CN107634809B - Self-aging test method and system for remote radio unit - Google Patents
Self-aging test method and system for remote radio unit Download PDFInfo
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Abstract
The invention discloses a method and a system for self-aging test of a radio remote unit, which are characterized in that an aging test mode setting device, an RRU to be aged and a power load are arranged, an aging test software module is arranged in the RRU to be aged, the RRU to be aged is set to enter an aging test mode through the aging test mode setting device, then a clock reference signal is generated based on the aging test software module, a test data source file is loaded, a time slot switching control number is generated, AXC data is configured, a radio frequency channel and a working state monitoring task are opened, baseband data source data are output to the power load through a downlink radio frequency output port, aging test data recording is carried out, and whether the RRU aging test is passed or not is judged. The invention can realize batch aging of the radio remote units, adopts an autologous aging mode, greatly simplifies the complexity of an aging system of the radio remote units, realizes the improvement of the capacity and has important market value.
Description
Technical Field
The invention relates to a radio remote unit aging technology in the technical field of mobile communication, in particular to a radio remote unit self-aging method and a radio remote unit self-aging system.
Background
In the field of mobile communication technology, the general terminology of a base station system is described as follows:
1. RRU (radio Remote Unit) radio Remote unit
2. BBU (base Band Unit) baseband processing unit
3. LTE (Long Term evolution) long Term evolution plan
4. TD-LTE (time Division Long Term evolution)
5. FDD-LTE (frequency Division Duplex Long Term evolution) frequency Division Duplex
6. eNode B (Evolved NodeB) Evolved Node B
7. Interface of IR (interface between the RRU and the BBU) BBU and RRU
8. E-TM3.1(Evolved UTRA Test Model 3.1) Evolved UTRA Test mode 3.1
9. AXC (antenna Carrier) antenna carrier
With the acceleration of 4G LTE network construction, a distributed base station architecture composed of an indoor BBU and an outdoor RRU is widely prevalent, and network construction scales of operators on devices of two systems, i.e., TDD-LTE and FDD-LTE, are quite large, and increasingly fast network construction delivery speeds are required. Huge equipment demand and network building speed requirements put forward severe requirements on the capacity of equipment manufacturers, Radio Remote Units (RRUs) are used as outdoor equipment and need good environmental adaptability, most of the RRUs are installed at the positions of a roof, a tower top and the like far away from a machine room, and once a fault occurs, access type fault troubleshooting and maintenance can be extremely difficult to perform near the equipment; the aging test aims at performing power-on and signal-adding test on the RRU before the RRU is installed and used in engineering, so that each module and each part in the equipment can work at full load for a certain time, and the defects of the equipment are exposed before the equipment leaves a factory, thereby ensuring the factory quality of the equipment and reducing the engineering maintenance burden caused by quality problems after the equipment is delivered.
In the prior art, two common methods are used for RRU aging: one is to build a complete eNodeB system as an aging platform, connect the BBU and the RRUs through optical fibers, and send data and configuration information to the multi-stage cascaded RRUs through IR interfaces of the BBU, so that the RRUs are in a signal transmission state to age. The method is limited by the resource capacity (such as limited IR interface number of BBU, limited optical interface rate, limited AXC resource mapping and the like) and configuration complexity (such as huge configuration workload of a complete eNodeB system, need of professional knowledge of a related wireless base station system and the like) of the BBU, and along with the improvement of RRU capacity, a considerable number of BBUs are needed to build the eNodeB system for aging test, and mass products are difficult to realize; and the other method is to simulate partial functions of the BBU, a baseband data transceiver is designed to serve as an aging tool, and the RRU aging is realized by means of the RRU cascading function.
Disclosure of Invention
The invention aims to provide a technical scheme for self-aging of a radio remote unit, which aims to reduce the complexity of an aging test system of the radio remote unit, break through the bottleneck of capacity, utilize the self resources of the radio remote unit and match with a proper selectable configuration design on the basis of not increasing the hardware cost, and realize the batch self-aging test of the radio remote unit.
The technical scheme of the invention is to provide a self-aging test method of a radio remote unit, which comprises the steps of setting an aging test mode setting device, an RRU to be aged and a power load, wherein an aging test software module is arranged in the RRU to be aged, and the RRU is the radio remote unit; the RRU to be aged is connected with a power load, and the aging test mode setting device is connected with a debugging serial port of the RRU to be aged;
the RRU to be aged is set to enter an aging test mode through an aging test mode setting device, and then the following processing is executed based on an aging test software module,
detecting and judging whether the RRU to be aged enters an aging test mode;
after the RRU enters an aging test mode through an aging test mode setting unit, generating a clock reference signal to a clock chip of the RRU single board to provide a working clock;
loading a data source file for testing from a flash memory of the RRU to be aged to a data sending module of the RRU to be aged, and generating a time slot switching control signal according to the loaded data source type information;
after a data source is generated, initializing a relevant module of the RRU to be aged, configuring AXC data, opening a radio frequency channel and a working state monitoring task, outputting baseband data source data to a power load through a downlink radio frequency output port, and recording aging test data;
and according to the data information recorded by the aging test, counting power information, state monitoring information and state alarm information of the RRU aging test, comprehensively judging whether the RRU aging test passes or not, and supporting to lead out the aging test record through a debugging network port of the RRU to be aged.
Also, the burn-in test mode setting means is implemented using an RJ45 connector.
And moreover, a debugging and testing computer is arranged, the debugging and testing computer is connected with a debugging network port of the RRU to be aged, and aging testing data and testing results of the RRU are led out to the debugging and testing computer through the debugging network port and are used for storing and analyzing the testing data.
And when 3 conditions of power information, state monitoring information and state alarm information of the aging test are all met, judging that the RRU aging test is passed.
And the method is used for carrying out batch aging test on the plurality of RRUs to be aged.
The invention also provides a self-aging test system of the remote radio unit, which comprises an aging test mode setting device, the RRU to be aged and a power load, wherein the RRU to be aged is provided with an aging test software module, and the RRU is the remote radio unit; the RRU to be aged is connected with a power load;
the device comprises an aging test mode setting device and a debugging serial port setting device, wherein the aging test mode setting device is used for setting the RRU to be aged to enter an aging test mode;
the aging test software module comprises an aging test mode setting unit, a clock generating unit, a data source and time slot generating unit, an aging test data recording unit and an aging test result judging unit;
the aging test mode setting unit is used for detecting and judging whether the RRU to be aged enters an aging test mode;
the clock generation unit is used for generating a clock reference signal to a clock chip of the RRU single board after the RRU enters the aging test mode through the aging test mode setting unit and providing a working clock;
the device comprises a data source and time slot generating unit, a data source and time slot generating unit and a time slot switching control unit, wherein the data source and time slot generating unit is used for loading a data source file for testing from a flash memory of the RRU to be aged to a data sending module of the RRU to be aged and generating a time slot switching control signal according to the loaded type information of the data source;
the aging test data recording unit is used for initializing a relevant module of the RRU to be aged after a data source is generated, then configuring AXC data, opening a radio frequency channel and a working state monitoring task, outputting baseband data source data to a power load through a downlink radio frequency output port, and recording aging test data;
and the aging test result judging unit is used for counting power information, state monitoring information and state alarm information of the RRU aging test according to the data information recorded by the aging test, comprehensively judging whether the RRU aging test passes or not, and supporting the derivation of the aging test record through a debugging network port of the RRU to be aged.
Also, the burn-in test mode setting means is implemented using an RJ45 connector.
And moreover, a debugging and testing computer is arranged, the debugging and testing computer is connected with a debugging network port of the RRU to be aged, and aging testing data and testing results of the RRU are led out to the debugging and testing computer through the debugging network port and are used for storing and analyzing the testing data.
And when 3 conditions of power information, state monitoring information and state alarm information of the aging test are all met, judging that the RRU aging test is passed.
And when a plurality of RRUs to be aged are subjected to batch aging test, only one aging test mode setting device is adopted, and the RRUs to be aged are set to enter an aging test mode in turn.
The invention greatly simplifies the complexity of the radio remote unit aging test system by utilizing the self parts of the equipment and matching with a proper selectable configuration design, and can solve the capacity bottleneck caused by the complex structure, high test cost and the like of the traditional radio remote unit aging test system on the basis of not increasing the hardware cost. The invention has the following advantages and positive effects:
1. the batch aging of the radio remote units can be realized, the complexity of an aging system of the radio remote units is greatly simplified by adopting an autologous aging method, additional auxiliary test resources are not required to be added, only existing resources in the radio remote units are used, and the improvement of the productivity can be realized by adding a small amount of auxiliary design, so that the radio remote unit aging system has important market value;
2. the mixed connection aging of the remote radio units with different standards, different frequency bands and different channel numbers can be simply realized, an autologous aging scheme is adopted, the method does not depend on an external test platform and configuration operation, and the number of the simultaneously aged remote radio units is not limited.
Drawings
Fig. 1 is a block diagram of an auto-aging test system of a remote radio unit according to an embodiment of the present invention.
Fig. 2 is a flowchart of the working procedure of the self-aging testing method of the remote radio unit according to the embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1, an embodiment of the present invention provides a system for self-aging of a radio remote unit, including an aging test mode setting device, a to-be-aged RRU, a power load, and an aging test software module arranged in the to-be-aged RRU. Furthermore, a debugging and testing computer can be arranged, and the debugging and testing computer is connected with a debugging network port of the RRU. The debugging computer can be used for exporting the aging test data and the test result of the RRU to the debugging computer through a debugging network port of the RRU for storage and analysis of the test data.
The aging test mode setting device is an external tool, and the preferred embodiment is to short circuit the internal pins 7 and 8 of a standard RJ45 connector, insert the short circuit into the debugging serial port of the RRU to be aged, and set the RRU to be aged to enter the aging test mode.
Before the aging RRU starts to send signals, the radio frequency ports of the RRU are required to be connected with standard radio frequency power loads one by one. The RRU to be aged is abbreviated as RRU hereinafter.
The aging test software module comprises an aging test mode setting unit, a clock generating unit, a data source and time slot generating unit, an aging test data recording unit and an aging test result judging unit. In specific implementation, the aging test software module can be realized in a software mode or a modularized mode.
The device comprises an aging test mode setting unit which is a component of an aging test software module, wherein an external aging test mode setting device can pull down an input pin connected with the RRU from a default high level state (normal working mode) to a low level state after being inserted into a debugging serial port of the RRU, the aging test mode setting unit detects the level state of the pin and is used as a basis for judging whether the RRU enters the aging test mode, when the RRU is started, the high level is detected, the RRU is judged to be in the normal working mode, and the low level is detected, the RRU is judged to enter the aging test mode.
And 2, the clock generating unit is used for operating frequency multiplication of an interface FPGA (Field Programmable Gate Array) inside the RRU to generate a clock reference signal to a clock chip of the RRU single board after the RRU enters the aging test mode through the aging test mode setting unit, and the clock chip generates various clocks required by the work of each device inside the RRU, such as the work clocks of devices such as an ADC (analog-to-digital converter), a DAC (digital-to-analog converter) and a local oscillator, so that each device needing clock driving inside the RRU can work normally.
A data source and time slot generating unit, which is used for loading the corresponding test E-TM3.1 data source file from the RRU flash memory to a data sending module of the RRU DDR SDRAM (double data rate synchronous dynamic random access memory) according to the information of the system, frequency band, full power and the like of the RRU after all the components in the RRU work, and generating a time slot switching control signal according to the loaded data source type information (the system, time slot ratio and the like);
4, an aging test data recording unit, configured to initialize the RRU-related module after the data source is generated, where the module to be initialized includes a frequency setting module, a link gain setting module, and a digital signal switching module, then configure the AXC data, open the radio frequency channel and the working state monitoring task, output the baseband data source data to the power load through the downlink radio frequency output port, and record the aging test data;
and 5, the aging test result judging unit counts whether the key power is in a threshold range, whether alarm information exists, whether the running state of the equipment is normal and other conditions according to the data information recorded by the aging test, integrates the conditions to be used as a basis for judging whether the RRU aging test passes or not, and can export the aging test record through a debugging network port of the RRU to be aged.
Based on the system, the working process is as follows:
the aging test mode setting device sets the level state of a vacant pin on a debugging serial port connector of the remote radio unit to be low as a basis for judging whether to enter an aging test mode, reads the state of the level after a software system of the remote radio unit is started, and enters the aging test mode if the level is found to be low.
After entering the aging test mode, the programmable logic array in the remote radio unit generates a reference clock, configures a clock chip, generates a board-level working clock of an internal device of the remote radio unit, and loads a corresponding E-TM3.1 test data source into the data sending module according to the system and bandwidth information of the remote radio unit.
The method comprises the steps of automatically configuring AXC information corresponding to carriers of each channel according to the system and bandwidth information of a radio remote unit to obtain baseband data source data, outputting the baseband data source data to a power load through a downlink radio frequency output port, and after the radio remote unit works in an aging test mode, periodically inquiring and recording key power information, monitoring state information, alarming state information and the like of each channel of the radio remote unit in a log file record mode by the radio remote unit to form an aging test data record.
And after the aging is finished, judging whether the aging is successful or not according to the aging test record data, and exporting the aging test record data with the serial number of the remote radio unit as the title.
The working flow of the method for self-aging test of a radio remote unit provided by the invention is shown in fig. 2, and the embodiment takes as an example that the equipment to be aged is a china unicom D frequency band (2535M-2555M Hz), the system is a TD-LTE system, the full power of radio output is 46dBm, the number of channels is 2 channels of RRU equipment, and the method specifically comprises the following steps:
step 1, inserting an aging test mode setting device into an RRU debugging serial port, wherein a software aging test mode setting unit can detect the high and low level states of 1 unused pin in the debugging serial port connector in the process of powering on and starting the RRU, and under the normal working condition of a non-set aging test mode, the level is high level, the RRU directly skips the subsequent aging test step and executes the normal running state, if the level is detected to be low level (the level is pulled down by an external aging test device in a short circuit), the RRU enters the aging test mode and starts the subsequent aging test working mode step;
step 2, when the RRU to be aged is set to be in an aging test mode, entering an aging working mode state, operating a frequency multiplication of an interface FPGA (Field Programmable Gate Array) inside the RRU by a clock generation unit to generate a 61.44MHz clock reference signal to a clock chip of the RRU single board, and generating multiple clock frequencies required by the operation of each device inside the RRU by the clock chip using the reference signal as a reference, so that each device inside the RRU, which needs to be driven by a clock, can normally work under the same reference clock, thereby supporting the completion of initialization configuration work of an internal module of the RRU;
and 3, the data source and the time slot generating unit read and load the corresponding E-TM3.1 data source for testing from an internal FLASH memory of the RRU to a RRU DDR (double-rate synchronous dynamic random access memory) sending module according to the information of the RRU system, frequency band, full power and the like, and generate a time slot switching control signal according to the loaded data source type information (system, time slot ratio and the like). In combination with this embodiment, an E-TM3.1 test source with TDD format, 20M Hz bandwidth and 3:8 time slot ratio should be selected and loaded to the DDR module.
And 4, the aging test data recording unit initializes the RRU relevant module after the data source is generated, then starts to configure the AXC according to the information such as the system, the bandwidth and the like supported by the RRU, starts a downlink, a feedback link and an uplink, opens the DDR data source sending module, and starts to run the aging test. By combining the specific embodiment, an RRU antenna 1 needs to be configured to acquire data from AXC 0-7, an antenna 2 needs to be configured to acquire data from AXC 8-15, uplink and downlink and feedback links of 2 channels are opened, and an aging test is started;
and step 5, after the aging test mode starts to work, generating an aging test record file by taking the serial number of the RRU equipment as a title, and periodically storing the received RRU power information such as the digital power of a data source, the output power of an RRU antenna port, the digital power of a feedback link and the like, the state monitoring information such as the running state of the equipment, the resource usage of a CPU and the like, and the state alarm information such as standing-wave ratio alarm, temperature alarm, channel gain fault alarm and the like in the aging test record file of the file system in the RRU by the aging test record task. The aging test recording task periodically records test information such as power information, state monitoring information, alarm information and the like of the RRU to an aging test recording file, so that the aging test result judgment and the archiving management of the aging test recording file are facilitated;
and 6, after the aging test, judging whether the aging test is successful or not according to the information recorded by the aging test, and determining the aging test result. By combining the specific embodiment, it needs to be determined that the digital power of the data source at the antenna port is-14.0 +/-1.0 dBfs, the output power of the antenna port of the RRU is 46 +/-1.5 dBm, and the digital power of the feedback link is-17.0 +/-2.0 dBfs. If all the 3 power information conditions are met, the power information condition of the RRU aging test is passed; similarly, the condition that the state monitoring information has no abnormal condition and the state alarm information has no alarm condition is also required to be met. Only if 3 conditions of power information, state monitoring information and state warning information of the RRU aging test are all met, the RRU aging test can be judged to pass, and an aging test result is determined; the aging test recording file and the test result can be exported through a network port and used for archiving and recording aging test data;
and 7, finishing the RRU self-aging test.
The technical scheme of the invention does not need to add additional auxiliary test resources and does not depend on an external test platform and configuration operation, thereby being particularly suitable for realizing batch aging of the radio remote units and improving the productivity. The aging test mode setting provided by the invention is only needed to be used when the RRU is started to set to enter the aging test mode, so that only one aging test mode setting device is needed to set each RRU to be aged to enter the aging test mode in turn, and the cost is further saved.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are included in the scope of the present invention.
Claims (10)
1. A self-aging test method for a radio remote unit is characterized by comprising the following steps: self-aging is carried out by utilizing the self-part of the equipment, batch aging of the remote radio units is supported to be realized, and mixed aging of the remote radio units with different systems, different frequency bands and different channel numbers is supported to be realized; the RRU to be aged is connected with a power load, and the aging test mode setting device is connected with a debugging serial port of the RRU to be aged;
the aging test software module comprises an aging test mode setting unit, a clock generating unit, a data source and time slot generating unit, an aging test data recording unit and an aging test result judging unit;
the device comprises an aging test mode setting unit, a debugging serial port and a test unit, wherein the aging test mode setting unit is used for pulling down an input pin connected with the RRU from a default high level state to a low level state after an external aging test mode setting device is inserted into the debugging serial port of the RRU, the aging test mode setting unit detects the level state of the pin and is used as a basis for judging whether the RRU enters an aging test mode or not, when the RRU is started, the RRU judges that the RRU is in a normal working mode when detecting the high level, and judges that the RRU enters the aging test;
the clock generating unit is used for operating an interface FPGA inside the RRU to generate a clock reference signal to a clock chip of the RRU single board after the RRU enters the aging test mode through the aging test mode setting unit, and the clock chip generates various clocks required by the work of each device inside the RRU, so that each device needing clock driving inside the RRU can work normally;
the RRU comprises a data source and time slot generating unit, a data source and time slot switching control unit and a data source and time slot switching control unit, wherein the data source and time slot generating unit is used for loading a corresponding test data source file from an RRU flash memory to an RRU DDR SDRAM data sending module according to the system, frequency band and full power information of the RRU and generating a time slot switching control signal according to the loaded type information of the data source;
the system comprises an aging test data recording unit, a power load monitoring unit and a power load monitoring unit, wherein the aging test data recording unit is used for initializing RRU related modules after a data source is generated, the modules needing to be initialized comprise a frequency setting module, a link gain setting module and a digital signal switch module, then configuring AXC data, opening a radio frequency channel and a working state monitoring task, outputting baseband data source data to the power load through a downlink radio frequency output port, and recording aging test data;
the aging test result judging unit is used for counting whether the key power is in a threshold range or not, whether alarm information exists or not and whether the running state of the equipment is normal or not according to the data information recorded by the aging test, integrating the data information and the running state of the equipment to be used as a basis for judging whether the aging test of the RRU passes or not, and exporting the aging test record through a debugging network port of the RRU to be aged;
the RRU to be aged is set to enter an aging test mode through an aging test mode setting device, and then the following processing is executed based on an aging test software module in the RRU to be aged,
detecting and judging whether the RRU to be aged enters an aging test mode;
after the RRU enters an aging test mode through an aging test mode setting unit, generating a clock reference signal to a clock chip of the RRU single board to provide a working clock;
loading a data source file for testing from a flash memory of the RRU to be aged to a data sending module of the RRU to be aged, and generating a time slot switching control signal according to the loaded data source type information;
after a data source is generated, initializing a relevant module of the RRU to be aged, configuring AXC data, opening a radio frequency channel and a working state monitoring task, outputting baseband data source data to a power load through a downlink radio frequency output port, and recording aging test data;
and according to the data information recorded by the aging test, counting power information, state monitoring information and state alarm information of the RRU aging test, comprehensively judging whether the RRU aging test passes or not, and supporting to lead out the aging test record through a debugging network port of the RRU to be aged.
2. The self-aging testing method of the remote radio unit according to claim 1, wherein: the burn-in test mode setting device is implemented by an RJ45 connector.
3. The self-aging testing method of the remote radio unit according to claim 1, wherein: and setting a debugging and testing computer, wherein the debugging and testing computer is connected with a debugging network port of the RRU to be aged, and the aging testing data and the testing result of the RRU are led out to the debugging and testing computer through the debugging network port for storage and analysis of the testing data.
4. The self-aging test method of the remote radio unit according to claim 1, 2 or 3, wherein: and when 3 conditions of the power information, the state monitoring information and the state alarm information of the aging test are all met, judging that the RRU aging test is passed.
5. The self-aging test method of the remote radio unit according to claim 1, 2 or 3, wherein: the method is used for carrying out batch aging test on the plurality of RRUs to be aged.
6. A radio remote unit self-aging test system is characterized in that: the method comprises the following steps of utilizing self parts of equipment to carry out self-aging, supporting the realization of batch aging of the remote radio units, and supporting the realization of mixed connection aging of the remote radio units with different systems, different frequency bands and different channel numbers, wherein the realization mode comprises an aging test mode setting device, an RRU to be aged and a power load, the RRU to be aged is provided with an aging test software module, and the RRU is the remote radio unit; the RRU to be aged is connected with a power load;
the device comprises an aging test mode setting device and a debugging serial port setting device, wherein the aging test mode setting device is used for setting the RRU to be aged to enter an aging test mode;
the aging test software module comprises an aging test mode setting unit, a clock generating unit, a data source and time slot generating unit, an aging test data recording unit and an aging test result judging unit;
the aging test mode setting unit is used for detecting and judging whether the RRU to be aged enters an aging test mode;
the clock generation unit is used for generating a clock reference signal to a clock chip of the RRU single board after the RRU enters the aging test mode through the aging test mode setting unit and providing a working clock;
the device comprises a data source and time slot generating unit, a data source and time slot generating unit and a time slot switching control unit, wherein the data source and time slot generating unit is used for loading a data source file for testing from a flash memory of the RRU to be aged to a data sending module of the RRU to be aged and generating a time slot switching control signal according to the loaded type information of the data source;
the aging test data recording unit is used for initializing a relevant module of the RRU to be aged after a data source is generated, then configuring AXC data, opening a radio frequency channel and a working state monitoring task, outputting baseband data source data to a power load through a downlink radio frequency output port, and recording aging test data;
and the aging test result judging unit is used for counting power information, state monitoring information and state alarm information of the RRU aging test according to the data information recorded by the aging test, comprehensively judging whether the RRU aging test passes or not, and supporting the derivation of the aging test record through a debugging network port of the RRU to be aged.
7. The remote radio unit self-aging testing system of claim 6, wherein: the burn-in test mode setting device is implemented by an RJ45 connector.
8. The remote radio unit self-aging testing system of claim 6, wherein: and setting a debugging and testing computer, wherein the debugging and testing computer is connected with a debugging network port of the RRU to be aged, and the aging testing data and the testing result of the RRU are led out to the debugging and testing computer through the debugging network port for storage and analysis of the testing data.
9. The remote radio unit self-aging testing system according to claim 6, 7 or 8, wherein: and when 3 conditions of the power information, the state monitoring information and the state alarm information of the aging test are all met, judging that the RRU aging test is passed.
10. The remote radio unit self-aging testing system according to claim 6, 7 or 8, wherein: when a plurality of RRUs to be aged are subjected to batch aging test, only one aging test mode setting device is adopted, and the RRUs to be aged are set in turn to enter an aging test mode.
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| CN111371514B (en) * | 2018-12-26 | 2022-06-07 | 上海原动力通信科技有限公司 | Load device and system for aging test of base station radio frequency channel |
| CN111427732A (en) * | 2020-03-12 | 2020-07-17 | 东莞市金锐显数码科技有限公司 | Aging test method, aging test device, terminal and computer-readable storage medium |
| CN113726456B (en) * | 2020-05-26 | 2023-05-05 | 大唐移动通信设备有限公司 | Detection method of remote radio unit and remote radio unit |
| CN113125938B (en) * | 2021-03-17 | 2024-04-02 | 东莞市金锐显数码科技有限公司 | Aging test monitoring method and system |
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