive, have impact on use
Family is used, it is therefore desirable to which base station side is adjusted, and makes the interference desired value of base station reduce.
Step S106, base station is by the interference desired value of reduction compared with default low threshold.
After adjustment uplink transmission power, it may not tell on immediately.Therefore, after step S104 is performed,
Preset time can be waited to perform step S106 again.Such as can wait 2~4 minutes, then by the interference desired value of reduction and in advance
If low threshold be compared.
Step S108, if the interference desired value of base station is more than default low threshold, line link is entered in base station by attenuator
Decay.
By using the method for above-described embodiment, the type of uplink interference can be identified.Disturb, can adopt for Home Network
It is adjusted with the method for reducing uplink transmission power, and is disturbed for outer net, transmitting work(of the attenuator to base station can be passed through
Rate is decayed.If after uplink transmission power parameter adjustment, the interference desired value of base station is still greater than default wealthy family
Limit, then the method for the transmission power parameter of terminal can not effectively reduce uplink interference in explanation reduction Home Network, produce the original of interference
Interference is netted because being likely to him.Therefore, it may be considered that the method to be decayed using hardware in step S108.
If the interference desired value of base station is less than default low threshold, illustrate that base station has now reached preferable shape
State, this adjustment processing can be terminated.
Method by first reducing uplink transmission power parameter, reducing uplink transmission power using hardware decay again, can be with
The species of uplink interference is distinguished, and Home Network uplink interference can be reduced by the method for the uplink transmission power for reducing base station, is led to
Overdamping device is reduced him by way of Physical Attenuation and nets interference, so as on the premise of Consumer's Experience is ensured, effectively
Reduce uplink interference.
The present invention can also refer to after the uplink transmission power of base station is reduced according to adjustment mould plate under parameter further according to interference
Scale value further reduces the uplink transmission power of base station again by the method for adjustment software parameter number.This hair is described below with reference to Fig. 2
The uplink interference control method of another bright embodiment.
Fig. 2 is the flow chart of another embodiment of uplink interference control method of the present invention.As shown in Fig. 2 the embodiment
Method include：
Whether step S202, the interference desired value of base station monitors base station are more than default high threshold.
Step S204, if the interference desired value of base station is more than default high threshold, base station drops according to adjustment mould plate under parameter
The uplink transmission power of low base station.
Step S202~S204 embodiment may be referred to step S102~S104.
The uplink transmission power that base station is reduced according to adjustment mould plate under parameter is a process soundd out.In step S204,
The uplink transmission power of base station is moderately turned down first, and then whether the reduction degree of detection interference desired value has reached default effect
Fruit.
Step S206, base station is by the interference desired value of reduction compared with default high threshold and low threshold.If base
The interference desired value stood is more than default high threshold, performs step S2122；If the interference desired value of base station is located at default height
Between thresholding and low threshold, step S208 is performed；If the interference desired value of base station is less than default low threshold, step is performed
S2124。
If after uplink transmission power adjusts, the interference desired value of base station directly have decreased to below low threshold,
Then explanation has currently reached perfect condition, can terminate this adjustment.
If after uplink transmission power adjusts, the interference desired value of base station is located at default high threshold and low threshold
Between, it can continue to be adjusted base station using the method for reducing uplink transmission power, that is, perform step S208.
Step S208, base station descend the uplink transmission power of adjustment mould plate reduction base station according to parameter again.
Wherein, parameter descends the uplink transmission power parameter in adjustment mould plate to be less than the up transmitting under parameter in adjustment mould plate again
Power parameter.
Step S210, compared with base station carries out the interference desired value of base station again with default low threshold.If base station
Interference desired value is more than default low threshold, performs step S2122；If the interference desired value of base station is less than default low door
Limit, perform step S2124.
If after again passing by uplink transmission power adjustment, the interference desired value of base station is still above default low door
Limit, i.e., perfect condition is still not up to, then can further be decayed using attenuator.
Step S2122, base station carry out link attenuation by attenuator.
After carrying out link attenuation by attenuator in base station, base station can also judge whether the interference desired value of base station is high
In default low threshold.If the interference desired value of base station is higher than default low threshold, judge that base station is faulty, it may be considered that
Base station is repaired and changed.
Step S2124, terminate this adjustment.
If the interference desired value of base station is less than default high threshold, illustrate that the uplink transmission power method for turning down base station can
Effectively to reduce the uplink interference of base station, i.e. interference of the uplink interference essentially from Home Network.Therefore, can continue using adjustment ginseng
Several methods reduces uplink interference.
If the interference desired value of base station is not only below default high threshold, also less than default low threshold, then illustrate base
Stand and now reached perfect condition, this adjustment processing can be terminated.
By using the above method, can heuristically reduce the uplink transmission power of base station first reduces Home Network transmitting work(
Rate, and judge according to the result after adjustment the type of uplink interference, when the reason for the uplink interference for Home Network interference when, further
Mitigate Home Network by the method for the uplink transmission power for reducing base station to disturb, so as to drop while ensure that user communication quality
Low uplink interference, improves Consumer's Experience.
In the above-described embodiments, when base station is the RRU3606 base stations of Huawei, adjustment mould plate and parameter are lowered again under parameter
Template is for example referred to shown in table 1.
Table 1
In table 1, OpenLoopAdjust refers to uplink transmission power during base station access by terminal, taking in parameterized template
Value may range from -105~-75, and the value descended again in adjustment mould plate of parameter is less than under parameter the value in adjustment mould plate；
PCTMax, PCTMin, PCTInit and PCTNoData are respectively maximum uplink transmission power during terminal online, in minimum
Uplink transmission power when row transmission power, initial uplink transmission power and no data, above-mentioned parameter taking in parameterized template
Value may range from -28672~-22016, and the value that parameter is descended in adjustment mould plate again is less than under parameter in adjustment mould plate
Value；1x data services switch refers to whether open 2G data services；1x access channel configurations refer to the accession to the quantity of channel, when the ginseng
When several values is larger, the probability mutually collided between the terminal of up channel can be reduced while launched；1x hand-over branch number and
DO hand-over branch number refers to the number of signals that 2G and 3G signal covering edge customer can receive simultaneously respectively, reduces branch's number
Sector coverage can be reduced, it will usually reduce sector and receive up transmission signal power；RC is configured to the number for reflecting user
According to transmission speed, when RC3 is changed into RC4, the good terminal of signal can pass data rapidly using transmission power surplus, general meeting
Reduce sector and receive up transmission signal power；TXGAIN refers to the transmission power of sector, and transmission power is smaller, sector covering model
Enclose smaller, it is smaller that general sector receives up transmission signal power.
The parameter and referential data that adjustment mould plate and parameter are descended in adjustment mould plate again under parameter are exemplarily only provided in table 1.
For other kinds of base station, it may be referred to the template and be adjusted, other adjustment can also be carried out, repeated no more here.
In the step S2122 of above-described embodiment, traditional upstream attenuation method can be used.However, in high interference
Under application scenarios, if descending gain is fixed, continue to increase upstream attenuation, may cause base station down covering edge terminal by
To interference, make up covering quality serious deterioration.
The present invention can solve the above problems by using the mode of upstream and downstream balance attenuation.Upstream and downstream balance declines
Subtract and refer to, base station carries out up-link decay and downlink attenuation by attenuator, and the pad value of up-link decay is with
The difference of the pad value of line link decay is within a preset range.Below with reference to Fig. 3 describe one embodiment of the invention it is up under
Row balance attenuation method.
Fig. 3 is the flow chart of one embodiment of upstream and downstream balance attenuation method of the present invention.As shown in figure 3, the implementation
The method of example includes：
Step S302, base station adjust the upstream attenuation value of up-link, the interference desired value of up-link is reached interference
Index reference value.
Base station can adjust the pad value of up-link step by step, so as to reach step by step the interference desired value of up-link
To interference index reference value.
Step S304, the pad value that base station determines according to upstream attenuation value and default domain of walker carry out downlink and declined
Subtract.
After up-link adjusts, downlink can set the pad value close with upstream attenuation value.For example, such as
Fruit upstream attenuation value is L, then the pad value of downlink can be the numerical value in the range of [L-3dB, L+3dB].
By using the above method, evenly up-link and downlink can be decayed, improve base station
Terminal covering quality.
The base station for being used to control uplink interference of one embodiment of the invention is described below with reference to Fig. 4.
Fig. 4 is the structure chart that the present invention is used to control one embodiment of the base station of uplink interference.As shown in figure 4, the reality
Applying the base station 40 of example includes：Whether interference monitoring module 41, the interference desired value for monitoring base station 40 are more than default wealthy family
Limit；Parameter lowers module 42, for when the interference desired value of base station 40 is more than default high threshold, according to adjustment mould plate under parameter
Reduce the uplink transmission power of base station 40；Control effect detection module 43, for by the interference desired value of reduction with it is default low
Thresholding is compared；Hardware attenuation module 44, for detecting the interference of the base station 40 when the control effect detection module
When desired value is more than default low threshold, link attenuation is carried out by attenuator.
Wherein, the strength indicator value that desired value is reception signal is disturbed, and/or, uplink transmission power includes terminal initial
The transmission power of base station 40 when the transmission power of base station 40 and/or terminal are surfed the Net during access.
The base station for being used to control uplink interference of another embodiment of the present invention is described below with reference to Fig. 5.
Fig. 5 is the structure chart that the present invention is used to control another embodiment of the base station of uplink interference.As shown in figure 5, should
The control effect detection module 43 of embodiment is further used for the interference desired value of reduction and default high threshold and low threshold
It is compared；Module 55 is also lowered in base station 40 again including parameter, is located at default height for the interference desired value when base station 40
When between thresholding and low threshold, adjustment mould plate is descended to reduce the uplink transmission power of base station again according to parameter；Wherein, parameter again under
Uplink transmission power parameter in adjustment mould plate is less than the uplink transmission power parameter under parameter in adjustment mould plate；Hardware attenuation module 44
It is further used for, when the interference desired value of base station is more than default high threshold, link attenuation being carried out by attenuator.
In addition, base station 40 can also include control effect secondary detection module 56.Control effect secondary detection module 56 is used
Compared with the interference desired value of base station 40 is carried out again with default low threshold；Hardware attenuation module 44 is used to work as control effect
When secondary detection module 56 detects that the interference desired value of base station 40 is more than default low threshold, line link is entered by attenuator and declined
Subtract.
Wherein, hardware attenuation module 44 can be further used for carrying out up-link decay and downlink attenuation, up
The difference of the pad value of link attenuation and the pad value of downlink attenuation is within a preset range.
Wherein, hardware attenuation module 44 can also include：Up-link attenuation units 542, for adjusting up-link
Upstream attenuation value, the interference desired value of up-link is set to reach interference index reference value；Downlink attenuation unit 544, is used for
Downlink attenuation is carried out according to the pad value that upstream attenuation value and default domain of walker determine.
In addition, base station 40 can also include：Hardware attenuating detection module 57, for judging using hardware decay mode
After block 44 carries out link attenuation, whether the interference desired value of base station 40 is higher than default low threshold；Fault warning module 58, use
In when the interference desired value of base station 40 is higher than default low threshold, judge that base station 40 is faulty.
In above-mentioned each embodiment, hardware attenuation module 44 can be built-in, or external.Below with reference to
Fig. 6 describes RRU (Radio Remote Unit, the remote radio list of attenuator built in the use of hardware attenuation module 44 of the present invention
Member) structural representation, wherein, the RRU of the embodiment is located inside base station 40.
Fig. 6 is the structure chart of RRU of the present invention one embodiment.As shown in fig. 6, the RRU60 of the embodiment includes：Interference
Desired value acquisition module 61, interference desired value monitoring module 62, D/A converter module 6422, upstream attenuation device 6424 and descending put
Big device 6442.
Wherein, disturb desired value acquisition module 61 to be used for the interference desired value for measuring base station in real time, and be sent to interference and refer to
Scale value monitoring module 62.It for example can be transmitter to disturb desired value acquisition module 61.
Disturb desired value monitoring module 62 to be located in the microprocessor of base station, mould is obtained for comparing interference desired value
The interference desired value and interference index reference value that block 61 is sent, up-link attenuation units are controlled according to the comparative result of the two
542 and downlink attenuation unit 544 decayed.
As needed, disturb desired value monitoring module 62 to be located at outside base station, i.e., set by other beyond base station
Corresponding module in standby control hardware attenuation module 44 carries out upstream attenuation and downstream attenuation.Up-link in previous embodiment
Attenuation units 542 can be D/A converter module 6422 and upstream attenuation device 6424 in the present embodiment.Upstream attenuation device 6424
Such as PIN diode attenuator can be used.
Downlink attenuation unit 544 in previous embodiment can be the downstream amplifier 6442 in the present embodiment,
RRU60 can be decayed by reducing the descending gain of downstream amplifier 6442 to downlink.
In addition, when carrying out downlink and being decayed, can also be from interference desired value monitoring module 62 to BBU
(Building Baseband Unit, baseband processing unit) reports current upstream attenuation value, and is set and increased by centralized network management
The transmitting gain of big sector carrier frequency, such as TXGAIN parameters, so as to downlink of decaying.
In another embodiment, RRU60 can also include digital intermediate frequency 63, upconverter 64, low-converter 65, annular
Device 66.Digital intermediate frequency 63 is connected with upconverter 64, low-converter 65 respectively, upconverter 64 and downlink attenuation unit
544 connections, low-converter is connected with up-link attenuation units 542, circulator 66 respectively with up-link attenuation units 562 and
Downlink attenuation unit 544 connects.
Structural representation of the present invention using the uplink interference control system of external attenuator is described below with reference to Fig. 7.
Fig. 7 is the structure chart of one embodiment of uplink interference control system of the present invention.As shown in fig. 7, the embodiment
System includes：Base station 40, coupler 72 and high power load 74.Coupler 72 is connected with base station, and the degree of coupling of coupler 72 is 7
Between~30dB, power termination 74 is connected with coupler.
In the application scenarios of high traffic, largely his network termination spurious signal interference base station is had.Therefore, coupler can
To be arranged to that there is the bigger degree of coupling, so as to realize the decay to base station transmitting power.
Furthermore, it is possible to the coupler of multiple models is equipped with for base station, and the maximum field strength in practical application scene is more
Change coupler.For example, when maximum field strength is -35dBm, the coupler that the degree of coupling is 7~15dB, preferably 10dB couplings can be used
Clutch；When maximum field strength is -30dBm, 10~15dB couplers, preferably 15dB couplers can be used.
In the above-described embodiments, the input of coupler 72 is connected with the RF output end of base station 40, coupler 72 it is straight
Go side is connected with power termination 74, and the coupled end of coupler 72 is connected with the antenna-feedback system that base station 40 is connected originally.
In addition, the method according to the invention is also implemented as a kind of computer program product, the computer program product
Including computer-readable medium, be stored with the computer-readable medium for perform the present invention method in limit it is above-mentioned
The computer program of function.Those skilled in the art will also understand is that, various exemplary with reference to described by disclosure herein
Logical block, module, circuit and algorithm steps may be implemented as the combination of electronic hardware, computer software or both.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (16)
- A kind of 1. uplink interference control method, it is characterised in that including：Whether the interference desired value of base station monitors base station is more than default high threshold；If the interference desired value of the base station is more than default high threshold, base station reduces the upper of base station according to adjustment mould plate under parameter Row transmission power；Base station is by the interference desired value of reduction compared with default low threshold；If the interference desired value of the base station is more than default low threshold, base station carries out link attenuation by attenuator.
- 2. according to the method for claim 1, it is characterised in that the base station by the interference desired value of reduction with it is default low Thresholding be compared including：Base station is by the interference desired value of reduction compared with default high threshold and low threshold；If the interference desired value of the base station is more than default low threshold, base station carries out link attenuation bag by attenuator Include：If the interference desired value of the base station is more than default high threshold, base station carries out link attenuation by attenuator；If the interference desired value of the base station between default high threshold and low threshold, lower again according to parameter by base station Template reduces the uplink transmission power of base station；Wherein, the parameter descends the uplink transmission power parameter in adjustment mould plate to be less than the up transmitting under parameter in adjustment mould plate again Power parameter.
- 3. according to the method for claim 2, it is characterised in that descend adjustment mould plate to reduce base station again according to parameter in base station After uplink transmission power, in addition to：Compared with base station carries out the interference desired value of base station again with default low threshold；If the interference desired value of the base station is more than default low threshold, base station carries out link attenuation by attenuator.
- 4. according to the method any one of claim 1-3, it is characterised in that line link is entered in the base station by attenuator Decay includes：Base station carries out up-link decay and downlink attenuation by attenuator, and the pad value of the up-link decay is with The difference of the pad value of line link decay is within a preset range.
- 5. according to the method for claim 4, it is characterised in that the base station by attenuator carry out up-link decay and Downlink attenuation includes：Base station adjusts the upstream attenuation value of up-link, the interference desired value of up-link is reached interference index reference value；The pad value that base station determines according to the upstream attenuation value and default domain of walker carries out downlink attenuation.
- 6. according to the method any one of claim 1-3, it is characterised in that enter line link by attenuator in base station and decline After subtracting, base station judges whether the interference desired value of base station is higher than default low threshold；If the interference desired value of base station is higher than default low threshold, judge that the base station is faulty.
- 7. according to the method any one of claim 1-3, it is characterised in thatThe interference desired value is the strength indicator value of reception signal, and/or,The uplink transmission power includes the transmitting of base station when the transmission power of base station and/or terminal are surfed the Net when terminal initial accesses Power.
- A kind of 8. base station for being used to control uplink interference, it is characterised in that including：Whether interference monitoring module, the interference desired value for monitoring base station are more than default high threshold；First parameter adjustment module, for when the interference desired value of the base station is more than default high threshold, according under parameter Adjustment mould plate reduces the uplink transmission power of base station；Control effect detection module, for by the interference desired value of reduction compared with default low threshold；Hardware attenuation module, the interference desired value for detecting the base station when the control effect detection module are more than default Low threshold when, link attenuation is carried out by attenuator.
- 9. base station according to claim 8, it is characterised in that the control effect detection module is further used for reducing Interference desired value compared with default high threshold and low threshold；The base station also includes the second parameter adjustment module, is located at default high threshold for the interference desired value when the base station When between low threshold, adjustment mould plate is descended to reduce the uplink transmission power of base station again according to parameter；Wherein, the parameter again under Uplink transmission power parameter in adjustment mould plate is less than the uplink transmission power parameter under parameter in adjustment mould plate；The hardware attenuation module is further used for when the interference desired value of the base station is more than default high threshold, by declining Subtract device and carry out link attenuation.
- 10. base station according to claim 9, it is characterised in that also including control effect secondary detection module, for by base Compared with the interference desired value stood is carried out again with default low threshold；The hardware attenuation module is used for when the control effect secondary detection module detects that the interference desired value of base station is more than During default low threshold, link attenuation is carried out by attenuator.
- 11. according to the base station any one of claim 8-10, it is characterised in that the hardware attenuation module is further used In progress up-link decay and downlink attenuation, the decay of the pad value and downlink attenuation of the up-link decay The difference of value is within a preset range.
- 12. base station according to claim 11, it is characterised in that the hardware attenuation module includes：Up-link attenuation units, for adjusting the upstream attenuation value of up-link, reach the interference desired value of up-link Disturb index reference value；Downlink attenuation unit, it is descending for being carried out according to the pad value of the upstream attenuation value and the determination of default domain of walker Link attenuation.
- 13. according to the base station any one of claim 8-10, it is characterised in that also include：Hardware attenuating detection module, for judging after link attenuation is carried out using hardware attenuation module, base station is done Disturb whether desired value is higher than default low threshold；Fault warning module, for when the interference desired value of base station is higher than default low threshold, judging that the base station is faulty.
- 14. according to the base station any one of claim 8-10, it is characterised in thatThe interference desired value is the strength indicator value of reception signal, and/or,The uplink transmission power includes the transmitting of base station when the transmission power of base station and/or terminal are surfed the Net when terminal initial accesses Power.
- 15. base station according to claim 8, it is characterised in that the hardware attenuation module includes interference desired value and obtained Unit, D/A converter module, upstream attenuation device and downstream amplifier；The interference desired value acquisition module is used for the interference desired value for measuring base station in real time, and is sent in the base station Portion and/or the interference desired value monitoring module of outside, the interference desired value monitoring module are used to compare interference desired value acquisition The interference desired value and interference index reference value that module is sent, and D/A converter module, upstream attenuation are controlled according to comparative result Device carries out upstream attenuation, and control downstream amplifier carries out downstream attenuation.
- A kind of 16. uplink interference control system, it is characterised in that including：Base station any one of claim 8-15,Coupler, be connected with the base station, the degree of coupling of the coupler between 7~30dB, and,Power termination, it is connected with the coupler.
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| CN201610852166.5A CN107872866B (en) | 2016-09-26 | 2016-09-26 | Uplink interference control method and system and base station for controlling uplink interference |
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| CN201610852166.5A CN107872866B (en) | 2016-09-26 | 2016-09-26 | Uplink interference control method and system and base station for controlling uplink interference |
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| CN112954785A (en) * | 2021-03-08 | 2021-06-11 | 中国人民解放军军事科学院战争研究院 | Base station power control method |
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