WO2015131654A1 - 一种定位基站干扰的方法及系统 - Google Patents

一种定位基站干扰的方法及系统 Download PDF

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Publication number
WO2015131654A1
WO2015131654A1 PCT/CN2014/096032 CN2014096032W WO2015131654A1 WO 2015131654 A1 WO2015131654 A1 WO 2015131654A1 CN 2014096032 W CN2014096032 W CN 2014096032W WO 2015131654 A1 WO2015131654 A1 WO 2015131654A1
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WIPO (PCT)
Prior art keywords
base station
interference
antenna
received power
narrowband
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PCT/CN2014/096032
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English (en)
French (fr)
Inventor
成军平
�田宏
张天鹏
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ZTE Corp
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ZTE Corp
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Priority to EP14884983.9A priority Critical patent/EP3197199B1/en
Priority to JP2017533668A priority patent/JP6475841B2/ja
Publication of WO2015131654A1 publication Critical patent/WO2015131654A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [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
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/15—Performance testing
    • H04B17/17—Detection of non-compliance or faulty performance, e.g. response deviations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and system for locating base station interference.
  • the mainstream 2G (Second Generation), 3G (3rd-Generation, 3rd generation) and 4G (4th-Generation, 4th generation) base stations adopt BBU (Base Band Unit) + RRU. (Radio Remote Unit) + architecture of the ESC antenna.
  • the cell cover radius is adjusted by adjusting the downtilt angle of the ESC antenna.
  • the active antenna is a new architecture in the form of a next-generation base station.
  • the 3GPP (3rd Generation Partnership Project) organization has conducted in-depth research in the LTE (Long Term Evolution) Release 12, and the R12 version will be released soon.
  • the AAS (Adaptive Antenna System) antenna can change the antenna tilt and the width of the lobes by adjusting the amplitude and phase of the feed network.
  • FIG. 1 is a schematic structural diagram of an existing LTE mobile communication system, which mainly includes: a core network, an access network, and an operation and maintenance center (ie, a network management system).
  • the network management system is composed of an operation and maintenance center.
  • the access network is composed of a base station (a node of LTE).
  • the base station includes a BBU (baseband processing unit), an RRU (radio frequency remote unit), and an antenna (radiation matrix).
  • the core network and the base station are connected through the S1 (interface between the core network and the access network) interface of the BBU.
  • the BBU and the RRU are connected by optical fibers.
  • the base station controls the downtilt angle of the antenna through an AISG (Antenna Interface Standards Group) cable; for the AAS antenna, the base station changes the antenna tilt and beam by changing its own feed network.
  • AISG Application Standards Group
  • pseudo base stations also appear in large numbers.
  • the pseudo base station not only eavesdrops on people's information, but also causes great interference to the existing network, resulting in the existing network.
  • the performance degradation is very strong. Since the type of interference and the cause of the interference source cannot be determined, the interfered base station cannot cancel or reduce the interference, and the normal operation cannot be performed.
  • the embodiment of the invention provides a method and a system for locating base station interference, which can determine the type of interference of the base station and the cause of the interference source, thereby quickly locating the interference source, reducing or canceling the interference, and improving the performance of the existing network.
  • the embodiment of the invention provides a method for locating base station interference, including:
  • the downtilt scanning function of the antenna of the base station is started, the downtilt angle of the antenna is adjusted for scanning, and the values of the broadband receiving power and the narrowband receiving power received by the base station under the corresponding downtilt angle are recorded;
  • the interference source is determined according to whether the value of the broadband received power and the narrowband received power varies with the downtilt angle of the antenna, and after the base station downlink transmission channel is turned off, whether the values of the broadband received power and the narrowband received power change.
  • Determining the interference source according to whether the value of the broadband received power and the narrowband received power varies with the downtilt angle of the antenna, and after the base station downlink transmission channel is turned off, whether the value of the broadband received power and the narrowband received power change includes:
  • the broadband receiving power and the narrowband receiving power are If the value is reduced and the interference signal disappears, it is determined that the interference source is inside the base station; if the downtilt angle of the antenna changes and the base station downlink transmission channel is turned off, the values of the broadband received power and the narrowband received power do not change. Then determine that the source of interference is outside the base station.
  • the method further includes:
  • the downtilt scanning function of the antenna of the base station; the preset condition is:
  • the value of the narrowband received power exceeds a preset narrowband receive power threshold
  • the value of the broadband received power exceeds a preset wideband receive power threshold.
  • the method further includes:
  • the transmitting power of the base station is half of the rated power of the base station, and the uplink frequency of the base station is the intermodulation frequency;
  • the interference source is a base station Antenna system.
  • the calculating the intermodulation frequency of intermodulation products within the entire bandwidth and within the wanted signal band including:
  • F1 and F2 are frequencies of upper and lower boundaries of the downlink frequency band in the useful signal band, and m and n are integers of 0 to 7, and m and n cannot be 0 at the same time.
  • the method further includes:
  • the values of the broadband receiving power and the narrowband receiving power are both When there is no change, it is judged whether the interference signal disappears when the downlink transmission channel of the base station is turned off, and if it disappears, it is determined that the interference source outside the base station is a micro signal enhancer;
  • the downtilt angle corresponding to the value of the recorded maximum wideband received power and the value of the maximum narrowband received power is taken as the azimuth of the interference source outside the base station.
  • the method further includes:
  • the method further includes:
  • the antenna is a smart antenna, and the maximum broadband receiving power value and maximum narrowband reception are performed After the value of the power corresponding to the downtilt angle is taken as the azimuth of the interference source outside the base station, the method further includes:
  • the angle of the maximum broadband received power per degree and the value of the maximum narrowband received power determine the position of the interference source outside the base station, and Y is the azimuth of the interference source outside the base station.
  • a system for locating base station interference comprising:
  • An antenna control module configured to: initiate a downtilt scanning function of the antenna of the base station, adjust a downtilt angle of the antenna to scan, and record a value of the broadband received power and the narrowband received power received by the base station at a corresponding downtilt angle;
  • the interference decision module is configured to: according to the relationship between the value of the broadband received power and the narrowband received power as a function of the downtilt angle of the antenna, and whether the value of the broadband received power and the narrowband received power changes after the downlink transmission channel of the base station is turned off To determine the source of the interference.
  • the interference decision module is configured to adjust the relationship between the value of the broadband received power and the narrowband received power according to the downtilt angle of the antenna and the broadband received power and the narrowband received power after the base station downlink transmission channel is closed, in the following manner. Whether the value changes to determine the source of the interference:
  • the broadband receiving power and the narrowband receiving power are both reduced, and the interference signal is If it disappears, it is determined that the interference source is inside the base station; if the broadband receiving power and the narrowband receiving power do not change after the antenna downtilt angle changes and the base station downlink transmission channel is turned off, it is determined that the interference source is outside the base station.
  • system further comprises:
  • the receiving power detecting module is configured to: before the tilting scanning function of the antenna of the base station is started, determine whether the call drop rate of the RRC user of the RRC exceeds a preset call drop threshold, and if yes, detect the base station Received broadband received power and narrowband received power;
  • the antenna control module is further configured to start the tilt scan function of the antenna of the base station when any one of the following preset conditions is met:
  • the narrowband received power value exceeds a preset narrowband receive power threshold
  • the broadband received power exceeds a preset wideband receive power threshold.
  • the interference decision module is further configured to calculate an intermodulation frequency of intermodulation products falling within the entire bandwidth and within the wanted signal band after the determining the interference source is inside the base station;
  • the downlink frequency of the base station is set to be two upper and lower boundary frequencies of the downlink frequency band of the useful signal, the transmission power of the base station is half of the rated power of the base station, and the uplink frequency of the base station is the intermodulation frequency;
  • the interference decision module is further configured to calculate an intermodulation frequency of intermodulation products falling within the entire bandwidth and within the wanted signal band in the following manner
  • F1 to F2 are upper and lower boundary frequencies of the downlink frequency band of the useful signal band, and m and n are integers of 0 to 7, and m and n cannot be 0 at the same time.
  • the system further includes: an interference position determining module connected to the interference decision module, wherein:
  • the interference decision module is further configured to: after determining that the interference source is outside the base station, after determining that the value of the broadband received power and the narrowband received power varies with the antenna downtilt angle, and the base station downlink transmission channel is closed, When the broadband receiving power and the narrowband receiving power do not change, judge When the downlink transmission channel of the base station is turned off, whether the interference signal disappears, and if it disappears, it is determined that the interference source is a miniature signal booster;
  • the interference position determining module is configured to: use the recorded maximum broadband received power value and the maximum narrowband received power value as the azimuth of the interference source outside the base station.
  • the system further includes: an interference azimuth determining module connected to the interference decision module, configured to: acquire a transmit power of an interference source external to the base station, and a broadband received power received by the base station;
  • the system further includes: an interference position determining module connected to the interference decision module, wherein:
  • the interference decision module is further configured to: after the determining that the interference source is outside the base station, send an instruction to the antenna control module to turn off the tilt scan function of the antenna;
  • the interference position determining module is configured to set a configuration frequency of the phase locked loop PLL in an uplink frequency band of the useful signal band, scan within the entire bandwidth of the base station, and record the broadband receiving power and the narrow band received by the base station a value of the received power, a frequency corresponding to the maximum broadband received power value and the maximum narrowband received power value is used as the frequency of the external fixed interference; setting an uplink frequency of the base station to a frequency of external fixed interference, and triggering the antenna control again
  • the module starts the downtilt scanning function of the antenna, and uses the recorded maximum broadband received power value and the maximum narrowband received power value as the azimuth of the interference source outside the base station;
  • the antenna control module is further configured to: after receiving the interference decision module command, turn off the tilt scan function of the antenna; and start the downtilt scan function of the antenna of the base station by using the trigger position determination module to adjust The downtilt angle of the antenna is scanned, and the values of the broadband received power and the narrowband received power received by the base station at the corresponding downtilt angle are recorded.
  • the antenna is a smart antenna
  • the interference position determining module is further configured to: after the determining that the maximum broadband received power value and the maximum narrowband received power value are the azimuth of the external fixed interference source,
  • the scanning of the smart antenna horizontal plane covers the sector, from -Y degree scanning to +Y degree, and recording the value of the broadband receiving power and the narrowband receiving power per degree of the smart antenna level, according to the maximum of the smart antenna level per degree
  • the angle corresponding to the broadband received power value and the maximum narrowband received power value determines the location of the interference source external to the base station, and Y is the azimuth of the interference source external to the base station.
  • Embodiments of the present invention also provide a computer program for implementing the method.
  • Embodiments of the present invention also provide a computer readable storage medium storing the computer program.
  • the method and system for locating base station interference provided by the embodiments of the present invention are directed to the problem that the current communication base station is interfered by the base station, and the type of the interference and the cause of the interference source are determined, and the interference source is quickly located, and the interference can be reduced or cancelled. Improve the performance of the existing network, thus maintaining the interests of operators.
  • 1 is a schematic structural diagram of an LTE mobile communication system
  • FIG. 2 is a flowchart of a method for locating base station interference in an embodiment
  • Figure 3 is a flow chart of positioning a miniature signal booster in an embodiment
  • FIG. 5 is a flowchart of locating internal interference of a base station in an embodiment
  • FIG. 6 is a structural diagram of a system for locating base station interference in an embodiment.
  • this embodiment provides a method for locating base station interference, including:
  • S101 Start a downtilt scanning function of the antenna of the base station, adjust a downtilt angle of the antenna to perform scanning, and record a value of the broadband receiving power and the narrowband receiving power received by the base station corresponding to the downtilt angle;
  • the broadband receiving power refers to the entire intermediate frequency band (the frequency band in the filter)
  • the received power within the narrowband receive power refers to the received power within the configured bandwidth of the network management system.
  • step S101 before starting the downtilt scanning function of the antenna of the base station, the method further includes:
  • the narrowband received power value exceeds a preset narrowband receive power threshold
  • the broadband receive power exceeds the preset wideband receive power threshold.
  • the call drop threshold of the RRC user is set according to an operator specified value, such as 5%, and the narrowband receive power threshold and the broadband receive power threshold may be, for example, 5% of the call drop rate of the RRC user.
  • the value of the received narrowband received power and wideband received power is set according to an operator specified value, such as 5%, and the narrowband receive power threshold and the broadband receive power threshold may be, for example, 5% of the call drop rate of the RRC user.
  • the antenna of the base station may be an electric adjustable antenna, an AAS antenna or a smart antenna.
  • S102 Determine a source of interference according to a relationship between the value of the broadband received power and the narrowband received power as a function of an antenna downtilt angle and whether the broadband received power and the narrowband received power are changed after the downlink transmission channel of the base station is turned off.
  • step S102 includes:
  • step S102a determining whether the value of the broadband received power and the narrowband received power varies according to a change in the antenna downtilt angle. If the antenna tilt angle does not change, step S102b is performed; if the antenna tilt angle changes, step S102c is performed. ;
  • the method further comprises the step of determining a source of internal interference of the base station:
  • the transmission power of the base station is half of the rated power of the base station, and the uplink frequency of the base station is the intermodulation frequency;
  • Intermodulation interference is the product of a signal passing through a nonlinear device.
  • a poorly connected antenna feeder system is equivalent to a nonlinear device.
  • many new frequency components are generated through nonlinear transformation. (Some linear combinations of input frequencies), these frequency components are called intermodulation products.
  • the calculating the intermodulation frequency of the intermodulation products falling within the entire bandwidth and within the useful signal band includes:
  • the frequency that falls into the corresponding frequency band includes one or more; wherein, the downlink frequency band of the useful signal band is F1 to F2, the uplink frequency band is F3 to F4, and the frequency band of the entire bandwidth is F5 to F6.
  • F1, F2, F3, F4, F5, and F6 are the upper and lower boundary frequencies of the corresponding frequency bands.
  • the values of m and n are integers of 0 to 7, and m and n cannot be 0 at the same time.
  • LTE/UMTS is a broadband system.
  • the downlink frequency refers to the transmission frequency.
  • the frequency range is F1 ⁇ F2.
  • the same uplink frequency refers to the receiving frequency. It usually refers to the narrowband receiving frequency.
  • the frequency range is F3 ⁇ F4.
  • the broadband receiving frequency is The frequency range is the frequency band F5 to F6 of the entire bandwidth.
  • the method further includes the step of determining the source of the interference:
  • the base station downlink transmission channel After determining that the value of the broadband receiving power and the narrowband receiving power varies with the antenna downtilt angle, and the base station downlink transmission channel is turned off, and the broadband receiving power and the narrowband receiving power do not change, determining to turn off the base station downlink transmitting channel Whether the interference signal disappears, and if it disappears, it is determined that the interference source is a miniature signal booster;
  • the downtilt angle corresponding to the maximum wideband received power value and the maximum narrowband received power value recorded in step S101 may be used as the azimuth of the miniature signal booster. It should be noted that when it is determined that the interference source is a micro signal booster, the receiving frequency of the base station is consistent with the interference frequency of the micro signal booster, and the maximum broadband receiving power value and the maximum narrowband receiving power value are equal, therefore, There is no inconsistency in the corresponding downtilt angles.
  • the method further comprises the step of determining a location of the source of interference:
  • the distance between the interference source and the base station is determined according to a channel transmission model formula (ie, a nonlinear relationship between spatial attenuation and distance).
  • the channel transmission model formula is slightly different for the calculation formulas under different transmission models, and can be viewed by referring to the wireless communication principle book.
  • the examples in the embodiment are as follows:
  • the received power of the power-RRU is calculated, and the distance between the interference source and the base station can be derived according to the distance formula of the RL.
  • the source of the interference is determined to be outside the base station (non- After the micro signal booster), it also includes:
  • the method further comprising the step of determining the orientation of the source of external interference:
  • the value of the broadband received power and the narrowband received power received by the base station, and the frequency corresponding to the maximum wideband received power value and the maximum narrowband received power value is used as the frequency of the external fixed interference; and the uplink frequency of the base station is set to external fixed interference.
  • Frequency simultaneously start the downtilt scanning function of the antenna, adjust the downtilt angle of the antenna to scan, and record the value of the broadband receiving power and the narrowband receiving power received by the base station at the corresponding downtilt angle, which will record the maximum
  • the down-tilt angle corresponding to the wideband received power value and the maximum narrowband received power value is taken as the azimuth of the external fixed interference.
  • the downward tilting angle of the antenna is adjusted for scanning, for example, from 0 degree scanning to X degree, wherein X degree is the maximum adjustment angle of the antenna.
  • X degree is the maximum adjustment angle of the antenna.
  • the method further includes:
  • the angle corresponding to the maximum broadband received power value and the maximum narrowband received power value determines the location of the external fixed interference source, and Y is the azimuth of the external fixed interference source.
  • the present embodiment provides a method for locating a location of interference of a miniature signal booster, including the following steps:
  • the base station collects the received narrowband received power (received power in the network configuration bandwidth of the network management system) and the broadband power receiving rate (the power in the entire intermediate frequency band) and the call drop rate of the current RRC user; When the call drop rate of the RRU user reaches 5 percent (or the operator specified value), the narrowband receive power value and the wideband receive power are recorded, and the two values are used as the decision thresholds of the narrowband receive power and the broadband power receive rate;
  • step S202 When the dropped call rate exceeds 5 percent, and the narrowband received power value or the broadband received power exceeds the preset threshold value preset in step S201, starting the tilt scan function of the ESC antenna/AAS antenna/smart antenna, 0 degree scan to X degree, and record the value of the broadband received power and the narrowband received power per degree of the antenna downtilt angle;
  • S203 If the value of the broadband receiving power and the narrowband receiving power varies with the antenna downtilt angle, and the base station downlink transmission channel is turned off, and the broadband receiving power and the narrowband receiving power are not changed, it may be determined that the interference is external fixed interference; If the received power value changes with the antenna downtilt angle and the RRU downlink transmit channel is turned off, the interference signal disappears, and the interference signals may be caused by the interference of the miniature signal booster;
  • the downtilt angle corresponding to the maximum wideband received power value and the maximum narrowband received power value recorded in step S202 is taken as the azimuth of the micro signal enhancer.
  • the value of R, where RL micro signal booster transmit power - RRU receive power, R is the distance between the external fixed interference source and the base station.
  • the method further includes:
  • Initiating scanning of the smart antenna horizontal coverage sector scanning from -Y degrees to +Y degrees, and recording the value of the broadband received power and the narrowband received power per degree of the smart antenna level, according to the smart antenna level per degree
  • the maximum broadband received power value and the angle corresponding to the maximum narrowband received power value The position of the external fixed interference source is determined, and Y is the azimuth of the external fixed interference source.
  • the embodiment provides a method for locating the location of external fixed interference, including the following steps:
  • Steps S301 to S302 are the same as steps S201 to S202;
  • S304 Determine an interference frequency and an azimuth angle of the external fixed interference
  • the method includes: changing the configuration frequency of the PLL in the range of F3 to F4, scanning within the entire bandwidth of the base station, and recording the received power pair (wideband receiving power and narrowband receiving power), and the maximum receiving power pair (maximum broadband receiving)
  • the frequency corresponding to the power value and the maximum narrowband received power value is the frequency of the external fixed interference; setting the uplink frequency of the base station to the frequency of the external fixed interference, and simultaneously starting the tilt scan function of the electronically tuned antenna/AAS antenna/smart antenna, 0 degree scan to X degree, and recording the value of the wideband received power and/or the narrowband received power per degree of the antenna downtilt angle, determining the maximum wideband received power value and the maximum narrowband received power value corresponding to the downtilt angle as the external fixed interference
  • the azimuth of the source In this way, the azimuth corresponding to the interference frequency and the interference frequency is obtained.
  • X degree is the maximum adjustment angle of the antenna.
  • the method further includes:
  • Initiating scanning of the smart antenna horizontal coverage sector scanning from -Y degrees to +Y degrees, and recording the value of the broadband received power and the narrowband received power per degree of the smart antenna level, according to the smart antenna level per degree
  • the maximum broadband received power value and the angle corresponding to the maximum narrowband received power value The position of the external fixed interference source is determined, and Y is the azimuth of the external fixed interference source.
  • the embodiment provides a process for locating the internal interference of the base station and determining the size of the passive intermodulation of the external antenna system of the base station, including the following steps:
  • Steps S401 to S402 are the same as steps S301 to S302;
  • S404 Calculate an intermodulation frequency of intermodulation products falling within the entire bandwidth and in the wanted signal band according to the uplink and downlink frequencies configured by the network management;
  • the downlink frequency refers to the transmission frequency, and the frequency range is F1 to F2.
  • the same uplink frequency refers to the reception frequency, which usually refers to the narrowband reception frequency, and the frequency range is F3 to F4.
  • the frequency range of the broadband reception frequency is the frequency band F5 of the entire bandwidth. ⁇ F6, F1, F2, F3, F4, F5, F6 are the upper and lower boundary frequencies of the corresponding frequency bands.
  • the downlink frequency band of the useful signal band configured by the network management is F1 to F2, and the uplink frequency band is F3 to F4, and the frequency band of the entire bandwidth is F5 to F6, and F1, F2, F3, F4, F5, and F6 are upper and lower bands of the corresponding frequency band.
  • the boundary frequency, m and n, is an integer from 0 to 7, and m and n cannot be 0 at the same time.
  • a downlink frequency (ie, a transmission frequency) of the base station to be two upper and lower boundary frequencies of the downlink frequency band of the useful signal, that is, F1 and F2, the transmission power is half of the rated power of the base station, and the uplink frequency (reception frequency) is set to step S404.
  • Intermodulation frequency f calculated in
  • S406 Detecting the narrowband received power and the broadband received power received by the base station, determining whether the broadband received power received by the base station exceeds a preset broadband receive power threshold, and/or whether the narrowband receive power exceeds a pre-predetermined Set the narrowband receive power threshold, if it is exceeded, you can determine The interference from the inside of the base station is caused by the poor connection of the antenna system, and the antenna feed needs to be reconnected.
  • the embodiment provides a system for locating base station interference, including:
  • the antenna control module is configured to: start a downtilt scanning function of the antenna of the base station, adjust a downtilt angle of the antenna to scan, and record a value of the broadband receiving power and the narrowband receiving power received by the base station at the corresponding downtilt angle;
  • the interference decision module is configured to determine the interference source according to the relationship between the broadband received power and the value of the narrowband received power as a function of the antenna downtilt angle and whether the broadband received power and the narrowband received power are changed after the downlink transmission channel of the base station is turned off.
  • the interference decision module is configured to: according to the relationship between the value of the broadband received power and the narrowband received power as a function of the antenna downtilt angle, and whether the broadband received power and the narrowband receive power occur after the base station downlink transmission channel is closed, Change to determine the source of the interference:
  • the broadband receiving power and the narrowband receiving power are both reduced, and the interference signal is If it disappears, it is determined that the interference source is inside the base station; if the broadband receiving power and the narrowband receiving power do not change after the antenna downtilt angle changes and the base station downlink transmission channel is turned off, it is determined that the interference source is outside the base station.
  • the system also includes:
  • the receiving power detecting module is configured to: before the tilting scanning function of the antenna of the base station is started, determine whether the call drop rate of the RRC user of the RRC exceeds a preset call drop threshold, and if yes, detect the base station receiving Broadband received power and narrowband received power;
  • the antenna control module is further configured to start the tilt scan function of the antenna of the base station when any one of the following preset conditions is met:
  • the narrowband received power value exceeds a preset narrowband receive power threshold
  • the broadband receive power exceeds the preset wideband receive power threshold.
  • the interference decision module is further configured to: after the determining that the interference comes from inside the base station, Identify sources of internal interference from the base station, including:
  • the downlink frequency of the base station is set to be two upper and lower boundary frequencies of the downlink frequency band of the useful signal, the transmission power of the base station is half of the rated power of the base station, and the uplink frequency of the base station is the intermodulation frequency;
  • the interference decision module is further configured to calculate an intermodulation frequency of intermodulation products falling within the entire bandwidth and within the wanted signal band, including:
  • F1 to F2 are upper and lower boundary frequencies of the downlink frequency band of the useful signal band, and m and n are integers of 0 to 7, and m and n cannot be 0 at the same time.
  • the interference decision module is further configured to determine a source of fixed interference external to the base station after determining that the interference is from external fixed interference, including:
  • the base station downlink transmission channel After determining that the value of the broadband receiving power and the narrowband receiving power varies with the antenna downtilt angle, and the base station downlink transmission channel is turned off, and the broadband receiving power and the narrowband receiving power do not change, further determining to turn off the base station downlink transmission Whether the interference signal disappears in the channel, and if it disappears, it is determined that the external fixed interference is interference from the miniature signal booster.
  • system of this embodiment further includes: an interference position determining module connected to the interference decision module, configured to determine an azimuth of the miniature signal booster, wherein:
  • the interference position determining module is configured to: use the recorded maximum broadband received power value and the maximum narrowband received power value as the azimuth angle of the miniature signal enhancer.
  • the interference position determining module is further configured to determine the location of the external fixed interference, including:
  • the distance between the external fixed interference source and the base station is obtained according to a channel transmission model formula.
  • the interference decision module is further configured to: after the determining the interference from the external fixed interference, send an instruction to the antenna control module to turn off the tilt scan function of the antenna;
  • the interference position determining module is configured to: set a configuration frequency of the phase locked loop PLL in an uplink frequency band of the useful signal band, scan within the entire bandwidth of the base station, and record the broadband receiving power received by the base station and The value of the narrowband received power, the frequency corresponding to the maximum broadband received power value and the maximum narrowband received power value is used as the frequency of the external fixed interference; setting the uplink frequency of the base station to the frequency of external fixed interference, and triggering the antenna again
  • the control module starts the downtilt scanning function of the antenna, and uses the recorded maximum broadband received power value and the maximum narrowband received power value as the azimuth angle of the external fixed interference source;
  • the antenna control module is further configured to: turn off the tilt scan function of the antenna after receiving the instruction of the interference decision module; and start the downtilt scan function of the antenna of the base station again under the trigger of the interference position determination module, The downtilt angle of the antenna is adjusted for scanning, and the values of the broadband received power and the narrowband received power received by the base station at the corresponding downtilt angle are recorded.
  • the accurate position of the external fixed interference can be accurately obtained by scanning the horizontal and vertical planes of the smart antenna.
  • the interference azimuth determining module is further configured to: after the determining that the maximum broadband received power value and the maximum narrowband received power value are the azimuth of the external fixed interference source, starting the smart antenna horizontal coverage sector Scanning, from -Y degree scanning to +Y degree, and recording the value of the broadband receiving power and the narrowband receiving power per degree of the smart antenna level, according to the maximum broadband receiving power value and the maximum narrow band per degree of the smart antenna level Angle determination corresponding to the received power value
  • the location of the external fixed interference source, Y is the azimuth of the external fixed interference source.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • each device/function module/functional unit in the above embodiment When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the method and system for locating base station interference provided in the foregoing embodiments are directed to the problem that the current communication base station is interfered by the base station, and the type of the interference and the cause of the interference source are determined, and the interference source is quickly located, and the interference can be reduced or cancelled. Improve the performance of the existing network, thus maintaining the interests of operators.

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Abstract

一种定位基站干扰的方法及系统，所述方法包括：启动基站的天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录相应下倾角度下基站接收到的宽带接收功率和窄带接收功率的值；根据所述宽带接收功率和窄带接收功率的值随天线的下倾角度变化的关系，以及关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值是否发生变化来确定干扰来源。

Description

一种定位基站干扰的方法及系统 技术领域
本发明涉及通信领域，具体涉及一种定位基站干扰的方法及系统。
背景技术
目前主流的2G(Second Generation，第二代)、3G(3rd-Generation，第三代)和4G(4th-Generation，第四代)基站都是采用BBU(Base band Unit，基带处理单元)+RRU(Radio Remote Unit，射频拉远单元)+电调天线的架构，通过调整电调天线的下倾角度来实现小区覆盖半径的调整。有源天线是下一代基站形式的一种新构架，3GPP(3rd Generation Partnership Project)组织在LTE(Long Term Evolution，长期演进)Release12中进行了深入研究，同时R12版本即将发布。AAS(Adaptive Antenna System，自适应天线系统)天线可以通过调整馈电网络的幅度和相位来改变天线倾角和波瓣的宽度。
图1给出了现有LTE移动通信系统的结构示意图，主要包括：核心网、接入网和操作维护中心(即，网管)。网管由操作维护中心构成，接入网由基站(LTE的一个节点)构成，基站包含BBU(基带处理单元)、RRU(射频拉远单元)和天线(辐射阵子)。核心网和基站之间通过BBU的S1(核心网和接入网之间的接口)接口相连。BBU和RRU通过光纤连接。对于传统基站而言，基站通过AISG(Antenna Interface Standards Group，电调天线)线缆控制天线的下倾角；对于AAS天线而言，基站通过改变自身的馈电网络实现天线倾角和波束的改变。
随着移动通信的大力发展，目前现网的2G、3G和4G基站达到几千万个，电磁环境复杂。由于各种各样的原因，导致目前基站常常受到外部干扰，而无法正常工作。目前国内由于网络规划等原因导致某些区域信号覆盖不好，私自架设的微型信号增强器,比如“手机伴侣”，增强覆盖，但是这类设备没有经过电信部门的许可，对现网基站造成严重干扰，导致基站瘫站；2G、3G和4G共站，由于保护间隔很小，导致临频干扰；随着风吹雨淋的，天馈系 统的连接变的恶化，自身也会对自身造成严重干扰；随着信息安全的发展，伪基站也大量出现，伪基站不但窃听人们的信息，并且对现网造成很大的干扰，导致现网性能下降非常厉害。由于无法确定干扰的类型以及干扰源的产生的原因，使得受干扰基站无法解除或降低干扰，而导致无法正常工作。
发明内容
本发明实施例提供一种定位基站干扰的方法及系统，能够确定基站干扰的类型以及干扰源产生的原因，从而对干扰源快速定位，降低或解除干扰，提高现网性能。
本发明实施例提供了一种定位基站干扰的方法，包括：
启动基站的天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录相应下倾角度下基站接收到的宽带接收功率和窄带接收功率的值；
根据所述宽带接收功率和窄带接收功率的值随天线的下倾角度变化的关系，以及关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值是否发生变化来确定干扰来源。
可选地，
所述根据所述宽带接收功率和窄带接收功率的值随天线的下倾角度变化的关系，以及关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值是否发生变化来确定干扰来源，包括：
判断所述宽带接收功率和窄带接收功率的值是否随天线的下倾角度变化而变化，如果不随天线的下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值均降低，且干扰信号消失，则确定干扰来源在基站内部；如果随天线的下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值均不发生变化，则确定干扰来源在基站外部。
可选地，
在所述启动基站的天线的倾角扫描功能之前，所述方法还包括：
判断无线资源控制协议RRC用户的掉话率是否超过预设的掉话阈值，如果超过，则检测基站接收到的宽带接收功率和窄带接收功率的值，在满足任意一个预设条件时，启动所述基站的天线的下倾角扫描功能；所述预设条件为：
所述窄带接收功率的值超过预设的窄带接收功率门限值；
所述宽带接收功率的值超过预设的宽带接收功率门限值。
可选地，
在所述确定干扰来源在基站内部之后，所述方法还包括：
计算在整个带宽内或有用信号带内的互调产物的互调频率；
设置所述基站的下行频率为有用信号带内下行频段的上、下边界的频率，所述基站的发射功率为所述基站额定功率的一半，所述基站的上行频率为所述互调频率；
当判断出所述宽带接收功率的值超过预设的宽带接收功率门限值，和/或所述窄带接收功率的值超过预设的窄带接收功率门限值时，则确定干扰来源为基站的天馈系统。
可选地，
所述计算在整个带宽内和有用信号带内的互调产物的互调频率，包括：
计算互调频率f＝m*F1±n*F2，判断所述f是否落在有用信号带内上行频段或者整个带宽的频段内，如果落在所述有用信号带内上行频段或者整个带宽的频段内，则记录落入相应频段的频率为互调频率；
其中，F1、F2为所述有用信号带内下行频段的上、下边界的频率，m、n的取值为0～7的整数，且m和n不能同时为0。
可选地，
所述确定干扰来源在基站外部之后，还包括：
在判断出所述宽带接收功率和窄带接收功率的值随天线的下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值均 不发生变化时，判断关闭基站下行发射通道时，干扰信号是否消失，如果消失，则确定所述基站外部的干扰来源为微型信号增强器；
将记录的最大宽带接收功率的值和最大窄带接收功率的值对应的下倾角度作为所述基站外部的干扰来源的方位角。
可选地，
在所述确定干扰来源在基站外部之后，所述方法还包括：
获取基站外部的干扰来源的发射功率以及所述基站接收到的宽带接收功率的值；
计算基站外部的干扰的空间衰减RL＝所述基站外部的干扰源的发射功率-所述基站接收到的宽带接收功率；
根据信道传输模型公式求得所述基站外部干扰来源与所述基站之间的距离。
可选地，
在所述确定干扰来源在基站外部之后，所述方法还包括：
关闭所述天线的下倾角扫描功能；
将锁相环PLL的配置频率设置在有用信号带内上行频段内，在所述基站的整个带宽内扫描，并且记录所述基站接收到的宽带接收功率和窄带接收功率的值，将最大宽带接收功率的值和最大窄带接收功率的值对应的频率作为所述基站外部的干扰的频率；
设置所述基站的上行频率为基站外部干扰的频率，同时再次启动所述天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录相应下倾角度下基站接收到的宽带接收功率和窄带接收功率的值，将记录的最大宽带接收功率的值和最大窄带接收功率的值对应的下倾角度作为所述基站外部的干扰来源的方位角。
可选地，
所述天线为智能天线，在所述将最大宽带接收功率的值和最大窄带接收 功率的值对应的下倾角度作为所述基站外部的干扰来源的方位角之后，还包括：
启动所述智能天线的水平面覆盖扇区的扫描功能，从-Y度扫描到+Y度，并记录所述智能天线的水平面每度的宽带接收功率和窄带接收功率的值，根据所述智能天线的水平面每度的最大宽带接收功率的值和最大窄带接收功率的值对应的角度确定所述基站外部的干扰来源的位置，Y为所述基站外部的干扰来源的方位角。
一种定位基站干扰的系统，包括：
天线控制模块，其设置：启动基站的天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录相应下倾角度下基站接收到的宽带接收功率和窄带接收功率的值；以及
干扰判决模块，其设置：根据所述宽带接收功率和窄带接收功率的值随天线的下倾角变化的关系，以及关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值是否发生变化来确定干扰来源。
可选地，
所述干扰判决模块，是设置为以如下方式根据所述宽带接收功率和窄带接收功率的值随天线的下倾角度变化的关系以及关闭基站下行发射通道后所述宽带接收功率和窄带接收功率的值是否发生变化来确定干扰来源：
判断所述宽带接收功率和窄带接收功率的值是否随天线下倾角度变化，如果不随天线下倾角度变化，且关闭基站下行发射通道后所述宽带接收功率和窄带接收功率均降低，且干扰信号消失，则确定干扰来源在基站内部；如果随天线下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率均不发生变化，则确定干扰来源在基站外部。
可选地，该系统还包括：
接收功率检测模块，其设置为：在所述启动所述基站的天线的倾角扫描功能之前，判断无线资源控制协议RRC用户的掉话率是否超过预设的掉话阈值，如果超过，则检测基站接收到的宽带接收功率和窄带接收功率；
所述天线控制模块，还设置为在满足以下任意一个预设条件时，启动所述基站的天线的倾角扫描功能：
所述窄带接收功率值超过预设的窄带接收功率门限值；
所述宽带接收功率超过预设的宽带接收功率门限值。
可选地，
所述干扰判决模块，还设置为在所述确定干扰来源在基站内部之后，计算落在整个带宽内和有用信号带内的互调产物的互调频率；
设置所述基站的下行频率为有用信号带下行频段的两个上下边界频率，所述基站的发射功率大小为所述基站额定功率的一半，所述基站的上行频率为所述互调频率；
重新判断所述基站接收到的所述宽带接收功率是否超过预设的宽带接收功率门限值，和/或所述窄带接收功率是否超过预设的窄带接收功率门限值，如果超过，则确定干扰来源为基站的天馈系统。
可选地，
所述干扰判决模块，还设置为以如下方式计算落在整个带宽内和有用信号带内的互调产物的互调频率
计算频率f＝m*F1±n*F2，判断f是否落在有用信号带的上行频段或者整个带宽的频段内，如果落在所述有用信号带的上行频段或者整个带宽的频段内，则记录落入相应频段的频率为互调频率；
其中，F1～F2为所述有用信号带的下行频段的上下边界频率，m、n的取值为0～7的整数，且m和n不能同时为0。
可选地，该系统还包括：与所述干扰判决模块相连的干扰方位确定模块，其中：
所述干扰判决模块，还设置为：在确定干扰源在基站外部之后，在判断出所述宽带接收功率和窄带接收功率的值随天线下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率均不发生变化时，判断 关闭基站下行发射通道时，干扰信号是否消失，如果消失，则确定所述干扰来源为微型信号增强器；
所述干扰方位确定模块，设置为：将记录的最大宽带接收功率值和最大窄带接收功率值对应的下倾角度作为所述基站外部的干扰来源的方位角。
可选地，该系统还包括：与所述干扰判决模块相连的干扰方位确定模块，设置为：获取基站外部的干扰来源的发射功率以及所述基站接收到的宽带接收功率；
计算外部固定干扰的空间衰减RL＝所述基站外部的干扰来源的发射功率-所述基站接收到的宽带接收功率；
根据信道传输模型公式求得所述基站外部的干扰来源与所述基站之间的距离。
可选地，该系统还包括：与所述干扰判决模块相连的干扰方位确定模块，其中：
所述干扰判决模块，还设置为在所述确定干扰来源在所述基站外部之后，向所述天线控制模块发送关闭所述天线的倾角扫描功能的指令；
所述干扰方位确定模块，设置为将锁相环PLL的配置频率设置在有用信号带的上行频段内，在所述基站的整个带宽内扫描，并且记录所述基站接收到的宽带接收功率和窄带接收功率的值，将最大宽带接收功率值和最大窄带接收功率值对应的频率作为所述外部固定干扰的频率；设置所述基站的上行频率为外部固定干扰的频率，同时再次触发所述天线控制模块启动所述天线的下倾角扫描功能，将记录的最大宽带接收功率值和最大窄带接收功率值对应的下倾角度作为所述基站外部的干扰来源的方位角；
所述天线控制模块，还设置为在接收到所述干扰判决模块指令后关闭所述天线的倾角扫描功能；在所述干扰方位确定模块的触发下再次启动基站的天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录在相应下倾角度基站接收到的宽带接收功率和窄带接收功率的值。
可选地，
所述天线为智能天线，所述干扰方位确定模块，还设置为：在所述确定最大宽带接收功率值和最大窄带接收功率值对应的角度为所述外部固定干扰来源的方位角之后，启动所述智能天线水平面覆盖扇区的扫描，从-Y度扫描到+Y度，并记录所述智能天线水平面每度的宽带接收功率和窄带接收功率的值，根据所述智能天线水平面每度的最大宽带接收功率值和最大窄带接收功率值对应的角度确定所述基站外部的干扰来源的位置，Y为所述基站外部的干扰来源的方位角。
本发明实施例还提供一种实现所述方法的计算机程序。
本发明实施例还提供一种存储所述计算机程序的计算机可读存储介质。
本发明实施例提供的定位基站干扰的方法及系统，针对目前通信基站受干扰导致基站无法正常工作的问题，判断干扰的类型以及干扰源产生的原因，对干扰源快速定位，能够降低或解除干扰，提高现网性能，从而维护了运营商的利益。
附图概述
图1是LTE移动通信系统的结构示意图；
图2是实施例中定位基站干扰的方法的流程图；
图3是实施例中定位微型信号增强器的流程图；
图4是实施例中定位外部固定干扰的流程图；
图5是实施例中定位基站内部干扰的流程图；
图6是实施例中定位基站干扰的系统结构图。
本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
实施例：
如图2所示，本实施例提供了一种定位基站干扰的方法，包括：
S101：启动基站的天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录在相应下倾角度基站接收到的宽带接收功率和窄带接收功率的值；
调整天线的下倾角度进行扫描，比如从0度扫描到X度，其中，X度为所述天线的最大调整角度，本实施例中，宽带接收功率是指整个中频带(滤波器中频带)内的接收功率，窄带接收功率是指网管后台配置带宽内的接收功率。
在步骤S101中，在启动基站的天线的下倾角扫描功能之前，还包括：
判断无线资源控制协议(Radio Resource Control，简称RRC)用户的掉话率是否超过预设的掉话阈值，如果超过，则检测基站接收到的宽带接收功率和窄带接收功率，在满足以下任意一个预设条件时，启动所述基站的天线的倾角扫描功能：
窄带接收功率值超过预设的窄带接收功率门限值；
宽带接收功率超过预设的宽带接收功率门限值。
所述RRC用户的掉话阈值根据运营商规定值设定，比如5％，所述窄带接收功率门限值和宽带接收功率门限值比如可以是RRC用户的掉话率为5％时，基站接收到的窄带接收功率和宽带接收功率的值。
其中，基站的天线可以为电调天线、AAS天线或智能天线。
S102：根据所述宽带接收功率和窄带接收功率的值随天线下倾角变化的关系以及关闭基站下行发射通道后所述宽带接收功率和窄带接收功率是否发生变化来确定干扰来源。
其中，步骤S102包括：
S102a：判断所述宽带接收功率和窄带接收功率的值是否随天线下倾角度的变化而变化，如果不随天线下倾角度变化，则执行步骤S102b；如果随天线下倾角度变化，则执行步骤S102c；
S102b：如果不随天线下倾角度变化，且关闭基站下行发射通道后所述宽带接收功率和窄带接收功率均降低，且干扰信号消失，则确定干扰来自基站 内部；
其中，在所述确定干扰来自基站内部之后，所述方法还包括确定基站内部干扰的来源的步骤：
计算落在整个带宽内和有用信号带内的互调产物的互调频率；
设置所述基站的下行频率为有用信号带下行频段的两个上下边界频率F1和F2，所述基站的发射功率大小为所述基站额定功率的一半，所述基站的上行频率为所述互调频率；
重新判断所述基站接收到的所述宽带接收功率是否超过预设的宽带接收功率门限值，和/或所述窄带接收功率是否超过预设的窄带接收功率门限值，如果超过，则确定干扰由基站的天馈系统连接不好导致，则需重新连接天馈。
互调干扰是信号经过非线性设备的产物。连接不好的天馈系统就相当于非线性设备，当多个不同频率的信号同时经过连接不好的天馈系统(非线性设备)传输时，经过非线性变换，会产生许多新的频率分量(输入频率的一些线性组合)，这些频率分量称为互调产物。
其中，所述计算落在整个带宽内和有用信号带内的互调产物的互调频率，包括：
计算频率f＝m*F1±n*F2，判断f是否落在有用信号带的上行频段或者整个带宽的频段内，如果落在所述有用信号带的上行频段或者整个带宽的频段内，则记录落入相应频段的频率为互调频率；
在本实施例中，落入相应频段的频率包括一个或多个；其中，所述有用信号带的下行频段为F1～F2、上行频段为F3～F4，所述整个带宽的频段为F5～F6，F1、F2、F3、F4、F5、F6为相应频段的上下边界频率，m、n的取值为0～7的整数，且m和n不能同时为0。
LTE/UMTS是一个宽带系统，下行频率是指发射频率，频率范围是F1～F2，同样上行频率是指接收频率，通常是指窄带接收频率，频率范围是F3～F4，另外，宽带接收频率的频率范围是整个带宽的频带F5～F6。
S102c：如果随天线下倾角度变化，并且关闭基站下行发射通道后，宽带接收功率和窄带接收功率均不发生变化，则确定干扰来自外部。
此外，所述确定干扰来自外部之后，还包括确定干扰来源的步骤：
在判断出所述宽带接收功率和窄带接收功率的值随天线下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率均不发生变化时，判断关闭基站下行发射通道时，干扰信号是否消失，如果消失，则确定所述干扰来源为微型信号增强器；
确定所述干扰来源为微型信号增强器后，可以将步骤S101中记录的最大宽带接收功率值和最大窄带接收功率值对应的下倾角度作为所述微型信号增强器的方位角。需要说明的是，当确定所述干扰来源为微型信号增强器，基站的接收频率与微型信号增强器的干扰频率一致，最大宽带接收功率值和最大窄带接收功率值两者是相等的，所以，两者对应的下倾角度不会出现不一致的情况。
此外，作为一种可选的方式，在确定所述干扰来源为微型信号增强器之后，所述方法还包括确定干扰来源的位置的步骤：
获取干扰来源的发射功率以及所述基站接收到的宽带接收功率；
计算外部固定干扰的空间衰减RL＝所述外部固定干扰的发射功率-所述基站接收到的宽带接收功率；
根据信道传输模型公式(即，空间衰减与距离的非线性关系式)求得所述干扰来源与所述基站之间的距离。
其中，信道传输模型公式对于不同传输模型下的计算公式略有不同，可以参考无线通信原理书籍进行查看，本实施例中举例说明如下：
RL＝C+X*lg(F)MHz+X*lg(R)km，其中C为空间自由传输模型下的常数32.4,X也是空间自由传输模型下的系数，F为当前上行频率，F＝(F1+F2)/2，R为所述外部干扰来源与所述基站之间的距离，以跟踪微型信号增强器的发射功率为10毫瓦为例，可以根据RL＝微型信号增强器的发射功率-RRU的接收功率，计算出RL的值，再根据RL的距离公式则可以推算出所述干扰来源与所述基站之间的距离。
此外，作为另一种可选的方式，在所述确定干扰来源为在基站外部(非 微型信号增强器)之后，还包括：
关闭所述天线的倾角扫描功能，所述方法还包括确定外部干扰来源的方位的步骤：
将锁相环(phase-locked loop，简称PLL)的配置频率设置在有用信号带的上行频段(F3～F4)内，在所述基站的整个带宽(F5～F6)内扫描，并且记录所述基站接收到的宽带接收功率和窄带接收功率的值，将最大宽带接收功率值和最大窄带接收功率值对应的频率作为所述外部固定干扰的频率；设置所述基站的上行频率为外部固定干扰的频率，同时再次启动所述天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录在相应下倾角度基站接收到的宽带接收功率和窄带接收功率的值，将记录的最大宽带接收功率值和最大窄带接收功率值对应的下倾角度作为所述外部固定干扰的方位角。
其中，调整天线的下倾角度进行扫描，比如从0度扫描到X度，其中，X度为所述天线的最大调整角度。另外，当基站的接收频率设置为外部干扰频率的时候，最大宽带接收功率值和最大窄带接收功率值两者是相等的，所以，两者对应的下倾角度不会出现不一致的情况。
此外，作为另一种可选的方式，如果该基站支持智能天线，通过智能天线水平面和垂直面的扫描可以准确得到外部固定干扰来源(如微型信号增强器)的准确位置。在在所述确定最大宽带接收功率值和最大窄带接收功率值对应的角度为所述外部固定干扰来源(其中，也包括微型信号增强器)的方位角之后，还包括：
启动所述智能天线水平面覆盖扇区的扫描，从-Y度扫描到+Y度，并记录所述智能天线水平面每度的宽带接收功率和窄带接收功率的值，根据所述智能天线水平面每度的最大宽带接收功率值和最大窄带接收功率值对应的角度确定所述外部固定干扰来源的位置，Y为所述外部固定干扰来源的方位角。
在一个应用示例中，如图3所示，本实施例提供了一种定位微型信号增强器干扰的位置的方法，包括以下步骤：
S201：基站统计接收到的窄带接收功率(网管后台配置带宽内的接收功率)和宽带功接收率(整个中频带内的功率)以及目前RRC用户的掉话率； 当RRU用户的掉话率达到百分之五(或者运行商规定值)，记录窄带接收功率值和宽带接收功率，并将这两个值作为窄带接收功率和宽带功接收率的判决门限；
S202：当掉话率超过百分之五，且窄带接收功率值或宽带接收功率超过步骤S201中预置的判决门限值时，启动电调天线/AAS天线/智能天线的倾角扫描功能，从0度扫描到X度，并且记录天线下倾角每度的宽带接收功率和窄带接收功率的值；
S203：如果所述宽带接收功率和窄带接收功率的值随天线下倾角度变化，并且关闭基站下行发射通道，发现宽带接收功率和窄带接收功率均不发生变化，那么可以判断干扰是外部固定干扰；如果接收到的功率值随天线下倾角度变化，并且关闭RRU下行发射通道时，干扰信号消失，那么这些干扰信号有可能来自于微型信号增强器的干扰；
S204：确定微型信号增强器的方位角；
将步骤S202中记录的最大宽带接收功率值和最大窄带接收功率值对应的下倾角度作为微型信号增强器的方位角。
S205：确定微型信号增强器距基站的距离；
例如，跟踪微型信号增强器的发射功率为10毫瓦，并获取RRU的接收功率，并计算空间衰减RL，根据RL＝C+X*lg(F)MHz+X*lg(R)km,推算出R的值，其中，RL＝微型信号增强器发射功率-RRU接收功率，R即为外部固定干扰来源与基站之间的距离。
S206：如果该基站支持智能天线，通过智能天线水平面和垂直面的扫描可以准确得到微型信号增强器的准确位置：
在所述确定最大宽带接收功率值和最大窄带接收功率值对应的角度为所述外部固定干扰的方位角之后，还包括：
启动所述智能天线水平面覆盖扇区的扫描，从-Y度扫描到+Y度，并记录所述智能天线水平面每度的宽带接收功率和窄带接收功率的值，根据所述智能天线水平面每度的最大宽带接收功率值和最大窄带接收功率值对应的角 度确定所述外部固定干扰来源的位置，Y为所述外部固定干扰来源的方位角。
在一个应用示例中，如图4所示，本实施例提供了一种定位外部固定干扰的位置的方法，包括以下步骤：
步骤S301～S302与步骤S201～S202相同；
S303：如果所述宽带接收功率和窄带接收功率的值随天线下倾角度变化，并且关闭基站下行发射通道，发现宽带接收功率和窄带接收功率均不发生变化，那么可以判断干扰是外部固定干扰；如果接收到的功率值随天线下倾角度变化，并且关闭RRU下行发射通道时，干扰信号没有消失，那么这些干扰信号有可能来自于外部固定干扰来源，关闭天线的倾角扫描功能；
S304：确定外部固定干扰的干扰频率和方位角；
其中，具体包括：更改PLL的配置频率位于F3～F4的范围内，在基站整个带宽内扫描，并且记录接收到的功率对(宽带接收功率和窄带接收功率)，最大接收功率对(最大宽带接收功率值和最大窄带接收功率值)对应的频率就是外部固定干扰的频率；设置基站的上行频率为该外部固定干扰的频率，同时再次启动电调天线/AAS天线/智能天线的倾角扫描功能，从0度扫描到X度，并且记录天线下倾角每度的宽带接收功率和/或窄带接收功率的值，确定最大宽带接收功率值和最大窄带接收功率值对应的下倾角度为所述外部固定干扰来源的方位角。这样就得到了干扰频率和干扰频率对应的方位角。
其中，X度为天线的最大调整角度。
S305：如果该基站支持智能天线，通过智能天线水平面和垂直面的扫描可以准确得到外部固定干扰来源的准确位置：
在所述确定最大宽带接收功率值和最大窄带接收功率值对应的下倾角度为所述外部固定干扰来源的方位角之后，还包括：
启动所述智能天线水平面覆盖扇区的扫描，从-Y度扫描到+Y度，并记录所述智能天线水平面每度的宽带接收功率和窄带接收功率的值，根据所述智能天线水平面每度的最大宽带接收功率值和最大窄带接收功率值对应的角 度确定所述外部固定干扰来源的位置，Y为所述外部固定干扰来源的方位角。
在另一个应用示例中，如图5所示，本实施例提供了一种定位基站内部干扰，判断基站外部天馈系统无源互调的大小的流程，包括以下步骤：
步骤S401～S402与步骤S301～S302相同；
S403：如果接收到的宽带接收功率和窄带接收功率的值不随天线下倾角度变化，并且关闭基站下行发射通道，宽带接收功率和窄带接收功率均降低，干扰信号消失，说明干扰来自基站内部，有可能是基站天馈系统的连接不好导致无源互调过高导致；
S404：根据网管配置的上下行频率，计算落在整个带宽内和有用信号带内的互调产物的互调频率；
下行频率是指发射频率，频率范围是F1～F2，同样上行频率是指接收频率，通常是指窄带接收频率，频率范围是F3～F4，另外，宽带接收频率的频率范围是整个带宽的频带F5～F6，F1、F2、F3、F4、F5、F6为相应频段的上下边界频率。
其中，计算频率f＝m*F1±n*F2，判断f是否落在有用信号带的上行频段或者整个带宽的频段内，如果落在所述有用信号带的上行频段或者整个带宽的频段内，则记录落入相应频段的频率为互调频率；
其中，网管配置的有用信号带的下行频段为F1～F2、上行频段为F3～F4，所述整个带宽的频段为F5～F6，F1、F2、F3、F4、F5、F6为相应频段的上下边界频率，m、n的取值为0～7的整数，且m和n不能同时为0。
S405：设置基站的下行频率(即发射频率)为有用信号带下行频段的两个上下边界频率，即F1和F2，发射功率大小为基站额定功率的一半，设置上行频率(接收频率)为步骤S404中计算得到的互调频率f；
S406：检测基站接收到的窄带接收功率和宽带接收功率，判断所述基站接收到的所述宽带接收功率是否超过预设的宽带接收功率门限值，和/或所述窄带接收功率是否超过预设的窄带接收功率门限值，如果超过，则可以确定 该来自基站内部的干扰是由天线系统连接不好导致，需要重新连接天馈。
如图6所示，本实施例提供了一种定位基站干扰的系统，包括：
天线控制模块，设置为：启动基站的天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录在相应下倾角度基站接收到的宽带接收功率和窄带接收功率的值；
干扰判决模块，设置为：根据所述宽带接收功率和窄带接收功率的值随天线下倾角变化的关系以及关闭基站下行发射通道后所述宽带接收功率和窄带接收功率是否发生变化来确定干扰来源。
其中，所述干扰判决模块，设置为以如下方式根据所述宽带接收功率和窄带接收功率的值随天线下倾角变化的关系以及关闭基站下行发射通道后所述宽带接收功率和窄带接收功率是否发生变化来确定干扰来源：
判断所述宽带接收功率和窄带接收功率的值是否随天线下倾角度变化，如果不随天线下倾角度变化，且关闭基站下行发射通道后所述宽带接收功率和窄带接收功率均降低，且干扰信号消失，则确定干扰来源在基站内部；如果随天线下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率均不发生变化，则确定干扰来源在基站外部。
其中，本系统还包括：
接收功率检测模块，设置为：在所述启动所述基站的天线的倾角扫描功能之前，判断无线资源控制协议RRC用户的掉话率是否超过预设的掉话阈值，如果超过，则检测基站接收到的宽带接收功率和窄带接收功率；
所述天线控制模块，还设置为在满足以下任意一个预设条件时，启动所述基站的天线的倾角扫描功能：
窄带接收功率值超过预设的窄带接收功率门限值；
宽带接收功率超过预设的宽带接收功率门限值。
其中，所述干扰判决模块，还设置为在所述确定干扰来自基站内部之后， 确定基站内部干扰的来源，包括：
计算落在整个带宽内和有用信号带内的互调产物的互调频率；
设置所述基站的下行频率为有用信号带下行频段的两个上下边界频率，所述基站的发射功率大小为所述基站额定功率的一半，所述基站的上行频率为所述互调频率；
重新判断所述基站接收到的所述宽带接收功率是否超过预设的宽带接收功率门限值，和/或所述窄带接收功率是否超过预设的窄带接收功率门限值，如果超过，则确定干扰由基站的天馈系统连接不好导致。
其中，所述干扰判决模块，还设置为计算落在整个带宽内和有用信号带内的互调产物的互调频率，包括：
计算频率f＝m*F1±n*F2，判断f是否落在有用信号带的上行频段或者整个带宽的频段内，如果落在所述有用信号带的上行频段或者整个带宽的频段内，则记录落入相应频段的频率为互调频率；
其中，F1～F2为所述有用信号带的下行频段的上下边界频率，m、n的取值为0～7的整数，且m和n不能同时为0。
此外，所述干扰判决模块，还设置为在确定干扰来自外部固定干扰之后，确定基站外部固定干扰的来源，包括：
在判断出所述宽带接收功率和窄带接收功率的值随天线下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率均不发生变化时，进一步判断关闭基站下行发射通道时，干扰信号是否消失，如果消失，则确定所述外部固定干扰为来自于微型信号增强器的干扰。
作为一种可选的方式，本实施例的系统还包括：与所述干扰判决模块相连的干扰方位确定模块，设置为确定微型信号增强器的方位角，其中：
所述干扰方位确定模块，设置为：将记录的最大宽带接收功率值和最大窄带接收功率值对应的下倾角度作为微型信号增强器的方位角。
此外，作为一种可选的方式，以外部干扰来自微型信号增强器为例，所述干扰方位确定模块还用于确定外部固定干扰的位置，包括：
获取外部固定干扰来源的发射功率以及所述基站接收到的宽带接收功率；
计算外部固定干扰来源的空间衰减RL＝所述外部固定干扰的发射功率-所述基站接收到的宽带接收功率；
根据信道传输模型公式求得所述外部固定干扰来源与所述基站之间的距离。
作为另外一种可选的方式，所述干扰判决模块，还设置为：在所述确定干扰来自外部固定干扰之后，向所述天线控制模块发送关闭所述天线的倾角扫描功能的指令；
所述干扰方位确定模块，设置为：将锁相环PLL的配置频率设置在有用信号带的上行频段内，在所述基站的整个带宽内扫描，并且记录所述基站接收到的宽带接收功率和窄带接收功率的值，将最大宽带接收功率值和最大窄带接收功率值对应的频率作为所述外部固定干扰的频率；设置所述基站的上行频率为外部固定干扰的频率，同时再次触发所述天线控制模块启动所述天线的下倾角扫描功能，将记录的最大宽带接收功率值和最大窄带接收功率值对应的下倾角度作为所述外部固定干扰来源的方位角；
所述天线控制模块，还设置为：在接收到所述干扰判决模块指令后关闭所述天线的倾角扫描功能；在所述干扰方位确定模块的触发下再次启动基站的天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录在相应下倾角度基站接收到的宽带接收功率和窄带接收功率的值。
此外，作为另一种可选的方式，如果该基站支持智能天线，通过智能天线水平面和垂直面的扫描可以准确得到外部固定干扰(其中也包括微型信号增强器)的准确位置。
所述干扰方位确定模块，还设置为：在所述确定最大宽带接收功率值和最大窄带接收功率值对应的角度为所述外部固定干扰来源的方位角之后，启动所述智能天线水平面覆盖扇区的扫描，从-Y度扫描到+Y度，并记录所述智能天线水平面每度的宽带接收功率和窄带接收功率的值，根据所述智能天线水平面每度的最大宽带接收功率值和最大窄带接收功率值对应的角度确定 所述外部固定干扰来源的位置，Y为所述外部固定干扰来源的方位角。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
上述实施例中的各装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的各装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
工业实用性
上述实施例中提供的定位基站干扰的方法及系统，针对目前通信基站受干扰导致基站无法正常工作的问题，判断干扰的类型以及干扰源产生的原因，对干扰源快速定位，能够降低或解除干扰，提高现网性能，从而维护了运营商的利益。

Claims (20)

  1. 一种定位基站干扰的方法，包括：
    启动基站的天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录相应下倾角度下基站接收到的宽带接收功率和窄带接收功率的值；
    根据所述宽带接收功率和窄带接收功率的值随天线的下倾角度变化的关系，以及关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值是否发生变化来确定干扰来源。
  2. 如权利要求1所述的方法，其中：
    所述根据所述宽带接收功率和窄带接收功率的值随天线的下倾角度变化的关系，以及关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值是否发生变化来确定干扰来源，包括：
    判断所述宽带接收功率和窄带接收功率的值是否随天线的下倾角度变化而变化，如果不随天线的下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值均降低，且干扰信号消失，则确定干扰来源在基站内部；如果随天线的下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值均不发生变化，则确定干扰来源在基站外部。
  3. 如权利要求1所述的方法，其中：
    在所述启动基站的天线的倾角扫描功能之前，所述方法还包括：
    判断无线资源控制协议RRC用户的掉话率是否超过预设的掉话阈值，如果超过，则检测基站接收到的宽带接收功率和窄带接收功率的值，在满足任意一个预设条件时，启动所述基站的天线的下倾角扫描功能；所述预设条件为：
    所述窄带接收功率的值超过预设的窄带接收功率门限值；
    所述宽带接收功率的值超过预设的宽带接收功率门限值。
  4. 如权利要求2所述的方法，其中：
    在所述确定干扰来源在基站内部之后，所述方法还包括：
    计算在整个带宽内或有用信号带内的互调产物的互调频率；
    设置所述基站的下行频率为有用信号带内下行频段的上、下边界的频率，所述基站的发射功率为所述基站额定功率的一半，所述基站的上行频率为所述互调频率；
    当判断出所述宽带接收功率的值超过预设的宽带接收功率门限值，和/或所述窄带接收功率的值超过预设的窄带接收功率门限值时，则确定干扰来源为基站的天馈系统。
  5. 如权利要求4所述的方法，其中：
    所述计算在整个带宽内和有用信号带内的互调产物的互调频率，包括：
    计算互调频率f＝m*F1±n*F2，判断所述f是否落在有用信号带内上行频段或者整个带宽的频段内，如果落在所述有用信号带内上行频段或者整个带宽的频段内，则记录落入相应频段的频率为互调频率；
    其中，F1、F2为所述有用信号带内下行频段的上、下边界的频率，m、n的取值为0～7的整数，且m和n不能同时为0。
  6. 如权利要求2所述的方法，其中：
    所述确定干扰来源在基站外部之后，还包括：
    在判断出所述宽带接收功率和窄带接收功率的值随天线的下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值均不发生变化时，判断关闭基站下行发射通道时，干扰信号是否消失，如果消失，则确定所述基站外部的干扰来源为微型信号增强器；
    将记录的最大宽带接收功率的值和最大窄带接收功率的值对应的下倾角度作为所述基站外部的干扰来源的方位角。
  7. 如权利要求2或6所述的方法，其中：
    在所述确定干扰来源在基站外部之后，所述方法还包括：
    获取基站外部的干扰来源的发射功率以及所述基站接收到的宽带接收功 率的值；
    计算基站外部的干扰的空间衰减RL＝所述基站外部的干扰源的发射功率-所述基站接收到的宽带接收功率；
    根据信道传输模型公式求得所述基站外部干扰来源与所述基站之间的距离。
  8. 如权利要求2所述的方法，其中：
    在所述确定干扰来源在基站外部之后，所述方法还包括：
    关闭所述天线的下倾角扫描功能；
    将锁相环PLL的配置频率设置在有用信号带内上行频段内，在所述基站的整个带宽内扫描，并且记录所述基站接收到的宽带接收功率和窄带接收功率的值，将最大宽带接收功率的值和最大窄带接收功率的值对应的频率作为所述基站外部的干扰的频率；
    设置所述基站的上行频率为基站外部干扰的频率，同时再次启动所述天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录相应下倾角度下基站接收到的宽带接收功率和窄带接收功率的值，将记录的最大宽带接收功率的值和最大窄带接收功率的值对应的下倾角度作为所述基站外部的干扰来源的方位角。
  9. 如权利要求6或7或8所述的方法，其中：
    所述天线为智能天线，在所述将最大宽带接收功率的值和最大窄带接收功率的值对应的下倾角度作为所述基站外部的干扰来源的方位角之后，还包括：
    启动所述智能天线的水平面覆盖扇区的扫描功能，从-Y度扫描到+Y度，并记录所述智能天线的水平面每度的宽带接收功率和窄带接收功率的值，根据所述智能天线的水平面每度的最大宽带接收功率的值和最大窄带接收功率的值对应的角度确定所述基站外部的干扰来源的位置，Y为所述基站外部的干扰来源的方位角。
  10. 一种定位基站干扰的系统，包括：
    天线控制模块，其设置：启动基站的天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录相应下倾角度下基站接收到的宽带接收功率和窄带接收功率的值；以及
    干扰判决模块，其设置：根据所述宽带接收功率和窄带接收功率的值随天线的下倾角变化的关系，以及关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率的值是否发生变化来确定干扰来源。
  11. 如权利要求10所述的系统，其中：
    所述干扰判决模块，是设置为以如下方式根据所述宽带接收功率和窄带接收功率的值随天线的下倾角度变化的关系以及关闭基站下行发射通道后所述宽带接收功率和窄带接收功率的值是否发生变化来确定干扰来源：
    判断所述宽带接收功率和窄带接收功率的值是否随天线下倾角度变化，如果不随天线下倾角度变化，且关闭基站下行发射通道后所述宽带接收功率和窄带接收功率均降低，且干扰信号消失，则确定干扰来源在基站内部；如果随天线下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率均不发生变化，则确定干扰来源在基站外部。
  12. 如权利要求10所述的系统，还包括：
    接收功率检测模块，其设置为：在所述启动所述基站的天线的倾角扫描功能之前，判断无线资源控制协议RRC用户的掉话率是否超过预设的掉话阈值，如果超过，则检测基站接收到的宽带接收功率和窄带接收功率；
    所述天线控制模块，还设置为在满足以下任意一个预设条件时，启动所述基站的天线的倾角扫描功能：
    所述窄带接收功率值超过预设的窄带接收功率门限值；
    所述宽带接收功率超过预设的宽带接收功率门限值。
  13. 如权利要求11所述的系统，其中：
    所述干扰判决模块，还设置为在所述确定干扰来源在基站内部之后，计算落在整个带宽内和有用信号带内的互调产物的互调频率；
    设置所述基站的下行频率为有用信号带下行频段的两个上下边界频率，所述基站的发射功率大小为所述基站额定功率的一半，所述基站的上行频率为所述互调频率；
    重新判断所述基站接收到的所述宽带接收功率是否超过预设的宽带接收功率门限值，和/或所述窄带接收功率是否超过预设的窄带接收功率门限值，如果超过，则确定干扰来源为基站的天馈系统。
  14. 如权利要求13所述的系统，其中：
    所述干扰判决模块，还设置为以如下方式计算落在整个带宽内和有用信号带内的互调产物的互调频率
    计算频率f＝m*F1±n*F2，判断f是否落在有用信号带的上行频段或者整个带宽的频段内，如果落在所述有用信号带的上行频段或者整个带宽的频段内，则记录落入相应频段的频率为互调频率；
    其中，F1～F2为所述有用信号带的下行频段的上下边界频率，m、n的取值为0～7的整数，且m和n不能同时为0。
  15. 如权利要求11所述的系统，还包括：与所述干扰判决模块相连的干扰方位确定模块，其中：
    所述干扰判决模块，还设置为：在确定干扰源在基站外部之后，在判断出所述宽带接收功率和窄带接收功率的值随天线下倾角度变化，且关闭基站下行发射通道后，所述宽带接收功率和窄带接收功率均不发生变化时，判断关闭基站下行发射通道时，干扰信号是否消失，如果消失，则确定所述干扰来源为微型信号增强器；
    所述干扰方位确定模块，设置为：将记录的最大宽带接收功率值和最大窄带接收功率值对应的下倾角度作为所述基站外部的干扰来源的方位角。
  16. 如权利要求11或15所述的系统，其中：还包括：与所述干扰判决模块相连的干扰方位确定模块，设置为：获取基站外部的干扰来源的发射功率以及所述基站接收到的宽带接收功率；
    计算外部固定干扰的空间衰减RL＝所述基站外部的干扰来源的发射功率 -所述基站接收到的宽带接收功率；
    根据信道传输模型公式求得所述基站外部的干扰来源与所述基站之间的距离。
  17. 如权利要求11所述的系统，其中：还包括：与所述干扰判决模块相连的干扰方位确定模块，其中：
    所述干扰判决模块，还设置为在所述确定干扰来源在所述基站外部之后，向所述天线控制模块发送关闭所述天线的倾角扫描功能的指令；
    所述干扰方位确定模块，设置为将锁相环PLL的配置频率设置在有用信号带的上行频段内，在所述基站的整个带宽内扫描，并且记录所述基站接收到的宽带接收功率和窄带接收功率的值，将最大宽带接收功率值和最大窄带接收功率值对应的频率作为所述外部固定干扰的频率；设置所述基站的上行频率为外部固定干扰的频率，同时再次触发所述天线控制模块启动所述天线的下倾角扫描功能，将记录的最大宽带接收功率值和最大窄带接收功率值对应的下倾角度作为所述基站外部的干扰来源的方位角；
    所述天线控制模块，还设置为在接收到所述干扰判决模块指令后关闭所述天线的倾角扫描功能；在所述干扰方位确定模块的触发下再次启动基站的天线的下倾角扫描功能，调整所述天线的下倾角度进行扫描，并记录在相应下倾角度基站接收到的宽带接收功率和窄带接收功率的值。
  18. 如权利要求15或16或17所述的系统，其中：
    所述天线为智能天线，所述干扰方位确定模块，还设置为：在所述确定最大宽带接收功率值和最大窄带接收功率值对应的角度为所述外部固定干扰来源的方位角之后，启动所述智能天线水平面覆盖扇区的扫描，从-Y度扫描到+Y度，并记录所述智能天线水平面每度的宽带接收功率和窄带接收功率的值，根据所述智能天线水平面每度的最大宽带接收功率值和最大窄带接收功率值对应的角度确定所述基站外部的干扰来源的位置，Y为所述基站外部的干扰来源的方位角。
  19. 一种实现权利要求1-9任一项所述方法的计算机程序。
  20. 一种存储权利要求19所述计算机程序的计算机可读存储介质。
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