CN101741479B - Joint test method for maximum power regression and adjacent channel leakage ratio - Google Patents
Joint test method for maximum power regression and adjacent channel leakage ratio Download PDFInfo
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- CN101741479B CN101741479B CN200810217264.7A CN200810217264A CN101741479B CN 101741479 B CN101741479 B CN 101741479B CN 200810217264 A CN200810217264 A CN 200810217264A CN 101741479 B CN101741479 B CN 101741479B
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a test method for MPR (maximum power regression), which adds a test for the MPR (maximum power regression) into the test for an ACLR (adjacent channel leakage ratio), and judges whether the maximum power regression meets the requirement by testing the adjacent channel leakage ratio. The method comprises the following steps: establishing a test loop, and ensuring that UE is operated in a loopback mode; setting relative parameters of the MPR; setting a testing environment according to the test requirements of the MPR and the ACLR; transmitting continuous uplink power control commands to the UE to enable a system to enter a normal working state; testing an ACLR value; resetting the relative parameters of the MPR; repeating the steps above; testing a new ACLR; and judging whether the new ACLR value meets the requirement under new conditions.
Description
Technical field
The present invention relates to the method for testing of a kind of MPR (maximum transmission power rollback), especially relate to the test of MPR (maximum transmission power rollback) is joined in the test of ACLR (Adjacent Channel Leakage Ratio rate), by test ACLR rate, judge whether the rollback of maximum transmission power meets the requirements.
Background technology
The nonlinear distortion of radio-frequency power amplifier can make it produce new frequency component, as produced second harmonic for second-order distortion, for third order distortion, can produce triple-frequency harmonics.These new frequency components will cause direct interference to the signal of transmitting as dropped in passband, if drop on the outer signal that will disturb other channel of passband.Amplifier has a linear dynamic range, and within the scope of this, the power output of amplifier is linear to be increased.Along with the continuation increase of input power, amplifier progresses into saturation region, and power gain starts to decline.Output power value while conventionally gain being dropped to than the low 1dB of linear gain is defined as the 1dB compression point of power output.
Maximum transmission power rollback is exactly the maximal input of the power amplifier several decibel of rollback backward, be operated on the level of 1dB compression point, make power amplifier away from saturation region, enter linear work district, thereby improve the third order intermodulation coefficient of power amplifier.
Maximum transmission power rollback is also applied in the up-to-date communication systems such as existing LTE and LTE+.The OFDM using in LTE (OFDM), owing to effectively anti-ISI being specially adapted to the high-speed transfer under wireless environment, is generally considered the requisite technology of next generation communication system.But a major defect of OFDM is that peak-to-average power ratio is high especially, and high peak-to-average force ratio can cause the nonlinear distortion of radio-frequency power amplifier just, thereby the design of system is brought to a lot of problems.
For radio-frequency devices, can estimate by the measurement of 1dB compression point the rational maximum transmission power rollback value of device.But, after maximum transmission power rollback, to other parameter of whole system, likely can exert an influence.For each system, all can define by the way of test or emulation maximum transmission power rollback value, but in prior art, but there is no whether reasonably method of testing of maximum transmission power rollback value.
The present invention proposes the test that Adjacent Channel Leakage Ratio rate (ACLR) put in a kind of test by maximum transmission power rollback, in test ACLR, MPR relevant parameters is set, and whether test MPR meets the requirements.Can adjust test parameter according to actual conditions like this, when surveying ACLR, test according to actual needs MPR, save the testing time, reduce testing procedure, thereby simplify test process.
Summary of the invention
Technical problem to be solved by this invention is the method for testing that proposes a kind of MPR (maximum transmission power rollback).
In order to solve the problems of the technologies described above, the invention provides the joint test method of a kind of maximum transmission power rollback and Adjacent Channel Leakage Ratio rate, it is characterized in that:
Set up test loop, and guarantee that UE is operated under loopback mode;
MPR relevant parameters is arranged;
Test request according to MPR and ACLR arranges test environment;
To UE, send continuous uplink power control order, make system enter normal operating conditions;
Survey ACLR value;
Reset MPR relevant parameters, repeat above-mentioned steps, measure new ACLR, whether the ACLR value of judgement under new condition meets the requirements.As ACLR value meets the requirements, the test of MPR is passed through, and meets the requirements.
Described MPR relevant parameters comprises the modulation system of UE, RB and reference channel etc.
Described modulation system comprises QPSK and 16QAM.
Described test environment comprises the temperature to test, voltage, the isoparametric setting of frequency and bandwidth.
Requirement is set must tests the situation under all bandwidth conditions of described bandwidth.
The test pack of described ACLR value contains following steps:
The average power P of examining system main channel;
Survey the average power P1 of main channel the first side channel;
Survey RRC average power P1 ' and the P2 ' of the first neighboring trace and the second neighboring trace;
Calculate ACLR=P/P1;
Calculate ACLR1=P1 '/P and ACLR2=P2 '/P.
Adopt said method of the present invention, can in test ACLR, MPR relevant parameters be set, whether test MPR meets the requirements.Can adjust test parameter according to actual conditions like this, when surveying ACLR, test according to actual needs MPR, save the testing time, reduce testing procedure, thereby simplify test process.
Accompanying drawing explanation
Fig. 1 is test loop schematic diagram;
Fig. 2 is the schematic diagram of ACLR.
Embodiment
Take LTE system as example, the test of MPR and modulation system, system bandwidth is with whether complete Resource Block is relevant.So these parameters must be additionally set in test, carry out under correct condition to guarantee to test.
If test is under QPSK modulation system, system bandwidth is 5MHz, and RB (Resource Block, radio resource units in LTE) is greater than at 8 o'clock, and MPR must not be greater than 1 situation:
The environment of test comprises probe temperature and test voltage etc.Probe temperature divides thermal extremes and low temperature (being generally between-10 to+55 degrees Celsius), also has general temperature conditions.Test voltage is also divided high pressure and low pressure and general voltage condition, and in test, arranging generally of temperature and voltage combined by above-mentioned several extreme cases, surveys in addition the situation of general temperature and general voltage again.
Test frequency has been chosen several representational frequencies in general ACLR test, is respectively low frequency range, three kinds of intermediate frequency zone and high frequency regions.As to the band1 of LTE (1920-1980MHz), low frequency range can selected value be 1922.5,1925,1927.5,1930MHz, intermediate frequency zone is 1950MHz, the optional value of high frequency region is 1977.5,1975,1972.5,1970MHz.
In LTE system, bandwidth is 1.5MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz.In general ACLR test, choose representational minimum bandwidth, maximum bandwidth and 5MHz test, but add after MPR test, must all relevant bandwidth of test, because MPR relevant parameters is as different in the value under different bandwidth such as RB.
But, after adding the test of MPR, because MPR value is in different modulation systems, under bandwidth and RB condition, be different, so the parameter setting of test environment needs change.
Probe temperature, the setting of test voltage and test frequency does not change as mentioned above.But must add the setting of modulation system, be QPSK and 16QAM etc.
In addition,, due to corresponding different Resource Block requirement under different bandwidth, therefore, the situation under must test all bandwidth conditions, rather than the survey ACLR picture, just test the value under typical several bandwidth conditions.In addition, also need, according to different bandwidth conditions, different maximum RB values is set.
Configure after test environment, build test link, as shown in Figure 1, make system energy normal talking, set the parameters of system simulator and UE.Guarantee that UE is operated under loopback mode.
Complete testing procedure is as described below:
MPR relevant parameters is set, as modulation system and RB etc.;
According to the test request of MPR and ACLR, new test environment is set;
To UE, send continuous uplink power control order, set up test loop;
Survey ACLR;
Reset MPR relevant parameters, repeat above-mentioned steps, measure new ACLR, see and whether meet the requirements; As ACLR value meets the requirements, the test of MPR is passed through, and meets the requirements.
MPR pertinent regulations are followed in the setting of modulation system and RB.As when modulation system is 16QAM, when bandwidth is 1.4MHz, MPR is 2.
The detailed step of test ACLR (Fig. 2) is as follows:
The average power P of examining system main channel;
Survey the average power P1 of main channel the first side channel;
Survey RRC average power P1 ' and the P2 ' of the first neighboring trace and the second neighboring trace;
Calculate ACLR=P/P1;
Calculate ACLR1=P1 '/P and ACLR2=P2 '/P.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a joint test method of maximum transmission power rollback MPR and Adjacent Channel Leakage Ratio rate ACLR, is characterized in that:
Set up test loop, and guarantee that UE is operated under loopback mode;
MPR relevant parameters is arranged;
Test request according to MPR and ACLR arranges test environment;
To UE, send continuous uplink power control order, make system enter normal operating conditions;
Survey ACLR value;
Reset MPR relevant parameters, repeat above-mentioned steps, measure new ACLR, whether the ACLR value of judgement under new condition meets the requirements, thereby judges whether MPR value meets the requirements, and as ACLR value meets the requirements, the test of MPR is passed through, and meets the requirements; Wherein, described test environment comprises the temperature to test, voltage, the setting of frequency and bandwidth; Requirement is set must tests the situation under all bandwidth for the treatment of examining system of described bandwidth.
2. the method for claim 1, is characterized in that: described MPR relevant parameters comprises the modulation system of UE RB and reference channel.
3. method as claimed in claim 2, is characterized in that: described modulation system comprises QPSK and 16QAM.
4. the method for claim 1, is characterized in that: described in treat that examining system is LTE system.
5. the method for claim 1, is characterized in that: the test pack of described ACLR value is containing following steps:
The average power P of examining system main channel;
Survey the average power P1 of main channel the first side channel;
Survey RRC average power P1 ' and the P2 ' of described the first side channel and the second neighboring trace;
Calculate ACLR=P/P1;
Calculate ACLR1=P1 '/P and ACLR2=P2 '/P.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810217264.7A CN101741479B (en) | 2008-11-04 | 2008-11-04 | Joint test method for maximum power regression and adjacent channel leakage ratio |
| PCT/CN2008/002152 WO2010051660A1 (en) | 2008-11-04 | 2008-12-31 | Method for testing maximum power reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810217264.7A CN101741479B (en) | 2008-11-04 | 2008-11-04 | Joint test method for maximum power regression and adjacent channel leakage ratio |
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| Publication Number | Publication Date |
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| CN101741479A CN101741479A (en) | 2010-06-16 |
| CN101741479B true CN101741479B (en) | 2014-03-12 |
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| WO (1) | WO2010051660A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299751A (en) * | 2010-06-28 | 2011-12-28 | 中兴通讯股份有限公司 | ACLR (adjacent channel leakage ratio) performance evaluation method and device of CPE (customer premises equipment) |
| US8744513B2 (en) * | 2010-06-29 | 2014-06-03 | Qualcomm Incorporated | Interaction between maximum power reduction and power scaling in wireless networks |
| DK2659720T3 (en) * | 2010-12-30 | 2015-03-30 | Ericsson Telefon Ab L M | METHODS AND DEVICES TO ENABLE PHR BACKOFF INDICATION IN PHR IN A TELECOMMUNICATION SYSTEM |
| WO2013078616A1 (en) * | 2011-11-29 | 2013-06-06 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for monitoring performance, and remote radio unit |
| GB2506445B (en) * | 2012-10-01 | 2015-06-10 | Broadcom Corp | Apparatus, methods and computer programs for signalling transmitted output power |
| WO2017041272A1 (en) * | 2015-09-10 | 2017-03-16 | 华为技术有限公司 | Low power adjustment method and apparatus |
| CN105791601B (en) * | 2016-02-25 | 2019-03-08 | Oppo广东移动通信有限公司 | Power consumption method of adjustment and device |
| CN106788273B (en) * | 2016-12-29 | 2020-08-14 | 宇龙计算机通信科技(深圳)有限公司 | Method and system for adjusting VBAT value of mobile phone power amplifier |
| WO2018232579A1 (en) | 2017-06-20 | 2018-12-27 | 深圳市大疆创新科技有限公司 | Method and device for setting transmission power of communication system |
| WO2019041308A1 (en) * | 2017-09-01 | 2019-03-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Power back-off controlling method, apparatus and equipment |
| CN114430568A (en) * | 2020-10-29 | 2022-05-03 | 中国移动通信有限公司研究院 | Method and device for testing terminal power backoff |
| CN115968019B (en) * | 2023-03-16 | 2023-08-01 | 荣耀终端有限公司 | Communication parameter processing method, device and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068122A (en) * | 2007-05-25 | 2007-11-07 | 中兴通讯股份有限公司 | Multi-switch-in terminal maximum transmission power obtaining method |
| CN101068434A (en) * | 2006-11-23 | 2007-11-07 | 中兴通讯股份有限公司 | Measuring device and method for adjacent channel leakage ratio |
| CN101068120A (en) * | 2006-11-23 | 2007-11-07 | 中兴通讯股份有限公司 | Maximum transmission power testing device and method |
| CN101136675A (en) * | 2007-06-26 | 2008-03-05 | 中兴通讯股份有限公司 | Power backspacing based power calibrating method and apparatus |
-
2008
- 2008-11-04 CN CN200810217264.7A patent/CN101741479B/en not_active Expired - Fee Related
- 2008-12-31 WO PCT/CN2008/002152 patent/WO2010051660A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068434A (en) * | 2006-11-23 | 2007-11-07 | 中兴通讯股份有限公司 | Measuring device and method for adjacent channel leakage ratio |
| CN101068120A (en) * | 2006-11-23 | 2007-11-07 | 中兴通讯股份有限公司 | Maximum transmission power testing device and method |
| CN101068122A (en) * | 2007-05-25 | 2007-11-07 | 中兴通讯股份有限公司 | Multi-switch-in terminal maximum transmission power obtaining method |
| CN101136675A (en) * | 2007-06-26 | 2008-03-05 | 中兴通讯股份有限公司 | Power backspacing based power calibrating method and apparatus |
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| Publication number | Publication date |
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| WO2010051660A1 (en) | 2010-05-14 |
| CN101741479A (en) | 2010-06-16 |
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