深圳市安瑞泰仪器有限公司
2020/10/17 16:24:44LTE测试指导
本文档主要介绍根据3GPP 36.521,使用CMW500进行LTE测试的方法及测试步骤。
序号 | 3GPP TS 36.521 | 测试项目 | 测试条件 | |
1 | 6.2.2 | UE Maximum Output Power | 常温、高温、低温 | |
2 | 6.2.3 | Maximum Power Reduction (MPR) | 常温、高温、低温 | |
3 | 6.2.4 | Additional Maximum Power Reduction (A-MPR) | 常温、高温、低温 | |
4 | 6.2.5 | Configured UE transmitted Output Power | 中间信道 | |
5 | 6.3.2 | Minimum Output Power | 常温、高温、低温 | |
6 | 6.3.4.1 | General ON/OFF time mask | 常温、高温、低温 | |
7 | 6.3.4.2.1 | PRACH time mask | 中间信道 | |
8 | 6.3.4.2.2 | SRS time mask | 中间信道 | |
9 | 6.3.5.1 | Power Control Absolute power tolerance | 中间信道 | |
10 | 6.3.5.2 | Power Control Relative power tolerance | 低信道 | |
11 | 6.3.5.3 | Aggregate power control tolerance | 常温(中间信道) | |
12 | 6.5.1 | Frequency Error | 常温、高温、低温 | |
13 | 6.5.2.1 | Error Vector Magnitude (EVM) | 常温、高温、低温 | |
14 | 6.5.2.1A | PUSCH-EVM with exclusion period | 常温(低信道) | |
15 | 6.5.2.2 | Carrier leakage | 常温、高温、低温 | |
16 | 6.5.2.3 | In-band emissions for non allocated RB | 常温、高温、低温 | |
17 | 6.5.2.4 | EVM equalizer spectrum flatness | 常温、高温、低温 | |
18 | 6.6.1 | Occupied bandwidth | 常温(中间信道) | |
19 | 6.6.2.1 | Spectrum Emission Mask | 常温、高温、低温 | |
20 | 6.6.2.2 | Additional Spectrum Emission Mask | 常温、高温、低温 | |
21 | 6.6.2.3 | Adjacent Channel Leakage power Ratio | 常温、高温、低温 | |
22 | 7.3 | Reference sensitivity level | 常温、高温、低温 | |
23 | 7.4 | Maximum input level | 中间信道 | |
2.1 初始化设置
10)点击Measure选择LTE Signaling模式
11)在Operating Band内选择频段,Downlink Channel选择信道,Cell Band选择带宽,点击面板上的ON按钮打开小区,开始注册。
12)小区显示Attached附着成功,点击Connect进行连接
注:对于FDD模式和TDD模式需要设置不同的测量子帧,该参数的默认值为0,对于FDD模式而言,默认设置即可。对于TDD模式测量子帧只能从以下4个值中选取{2,3,7,8}
三、发射机测试指标
3.1、大发射功率测试(6.2.2)
测试步骤:
1)点击Measure,选择LTE1 Multi Eval进入测试界面。
2)点击Multi Evaluation,点击Assign Views,选择EVM。
3) 按Signaling Parameter→Connection Setup,将上行RMC参数按照协议进行设置,并且设置Modulation为QPSK;按TPC…将Active TPC Setup设置为Max Power。
4)在EVM测量界面下读取终端发射功率。
测试标准: 23±2.7 dBm.
注:对于符合Figure 5.4.2-1, Table 5.4.4-1的发射机的频段,当RB范围在FUL_low —FUL_low + 4 MHz或者 FUL_high — 4 MHz and FUL_high大输出功率下限可以下降1.5dB
3.2、大功率衰减(MPR)(6.2.3)
测试步骤:
1)点击Measure,选择LTE1 Multi Eval进入测试界面。
2)点击Multi Evaluation,点击Assign Views,选择EVM。
3)按Signaling Parameter→Connection Setup,将上行RMC参数按照协议进行设置。设置Modulation为QPSK;按TPC…将Active TPC Setup设置为Max Power。
4)在EVM测量界面下读取终端发射功率。
5)修改Modulation为16QAM,在此调制方式下读取终端发射功率。
测试标准:
| QPSK +full RB | 16QAM+Partial RB | 16QAM+full RB |
回退 | 1dB | 1dB | 2dB |
3.3、额外大功率回退(A-MPR)(6.2.4)
测试步骤:
同大发射功率,根据6.2.4.3-1修改Additional Spectrum Emission值
测试标准:不同频段测试限值参照协议6.2.4.5
3.4、配置UE功率测试(6.2.5)
测试步骤:
1)进入LTE Signaling→Config→Uplink Power Control界面下选择Active TPC Setup设为Max Power,将Max.allowed power P-max参照协议设置为-10dBm。
2)打开小区,使得UE注册到网络,连接UE。
3)在EVM测量界面下读取终端发射功率。
4)修改Max.allowed power P-max,分别在10dBm/15dBm下重复步骤1)-3)进行测试。
测试标准:
Table 6.2.5.5-1: PCMAX configured UE output power
| Channel bandwidth / maximum output power | |||||
1.4 MHz | 3 MHz | 5 MHz | 10 MHz | 15 MHz | 20 MHz | |
Measured UE output power test point 1 | -10 dBm ± 7.7 | |||||
Measured UE output power test point 2 | 10 dBm ± 6.7 | |||||
Measured UE output power test point 3 | 15 dBm ± 5.7 |
3.5、小输出功率(6.3.2)
测试步骤:
1)点击Measure,选择LTE1 Multi Eval进入测试界面。
2)点击Multi Evaluation,点击Assign Views,选择EVM。
3)按Signaling Parameter→Connection Setup,将上行RMC参数按照协议进行设置,并且设置Modulation为QPSK;按TPC…将Active TPC Setup设置为Min Power。
4)在EVM测量界面下读取终端发射功率。
测试标准:
Table 6.3.2.5-1: Minimum output power
| Channel bandwidth / minimum output power / measurement bandwidth | |||||
1.4MHz | 3 MHz | 5MHz | 10MHz | 15MHz | 20MHz | |
Minimum output power | ≤ -39 dBm |
3.6、关断功率+ON/OFF 时间模板(6.3.4.1)
测试步骤:
时间模板测试上下行RB配置—FDD
时间模板测试上下行RB配置—TDD
Table 6.3.4.1.4.1-1: Test Configuration Table
Test Parameters for Channel Bandwidths | ||||
| Downlink Configuration | Uplink Configuration | ||
Ch BW | N/A for General On/Off Time Mask test case | Mod'n | RB allocation | |
|
| FDD | TDD | |
1.4MHz | QPSK | 6 | 6 | |
3MHz | QPSK | 15 | 15 | |
5MHz | QPSK | 25 | 25 | |
10MHz | QPSK | 50 | 50 | |
15MHz | QPSK | 75 | 75 | |
20MHz | QPSK | 100 | 100 |
(LTE Signaling→Config→Uplink Power Control→PUSCH Open Loop Nomianl)
Bandwidth | Open loop Nominal Power(dBm) |
1.4M | -15 |
3M | -11 |
5M | -9 |
10M | -6 |
15M | -4 |
20M | -3 |
支持Advance PRACH/OL Power Setting,使用默认值,设置PO Nominal PUSCH为-105dBm。
测试标准:
Table 6.3.4.1.5-1: General ON/OFF time mask
| Channel bandwidth / minimum output power / measurement bandwidth | |||||
1.4 MHz | 3.0 MHz | 5 MHz | 10 MHz | 15 MHz | 20 MHz | |
Transmit OFF power | ≤ -48.5 dBm | |||||
Expected Transmission ON Measured power | -14.8dBm | -10.8dBm | -8.6dBm | -5.6dBm | -3.9dBm | -2.6dBm |
ON power tolerance | ± 7.5dB | ± 7.5dB | ± 7.5dB | ± 7.5dB | ± 7.5dB | ± 7.5dB |
3.7、PRACH时间模板(6.3.4.2.1)
测试步骤:
(LTE Signaling→Config→Uplink Power Control→PUSCH Open Loop Nomian
Bandwidth | PUSCH Open Loop Nomian(dBm) (PRACH config index = 3) | PUSCH Open Loop Nomian(dBm) (PRACH config index = 51) |
1.4M | -2.8 | -10.8 |
3M | 1.2 | -6.8 |
5M | 3.4 | -4.6 |
10M | 6.4 | -1.6 |
15M | 8.1 | -0.9 |
20M | 9.4 | 1.4 |
对于Advanced OL Power设置,配置Preamble Initial Received Target Power达到如下表所示的PRACH目标功率
| FDD | TDD |
Preamble Initial Received Target Power | -104 | -112 |
PRACH Config Index | 3 | 51 |
测试标准:
Table 6.3.4.2.1.5-1: PRACH time mask
| Channel bandwidth / Output Power [dBm] / measurement bandwidth | |||||
1.4 MHz | 3 MHz | 5 MHz | 10 MHz | 15 MHz | 20 MHz | |
Transmit OFF power | £ -48.5 dBm | |||||
Expected PRACH Transmission ON Measured power | -1 dBm | -1 dBm | -1 dBm | -1 dBm | -1 dBm | -1 dBm |
ON power tolerance | ± 7.5dB | ± 7.5dB | ± 7.5dB | ± 7.5dB | ± 7.5dB | ± 7.5dB |
3.8、SRS时间模板(6.3.4.2.2)
测试步骤:
Bandwidth | Open loop Nominal Power(dBm) |
1.4M | 8.5 |
3M | 9 |
5M | 11 |
10M | 14 |
15M | 16 |
20M | 17 |
支持Advance PRACH/OL Power Setting,Open Loop Nominal为默认值。
测试标准:
Table 6.3.4.2.2.5-1: SRS time mask
| Channel bandwidth / Output Power [dBm] / measurement bandwidth | |||||
1.4 MHz | 3 MHz | 5 MHz | 10 MHz | 15 MHz | 20 MHz | |
Transmit OFF power | £ -48.5 dBm | |||||
Expected SRS Transmission ON Measured power | -2.6 dBm | -2.6dBm | -2.6 dBm | -2.6 dBm | -2.6 dBm | -2.6 dBm |
ON power tolerance | ± 7.5dB | ± 7.5dB | ± 7.5dB | ± 7.5dB | ± 7.5dB | ± 7.5dB |
3.9、功率控制容限(6.3.5.1)
测试步骤:
1) 设置功率控制模式,在LTE Signaling界面下点击Config按钮,在Uplink Power Control下选择TX Power Control(TPC),Active TPC Setup选择为Constant Power模式。将Open Loop Nominal Power设为Point1对应的功率值。
2)点击LTE Signaling,选择Config,进入Connection界面下激活Keep RRC Connection,使能RRC空闲模式。
3)注册连接,点击Measure,选择LTE1 Multi Eval进入测试界面。
4)点击Multi Evaluation,点击Assign Views,选择EVM。
5)读取Test Point1 对应的Tx Power
6)断开连接,将Open Loop Nominal Power设为Point2 对应的功率值。
7)重复步骤1)-5)读取Test Point 2 对应的Tx Power。
8)如果不支持Advance PRACH/OL Power Setting,Test Point值根据下表进行设置
Bandwidth | Open loop Nominal Power(dBm) (Test Point1) | Open loop Nominal Power(dBm) (Test Point2) |
1.4M | -15 | -3 |
3M | -11 | 1 |
5M | -9 | 3 |
10M | -6 | 6 |
15M | -4 | 8 |
20M | -3 | 9 |
支持Advance PRACH/OL Power Setting,PO Nominal PUSCH根据下表进行设置
Parameter | Test Point1 | Test Point2 |
PO Nominal PUSCH | -105dBm | -93dBm |
测试标准:
Table 6.3.5.1.5-1: Absolute power tolerance: test point 1
| Channel bandwidth / expected output power (dBm) | |||||
1.4 MHz | 3.0MHz | 5 MHz | 10 MHz | 15 MHz | 20 MHz | |
Expected Measured power Normal conditions | -14.8dBm | -10.8dBm | -8.6dBm | -5.6dBm | -3.9dBm | -2.6dBm |
Power tolerance | ±10.0dB | ±10.0dB | ±10.0dB | ±10.0dB | ±10.0dB | ±10.0dB |
Expected Measured power Extreme conditions | -14.8dBm | -10.8dBm | -8.6dBm | -5.6dBm | -3.9dBm | -2.6dBm |
Power tolerance | ±13.0dB | ±13.0dB | ±13.0dB | ±13.0dB | ±13.0dB | ±13.0dB |
Table 6.3.5.1.5-2: Absolute power tolerance: test point 2
| Channel bandwidth / expected output power (dBm) | |||||
1.4 MHz | 3.0 MHz | 5 MHz | 10 MHz | 15 MHz | 20 MHz | |
Expected Measured power Normal conditions | -2.8 dBm | 1.2dBm | 3.4dBm | 6.4dBm | 8.2dBm | 9.4dBm |
Power tolerance | ± 10.0dB | ±10.0dB | ±10.0dB | ±10.0dB | ±10.0dB | ±10.0dB |
Expected Measured power Extreme conditions | -2.8 dBm | 1.2dBm | 3.4dBm | 6.4dBm | 8.2dBm | 9.4dBm |
Power tolerance | ± 13.0dB | ±13.0dB | ± 13.0dB | ±13.0dB | ±13.0dB | ±13.0dB |
3.10、相对功率控制容限(6.3.5.2)
终端的功率变化可以由功率控制或者RB 变化引起,基于这个原因本测试设计了三种测试场景来验证LTE终端的相对功率变化情况:
功率上升测试(TS 36.521-1, 图6.3.5.2.4.2-1)
功率降低测试(TS 36.521-1, 图6.3.5.2.4.2-2)
功率交替变化测试(TS 36.521-1, 图6.3.5.2.4.2-5).
根据RB 变化的不同时间点,功率上升测试和功率下降测试又各自定义了三种模式,分别为模式A,模式B,模式C。
测试步骤:
Table 6.3.5.2-1
Bandwidth | 1.4M | 3M | 5M | 10M | 15M | 20M |
#RB | 6 | 4 | 20 | 25 | 50 | 75 |
注:对于TDD,重复步骤12 – 14 七次可以完成余下的测量。
模式B和模式C的测量方法相同,只是RB变化的时间不同,模式A 是在10 TTIs之后变化,模式B是在20 TTIs之后变化,模式C 是在30 TTIs 之后变化。
Table 6.3.5.2-2
Bandwidth | 1.4M | 3M | 5M | 10M | 15M | 20M |
#RB | 5 | 15 | 25 | 50 | 75 | 100 |
经过上述步骤,功率降低测试(模式A)就已经完成了。模式B和模式C的测量方法几乎一致,只是RB变化的位置不同,模式A 是在6个TTI之后,模式B是在16个TTI之后,模式C是在26个TTI 之后。
3、功率交替变化测试测试步骤:
测试标准:参照协议6.3.5.2.5
3.11、总计(集合)功率容限(6.3.5.3)
测试步骤:
PUCCH
FDD下行信道设置
TDD下行信道设置
Table 6.3.5.3.4.1-1: Test Configuration Table: PUCCH sub-test
Test Parameters for Channel Bandwidths | ||||
| Downlink Configuration | Uplink Configuration | ||
Ch BW | Mod'n | RB allocation | FDD: PUCCH format = Format 1a TDD: PUCCH format = Format 1a/1b | |
|
| FDD | TDD | |
1.4MHz | QPSK | 3 | 3 | |
3MHz | QPSK | 4 | 4 | |
5MHz | QPSK | 8 | 8 | |
10MHz | QPSK | 16 | 16 | |
15MHz | QPSK | 25 | 25 | |
20MHz | QPSK | 30 | 30 |
PUSCH
FDD模式上行信道设置
TDD模式上行信道设置
Table 6.3.5.3.4.1-2: Test Configuration Table: PUSCH sub-test
Test Parameters for Channel Bandwidths | ||||
| Downlink Configuration | Uplink Configuration | ||
Ch BW | N/A for PUSCH sub-test | Mod'n | RB allocation | |
|
| FDD | TDD | |
1.4MHz | QPSK | 1 | 1 | |
3MHz | QPSK | 4 | 4 | |
5MHz | QPSK | 8 | 8 | |
10MHz | QPSK | 12 | 12 | |
15MHz | QPSK | 16 | 16 | |
20MHz | QPSK | 18 | 18 |
测试标准:
Table 6.3.5.3.5-1: Power control tolerance
TPC command | UL channel | Test requirement measured power |
0 dB | PUCCH | Given 5 power measurements in the pattern, the 2nd, 3rd, 4th, and 5th measurements shall be within ± 3.2 dB of the 1st measurement. |
0 dB | PUSCH | Given 5 power measurements in the pattern, the 2nd, 3rd, 4th, and 5th measurements shall be within ± 4.2 dB of the 1st measurement. |
3.12、频率误差(6.5.1)
测试步骤:
3)调整RS EPRE,按照Table 7.3.5-1将Full Cell Power设为参考灵敏度
4)Signaling Parameter→TPC将Active TPC Setup设置为max Power。
5)读取不同配置下的Freq Error值。
测试标准:|Δf| ≤ (0.1 PPM + 15 Hz)
3.13、矢量幅度误差EVM(6.5.2.1)
测试步骤:
PUSCH EVM
1)点击Measure,选择LTE1 Multi Eval进入测试界面。
2)点击Multi Evaluation,点击Assign Views,选择EVM
3)点击Signaling Parameter→TPC,将Active TPC Setup设置为Max Power,在不同配置下读取EVM值。
4)将Active TPC Setup设置为Close Loop,close loop Target power 设置为-36.8,在不同配置下读取EVM。
PUCCH EVM
PRACH EVM
| RS EPRE Settings (FDD/TDD) | PRACH Configuration Index(FDD/TDD) | Preamble Initial Received Target Power | Expected PRACH Power |
Test Point1 | -71/-63 | 4/53 | -120 | -31dBm |
Test Point2 | -86/-78 | 4/53 | -90 | 14dBm |
注:PRACH是在没有注册的情况下设置参数进行测试,测试结束后会注册连接,测试Test Point1后要断开连接,在进行Test Point2 。
2)根据测量规范,需要两个preamble来完成这项测试。因此,No Response to Preambles 应该需要勾选上直到测试完成。
3)PRACH期望功率值和PUSCH
测试标准:
对于QPSK和BPSK两种调制方式,PUSCH的EVM和EVM DMRS不应超过17.5 %,对于16QAM调制方式,PUSCH的EVM不应超过12.5 %。
PUCCH信道的EVM不应超过17.5 %,PRACH信道的EVM不应超过17.5 %。
3.14、PUSCH 跳变周期EVM(6.5.2.1A)
测试步骤:
a. Subframe = 2, Leading = 25Hs, Lagging = 25Hs
b. Subframe = 3, Leading = 25Hs, Lagging = 5Hs
c. Subframe = 7, Leading = 25Hs, Lagging = 25Hs
d. Subframe = 8, Leading = 25Hs, Lagging = 5Hs
测试标准:
PUSCH EVM:QPSK、BPSK小于17.5%,16QAM小于12.5%
PUCCH、PRACH EVM:小于17.5%。
3.15、载波泄露(6.5.2.2)
测试步骤:
测试标准:
Table 6.5.2.2.5-1: Test requirements for Relative Carrier Leakage Power
LO Leakage | Parameters | Relative Limit (dBc) |
3.2 dBm ±3.2dB | -24.2 | |
-26.8 dBm ±3.2dB | -19.2 | |
-36.8dBm±3.2dB | -9.2 |
3.16、非分配RB的带内杂散(6.5.2.3)
测试步骤:
PUSCH
PUCCH
测试标准:
Table 6.5.2.3.5-1: Test requirements for in-band emissions
Parameter Description | Unit | Limit (Note 1) | Applicable Frequencies | |
General | dB | +0.8 | Any non-allocated | |
IQ Image | dB | -24.2 | Image frequencies | |
Carrier leakage | dBc | -24.2 | 3.2dBm ±3.2dB | LO frequency |
-19.2 | -26.8 dBm ±3.2dB | |||
-9.2 | -36.8 dBm ±3.2dB |
3.17、EVM均衡器频谱平坦度(6.5.2.4)
测试步骤:
测试标准:
Table 6.5.2.4.5-1: Test requirements for EVM equalizer spectrum flatness (normal conditions)
Frequency Range | Maximum Ripple [dB] |
FUL_Meas – FUL_Low ≥ 3 MHz and FUL_High – FUL_Meas ≥ 3MHz(Range 1) | 5.4 (p-p) |
FUL_Meas – FUL_Low < 3 MHz or FUL_High – FUL_Meas < 3 MHz(Range 2) | 9.4 (p-p) |
Table 6.5.2.4.5-2: Test requirements for spectrum flatness (extreme conditions)
Frequency Range | Maximum Ripple [dB] |
FUL_Meas – FUL_Low ≥ 5 MHz and FUL_High – FUL_Meas ≥ 5 MHz(Range 1) | 5.4 (p-p) |
FUL_Meas – FUL_Low < 5 MHz or FUL_High – FUL_Meas < 5 MHz(Range 2) | 13.4 (p-p) |
3.18、占用带宽(6.6.1)
测试步骤:
1)点击Measure,选择LTE1 Multi Eval进入测试界面。
2)点击Multi Evaluation,点击Assign,选择Spectrum Emission Masks。
3)点击Signaling Parameter→TPC,将Active TPC Setup 设置为max power,按协议配置,读取OBW
测试步骤:
| Occupied channel bandwidth / channel bandwidth | |||||
---|---|---|---|---|---|---|
1.4 MHz | 3 MHz | 5 MHz | 10 MHz | 15 MHz | 20MHz | |
Channel bandwidth [MHz] | 1.4 | 3 | 5 | 10 | 15 | 20 |
3.19、频谱模板(6.6.2.1)
测试步骤:
1)点击Measure,选择LTE1 Multi Eval进入测试界面。
2)点击Multi Evaluation,点击Assign,选择Spectrum Emission Masks。
3)点击Signaling Parameter→TPC,将Active TPC Setup设置为Max.Power,按协议进行配置
测试标准:
Table 6.6.2.1.5-1: General E-UTRA spectrum emission mask, E‑UTRA bands ≤ 3GHz
| Spectrum emission limit (dBm)/ Channel bandwidth | ||||||
ΔfOOB (MHz) | 1.4 MHz | 3.0 MHz | 5 MHz | 10 MHz | 15 MHz | 20 MHz | Measurement bandwidth |
0-1 | -8.5 | -11.5 | -13.5 | -16.5 | -18.5 | -19.5 | 30 kHz |
1-2.5 | -8.5 | -8.5 | -8.5 | -8.5 | -8.5 | -8.5 | 1 MHz |
2.5-2.8 | -23.5 | 1 MHz | |||||
2.8-5 |
| 1 MHz | |||||
5-6 |
| -23.5 | -11.5 | -11.5 | -11.5 | -11.5 | 1 MHz |
6-10 |
|
| -23.5 | 1 MHz | |||
10-15 |
|
|
| -23.5 | 1 MHz | ||
15-20 |
|
|
|
| -23.5 | 1 MHz | |
20-25 |
|
|
|
|
| -23.5 | 1 MHz |
Table 6.6.2.1.5-2: General E-UTRA spectrum emission mask, 3GHz < E‑UTRA bands ≤ 4.2GHz
| Spectrum emission limit (dBm)/ Channel bandwidth | ||||||
ΔfOOB (MHz) | 1.4 MHz | 3.0 MHz | 5 MHz | 10 MHz | 15 MHz | 20 MHz | Measurement bandwidth |
0-1 | -8.2 | -11.2 | -13.2 | -16.2 | -18.2 | -19.2 | 30 kHz |
1-2.5 | -8.2 | -8.2 | -8.2 | -8.2 | -8.2 | -8.2 | 1 MHz |
2.5-2.8 | -23.2 | 1 MHz | |||||
2.8-5 |
| 1 MHz | |||||
5-6 |
| -23.2 | -11.2 | -11.2 | -11.2 | -11.2 | 1 MHz |
6-10 |
|
| -23.2 | 1 MHz | |||
10-15 |
|
|
| -23.2 | 1 MHz | ||
15-20 |
|
|
|
| -23.2 | 1 MHz | |
20-25 |
|
|
|
|
| -23.2 | 1 MHz |
3.20、额外的频谱模板(6.6.2.2)
测试步骤:
与频谱模板相同,进入LTE Signaling→Config→Connection→Additional Spectrum Emission修改NS值。
3.21、ACLR临道泄露比(6.6.2.3)
测试步骤:
1)点击Measure,选择LTE1 Multi Eval进入测试界面。
2)点击Multi Evaluation,点击Select View选择Spectrum ACLR。
3)点击Signaling Parameter→TPC,将Active TPC Setup设置为Max.Power,按协议进行配置
测试标准:
Table 6.6.2.3.5.1-1: E-UTRA UE ACLR
| Channel bandwidth / E-UTRAACLR1 / measurement bandwidth | |||||
| 1.4 MHz | 3.0 MHz | 5 MHz | 10 MHz | 15 MHz | 20 MHz |
E-UTRAACLR1 | 29.2 dB | 29.2 dB | 29.2 dB | 29.2 dB | 29.2 dB | 29.2 dB |
Table 6.6.2.3.5.2-1: UTRA UE ACLR
| Channel bandwidth / UTRAACLR1/2 / measurement bandwidth | |||||
1.4 MHz | 3.0 MHz | 5 MHz | 10 MHz | 15 MHz | 20 MHz | |
UTRAACLR1 | 32.2 dB | 32.2 dB | 32.2 dB | 32.2 dB | 32.2 dB | 32.2 dB |
UTRAACLR2 | - | - | 35.2 dB | 35.2 dB | 35.2 dB | 35.2 dB |
四、接收机测试
4.1、接收机小灵敏度
测试步骤:
(1)点击Measure,选择LTE Ext.BLER进入测试界面。
2)点击LTE 1 Multi Eval进入测试界面。
3)点击LTE Single→Config→Uplink Power Control→Tx Power Control(TPC)选择Active TPC Setup为max power,在大功率下进行测试。
4)进入Config→Connection→Additional Spectrum Emission,根据测试频段选择对应的NS值。
Table 7.3.3-3: Network Signalling Value for reference sensitivity
E-UTRA Band | Network Signalling value |
2 | NS_03 |
4 | NS_03 |
10 | NS_03 |
12 | NS_06 |
13 | NS_06 |
14 | NS_06 |
17 | NS_06 |
19 | NS_08 |
21 | NS_09 |
23 | NS_03 |
30 | NS_21 |
66 | NS_03 |
5)点击Tasks→LTE Ext BLER Display→Table View Diagram View进行测试界面切换,修改屏幕下方的Subframe..进行子帧个数的修改。
4)调节RS EPRE来设置Full Cell BW Power为基准灵敏度,按ON/OFF键刷新界面,判断BLER是否小于5%,Throughput是否大于95%。
5)降低RS EPRE直到BLER大于5%,Throughput 小于95%,然后增加RS EPRE 到BLER再次小于5%,记录此时的Full Cell Power 为UE的小灵敏度。
6)改变Uplink RB重复步骤4)-5),记录不同RB下的UE小灵敏度。
测试标准:
在要求灵敏度下,误码率不大于5%,下表即为不同频段对应的灵敏度要求。
Table 7.3.5-1: Reference sensitivity QPSK PREFSENS
Channel bandwidth | ||||||
E-UTRA Band | 1.4MHz(dBm) | 3MHz(dBm) | 5MHz(dBm) | 10MHz(dBm) | 15MHz(dBm) | 20 MHz(dBm) |
1 | - | - | -99.3 | -96.3 | -94.5 | -93.3 |
2 | -102.0 | -99.0 | -97.3 | -94.3 | -92.5 | -91.3 |
3 | -101.0 | -98.0 | -96.3 | -93.3 | -91.5 | -90.3 |
4 | -104.0 | -101 | -99.3 | -96.3 | -94.5 | -93.3 |
5 | -102.5 | -99.5 | -97.3 | -94.3 |
|
|
6 | - | - | -99.3 | -96.3 |
|
|
7 | - | - | -97.3 | -94.3 | -92.5 | -91.3 |
8 | -101.5 | -98.5 | -96.3 | -93.3 |
|
|
9 | - | - | -98.3 | -95.3 | -93.5 | -92.3 |
10 | - | - | -99.3 | -96.3 | -94.5 | -93.3 |
11 | - | - | -99.3 | -96.3 |
|
|
12 | -101.0 | -98.0 | -96.3 | -93.3 |
|
|
13 |
|
| -96.3 | -93.3 |
|
|
14 |
| - | -96.3 | -93.3 |
|
|
... |
|
|
|
|
|
|
17 | - | - | -96.3 | -93.3 |
|
|
18 | - | - | -99.37 | -96.37 | -94.57 | - |
19 | - | - | -99.3 | -96.3 | -94.5 | - |
20 |
|
| -96.3 | -93.3 | -90.5 | -89.3 |
21 |
|
| -99.3 | -96.3 | -94.5 |
|
22 |
|
| -96.0 | -93.0 | -91.2 | -90.0 |
23 | -104.0 | -101 | -99.3 | -96.3 | -94.5 | -93.3 |
24 |
|
| -99.3 | -96.3 |
|
|
25 | -100.5 | -97.5 | -95.8 | -92.8 | -91.0 | -89.8 |
26 | -102 | -99 | -96.86 | -93.86 | -926 |
|
27 | -102.5 | -99.5 | -97.3 | -94.3 |
|
|
28 |
| -99.5 | -97.8 | -94.8 | -93.0 | -90.3 |
30 | - | - | -98.3 | -95.3 | - | - |
31 | -98.3 | -95.0 | -92.8 |
|
|
|
... |
|
|
|
|
|
|
33 | - | - | -99,3 | -96.3 | -94.5 | -93.3 |
34 | - | - | -99.3 | -96.3 | -94.5 | - |
35 | -105.5 | -101.5 | -99.3 | -96.3 | -94.5 | -93.3 |
36 | -105.5 | -101.5 | -99.3 | -96.3 | -94.5 | -93.3 |
37 | - | - | -99.3 | -96.3 | -94.5 | -93.3 |
38 | - | - | -99.3 | -96.3 | -94.5 | -93.3 |
39 | - | - | -99.3 | -96.3 | -94.5 | -93.3 |
40 | - | - | -99.3 | -96.3 | -94.5 | -93.3 |
41 | - | - | -97.3 | -94.3 | -92.5 | -91.3 |
42 | - | - | -98.0 | -95.0 | -93.2 | -92.0 |
43 | - | - | -98.0 | -95.0 | -93.2 | -92.0 |
44 |
| [-99.5] | [-97.3] | [-94.3] | [-92.5] | [-91.3] |
4.2、大输入电平(7.4)
测试步骤:
1)点击Measure,选择LTE Ext.BLER进入测试界面。
2)点击LTE 1 Multi Eval进入测试界面。
3)选择RS EPRE小区强度为-53.5dBm/15kHz,此时实际小区功率为对应Full Cell BW Pow.为-25.7dBm,选择下行/下行50RB,QPSK调制方式进行。
4)点击ON进行测试,观察BLER值是否小于5%,Throughput是否大于95%。
测试标准:
在小区功率为-25.7dBm时,误码率不大于5%。
Rx Parameter | Units | Channel bandwidth | |||||
---|---|---|---|---|---|---|---|
1.4MHz | 3 MHz | 5 MHz | 10MHz | 15MHz | 20MHz | ||
Wanted signal mean power | dBm | -25.7 |