CN1427603A - Method of fast measuring error frame rate - Google Patents
Method of fast measuring error frame rate Download PDFInfo
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- CN1427603A CN1427603A CN 01144908 CN01144908A CN1427603A CN 1427603 A CN1427603 A CN 1427603A CN 01144908 CN01144908 CN 01144908 CN 01144908 A CN01144908 A CN 01144908A CN 1427603 A CN1427603 A CN 1427603A
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- error rate
- frame error
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- fer
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 22
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
A method for fast measuring the frame error rate (FER) includes such steps as decreasing the power of forward channel for lowering the standard of FER, not measuring stenard FER if the measurement passes, and measuring standard FER if the measurement does not pass. It is suitable for the sensitivity test of CDMA mobile telephone.
Description
Technical field
The present invention relates to code division multiple access (CDMA) handset testing method, the method for testing of particularly relevant sensitivity frame error rate (FER) with the receiver performance.
Background technology
In code division multiple access (CDMA) mobile phone test, the performance of CDMA receiver is to weigh the important technology index of a mobile phone radio frequency performance, and it is explained by measuring frame error rate (FER).The measurement of receiver sensitivity is wherein one of most important test.
Standard about the receiver sensitivity of measuring the CDMA mobile phone: the standard of global general-use is TIA/EIA IS-98C now, then is YD/T 1050 by Ministry of Information Industry's promulgation in China.In these two standards, the description that the receiver sensitivity of CDMA mobile phone is tested all is the same.That is: use the data rate of 9600bit/s to set up calling with the rate set 1 Loopback Mode, the power that the CDMA forward channel is set is-104dBm/1.23MHz, the power of pilot channel is-7.0dB, the power of Traffic Channel is-condition of 15.6dB under, the frame error rate of each test (FER) should be no more than 0.5% under 95% confidence level.
So, even an error frame does not all measure, in order to satisfy under 95% confidence level, frame error rate should be no more than 0.5% condition, tester's will have to mobile phone to be measured is carried out test of at least 600 frames.This means that the tester will pay 14 seconds time nearly for the test of this 600 multiframe.
Summary of the invention
The purpose of this invention is to provide a kind of method of testing, this method reduces the standard of frame error rate (FER) when measuring the receiving sensitivity of CDMA mobile phone, and under the same prerequisite that keeps 95% confidence level, the tester can carry out the test of many frames less so.
For achieving the above object, the method for measuring frame error rate fast comprises step:
(a) power of reduction forward channel relaxes the standard of frame error rate (FER) other standard
Remain unchanged;
(b) if measurement is passed through, then no longer carry out the frame error rate of standard and measure, do not have if measure
Have by, then need carry out the frame error rate of standard and measure.
The inventive method can significantly reduce the testing time in the receiver sensitivity test of code division multiple access (CDMA) mobile phone, and for production line, the minimizing of single machine test time just meaned in the unit interval can test more mobile phone, increases productivity.
Description of drawings
Fig. 1 is a schematic diagram of measuring the method for frame error rate fast.
Fig. 2 is a flow chart of measuring the method for frame error rate fast.
The embodiment of invention
Below in conjunction with accompanying drawing the present invention is described.
Accompanying drawing 1 is the tendency chart that the frame error rate (FER) of the receiver that goes out of CDMA mobile phone actual measurement changes with forward channel power.As can be seen from the figure, this variation tendency roughly can be gone match with a natural exponential curve:
y＝f(x)
f(x)＝a×e
(x-b)×c
a＝1.55×10
-43
B=-70 wherein
c＝-2.55
As can be seen from the figure, design on the reasonable mobile phone, the power of forward channel reduces to-during the 108.35dBm left and right sides, frame error rate (FER) just can be badly to 0.5%.And survey according to the standard of test specification, in forward channel be-during 104dBm, seldom can see the appearance of mistake frame.So the power that reduces forward channel reduces requirement to frame error rate (FER) simultaneously, and to reach same test be possible.
Accompanying drawing 2 is flow charts of test, as shown in Figure 2, in when beginning test measurement parameter is set, and as the power of forward channel is-106dBm, and the standard of frame error rate is 1.0% or the like.
Here, the tester can be according to the power of the test experience of this mobile phone being decided in its sole discretion forward channel.In general, can be arranged on-104dBm is between-the 107dBm.And the standard of frame error rate can be decided to be 0.5% to 1.5%.
Then,,, then no longer carry out the frame error rate test of standard if by test by instrument test frame error rate (FER), otherwise, should carry out the frame error rate test of a standard.
Claims (3)
1. method of measuring fast frame error rate comprises step:
(a) power of reduction forward channel relaxes the standard of frame error rate (FER), and other standard remains unchanged;
(b) if measurement is passed through, then no longer carry out the frame error rate of standard and measure, do not pass through, then need carry out the frame error rate of standard and measure if measure.
2. by the described method of claim 1, it is characterized in that described reduction forward channel power for-104dBm to-107dBm.
3. by the described method of claim 1, it is characterized in that described standard frame error rate is loosened to 0.5% to 1.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144908 CN1427603A (en) | 2001-12-21 | 2001-12-21 | Method of fast measuring error frame rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144908 CN1427603A (en) | 2001-12-21 | 2001-12-21 | Method of fast measuring error frame rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1427603A true CN1427603A (en) | 2003-07-02 |
Family
ID=4677875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01144908 Pending CN1427603A (en) | 2001-12-21 | 2001-12-21 | Method of fast measuring error frame rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1427603A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352191C (en) * | 2005-12-20 | 2007-11-28 | 西安交通大学 | Method for simulating error frame ratio of air interface tech. testing platform |
| CN101018094B (en) * | 2006-03-01 | 2012-04-11 | 捷讯研究有限公司 | System and method for determining receiver sensitivity |
| WO2024108404A1 (en) * | 2022-11-22 | 2024-05-30 | 华为技术有限公司 | Frame error rate measurement method and apparatus |
-
2001
- 2001-12-21 CN CN 01144908 patent/CN1427603A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352191C (en) * | 2005-12-20 | 2007-11-28 | 西安交通大学 | Method for simulating error frame ratio of air interface tech. testing platform |
| CN101018094B (en) * | 2006-03-01 | 2012-04-11 | 捷讯研究有限公司 | System and method for determining receiver sensitivity |
| WO2024108404A1 (en) * | 2022-11-22 | 2024-05-30 | 华为技术有限公司 | Frame error rate measurement method and apparatus |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |