CN116980932A - Base station and communication method thereof - Google Patents

Abstract

The application discloses a base station and a communication method thereof. The transmitting link is connected with the receiving and transmitting port; the second receiving link comprises a first sub receiving link and a second sub receiving link, and the first sub receiving link is connected with the receiving-transmitting port; the selection circuit is respectively connected with the receiving and transmitting port, the first receiving link and the second sub receiving link; the control circuit is connected with the selection circuit and the second sub-receiving link, and is used for controlling the selection circuit to selectively connect the first receiving link or the second sub-receiving link with the receiving-transmitting port based on the working state of the base station, and determining whether co-channel interference exists between the base station and the adjacent base station based on the frequency signals of the adjacent base station when the selection circuit connects the second sub-receiving link with the receiving-transmitting port. Through the mode, the method and the device can realize detection of the same-frequency interference of the base station.

Description

Base station and communication method thereof

Technical Field

The present application relates to the field of communications technologies, and in particular, to a base station and a communication method thereof.

Background

Co-channel interference is interference that is caused by a base station that has the same frequency of the unwanted signal as the wanted signal and that is the same frequency as the wanted signal. For example, in the existing emergency communication application scenario, according to the general technical plan of the emergency command wireless communication network, the base stations include emergency portable mobile base stations, the working frequencies of the mobile base stations are the same, the situation that a plurality of mobile base stations are located at the same address may occur when the mobile base stations are used in a large emergency rescue place, the frequencies of the adjacent mobile base stations are the same to generate the same-frequency interference, and the problem that normal communication cannot be performed occurs.

Disclosure of Invention

The application provides a base station and a communication method thereof, which can realize detection of same-frequency interference.

In order to solve the technical problems, the application adopts a technical scheme that: there is provided a base station including: a transmit-receive port; the transmitting link is connected with the receiving and transmitting port and is used for transmitting the first frequency signal; a first receiving link for receiving a second frequency signal; the second receiving link comprises a first sub receiving link and a second sub receiving link, and the first sub receiving link is connected with the receiving and transmitting port and is used for receiving the third frequency signal; the second sub-receiving link is used for receiving the frequency signals of the adjacent base stations; the selection circuit is respectively connected with the receiving and transmitting port, the first receiving link and the second sub receiving link and is used for selectively connecting the first receiving link or the second sub receiving link with the receiving and transmitting port; and the control circuit is connected with the selection circuit and the second sub-receiving link and is used for controlling the selection circuit to selectively connect the first receiving link or the second sub-receiving link with the receiving-transmitting port based on the working state of the base station, and determining whether co-channel interference exists between the base station and the adjacent base station based on the frequency signals of the adjacent base station when the selection circuit connects the second sub-receiving link with the receiving-transmitting port.

The control circuit controls the selection circuit to connect the second sub-receiving link with the receiving and transmitting port when the base station is in any working state of a power-on state, an idle state and a non-important service state.

Wherein, the receiving and dispatching port includes: the duplexer is connected with the transmitting channel and is used for transmitting the first frequency signal; the inverse multiplexer is arranged on the transmitting link, the first end of the inverse multiplexer is connected with the transmitting link, the second end of the inverse multiplexer is connected with the selection circuit, the third end of the inverse multiplexer is connected with the duplexer, and the inverse multiplexer is used for acquiring the second frequency signal and the frequency signal of the adjacent base station from the transmitting channel.

Wherein the selection circuit includes: the control end of the switch is connected with the second end of the inverse multiplexer and the control circuit, the first selection end of the switch is connected with the first receiving link, the second selection end of the switch is connected with the second sub receiving link, and the switch is used for selectively connecting the first receiving link or the second sub receiving link with the receiving-transmitting port under the control of the control circuit.

Wherein the first receiving link includes: the power detection link is coupled and connected with the first end and the second end of the inverse multiplexer; the voltage dividing circuit is connected with the first selection end of the switch.

Wherein the second frequency signal comprises the first frequency signal and a frequency signal reflected by the transmitting link, and the power detection link comprises: the transmitting power detection link is coupled and connected with the transmitting link and is used for detecting the power of the first frequency signal; and the reflected power detection link is coupled with the second end of the inverse multiplexer and is used for detecting the power of the frequency signal reflected by the transmitting link.

Wherein the voltage dividing circuit includes: and one end of the resistor is grounded, and the other end of the resistor is connected with the first selection end of the switch.

In order to solve the technical problems, the application adopts another technical scheme that: there is provided a communication method for the base station of any one of the above, the communication method comprising: acquiring the working state of a base station; selectively connecting the first receiving link or the second sub receiving link with the transmitting-receiving port based on the operating state control selection circuit; when the selection circuit connects the second sub-receiving link with the transmitting-receiving port, it is determined whether co-channel interference exists between the base station and other base stations based on the frequency signals of the neighboring base stations received by the second sub-receiving link.

Wherein determining whether co-channel interference exists between the base station and the neighboring base station based on the frequency signal of the neighboring base station received by the second sub-receiving link comprises: demodulating the frequency signals of the adjacent base stations to obtain the transmitting frequencies of the adjacent base stations; if the transmitting frequency is the same as the frequency of the first frequency signal, the same-frequency interference between the base station and the adjacent base station is determined.

The working states of the base station comprise a power-on state, an idle state, a non-important service state and a service state, the first receiving link or the second sub receiving link is selectively connected with a receiving-transmitting port based on a working state control selection circuit, and the method comprises the following steps: when the base station is in a service state, the control selection circuit connects the first receiving link with the receiving-transmitting port; and when the base station is in any working state of a power-on state, an idle state and a non-important service state, the control selection circuit is used for connecting the second sub-receiving link with the receiving-transmitting port.

Wherein when the base station is in any working state of a power-on state, an idle state and a non-important service state, the control selection circuit connects the second sub-receiving link with the receiving-transmitting port, and the method comprises the following steps: when the base station is in a power-on state, the control selection circuit connects the second sub-receiving link with the receiving-transmitting port; when the base station is in an idle state or a non-important service state, the selection circuit is controlled to connect the second sub-receiving link with the receiving-transmitting port at preset time intervals, and the transmitting link is controlled to be closed.

Wherein the communication method further comprises: when the same-frequency interference exists between the base station and the adjacent base station, acquiring a level value of a frequency signal of the adjacent base station; and when the level value is higher than the preset level value, controlling the transmission link to switch the frequency of the first frequency signal to other preset frequencies.

Compared with the prior art, the application has the beneficial effects that: the base station comprises a receiving and transmitting port, a transmitting link, a first receiving link, a second receiving link, a selecting circuit and a control circuit. The transmitting link is connected with the receiving and transmitting port and is used for transmitting a first frequency signal; a first receiving link for receiving a second frequency signal; the second receiving link comprises a first sub receiving link and a second sub receiving link, and the first sub receiving link is connected with the receiving and transmitting port and is used for receiving the third frequency signal; the second sub-receiving link is used for receiving the frequency signals of the adjacent base stations; the selection circuit is respectively connected with the receiving and transmitting port, the first receiving link and the second sub receiving link and is used for selectively connecting the first receiving link or the second sub receiving link with the receiving and transmitting port; and the control circuit is connected with the selection circuit and the second sub-receiving link and is used for controlling the selection circuit to selectively connect the first receiving link or the second sub-receiving link with the receiving-transmitting port based on the working state of the base station, and determining whether co-channel interference exists between the base station and the adjacent base station based on the frequency signals of the adjacent base station when the selection circuit connects the second sub-receiving link with the receiving-transmitting port. Through the mode, the first receiving link or the second sub receiving link is selectively connected with the receiving and transmitting port by the selection circuit, and the selection circuit is controlled by the control circuit based on the working state of the base station.

Drawings

For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic diagram of a base station according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of another embodiment of a base station according to the present application;

fig. 3 is a schematic structural diagram of a base station according to another embodiment of the present application;

fig. 4 is a schematic structural diagram of a base station according to another embodiment of the present application;

FIG. 5 is a flow chart of an embodiment of a communication method of the present application;

FIG. 6 is a flowchart illustrating the step S53 in the embodiment of FIG. 5;

FIG. 7 is a schematic diagram of an embodiment of an electronic device of the present application;

fig. 8 is a schematic structural view of an embodiment of the computer storage medium of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In order to solve the above-mentioned technical problems, the present application first proposes a base station, as shown in fig. 1, fig. 1 is a schematic structural diagram of an embodiment of the base station of the present application, where the base station of the present embodiment includes a transceiver port 10, a transmitting link 20, a first receiving link 30, a second receiving link 40, a selecting circuit 50 and a control circuit 60. The transmitting link 20 is connected with the receiving and transmitting port 10 and is used for transmitting a first frequency signal; the first receiving link 30 is configured to receive the second frequency signal; the second receiving link 40 includes a first sub-receiving link 401 and a second sub-receiving link 402, where the first sub-receiving link 401 is connected to the transceiver port 10 and is used to receive the third frequency signal; the second sub-receiving link 402 is configured to receive frequency signals of neighboring base stations; the selection circuit 50 is respectively connected to the transceiver port 10, the first receiving link 30 and the second sub-receiving link 402, and is configured to selectively connect the first receiving link 30 or the second sub-receiving link 402 to the transceiver port 10; the control circuit 60 is connected to the selection circuit 50 and the second sub-receiving link 402, and is configured to control the selection circuit 50 to selectively connect the first receiving link 30 or the second sub-receiving link 402 to the transceiver port 10 based on the operation state of the base station, and determine whether co-channel interference exists between the base station and the neighboring base station based on the frequency signal of the neighboring base station when the selection circuit 50 connects the second sub-receiving link 402 to the transceiver port 10.

In the above manner, the present application selectively connects the first receiving link 30 or the second sub receiving link 402 with the transceiving port 10 by using the selection circuit 50, and controls the selection circuit 50 by using the control circuit 60 based on the operation state of the base station, when the selection circuit 50 selects the second sub receiving link 402 to connect with the transceiving port 10, the control circuit 60 can determine whether co-channel interference exists between the uplink and downlink signals of the base station and the adjacent base station based on the uplink and downlink frequency signals of the base station and the frequency signals of the adjacent base station, so the present application can realize the detection of the co-channel interference of the base station.

Optionally, the control circuit 60 controls the selection circuit 50 to connect the second sub-receiving link 402 with the transceiver port 10 when the base station is in any one of a power-on state, an idle state, and a non-important traffic state.

The communication mode of the base station is frequency division duplex (Frequency Division Duplexing, FDD), and the base station continuously and simultaneously receives and transmits signals during normal operation, and when detecting other adjacent base stations, the base station needs to close the transmission of the transmission link 20 of the base station so as to reduce the design cost of the receiver in the base station. The frequency detection of other adjacent base stations can be performed when the base station is powered on, i.e. in a powered-on state. After the base station normally works, only the base station works under idle or non-important service, that is, when the base station is in idle state and in non-important service state, a non-fixed time operation mode is adopted, the transmission of the transmission link 20 of the base station is turned off briefly (for example, less than 1 s), and the second sub-receiving link 402 is selected by the selection circuit 50 to be connected with the receiving-transmitting port 10 to detect the frequency of other adjacent base stations, so that the influence on the service of the base station can be reduced.

Optionally, as shown in fig. 1, the base station further comprises an antenna 70. The antenna 70 is connected to the transmitting/receiving port 10 and is used for transmitting/receiving signals.

The antenna 70 may be reasonably selected according to the actual situations such as coverage requirements of the base station network, traffic distribution, anti-interference requirements, and network service quality. The antenna 70 includes a transmitting antenna and a receiving antenna. The transmitting antenna converts the electric signal transmitted by the base station into an electromagnetic wave signal capable of being propagated in the air and transmits the electromagnetic wave signal. The receiving antenna receives electromagnetic wave signals and converts the electromagnetic wave signals into electric signals which can be decoded by the base station. The antenna 70 is capable of converting an electric signal of a base station into an electromagnetic wave signal and transmitting the electromagnetic wave signal to other base stations or terminals, and is also capable of receiving the electromagnetic wave signal transmitted from other base stations or terminals to the base station, converting the electromagnetic wave signal into an electric signal, transmitting the electric signal into the base station, and decoding the electric signal to obtain information of other base stations or terminals.

Alternatively, as shown in fig. 2, fig. 2 is a schematic structural diagram of another embodiment of the base station of the present application. The transceiver port 10 includes a duplexer 101 and an inverse multiplexer 102. The transmitting channel of the duplexer 101 is connected to the transmitting link 20, and is used for transmitting the first frequency signal; the inverse multiplexer 102 is disposed on the transmitting link 20, a first end of the inverse multiplexer 102 is connected to the transmitting link 20, a second end of the inverse multiplexer 102 is connected to the selection circuit 50, a third end of the inverse multiplexer 102 is connected to the duplexer 101, and the inverse multiplexer 102 is configured to obtain the second frequency signal and the frequency signal of the neighboring base station from the transmitting channel of the duplexer 101.

The duplexer 101 includes a transmitting channel and a receiving channel, where the transmitting channel can transmit a first frequency signal, and the transmitting channel is isolated from the receiving channel, so that the transmitting state and the receiving state can be isolated, and the receiving state and the transmitting state of the base station can both work normally. The downlink signal is a signal transmitted by a base station, the uplink signal is a signal received by the base station, the working frequencies of the uplink signal and the downlink signal of the base station differ by 10M, a receiving channel is affected by a duplexer 101, signals transmitted by other base stations cannot be normally received, if signals transmitted by other base stations are to be detected, the front end of a transmitting link 20 needs to be inversely multiplexed, and an inverse multiplexer 102 is added and arranged on the transmitting link 20, so that when a first receiving link 30 and a second receiving link 40 are selectively connected with the transmitting link 20, the frequency signals of a second frequency signal and the frequency signals of adjacent base stations can be respectively received, and whether the same-frequency interference exists between the base station and the adjacent other base stations is determined.

The first sub-receiving link 401 is connected to the duplexer 101, and a receiving channel of the duplexer 101 can receive the third frequency signal and transmit the third frequency signal to the first sub-receiving link 401, and the second sub-receiving link 402 detects whether the frequency signal of the neighboring base station is the same as the first frequency signal transmitted by the base station, so as to determine whether co-channel interference exists between the base station and the neighboring base station.

Optionally, the selection circuit 50 comprises a switch. The control terminal of the switch is connected to the second terminal of the inverse multiplexer 102 and the control circuit 60, the first selection terminal of the switch is connected to the first receiving link 30, the second selection terminal of the switch is connected to the second sub-receiving link 402, and the switch is used to selectively connect the first receiving link 30 or the second sub-receiving link 402 to the transceiving port 10 under the control of the control circuit 60.

The switch can be a radio frequency switch, and the radio frequency switch can communicate any one or more paths of multi-path radio frequency signals of the base station through control logic so as to realize switching of different signal paths, including switching between receiving and transmitting, switching between different frequency bands and the like. When the base station is in any working state of a power-on state, an idle state and a non-important service state, the switch selects to connect the second sub-receiving link 402 with the receiving-transmitting port 10 so as to enable the second sub-receiving link 402 to be conducted with the receiving-transmitting port 10, and whether the same-frequency interference exists between the base station and other base stations or not is detected; when the base station transmits and receives signals normally, the switch selectively connects the first receiving link 30 with the transmitting and receiving port 10, so that the first receiving link 30 is conducted with the transmitting and receiving port 10.

Optionally, as shown in fig. 3, the first receiving link 30 includes a power detecting link 301 and a voltage dividing circuit 302. The power detection link 301 is coupled to the first and second ends of the inverse multiplexer 102; the voltage divider circuit 302 is connected to a first select terminal of the switch.

Optionally, the second frequency signal includes a coupled frequency signal of the first frequency signal and a frequency signal reflected by the transmitting link 20, and the power detection link includes a transmitting power detection link and a reflected power detection link. The transmitting power detection link is coupled to the transmitting link 20 and is configured to detect a coupled frequency signal of the first frequency signal to detect a power of the first frequency signal; the reflected power detection link is coupled to a second end of the inverse multiplexer 102 for detecting the power of the frequency signal reflected by the transmit link 20.

Optionally, the voltage divider circuit 302 includes a resistor. One end of the resistor is grounded, and the other end of the resistor is connected with the first selection end of the switch.

The transmitting power detection link and the reflected power detection link synchronously process the second frequency signal.

In an application scenario, as shown in fig. 3, the base station in this embodiment includes a transmitting link 20, a first receiving link 30, a second receiving link 40, a duplexer 101, an inverse multiplexer 102, a selection circuit 50, and an antenna 70. The first receiving link 30 includes a power detection link 301 and a voltage division circuit 302, and the power detection link 301 includes a transmission power detection link and a reflected power detection link. The second receiving link 40 includes a first sub-receiving link 401 and a second sub-receiving link 402.

The transmitting chain 20 includes a Digital-to-Analog Converter (DAC), a mixer, an Amplifier, an adjustable attenuator, a Power Amplifier (PA), and the like; the duplexer 101 includes a transmit channel TX and a receive channel RX; the first receiving link 30 includes RX0 and RX1 in an Analog-to-Digital Converter (ADC), a mixer, an adjustable attenuator, a resistor R, and the like, one end of the resistor R is connected to the selection circuit 50, and the other end of the resistor R is grounded. The second receive chain 40 includes RX2 and RX3 in the ADC, variable gain amplifiers (Variable Gain Amplifier, VGA), mixers, filters, adjustable attenuators, amplifiers, and the like. Wherein the first sub-receiving link 401 comprises RX3, VGA, mixer, filter, adjustable attenuator, amplifier, etc., and the second sub-receiving link 402 comprises RX2, VGA, mixer, filter, adjustable attenuator, amplifier, etc. The filter may be a tunable filter or an acoustic surface filter.

The DAC converts the digital signal transmitted by the base station into an analog signal in the form of current, voltage or charge. The ADC converts the continuous signal in analog form received by the base station into a discrete signal in digital form. The PA is the main part of the transmitting chain 20, in the transmitting chain 20, the power of the radio frequency signal generated by the DAC is very small, and after a series of amplification (buffer stage, intermediate amplification stage, final power amplification stage) is needed to obtain enough radio frequency power, the radio frequency signal can be fed to the antenna 70 to radiate, and the PA is set in the transmitting chain 20 to obtain enough radio frequency output power so that the base station can normally transmit the signal. VGA can provide excellent performance for receiving links that require a high dynamic range. The mixer is used for mixing local oscillation signals (LO-TX 0, LO-FB and LO-RX) with radio frequency signals to obtain intermediate frequency signals. The transmitting power detection link is used for detecting the power of the first frequency signal and realizing the transmitting power detection of the base station. The reflected power detection link is used to detect the power of the frequency signal reflected by the transmitting link 20, so as to implement reflected power detection of the base station.

If the signal power transmitted by the base station is 20W, the standing wave of the antenna 70 is 2.0, the reflected signal power at one end of the selection circuit 50 is about 33dBm, the receiving sensitivity is-120 dBm, and the receiving dynamic range exceeds 150dB. A strong signal level can be received and the dynamic range of signal reception is large.

Referring to fig. 4, in another implementation of the present embodiment, the communication mode of the base station is time division duplex (Time Division Duplexing, TDD), and the base station in this embodiment is different from the foregoing base station in that the first sub-receiving link 401 is not directly connected to the transmitting/receiving port 10, but is connected to the selection circuit 50, the transmitting/receiving port 10 includes a filter 103 and an inverse multiplexer 102, and the inverse multiplexer 102 is connected to the antenna 70 through the filter 103.

The selection circuit 50 includes a switch. The control terminal of the switch is connected to the second terminal of the inverse multiplexer 102, the control circuit 60, the first selection terminal of the switch is connected to the first receiving link 30, the second selection terminal of the switch is connected to the second sub-receiving link 402, and the third selection terminal of the switch is connected to the first sub-receiving link 401. The switch is used to selectively connect the first receiving link 30, the first sub receiving link 401, and the second sub receiving link 402 with the transceiving port 10 under the control of the control circuit 60.

The switch can be a radio frequency switch, and the radio frequency switch can communicate any one or more paths of multi-path radio frequency signals of the base station through control logic so as to realize switching of different signal paths, including switching between receiving and transmitting, switching between different frequency bands and the like. When the base station is in any working state of a power-on state, an idle state and a non-important service state, the switch selects to connect the second sub-receiving link 402 with the receiving-transmitting port 10 so as to enable the second sub-receiving link 402 to be conducted with the receiving-transmitting port 10, and whether the same-frequency interference exists between the base station and other base stations or not is detected; when the base station normally transmits signals, the switch selectively connects the first receiving link 30 with the transceiving port 10, so that the first receiving link 30 is conducted with the transceiving port 10. When the base station normally receives signals, the switch selectively connects the first sub-receiving link 401 with the transceiving port 10, so that the first sub-receiving link 401 is conducted with the transceiving port 10.

In other embodiments, the first sub-receiving link 401 may also be connected to the duplexer 101 through a control switch (not shown), when the base station needs to transmit signals, the duplexer 101 is connected to the transmitting link 20, and when the base station needs to receive signals, the duplexer 101 is connected to the first sub-receiving link 401 through the control switch, and of course, two implementations of TDD communication modes are shown here only as examples, but not limited thereto, and other implementations of communication modes capable of implementing TDD may also be used as implementations of the present embodiment, which are not repeated herein.

The principle of detecting the frequency signals of other adjacent base stations in this embodiment is the same as that of the foregoing embodiment, and will not be described here again.

The base station of the embodiment can detect the frequency signals of other adjacent base stations and avoid the same-frequency interference between the base station and other base stations.

In order to solve the above technical problems, the present application further provides a communication method, as shown in fig. 5, and fig. 5 is a flow chart of an embodiment of the communication method of the present application. The communication method of the present embodiment includes the steps of:

step S51: and acquiring the working state of the base station.

The working state of the base station can be any working state of the base station in a service state, a power-on state, an idle state and a non-important service state. When the base station is in a service state, the base station can normally transmit and receive signals, when the base station is in any one of a power-on state, an idle state and a non-important service state, the function of transmitting signals of the base station can be closed, the frequency signals of the adjacent base station are received through the second sub-receiving link, and whether the same-frequency interference exists between the base station and the adjacent base station can be determined through the frequency signals of the adjacent base station.

Step S52: the selection circuit is controlled to selectively connect the first receiving link or the second sub-receiving link with the transceiving port based on the operating state.

When the control circuit is used for controlling the selection circuit to selectively connect the first receiving link with the receiving and transmitting port, the base station can normally receive and transmit signals. When the second sub-receiving link is connected with the receiving and transmitting port, the function of transmitting signals of the base station is closed, the frequency signals of the adjacent base stations are received through the second sub-receiving link, and whether the same-frequency interference exists between the base stations and the adjacent base stations can be determined through the frequency signals of the adjacent base stations.

Optionally, the operating state of the base station includes a power-on state, an idle state, a non-important traffic state, and a traffic state. When the base station is in a service state, the control selection circuit connects the first receiving link with the receiving-transmitting port; and when the base station is in any working state of a power-on state, an idle state and a non-important service state, the control selection circuit is used for connecting the second sub-receiving link with the receiving-transmitting port.

When the base station is in service state, the first receiving link receives the second frequency signal, and the base station can send and receive signals normally. When the base station is in any working state of a power-on state, an idle state and a non-important service state, the transmitting signal function of the base station can be closed, the frequency signals of the adjacent base stations are received through the second sub-receiving link, and whether the same-frequency interference exists between the base stations and the adjacent base stations can be determined through the frequency signals of the adjacent base stations.

Optionally, when the base station is in a power-on state, the control selection circuit connects the second sub-receiving link with the transceiving port; when the base station is in an idle state or a non-important service state, the selection circuit is controlled to connect the second sub-receiving link with the receiving-transmitting port at preset time intervals, and the transmitting link is controlled to be closed.

And receiving the frequency signals of the adjacent base stations through the second sub-receiving link at preset time intervals, and determining whether co-frequency interference exists between the base stations and the adjacent base stations through the frequency signals of the adjacent base stations.

Step S53: when the selection circuit connects the second sub-receiving link with the transmitting-receiving port, it is determined whether co-channel interference exists between the base station and the neighboring base station based on the frequency signal of the neighboring base station received by the second sub-receiving link.

Alternatively, the method shown in fig. 6 may be used to implement step S53 in this embodiment, where the method specifically includes steps S61 to S62.

Step S61: demodulating the frequency signals of the adjacent base stations to obtain the transmitting frequencies of the adjacent base stations.

The frequency signals of the neighboring base stations include frequency signals transmitted by the neighboring base stations.

Step S62: if the transmitting frequency is the same as the frequency of the first frequency signal, the same-frequency interference between the base station and the adjacent base station is determined.

If the transmission frequency of the adjacent base station is the same as the frequency of the first frequency signal transmitted by the transmission link of the base station, the same-frequency interference between the base station and the adjacent base station can be determined.

In addition, if the transmission frequency of the adjacent base station is the same as the frequency of the third frequency signal received by the first sub-receiving link, it can be determined that co-channel interference exists between the base station and the adjacent base station.

Optionally, the present embodiment may further include step S54 and step S55.

Step S54: and when the same-frequency interference exists between the base station and the adjacent base station, acquiring the level value of the frequency signal of the adjacent base station.

The frequencies of the adjacent base stations comprise the frequencies P transmitted by the adjacent base stations, the level value unit is dBm, and the level value can be obtained through conversion of the level value (dBm) =10lgP, namely the level value of the frequency signals of the adjacent base stations is obtained.

Step S55: and when the level value is higher than the preset level value, controlling the transmission link to switch the frequency of the first frequency signal to other preset frequencies.

The base station sets a preset level value, and if the level value of the transmitting frequency of the adjacent base station is higher than the preset level value of the base station, the transmitting link is controlled to switch the frequency of the first frequency signal to other preset frequencies. When co-channel interference exists between the uplink signal of the base station and the adjacent base station, the method can be adopted to avoid the co-channel interference.

In an application scenario, when the detected signal level of the adjacent base station is higher than the preset level value-80 dBm, the distance between the base station and the adjacent base station is 400-500 m, and in order to avoid serious co-channel interference to influence normal call, the frequency point of the base station is switched to the frequency points of other preset groups according to an emergency plan. As shown in the following table 1, the 370M emergency communication network plans 5 groups of frequencies, and can select the unused frequency group of other base stations as the new working frequency of the base station according to the detection result so as to avoid co-channel interference.

The embodiment can change the frequency of the base station when the same-frequency interference occurs between the base station and other base stations so as to avoid the situation of the same-frequency interference again. Therefore, the present embodiment can solve the problem that co-channel interference occurs between the base station and other base stations.

The present application further provides an electronic device, as shown in fig. 7, fig. 7 is a schematic structural diagram of an embodiment of the electronic device of the present application, and the electronic device 300 includes a processor 301 and a memory 302 connected to the processor 301.

The processor 301 may also be referred to as a CPU (Central Processing Unit ). The processor 301 may be an integrated circuit chip with signal processing capabilities. Processor 301 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 302 is used to store program data required for the operation of the processor 301.

The processor 301 is also configured to execute program data stored in the memory 302 to implement the above-described communication method.

The application further proposes a computer storage medium. As shown in FIG. 8, FIG. 8 is a schematic diagram of a computer storage medium according to an embodiment of the present application.

The computer storage medium 400 of the embodiment of the present application stores therein the program instructions 410, and the program instructions 410 are executed to implement the above-described communication method.

Wherein the program instructions 410 may form a program file stored in the storage medium in the form of a software product for causing an electronic device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods of the various embodiments of the application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, an optical disk, or other various media capable of storing program codes, or a terminal device such as a computer, a server, a mobile phone, a tablet, or the like.

The computer storage medium 400 of the present embodiment may be, but is not limited to, a usb disk, an SD card, a PD optical drive, a mobile hard disk, a high capacity floppy drive, a flash memory, a multimedia memory card, a server, etc.

In one embodiment, a computer program product or computer program is provided that includes computer instructions stored in a computer storage medium. The processor of the electronic device reads the computer instructions from the computer storage medium and executes the computer instructions to cause the electronic device to perform the steps of the method embodiments described above.

In addition, the above-described functions, if implemented in the form of software functions and sold or used as a separate product, may be stored in a mobile terminal-readable storage medium, i.e., the present application also provides a storage device storing program data that can be executed to implement the method of the above-described embodiments, the storage device may be, for example, a U-disk, an optical disk, a server, or the like. That is, the present application may be embodied in the form of a software product comprising instructions for causing a smart terminal to perform all or part of the steps of the method described in the various embodiments.

The foregoing description is only illustrative of the present application and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present application.

Claims (12)

1. A base station, comprising:

a transmit-receive port;

the transmitting link is connected with the receiving and transmitting port and is used for transmitting a first frequency signal;

a first receiving link for receiving a second frequency signal;

the second receiving link comprises a first sub-receiving link and a second sub-receiving link, and the first sub-receiving link is connected with the receiving and transmitting port and is used for receiving a third frequency signal; the second sub-receiving link is used for receiving the frequency signals of the adjacent base stations;

the selection circuit is respectively connected with the receiving and transmitting port, the first receiving link and the second sub-receiving link and is used for selectively connecting the first receiving link or the second sub-receiving link with the receiving and transmitting port;

and the control circuit is connected with the selection circuit and the second sub-receiving link and is used for controlling the selection circuit to selectively connect the first receiving link or the second sub-receiving link with the receiving-transmitting port based on the working state of the base station, and determining whether co-channel interference exists between the base station and the adjacent base station based on the frequency signal of the adjacent base station when the selection circuit connects the second sub-receiving link with the receiving-transmitting port.

2. The base station of claim 1, wherein the control circuit controls the selection circuit to connect the second sub-receiving link with the transceiver port when the base station is in any one of a power-on state, an idle state, and a non-critical traffic state.

3. The base station of claim 1, wherein the transceiving port comprises:

the transmission channel of the duplexer is connected with the transmission link and is used for transmitting the first frequency signal;

the inverse multiplexer is arranged on the transmitting link, the first end of the inverse multiplexer is connected with the transmitting link, the second end of the inverse multiplexer is connected with the selecting circuit, the third end of the inverse multiplexer is connected with the duplexer, and the inverse multiplexer is used for acquiring the second frequency signal and the frequency signal of the adjacent base station from the transmitting channel.

4. A base station according to claim 3, wherein the selection circuit comprises:

the control end of the switch is connected with the second end of the inverse multiplexer and the control circuit, the first selection end of the switch is connected with the first receiving link, the second selection end of the switch is connected with the second sub-receiving link, and the switch is used for selectively connecting the first receiving link or the second sub-receiving link with the receiving-transmitting port under the control of the control circuit.

5. The base station of claim 4, wherein the first receive link comprises:

the power detection link is coupled with the first end and the second end of the inverse multiplexer;

and the voltage dividing circuit is connected with the first selection end of the switch.

6. The base station of claim 5, wherein the second frequency signal comprises the first frequency signal and a frequency signal reflected by the transmit chain, and wherein the power detection chain comprises:

the transmitting power detection link is coupled and connected with the transmitting link and is used for detecting the power of the first frequency signal;

and the reflected power detection link is coupled with the second end of the inverse multiplexer and is used for detecting the power of the frequency signal reflected by the transmitting link.

7. The base station of claim 5, wherein the voltage divider circuit comprises:

and one end of the resistor is grounded, and the other end of the resistor is connected with the first selection end of the switch.

8. A communication method for the base station of any one of claims 1 to 7, the communication method comprising:

acquiring the working state of the base station;

controlling the selection circuit to selectively connect the first receiving link or the second sub receiving link with the receiving-transmitting port based on the working state;

and when the selection circuit connects the second sub-receiving link with the receiving-transmitting port, determining whether co-channel interference exists between the base station and the adjacent base station based on the frequency signals of the adjacent base station received by the second sub-receiving link.

9. The communication method according to claim 8, wherein the determining whether co-channel interference exists between the base station and the neighboring base station based on the frequency signal of the neighboring base station received by the second sub-reception link comprises:

demodulating the frequency signals of the adjacent base stations to obtain the transmitting frequencies of the adjacent base stations;

and if the transmitting frequency is the same as the frequency of the first frequency signal, determining that co-channel interference exists between the base station and the adjacent base station.

10. The communication method according to claim 8, wherein the operation state of the base station includes a power-on state, an idle state, a non-important traffic state, a traffic state, and controlling the selection circuit to selectively connect the first receiving link or the second sub-receiving link with the transceiving port based on the operation state includes:

when the base station is in a service state, the selection circuit is controlled to connect the first receiving link with the receiving and transmitting port;

and when the base station is in any working state of a power-on state, an idle state and a non-important service state, the selection circuit is controlled to connect the second sub-receiving link with the receiving-transmitting port.

11. The communication method according to claim 10, wherein controlling the selection circuit to connect the second sub-receiving link with the transceiving port when the base station is in any one of a power-on state, an idle state, and a non-important traffic state, comprises:

when the base station is in a power-on state, the selection circuit is controlled to connect the second sub-receiving link with the receiving-transmitting port;

and when the base station is in an idle state or a non-important service state, controlling the selection circuit to connect the second sub-receiving link with the receiving-transmitting port at preset time intervals, and controlling the transmitting link to be closed.

12. The communication method according to claim 8, characterized in that the communication method further comprises:

when the same-frequency interference exists between the base station and the adjacent base station, acquiring a level value of a frequency signal of the adjacent base station;

and when the level value is higher than a preset level value, controlling the transmitting link to switch the frequency of the first frequency signal to other preset frequencies.