WO2006120777A1 - 基地局、受信装置及び受信機障害診断方法 - Google Patents
基地局、受信装置及び受信機障害診断方法 Download PDFInfo
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- WO2006120777A1 WO2006120777A1 PCT/JP2005/023286 JP2005023286W WO2006120777A1 WO 2006120777 A1 WO2006120777 A1 WO 2006120777A1 JP 2005023286 W JP2005023286 W JP 2005023286W WO 2006120777 A1 WO2006120777 A1 WO 2006120777A1
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- receiver
- gain
- path
- base station
- signal
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
Definitions
- the present invention relates to a base station, a receiving device, and a receiver failure diagnosis method, and more particularly to a base station, a receiving device, and a receiver failure diagnosis method in a mobile communication system.
- the radio base station is equipped with a transmitter and a receiver.
- the failure detection of the transmitter can be realized relatively easily by branching a part of the main transmission signal generated by the transmitter and monitoring it.
- failure detection of a receiver cannot be realized by simply monitoring a part of the received signal.
- the reason for this is that the power of the received signal input to the receiver fluctuates every moment according to the installation environment and the number of connected terminals, so a threshold value for determining whether the received power value is normal or abnormal can be determined. This is because it cannot be done. Therefore, in order to detect a failure in the receiver, it is common to implement some known test signal by inputting it into the receiver and monitoring the reception status of the receiver.
- the receiver diagnosis method can be broadly divided into two methods.
- the other is a test in the same radio base station equipment.
- This is a method of mounting a test signal generator that outputs a signal (see, for example, Japanese Patent Application Laid-Open No. 2001-127715).
- some known test signal must be input to the receiver in order to detect faults in the receiver.
- a wide service area is divided into a number of small areas called cells, and a radio base station apparatus is arranged in each cell.
- the radio base station apparatus is connected to the network, and the user terminal can communicate with the radio base station apparatus of the cell to which the terminal belongs via radio, and communicate with another terminal via the network. It becomes possible.
- a picocell base station is a device that reduces the size of the base station itself to the limit by reducing the cell size that can be supported compared to the conventional base station.
- the downsizing of the base station greatly increases the degree of freedom of installation, enabling the base station to be installed in locations where the base station could not be installed, and expanding the service area. is there.
- a known test signal must be input to the receiver.
- a part of the output signal of a transmitter mounted in the same base station apparatus is branched and input to a receiver to realize fault detection of the receiver.
- this method in principle, must be such that the frequency of the test signal matches the reception frequency of the receiver, and can be easily applied to TDD (Time Division Duplex) type radio base stations. There is a problem that it cannot be applied to other types of radio base stations.
- the above-mentioned Japanese Patent Application Laid-Open No. 2001-127715 discloses a method of branching a part of an output signal of a local oscillator which is a component of a receiver and using this as a test signal. Yes.
- the receiver has good reception sensitivity and at the same time reception selectivity. Is required to be high.
- the receiver is equipped with a multi-stage filter that attenuates signals of all frequency components other than its own band. Since the frequency of the local signal is outside the reception band of the receiver, if this is used as a test signal, there is a problem that it becomes difficult to receive the test signal because the pass loss of the test signal is too large.
- the pass loss outside the reception band is generally only specified as a minimum value, and variation among individual base station devices is very large.
- the threshold value for distinguishing between “normal” and “abnormal” depends on the passage loss at the frequency of the test signal. Therefore, there is a problem that the dispersion of the passage loss is large and the threshold value cannot be determined appropriately.
- an increase in a device / circuit for detecting a failure causes an increase in mounting area and power consumption. It also raises the manufacturing cost and may damage the characteristics of the picocell base station.
- the present invention provides a base station and a receiving device that can detect a failure of a receiver of a radio base station by a simple method without inputting a created test signal to the receiver.
- the purpose is to provide a receiver fault diagnosis method.
- Another object of the present invention is to easily realize fault detection of a receiver in a radio base station such as a picocell base station that is particularly demanding for downsizing.
- Another object of the present invention is to easily realize receiver failure detection of a radio base station without service interruption without using a special test signal.
- thermal noise present in the receiver is used for detecting a failure in the receiver, rather than using a test signal.
- Thermal noise is generated by the movement of free electrons in the conductor due to thermal energy, and is a noise that is uniformly distributed at all frequencies. Therefore, in any receiver, thermal noise is always generated inside the conductor at the receiver input (or in the circuit). The generated thermal noise is amplified by the amplifier inside the receiver in the same way as other received signals and input to the demodulator.
- the fault detection circuit is configured by mounting three high-frequency switches and an automatic gain control amplifier that makes the signal power input to the demodulator constant in the receiver. By switching these three high-frequency switches, the signal path inside the receiver is switched, In this case, the normal value of the receiver is diagnosed using the gain value of the automatic gain control amplifier.
- a receiver for receiving a signal from a terminal via the antenna
- a control unit for determining the normality of the receiver
- a base station with which
- a first switch for switching whether the input end of the receiver is connected to the antenna or terminated
- a low-noise amplifier that amplifies a signal input from an input terminal of the receiver with low distortion, and a signal path of the receiver via a first path via the low-noise amplifier or via the low-noise amplifier
- a second switch that switches to a second path that does not
- An automatic gain control amplifier that controls the gain so that the output is constant, and amplifies the output from the amplification unit with a controlled gain
- the controller is
- thermal noise is input to the low noise amplifier
- the first gain of the automatic gain control amplifier when connected to the first path by switching the second switch unit and the automatic gain control amplifier when connected to the second path Each with a second gain
- the acquired first gain and second gain are within the predetermined first range and second range, respectively, and the difference between the first gain and the second gain is predetermined. Therefore, the base station for judging the normality of the receiver is provided. [0014] According to the second solution of the present invention,
- a receiver for receiving a signal via the antenna
- a control unit for determining the normality of the receiver
- a receiving device comprising:
- a switch unit that switches whether the input end of the receiver is connected to the antenna or terminated
- a low-noise amplifier that amplifies a signal input from the input end of the receiver with low distortion
- the control unit terminates the input end of the receiver by the switch unit, and causes thermal noise at the input end of the receiver to be input to the low noise amplifier.
- the receiving device is provided in which the thermal noise is used as a test signal for judging the normality of the receiver.
- the receiver signal path is connected to a first path via a low noise amplifier and an automatic gain control amplifier that controls the gain so that the output is constant and amplifies the signal with the gain.
- the first gain of the automatic gain control amplifier is obtained when the signal is connected to the other path, and the signal path of the receiver is not passed through the low noise amplifier, but the second path through the automatic gain control amplifier. connection,
- the second gain of the automatic gain control amplifier when connected to the second path is acquired, and the acquired first gain and second gain are within a predetermined first range and second gain, respectively.
- the receiver fault diagnosis for judging the normality of the receiver by being within a range of 2 and a difference between the first gain and the second gain being within a predetermined third range Direction Law is provided.
- a base station, a receiver, and a receiver failure that enable detection of a failure of a receiver of a radio base station by a simple method without inputting a created test signal to the receiver.
- a diagnostic method can be provided.
- FIG. 1 is a configuration diagram of a radio base station.
- the radio base station 100 includes a radio signal transmission / reception unit 110, a modulation / demodulation processing unit 111, a line interface unit 112, and a base station control unit 113.
- the radio base station is, for example, a picocell base station. Note that the picocell base station is just one application example, and the failure detection circuit and the diagnosis method according to the present embodiment can be applied to other radio base station apparatuses including the picocell base station. It can also be applied to a receiving apparatus other than a radio base station.
- Radio signal transmission / reception section 110 is connected to transmission / reception shared 0-system antenna 114 and reception-use 1-system antenna 115, and includes 1-system transmitter 132 and 2-system receiver (system 0 receiver 133). ⁇ Has a 1-system receiver 134). Further, the radio signal transmission / reception unit 110 includes a DUP (duplexer) 130 that separates the downlink radio signal 120 and the uplink radio signal 121, and a BPF (band pass filter) 131 that limits the pass band of the uplink radio signal 121. The transmitter 132 converts the downlink baseband signal 125 input from the modulator 135 into the downlink radio signal 122.
- DUP duplexer
- BPF band pass filter
- the 0-system receiver 133 receives the uplink radio signal 121 transmitted from the terminal 101 via the DUP 130 (signal 123) and converts it into the uplink baseband signal 126. Also, the first-system receiver 134 receives the uplink radio signal 121 transmitted from the terminal 101 via the BPF 131 (signal 124), and the uplink baseband signal Convert to 127.
- the modulation / demodulation processing unit 111 includes a modulator 135 and a demodulator 136, and modulates and demodulates data.
- the line interface unit 112 is an interface between the radio base station 100 and the network 102.
- the base station control unit 113 has a function of monitoring and controlling the radio base station 100.
- the base station control P unit 113 includes a CPU 137, a memory (for example, RAM 138, ROM 139), and an IZO 140. Note that the base station control unit 113 is connected to the radio signal transmission / reception unit 110, and can transmit / receive information to / from a receiver in the radio signal transmission / reception unit 110.
- the maintenance terminal 103 is connected to the base station control unit 113 via the network 102 and has a function of remotely monitoring and controlling the radio base station 100.
- the radio base station 100 may include a plurality of radio signal transmission / reception units 110 and a plurality of modulation / demodulation processing units 111 connected to the respective radio signal transmission / reception units 110 corresponding to a plurality of sectors. Les. In this case, each radio signal transmitting / receiving unit 110 and modulation / demodulation processing unit 111 are connected to the base station control unit 113, and each modulation / demodulation processing unit 111 is connected to the line interface unit 112.
- FIG. 2 is a configuration diagram of a receiver that incorporates a fault detection circuit that realizes fault detection of the receiver. Note that FIG. 2 illustrates the configuration of the 0-system receiver 133.
- the 0-system receiver 133 and the 1-system receiver 134 may have the same configuration, and thus the description of the 1-system receiver 134 is omitted.
- the 0-system receiver 133 includes a plurality of switches SW201 (first switch unit), SW202, SW203 (SW202 and 203 are used as the second switch unit), LNA (low noise amplifier) 205, and AMP (amplifier). 206, AMP 208 and BPF (band pass filter) 207, ADC (AD converter) 209, baseband unit 212, and termination circuit 213.
- the baseband unit 212 includes a BB-BPF (baseband bandpass filter) and an AGC-AMP (automatic gain control amplifier). Note that the LNA 205 (first amplifying unit), AMP206, BPF207, and AMP 208 (second amplifying unit) may be composed of other elements having equivalent functions.
- the receiver 133 has three high-frequency switches SW201, SW202, and SW203.
- the SW 201 has a function of switching whether the input terminal of the receiver is connected to the antenna 114 or terminated.
- the receiver 133 functions as a receiver when the input terminal is connected to the antenna 114, and functions as a fault detection circuit when the input terminal is connected to the termination circuit 213.
- Work When the input end of the receiver is terminated by SW201 (when connected to the termination circuit 213 side), thermal noise present at the input end is input to the LNA 205 and amplified. Thermal noise exists in conductors at a level determined by the Boltzmann coefficient and temperature. This thermal noise is used as a test signal. Note that thermal noise is present in areas other than the input end. For example, the effect on the fault test is small compared to the level of the signal amplified with low distortion by the force LNA205 existing in the conductor between SW203 and AMP206.
- SW202 and SW203 operate in conjunction with each other and have a function of switching the signal path of the receiver between passing through an LNA (low noise amplifier) 205 or a path 204 bypassing the LNA 205.
- LNA low noise amplifier
- SW setting (1) the route via LNA 205 (first route) is established.
- SW setting (2) the route via LNA 205 that bypasses LNA205 is obtained.
- the LNA 205 is a low noise amplifier that amplifies a received signal with low distortion.
- AMP206 to AMP208 are amplifiers that amplify the received signal with a predetermined gain.
- the BPF 207 is a band pass filter that attenuates unnecessary signal components other than its own band.
- the ADC 209 is an AD converter that converts an input signal from an analog signal to a digital signal.
- BB-BPF2 10 is a band pass filter function realized by digital signal processing.
- the AGC-AM P211 is an automatic gain control amplifier, and has a function of changing the gain of the amplifier according to the input power in order to keep the signal power input to the demodulator 136 constant. In FIG.
- the power of realizing the function of the AGC-AMP 211 as the function of the baseband unit 212 may be realized in the analog signal processing part before the signal is converted from analog to digital.
- the receiver 133 sets SW 201 to 203 in accordance with an instruction from the base station control unit 113 and has a function of reporting the gain of the AGC-AMP 211.
- the gain of AGC-AMP 211 is closed-loop controlled so that the upstream signal power at the demodulator input port (port (5) 225) is OdBm.
- the gain value of the AGC-A MP211 when a signal with a known power value is input to the receiver input Has an expected value. In other words, if the gain value of AGC-AMP211 is within the expected value range obtained in advance, it is possible to diagnose the normality of the receiver.
- FIG. 3 is a sequence diagram of a receiver failure detection method.
- the base station control unit 113 receives the request or instruction from the maintenance terminal 103 via the network 102 and the line interface unit 112, and controls the setting of the radio signal transmission / reception unit 110. Further, the base station control unit A detailed procedure for returning a response or result to the request or instruction to the maintenance terminal 103 via the line interface unit 112 and the network 102 is well known and will be omitted.
- Receiver normality diagnosis is started when a maintenance worker inputs an instruction to execute receiver normality diagnosis to the maintenance terminal 103.
- an appropriate trigger may be used such as starting diagnosis at a predetermined time according to a predetermined diagnosis schedule.
- the command to execute the receiver health diagnosis includes the designation of the base station to be tested and the designation of the receiver to be diagnosed (for example, sector and Z or system identifier).
- step 301 maintenance terminal 103 notifies base station control section 113 of designated radio base station 100 of a diagnosis start instruction including identification information of the designated receiver. It is also possible to omit the designation of the receiver to be diagnosed and prepare a command to sequentially execute the test by all the receivers in the radio base station 100 or a predetermined receiver. .
- the base station wholesaler 113 sends the SW201 to SW203 to the 0-system receiver 133. Instruct the setting.
- the 0-system receiver 133 sets SW2 01 to terminal 1 and sets SW202 and SW203 to the terminal 1 side (SW setting (1)) according to the SW setting instruction.
- SW setting (1) the receiver input terminal is terminated, so that only the thermal noise is input to the port (1) 222 in the 0-system receiver 133 equivalently.
- the SW setting (1) the route goes through LNA205. Note that how each SW is switched is determined in advance.
- the SW setting instruction from the base station control unit 113 can include setting information of each SW 201, 202, 203.
- the SW setting instruction may include an identifier for SW setting, and the receiver may set each SW according to predetermined setting information corresponding to the identifier.
- the receiver When the receiver is connected to the antenna 114, the power that the uplink radio signal and external noise are input to the receiver.
- the power of these signals depends on the installation environment of the base station 100, the number of connected terminals, etc. Since it fluctuates every moment, it cannot be considered that the received power value is constant.
- the receiver input terminal is terminated during diagnosis. Note that if the receiver input terminal is terminated, the receiver cannot receive the downlink radio signal 121.
- the receiver can be diagnosed without service interruption.
- the 0-system receiver 133 reports the gain value of AGC-AMP to the base station control unit 113 (hereinafter, the reported value is referred to as AGC-AMP gain (1)).
- the receiver 133 can report the gain value of AGC-AMP after a predetermined time of SW setting.
- the base station control unit 113 records the AGC-AMP gain (1) reported from the 0-system receiver 133 in the RAM 138.
- step 306 the base station control unit 113 instructs the 0-system receiver 133 to set SW201 to SW203 again.
- the 0-system receiver 133 sets SW201 to terminal 1 and SW202 and SW203 to terminal 2 side (SW setting (2)) according to the SW setting instruction.
- the 0-system receiver 133 reports the AGC-AMP gain value to the base station control unit 113 (hereinafter, the reported value is referred to as AGC-AMP gain (2)).
- the base station control unit 113 calculates the AGC-AMP gain (2) reported from the 0-system receiver 133 as RAMI. Record in 38.
- step 310 the base station control unit 113 commands the setting of SW20 :! to SW203 to return the 0-system receiver 133 from the setting for failure detection to the normal setting of the receiver.
- step 311 the 0-system receiver 133 sets SW201 to terminal 2 and SW202 and SW203 to terminal 1 side.
- the 0-system receiver 133 can receive the uplink radio signal 121 because the receiver input terminal is connected to the antenna 114, and returns to the normal operation state.
- step 312 the base station control unit 113 records the AGC_AMP gain recorded in the RAMI 38.
- step 313 the base station control unit 113 reports the diagnosis result to the maintenance terminal 103.
- the diagnosis result includes, for example, information (for example, sector and / or system) for identifying the receiver that performed the diagnosis, and the gain value (1), (2), and / or AGC-AMP211 stored in the RAM 138. Alternatively, information indicating whether or not a receiver failure has occurred can be included.
- the maintenance terminal 103 receives the diagnosis result, displays the received diagnosis result on the display unit and / or stores it in the storage unit, and ends the diagnosis.
- the total gain is the gain of the entire section, and is calculated from the gain value of each component.
- the numbers shown in the total gain column for the sections (2) to (3) indicate the gains for the sections (1) to (3), and the sections (3) to (3
- the numerical values shown in the column of total gain in 4) indicate the gains in sections (1) to (4).
- the total noise figure is the noise figure of the entire section, and is calculated from the gain value and noise figure value of each component. 4 and 5, the numerical values shown in the column of total noise figure for the sections (2) to (3) indicate the noise figures for the sections (1) to (3), and the sections (3) to (4 ) In the overall noise figure column
- the noise figure in the interval (1) to (4) is shown.
- the noise figure indicates how much the SZN ratio deteriorates for inputs with low levels such as thermal noise. If the input level is large, the deterioration of the S / N ratio is small.
- thermal noise is input to the LNA 205 in the sections (2) to (3), so the total noise figure is amplified in the power section (3) to (4) that increases by the noise figure of the LNA.
- the total noise figure increase (2. OdB) is smaller than the noise figure (14.8 dB) in sections (3) to (4).
- the total noise figure is, for example, the sections (3) to ( Increase by 4) noise figure (14.8 dB).
- AGC The gain of AMP211 is assumed to be closed-loop controlled so that the power at port (5) 225 becomes 0 (18111. Thermal noise generated at port (1) 221 The power can be calculated using the following formula.
- BW Reception bandwidth [Hz].
- the reception bandwidth of the narrow-band CDMA wireless base station is 1.23 MHz, if the temperature is 25 ° C, the thermal noise power of the port (1) is -113 dBm. Since SW201 is set to the terminal 1 side and the receiver input terminal is terminated, this thermal noise is input to the receiver.
- FIG. 6 and FIG. 7 are level diagrams of the receiver in the case of SW setting (1) and SW setting (2).
- the total gain, total noise figure, and noise power of the receiver vary, for example, at the levels shown in Figs.
- the thermal noise power generated at the port (1) 221 is, for example, _113 dBm (bandwidth 1.23 MHz, temperature 25 ° C.). Since SW201 is set to terminal 1 and the receiver input terminal is terminated, no signal other than this thermal noise is input to the receiver.
- the thermal noise generated at port (1) 221 reaches port (4) with a level dial of noise power 601.
- the closed loop control is performed so that the gain of AGC-AMP211 becomes +58 dB.
- the expected value of AGC-AMP gain (1) can be calculated as 58 dB.
- AGC-AMP gain (1) varies due to the following factors.
- the other is individual variation of components between the port (1) 221 and the port (4) 224. This varies depending on the circuit scale of the receiver and the parts used, but generally there is a variation of ⁇ 1 dB to 3 dB.
- the normality judgment threshold value must be determined in consideration of these variations. For example, the expected value is 58 dB, the allowable range is ⁇ 3 dB, and within 58 dB ⁇ 3 dB is the standard value for AGC-AMP gain (1). . Note that the expected value and variation value of AGC-AMP gain (1) are only examples, and other values can be used.
- the thermal noise generated at port (1) 221 reaches port (4) by the level diagram of noise power 701 in FIG.
- the received power at port (4) 224 can be calculated as follows.
- the gain of AGC-AMP211 is closed-loop controlled so as to be +62.2 dB.
- the standard value of AGC-AMP gain (2) is assumed to be 62.2 dB of the expected value, the allowable range is ⁇ 3 dB, and within 62.2 dB ⁇ 3 dB.
- the expected value and variation value of AGC-AMP gain (2) are examples, and other values can be taken.
- the AGC-AMP gain (1) recorded by the base station control unit 113 in step 305 is 60 dB. This is within the standard of the AGC-AMP gain (1) described above. However, it may not be said that the receiver is normal.
- LN Considering the case where A205 fails and the signal is not amplified, and only thermal noise is input to port (3) 223, in this case, the noise signal power is the same as the level power of noise power 701. That is, since it is equivalent to the condition of SW setting (2), the gain of AGC-AMP211 can be a value within 62.2 dB ⁇ 3 dB. That is, even when the LNA 205 fails, the AGC_AMP gain (1) can be 60 dB.
- step 312 described above in order to prevent such a misdiagnosis, a receiver that satisfies all of the following conditions is diagnosed as normal, and other receivers are diagnosed as abnormal.
- the expected value of (AGC—AMP gain (2)) — (AGC—AMP gain (1)) is the value obtained by subtracting the expected value of AGC—AMP gain (1) from the expected value of AGC—AMP gain (2). Therefore, it is 4.2 dB.
- the variation in this value is smaller than the variation in AGC—AMP gain (1) and AGC—AMP gain (2).
- the reason is that in the circuit that measures AGC-AMP gain (1) and AGC-AMP gain (2), between port (1) 221 to port (2) 222 and port (3) 223 to port (4) 224 This is because they are common. Since the port (1) 221 to the port (2) 222 are in common, the thermal noise power generated at the port (1) 221 is not affected by temperature.
- the variation in the value of (800_8 1 ⁇ ? Gain (2)) _ (8 GC-AMP gain (1)) varies between port (2) 222 and port (3) 223, that is, LNA205 It depends only on the performance variation. For example, depending on the performance related to the amplification factor and noise, the allowable range is ⁇ ldB and the standard value of (AGC—AMP gain (2)) _ (AGC—AMP gain (1)) is within 4.2 dB ⁇ ldB. You can take other values. Specific numerical values within the above three conditions are determined from the values shown in FIGS.
- the CPU of the base station control unit 113 follows the procedure shown in Fig. 3.
- the AGC_AMP gain (1) and AGC_AMP gain (2) acquired and recorded in the above are applied to the above three conditions to determine whether the receiver is normal or abnormal.
- the present invention can be used for a radio base station apparatus in a mobile communication system. It can also be used for small picocell base stations.
- FIG. 1 is a block diagram of a radio base station apparatus according to an embodiment of the present invention.
- FIG. 2 is a block diagram of a receiver failure detection circuit according to an embodiment of the present invention.
- FIG. 3 is a sequence diagram of a receiver normality diagnosis method according to an embodiment of the present invention.
- FIG. 4 shows the performance of a receiver in the case of SW setting (1) according to an embodiment of the present invention.
- FIG. 5 shows the performance of the receiver in the case of SW setting (2) according to an embodiment of the present invention.
- FIG. 6 is a level diagram of the receiver in the case of SW setting (1) according to one embodiment of the present invention.
- FIG. 7 is a receiver level diagram in the case of SW setting (2) according to an embodiment of the present invention.
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CN2005800497579A CN101176283B (zh) | 2005-05-12 | 2005-12-19 | 基站、接收装置和接收机故障诊断方法 |
US11/914,264 US8082006B2 (en) | 2005-05-12 | 2005-12-19 | Base station, receiving apparatus, and receiver trouble diagnosing method |
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JP2005139711A JP4373361B2 (ja) | 2005-05-12 | 2005-05-12 | 基地局 |
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JP5042949B2 (ja) * | 2008-09-01 | 2012-10-03 | 株式会社日立製作所 | 基地局及び受信機障害診断方法 |
JP5042955B2 (ja) * | 2008-09-22 | 2012-10-03 | 株式会社日立製作所 | 無線基地局及び受信機障害診断方法 |
JP5348050B2 (ja) * | 2010-03-30 | 2013-11-20 | 富士通株式会社 | 雑音発生回路及び受信回路 |
CN103686782A (zh) * | 2012-09-19 | 2014-03-26 | 中兴通讯股份有限公司 | 基站诊断系统及基站诊断方法 |
US9065415B1 (en) * | 2014-01-28 | 2015-06-23 | Wilson Electronics, Llc | Configuring signal boosters |
CA2913564A1 (en) * | 2015-11-27 | 2017-05-27 | Telesat Canada | Satellite communications subsystem in-orbit verification system and methodologies |
US10447336B2 (en) * | 2017-03-10 | 2019-10-15 | Skyworks Solutions, Inc. | Transmit loopback path architecture |
CN111880031B (zh) * | 2020-07-14 | 2023-06-30 | 广州橙行智动汽车科技有限公司 | 确定方法、检测方法、服务器和存储介质 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1117629A (ja) * | 1997-06-24 | 1999-01-22 | Nec Corp | 受信機の故障検出回路 |
JP2003037551A (ja) * | 2001-07-25 | 2003-02-07 | Nec Saitama Ltd | 無線基地局システムの受信部監視システム及び監視方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1048135A1 (en) * | 1998-07-27 | 2000-11-02 | Nokia Networks Oy | Testing in an rf communication system |
JP2001127715A (ja) | 1999-10-28 | 2001-05-11 | Nec Corp | 障害検出回路 |
JP3522225B2 (ja) | 2001-02-22 | 2004-04-26 | 埼玉日本電気株式会社 | 無線装置およびその受信故障検出方法 |
-
2005
- 2005-05-12 JP JP2005139711A patent/JP4373361B2/ja not_active Expired - Fee Related
- 2005-12-19 WO PCT/JP2005/023286 patent/WO2006120777A1/ja active Application Filing
- 2005-12-19 CN CN2005800497579A patent/CN101176283B/zh not_active Expired - Fee Related
- 2005-12-19 US US11/914,264 patent/US8082006B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1117629A (ja) * | 1997-06-24 | 1999-01-22 | Nec Corp | 受信機の故障検出回路 |
JP2003037551A (ja) * | 2001-07-25 | 2003-02-07 | Nec Saitama Ltd | 無線基地局システムの受信部監視システム及び監視方法 |
Also Published As
Publication number | Publication date |
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JP4373361B2 (ja) | 2009-11-25 |
JP2006319616A (ja) | 2006-11-24 |
CN101176283A (zh) | 2008-05-07 |
CN101176283B (zh) | 2011-05-18 |
US20090170560A1 (en) | 2009-07-02 |
US8082006B2 (en) | 2011-12-20 |
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