CN215871862U - Base station protection circuit and time division duplex base station - Google Patents
Base station protection circuit and time division duplex base station Download PDFInfo
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- CN215871862U CN215871862U CN202122265517.1U CN202122265517U CN215871862U CN 215871862 U CN215871862 U CN 215871862U CN 202122265517 U CN202122265517 U CN 202122265517U CN 215871862 U CN215871862 U CN 215871862U
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Abstract
The embodiment of the utility model discloses a base station protection circuit and a time division duplex base station. The base station protection circuit comprises a control module, an enabling protection module, a relay module, a signal transmitting link and a signal receiving link; the control module is used for generating a first control signal and a second control signal; the enabling protection module is used for receiving a first control signal and a second control signal, outputting a turn-off control signal when the first control signal and the second control signal are enabled simultaneously, and outputting a turn-on control signal when the first control signal and the second control signal are not enabled simultaneously; the relay module is used for being switched on based on the switching-on control signal or being switched off based on the switching-off control signal, and respectively outputting the first control signal and the second control signal to the signal transmitting link and the signal receiving link after being switched on. The embodiment of the utility model can improve the protection mechanism of the TDD base station, reduce the burning risk of the PA and the LNA, and reduce the operation and maintenance cost of the TDD base station.
Description
Technical Field
The embodiment of the utility model relates to the technical field of communication, in particular to a base station protection circuit and a time division duplex base station.
Background
Currently, the fifth Generation Mobile Communication Technology (5G), which has many advantages of high speed, low latency, and large connection, is widely applied in the fields of industry, education, and energy. As an infrastructure for implementing 5G, a 5G base station is a key optimization target of research and development personnel.
In the prior art, a 5G base station operating in a Time Division Duplex (TDD) mode mostly depends on a control mode of configuration software to ensure that only uplink or downlink data transmission is completed at the same Time. However, when a program error or software runs, it is difficult to ensure that only uplink or downlink data transmission is performed at the same time by using the control method based on the configured software. On one hand, when the 5G base station simultaneously performs uplink and downlink data transmission, a Low Noise Amplifier (LNA) inside the base station is easily burned out. On the other hand, when software runs away, it is difficult for the base station to determine the operating state of the internal Power Amplifier (PA), and the PA is also at risk of being burned out during simultaneous uplink and downlink data transmission of the 5G base station.
Disclosure of Invention
The embodiment of the utility model provides a base station protection circuit and a time division duplex base station, which are used for perfecting a protection mechanism of the TDD base station, reducing the burning risk of PA and LNA and reducing the operation and maintenance cost of the TDD base station.
In a first aspect, an embodiment of the present invention provides a base station protection circuit, including a control module, an enable protection module, a relay module, a signal transmitting link, and a signal receiving link;
the control module is used for generating a first control signal and a second control signal;
the enabling protection module is connected with the control module and used for receiving the first control signal and the second control signal, outputting a turn-off control signal when the first control signal and the second control signal are enabled simultaneously, and outputting a turn-on control signal when the first control signal and the second control signal are not enabled simultaneously;
the relay module is connected to the control module and the enable protection module, and configured to turn on based on the turn-on control signal or turn off based on the turn-off control signal, and output the first control signal and the second control signal to the signal transmitting link and the signal receiving link, respectively, after being turned on.
Optionally, the enable protection module includes an exclusive or unit;
a first input end of the exclusive-or unit is connected with a first output end of the control module and used for inputting the first control signal, a second input end of the exclusive-or unit is connected with a second output end of the control module and used for inputting the second control signal, and an output end of the exclusive-or unit is connected with an output end of the enable protection module;
and the XOR unit is used for carrying out XOR processing on the first control signal and the second control signal and then outputting the processed signals.
Optionally, the enable protection module further comprises an inverting unit;
the inverting unit is connected between the exclusive OR unit and the relay module;
the inverting unit is used for inverting the output signal of the exclusive OR unit and outputting the inverted output signal to the relay module.
Optionally, the inverting unit is a nor gate.
Optionally, the relay module is a buffer.
Optionally, the signal transmission chain comprises a power amplifier;
the power amplifier is used for amplifying a base station signal to be transmitted.
Optionally, the signal receiving chain comprises a low noise amplifier;
the low noise amplifier is used for amplifying received user signals.
Optionally, the relay module comprises at least one of a signal enhancement unit and a level transformation unit;
the signal enhancement unit is used for enhancing the signal strength of the first control signal and the second control signal;
the level conversion unit is used for converting the first control signal or the second control signal in a low-voltage level state into a high-voltage level state.
Optionally, a pull resistor is further included;
the pull resistor is used for maintaining the normally open state of the relay module.
In a second aspect, an embodiment of the present invention further provides a tdd base station, including an antenna and a base station protection circuit provided in any embodiment of the present invention; the antenna is connected with the signal transmitting chain and the signal receiving chain.
According to the technical scheme provided by the embodiment of the utility model, the enabling protection module is arranged to receive the first control signal and the second control signal generated by the control module, and when the first control signal and the second control signal are enabled simultaneously, the switching-off control signal is output to switch off the relay module; when the first control signal and the second control signal are enabled at the same time, the conducting control signal is output to control the conduction of the relay module, and then the first control signal and the second control signal are respectively output to the signal transmitting link and the signal receiving link. Compared with the existing mode of controlling the uplink and downlink data transmission of the base station only based on the configuration software, the embodiment of the utility model adaptively adds a hardware control link on the basis of the existing software control so as to perfect the protection mechanism of the TDD base station. Even if the base station generates abnormal conditions such as program error or software running and the like, the embodiment of the utility model can still maintain the normal operation of the base station through a hardware control link, reduce the burning risk of the PA and the LNA, and reduce the operation and maintenance cost of the TDD base station.
Drawings
Fig. 1 is a schematic structural diagram of a base station protection circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another base station protection circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a tdd base station according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad invention. It should be further noted that, for convenience of description, only some structures, not all structures, relating to the embodiments of the present invention are shown in the drawings.
Fig. 1 is a schematic structural diagram of a base station protection circuit according to an embodiment of the present invention. As shown in fig. 1, the base station protection circuit includes a control module 110, an enable protection module 120, a relay module 130, a signal transmission link 140, and a signal reception link 150.
The control module 110 is configured to generate a first control signal TX _ EN and a second control signal RX _ EN.
The enable protection module 120 is connected to the control module 110, and configured to receive the first control signal TX _ EN and the second control signal RX _ EN, output an off control signal BU _ EN' (not shown) when the first control signal TX _ EN and the second control signal RX _ EN are enabled simultaneously, and output an on control signal BU _ EN when the first control signal TX _ EN and the second control signal RX _ EN are not enabled simultaneously.
The relay module 130 is connected to the control module 110 and the enable protection module 120, and is configured to be turned on based on the on-control signal BU _ EN or turned off based on the off-control signal BU _ EN', and output the first control signal TX _ EN and the second control signal RX _ EN to the signal transmitting link 140 and the signal receiving link 150, respectively, after being turned on. In some embodiments, the relay module 130 is, for example, an isolator, a Buffer, a Transceiver, or a Transformer (Buffer, Transceiver, or Transformer). In some embodiments, the relay module 130 directly outputs the first control signal TX _ EN and the second control signal RX _ EN generated by the control module 110 to the signal transmitting link 140 and the signal receiving link 150 after being turned on; in some embodiments, the relay module 130 transforms or enhances the first control signal TX _ EN and the second control signal RX _ EN generated by the control module 110 after being turned on, and then outputs the transformed or enhanced control signals to the signal transmission link 140 and the signal reception link 150.
The relay module 130 is connected to the signal transmitting link 140 and the signal receiving link 150. The signal transmitting chain 140 is used for receiving a first control signal TX _ EN to implement a signal transmitting function of a base station. The signal receiving link 150 is configured to receive a second control signal RX _ EN to implement a signal receiving function of the base station.
As can be appreciated, the first control signal TX _ EN refers to a signal that controls the enabling of the signal transmission link 140. Illustratively, when the first control signal TX _ EN is high, the signal transmitting link 140 can enable and implement the function of signal transmission; when the first control signal TX _ EN is at a low level, the signal transmitting link 140 is in a standby state.
Likewise, the second control signal RX _ EN refers to a signal for controlling the enabling of the signal receiving link 150. Illustratively, when the second control signal RX _ EN is high, the signal receiving link 150 is capable of enabling and implementing the function of signal reception; when the second control signal RX _ EN is at a low level, the signal receiving link 150 is in a standby state.
Based on this, the first control signal TX _ EN and the second control signal RX _ EN being enabled simultaneously means that the first control signal TX _ EN and the second control signal RX _ EN are both high level.
For example, when a program error or software runaway occurs, the first control signal TX _ EN and the second control signal RX _ EN generated by the control module 110 are both high. At this time, the enabling protection module 120 outputs a shutdown control signal BU _ EN' to control the relay module 130 to be shutdown, a loop formed by the control module 110, the enabling protection module 120, the relay module 130, the signal transmitting link 140, and the signal receiving link 150 is open, and both the signal transmitting link 140 and the signal receiving link 150 are in a standby state. Therefore, the present embodiment can prevent the first control signal TX _ EN and the second control signal RX _ EN in a high state from simultaneously enabling the signal transmitting link 140 and the signal receiving link 150, and effectively reduce the risk of burn-out of the PA and the LNA in the base station.
Conversely, the first control signal TX _ EN and the second control signal RX _ EN are not simultaneously enabled, which means that one of the first control signal TX _ EN and the second control signal RX _ EN is at a high level and the other is at a low level. Exemplarily, the non-simultaneous enabling of the first control signal TX _ EN and the second control signal RX _ EN includes the following cases: the first control signal TX _ EN is at a high level, and the second control signal RX _ EN is at a low level; the second control signal RX _ EN is high, and the first control signal TX _ EN is low.
Illustratively, when the first control signal TX _ EN generated by the control module is at a high level and the second control signal RX _ EN is at a low level, the enable protection module 120 outputs the turn-on control signal BU _ EN to turn on the relay module 130. The relay module 130 transmits the first control signal TX _ EN in a high state to the signal transmission link 140, and transmits the second control signal RX _ EN in a low state to the signal reception link 150. At this time, the signal transmitting link 140 works normally, and the signal receiving link 150 is in a standby state, thereby implementing the signal transmitting function of the base station.
Illustratively, when the second control signal RX _ EN generated by the control module is at a high level and the first control signal TX _ EN is at a low level, the enable protection module 120 outputs the turn-on control signal BU _ EN to turn on the relay module 130. The relay module 130 transmits the first control signal TX _ EN in a low level state to the signal transmission link 140, and transmits the second control signal RX _ EN in a high level state to the signal reception link 150. At this time, the signal transmitting link 140 is in a standby state, and the signal receiving link 150 operates normally, thereby implementing a signal receiving function of the base station.
In the embodiment of the present invention, the enabling protection module 120 receives the first control signal TX _ EN and the second control signal RX _ EN generated by the control module 110, and outputs the shutdown control signal BU _ EN' to shutdown the relay module 130 when the first control signal TX _ EN and the second control signal RX _ EN are enabled simultaneously; when the first control signal TX _ EN and the second control signal RX _ EN are not simultaneously enabled, the on control signal BU _ EN is output to control the relay module 130 to be turned on, so that the first control signal TX _ EN and the second control signal RX _ EN are respectively output to the signal transmitting link 140 and the signal receiving link 150. Compared with the existing mode of controlling the uplink and downlink data transmission of the base station only based on the configuration software, the embodiment of the utility model adaptively adds a hardware control link on the basis of the existing software control so as to perfect the protection mechanism of the TDD base station. Even if the base station generates abnormal conditions such as program error or software running and the like, the embodiment of the utility model can still maintain the normal operation of the base station through a hardware control link, reduce the burning risk of the PA and the LNA, and reduce the operation and maintenance cost of the TDD base station.
It should be noted that the first control signal TX _ EN, the second control signal RX _ EN, the turn-off control signal BU _ EN', and the turn-on control signal BU _ EN may be digital signals or analog signals; when the control signal is a digital signal, the value of the control signal may be binary; the transmission mode of the control signal may be wired transmission or wireless transmission, which is not limited in the embodiments of the present invention.
Fig. 2 is a schematic structural diagram of another base station protection circuit according to an embodiment of the present invention. On the basis of the above embodiment, as shown in fig. 2, optionally, the enable protection module 120 includes an exclusive or unit 122.
A first input terminal of the exclusive-or unit 122 is connected to the first output terminal of the control module 110 and is configured to input the first control signal TX _ EN, a second input terminal of the exclusive-or unit 122 is connected to the second output terminal of the control module 110 and is configured to input the second control signal RX _ EN, and an output terminal of the exclusive-or unit 122 is connected to the output terminal of the enable protection module 120.
The exclusive-or unit 122 is configured to output the exclusive-or processed first control signal TX _ EN and the second control signal RX _ EN.
As can be known, the xor unit 122 xors the first control signal TX _ EN and the second control signal RX _ EN and outputs the signals, which includes the following cases: when the first control signal TX _ EN and the second control signal RX _ EN are both at a high level, the output signal of the xor unit 122 is at a low level; when the first control signal TX _ EN is at a high level and the second control signal RX _ EN is at a low level, the output signal of the xor unit 122 is at a high level; when the second control signal RX _ EN is at a high level and the first control signal TX _ EN is at a low level, the output signal of the xor unit 122 is at a high level.
Optionally, the enable protection module 120 further includes an inverting unit 121.
The inverting unit 121 is connected between the exclusive or unit 122 and the relay block 130.
The inverting unit 121 is configured to invert the output signal of the xor unit 122 and output the inverted output signal to the relay module 130.
Here, it can be understood that, under the inverting action of the inverting unit 121, the output signal of the exclusive or unit 122 is opposite in polarity to the output signal of the inverting unit 121.
Illustratively, when the first control signal TX _ EN and the second control signal RX _ EN are both high level, the output signal of the exclusive-or unit 122 is low level, and the output signal of the inverting unit 121 is high level; when the first control signal TX _ EN is at a high level and the second control signal RX _ EN is at a low level, the output signal of the xor unit 122 is at a high level and the output signal of the inverting unit 121 is at a low level; when the second control signal RX _ EN is at a high level and the first control signal TX _ EN is at a low level, the output signal of the xor unit 122 is at a high level and the output signal of the inverter unit 121 is at a low level.
Optionally, the signal transmission chain 140 comprises a power amplifier 141.
The power amplifier 141 is used to amplify a base station signal to be transmitted.
The power amplifier 141 may be any power amplifier 141 suitable for a 5G base station in a TDD mode (hereinafter, referred to as a TDD base station), and the specific model and the configuration parameter of the power amplifier are related to a signal transmission effect intended by the TDD base station, which is not limited in this embodiment of the present invention.
As known, a base station signal refers to a signal transmitted by a TDD base station to a user. The signal type of the base station signal may be an analog signal, for example an electromagnetic wave.
Optionally, the signal receiving chain 150 comprises a low noise amplifier 151.
The low noise amplifier 151 is used to amplify the received user signal.
The low noise amplifier 151 may be any low noise amplifier 151 suitable for a TDD base station, and the specific model and the configuration parameters of the low noise amplifier 151 are related to a signal receiving effect intended by the TDD base station, which is not limited in this embodiment of the present invention.
It is understood that a user signal refers to a signal transmitted by a user to a TDD base station. The signal type of the user signal may be an analog signal, for example an electromagnetic wave.
Optionally, the relay module 130 includes at least one of a signal enhancing unit 131 and a level converting unit 132.
The signal enhancing unit 131 is used for enhancing the signal strength of the first control signal TX _ EN and the second control signal RX _ EN.
The level converting unit 132 is configured to convert the first control signal TX _ EN or the second control signal RX _ EN in a low voltage level state into a high voltage level state.
As can be known, fig. 2 exemplarily shows that an input end of the signal enhancement unit 131 is used as an input end of the relay module 130, and an output end of the signal enhancement unit 131 is used as an output end of the relay module 130 through the level conversion unit 132. It is understood that the present embodiment includes, but is not limited to, having the input terminal of the signal enhancement unit 131 as the input terminal of the relay module 130, and having the output terminal of the signal enhancement unit 131 as the output terminal of the relay module 130 through the level conversion unit 132. Illustratively, the present embodiment may adaptively change the connection relationship between the signal enhancement unit 131 and the level conversion unit 132 such that the input terminal of the level conversion unit 132 serves as the input terminal of the relay module 130 and the output terminal of the level conversion unit 132 serves as the output terminal of the relay module 130 through the signal enhancement unit 131.
Further, it is understood that the first control signal TX _ EN and the second control signal RX _ EN generated by the control module 110 are low voltage signals, and the control signal capable of enabling the signal transmitting link 140 and the signal receiving link 150 is a high voltage signal.
Based on this, for example, when the first control signal TX _ EN is at a high level and the second control signal RX _ EN is at a low level, after the first control signal TX _ EN at a low voltage level is enhanced by the signal enhancement unit 131, the level conversion unit 132 converts the first control signal TX _ EN at a low voltage level to a high voltage level, and the signal transmission link 140 is enabled by receiving the first control signal TX _ EN at a high level and a high voltage level, thereby implementing the transmission function of the base station signal.
Similarly, when the second control signal RX _ EN is at a high level and the first control signal TX _ EN is at a low level, after the second control signal RX _ EN at a low voltage level is enhanced by the signal enhancement unit 131, the level conversion unit 132 converts the second control signal RX _ EN at a low voltage level into a high voltage level, and the signal transmission link 140 is enabled by receiving the second control signal RX _ EN at a high level and a high voltage level, thereby implementing the function of receiving the user signal.
Optionally, the base station protection circuit further comprises a pull resistor.
The pull resistor is used to maintain the normally open state of the relay module 130.
It is to be understood that fig. 2 exemplarily shows that the pull-up resistor is the pull-up resistor 160, a first terminal of the pull-up resistor 160 is connected to the power signal, and a second terminal of the pull-up resistor 160 is connected to the relay module 130, and the above-mentioned setting does not limit the embodiment of the present invention. It is understood that the pull-up resistor in the present embodiment may be, but is not limited to, a pull-up resistor. Illustratively, the pull-up resistor may also be a pull-down resistor, and the relay module 130 is connected to the ground terminal through the pull-down resistor.
It is understood that when the pull-up resistor is a pull-down resistor, the enable protection module 120 needs to adaptively change to include only the xor unit 122. The reason for this is as follows:
the normally open state of the relay module 130 corresponds to a high level of pull-up when the pull-up resistor is the pull-up resistor 160. When the on control signal BU _ EN output by the enable protection module 120 is at a low level, the relay module 130 is turned on. However, according to the exclusive-or logic, when the first control signal TX _ EN and the second control signal RX _ EN are not simultaneously enabled, the signal generated by the exclusive-or unit 122 in the enable protection module 120 is at a high level, and therefore the adaptive setting inverting unit 121 is required to convert the high level signal generated by the exclusive-or unit 122 into the low level conduction control signal BU _ EN to make the relay module 130 conduct.
Based on this, it can be known that when the pull-up resistor is a pull-down resistor, the normally-on state of the relay module 130 corresponds to a low level of pull-down. When the on control signal BU _ EN output by the enable protection module 120 is at a high level, the relay module 130 is turned on. According to the exclusive-or logic, when the first control signal TX _ EN and the second control signal RX _ EN are not simultaneously enabled, the signal generated by the exclusive-or unit 122 in the enable protection module 120 is at a high level, and thus the relay module 130 can be turned on only by taking the high level signal generated by the exclusive-or unit 122 as the on control signal BU _ EN.
Alternatively, the number of stages of the delay times of the exclusive or unit 122 and the inverting unit 121 is less than or equal to the nanosecond level.
It can be known that, in this embodiment, by setting the number of stages of the delay time of the exclusive-or unit 122 and the phase inverting unit 121 to be less than or equal to the nanosecond level, the switching interval of the enable protection module 120 for the internal signal transmitting link 140 and the internal signal receiving link 150 of the base station in the TDD mode can be weakened, so as to ensure that the TDD base station can implement a normal signal transceiving function.
It is understood that, in the present embodiment, different xor units 122 and inverting units 121 may be adaptively selected according to the specific design and cost control situation of the TDD base station, for example, any xor logic circuit may be selected as the xor unit 122, and any non-logic circuit may be selected as the inverting unit 121. Optionally, the inverting unit is a nor gate. Therefore, the device model selection process of the embodiment is relatively simple, and the design flow of the TDD base station can be simplified.
Optionally, the Control module 110 employs a Micro Control Unit (MCU).
As can be appreciated, FIG. 2 illustrates the control module 110 as employing an MCU. It is understood that the control module 110 may be any device or apparatus capable of generating the first control signal TX _ EN and the second control signal RX _ EN and having corresponding control functions. For example, the control module 110 may also adopt a single chip or a system on a chip, and the like, which is not limited in this embodiment of the present invention.
The embodiment of the present invention generates a corresponding high level pull-up signal by setting the pull-up resistor 160, so as to maintain the normally open state of the relay module 130. After the control module 110 generates the first control signal TX _ EN and the second control signal RX _ EN, the xor unit 122 receives the first control signal TX _ EN and the second control signal RX _ EN, and adaptively outputs a low level signal when the first control signal TX _ EN and the second control signal RX _ EN are enabled simultaneously, and the low level signal is converted into the high level shutdown control signal BU _ EN' by the inverting unit 121, so that the relay module 130 continues to be maintained in the normally open state; when the first control signal TX _ EN and the second control signal RX _ EN are not enabled simultaneously, the exclusive-or unit 122 adaptively outputs a high level signal, the high level signal is converted into a low level conduction control signal BU _ EN through the phase inverting unit 121 to control the relay module 130 to conduct, the relay module 130 strengthens the signal strength of the first control signal TX _ EN and the second control signal RX _ EN and adaptively converts the signal strength into a high level state, and then correspondingly outputs the first control signal TX _ EN and the second control signal RX _ EN to the signal transmitting link 140 and the signal receiving link 150, thereby finally realizing the signal transceiving function of the TDD base station.
Compared with the existing mode of controlling the uplink and downlink data transmission of the base station only based on the configuration software, the embodiment of the utility model adaptively adds a hardware control link on the basis of the existing software control so as to perfect the protection mechanism of the TDD base station. Even if the base station generates abnormal conditions such as program error or software running and the like, the embodiment of the utility model can still maintain the normal operation of the base station through a hardware control link, reduce the burning risk of the PA and the LNA, and reduce the operation and maintenance cost of the TDD base station.
The embodiment of the utility model also provides a time division duplex base station which comprises an antenna and the base station protection circuit provided by any embodiment of the utility model. Exemplarily, fig. 3 is a schematic structural diagram of a tdd base station according to an embodiment of the present invention. As shown in fig. 3, an antenna 170 is coupled to signal transmission chain 140 and signal reception chain 150.
It will be appreciated that the antenna 170 is used to transmit base station signals when the signal transmission link 140 is enabled; when signal receiving link 150 is enabled, a user signal is received.
It should be noted that the technical principle and the implementation effect of the tdd base station provided in this embodiment are similar to those of the base station protection circuit, and are not described in detail again.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A base station protection circuit is characterized by comprising a control module, an enabling protection module, a relay module, a signal transmitting link and a signal receiving link;
the control module is used for generating a first control signal and a second control signal;
the enabling protection module is connected with the control module and used for receiving the first control signal and the second control signal, outputting a turn-off control signal when the first control signal and the second control signal are enabled simultaneously, and outputting a turn-on control signal when the first control signal and the second control signal are not enabled simultaneously;
the relay module is connected to the control module and the enable protection module, and configured to turn on based on the turn-on control signal or turn off based on the turn-off control signal, and output the first control signal and the second control signal to the signal transmitting link and the signal receiving link, respectively, after being turned on.
2. The base station protection circuit of claim 1, wherein the enable protection module comprises an exclusive or unit;
a first input end of the exclusive-or unit is connected with a first output end of the control module and used for inputting the first control signal, a second input end of the exclusive-or unit is connected with a second output end of the control module and used for inputting the second control signal, and an output end of the exclusive-or unit is connected with an output end of the enable protection module;
and the XOR unit is used for carrying out XOR processing on the first control signal and the second control signal and then outputting the processed signals.
3. The base station protection circuit of claim 2, wherein the enable protection module further comprises an inverting unit;
the inverting unit is connected between the exclusive OR unit and the relay module;
the inverting unit is used for inverting the output signal of the exclusive OR unit and outputting the inverted output signal to the relay module.
4. The base station protection circuit of claim 3, wherein the inverting unit is a NOR gate.
5. The base station protection circuit of claim 1, wherein the relay module is a buffer.
6. The base station protection circuit of claim 1, wherein the signal transmission link comprises a power amplifier;
the power amplifier is used for amplifying a base station signal to be transmitted.
7. The base station protection circuit of claim 1, wherein the signal receiving chain comprises a low noise amplifier;
the low noise amplifier is used for amplifying received user signals.
8. The base station protection circuit of claim 1, wherein the relay module comprises at least one of a signal enhancement unit and a level conversion unit;
the signal enhancement unit is used for enhancing the signal strength of the first control signal and the second control signal;
the level conversion unit is used for converting the first control signal or the second control signal in a low-voltage level state into a high-voltage level state.
9. The base station protection circuit of claim 8, further comprising a pull resistor;
the pull resistor is used for maintaining the normally open state of the relay module.
10. A time division duplex base station comprising an antenna and a base station protection circuit according to any one of claims 1 to 9; the antenna is connected with the signal transmitting chain and the signal receiving chain.
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| CN202122265517.1U CN215871862U (en) | 2021-09-17 | 2021-09-17 | Base station protection circuit and time division duplex base station |
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| CN202122265517.1U CN215871862U (en) | 2021-09-17 | 2021-09-17 | Base station protection circuit and time division duplex base station |
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