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CN102244549B - A kind of TIS method of testing of WCDMA mobile terminal - Google Patents

A kind of TIS method of testing of WCDMA mobile terminal Download PDF

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Publication number
CN102244549B
CN102244549B CN201110235824.3A CN201110235824A CN102244549B CN 102244549 B CN102244549 B CN 102244549B CN 201110235824 A CN201110235824 A CN 201110235824A CN 102244549 B CN102244549 B CN 102244549B
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mobile terminal
base station
power
sensitivity
wcdma mobile
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CN102244549A (en
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白剑
王柯
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Linyi High Tech Talent Education Development Group Co ltd
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Huizhou TCL Mobile Communication Co Ltd
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Priority to CN201110235824.3A priority Critical patent/CN102244549B/en
Publication of CN102244549A publication Critical patent/CN102244549A/en
Priority to PCT/CN2012/079870 priority patent/WO2013023546A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/06—Testing, supervising or monitoring using simulated traffic

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

The invention discloses a kind of TIS method of testing of WCDMA mobile terminal; The TIS method of testing of WCDMA mobile terminal provided by the present invention, the method of the sensitivity of any position under carrying out quick position radiation owing to using CPICH RSCP value corresponding to the lower sensitivity of WCDMA terminal conduction, the sensitivity search time of each angle in WCDMA TIS test can be improved, thus improve the overall measuring speed of WCDMA TIS.And the method for the sensitivity (Sensitivity) of any position under the CPICH RSCP value of sensitivity (Sensitivity) correspondence carrys out quick position radiation under use WCDMA terminal radiation pattern any point, sensitivity (Sensitivity) search time of each angle in TIS test can be improved, thus improve the WCDMA mobile terminal testing efficiency of TIS.

Description

TIS test method of WCDMA mobile terminal
Technical Field
The invention relates to the technical field of mobile communication, in particular to a TIS test method of a WCDMA mobile terminal.
Background
As is known, The current WCDMA mobile terminal OTA (Over The Air: test by Air conduction) test system has huge investment and complex test method. The OTA test (test by air conduction) includes two main test criteria: total Radiated Power (TRP: Total Radiated Power) and Total Isotropic Sensitivity (TIS: Total Isotropic Sensitivity). The time occupied by the TIS test is the longest, and about 1 hour of test time is needed for one comprehensive single-channel TIS test. Compared with the total investment of millions of RMB in an OTA test system, the more the test time is, the more the cost is. Meanwhile, due to the huge cost, many OTA laboratories cannot be built in a test certification laboratory or a research and development institution. Therefore, OTA darkroom is necessarily a scarce resource. If the OTA laboratory is occupied for a long time, queuing of other items to be tested can be caused, and further, the research and development time cost is increased.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a TIS test method for a WCDMA mobile terminal, which can greatly shorten the TIS test time of the WCDMA mobile terminal and improve the TIS test efficiency of the WCDMA mobile terminal, aiming at the above defects in the prior art.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a TIS test method of a WCDMA mobile terminal comprises the following steps:
firstly, the first step is toThe WCDMA mobile terminal and the base station emulator are directly connected by using a radio frequency cable for conducting a conduction test, the WCDMA mobile terminal determines that the WCDMA mobile terminal measures CPICH RSCP values of the chip power of the navigation channel contained in the base station sending signal when the WCDMA mobile terminal reaches the error rate standard under the conduction test, and the WCDMA mobile terminal measures CPICH RSCP values of the chip power of the navigation channel contained in the base station sending signal under the conduction test(ii) a The method further comprises the steps of:
step 1: starting up a WCDMA mobile terminal, placing the WCDMA mobile terminal at a rotary table fixing position of an OTA test system, and connecting the WCDMA mobile terminal to a base station simulator;
step 2: the OTA test system controls the Theta axis and Phi axis of the rotary table to be transmitted to a first preset position;
step 3: the OTA test system controls the darkroom receiving and transmitting antenna to rotate to the horizontal position;
step 4: OTA test system controls base station emulator to initial power；
Step 5: measuring the error rate of the WCDMA mobile terminal; and testing the output power of the base station simulator at the moment to be set as the initial powerIn the meantime, the WCDMA mobile terminal measures CPICH RSCP the chip power value of the navigation channel contained in the base station transmission signal, and sets it as；
Step 6: when the error rate of the WCDMA mobile terminal does not exceed the standard, the OTA test system controls the base station simulator to dropThe low transmission power is: =-（-) + 1; wherein,the power, which represents the next step the base station emulator should set, is defined as the expected sensitivity.Initial power for base station simulator test;indicating that the emulator output power at the base station is set to the initial powerWhen the mobile terminal of WCDMA measures the chip power of the navigation channel contained in the signal sent by base station;the method comprises the steps that in a conduction test, when a WCDMA mobile terminal reaches sensitivity, the WCDMA mobile terminal measures the chip power of a navigation channel contained in a base station sending signal;
step 7: measuring the error rate of the WCDMA mobile terminal at the moment;
step 8: when the error rate of the WCDMA mobile terminal is judged not to exceed the standard, the transmitting power of the base station simulator is reduced by a preset value, and when the error rate of the WCDMA mobile terminal exceeds the standard, the transmitting power of the base station simulator is increasedAdding the preset value and retesting; recording the transmitting power of the base station simulator at the moment, namely the sensitivity of the position
Step 9: OTA test system controls darkroom receiving and transmitting antenna to rotate to vertical position, and step4-8 is repeated
Step 10: the test system controls the transmission of the turntable Theta and Phi shafts to a second preset position, and Step3-9 is repeated;
step 11: test system control turntable Theta axis every 300Phi axis every 300And (3) testing once, and after testing of all angles of the Theta and Phi axes of the rotary table is finished, according to a formula:
weighted statistics of sensitivity at all locationsThereby obtaining a final TIS;
wherein，The angles of the Theta and Phi axes, respectively, EIS is the sensitivityCompensating the power value of the angle darkroom receiving antenna after gain, wherein the unit is tile; n and M are the number of test points on the Theta and Phi axes respectively,horizontal rotation of receiving antenna in darkroomAnd the sensitivity of the vertical position test.
The TIS test method of the WCDMA mobile terminal is characterized in that the error rate of the WCDMA mobile terminal is not over standard when being less than 0.1%.
The TIS test method of the WCDMA mobile terminal, wherein the predetermined value in the Step8 is 0.5 dB.
The TIS test method of the WCDMA mobile terminal is characterized in that the Theta axis of the first preset position and the Theta axis of the second preset position are separated by 30 DEG0Phi axes spaced 30 apart0。
The TIS test method of the WCDMA mobile terminal sets the number of test points of Theta and Phi axes to be 12 points.
A TIS test method of a WCDMA mobile terminal comprises the following steps:
sp 1: starting up a WCDMA mobile terminal, placing the WCDMA mobile terminal at a rotary table fixing position of an OTA test system, and connecting the WCDMA mobile terminal to a base station simulator;
sp 2: the OTA test system controls the Theta axis and Phi axis of the rotary table to be transmitted to a first preset position;
sp 3: the OTA test system controls the darkroom receiving and transmitting antenna to rotate to the horizontal position;
sp 4: OTA test system controls base station emulator to initial power；
Sp 5: measuring the error rate of the WCDMA mobile terminal;
sp 5-1: when the error rate of the WCDMA mobile terminal does not exceed the standard, the OTA test system controls the base station simulator to reduce a preset value transmitting power;
sp 5-2: measuring the error rate of the WCDMA mobile terminal at the moment;
sp 5-3: when the BER of the WCDMA mobile terminal does not exceed the standard, repeating Sp5-2 and Sp5-3 until the error rate exceeds the standard; and recording the transmitting power of the base station simulator just exceeding the standard, namely the sensitivity of the position(ii) a And obtains the chip power CPICH RSCP of the navigation channel contained in the signal transmitted by the base station measured by the WCDMA mobile terminal at this time as；
Sp 5-4: the OTA test system controls the darkroom receiving and sending antenna to rotate to the vertical position, and the sensitivity of the mobile terminal at the moment is measured and obtained(ii) a And testing and obtaining the output power of the base station simulator at the moment and setting the output power as the initial powerAt that time, the WCDMA mobile terminal measures the chip power of the navigation channel contained in the base station transmission signal as；
Sp 5-5: when the sensitivity of the WCDMA mobile terminal does not exceed the standard, the OTA test system controls the base station emulator to reduce the transmission power and sets the transmission power as follows:
=-（-) + 1; wherein,indicating the power that the base station simulator should set next, defined as the expected sensitivity;initial power for base station simulator test;indicating that the emulator output power at the base station is set to the initial powerWhen the mobile terminal of WCDMA measures the chip power of the navigation channel contained in the signal sent by base station;the method comprises the steps that in a conduction test, when a WCDMA mobile terminal reaches sensitivity, the WCDMA mobile terminal measures the chip power of a navigation channel contained in a base station sending signal;
sp 5-6: measuring the error rate of the mobile terminal;
sp 5-7: when the error rate does not exceed the standard, reducing the power of a preset value base station, if the error rate exceeds the standard, increasing the power of the preset value base station, and retesting; and recording the transmitting power of the base station simulator just exceeding the standard, namely the sensitivity of the position；
Sp5-8, controlling the darkroom transmitting and receiving antenna to rotate to the horizontal position by the OTA test system;
sp 5-9: OTA test system controls base station emulator to initial power；
Sp 5-10: measuring WCDMA movementThe error rate of the terminal; and testing the output power of the base station simulator at the moment to be set as the initial powerAt that time, the WCDMA mobile terminal measures the chip power of the navigation channel contained in the base station transmission signal as；。
Sp 6: when the error rate of WCDMA mobile terminal is not over standard, OTA test system controls base station emulator to reduce transmission power to =-（-）+1；
Wherein,indicating the power that the base station simulator should set next, defined as the expected sensitivity;initial power for base station simulator test;indicating that the emulator output power at the base station is set to the initial powerWhen the mobile terminal of WCDMA measures the chip power of the navigation channel contained in the signal sent by base station;the method comprises the steps that in a conduction test, when a WCDMA mobile terminal reaches sensitivity, the WCDMA mobile terminal measures the chip power of a navigation channel contained in a base station sending signal;
sp 7: measuring the error rate of the WCDMA mobile terminal;
step 8: when the error rate of the WCDMA mobile terminal is judged not to exceed the standard, reducing a preset value for the transmitting power of the base station simulator, and when the error rate of the WCDMA mobile terminal exceeds the standard, increasing the preset value for the transmitting power of the base station simulator and retesting; recording the transmitting power of the base station simulator at the moment, namely the sensitivity of the position；
Sp 9: the OTA test system controls the darkroom transceiving antenna to rotate to a vertical position, and sp4-8 is repeated;
sp 10: the test system controls the transmission of the turntable Theta and Phi shafts to a second preset position and repeats Sp 3-9;
sp 11: test system control turntable Theta axis every 300Phi axis every 300And (3) testing once, and after testing of all angles of the Theta and Phi axes of the rotary table is finished, according to a formula:
weighted statistics of sensitivity at all locationsThereby obtaining a final TIS;
wherein，The angles of the Theta and Phi axes, respectively, EIS is the sensitivityCompensating the power value of the angle darkroom receiving antenna after gain, wherein the unit is tile; n and M are the number of test points on the Theta and Phi axes respectively,the sensitivity of the darkroom receiving antenna rotation horizontal and vertical position test is respectively.
The TIS test method of the WCDMA mobile terminal is characterized in that the error rate of the WCDMA mobile terminal is not over standard when less than 0.1%, and the error rate of the WCDMA mobile terminal is over standard when more than or equal to 0.1%.
The TIS test method of the WCDMA mobile terminal, wherein the predetermined value in the step Sp8 is 0.5 dB.
The TIS test method of the WCDMA mobile terminal is characterized in that the Theta axis of the first preset position and the Theta axis of the second preset position are separated by 30 DEG0Phi axes spaced 30 apart0。
The TIS test method of the WCDMA mobile terminal sets the number of test points of Theta and Phi axes to be 12 points.
According to the TIS test method of the WCDMA mobile terminal, which is provided by the invention, the Sensitivity (Sensitivity) search time of each angle in the WCDMA TIS test can be prolonged by using the method of quickly positioning the Sensitivity (Sensitivity) of any position under radiation by using the CPICH RSCP value corresponding to the Sensitivity (Sensitivity) under the conduction of the WCDMA terminal, so that the overall measurement speed of the WCDMA TIS is increased.
And the method for rapidly positioning the Sensitivity (Sensitivity) at any position under radiation by using CPICH RSCP values corresponding to the Sensitivity (Sensitivity) at any point of the radiation mode of the WCDMA terminal can improve the Sensitivity (Sensitivity) search time of each angle in the TIS test, thereby improving the test efficiency of the TIS of the WCDMA mobile terminal.
Drawings
Fig. 1 is a schematic diagram of the OTA darkroom structure according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the TIS test method of the WCDMA mobile terminal provided by the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, which is a schematic view of a typical OTA (Over The Air: test by Air conduction) dark room 100, a WCDMA mobile terminal (device under test) 200 is placed on a turntable 110. This turret 110 has two axes of rotation, respectively designated Theta axis (Theta axis) and Phi axis (Phi axis). The OTA darkroom 100 transceiver antenna 120 can have two directions, horizontal and vertical.
A typical TIS (entire radiating spherical handset receive sensitivity index) test procedure is as follows:
s1: the WCDMA mobile terminal 200 is powered on and connected to the base station emulator. And is placed in a fixed position on the turntable 110.
S2: the test system controls the Theta and Phi axes of the turret 110 to be driven to a certain position.
S3: the test system controls the darkroom transceiver antenna 120 to rotate to a horizontal position.
S4: test system controls base station emulator to initial power. The initial powerThe initial value of each sensitivity search is indicated, and each time the mobile phone is changed to a new position, the base station simulator always starts from the highest transmitting power, gradually reduces the power and guides the bit error rate to exceed the standard.
S5: the Bit Error Rate (BER) of the WCDMA mobile terminal 120 is measured.
S6: if the error rate of the WCDMA mobile terminal does not exceed the standard (the WCDMA standard defines that the BER is less than 0.1 percent, namely the BER does not exceed the standard), the test system controls the base station simulator to reduce the transmitting power.
S7: measuring the sensitivity of the WCDMA mobile terminal 200;
s8: if the sensitivity is not out of specification, repeating S6 and S7 until the error rate is out of specification. Recording the transmitting power of the base station simulator at the moment, namely the sensitivity of the position. Because the terminal to be tested has two rotating shaft positions, the receiving antenna has horizontal and vertical positions. Three subscripts (theta, phi, ANT) are required to represent sensitivity at different positions.
S9: the testing system controls the darkroom transmitting and receiving antenna to rotate to the vertical position, and S4-8 is repeated;
s10: the test system controls the turret Theta and Phi axes to move to another position and repeats S3-9.
S11: after all the angles of the Theta axis and Phi axis of the rotary table are tested, weighting and counting all the sensitivities according to a formulaThereby obtaining the final TIS.
In a standard TIS test, the Theta axis (θ axis) is spaced every 300Phi axis (Phi axis) every 300The test was performed once. The TIS calculation formula is as follows:
wherein，The angle of the Theta and Phi axes above; EIS is sensitivityCompensating the power value of the angle darkroom receiving antenna gain, wherein the unit is Watt (Watt); n and M are the number of test points on Theta and Phi axes, respectively, standard Theta is 12 points, Phi is 12 points,the sensitivity of the darkroom receiving antenna rotation horizontal and vertical position test is respectively. Wherein Theta only needs to test half of the data due to the symmetry. The total test points were therefore 6 x 12 x 2=144 points.
Since the time period required for S5 is fixed, the more times S5 is repeated, the longer the total test time will be. In the original algorithm, in order to obtain each sensitivityMultiple repetitions of S5. and sensitivity per angle are requiredThe larger the difference between the initial power and the initial power of the base station simulator is, the more the repetition times are, the longer the total test time is, and the test efficiency of the TIS of the WCDMA mobile terminal cannot be improved.
In order to overcome the above-mentioned drawbacks, the embodiment of the present invention proposes a new TIS test method for WCDMA mobile terminals, each sensitivity of which is differentIt is obtained by repeating S5 only 2-3 times. The specific implementation method is as follows:
first, prior to testing, a conduction test is performed to determine the value of CPICH RSCP when the mobile terminal reaches the ber standard under conduction. The WCDMA mobile terminal and the base station simulator of the conduction test are tested by directly connecting a radio frequency cable. In a WCDMA mobile terminal, the conducted sensitivity refers to the transmit power of the base station emulator when the BER exceeds 0.1%. And CPICH RSCP refers to the WCDMA mobile terminal reporting to the base station emulator that the WCDMA mobile terminal measured the chip power of the navigation channel contained in the base station transmission signal.
Suppose that CPICH RSCP (the chip power of the navigation channel contained in the signal sent by the base station and measured by the WCDMA mobile terminal reported by the WCDMA mobile terminal to the base station emulator) corresponding to the conduction sensitivity of a WCDMA mobile terminal is CPICH RSCP。
The TIS test method of the new WCDMA mobile terminal provided by the invention comprises the following steps:
step 1: the WCDMA mobile terminal is powered on, connected to the base station emulator of the OTA test system, and placed in a fixed position on the turntable.
Step 2: the OTA test system controls the Theta axis (Theta axis) and Phi axis (Phi axis) of the turret 110 to be driven to a first predetermined position.
Step 3: the OTA test system controls the darkroom transceiver antenna 120 to rotate to a horizontal position.
Step 4: OTA test system controls base station emulator to initial power(initial: initial). The initial powerThe initial value of each sensitivity search is indicated, and each time the mobile phone is changed to a new position, the base station simulator always starts from the highest transmitting power, gradually reduces the power and guides the bit error rate to exceed the standard.
Step 5: the BER of the WCDMA mobile terminal is measured. Meanwhile, the output power of the base station simulator is set as the initial power at the moment of testingAt this time, the WCDMA mobile terminal measures CPICH RSCP the chip power of the pilot channel contained in the base station transmission, assumed to be。
Step 6: if the BER of the WCDMA mobile terminal does not exceed the standard, the OTA test system controls the base station simulator to reduce the transmitting power, and the test system sets the transmitting power as follows: =-（-)+1. Wherein,the power, which represents the next step the base station emulator should set, is defined as the expected sensitivity.Initial power for base station simulator test;indicating that the emulator output power at the base station is set to the initial powerWhen the mobile terminal of WCDMA measures the chip power of the navigation channel contained in the signal sent by base station;it is shown that the WCDMA mobile terminal measures the chip power of the navigation channel contained in the base station transmission signal when the WCDMA mobile terminal reaches sensitivity in the conducted test. The main function of +1dB in the formula is to prevent the power of the base station from rapidly dropping to the vicinity of sensitivity, which causes the error rate correction capability of the mobile terminal to exceed the limit, and the terminal enters the decoding unstable state to cause the test error.
Step 7: the BER of the WCDMA mobile terminal is measured, and should be very close to 0.1%.
Step 8: if the BER is not out of the standard, a predetermined value such as 0.5dB base station simulator transmission power is reduced, if out of the standard, the predetermined value such as 0.5dB base station power is increased, and the test is carried out again. Recording the transmitting power of the base station simulator at the moment, namely the sensitivity of the position。
The code error rate of the WCDMA mobile terminal is not over standard when the code error rate is less than or equal to 0.1 percent, and the code error rate of the WCDMA mobile terminal is over standard when the code error rate is more than 0.1 percent
Step 9: the test system controls the darkroom transceiver antenna to rotate to the vertical position and repeats step 4-8.
Step 10: the test system controls the turret Theta and Phi axes to move to the second predetermined position and Step3-9 is repeated.
Step 11: after testing all angles of Theta and Phi axes of the rotary table is finished, carrying out weighted statistics on the sensitivity of all positions according to a formulaThereby obtaining the final TIS.
Wherein Theta axis (Theta axis) is arranged at intervals of 300Phi axis (Phi axis) every 300The test was performed once. The TIS calculation formula is as follows:
wherein，The angle of the Theta and Phi axes above; EIS is sensitivityCompensating the power value of the angle darkroom receiving antenna gain, wherein the unit is Watt (Watt); n and M are the number of test points of Theta and Phi axes respectively, standard Theta is 12 points, Phi is 12 pointsThe sensitivity of the darkroom receiving antenna rotation horizontal and vertical position test is respectively. Wherein Theta only needs to test half of the data due to the symmetry. The total test points were therefore 6 x 12 x 2=144 points.
From the above, in the method of the embodiment of the present invention, eachThe acquisition time of step5 is only required to be repeated three times at most: test once at initial powerAt the expected sensitivityIs tested once atThe vicinity search may be performed once. Thus each can be shortenedThereby reducing the total testing time of the TIS. The Sensitivity (Sensitivity) searching time of each angle in the WCDMA TIS test can be prolonged by using an algorithm for quickly positioning the Sensitivity (Sensitivity) of any position under radiation by using CPICH RSCP values corresponding to the Sensitivity (Sensitivity) under the conduction of the WCDMA terminal, so that the overall measuring speed of the WCDMA TIS is increased.
The TIS test method of WCDMA mobile terminal of the present invention is illustrated as a practical example:
the terminal with one WCDMA measured the sensitivity under the conduction to-109 dBm, in the conduction test, the actual received power of the WCDMA mobile terminal when the WCDMA mobile terminal reaches the sensitivityIs-112 dBm.
The WCDMA mobile terminal is placed in an OTA darkroom and connected to a base station emulator in a radiating mode. The rotary table is controlled to rotate to a certain angle. At the moment, the base station simulator initial powerSet to-57 dBm, measureWas-58 dBm.
From this, the expected sensitivity at this position can be estimated as:=-（-）+1=-57-（-58-（-112））+1=-110dBm。
then, the power of the base station emulator is set to-110 dBm, and the BER is 0.056%.
Then in the prediction of sensitivityThe vicinity search was performed once, i.e., the base station power was reduced by 0.5dB to-110.5 dBm and tested. At this time, the error rate exceeds the standard. Thereby determining the point sensitivityIs-110 dBm.
Of course, there are cases where the sensitivity of the WCDMA mobile terminal in the conduction mode and the power actually received by the WCDMA mobile terminal when the WCDMA mobile terminal reaches the sensitivity in the conduction testIt is inconvenient to test. In this case, the TIS test method of the WCDMA mobile terminal of another embodiment of the present invention may also be used for testing, including the following steps:
sp 1: the WCDMA mobile terminal is powered on, connected to the base station emulator of the OTA test system, and placed in a fixed position on the turntable.
Sp 2: the OTA test system controls the Theta axis (Theta axis) and Phi axis (Phi axis) of the turret 110 to be driven to a first predetermined position.
Sp 3: the OTA test system controls the darkroom transceiver antenna 120 to rotate to a horizontal position.
Sp 4: OTA test system controls base station emulator to initial power(initial: initial). The initial powerThe initial value of each sensitivity search is indicated, and each time the mobile phone is changed to a new position, the base station simulator always starts from the highest transmitting power, gradually reduces the power and guides the bit error rate to exceed the standard.
Sp 5: the BER of the WCDMA mobile terminal is measured.
Sp 5-1: if the bit error rate of the mobile terminal is not over standard (the WCDMA standard defines that the BER is less than 0.1 percent, namely the BER is not over standard), the test system controls the base station simulator to reduce a preset value, such as 0.5dB transmitting power.
Sp 5-2: and measuring the BER of the mobile terminal.
Sp 5-3: if the BER of the WCDMA mobile terminal is not out of limits (the WCDMA standard is defined that the BER is less than 0.1 percent, namely the BER is not out of limits), Sp5-2 and Sp5-3 are repeated until the BER is out of limits. When the signal level just exceeds the standard, recording the transmitting power of the base station simulator at the moment, namely the sensitivity of the position. At the same time, CPICH RSCP (CPICH RSCP means that the WCDMA mobile terminal reports the chip power of the navigation channel contained in the base station transmission signal measured by the WCDMA mobile terminal reported by the WCDMA mobile terminal to the base station emulator) is obtained as。
Sp 5-4: the OTA test system controls the darkroom receiving and sending antenna to rotate to the vertical position, and measures the sensitivity of the mobile terminal at the moment. At the same time, CPICH RSCP at this time was tested and set toI.e. the output power at the base station emulator is set to the initial powerAt this time, the WCDMA mobile terminal measures the chip power of the navigation channel contained in the base station transmission signal.
Sp 5-5: if the sensitivity of the mobile terminal is not out of standard (the WCDMA standard defines that the BER is less than 0.1 percent, namely the BER is not out of standard), the test system controls the base station simulator to reduce the transmitting power. At this time, the test system will set the transmission power as:
=-（-)+1. Wherein,the power, which represents the next step the base station emulator should set, is defined as the expected sensitivity.Initial power for base station simulator test;indicating that the emulator output power at the base station is set to the initial powerWhen the mobile terminal of WCDMA measures the chip power of the navigation channel contained in the signal sent by base station;it is shown that the WCDMA mobile terminal measures the chip power of the navigation channel contained in the base station transmission signal when the WCDMA mobile terminal reaches sensitivity in the conducted test. The main function of +1dB in the formula is to prevent the power of the base station from rapidly dropping to the vicinity of sensitivity, which causes the error rate correction capability of the mobile terminal to exceed the limit, and the terminal enters the decoding unstable state to cause the test error.
Sp 5-6: the BER of the mobile terminal is measured, and the BER should be very close to 0.1% (WCDMA standard defines BER less than 0.1% without exceeding the standard).
Sp 5-7: if the error rate is not out of limits, a predetermined value, such as 0.5dB base station power, is reduced, if out of limits, a predetermined value, such as 0.5dB base station power, is increased, and the test is retested. Recording the transmitting power of the base station simulator at the moment, namely the sensitivity of the position；
Sp 5-8. OTA test system controls darkroom transceiver antenna to rotate to horizontal position.
Sp 5-9: OTA test system controls base station emulator to initial power. The initial powerThe initial value of each sensitivity search is indicated, and each time the mobile phone is changed to a new position, the base station simulator always starts from the initial higher transmitting power, gradually reduces the power and guides the error codeThe rate exceeds the standard.
Sp 5-10: the BER of the WCDMA mobile terminal is measured. At the same time, CPICH RSCP at this time was tested and set toI.e. the output power at the base station emulator is set to the initial powerAt this time, the WCDMA mobile terminal measures the chip power of the navigation channel contained in the base station transmission signal.
Sp 6: if the BER of the WCDMA mobile terminal does not exceed the standard, the OTA test system controls the base station simulator to reduce the transmitting power, and the test system sets the transmitting power as follows: =-（-)+1. Wherein,the power, which represents the next step the base station emulator should set, is defined as the expected sensitivity.Initial power for base station simulator test;indicating that the emulator output power at the base station is set to the initial powerWhen the mobile terminal of WCDMA measures the chip power of the navigation channel contained in the signal sent by base station;it is shown that the WCDMA mobile terminal measures the chip power of the navigation channel contained in the base station transmission signal when the WCDMA mobile terminal reaches sensitivity in the conducted test. The main function of +1dB in the formula is to prevent the power of the base station from rapidly dropping to the vicinity of sensitivity, which causes the error rate correction capability of the mobile terminal to exceed the limit, and the terminal enters the decoding unstable state to cause the test error.
Sp 7: the BER of the WCDMA mobile terminal is measured, and should be very close to 0.1%.
Sp 8: if the BER is not out of the standard, a predetermined value such as 0.5dB base station simulator transmission power is reduced, if out of the standard, the predetermined value such as 0.5dB base station power is increased, and the test is carried out again. Recording the transmitting power of the base station simulator at the moment, namely the sensitivity of the position。
The code error rate of the WCDMA mobile terminal is not over standard when the code error rate is less than or equal to 0.1 percent, and the code error rate of the WCDMA mobile terminal is over standard when the code error rate is more than 0.1 percent
Sp 9: the test system controls the darkroom transceiver antenna to rotate to the vertical position and repeats step 4-8.
Sp 10: the test system controls the turret Theta and Phi axes to move to the second predetermined position and repeats Sp 3-9.
Sp 11: after testing all angles of Theta and Phi axes of the rotary table is finished, carrying out weighted statistics on the sensitivity of all positions according to a formulaThereby obtaining the final TIS.
Wherein, Theta axis (theta axis) every 300Phi axis (Phi axis) every 300The test was performed once. The TIS calculation formula is as follows:
wherein，The angle of the Theta and Phi axes above; EIS is sensitivityCompensating the power value of the angle darkroom receiving antenna gain, wherein the unit is Watt (Watt); n and M are the number of test points of Theta and Phi axes respectively, standard Theta is 12 points, Phi is 12 pointsThe sensitivity of the darkroom receiving antenna rotation horizontal and vertical position test is respectively. Wherein Theta only needs to test half of the data due to the symmetry. The total test points were therefore 6 x 12 x 2=144 points.
The second embodiment of the present invention omits the initial test conducted sensitivity andbut the measurement time at the first point will be a little longer. However, it is only 1/144 that is the total number of tests, so the overall test time is still much saved. The method for rapidly positioning the Sensitivity (Sensitivity) at any position under radiation by using the CPICH RSCP value corresponding to the Sensitivity (Sensitivity) at any point of the WCDMA terminal radiation mode can improve the Sensitivity (Sensitivity) search time of each angle in the TIS test, thereby improving the overall measurement speed of the TIS.
In summary, according to the TIS test method of the WCDMA mobile terminal provided by the present invention, since the CPICH RSCP value corresponding to the Sensitivity (Sensitivity) of the WCDMA terminal is used to quickly locate the Sensitivity (Sensitivity) of any position under radiation, the Sensitivity (Sensitivity) search time of each angle in the WCDMA TIS test can be increased, thereby increasing the overall measurement speed of the WCDMA TIS.
And the method for rapidly positioning the Sensitivity (Sensitivity) at any position under radiation by using CPICH RSCP values corresponding to the Sensitivity (Sensitivity) at any point of the radiation mode of the WCDMA terminal can improve the Sensitivity (Sensitivity) search time of each angle in the TIS test, thereby improving the test efficiency of the TIS of the WCDMA mobile terminal.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims (10)

1. A TIS test method of WCDMA mobile terminal is characterized by comprising the following steps:
firstly, the WCDMA mobile terminal and the base station emulator are directly connected by using a radio frequency cable for conducting a conduction test, the WCDMA mobile terminal measures CPICH RSCP value of the chip power of the navigation channel contained in the base station sending signal when the WCDMA mobile terminal reaches the error rate standard under the conduction test, and the chip power of the navigation channel contained in the base station sending signal measured by the WCDMA mobile terminal under the conduction test is set as (ii) a The method further comprises the steps of:
step 1: starting up a WCDMA mobile terminal, placing the WCDMA mobile terminal at a rotary table fixing position of an OTA test system, and connecting the WCDMA mobile terminal to a base station simulator;
step 2: the OTA test system controls the Theta axis and Phi axis of the rotary table to be transmitted to a first preset position;
step 3: the OTA test system controls the darkroom receiving and transmitting antenna to rotate to the horizontal position;
step 4: OTA test system controls base station emulator to initial power(ii) a Each time the mobile phone is changed to a new position, the base station simulator always starts from the highest transmitting power and gradually reduces the power until the error rate exceeds the standard;
step 5: measuring the error rate of the WCDMA mobile terminal; and testing the output power of the base station simulator at the moment to be set as the initial powerIn the meantime, the WCDMA mobile terminal measures CPICH RSCP the chip power value of the navigation channel contained in the base station transmission signal, and sets it as；
Step 6: when the error rate of the WCDMA mobile terminal does not exceed the standard, the OTA test system controls the base station simulator to reduce the transmission power as follows: =-（-) + 1; wherein,indicating the power that the base station simulator should set next, defined as the expected sensitivity;
initial power for base station simulator test;indicating that the emulator output power at the base station is set to the initial powerWhen the mobile terminal of WCDMA measures the chip power of the navigation channel contained in the signal sent by base station;the method comprises the steps that in a conduction test, when a WCDMA mobile terminal reaches sensitivity, the WCDMA mobile terminal measures the chip power of a navigation channel contained in a base station sending signal; the +1dB in the formula is used for preventing the power of the base station from rapidly dropping to the vicinity of the sensitivity, so that the error rate correction capability of the mobile terminal exceeds the limit, and the terminal enters a decoding unstable state to cause a test error;
step 7: measuring the error rate of the WCDMA mobile terminal at the moment;
step 8: when the error rate of the WCDMA mobile terminal is judged not to exceed the standard, reducing a preset value for the transmitting power of the base station simulator, and when the error rate of the WCDMA mobile terminal exceeds the standard, increasing the preset value for the transmitting power of the base station simulator and retesting; recording the transmitting power of the base station simulator at the moment, namely the sensitivity of the position；
Step 9: the OTA test system controls the darkroom transmitting and receiving antenna to rotate to the vertical position, and Step4-8 is repeated;
step 10: the test system controls the transmission of the turntable Theta and Phi shafts to a second preset position, and Step3-9 is repeated;
step 11: test system control turntable Theta axis every 300Phi axis every 300And (3) testing once, and after testing of all angles of the Theta and Phi axes of the rotary table is finished, according to a formula:
weighted statistics of sensitivity at all locationsThereby obtaining a final TIS;
wherein，The angles of the Theta and Phi axes, respectively, EIS is the sensitivityCompensating the power value of the angle darkroom receiving antenna after gain, wherein the unit is tile; n and M are the number of test points on the Theta and Phi axes respectively,the sensitivity of the rotation horizontal and vertical position test of the darkroom receiving antenna is respectively;
each one of which isAt most, only for obtaining timeThree replicates of step5 were required: once at initial power, at expected sensitivityIs tested once atThe vicinity search is performed once, and thus each can be shortenedThereby reducing the total testing time of the TIS.
2. The TIS test method of WCDMA mobile terminal as claimed in claim 1, wherein the error rate of WCDMA mobile terminal is not over standard when less than 0.1%.
3. The TIS test method of a WCDMA mobile terminal as claimed in claim 1, wherein the predetermined value in Step8 is 0.5 dB.
4. The TIS test method of WCDMA mobile terminal as claimed in claim 1, wherein the Theta axis of the first and second predetermined positions is spaced 30 degrees apart0Phi axes spaced 30 apart0。
5. The TIS test method of WCDMA mobile terminal as claimed in claim 1, wherein the number of test points of Theta and Phi axes is set to 12.
6. A TIS test method of WCDMA mobile terminal is characterized by comprising the following steps:
sp 1: starting up a WCDMA mobile terminal, placing the WCDMA mobile terminal at a rotary table fixing position of an OTA test system, and connecting the WCDMA mobile terminal to a base station simulator;
sp 2: the OTA test system controls the Theta axis and Phi axis of the rotary table to be transmitted to a first preset position;
sp 3: the OTA test system controls the darkroom receiving and transmitting antenna to rotate to the horizontal position;
sp 4: OTA test system controls base station emulator to initial power；
Sp 5: measuring the error rate of the WCDMA mobile terminal;
sp 5-1: when the error rate of the WCDMA mobile terminal does not exceed the standard, the OTA test system controls the base station simulator to reduce a preset value transmitting power;
sp 5-2: measuring the error rate of the WCDMA mobile terminal at the moment;
sp 5-3: when the BER of the WCDMA mobile terminal does not exceed the standard, Sp5-2 and Sp5-3 are repeated until the BER exceeds the standard; and recording the transmitting power of the base station simulator just exceeding the standard, namely the sensitivity of the position(ii) a And obtains the chip power CPICH RSCP of the navigation channel contained in the signal transmitted by the base station measured by the WCDMA mobile terminal at this time as；
Sp 5-4: the OTA test system controls the darkroom receiving and sending antenna to rotate to the vertical position, and the sensitivity of the mobile terminal at the moment is measured and obtained(ii) a And testing and obtaining the output power of the base station simulator at the moment and setting the output power as the initial powerAt that time, the WCDMA mobile terminal measures the chip power of the navigation channel contained in the base station transmission signal as；
Sp 5-5: when the sensitivity of the WCDMA mobile terminal does not exceed the standard, the OTA test system controls the base station emulator to reduce the transmission power and sets the transmission power as follows:
=-（-) + 1; wherein,indicating the power that the base station simulator should set next, defined as the expected sensitivity;initial power for base station simulator test;indicating that the emulator output power at the base station is set to the initial powerWhen the mobile terminal of WCDMA measures the chip power of the navigation channel contained in the signal sent by base station;the method comprises the steps that in a conduction test, when a WCDMA mobile terminal reaches sensitivity, the WCDMA mobile terminal measures the chip power of a navigation channel contained in a base station sending signal; the +1dB in the formula is used for preventing the power of the base station from rapidly dropping to the vicinity of the sensitivity, so that the error rate correction performance of the mobile terminal is causedWhen the force exceeds the limit, the terminal enters a decoding unstable state to cause a test error;
sp 5-6: measuring the error rate of the mobile terminal;
sp 5-7: when the error rate does not exceed the standard, reducing the power of a preset value base station, if the error rate exceeds the standard, increasing the power of the preset value base station, and retesting; and recording the transmitting power of the base station simulator just exceeding the standard, namely the sensitivity of the position；
Sp5-8: the OTA test system controls the darkroom receiving and transmitting antenna to rotate to the horizontal position;
sp 5-9: OTA test system controls base station emulator to initial power(ii) a Each time the mobile phone is changed to a new position, the base station simulator always starts from the highest transmitting power and gradually reduces the power until the error rate exceeds the standard;
sp 5-10: measuring the error rate of the WCDMA mobile terminal; and testing the output power of the base station simulator at the moment to be set as the initial powerAt that time, the WCDMA mobile terminal measures the chip power of the navigation channel contained in the base station transmission signal as；
Sp 6: when the error rate of WCDMA mobile terminal is not over standard, OTA test system controls base station emulator to reduce transmission power to =-（-）+1；
Wherein,indicating the power that the base station simulator should set next, defined as the expected sensitivity;initial power for base station simulator test;indicating that the emulator output power at the base station is set to the initial powerWhen the mobile terminal of WCDMA measures the chip power of the navigation channel contained in the signal sent by base station;the method comprises the steps that in a conduction test, when a WCDMA mobile terminal reaches sensitivity, the WCDMA mobile terminal measures the chip power of a navigation channel contained in a base station sending signal; the +1dB in the formula is used for preventing the power of the base station from rapidly dropping to the vicinity of the sensitivity, so that the error rate correction capability of the mobile terminal exceeds the limit, and the terminal enters a decoding unstable state to cause a test error;
sp 7: measuring the error rate of the WCDMA mobile terminal;
sp 8: when the error rate of the WCDMA mobile terminal is judged not to exceed the standard, reducing a preset value for the transmitting power of the base station simulator, and when the error rate of the WCDMA mobile terminal exceeds the standard, increasing the preset value for the transmitting power of the base station simulator and retesting; base station simulator for recording the timeThe transmitted power, i.e. the sensitivity of the position；
Sp 9: the OTA test system controls the darkroom transmitting and receiving antenna to rotate to a vertical position, and Sp4-8 is repeated;
sp 10: the test system controls the transmission of the turntable Theta and Phi shafts to a second preset position and repeats Sp 3-9;
sp 11: test system control turntable Theta axis every 300Phi axis every 300And (3) testing once, and after testing of all angles of the Theta and Phi axes of the rotary table is finished, according to a formula:
weighted statistics of sensitivity at all locationsThereby obtaining a final TIS;
wherein，The angles of the Theta and Phi axes, respectively, EIS is the sensitivityCompensating the power value of the angle darkroom receiving antenna after gain, wherein the unit is tile; n and M are the number of test points on the Theta and Phi axes respectively,the sensitivity of the rotation horizontal and vertical position test of the darkroom receiving antenna is respectively;
sensitivity of a conduction mode WCDMA mobile terminal and the WCDMA mobile terminal achieves in a conduction testActual received power of WCDMA mobile terminal by sensitivityIn the case that the test is not convenient,
omission of initial test transduction sensitivity andthe Sensitivity (Sensitivity) search time of each angle in the TIS test can be improved by using the method of quickly positioning the Sensitivity (Sensitivity) of any position under radiation by using CPICH RSCP values corresponding to the Sensitivity (Sensitivity) at any point of the WCDMA terminal radiation mode, so that the overall measurement speed of the TIS is improved.
7. The TIS test method of WCDMA mobile terminal as claimed in claim 6, wherein the error rate of WCDMA mobile terminal is not over standard when less than 0.1%, and the error rate of WCDMA mobile terminal is over standard when more than or equal to 0.1%.
8. The TIS test method of WCDMA mobile terminal as claimed in claim 6, wherein the predetermined value in step Sp8 is 0.5 dB.
9. The TIS testing method of claim 6, wherein the Theta axis of the first predetermined location and the second predetermined location is spaced 30 degrees apart0Phi axes spaced 30 apart0。
10. The TIS test method of WCDMA mobile terminal as claimed in claim 6, wherein the number of test points of Theta and Phi axes is set to 12.
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