WO2018119872A1 - 通信故障检测方法、装置以及射频拉远电路 - Google Patents

通信故障检测方法、装置以及射频拉远电路 Download PDF

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Publication number
WO2018119872A1
WO2018119872A1 PCT/CN2016/113004 CN2016113004W WO2018119872A1 WO 2018119872 A1 WO2018119872 A1 WO 2018119872A1 CN 2016113004 W CN2016113004 W CN 2016113004W WO 2018119872 A1 WO2018119872 A1 WO 2018119872A1
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WIPO (PCT)
Prior art keywords
test signal
channel
signal
antenna
processed
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Application number
PCT/CN2016/113004
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English (en)
French (fr)
Inventor
朱昌富
陈志达
陈涛
方友平
Original Assignee
海能达通信股份有限公司
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Application filed by 海能达通信股份有限公司 filed Critical 海能达通信股份有限公司
Priority to PCT/CN2016/113004 priority Critical patent/WO2018119872A1/zh
Publication of WO2018119872A1 publication Critical patent/WO2018119872A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a communication fault detection method and apparatus, and a radio frequency remote circuit.
  • the small-signal loopback method mainly detects whether the internal radio link of the base station is abnormal by means of spontaneous self-receiving, but the small-signal loopback self-test mode has a small detection range, and is limited to the small-signal link detection of the base station, and cannot be used for the power amplifier.
  • the duplexer and the communication system perform objective detection. The method of detecting whether the base station system works normally by using the instrument device or the terminal device, although it is possible to make a judgment on whether the base station system itself works normally, the labor cost is high, and the cost of the instrument resource is also high, which adds an additional cost burden.
  • the technical problem to be solved by the present invention is to provide a communication failure detecting method and device, and a radio frequency remote circuit, which can detect the failure of the communication system quickly and at low cost without changing the hardware of the existing communication system.
  • a first aspect of the present invention provides a communication fault detection method, including: transmitting, by using a first antenna of a radio remote unit, a test signal from a first transmit channel of the radio remote unit; Receiving, by the second antenna of the radio remote unit, the test signal, and returning the received test signal to a second transmit channel of the radio remote unit; sending the test signal received by the second transmit channel And to a second receiving channel of the radio remote unit or/and a feedback channel connected to the second transmitting channel;
  • the processing signal received by the second receiving channel or/and the feedback channel is processed, and whether the received test signal is determined
  • the step of determining whether the communication system has a fault includes: processing the received test signal by using a radio frequency link of the radio remote unit and a baseband signal processing unit; and processing the processed test signal
  • the test signals sent by the first antenna are compared, and the processed test signal is determined to be abnormal according to the comparison result.
  • the processing signal received by the second receiving channel or/and the feedback channel is processed, and whether the received test signal is determined
  • the step of determining whether the communication system has a fault includes: processing the received test signal by using a radio frequency link of the radio remote unit and a baseband signal processing unit; and acquiring the processed test signal
  • the power value is determined whether the power value is within a preset normal range, and if the power value is not within the normal range, determining that the communication system is faulty.
  • the radio frequency link and the baseband signal processing through the second receiving channel or/and the feedback channel includes: receiving, by using the feedback channel, the test signal; processing, by using a baseband signal processing unit of the feedback channel, the received test signal, by using a radio frequency switch After the second receiving channel is selected, the processed test signal is further processed by the radio frequency link of the second receiving channel.
  • the step of transmitting, by the first antenna of the radio remote unit, the test signal from the first transmitting channel of the radio remote unit includes: The first transmitting channel of the radio remote unit rotates the test signal of the baseband signal type through the amplifier; the amplified test signal is processed by the circulator and the duplexer, and the processed test signal is sent to the a first antenna; the first antenna converts the processed test signal into a radio frequency signal and transmits the signal.
  • a second aspect of the present invention provides a communication failure detecting apparatus, which includes a signal transmitting unit, a signal receiving unit, a signal transmitting unit, and a signal processing unit, and the signal transmitting unit is configured to pass a first antenna of the radio remote unit transmits a test signal from a first transmit channel of the radio remote unit; the signal receiving unit is configured to receive the test signal by using a second antenna of the radio remote unit And returning the received test signal to the second transmit channel through the duplexer of the second transmit channel; the signal sending unit is configured to send the test signal received by the second transmit channel to the radio frequency pull a second receiving channel of the remote unit or/and a feedback channel connected to the second transmitting channel; the signal processing unit processes the test signal received by the second receiving channel or/and the feedback channel, and determines Whether the received test signal has an abnormality to determine whether the communication system has a fault.
  • the signal processing unit is specifically configured to: use the radio frequency link of the radio remote unit and the baseband signal processing unit to receive the received test signal Performing processing; comparing the processed test signal with the test signal sent by the first antenna, and determining, according to the comparison result, whether the processed test signal has an abnormality.
  • the signal processing unit is specifically configured to: use the radio frequency link of the radio remote unit and the baseband signal processing unit to receive the received test signal Performing processing; obtaining a power value of the processed test signal; determining whether the power value is within a preset normal range, and determining that the communication system has a fault if the power value is not within the normal range.
  • the signal processing unit is specifically configured to receive the test signal by using the feedback;
  • the baseband signal processing unit of the feedback channel processes the received test signal, and after selecting the second receiving channel by using a radio frequency switch, further processing the processed test signal by using the radio frequency link of the second receiving channel deal with.
  • the signal transmitting unit is specifically configured to: use a first transmit channel of the radio remote unit to amplify a test signal of a baseband signal type through an amplifier; The amplified test signal is processed by the circulator and the duplexer, and the processed test signal is sent to the first antenna; after the processed signal is converted into a radio frequency signal by the first antenna Launch.
  • a third aspect of the present invention provides a communication failure detecting apparatus, where the communication failure detecting apparatus includes a processor and a memory.
  • the processor is configured to transmit, by using a first antenna of the radio remote unit, a test signal from a first transmit channel of the radio remote unit; and further configured to receive, by using a second antenna of the radio remote unit Testing the signal, and returning the received test signal to the second transmit channel through the duplexer of the second transmit channel; and further configured to send the test signal received by the second transmit channel to the remote radio unit And a second receiving channel or/and a feedback channel connected to the second transmitting channel; and configured to process the test signal received by the second receiving channel or/and the feedback channel, and determine that the receiving Whether the test signal is abnormal to determine whether the communication system is faulty;
  • the memory is configured to store a program running in the processor and data generated during the running of the program.
  • the processor is specifically configured to perform the received test signal by using a radio frequency link of the radio remote unit and a baseband signal processing unit Processing, comparing the processed test signal with the test signal sent by the first antenna, and determining whether the processed test signal has an abnormality according to the comparison result.
  • the processor is specifically configured to perform, by using a radio frequency link of the radio remote unit and a baseband signal processing unit, the received test signal Processing; obtaining a power value of the processed test signal; determining whether the power value is within a preset normal range, and if the power value is not within the normal range, determining that the communication system is faulty.
  • the processor is specifically configured to receive the test signal by using the feedback;
  • the baseband signal processing unit of the channel processes the received test signal, and after selecting the second receiving channel by using a radio frequency switch, further processing the processed test signal by using the radio frequency link of the second receiving channel .
  • the processor is specifically configured to: use a first transmit channel of the radio remote unit to amplify a test signal of a baseband signal type through an amplifier;
  • the amplified test signal is processed by the circulator and the duplexer, and the processed test signal is sent to the first antenna; and the processed test signal is converted into a radio frequency signal by the first antenna. emission.
  • the fourth aspect of the present invention provides a radio frequency remote circuit, including a first antenna, a first transmitting channel and a first receiving channel connected to the first antenna, and a first connecting the first transmitting channel.
  • a transmitting channel outputs a test signal to the first antenna, and transmits the test signal through the first antenna;
  • the second transmitting channel receives the test signal through the second antenna, and outputs the test signal to the a second receiving channel or/and the feedback channel connected to the second transmitting channel;
  • the second receiving channel or/and the feedback channel outputting the test signal to a radio frequency link and a baseband signal processing unit,
  • processing the test signal by using the radio frequency link and the baseband signal processing unit, and determining whether the test signal has an abnormality to determine a communication system Whether there is a fault
  • the radio frequency link and the baseband signal processing unit process the received test signal, and the processed test signal and the first The test signals sent by the antenna are compared, and the processed test signal is determined to be abnormal according to the comparison result. .
  • the radio frequency link and the baseband signal processing unit process the received test signal; and obtain a power value of the processed test signal Determining whether the power value is within a preset normal range, and if the power value is not within the normal range, determining that the communication system is faulty.
  • the baseband signal processing unit of the feedback channel performs the received test signal After the second receiving channel is selected by the radio frequency switch, the radio frequency link of the second channel channel further processes the processed test signal.
  • the test signal from the first transmitting channel is transmitted by the first antenna of the radio remote unit, and the second antenna receiving unit of the radio remote unit is used. Deriving the test signal, and returning the received test signal to the second transmitting channel, and transmitting the test signal received by the second transmitting channel to the feedback channel connected to the second receiving channel or/and the second transmitting channel Finally, the test signal received by the second receiving channel or/and the feedback channel is processed, and it is determined whether the received test signal has an abnormality to determine whether the communication system has a fault.
  • FIG. 1 is a schematic flow chart of an embodiment of a communication failure detecting method according to the present invention.
  • FIG. 2 is a schematic structural diagram of an embodiment of a communication failure detecting apparatus according to the present invention.
  • FIG. 3 is a schematic structural diagram of another embodiment of a communication failure detecting apparatus according to the present invention.
  • FIG. 4 is a schematic structural view of an embodiment of a radio frequency remote circuit of the present invention.
  • FIG. 5 is a schematic structural view of another embodiment of the radio frequency remote circuit of the present invention.
  • FIG. 1 is a schematic flowchart of an embodiment of a communication failure detecting method according to the present invention. As shown in FIG. 1, the communication failure detecting method of this embodiment includes the following steps:
  • the radio remote unit is a communication circuit that separates the baseband unit from the radio unit. Normally, the baseband optical signal is converted to a radio frequency signal at a remote end to be amplified and transmitted.
  • the first transmission channel of the radio remote unit transmits the test signal of the baseband signal type to the first antenna of the radio remote unit, and correspondingly, the radio frequency is extended.
  • the first antenna of the unit transmits the test signal.
  • the test signal can be any type of communication signal, which is not limited herein.
  • the first transmitting channel of the radio remote unit converts the test signal of the baseband signal type of the first frequency through the amplifier, and then reaches the first antenna through the circulator and the duplexer, and the first antenna converts the test signal into The RF signal is transmitted afterwards.
  • the test signal is received by the second antenna of the radio remote unit.
  • the isolation between the second antenna and the first antenna is a predetermined value. For example, 35dB ⁇ 5dB, etc., as long as the test signal can be normally transmitted and received, it is not limited herein.
  • the duplexer connected to the second antenna by the radio remote unit After receiving the test signal through the second antenna, the duplexer connected to the second antenna by the radio remote unit returns the test signal to the second transmit channel, and the duplexer can be multiplexed to avoid adding other elements.
  • the cost of the device increases and the system structure is complicated.
  • the test signal Since the received signal is the processed RF signal of the first antenna, in order to determine whether the test signal is normal, the test signal needs to be demodulated and further processed.
  • the multiplexing and the second transmitting channel are used. a manner of connecting the second receiving channel or/and the feedback channel, so after the second transmitting channel receives the test signal, the test signal is further sent to the second receiving channel of the radio remote unit or And in a feedback channel connected to the second transmitting channel.
  • the test signal is returned to the feedback channel of the remote radio unit connected to the second antenna, and the baseband signal processing unit of the feedback channel demodulates the test signal to obtain a baseband signal, and then The demodulated baseband signal is further processed through a radio frequency link, such as filtering.
  • a radio frequency link such as filtering
  • the test signal is first returned to the second antenna connection feedback channel of the radio remote unit, and the baseband processing signal unit of the feedback channel is used to demodulate the test signal to obtain a baseband signal. And then selecting a second receiving channel through the circulator and the RF switch connected to the feedback channel, introducing the processed baseband signal into the second receiving channel, and further processing the demodulated test signal through the second receiving channel .
  • the RF switch is a single pole double switch.
  • the test signal is further abnormally judged by the second receiving channel or/and the feedback channel to further determine whether the communication system has an abnormality.
  • the processed test signal is compared with the original test signal from the first transmit channel transmitted by the first antenna through the second receiving channel or/and the feedback channel, and is determined according to the comparison result. Whether the processed test signal has an abnormality. For example, determining whether the demodulated test signal is identical to the original transmitted test signal or whether the error is within a valid range. If the same or the error is within the valid range, the demodulated test signal is a normal signal, that is, the communication The system is in normal working condition. If the demodulated test signal is different from the original transmitted test signal or the error exceeds the effective range, it is determined that the demodulated test signal is abnormal, and further determining that the communication system is abnormal.
  • the feedback channel determines whether there is an abnormality in the processed test signal
  • the transmission power of the original test signal sent by the radio remote unit through the first antenna is 30 dB
  • the isolation of the first antenna and the second antenna is 35 dB ⁇ 5 dB.
  • the power of the test signal received by the second antenna is 30dB-(35dB ⁇ 5dB).
  • the gain of the feedback channel is -10dB
  • the gain of the RF link is ⁇ 3.5dB
  • the processed test signal is a normal signal, that is, the communication system works normally, and if the power of the processed test signal is not equal to the above value, It indicates that the processed test signal is an abnormal signal, that is, it is determined that there is an abnormality in the communication system at this time.
  • the second receiving channel determines whether the processed test signal has an abnormality
  • the transmitting power of the original test signal sent by the radio remote unit through the first antenna is 30 dB
  • the isolation between the first antenna and the second antenna is 35 dB.
  • the power of the test signal received by the second antenna is 30dB-(35dB ⁇ 5dB).
  • the gain of the second receiving channel is 10dB
  • the gain of the RF link is ⁇ 3.5dB.
  • the processed test signal is a normal signal, that is, the communication system works normally, and if the power of the processed test signal is not equal to the above value, it indicates The processed test signal is an abnormal signal, that is, it is determined that there is an abnormality in the communication system at this time.
  • the test signal from the first transmit channel is transmitted by the first antenna of the radio remote unit, and the test signal is received by the second antenna of the radio remote unit, and the received signal is received.
  • the test signal Returning the test signal to the second transmitting channel, and transmitting the test signal received by the second transmitting channel to the feedback channel connected to the second receiving channel or/and the second transmitting channel, and finally to the second receiving channel Or / and the test signal received by the feedback channel is processed, and it is determined whether there is an abnormality in the received test signal to determine whether the communication system has a fault.
  • FIG. 2 is a schematic structural diagram of an embodiment of a communication failure detecting apparatus according to the present invention.
  • the communication failure detecting apparatus of the present embodiment includes a signal transmitting unit 201, a signal receiving unit 202, a signal transmitting unit 203, and a signal processing unit 204.
  • the signal transmitting unit 201 is configured to transmit a test signal from the first transmitting channel of the radio remote unit through the first antenna of the radio remote unit.
  • the radio remote unit is a communication circuit that separates the baseband unit from the radio unit. Normally, the baseband optical signal is converted to a radio frequency signal at a remote end to be amplified and transmitted.
  • the signal transmitting unit 201 first transmits the test signal of the baseband signal type to the first antenna of the radio remote unit through the first transmitting channel of the radio remote unit, correspondingly, The test signal is transmitted by the first antenna of the radio remote unit.
  • the test signal can be any type of communication signal, which is not limited herein.
  • the first transmitting channel of the signal transmitting unit 201 amplifies the test signal of the baseband signal type of the first frequency through the amplifier, and then reaches the first antenna through the circulator and the duplexer, and the first antenna converts the test signal into The RF signal is transmitted afterwards.
  • the signal receiving unit 202 is configured to receive the test signal by using a second antenna of the radio remote unit, and return the received test signal to the second transmit channel through a duplexer of the second transmit channel.
  • the isolation between the second antenna and the first antenna is a predetermined value. For example, 35dB ⁇ 5dB, etc., as long as the test signal can be normally transmitted and received, it is not limited herein.
  • the signal receiving unit 202 After receiving the test signal by the second antenna, the signal receiving unit 202 returns the test signal to the second transmitting channel through the duplexer connected to the second antenna by the radio remote unit, and passes through the multiplexing duplexer.
  • the signal receiving unit 202 After receiving the test signal by the second antenna, the signal receiving unit 202 returns the test signal to the second transmitting channel through the duplexer connected to the second antenna by the radio remote unit, and passes through the multiplexing duplexer.
  • the signal sending unit 203 is configured to send the test signal received by the second transmitting channel to a second receiving channel of the radio remote unit or/and a feedback channel connected to the second transmitting channel.
  • the test signal Since the received signal is the processed RF signal of the first antenna, in order to determine whether the test signal is normal, the test signal needs to be demodulated and further processed.
  • the multiplexing and the second transmitting channel are used. a manner of connecting the second receiving channel or/and the feedback channel. Therefore, after receiving the test signal, the signal sending unit 203 further sends the test signal to the second terminal of the radio remote unit a receiving channel or/and a feedback channel connected to the second transmitting channel.
  • the signal processing unit 204 processes the test signal received by the second receiving channel or/and the feedback channel, and determines whether the received test signal has an abnormality to determine whether the communication system has a fault.
  • the signal processing unit 204 returns the test signal to the feedback channel of the remote radio unit connected to the second antenna, and demodulates the test signal by using the baseband signal processing unit of the feedback channel.
  • the baseband signal is then further processed by the demodulated baseband signal through a radio frequency link, such as filtering.
  • the signal processing unit 204 first returns the test signal to the second antenna connection feedback channel of the radio remote unit, and first demodulates the test signal by using the baseband processing signal unit of the feedback channel. Obtaining a baseband signal, and then selecting a second receiving channel through the circulator and a radio frequency switch connected to the feedback channel, introducing the processed baseband signal into the second receiving channel, and performing demodulation testing through the second receiving channel pair The signal is processed further.
  • the RF switch is a single pole double switch.
  • the signal processing unit 204 further performs an abnormality determination on the test signal through the second receiving channel or/and the feedback channel to further determine whether the communication system has an abnormality.
  • the signal processing unit 204 compares the processed test signal with the original test signal from the first transmit channel transmitted by the first antenna through the second receive channel or/and the feedback channel, according to The comparison result determines whether there is an abnormality in the processed test signal. For example, determining whether the demodulated test signal is identical to the original transmitted test signal or whether the error is within a valid range. If the same or the error is within the valid range, the demodulated test signal is a normal signal, that is, the communication The system is in normal working condition. If the demodulated test signal is different from the original transmitted test signal or the error exceeds the effective range, it is determined that the demodulated test signal is abnormal, and further determining that the communication system is abnormal.
  • the signal processing unit 204 may determine whether the processed test signal has an abnormality by determining the effective range of the processed test signal power to the second receiving channel or/and the feedback channel. .
  • the signal transmitting unit of the present embodiment transmits a test signal from the first transmitting channel through the first antenna of the radio remote unit, and the signal receiving unit receives the test by using the second antenna of the radio remote unit Signaling, and returning the received test signal to the second transmitting channel, the signal sending unit transmitting the test signal received by the second transmitting channel to the feedback channel connected to the second receiving channel or/and the second transmitting channel.
  • the last signal processing unit processes the test signal received by the second receiving channel or/and the feedback channel, and determines whether the received test signal has an abnormality to determine whether the communication system has a fault.
  • FIG. 3 is a schematic structural diagram of another embodiment of a communication fault detecting apparatus according to the present invention.
  • the communication failure detecting apparatus of the present embodiment includes a processor 301 and a memory 302.
  • the processor 301 and the memory 302 are coupled together by a bus 303.
  • the bus 303 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus.
  • various buses are labeled as bus 303 in the figure.
  • the processor 301 is configured to transmit a test signal from the first transmitting channel of the radio remote unit through the first antenna of the radio remote unit.
  • the radio remote unit is a communication circuit that separates the baseband unit from the radio unit. Normally, the baseband optical signal is converted to a radio frequency signal at a remote end to be amplified and transmitted.
  • the processor 301 first transmits the test signal of the baseband signal type to the first antenna of the radio remote unit through the first transmission channel of the radio remote unit, correspondingly, through The first antenna of the radio remote unit transmits the test signal.
  • the test signal can be any type of communication signal, which is not limited herein.
  • the first transmit channel of the processor 301 amplifies the test signal of the baseband signal type of the first frequency through the amplifier, and then reaches the first antenna through the circulator and the duplexer, and the first antenna converts the test signal into the radio frequency.
  • the signal is transmitted after the signal.
  • the processor 301 is further configured to receive the test signal by using a second antenna of the radio remote unit, and return the received test signal to the second transmit channel through a duplexer of the second transmit channel.
  • the isolation between the second antenna and the first antenna is a predetermined value. For example, 35dB ⁇ 5dB, etc., as long as the test signal can be normally transmitted and received, it is not limited herein.
  • the processor 301 After receiving the test signal by the second antenna, the processor 301 returns the test signal to the second transmit channel through the duplexer connected to the second antenna by the radio remote unit, and multiplexes the duplexer through the duplexer.
  • the processor 301 After receiving the test signal by the second antenna, the processor 301 returns the test signal to the second transmit channel through the duplexer connected to the second antenna by the radio remote unit, and multiplexes the duplexer through the duplexer.
  • the processor 301 is further configured to send the test signal received by the second transmitting channel to a second receiving channel of the radio remote unit or/and a feedback channel connected to the second transmitting channel.
  • the test signal Since the received signal is the processed RF signal of the first antenna, in order to determine whether the test signal is normal, the test signal needs to be demodulated and further processed.
  • the multiplexing and the second transmitting channel are used.
  • the second receiving channel or/and the feedback channel are connected. Therefore, after receiving the test signal, the processor 301 further sends the test signal to the second receiving and the remote receiving unit.
  • a channel or/and a feedback channel connected to the second transmission channel.
  • the processor 301 processes the test signal received by the second receiving channel or/and the feedback channel, and determines whether the received test signal has an abnormality to determine whether the communication system has a fault.
  • the processor 301 returns the test signal to the feedback channel of the remote radio unit connected to the second antenna, and the baseband signal processing unit of the feedback channel demodulates the test signal to obtain a baseband.
  • the signal is then further processed by the demodulated baseband signal through a radio frequency link, such as filtering.
  • the processor 301 first returns the test signal to the second antenna connection feedback channel of the radio remote unit, and first demodulates the test signal by using the baseband processing signal unit of the feedback channel.
  • the baseband signal is then selected by the circulator and the RF switch connected to the feedback channel to select the second receiving channel, the processed baseband signal is introduced to the second receiving channel, and the demodulated test signal is transmitted through the second receiving channel Further processing.
  • the RF switch is a single pole double switch.
  • the processor 301 further performs an abnormality determination on the test signal through the second receiving channel or/and the feedback channel to further determine whether the communication system has an abnormality.
  • the processor 301 compares the processed test signal with the original test signal from the first transmit channel transmitted by the first antenna through the second receiving channel or/and the feedback channel, according to the ratio It is determined whether there is an abnormality in the processed test signal for the result. For example, determining whether the demodulated test signal is identical to the original transmitted test signal or whether the error is within a valid range. If the same or the error is within the valid range, the demodulated test signal is a normal signal, that is, the communication The system is in normal working condition. If the demodulated test signal is different from the original transmitted test signal or the error exceeds the effective range, it is determined that the demodulated test signal is abnormal, and further determining that the communication system is abnormal.
  • the processor 301 may determine whether the processed test signal has an abnormality by determining a valid range of the power of the processed test signal for the second receiving channel or/and the feedback channel.
  • the memory 302 is configured to store a program running in the processor and data generated during the running of the program. Read-only memory and random access memory may be included and instructions and data may be provided to processor 301. A portion of the memory 302 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the memory 302 stores the following elements, executable units or data structures, or a subset thereof, or an extended set thereof:
  • Operation instructions include various operation instructions for implementing various operations.
  • Operating system Includes a variety of system programs for implementing various basic services and handling hardware-based tasks.
  • the processor 301 performs the above operation by calling an operation instruction stored in the memory 302, which can be stored in the operating system.
  • the processor 301 can also be called a CPU (Central Processing) Unit, central processing unit).
  • Memory 302 can include read only memory and random access memory and provides instructions and data to processor 901. A portion of the memory 302 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • Processor 301 may be an integrated circuit chip with signal processing capabilities.
  • the processor 301 can also be integrated with a chip that generates a first baseband signal and a second baseband signal, and can integrate a comparator and a phase shifting function for the first baseband and the second baseband.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 301 or an instruction in a form of software.
  • the processor 301 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware. Component.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software units in the decoding processor.
  • the software unit can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 302, and the processor 301 reads the information in the memory 302 and completes the steps of the above method in combination with its hardware.
  • the processor of the embodiment transmits the test signal from the first transmit channel through the first antenna of the radio remote unit, and receives the test signal by using the second antenna of the radio remote unit, and Receiving the test signal back to the second transmitting channel, sending the test signal received by the second transmitting channel to the second receiving channel or/and the feedback channel connected to the second transmitting channel, and finally the second The test signal received by the receiving channel or/and the feedback channel is processed, and it is determined whether the received test signal has an abnormality to determine whether the communication system has a fault.
  • FIG. 4 is a schematic structural diagram of an embodiment of a radio remote unit according to the present invention.
  • the radio remote circuit is a communication circuit that separates the baseband unit from the radio frequency unit. Normally, the baseband optical signal is converted to a radio frequency signal at a remote end to be amplified and transmitted.
  • the radio remote control circuit of the present embodiment includes a first antenna 401, a first transmit channel 402 and a first receive channel 403 connected to the first antenna, and a first feedback channel 404 connected to the first transmit channel 402. a second antenna 405, a second transmit channel 406 and a second receive channel 407 connected to the second antenna, and a feedback channel 408 connected to the second transmit channel 406, further including a radio frequency link (not shown) and a baseband signal Processing unit (not shown).
  • the first transmitting channel 402 outputs a test signal to the first antenna 401 and transmits the test signal through the first antenna 401.
  • the second transmitting channel 406 receives the test signal through the second antenna 401 and outputs to the second receiving channel 407 or/and the feedback channel 408; the second receiving channel 407 or/and the feedback channel 408 outputs a test signal And to the RF link and the baseband signal processing unit, the RF link and the baseband signal processing unit process the test signal, and determine whether the test signal has an abnormality to determine whether the communication system has a fault.
  • the first transmission channel 402 of the radio remote circuit transmits the test signal of the baseband signal type to the first antenna 401, and correspondingly, the first antenna 401 is The test signal is transmitted.
  • the test signal can be any type of communication signal, which is not limited herein.
  • the first transmit channel 402 amplifies the test signal of the baseband signal type of the first frequency by the first amplifier 409, and then reaches the first antenna 401 through the first circulator 410 and the first duplexer 411, the first The antenna 401 converts the test signal into a radio frequency signal and transmits it.
  • the second antenna 405 receives the test signal and returns the received test signal to the second transmit channel 406.
  • the isolation between the second antenna and the first antenna is a predetermined value. For example, 35dB ⁇ 5dB, etc., as long as the test signal can be normally transmitted and received, it is not limited herein.
  • the second duplexer 412 connected to the second antenna 405 through the radio remote unit returns the test signal to the second transmit channel, and the second duplex is multiplexed.
  • the manner of the device 412 can avoid the increase in cost caused by the addition of other components and the complication of the system structure.
  • the second transmit channel 406 After receiving the test signal, the second transmit channel 406 further transmits the test signal to the second receive channel 407 or/and the feedback channel 408 connected to the second transmit channel 406.
  • the test signal received by the second receiving channel 407 or/and the feedback channel 408 is processed, and the RF link and the baseband signal processing unit are used to determine whether the received test signal is abnormal, to determine whether the communication system has a fault.
  • the second transmit channel 406 returns the test signal to the feedback channel 408 connected to the second transmit channel 406, and the baseband signal processing unit of the feedback channel 408 demodulates the test signal to obtain a baseband.
  • the signal is then further processed by the demodulated baseband signal through a radio frequency link, such as filtering.
  • the second transmitting channel 506 first returns the test signal to the second transmitting channel 506 and is connected to the feedback channel 508.
  • the baseband processing signal unit of the feedback channel 508 is used first.
  • the test signal is demodulated to obtain a baseband signal, and then the second receiving channel 507 is selected by the second circulator 513 and the RF switch 414 connected to the feedback channel, and the processed baseband signal is introduced into the second receiving channel 507, and The demodulated test signal is further processed by the second receiving channel 507.
  • the RF switch 514 is a single pole double switch.
  • the second receiving channel or/and the feedback channel performs an abnormal determination on the test signal to further determine whether the communication system has an abnormality.
  • the second receiving channel or/and the feedback channel compares the processed test signal with the original test signal transmitted by the first antenna from the first transmitting channel, according to the comparison result Determine whether there is an abnormality in the processed test signal. For example, determining whether the demodulated test signal is identical to the original transmitted test signal or whether the error is within a valid range. If the same or the error is within the valid range, the demodulated test signal is a normal signal, that is, the communication The system is in normal working condition. If the demodulated test signal is different from the original transmitted test signal or the error exceeds the effective range, it is determined that the demodulated test signal is abnormal, and further determining that the communication system is abnormal.
  • whether the power of the processed test signal is determined by the effective range of the second receiving channel or/and the feedback channel may determine whether the processed test signal has an abnormality.
  • the feedback channel determines whether there is an abnormality in the processed test signal
  • the original test signal emitted by the first antenna has a transmit power of 30 dB
  • the isolation between the first antenna and the second antenna is 35 dB ⁇ 5 dB
  • the second antenna receives
  • the power of the test signal is 30dB-(35dB ⁇ 5dB).
  • the gain of the feedback channel is -10dB
  • the gain of the RF link is ⁇ 3.5dB.
  • the processed test signal is a normal signal, that is, the communication system works normally, and if the power of the processed test signal is not equal to the above value, It indicates that the processed test signal is an abnormal signal, that is, it is determined that there is an abnormality in the communication system at this time.
  • the second receiving channel determines whether there is an abnormality in the processed test signal
  • the original test signal emitted by the first antenna has a transmit power of 30 dB
  • the isolation between the first antenna and the second antenna is 35 dB ⁇ 5 dB
  • the second The power of the test signal received by the antenna is 30dB-(35dB ⁇ 5dB).
  • the gain of the second receiving channel is 10dB
  • the gain of the RF link is ⁇ 3.5dB
  • the processed test signal is a normal signal, that is, the communication system works normally, and if the power of the processed test signal is not equal to the above value, it indicates The processed test signal is an abnormal signal, that is, it is determined that there is an abnormality in the communication system at this time.
  • the test signal from the first transmit channel is transmitted by the first antenna of the radio remote circuit, the second antenna receives the test signal, and returns the received test signal to the second. Transmitting a channel, and transmitting a test signal received by the second transmitting channel to a feedback channel connected to the second receiving channel or/and the second transmitting channel, the second receiving channel or/and the feedback channel pair receiving The test signal is processed and it is determined whether there is an abnormality in the received test signal to determine whether the communication system has a fault.

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Abstract

本发明公开了一种通信故障检测方法、装置以及射频拉远电路，所述方法包括：通过射频拉远单元的第一天线对来自第一发射通道的测试信号进行发射；利用射频拉远单元的第二天线接收测试信号，并将接收到的测试信号返回至射频拉远单元的第二发射通道；将第二发射通道接收到的测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中；对第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断接收到的测试信号是否存在异常，以确定通信系统是否存在故障。通过上述方式，能够在不改变现有通信系统硬件的前提下，快速、低成本的对通信系统的故障进行检测。

Description

通信故障检测方法、装置以及射频拉远电路
【技术领域】
本发明涉及通信技术领域，特别是涉及一种通信故障检测方法、装置以及射频拉远电路。
【背景技术】
在现有的通信系统的应用中，由于外界干扰越来越多，用户对通信质量的要求也越来越高，因此，对通信系统进行外场故障排查已经成为一项非常重要的常规工作。目前对外场故障排查主要有两种方式，一种是小信号环回方式，另一种是采用仪器终端接收下行信号进行判断的方式。
小信号环回的方式主要是通过自发自收的方式检测基站内部射频链路是否异常，但是小信号环回自检方式检测范围小，仅仅局限于基站小信号链路检测，并不能对功放、双工器以及同通信系统进行客观检测。采用仪器设备或终端设备检测基站系统是否正常工作的方式，尽管能够对基站系统本身是否正常工作做出判断，但是人力成本高，而且，仪表资源的成本也很高，增加了额外的成本负担。
【发明内容】
本发明主要解决的技术问题是提供一种通信故障检测方法、装置以及射频拉远电路，能够在不改变现有通信系统硬件的前提下，快速、低成本的对通信系统的故障进行检测。
为解决上述技术问题，本发明第一方面提供一种通信故障检测方法，包括：通过射频拉远单元的第一天线对来自所述射频拉远单元的第一发射通道的测试信号进行发射；利用所述射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号返回至所述射频拉远单元的第二发射通道；将所述第二发射通道接收到的测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中；
对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。
结合第一方面，在第一方面的第一种可能实施方式中，所述对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障的步骤具体包括：通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；将处理后的测试信号与所述第一天线发出的测试信号进行对比，根据对比结果确定所述处理后的测试信号是否存在异常。
结合第一方面，在第一方面的第二种可能实施方式中，所述对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障的步骤具体包括：通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；获取所述处理后的测试信号的功率值；判断所述功率值是否在预设正常范围内，如果所述功率值不在所述正常范围内，则确定通信系统存在故障。
结合第一方面的第一至第二种任一可能实施方式，在第一方面的第三实施方式中，所述通过所述第二接收通道或/和反馈通道的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理的步骤包括:通过所述反馈通道接收所述测试信号；利用所述反馈通道的基带信号处理单元对所述接收到的测试信号进行处理，通过射频开关选择所述第二接收通道后，通过所述第二接收通道的射频链路对处理后的测试信号进行进一步处理。
结合第一方面的，在第一方面的第四实施方式中，所述通过射频拉远单元的第一天线对来自所述射频拉远单元的第一发射通道的测试信号进行发射的步骤包括：所述射频拉远单元的第一发射通道将基带信号类型的测试信号通过放大器进行放大；将放大后的测试信号经过环形器以及双工器进行处理，并将处理后的测试信号发送至所述第一天线；所述第一天线将所述处理后的测试信号转换为射频信号后进行发射。
为解决上述技术问题，本发明第二方面提供一种通信故障检测装置，所述通信故障检测装置包括信号发射单元、信号接收单元、信号发送单元以及信号处理单元，所述信号发射单元用于通过射频拉远单元的第一天线对来自所述射频拉远单元的第一发射通道的测试信号进行发射；所述信号接收单元用于利用所述射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号通过第二发射通道的双工器返回至第二发射通道；所述信号发送单元用于将所述第二发射通道接收到的测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中；所述信号处理单元对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。
结合第二方面，在第二方面的第一种可能实施方式中，所述信号处理单元具体用于通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；将处理后的测试信号与所述第一天线发出的测试信号进行对比，根据对比结果确定所述处理后的测试信号是否存在异常。
结合第二方面，在第二方面的第二种可能实施方式中，所述信号处理单元具体用于通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；获取所述处理后的测试信号的功率值；判断所述功率值是否在预设正常范围内，如果所述功率值不在所述正常范围内，则确定通信系统存在故障。
结合第二方面的第一至第二种任一可能实施方式，在第二方面的第三实施方式中，所述信号处理单元具体用于通过所述反馈接收所述测试信号；利用所述第反馈通道的基带信号处理单元对所述接收到的测试信号进行处理，再通过射频开关选择所述第二接收通道后，通过所述第二接收通道的射频链路对处理后的测试信号进行进一步处理。
结合第二方面，在第二方面的第四种可能实施方式中，所述信号发射单元具体用于通过所述射频拉远单元的第一发射通道将基带信号类型的测试信号通过放大器进行放大；将放大后的测试信号经过环形器以及双工器进行处理，并将处理后的测试信号发送至所述第一天线；通过所述第一天线将所述处理后的测试信号转换为射频信号后进行发射。
为解决上述技术问题，本发明第三方面提供一种通信故障检测装置，所述通信故障检测装置包括处理器以及存储器，
所述处理器用于通过射频拉远单元的第一天线对来自所述射频拉远单元的第一发射通道的测试信号进行发射；还用于利用所述射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号通过第二发射通道的双工器返回至第二发射通道；还用于将所述第二发射通道接收到的测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中；还用于对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障；
所述存储器用于，存储所述处理器中运行的程序、以及所述程序运行过程中产生的数据。
结合第三方面，在第三方面的第一种可能实施方式中，所述处理器具体用于通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；将处理后的测试信号与所述第一天线发出的测试信号进行对比，根据对比结果确定所述处理后的测试信号是否存在异常。
结合第三方面，在第三方面的第二种可能实施方式中，所述处理器具体用于通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；获取所述处理后的测试信号的功率值；判断所述功率值是否在预设正常范围内，如果所述功率值不在所述正常范围内，则确定通信系统存在故障。
结合第三方面的第一至第二种任一可能实施方式，在第三方面的第三实施方式中，所述处理器具体用于通过所述反馈接收所述测试信号；利用所述第反馈通道的基带信号处理单元对所述接收到的测试信号进行处理，再通过射频开关选择所述第二接收通道后，通过所述第二接收通道的射频链路对处理后的测试信号进行进一步处理。
结合第三方面，在第三方面的第四种可能实施方式中，所述处理器具体用于通过所述射频拉远单元的第一发射通道将基带信号类型的测试信号通过放大器进行放大；将放大后的测试信号经过环形器以及双工器进行处理，并将处理后的测试信号发送至所述第一天线；通过所述第一天线将所述处理后的测试信号转换为射频信号后进行发射。
为解决上述技术问题，本发明第四方面提供一种射频拉远电路，包括第一天线、与第一天线连接的第一发射通道及第一接收通道、连接所述第一发射通道的第一反馈通道、第二天线、与所述第二天线连接的第二发射通道及第二接收通道、连接所述第二发射通道的反馈通道、射频链路以及基带信号处理单元；其中，所述第一发射通道将测试信号输出至所述第一天线，并通过所述第一天线发射所述测试信号；所述第二发射通道通过所述第二天线接收所述测试信号，并输出至所述第二接收通道或/和与所述第二发射通道连接的所述反馈通道；所述第二接收通道或/和所述反馈通道将所述测试信号输出至射频链路以及基带信号处理单元，并利用所述射频链路以及基带信号处理单元对所述测试信号进行处理，并判断所述测试信号是否存在异常，以确定通信系统是否存在故障。
结合第四方面，在第四方面的第一种可能实施方式中，所述射频链路以及基带信号处理单元对所述接收到的测试信号进行处理，将处理后的测试信号与所述第一天线发出的测试信号进行对比，根据对比结果确定所述处理后的测试信号是否存在异常。。
结合第四方面，在第四方面的第二种可能实施方式中，所述射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；获取所述处理后的测试信号的功率值；判断所述功率值是否在预设正常范围内，如果所述功率值不在所述正常范围内，则确定通信系统存在故障。
结合第四方面的第一至第二种任一可能实施方式，在第四方面的第四实施方式中，其特征在于，所述反馈通道的基带信号处理单元对所述接收到的测试信号进行处理，通过射频开关选择所述第二接收通道后，所述第二通道通道的射频链路对处理后的测试信号进行进一步处理。
本发明的有益效果是：区别于现有技术的情况，本实施方式通过射频拉远单元的第一天线对来自第一发射通道的测试信号进行发射，利用射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号返回至第二发射通道，再将第二发射通道接收到的测试信号发送至与第二接收通道或/和与所述第二发射通道连接的反馈通道中，最后对所第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。通过上述自发自收以及逆向复用发射链路的检测方式，能够在不改变通信系统现有工作模式链路设计的前提下，完成对通信系统包括上下行信号质量、上下行接收机性能以及天线隔离度等整个发射、接收链路的自检，不仅能够有效降低通信系统外场故障排查的成本，而且通过自发自检的方式能够有效提高故障排查的效率，进而进一步提高通信系统的可维护性和可靠性。
【附图说明】
图1是本发明通信故障检测方法一实施方式的流程示意图；
图2是本发明通信故障检测装置一实施方式的结构示意图；
图3是本发明通信故障检测装置另一实施方式的结构示意图；
图4是本发明射频拉远电路一实施方式的结构示意图；
图5是本发明射频拉远电路另一实施方式的结构示意图。
【具体实施方式】
参阅图1，图1是本发明通信故障检测方法一实施方式的流程示意图。如图1所示，本实施方式的通信故障检测方法包括如下步骤：
101：通过射频拉远单元的第一天线对来自所述射频拉远单元的第一发射通道的测试信号进行发射。
射频拉远单元，即RRU，是将基带单元和射频单元分开的通信电路。通常情况下，是在远端将基带光信号转换成射频信号放大传送出去。
本实施方式中，为了实现对通信系统故障的检测，首先射频拉远单元的第一发射通道将基带信号类型的测试信号传输至该射频拉远单元第一天线，对应地，通过该射频拉远单元的第一天线对该测试信号进行发射。
其中，该测试信号可以为任何类型的通信信号，在此不做限定。
具体地，射频拉远单元的第一发射通道将第一频率的基带信号类型的测试信号经过放大器放大后，再经过环形器以及双工器到达第一天线，该第一天线将测试信号转换为射频信号后进行发射。
102：利用所述射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号返回至所述射频拉远单元的第二发射通道。
为了对发射的测试信号进行检测，通过该射频拉远单元的第二天线接收该测试信号。其中，该第二天线与第一天线的隔离度为预定值。如35dB±5dB等，只要保证测试信号能够正常发送接收即可，在此不做限定。
在通过第二天线接收到该测试信号后，通过射频拉远单元与第二天线连接的双工器将该测试信号返回至第二发射通道，通过复用双工器的方式可以避免增加其他元器件而带来的成本增加以及系统结构的复杂化。
103：将所述第二发射通道接收到的测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中。
由于接收到的信号为第一天线经过处理后的射频信号为了判断测试信号是否正常，需要对该测试信号进行解调以及进一步的处理，本实施方式中，采用的是复用与第二发射通道连接的第二接收通道或/和反馈通道的方式，因此，在第二发射通道接收到该测试信号后，进一步地将该测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中。
104：对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。
在一个具体的实施方式中，将该测试信号返回至该射频拉远单元的与第二天线连接的反馈通道中，通过该反馈通道的基带信号处理单元将测试信号进行解调得到基带信号，然后通过射频链路对解调后的基带信号进行进一步处理，如滤波等。
在另一个具体的实施方式中，将该测试信号首先返回至该射频拉远单元的与第二天线连接反馈通道中，先利用反馈通道的基带处理信号单元将测试信号进行解调得到基带信号，然后通过环形器以及与该反馈通道连接的射频开关选择第二接收通道，将该处理后的基带信号引入到第二接收通道，并通过该第二接收通道对解调后的测试信号进行进一步处理。其中，该射频开关为单刀双置开关。
在经过上述任一实施方式的处理后，进一步地通过该第二接收通道或/和反馈通道对测试信号进行异常判断，以进一步确定该通信系统是否存在异常。
其中，在一个具体的实施方中，通过第二接收通道或/和反馈通道将处理后的测试信号与第一天线发射的来自第一发射通道的原始测试信号进行比对，根据比对结果确定该处理后的测试信号是否存在异常。例如，判断该解调后的测试信号与原始发射的测试信号是否相同或者误差是否在有效范围内，如果相同或误差在有效范围内，则该解调后的测试信号为正常信号，即该通信系统为正常工作状态。如果解调后的测试信号与原始发射的测试信号不同或误差超出有效范围，则确定该解调后的测试信号异常，进一步确定该通信系统存在异常。
在另一个具体的实施方式中，也可以通过对第二接收通道或/和反馈通道将处理后的测试信号的功率进行有效范围的判断进而确定该处理后的测试信号是否存在异常。
例如，通过反馈通道判断处理后的测试信号是否存在异常时，假设射频拉远单元通过第一天线发出的原始测试信号的发射功率为30dB，第一天线和第二天线的隔离度为35dB±5dB，那么第二天线接收到的测试信号的功率为30dB-（35dB±5dB），在经过反馈通道处理时，反馈通道的增益为-10dB，射频链路增益为±3.5dB，那么最后得到的处理后的测试信号的功率应该为30dB-（35dB±5dB）-（-10dB）-（±3.5dB）=-15dBm±8.5dB。如果最终得到处理后的测试信号的功率为-15dBm±8.5dB，那么该处理后的测试信号为正常信号，即该通信系统正常工作，如果该处理后的测试信号的功率不等于上述数值，则表示该处理后的测试信号为异常信号，即确定此时通信系统存在异常。
例如，通过第二接收通道判断处理后的测试信号是否存在异常时，假设射频拉远单元通过第一天线发出的原始测试信号的发射功率为30dB，第一天线和第二天线的隔离度为35dB±5dB，那么第二天线接收到的测试信号的功率为30dB-（35dB±5dB），在经过第二接收通道处理时，第二接收通道的增益为10dB，射频链路增益为±3.5dB，那么最后得到的处理后的测试信号的功率应该为30dB-（35dB±5dB）-（10dB）-（±3.5dB）=5dBm±8.5dB。如果最终得到处理后的测试信号的功率为5dBm±8.5dB，那么该处理后的测试信号为正常信号，即该通信系统正常工作，如果该处理后的测试信号的功率不等于上述数值，则表示该处理后的测试信号为异常信号，即确定此时通信系统存在异常。
区别于现有技术，本实施方式通过射频拉远单元的第一天线对来自第一发射通道的测试信号进行发射，利用射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号返回至第二发射通道，再将第二发射通道接收到的测试信号发送至与第二接收通道或/和与所述第二发射通道连接的反馈通道中，最后对所第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。通过上述自发自收以及逆向复用发射链路的检测方式，能够在不改变通信系统现有工作模式链路设计的前提下，完成对通信系统包括上下行信号质量、上下行接收机性能以及天线隔离度等整个发射、接收链路的自检，不仅能够有效降低通信系统外场故障排查的成本，而且通过自发自检的方式能够有效提高故障排查的效率，进而进一步提高通信系统的可维护性和可靠性。
参阅图2，图2是本发明通信故障检测装置一实施方式的结构示意图。如图2所示，本实施方式的通信故障检测装置包括信号发射单元201、信号接收单元202、信号发送单元203以及信号处理单元204，
信号发射单元201用于通过射频拉远单元的第一天线对来自所述射频拉远单元的第一发射通道的测试信号进行发射。
射频拉远单元，即RRU，是将基带单元和射频单元分开的通信电路。通常情况下，是在远端将基带光信号转换成射频信号放大传送出去。
本实施方式中，为了实现对通信系统故障的检测，首先信号发射单元201通过射频拉远单元的第一发射通道将基带信号类型的测试信号传输至该射频拉远单元第一天线，对应地，通过该射频拉远单元的第一天线对该测试信号进行发射。其中，该测试信号可以为任何类型的通信信号，在此不做限定。
具体地，信号发射单元201的第一发射通道将第一频率的基带信号类型的测试信号经过放大器放大后，再经过环形器以及双工器到达第一天线，该第一天线将测试信号转换为射频信号后进行发射。
信号接收单元202用于利用所述射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号通过第二发射通道的双工器返回至第二发射通道。
其中，该第二天线与第一天线的隔离度为预定值。如35dB±5dB等，只要保证测试信号能够正常发送接收即可，在此不做限定。
具体的，信号接收单元202在通过第二天线接收到该测试信号后，通过射频拉远单元与第二天线连接的双工器将该测试信号返回至第二发射通道，通过复用双工器的方式可以避免增加其他元器件而带来的成本增加以及系统结构的复杂化。
信号发送单元203用于将所述第二发射通道接收到的测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中。
由于接收到的信号为第一天线经过处理后的射频信号为了判断测试信号是否正常，需要对该测试信号进行解调以及进一步的处理，本实施方式中，采用的是复用与第二发射通道连接的第二接收通道或/和反馈通道的方式，因此，信号发送单元203在第二发射通道接收到该测试信号后，进一步地将该测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中。
信号处理单元204对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。
在一个具体的实施方式中，信号处理单元204将该测试信号返回至该射频拉远单元的与第二天线连接的反馈通道中，通过该反馈通道的基带信号处理单元将测试信号进行解调得到基带信号，然后通过射频链路对解调后的基带信号进行进一步处理，如滤波等。
在另一个具体的实施方式中，信号处理单元204将该测试信号首先返回至该射频拉远单元的与第二天线连接反馈通道中，先利用反馈通道的基带处理信号单元将测试信号进行解调得到基带信号，然后通过环形器以及与该反馈通道连接的射频开关选择第二接收通道，将该处理后的基带信号引入到第二接收通道，并通过该第二接收通道对解调后的测试信号进行进一步处理。其中，该射频开关为单刀双置开关。
在经过上述任一实施方式的处理后，信号处理单元204进一步地通过该第二接收通道或/和反馈通道对测试信号进行异常判断，以进一步确定该通信系统是否存在异常。
其中，在一个具体的实施方中，信号处理单元204通过第二接收通道或/和反馈通道将处理后的测试信号与第一天线发射的来自第一发射通道的原始测试信号进行比对，根据比对结果确定该处理后的测试信号是否存在异常。例如，判断该解调后的测试信号与原始发射的测试信号是否相同或者误差是否在有效范围内，如果相同或误差在有效范围内，则该解调后的测试信号为正常信号，即该通信系统为正常工作状态。如果解调后的测试信号与原始发射的测试信号不同或误差超出有效范围，则确定该解调后的测试信号异常，进一步确定该通信系统存在异常。
在另一个具体的实施方式中，信号处理单元204也可以通过对第二接收通道或/和反馈通道将处理后的测试信号的功率进行有效范围的判断进而确定该处理后的测试信号是否存在异常。
区别于现有技术，本实施方式的信号发射单元通过射频拉远单元的第一天线对来自第一发射通道的测试信号进行发射，信号接收单元利用射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号返回至第二发射通道，信号发送单元将第二发射通道接收到的测试信号发送至与第二接收通道或/和与所述第二发射通道连接的反馈通道中，最后信号处理单元对所第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。通过上述自发自收以及逆向复用发射链路的检测方式，能够在不改变通信系统现有工作模式链路设计的前提下，完成对通信系统包括上下行信号质量、上下行接收机性能以及天线隔离度等整个发射、接收链路的自检，不仅能够有效降低通信系统外场故障排查的成本，而且通过自发自检的方式能够有效提高故障排查的效率，进而进一步提高通信系统的可维护性和可靠性。
参阅图3，图3是本发明通信故障检测装置另一实施方式的结构示意图。如图3所示，本实施方式的通信故障检测装置包括处理器301以及存储器302。处理器301以及存储器302通过总线303耦合在一起，其中总线303除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线303。
处理器301用于通过射频拉远单元的第一天线对来自所述射频拉远单元的第一发射通道的测试信号进行发射。
射频拉远单元，即RRU，是将基带单元和射频单元分开的通信电路。通常情况下，是在远端将基带光信号转换成射频信号放大传送出去。
本实施方式中，为了实现对通信系统故障的检测，首先处理器301通过射频拉远单元的第一发射通道将基带信号类型的测试信号传输至该射频拉远单元第一天线，对应地，通过该射频拉远单元的第一天线对该测试信号进行发射。其中，该测试信号可以为任何类型的通信信号，在此不做限定。
具体地，处理器301的第一发射通道将第一频率的基带信号类型的测试信号经过放大器放大后，再经过环形器以及双工器到达第一天线，该第一天线将测试信号转换为射频信号后进行发射。
处理器301还用于利用所述射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号通过第二发射通道的双工器返回至第二发射通道。
其中，该第二天线与第一天线的隔离度为预定值。如35dB±5dB等，只要保证测试信号能够正常发送接收即可，在此不做限定。
具体的，处理器301在通过第二天线接收到该测试信号后，通过射频拉远单元与第二天线连接的双工器将该测试信号返回至第二发射通道，通过复用双工器的方式可以避免增加其他元器件而带来的成本增加以及系统结构的复杂化。
处理器301还用于将所述第二发射通道接收到的测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中。
由于接收到的信号为第一天线经过处理后的射频信号为了判断测试信号是否正常，需要对该测试信号进行解调以及进一步的处理，本实施方式中，采用的是复用与第二发射通道连接的第二接收通道或/和反馈通道的方式，因此，处理器301在第二发射通道接收到该测试信号后，进一步地将该测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中。
处理器301对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。
在一个具体的实施方式中，处理器301将该测试信号返回至该射频拉远单元的与第二天线连接的反馈通道中，通过该反馈通道的基带信号处理单元将测试信号进行解调得到基带信号，然后通过射频链路对解调后的基带信号进行进一步处理，如滤波等。
在另一个具体的实施方式中，处理器301将该测试信号首先返回至该射频拉远单元的与第二天线连接反馈通道中，先利用反馈通道的基带处理信号单元将测试信号进行解调得到基带信号，然后通过环形器以及与该反馈通道连接的射频开关选择第二接收通道，将该处理后的基带信号引入到第二接收通道，并通过该第二接收通道对解调后的测试信号进行进一步处理。其中，该射频开关为单刀双置开关。
在经过上述任一实施方式的处理后，处理器301进一步地通过该第二接收通道或/和反馈通道对测试信号进行异常判断，以进一步确定该通信系统是否存在异常。
其中，在一个具体的实施方中，处理器301通过第二接收通道或/和反馈通道将处理后的测试信号与第一天线发射的来自第一发射通道的原始测试信号进行比对，根据比对结果确定该处理后的测试信号是否存在异常。例如，判断该解调后的测试信号与原始发射的测试信号是否相同或者误差是否在有效范围内，如果相同或误差在有效范围内，则该解调后的测试信号为正常信号，即该通信系统为正常工作状态。如果解调后的测试信号与原始发射的测试信号不同或误差超出有效范围，则确定该解调后的测试信号异常，进一步确定该通信系统存在异常。
在另一个具体的实施方式中，处理器301也可以通过对第二接收通道或/和反馈通道将处理后的测试信号的功率进行有效范围的判断进而确定该处理后的测试信号是否存在异常。
存储器302用于存储所述处理器中运行的程序、以及所述程序运行过程中产生的数据。可以包括只读存储器和随机存取存储器，并向处理器301提供指令和数据。存储器302的一部分还可以包括非易失性随机存取存储器（NVRAM）。
存储器302存储了如下的元素，可执行单元或者数据结构，或者它们的子集，或者它们的扩展集:
操作指令：包括各种操作指令，用于实现各种操作。
操作系统：包括各种系统程序，用于实现各种基础业务以及处理基于硬件的任务。
在本发明实施例中，处理器301通过调用存储器302存储的操作指令（该操作指令可存储在操作系统中），来执行上述操作。
处理器301还可以称为CPU（Central Processing Unit，中央处理单元）。存储器302可以包括只读存储器和随机存取存储器，并向处理器901提供指令和数据。存储器302的一部分还可以包括非易失性随机存取存储器（NVRAM）。
上述本发明实施例揭示的方法可以应用于处理器301中，或者由处理器301实现。处理器301可能是一种集成电路芯片，具有信号的处理能力。处理器301也可以和产生第一基带信号和第二基带信号的芯片集成在一起，并且可以集成比较器和对第一基带，第二基带的移相功能。
在实现过程中，上述方法的各步骤可以通过处理器301中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器301可以是通用处理器、数字信号处理器（DSP）、专用集成电路（ASIC）、现成可编程门阵列（FPGA）或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件单元组合执行完成。软件单元可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器302，处理器301读取存储器302中的信息，结合其硬件完成上述方法的步骤。
区别于现有技术，本实施方式的处理器通过射频拉远单元的第一天线对来自第一发射通道的测试信号进行发射，利用射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号返回至第二发射通道，将第二发射通道接收到的测试信号发送至与第二接收通道或/和与所述第二发射通道连接的反馈通道中，最后对所第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。通过上述自发自收以及逆向复用发射链路的检测方式，能够在不改变通信系统现有工作模式链路设计的前提下，完成对通信系统包括上下行信号质量、上下行接收机性能以及天线隔离度等整个发射、接收链路的自检，不仅能够有效降低通信系统外场故障排查的成本，而且通过自发自检的方式能够有效提高故障排查的效率，进而进一步提高通信系统的可维护性和可靠性。
参阅图4，图4是本发明射频拉远单元一实施方式的结构示意图。
射频拉远电路是将基带单元和射频单元分开的通信电路。通常情况下，是在远端将基带光信号转换成射频信号放大传送出去。
如图4所述，本实施方式的射频拉远电路包括第一天线401、与第一天线连接的第一发射通道402及第一接收通道403、连接第一发射通道402的第一反馈通道404、第二天线405、与第二天线连接的第二发射通道406及第二接收通道407、连接第二发射通道406的反馈通道408，还包括射频链路（图中未示出）以及基带信号处理单元（图中未示出）。
其中，第一发射通道402将测试信号输出至所述第一天线401，并通过第一天线401发射所述测试信号。第二发射通道406通过所述第二天线401接收所述测试信号，并输出至所述第二接收通道407或/和反馈通道408；第二接收通道407或/和反馈通道408将测试信号输出至射频链路以及基带信号处理单元，射频链路以及基带信号处理单元对所述测试信号进行处理，并判断所述测试信号是否存在异常，以确定通信系统是否存在故障。
具体地，本实施方式中，为了实现对通信系统故障的检测，首先射频拉远电路的第一发射通道402将基带信号类型的测试信号传输至第一天线401，对应地，第一天线401对该测试信号进行发射。
其中，该测试信号可以为任何类型的通信信号，在此不做限定。
具体地，第一发射通道402将第一频率的基带信号类型的测试信号经过第一放大器409放大后，再经过第一环形器410以及第一双工器411到达第一天线401，该第一天线401将测试信号转换为射频信号后进行发射。
第二天线405接收测试信号，并将接收到的测试信号返回至第二发射通道406。其中，该第二天线与第一天线的隔离度为预定值。如35dB±5dB等，只要保证测试信号能够正常发送接收即可，在此不做限定。
具体地，第二天线405接收到该测试信号后，通过射频拉远单元与第二天线405连接的第二双工器412将该测试信号返回至第二发射通道，通过复用第二双工器412的方式可以避免增加其他元器件而带来的成本增加以及系统结构的复杂化。
第二发射通道406接收到该测试信号后，进一步地将该测试信号发送至第二接收通道407或/和与第二发射通道406连接的反馈通道408中。
第二接收通道407或/和反馈通道408接收到的测试信号进行处理，并通过射频链路以及基带信号处理单元并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。
在一个具体的实施方式中，第二发射通道406将该测试信号返回至与第二发射通道406连接的反馈通道408中，通过该反馈通道408的基带信号处理单元将测试信号进行解调得到基带信号，然后通过射频链路对解调后的基带信号进行进一步处理，如滤波等。
在另一个具体的实施方式中，如图5所示，第二发射通道506将该测试信号首先返回至与第二发射通道506连接反馈通道508中，先利用反馈通道508的基带处理信号单元将测试信号进行解调得到基带信号，然后通过第二环形器513以及与该反馈通道连接的射频开关414选择第二接收通道507，将该处理后的基带信号引入到第二接收通道507中，并通过该第二接收通道507对解调后的测试信号进行进一步处理。其中，该射频开关514为单刀双置开关。
在经过上述任一实施方式的处理后，第二接收通道或/和反馈通道对测试信号进行异常判断，以进一步确定该通信系统是否存在异常。
其中，在上述任一个具体的实施方中，第二接收通道或/和反馈通道将处理后的测试信号与第一天线发射的来自第一发射通道的原始测试信号进行比对，根据比对结果确定该处理后的测试信号是否存在异常。例如，判断该解调后的测试信号与原始发射的测试信号是否相同或者误差是否在有效范围内，如果相同或误差在有效范围内，则该解调后的测试信号为正常信号，即该通信系统为正常工作状态。如果解调后的测试信号与原始发射的测试信号不同或误差超出有效范围，则确定该解调后的测试信号异常，进一步确定该通信系统存在异常。
在上述任一具体的实施方式中，也可以通过对第二接收通道或/和反馈通道将处理后的测试信号的功率进行有效范围的判断进而确定该处理后的测试信号是否存在异常。
例如，反馈通道判断处理后的测试信号是否存在异常时，假设第一天线发出的原始测试信号的发射功率为30dB，第一天线和第二天线的隔离度为35dB±5dB，那么第二天线接收到的测试信号的功率为30dB-（35dB±5dB），在经过反馈通道处理时，反馈通道的增益为-10dB，射频链路增益为±3.5dB，那么最后得到的处理后的测试信号的功率应该为30dB-（35dB±5dB）-（-10dB）-（±3.5dB）=-15dBm±8.5dB。如果最终得到处理后的测试信号的功率为-15dBm±8.5dB，那么该处理后的测试信号为正常信号，即该通信系统正常工作，如果该处理后的测试信号的功率不等于上述数值，则表示该处理后的测试信号为异常信号，即确定此时通信系统存在异常。
例如，第二接收通道判断处理后的测试信号是否存在异常时，假设第一天线发出的原始测试信号的发射功率为30dB，第一天线和第二天线的隔离度为35dB±5dB，那么第二天线接收到的测试信号的功率为30dB-（35dB±5dB），在经过第二接收通道处理时，第二接收通道的增益为10dB，射频链路增益为±3.5dB，那么最后得到的处理后的测试信号的功率应该为30dB-（35dB±5dB）-（10dB）-（±3.5dB）=5dBm±8.5dB。如果最终得到处理后的测试信号的功率为5dBm±8.5dB，那么该处理后的测试信号为正常信号，即该通信系统正常工作，如果该处理后的测试信号的功率不等于上述数值，则表示该处理后的测试信号为异常信号，即确定此时通信系统存在异常。
区别于现有技术，本实施方式通过射频拉远电路的第一天线对来自第一发射通道的测试信号进行发射，第二天线接收所述测试信号，并将接收到的测试信号返回至第二发射通道，再将第二发射通道接收到的测试信号发送至与第二接收通道或/和与所述第二发射通道连接的反馈通道中，第二接收通道或/和反馈通道对接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。通过上述自发自收以及逆向复用发射链路的检测方式，能够在不改变通信系统现有工作模式链路设计的前提下，完成对通信系统包括上下行信号质量、上下行接收机性能以及天线隔离度等整个发射、接收链路的自检，不仅能够有效降低通信系统外场故障排查的成本，而且通过自发自检的方式能够有效提高故障排查的效率，进而进一步提高通信系统的可维护性和可靠性。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (19)

  1. 一种通信故障检测方法，其特征在于，所述通信故障检测方法包括：
    通过射频拉远单元的第一天线对来自所述射频拉远单元的第一发射通道的测试信号进行发射；
    利用所述射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号返回至所述射频拉远单元的第二发射通道；
    将所述第二发射通道接收到的测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中；
    对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。
  2. 根据权利要求1所述的通信故障检测方法，其特征在于，所述对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障的步骤具体包括：
    通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；
    将处理后的测试信号与所述第一天线发出的测试信号进行对比，根据对比结果确定所述处理后的测试信号是否存在异常。
  3. 根据权利要求1所述的通信故障检测方法，其特征在于，所述对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障的步骤具体包括：
    通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；
    获取所述处理后的测试信号的功率值；
    判断所述功率值是否在预设正常范围内，如果所述功率值不在所述正常范围内，则确定通信系统存在故障。
  4. 根据权利要求2或3所述的通信故障检测方法，其特征在于，所述通过所述第二接收通道或/和反馈通道的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理的步骤包括:
    通过所述反馈通道接收所述测试信号；
    利用所述反馈通道的基带信号处理单元对所述接收到的测试信号进行处理，通过射频开关选择所述第二接收通道后，通过所述第二接收通道的射频链路对处理后的测试信号进行进一步处理。
  5. 根据权利要求1所述的通信故障检测方法，其特征在于，所述通过射频拉远单元的第一天线对来自所述射频拉远单元的第一发射通道的测试信号进行发射的步骤包括：
    所述射频拉远单元的第一发射通道将基带信号类型的测试信号通过放大器进行放大；
    将放大后的测试信号经过环形器以及双工器进行处理，并将处理后的测试信号发送至所述第一天线；
    所述第一天线将所述处理后的测试信号转换为射频信号后进行发射。
  6. 一种通信故障检测装置，其特征在于，所述通信故障检测装置包括信号发射单元、信号接收单元、信号发送单元以及信号处理单元，
    所述信号发射单元用于通过射频拉远单元的第一天线对来自所述射频拉远单元的第一发射通道的测试信号进行发射；
    所述信号接收单元用于利用所述射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号通过第二发射通道的双工器返回至第二发射通道；
    所述信号发送单元用于将所述第二发射通道接收到的测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中；
    所述信号处理单元对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障。
  7. 根据权利要求6所述的通信故障检测装置，其特征在于，所述信号处理单元具体用于通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；将处理后的测试信号与所述第一天线发出的测试信号进行对比，根据对比结果确定所述处理后的测试信号是否存在异常。
  8. 根据权利要求6所述的通信故障检测装置，其特征在于，所述信号处理单元具体用于通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；获取所述处理后的测试信号的功率值；判断所述功率值是否在预设正常范围内，如果所述功率值不在所述正常范围内，则确定通信系统存在故障。
  9. 根据权利要求7或8所述的通信故障检测装置，其特征在于，所述信号处理单元具体用于通过所述反馈接收所述测试信号；利用所述第反馈通道的基带信号处理单元对所述接收到的测试信号进行处理，再通过射频开关选择所述第二接收通道后，通过所述第二接收通道的射频链路对处理后的测试信号进行进一步处理。
  10. 根据权利要求6所述的通信故障检测装置，其特征在于，所述信号发射单元具体用于
    通过所述射频拉远单元的第一发射通道将基带信号类型的测试信号通过放大器进行放大；
    将放大后的测试信号经过环形器以及双工器进行处理，并将处理后的测试信号发送至所述第一天线；
    通过所述第一天线将所述处理后的测试信号转换为射频信号后进行发射。
  11. 一种通信故障检测装置，其特征在于，所述通信故障检测装置包括处理器以及存储器，
    所述处理器用于通过射频拉远单元的第一天线对来自所述射频拉远单元的第一发射通道的测试信号进行发射；还用于利用所述射频拉远单元的第二天线接收所述测试信号，并将接收到的测试信号通过第二发射通道的双工器返回至第二发射通道；还用于将所述第二发射通道接收到的测试信号发送至与所述射频拉远单元的第二接收通道或/和与所述第二发射通道连接的反馈通道中；还用于对所述第二接收通道或/和反馈通道接收到的测试信号进行处理，并判断所述接收到的测试信号是否存在异常，以确定通信系统是否存在故障；
    所述存储器用于，存储所述处理器中运行的程序、以及所述程序运行过程中产生的数据。
  12. 根据权利要求11所述的通信故障检测装置，其特征在于，所述处理器具体用于通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；将处理后的测试信号与所述第一天线发出的测试信号进行对比，根据对比结果确定所述处理后的测试信号是否存在异常。
  13. 根据权利要求11所述的通信故障检测装置，其特征在于，所述处理器具体用于通过所述射频拉远单元的射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；获取所述处理后的测试信号的功率值；判断所述功率值是否在预设正常范围内，如果所述功率值不在所述正常范围内，则确定通信系统存在故障。
  14. 根据权利要求12或13所述的通信故障检测装置，其特征在于，所述处理器具体用于通过所述反馈接收所述测试信号；利用所述第反馈通道的基带信号处理单元对所述接收到的测试信号进行处理，再通过射频开关选择所述第二接收通道后，通过所述第二接收通道的射频链路对处理后的测试信号进行进一步处理。
  15. 根据权利要求11所述的通信故障检测装置，其特征在于，所述处理器具体用于
    通过所述射频拉远单元的第一发射通道将基带信号类型的测试信号通过放大器进行放大；
    将放大后的测试信号经过环形器以及双工器进行处理，并将处理后的测试信号发送至所述第一天线；
    通过所述第一天线将所述处理后的测试信号转换为射频信号后进行发射。
  16. 一种射频拉远电路，其特征在于，包括第一天线、与第一天线连接的第一发射通道及第一接收通道、连接所述第一发射通道的第一反馈通道、第二天线、与所述第二天线连接的第二发射通道及第二接收通道、连接所述第二发射通道的反馈通道、射频链路以及基带信号处理单元；其中，
    所述第一发射通道将测试信号输出至所述第一天线，并通过所述第一天线发射所述测试信号；所述第二发射通道通过所述第二天线接收所述测试信号，并输出至所述第二接收通道或/和与所述第二发射通道连接的所述反馈通道；所述第二接收通道或/和所述反馈通道将所述测试信号输出至射频链路以及基带信号处理单元，并利用所述射频链路以及基带信号处理单元对所述测试信号进行处理，并判断所述测试信号是否存在异常，以确定通信系统是否存在故障。
  17. 根据权利要求16所述的射频拉远电路，其特征在于，所述射频链路以及基带信号处理单元对所述接收到的测试信号进行处理，将处理后的测试信号与所述第一天线发出的测试信号进行对比，根据对比结果确定所述处理后的测试信号是否存在异常。
  18. 根据权利要求16所述的射频拉远电路，其特征在于，所述射频链路以及基带信号处理单元对所述接收到的测试信号进行处理；获取所述处理后的测试信号的功率值；判断所述功率值是否在预设正常范围内，如果所述功率值不在所述正常范围内，则确定通信系统存在故障。
  19. 根据权利要求17或18所述的射频拉远电路，其特征在于，所述反馈通道的基带信号处理单元对所述接收到的测试信号进行处理，通过射频开关选择所述第二接收通道后，所述第二通道通道的射频链路对处理后的测试信号进行进一步处理。
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CN113206697A (zh) * 2021-03-19 2021-08-03 中国电子科技集团公司第二十九研究所 一种宽带射频接收处理系统装置及其自检方法
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CN114143819A (zh) * 2021-11-30 2022-03-04 中信科移动通信技术股份有限公司 射频拉远系统及射频信号故障自检测方法
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CN114325227A (zh) * 2021-12-21 2022-04-12 南京长峰航天电子科技有限公司 一种射频阵列馈电系统故障定位方法及系统
CN114325227B (zh) * 2021-12-21 2024-01-23 南京长峰航天电子科技有限公司 一种射频阵列馈电系统故障定位方法及系统

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