JP5167972B2 - Delay measurement method and radio base station apparatus - Google Patents

Description

  The present invention relates to a delay measurement method and a radio base station apparatus for a radio base station apparatus in which a radio apparatus control section and a radio apparatus section to which a main signal is supplied from a main signal processing section are connected.

  A radio base station apparatus of a mobile communication system is separated into a REC (Radio Equipment Control) unit and one or a plurality of RE (Radio Equipment: radio device) units as an extension station, and the REC unit and each RE. Some parts are connected to each other with a cable.

  Here, the REC unit and each RE unit are connected by an optical or electric cable defined by CPRI (Common Public Radio Interface). The signal delay amount between the REC unit and each RE unit is adjusted in the REC unit so as to be the same (maximum delay time).

  FIG. 1 shows a configuration diagram of an example of a conventional radio base station apparatus. In the figure, the radio base station apparatus has a main signal processing unit 11, a REC unit 12, and an RE unit 13. The REC unit 12 and the RE unit 13 are connected by a cable 14.

  The delay measurement unit 12a in the REC unit 12 measures the delay of the signal along the path from the terminal A to the RE unit 13 and back to the terminal B, and the delay times of the delay adjustment units 12b and 12c according to the measured delay time. Is set. The delay measurement unit 12a adjusts the delay adjustment units 12b and 12c so that the total of the measured delay time and the delay time of the delay adjustment units 12b and 12c becomes a fixed time (maximum delay time).

  As a method for confirming the functions of the delay measurement unit 12a and the delay adjustment units 12b and 12c in the shipping test, the delay adjustment unit 12b is used with a short cable 14a as the cable 14 as shown in FIG. , 12c is read and checked, and the delay times of the delay adjusting units 12b, 12c are set in a state where a long cable 14b is used as the cable 14, as shown in FIG. The register values to be determined are read and confirmed to confirm the functions of the delay measurement unit 12a and the delay adjustment units 12b and 12c.

The transmission delay amount due to the length of the cable connecting between the control device and the plurality of radio base station devices is automatically measured by the ping-pong transmission signal, and the timing of the signal arriving at each base station is adjusted by adjusting the timing of the ping-pong transmission signal. A technique for controlling to be the same is known (for example, see Patent Document 1).
JP 2005-150931 A

  In the conventional configuration shown in FIG. 1, in the main signal processing unit 11, when the main signal supplied from the REC unit 12 is returned by the RE unit 13 and supplied to the REC unit 12, the main signal processing unit 11 to the REC unit The amount of delay generated in the REC unit 12 and the RE unit 13 until the main signal output to 12 returns to the main signal processing unit 11 cannot be checked.

  For this reason, when a field failure (failure during operation) occurs in which the delay amount generated in the REC unit 12 and the RE unit 13 exceeds an allowable amount, the main signal is not obtained in the main signal processing unit 11, and thus the main signal is not obtained. Although an error such as a signal loss occurs, there is a problem that the cause of the error due to a delay failure cannot be investigated.

  When the functions of the delay measurement unit 12a and the delay adjustment units 12b and 12c are confirmed by the method shown in FIG. 2, the short cable 14a shown in FIG. 2A and the long cable 14b shown in FIG. Since the values of the registers of the delay adjustment units 12b and 12c have to be read in each state, the test efficiency is poor.

  It is an object of the disclosed method to be able to measure the delay amount of signals between the wireless device control unit and the wireless device unit with a simple configuration.

A delay measurement method according to an embodiment of the disclosure is a delay measurement method for a radio base station apparatus in which a radio device control unit and a radio device unit to which a main signal is supplied from a main signal processing unit are connected.
Connect a test jig to the wireless device control unit,
The wireless device control unit detects the leading pattern of the main signal frame and supplies the detection signal to the test jig, and the leading position of the main signal frame in the control signal of the wireless signal frame to be converted from the main signal frame Set a specific control signal indicating and supply to the wireless device unit,
A leading pattern is inserted into the main signal frame to be converted from the radio signal frame folded back by the radio device unit in the radio device control unit in synchronization with a specific control signal of the radio signal frame, and then the test jig is inserted into the test jig. Supply
A first time from when the main signal frame is supplied from the main signal processing unit to the wireless device control unit by the test jig until the detection signal is supplied, and after the detection signal is supplied A second time until a leading pattern synchronized with the specific control signal of the main signal frame is obtained is measured, and delay times in the wireless device control unit and the wireless device unit are measured.

A radio base station apparatus according to an embodiment of the disclosure is a radio base station apparatus in which a radio device control unit and a radio device unit to which a main signal is supplied from a main signal processing unit are connected,
The wireless device control unit
And detecting means for supplying a detection signal by detecting the leading pattern of the main signal frame to the test fixture,
Specific control signal setting means for setting a specific control signal indicating a head position of the main signal frame to a control signal of a radio signal frame to be converted from the main signal frame and supplying the control signal to the wireless device unit;
Leading pattern insertion means for inserting a leading pattern in synchronization with a specific control signal of the wireless signal frame into a main signal frame to be converted from the wireless signal frame turned back by the wireless device unit and supplying the leading pattern to the test jig; Have.

  According to the present embodiment, it is possible to measure the signal delay amounts of the wireless device control unit and the wireless device unit with a simple configuration.

  Embodiments will be described below with reference to the drawings.

<Pseudo delay amount setting>
FIG. 3 shows a configuration of an embodiment of a test jig and a radio base station apparatus when setting a pseudo delay amount. In the figure, the test jig 20 is connected to the REC unit 30, and the REC unit 30 is connected to the RE unit 50 by a cable 40. Note that the RE unit 50 is wirelessly connected to the wireless terminal 60.

  The test jig 20 includes a test setting transmission unit 21 that sets a pseudo delay amount and a delay measurement value check unit 22 that checks the delay amount.

  The test setting transmission unit 21 supplies the pseudo delay amount set in the RE unit 50 to the signal conversion unit 32 through the control line 32a. As a result, the signal conversion unit 32 generates a CPRI frame for a delay amount setting request and supplies the CPRI frame from the delay measurement unit 33 to the RE unit 50 via the cable 40.

  The RE unit 50 includes a delay setting unit 51, variable delay buffers 53 and 54, and a return line 55. The delay setting unit 51 extracts a delay amount setting request from the CPRI frame supplied from the REC unit 30, and sets the pseudo delay amount specified by the delay amount setting request in the variable delay buffers 53 and 54, respectively.

  Further, the delay setting unit 51 generates a CPRI frame of a delay amount setting response for notifying the pseudo delay amount set in the variable delay buffers 53 and 54, and returns it to the REC unit 30 via the cable 40. The CPRI frame of the delay amount setting response is supplied from the delay measuring unit 33 to the signal converting unit 32. The signal converting unit 32 extracts a pseudo delay amount from the CPRI frame of the delay amount setting response, and a control signal indicating the pseudo delay amount Is returned to the test setting transmission unit 21 through the control line 32a.

  Also, for example, a main signal frame in HDLC (High-Level Data Link Control) format or Ethernet (registered trademark) format is supplied from the delay measurement value check unit 22 to the REC unit 30, and passes through the delay adjustment unit 31 to the signal conversion unit 32. To be supplied. For example, the signal conversion unit 32 converts (maps) a main signal frame in HDLC format into a CPRI frame that is a radio signal frame in CPRI format, and supplies the converted signal to the RE unit 50 from the delay measurement unit 33 via the cable 40.

  The RE unit 50 extracts the main signal from the CPRI frame and outputs it from the antenna, and also extracts the CPRI control signal from the CPRI frame and supplies it to the variable delay buffer 53. The CPRI control signal passes through the variable delay buffer 53, the return line 55, and the variable delay buffer 54, and is then used as the CPRI control signal of the CPRI frame that supplies the main signal received by the antenna to the REC unit 30. And supplied to the REC unit 30.

  This CPRI frame is supplied from the delay measurement unit 33 of the REC unit 30 to the signal conversion unit 32, converted (demapped) into, for example, a delay amount setting response in the HDLC format, and the delay measurement of the test jig 20 via the delay adjustment unit 34. The value is supplied to the value check unit 22.

<Delay measurement>
FIG. 4 shows a configuration of an embodiment of a main signal processing card and a radio base station apparatus during delay measurement. In the figure, the same parts as those in FIG.

  In FIG. 4, the test jig 20 and the plurality of main signal processing cards 70 are connected to the REC unit 30, and the REC unit 30 is connected to the RE unit 50 by a cable 40.

  The reference signal for synchronization control generated in any one of the plurality of main signal processing cards 70 is supplied to the other main signal processing card 70, the test jig 20, and the REC unit 30, respectively. The test jig 20 is synchronized.

  The main signal selection unit 35 in the REC unit 30 selects a main signal supplied from a plurality of main signal processing cards 70 and supplies the main signal to the delay adjustment unit 31, and also receives main signals from other main signal processing cards. The data is supplied to another CPRI link (not shown). The main signal is, for example, a frame with a period of several msec to 10 msec, and a frame synchronization pattern as a head pattern is provided at the head of each frame.

  The delay adjustment unit 31 extracts the frame synchronization pattern and supplies it to the signal conversion unit 32 without delay, and delays the main signal frame including the frame synchronization pattern and supplies it to the signal conversion unit 32.

  The signal conversion unit 32 converts (maps), for example, a main signal frame in HDLC format into a CPRI frame that is a radio signal frame in CPRI format, and supplies it as a downstream signal from the delay measurement unit 33 to the RE unit 50 via the cable 40. To do.

  At this time, the frame synchronization pattern of the main signal frame is not mapped to the CPRI frame, but the signal conversion unit 32 extracts the timing of the control signal in the CPRI frame by the delay adjustment unit 31 and is not delayed. Synchronize with the timing. This is for maintaining a wireless connection with the wireless terminal 60. The signal conversion unit 32 generates a frame head position detection signal and supplies it to the delay measurement unit 33 when a frame synchronization pattern in the main signal frame is detected.

  The delay measurement unit 33 generates a head pattern detection pulse from the frame head position detection signal, and supplies the head pattern detection pulse to the test jig 20 using the control line 33a.

  Also, the CPRI frame as an uplink signal supplied from the RE unit 50 is supplied from the delay measurement unit 33 to the signal conversion unit 32, converted (demapped) into a main signal frame, and supplied to the delay adjustment unit 34.

  The delay adjustment unit 34 delays the main signal frame and supplies it to the main signal selection unit 36. The delay adjustment units 31 and 34 adjust the delay amount based on a preset maximum delay time (system parameter value).

  The main signal selection unit 36 selects a main signal supplied from the delay adjustment unit 34 and another CPRI link (not shown) and supplies the selected main signal to one of the plurality of main signal processing cards 70. At this time, the main signal selection unit 36 supplies the main signal supplied from the delay adjustment unit 34 to one of the plurality of main signal processing cards 70 and to the test jig 20.

  FIG. 5 shows a configuration of a modification of the embodiment of the main signal processing card and the radio base station apparatus during delay measurement. Here, the difference from FIG. 4 is that the timing signal generated by the timing generator 80 is supplied to the test jig 20 and the main signal processing card 70, and the test jig 20 and the main signal processing card 70 are synchronized. It is a point. The REC unit 30 is supplied with the reference signal generated by the main signal processing card 70.

<Explanation of delay measurement>
6 to 8 show signal timing charts of the respective units in FIG. 7 and 8, the time axis of FIG. 6 is shown in an enlarged manner.

  At the time of this delay measurement, the delay amounts of the variable delay buffers 53 and 54 of the RE unit 50 are set to zero.

  Here, in the main signal processing card 70, the frame synchronization at the head of the frame of the reference signal shown in FIGS. 6A and 7A and the main signal shown in FIGS. 6B and 7B. The pattern has the same timing. The reference signal is supplied to each part of the REC unit 30 without delay, but the main signal is delayed by the main signal selection unit 35, and the frame synchronization pattern at the head of the main signal supplied to the delay adjustment unit 31 is shown in FIG. As shown in (C) and FIG. 7 (C).

  Furthermore, since the main signal is delayed by the delay adjustment unit 31 and the signal conversion unit 32, the leading position of the main signal in the delay measurement unit 33 is as shown in FIGS. 6D and 7D. In FIG. 7D, the leading position of the main signal is delayed by 11 bytes with respect to the reference signal.

  The delay measuring unit 33 generates the leading pattern detection pulse shown in FIGS. 6E and 7E at the leading position of the main signal in FIGS. 6D and 7D to generate the test jig 20. To supply.

  The test jig 20 knows the delay amount A of the main signal by the main signal selection unit 35, the delay adjustment unit 31, and the signal conversion unit 32 by measuring the time from the timing of the reference signal to the timing of the leading pattern detection pulse. be able to.

  The signal converter 32 maps the main signal frame (excluding the frame synchronization pattern) to the CPRI frame (radio signal frame). Here, FIG. 8A shows both the position of the frame synchronization pattern in FIG. 7C and the start position of the main signal in FIG. 7D.

  When the signal conversion unit 32 maps the main signal to the CPRI frame, the signal conversion unit 32 sets the CPRI control signal indicated by satin in FIG. 8B in synchronization with the position of the frame synchronization pattern shown in FIG. With this as a reference, the CPRI control signal is set at a predetermined period, and the main signal is mapped between the CPRI control signals. Note that the CPRI control signal at the beginning of the frame and the CPRI control signal other than the beginning of the frame shown in FIG. 8 (B) are different in part of the code of the CPRI control signal. Other CPRI control signals.

  The CPRI frame is delayed by the cable 40 and the RE unit 50 and supplied to the delay measurement unit 33 again. The CPRI frame supplied to the delay measurement unit 33 is as shown in FIG. 6 (F) and FIG. 8 (C).

  Further, the signal converter 32 demaps the CPRI frame to the main signal frame. At that time, a frame synchronization pattern is inserted at the timing of the CPRI control signal at the head of the frame.

  The main signal frame into which the frame synchronization pattern is inserted is delayed by the delay adjustment unit 34 to be as shown in FIGS. 6G and 8D, and further supplied from the main signal selection unit 36 to the test jig 20. 6 (H) and FIG. 8 (E) are delayed by a fixed delay amount.

  The test jig 20 measures the time from the timing of the leading pattern detection pulse shown in FIG. 7 (E) to the timing of detecting the leading pattern of the main signal frame shown in FIGS. 6 (H) and 8 (E). Thus, the delay amount B of the main signal by the cable 40, the return line 55 of the RE unit 50, the delay measuring unit 33, the signal converting unit 32, the delay adjusting unit 34, and the main signal selecting unit 36 can be known.

  Note that the portion where the delay amount A and the delay amount B shown in FIG. 6 (E) overlap is delayed by the delay adjustment unit 31 shown in FIG. 6 (D), whereas the frame head in FIG. 8 (B). This is because the position of the CPRI control signal is different from the head position of the main signal in FIG. Therefore, the delay amount of the REC unit 30, the cable 40, and the RE unit 50 including the delay amount in the delay adjustment unit 31 is precisely the delay amount (A + B).

  Therefore, by adding the delay amount A and the delay amount B with the test jig 20, the delay amounts of the REC unit 30, the cable 40, and the RE unit 50 can be accurately known.

<Flow chart of delay check processing>
FIG. 9 shows a flowchart of a delay check process executed by the test jig 20. In the figure, the test jig 20 is started in step S1, and the delay amount A is calculated by measuring the time from the timing of the reference signal to the timing of the leading pattern detection pulse in step S2.

  In step S3, the time from the timing of the leading pattern detection pulse shown in FIG. 7 (E) to the timing of detecting the leading pattern of the main signal frame shown in FIGS. 6 (H) and 8 (E) is measured and delayed. The amount B is calculated. In step S4, the delay amount A and the delay amount B are added to calculate the delay amount (A + B) between the REC unit 30 and the cable 40.

  In step S5, the delay amount (A + B) is compared with the maximum delay time given as a system parameter, and the delay amount (A + B) is approximately the value obtained by adding the fixed delay amount of the main signal selectors 35 and 36 to the maximum delay time. If they are not the same, the log information indicating that the delay amount is not possible (NG) is collected in step S6, and this processing is terminated.

  On the other hand, if the delay amount (A + B) is substantially the same as the value obtained by adding the fixed delay amount of the main signal selectors 35 and 36 to the maximum delay time, log information indicating that the delay amount is OK (OK) is collected in step S7. This process ends.

<Flowchart of pseudo delay variable check process>
FIG. 10 shows a flowchart of the pseudo delay amount variable check process executed by the test jig 20. In the figure, the test jig 20 is started up in step S11, and the pseudo delay amounts of the variable delay buffers 53 and 54 are set to 0 in step S12.

  In step S13, the delay time A is calculated by measuring the time from the timing of the reference signal to the timing of the leading pattern detection pulse, further the delay amount B is calculated, and the delay amount (A + B) is calculated.

  In step S14, the delay amount (A + B) is compared with a value obtained by adding the fixed delay amount of the main signal selectors 35 and 36 to the maximum delay time, and it is determined whether or not they substantially match. If they match, it is determined in step S15 whether or not the pseudo delay amount is a preset maximum value. If the pseudo delay amount is smaller than the maximum value, the process proceeds to step S16.

  In step S16, the pseudo delay amount is increased by a predetermined amount α and set in the variable delay buffers 53 and 54, and the process proceeds to step S13.

  If the pseudo delay amount is greater than or equal to the preset maximum value in step S15, log information indicating that the delay amount is acceptable (OK) is collected in step S17, and this process ends.

  If the delay amount (A + B) does not match the value obtained by adding the fixed delay amount of the main signal selectors 35 and 36 to the maximum delay time in step S14, log information indicating that the delay amount is not allowed (NG) is collected in step S16. Then, this process ends.

  FIG. 11 shows the delay amount of each part of the radio base station apparatus when the pseudo delay amount is set to zero. In the figure, T1 represents the delay of the main signal selection unit 35, T2a represents the delay of the delay adjustment unit 31, and T3a and T5a are delays due to the pseudo delay amounts (= 0) of the cable 40 and the variable delay buffers 53 and 54. T4a represents the delay of the RE unit 50 not including the pseudo delay amount, T6a represents the delay of the delay adjustment unit 34, and T7 represents the delay of the main signal selection unit 36.

  FIG. 12 shows the delay amount of each part of the radio base station apparatus when the pseudo delay amount is set to the maximum value. In the figure, T1 represents the delay of the main signal selection unit 35, T2b represents the delay of the delay adjustment unit 31, and T3b and T5b represent delays due to the pseudo delay amounts (= 0) of the cable 40 and the variable delay buffers 53 and 54. T4b represents the delay of the RE unit 50 not including the pseudo delay amount of the variable delay buffers 53 and 54, T6b represents the delay of the delay adjustment unit 34, and T7 represents the delay of the main signal selection unit 36. .

  Here, if the delay amounts of the delay adjustment units 31 and 34 are adjusted normally, T2a + T3a + T4a + T5a + T6a = maximum delay time (system parameter value) and T2b + T3b + T4b + T5b + T6b = maximum delay time (system parameter value). .

<Attaching the test jig to the REC unit>
Next, a method for attaching the test jig 20 to the REC unit 30 will be described.

  In the first embodiment with the test jig attached shown in FIG. 13, among the main signal processing cards 70-1 to 70-n connected to the REC unit 30, the test jig 20 is used instead of the main signal processing card 70-n. Is connected to the REC unit 30.

  In the second embodiment with the test jig attached shown in FIG. 14, among the main signal processing cards 70-1 to 70-n connected to the REC unit 30, the spare main signal processing card 70-n is connected in parallel. The test jig 20 is connected to the REC unit 30. Since the spare main signal processing card 70-n is not used during normal operation, the test jig 20 is substantially connected to the REC unit 30.

  In the third embodiment with the test jig attached as shown in FIG. 15, each of the main signal processing cards 71-1 to 71-n has a test jig function 25. The test jig function 25 is all functions as the test jig 20. Since the spare main signal processing card 71-n is not normally used, the test jig function 25 in the main signal processing card 71-n is connected to the REC unit 30 to perform a check process.

  As described above, according to the above embodiment, the test jig 20 calculates the delay amount A and the delay amount B without stopping the main signal, and the delay amount (A + B) of the REC unit 30, the cable 40, and the RE unit 50. ) In the field operation, the test jig 20 is mounted on the main signal processing unit 70 or the test jig 20 is connected in place of the main signal processing unit 70 Or, by adding, it becomes possible to measure delay even during operation.

  Also, if there is a test function in the REC unit 30, it depends on the reliability of the REC unit 30 itself, so it is not clear whether the measurement is really correct, but the test jig 20 and the REC unit 30 are independent. Therefore, an objective test can be performed between the REC unit 30 and the RE unit 50.

Furthermore, the delay amount of the cable 40 can be changed in a pseudo manner by setting the pseudo delay amounts of the variable delay buffers 53 and 54, and the pseudo delay amount is confirmed by the test jig 20 as a delay amount setting response. can do.
(Appendix 1)
In the delay measurement method of the radio base station apparatus connecting the radio equipment control section and the radio equipment section supplied with the main signal from the main signal processing section
Connect a test jig to the wireless device control unit,
The wireless device control unit detects the leading pattern of the main signal frame and supplies the detection signal to the test jig, and the leading position of the main signal frame in the control signal of the wireless signal frame to be converted from the main signal frame Set a specific control signal indicating and supply to the wireless device unit,
A leading pattern is inserted into the main signal frame to be converted from the radio signal frame folded back by the radio device unit in the radio device control unit in synchronization with a specific control signal of the radio signal frame, and then the test jig is inserted into the test jig. Supply
A first time from when the main signal frame is supplied from the main signal processing unit to the wireless device control unit by the test jig until the detection signal is supplied, and after the detection signal is supplied Measuring a delay time in the wireless device control unit and the wireless device unit by measuring a second time until a head pattern synchronized with the specific control signal of the main signal frame is obtained; Delay measurement method.
(Appendix 2)
In the delay measurement method according to attachment 1,
A variable delay means is provided in the wireless device section,
A delay measuring method, wherein the delay amount of the variable delay means is set from the test jig.
(Appendix 3)
In the wireless base station device connecting the wireless device control unit and the wireless device unit supplied with the main signal from the main signal processing unit,
The wireless device control unit
Detection means for detecting a leading pattern of the main signal frame and supplying a detection signal to the test jig;
First conversion means for setting a specific control signal indicating a head position of the main signal frame to a control signal of a radio signal frame to be converted from the main signal frame and supplying the control signal to the wireless device unit;
Second conversion means for inserting a leading pattern in synchronization with a specific control signal of the radio signal frame into a main signal frame to be converted from the radio signal frame turned back by the radio equipment unit and supplying the second signal to the test jig; ,
A radio base station apparatus comprising:
(Appendix 4)
In the radio base station apparatus according to attachment 3,
The wireless device section is
A radio base station apparatus comprising variable delay means for setting a delay amount from the test jig.
(Appendix 5)
In the radio base station apparatus according to appendix 3 or 4,
The wireless device control unit
First delay adjusting means for adjusting and outputting a delay amount of a main signal frame supplied from the main signal processing unit;
Second delay adjusting means for adjusting and outputting the delay amount of the main signal frame supplied from the second converting means;
A radio base station apparatus comprising:

It is a block diagram of an example of the conventional radio base station apparatus. It is a figure for demonstrating the confirmation method of the conventional delay measurement function. It is a figure which shows the structure of one Embodiment of the test jig | tool at the time of pseudo delay amount setting, and a wireless base station apparatus. It is a figure which shows the structure of one Embodiment of the main signal processing card | curd at the time of a delay measurement, and a wireless base station apparatus. It is a figure which shows the structure of the modification of one Embodiment of the main signal processing card | curd and radio | wireless base station apparatus at the time of a delay measurement. 6 is a signal timing chart of each part in FIG. 5. 6 is a signal timing chart of each part in FIG. 5. 6 is a signal timing chart of each part in FIG. 5. It is a flowchart of the delay check process which a test jig performs. It is a flowchart of a pseudo delay amount variable check process executed by a test jig. It is a figure which shows the delay amount of each part of a radio base station apparatus when a pseudo delay amount is set to 0. It is a figure which shows the delay amount of each part of a radio base station apparatus at the time of setting a pseudo delay amount to the maximum value. It is a figure which shows 1st Embodiment of a test jig attachment. It is a figure which shows 2nd Embodiment of a test jig attachment. It is a figure which shows 3rd Embodiment of a test jig attachment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 Test jig 21 Test setting transmission part 22 Delay measurement value check part 30 REC part 31, 34 Delay adjustment part 32 Signal conversion part 33 Delay measurement part 35, 36 Main signal selection part 40 Cable 50 RE part 51 Delay setting part 53, 54 Variable Delay Buffer 55 Return Line 60 Wireless Terminal 70 Main Signal Processing Card 80 Timing Generator

Claims (4)

In the delay measurement method of the radio base station apparatus connecting the radio equipment control section and the radio equipment section supplied with the main signal from the main signal processing section
Connect a test jig to the wireless device control unit,
The wireless device control unit detects the leading pattern of the main signal frame and supplies the detection signal to the test jig, and the leading position of the main signal frame in the control signal of the wireless signal frame to be converted from the main signal frame Set a specific control signal indicating and supply to the wireless device unit,
A leading pattern is inserted into the main signal frame to be converted from the radio signal frame folded back by the radio device unit in the radio device control unit in synchronization with a specific control signal of the radio signal frame, and then the test jig is inserted into the test jig. Supply
A first time from when the main signal frame is supplied from the main signal processing unit to the wireless device control unit by the test jig until the detection signal is supplied, and after the detection signal is supplied Measuring a delay time in the wireless device control unit and the wireless device unit by measuring a second time until a head pattern synchronized with the specific control signal of the main signal frame is obtained; Delay measurement method. The delay measurement method according to claim 1,
A variable delay means is provided in the wireless device section,
A delay measuring method, wherein the delay amount of the variable delay means is set from the test jig. In the wireless base station device connecting the wireless device control unit and the wireless device unit supplied with the main signal from the main signal processing unit,
The wireless device control unit
And detecting means for supplying a detection signal by detecting the leading pattern of the main signal frame to the test fixture,
First conversion means for setting a specific control signal indicating a head position of the main signal frame to a control signal of a radio signal frame to be converted from the main signal frame and supplying the control signal to the wireless device unit;
Second conversion means for inserting a leading pattern in synchronization with a specific control signal of the radio signal frame into a main signal frame to be converted from the radio signal frame turned back by the radio equipment unit and supplying the second signal to the test jig; ,
A radio base station apparatus comprising: The radio base station apparatus according to claim 3,
The wireless device section is
A radio base station apparatus comprising variable delay means for setting a delay amount from the test jig.

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