CN108075846B - Base station interference detection method and device - Google Patents
Base station interference detection method and device Download PDFInfo
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- CN108075846B CN108075846B CN201611020596.7A CN201611020596A CN108075846B CN 108075846 B CN108075846 B CN 108075846B CN 201611020596 A CN201611020596 A CN 201611020596A CN 108075846 B CN108075846 B CN 108075846B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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- 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
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a method and a device for detecting base station interference, which relate to the field of base stations and communication systems, and the method comprises the following steps: judging whether an interference event occurs or not by detecting the received signal strength of an uplink receiving channel of a base station; when the interference event is judged to occur, starting a self-checking mode of the base station; after a base station self-checking mode is started, under the condition of closing a base station transmitting channel, obtaining first received signal strength of an uplink receiving channel of the base station and second received signal strength of a part of receiving channels through detection; and determining whether the interference originates from the inside of the base station or from the outside of the base station according to the first received signal strength and the second received signal strength. The embodiment of the invention adds a base station self-checking mode on the basis of a general RRU architecture, and can judge whether the interference is outside or inside the base station by detecting the received signal strength of a receiving channel in the mode.
Description
Technical Field
The present invention relates to the field of base stations and communication systems, and in particular, to a method and an apparatus for detecting interference in a base station.
Background
As each large operator continuously expands the base station, a phenomenon of high background noise or high Received Signal Strength Indication (RSSI) frequently occurs in an external field, and it is necessary to determine whether the interference is external interference or internal interference.
When the positioning is external interference, a matched load is required to replace an antenna at an antenna port, and then whether the positioning is caused by the external interference or a channel problem of a Remote Radio Unit (RRU) per se is judged according to whether the background noise is normal or not.
The scheme can accurately judge whether the high RSSI phenomenon is the problem of the RRU or not, but has low operability in an external field.
Disclosure of Invention
According to the base station interference detection method and device provided by the embodiment of the invention, whether the reason causing the high RSSI is external interference or internal interference can be determined.
The method for detecting the interference of the base station provided by the embodiment of the invention comprises the following steps:
judging whether an interference event occurs or not by detecting the received signal strength of an uplink receiving channel of a base station;
when the interference event is judged to occur, starting a self-checking mode of the base station;
after a base station self-checking mode is started, under the condition of closing a base station transmitting channel, obtaining first received signal strength of an uplink receiving channel of the base station and second received signal strength of a part of receiving channels through detection;
and determining whether the interference originates from the inside of the base station or from the outside of the base station according to the first received signal strength and the second received signal strength.
Preferably, the determining whether the interference event occurs by detecting the received signal strength of the uplink receiving channel of the base station includes:
detecting a received signal of an uplink receiving channel of a base station in real time to obtain the intensity of the received signal;
and if the received signal strength of the uplink receiving channel of the base station obtained by the real-time detection is greater than an alarm threshold value, judging that an interference event occurs.
Preferably, the obtaining of the first received signal strength of the uplink receiving channel of the base station and the second received signal strength of the part of receiving channels by detecting includes:
detecting a first received signal strength of an uplink receiving channel of the base station, which comprises an antenna, a filter, a circulator and a receiving module, by controlling the channel conduction between the circulator and the receiving module of the base station;
detecting a second received signal strength of a portion of the receive channels including the receive module by controlling a channel disconnect between a circulator of the base station and the receive module.
Preferably, said determining that the interference originates from inside the base station or originates from outside the base station according to the first received signal strength and the second received signal strength comprises:
and if the difference between the first received signal strength and the second received signal strength is within a preset range, determining that the interference originates from the inside of the base station, otherwise, determining that the interference originates from the outside of the base station.
Preferably, the first and second received signal strengths are detected in the same time slot of the same frame, or the first and second received signal strengths are detected in the same time slot of different frames, respectively.
Preferably, in the TDD system, the base station transmit channel is turned off only during the receive timeslot.
According to the storage medium provided by the embodiment of the invention, the program for realizing the base station interference detection method is stored.
The base station interference detection device provided by the embodiment of the invention comprises:
the digital processing module is used for judging whether an interference event occurs or not by detecting the received signal strength of an uplink receiving channel of the base station, and starting a self-checking mode of the base station when the interference event is judged to occur;
the control module is used for closing the transmitting channel of the base station after the self-checking mode of the base station is started;
under the condition that the control module closes the transmitting channel of the base station, the digital module obtains first received signal strength of an uplink receiving channel of the base station and second received signal strength of a part of receiving channels through detection, and determines whether interference originates from the inside of the base station or originates from the outside of the base station according to the first received signal strength and the second received signal strength.
Preferably, the digital processing module detects the received signal of the uplink receiving channel of the base station in real time to obtain the received signal strength, and if the received signal strength of the uplink receiving channel of the base station obtained by the real-time detection is greater than an alarm threshold value, it is determined that an interference event has occurred.
Preferably, when the control module controls the channel between the circulator of the base station and the receiving module to be on, the digital processing module detects a first received signal strength of an uplink receiving channel of the base station including the antenna, the filter, the circulator and the receiving module, and when the control module controls the channel between the circulator of the base station and the receiving module to be off, the digital processing module detects a second received signal strength of a part of receiving channels including the receiving module.
Preferably, the digital processing module determines that the interference originates from inside the base station when the difference between the first received signal strength and the second received signal strength is within a preset range, and otherwise determines that the interference originates from outside the base station.
Preferably, the digital processing module detects the first received signal strength and the second received signal strength in the same time slot of the same frame, or detects the first received signal strength and the second received signal strength in the same time slot of different frames, respectively.
Preferably, when the device is applied to a TDD system, the device closes the transmitting channel of the base station only in the receiving time slot.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the embodiment of the invention adds a base station self-checking mode on the basis of a general RRU architecture, and under the mode, whether the interference originates from the outside or the inside of the base station can be determined by detecting the received signal strength of a receiving channel, namely, whether the RSSI is high due to the external interference or the channel problem of the RRU is determined, and the operability is high.
Drawings
Fig. 1 is a block diagram of a method for detecting interference of a base station according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a base station interference detection apparatus according to an embodiment of the present invention;
FIG. 3 is a flow chart of a self-test mode provided by an embodiment of the present invention;
FIG. 4 is a first timing diagram of a self-test mode according to an embodiment of the present invention;
fig. 5 is a second timing diagram of the self-test mode according to the embodiment of the invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described below are only for the purpose of illustrating and explaining the present invention, and are not to be construed as limiting the present invention.
Fig. 1 is a block diagram of a method for detecting interference of a base station according to an embodiment of the present invention, and as shown in fig. 1, the method includes the following steps:
step S101: whether an interference event occurs is judged by detecting the received signal strength of an uplink receiving channel of the base station.
Step S101 includes: detecting the received signal of the uplink receiving channel of the base station in real time to obtain the received signal strength, and if the received signal strength is greater than the alarm threshold value, judging that an interference event has occurred. Wherein the received signal comprises a spatial signal and an overall receiver noise signal.
Step S102: and when the interference event is judged to occur, starting a self-checking mode of the base station.
Step S103: after the self-checking mode of the base station is started, under the condition of closing the transmitting channel of the base station, the first received signal strength of the uplink receiving channel of the base station and the second received signal strength of part of receiving channels are obtained through detection.
Step S103 includes: in order to detect the received signal strength of the receiving channel, the transmitting channel of the base station needs to be closed during self-test of the base station. Then, by controlling the channel between the circulator of the base station and the receiving module to be switched on or off, the first received signal strength of the uplink receiving channel of the base station including the antenna, the filter, the circulator and the receiving module and the second received signal strength of the part of the receiving channels including the receiving module are respectively detected.
That is, the first received signal strength and the second received signal strength need to be detected in the receiving time slot, and therefore, the transmitting channel needs to be controlled to be powered down, and the receiving channel needs to be controlled to be powered up. During detection, detecting a first receiving signal of a complete base station uplink receiving channel by controlling the conduction of a path between a circulator and a receiving module to obtain a first receiving signal strength, wherein the first receiving signal comprises a space signal and a whole receiver noise signal; and detecting second receiving signals of part of receiving channels by controlling the disconnection of a path between the circulator and the receiving module to obtain the strength of the second receiving signals.
The first received signal strength and the second received signal strength may be detected in the same time slot of the same frame, or the first received signal strength and the second received signal strength may be detected in the same time slot of different frames.
It should be noted that, for the TDD system, the base station transmission channel may be closed only in the receiving time slot, and the first received signal strength and the second received signal strength are detected, while the base station transmission channel may be normally opened in the transmitting time slot for signaling.
Step S104: and determining whether the interference originates from the inside of the base station or from the outside of the base station according to the first received signal strength and the second received signal strength.
Step S104 includes: and if the difference between the first received signal strength and the second received signal strength is within a preset range, determining that the interference originates from the inside of the base station, otherwise, determining that the interference originates from the outside of the base station.
The embodiment of the invention is suitable for the interference detection of the base station RRU of the TDD system, and the purpose of judging the interference can be achieved by remotely configuring the RRU.
It will be understood by those skilled in the art that all or part of the steps in the method according to the above embodiments may be implemented by a program, which may be stored in a computer-readable storage medium, and includes steps S101 to S104 when the program is executed. The storage medium may be ROM/RAM, magnetic disk, optical disk, etc.
Fig. 2 is a schematic diagram of a base station interference detection apparatus according to an embodiment of the present invention, as shown in fig. 2, including: digital processing module, control module, transmitting module, receiving module, switch (i.e. the switch module shown in fig. 2), high-power load, circulator, filter and antenna. Wherein:
the digital processing module converts baseband data into analog signals and transmits the analog signals to the transmitting module, and after carrying out analog-to-digital conversion on the signals output by the receiving module and carrying out corresponding digital processing, the signals are transmitted to the baseband for processing.
The transmitting module performs up-conversion, amplification, filtering, and other processing on the signal, inputs the signal from the port 1 and outputs the signal from the port 2 of the circulator, and the signal is filtered by the filter module (i.e., the filter shown in fig. 2) and transmitted through the antenna.
The receiving module is used for amplifying, filtering, down-converting and the like the uplink signal and then sending the uplink signal to the digital processing module.
The input end of the switch module is 1 port, the output end is 2,3 ports, the 2 port is connected with the receiving module, and the 3 port is connected with a high-power matched load (namely, the high-power load shown in fig. 2). When the ports 1 and 2 of the switch module are turned on, a signal path (corresponding to the uplink receiving channel of the base station described in the embodiment of fig. 1) actually connecting the receiving module and the circulator, the filter and the antenna is actually connected, and the bottom noise or the received signal strength of the read receiving path is the sum of the spatial signal and the noise of the whole receiver (including the antenna, the filter, the circulator and the receiving module). When the ports 1 and 3 of the switch module are turned on, the actual receiving module and the circulator are turned off, and the read background noise or received signal strength of the receiving path at this time only contains the receiving module and the link noise after the receiving module.
The control module is used for controlling the power supply control of the receiving module and the transmitting module and the channel selection of the switch module.
After being received by an antenna, the uplink signal is filtered by a filter module, input from a port 2 and output from a port 3 of the circulator, input from a port 1 and output from a port 2 of the switch module, and enters a receiving module for processing.
In the normal operating mode, the control on the hardware is as follows: in a receiving time slot, 1) the transmitting module is powered off, the receiving module is powered on, and signals are received; 2) the 1 and 2 ports of the switch module are conductive. In a transmitting time slot, 1) a transmitting module is powered on, signals are sent, and a receiving module is powered off; 2) the 1 and 3 ports of the switch module are conductive.
In the normal operation mode, the signal processing procedure is as follows: when receiving time slot, the antenna receives electromagnetic wave in space, filters the electromagnetic wave through the filter, inputs the electromagnetic wave through the port 2 of the circulator, outputs the electromagnetic wave from the port 3 of the circulator, at the moment, the port 1 and the port 2 of the switch module of the access of the receiver are conducted, and the signal passes through the switch and then reaches the digital processing module through the receiving module to be processed. During transmitting time slot, signals are input from the port 1 of the circulator to the port 2 of the circulator through the digital processing module, the signals are output through the port 2 of the circulator after being filtered by the filter, the signals are radiated out through the antenna, at the moment, the port 1 and the port 3 of the access switch module of the receiver are conducted, and generally, only the fact that signals of a transmitting channel cannot flow back to a receiving channel to burn out a front-end device is considered under the state.
The embodiment of the invention adds a self-checking mode on the basis of a general RRU architecture, and can judge whether the interference is external or internal to the RRU by detecting the bottom noise of a receiving channel or the strength of a received signal.
In the self-checking mode, the digital processing module detects the received signal strength of the uplink receiving channel of the base station, if the received signal strength obtained by real-time detection is greater than an alarm threshold value, the occurrence of an interference event is judged, and the self-checking mode of the base station is started. And after the base station self-checking mode is started, the control module closes the base station transmitting channel. Under the condition that a transmitting channel of a base station is closed, the digital module obtains first received signal strength of an uplink receiving channel of the base station and second received signal strength of a part of receiving channels through detection, and determines whether interference originates from the inside of a base station RRU or from the outside of the base station according to the first received signal strength and the second received signal strength and specifically by judging whether the difference between the first received signal strength and the second received signal strength is within a preset range.
The first received signal strength and the second received signal strength may be detected in the same time slot of the same frame, or may be detected in the same time slot of different frames.
In the self-test mode, the control on the receive slot hardware is as follows: in a receiving time slot, 1) the transmitting module is powered off, the receiving module is powered on, and signals are received; 2) the ports 1 and 2 of the switch module are conducted, and the RSSI12 is read; 3) the ports 1 and 3 of the switch module are conducted, and the RSSI13 is read; 4) comparing the RSSI12 and the RSSI13, it is determined whether the interference is generated inside the receiver.
When the device is applied to a TDD system, the transmitting channel of the base station is closed only in the receiving time slot. It can be seen that when the present embodiment is applied to the TDD system, the self-checking mode does not involve the transmission timeslot.
In the self-test mode, the modules mainly involved include: the device comprises a control module, a detection module and a judgment module, wherein the functions of the detection module and the judgment module can be realized by a digital processing module. The functions of each module in the self-test mode include:
a control module: 1. controlling a receiving channel to be powered on; 2. controlling the switch module to conduct the ports 1 and 3; 3. controlling the switch module to conduct the ports 1 and 2;
a detection module: reading the signal strength (i.e. RSSI) of the receiving channel, including 1, and reading the RSSI13 (i.e. the first received signal strength of the uplink receiving channel of the base station) when the switch module turns on the ports 1 and 3; 2. reading the RSSI12 (i.e., the second received signal strength of the partial receive channel) when the switch module turns on ports 1 and 2;
a judging module: whether the interference is external or internal to the RRU is determined by the RSSI13 and RSSI12 values, if the RSSI12 is greater than the RSSI13 and the difference exceeds a predetermined range, the interference is external to the RRU, otherwise it is internal to the RRU.
Fig. 3 is a flowchart of a self-test mode according to an embodiment of the present invention, and as shown in fig. 3, the steps include:
step S201: and the receiving channel has high bottom noise and enters a self-checking mode of a certain bottom noise high receiving time slot.
And when the RSSI of the receiving channel is greater than the alarm threshold value Ta, the receiving channel is high in bottom noise and needs to enter a self-checking mode of the base station. For example, if the RSSI of the receiving channel is-70 dBm and the alarm threshold value Ta is-80 dBm, the bottom noise of the receiving channel is considered to be high.
Step S202: the control module controls the receiving channel to be electrified and controls the switch module to conduct the ports 1 and 3.
Step S203: the detection module reads the received signal strength of the receive channel, which is denoted as RSSI 13.
Step S204: the control module controls the receiving channel to be electrified and controls the switch module to conduct the ports 1 and 2.
Step S205: the detection module reads the received signal strength of the receive channel and records it as RSSI12
Step S206: the determining module determines whether the difference between the RSSI12 and the RSSI13 is outside the preset range [0, Tb ], that is, whether the difference between the RSSI12 and the RSSI13 is greater than a preset difference threshold Tb, if yes, step S207 is executed, otherwise step S208 is executed.
Step S207: the judgment module determines that the interference comes from the outside of the RRU.
Step S208: the judging module determines that the interference comes from the inside of the RRU.
Fig. 4 is a first timing diagram of the self-test mode according to the embodiment of the invention, and as shown in fig. 4, the RSSI12 and the RSSI13 are read in the same time slot of different frames.
Application embodiment 1
When a background of a base station finds that the RSSI is higher and interference is suspected, the base station can enter a self-checking mode, on the basis of not changing basic configuration of the base station, a certain time SLOT (SLOT) with high RSSI is found, RSSI13 when ports of switch modules 1 and 3 are conducted and RSSI12 when ports of switch modules 1 and 2 are conducted are respectively read in the same time SLOT of different frames, whether RSSI12 is higher than RSSI13 by a preset difference threshold Tb or not is compared, if yes, the reason that the RSSI is higher is outside the base station can be judged, and otherwise, the reason that the RSSI is higher is inside a channel of the base station is explained.
Application example two
When a background of a base station finds that the RSSI is high and interference is suspected, the base station can enter a self-checking mode, a certain uplink time SLOT (SLOT) is configured to be used in the self-checking mode through background configuration and fixation, the RSSI13 when ports of switch modules 1 and 3 are conducted and the RSSI12 when ports of switch modules 1 and 2 are conducted are respectively read in the same time SLOT of different frames, whether the RSSI12 is higher than the RSSI13 by a preset difference threshold Tb or not is compared, and if yes, the reason that the RSSI is high can be judged to be outside the base station; otherwise, the reason that the RSSI is higher is shown to be in the base station channel.
This allows the time slot by time slot scanning of the interference to determine which time slots the interference is present in.
Fig. 5 is a second timing chart of the self-test mode according to the embodiment of the invention, as shown in fig. 5, the RSSI12 and the RSSI13 are read in the same time slot of the same frame.
Application example three
When a background of a base station finds that the RSSI is higher and interference is suspected, the base station can enter a self-checking mode, on the basis of not changing basic configuration of the base station, a time SLOT (SLOT) with high RSSI is found, RSSI13 when ports of switch modules 1 and 3 are conducted and RSSI12 when ports of switch modules 1 and 2 are conducted are respectively read in the same time SLOT of the same frame, whether RSSI12 is higher than RSSI13 by a preset difference threshold Tb or not is compared, if yes, the reason that the RSSI is higher is outside the base station can be judged, and otherwise, the reason that the RSSI is higher is inside a channel of the base station is explained.
Application example four
When a background of a base station finds that the RSSI is higher and interference is suspected, the base station can enter a self-checking mode, a certain uplink time SLOT (SLOT) is configured and fixed to be a self-checking mode through the background, the RSSI13 when ports of switch modules 1 and 3 are conducted and the RSSI12 when ports of switch modules 1 and 2 are conducted are respectively read in the same time SLOT of the same frame, whether the RSSI12 is higher than the RSSI13 by a preset difference threshold Tb or not is compared, and if yes, the reason that the RSSI is higher is judged to be outside the base station; otherwise, the reason that the RSSI is higher is shown to be in the base station channel.
This allows the time slot by time slot scanning of the interference to determine which time slots the interference is present in.
For the RRU of LTE system, taking 20MHz bandwidth as an example, the RSSI is-98 dBm level when there is no interference, and if the RSSI is high, the threshold value is over-80 dBm. If the RSSI boost of-80 dBm is due to an RRU external signal, then RSSI 12-80 dBm and RSSI 13-98 dBm in self-test mode. If RSSI12 is-80 dBm and RSSI13 is also at-80 dBm level, then the cause of the bias is inside the base station channel. For larger external interference signals, for example-40 dBm, then RSSI 12-40 dBm and RSSI 13-85 dBm (45 dB isolation of the antenna port from switch module port 3) in self-test mode. RSSI12 is comparable to RSSI13 if for internal reasons.
In summary, the embodiments of the present invention have the following technical effects:
the embodiment of the invention can replace the method for adding the matching load at the antenna port when the RSSI is positioned at a high fault, can be operated remotely through a background, does not need workers to get on the station, and greatly saves manpower and material resources.
Although the present invention has been described in detail hereinabove, the present invention is not limited thereto, and various modifications can be made by those skilled in the art in light of the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.
Claims (10)
1. A base station interference detection method comprises the following steps:
judging whether an interference event occurs or not by detecting the received signal strength of an uplink receiving channel of a base station;
when the interference event is judged to occur, starting a self-checking mode of the base station;
after a base station self-checking mode is started, under the condition that a base station transmitting channel is closed, detecting first received signal strength of a base station uplink receiving channel comprising an antenna, a filter, a circulator and a receiving module by controlling channel conduction between the circulator of the base station and the receiving module, and detecting second received signal strength of a part of receiving channels comprising the receiving module by controlling channel disconnection between the circulator of the base station and the receiving module, wherein the second received signal strength of the part of receiving channels does not comprise a space signal and noise signal strength of the receiving channel between the circulator and the antenna;
and determining whether the interference originates from the inside of the base station or from the outside of the base station according to the first received signal strength and the second received signal strength.
2. The method of claim 1, wherein the determining whether the interference event occurs by detecting the received signal strength of the uplink receiving channel of the base station comprises:
detecting a received signal of an uplink receiving channel of a base station in real time to obtain the intensity of the received signal;
and if the received signal strength of the uplink receiving channel of the base station obtained by the real-time detection is greater than an alarm threshold value, judging that an interference event occurs.
3. The method of claim 1, wherein determining whether interference originates from within a base station or originates from outside a base station based on the first and second received signal strengths comprises:
and if the difference between the first received signal strength and the second received signal strength is within a preset range, determining that the interference originates from the inside of the base station, otherwise, determining that the interference originates from the outside of the base station.
4. The method according to any of claims 1-3, wherein the first and second received signal strengths are detected in the same time slot of the same frame, or the first and second received signal strengths are detected separately in the same time slot of different frames.
5. The method of claim 4, wherein the base station transmit channel is turned off only during a receive timeslot in a TDD system.
6. A base station interference detection apparatus, comprising:
the digital processing module is used for judging whether an interference event occurs or not by detecting the received signal strength of an uplink receiving channel of the base station, and starting a self-checking mode of the base station when the interference event is judged to occur;
the control module is used for closing the transmitting channel of the base station after the self-checking mode of the base station is started;
under the condition that the control module closes a transmitting channel of the base station, the digital processing module detects first received signal strength of an uplink receiving channel of the base station, which comprises an antenna, a filter, a circulator and a receiving module, by controlling the channel conduction between the circulator and the receiving module of the base station, detects second received signal strength of a part of receiving channels comprising the receiving module by controlling the channel disconnection between the circulator and the receiving module of the base station, and determines whether interference originates from the inside of the base station or originates from the outside of the base station according to the first received signal strength and the second received signal strength; wherein the second received signal strength of the partial receiving channel is the noise signal strength of the receiving channel between the circulator and the antenna without including the spatial signal.
7. The apparatus of claim 6, wherein the digital processing module detects the received signal of the uplink receiving channel of the base station in real time to obtain the received signal strength, and determines that an interference event has occurred if the received signal strength of the uplink receiving channel of the base station obtained by the real-time detection is greater than an alarm threshold.
8. The apparatus of claim 6, the digital processing module determines that interference originates from inside the base station when a difference between the first and second received signal strengths is within a predetermined range, and otherwise determines that interference originates from outside the base station.
9. The apparatus of any of claims 6-8, wherein the digital processing module detects the first and second received signal strengths at the same time slot of the same frame, or detects the first and second received signal strengths at the same time slot of different frames, respectively.
10. The apparatus of claim 9, when applied in a TDD system, the apparatus turns off a base station transmit channel only in a receive timeslot.
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| CN201611020596.7A CN108075846B (en) | 2016-11-17 | 2016-11-17 | Base station interference detection method and device |
| PCT/CN2017/108164 WO2018090814A1 (en) | 2016-11-17 | 2017-10-28 | Base station interference detection method and apparatus |
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| CN201611020596.7A CN108075846B (en) | 2016-11-17 | 2016-11-17 | Base station interference detection method and device |
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| CN109444835A (en) * | 2018-11-16 | 2019-03-08 | 北京遥感设备研究所 | A kind of receiving channel self checking method and system based on standing wave reflection |
| CN112153695B (en) * | 2020-08-20 | 2023-05-12 | 惠州拓邦电气技术有限公司 | Base station anti-interference method, device and system |
| CN114125913B (en) * | 2021-11-08 | 2023-12-08 | 中信科移动通信技术股份有限公司 | Distributed pico-base station interference positioning method and system |
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| CN108075846A (en) | 2018-05-25 |
| WO2018090814A1 (en) | 2018-05-24 |
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