A4RGLU0G RFExp Part 2 TAS validation
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Document DEVICE REPORTGetApplicationAttachment.html?id=5398102FCC RF Exposure Report Report No. : FA121931-05E FCC TAS validation Part 2: Tests under dynamic transmit power scenarios FCC ID Equipment Model Name Applicant Standard : A4RGLU0G : Phone : GLU0G : Google LLC 1600 Amphitheatre Parkway, Mountain View, California, 94043 USA : FCC 47 CFR Part 2 (2.1093) We, SPORTON INTERNATIONAL INC., would like to declare that the tested sample provide by manufacturer and the test data has been evaluated in accordance with the test procedures given in 47 CFR Part 2.1093 and FCC KDB and has been pass the FCC requirement. The test results in this report apply exclusively to the tested model / sample. Without written approval of SPORTON INTERNATIONAL INC. EMC & Wireless Communications Laboratory, the test report shall not be reproduced except in full. Approved by: Cona Huang / Deputy Manager Sporton International Inc. EMC & Wireless Communications Laboratory No.52, Huaya 1st Rd., Guishan Dist., Taoyuan City 333, Taiwan TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 1 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Table of Contents Report No. : FA121931-05E 1. Introduction ................................................................................................................................................................... 4 2. Tx Varying Transmission Test Cases and Test Proposal .......................................................................................... 4 3. SAR Time Averaging Validation Test Procedures...................................................................................................... 5 3.1 Test sequence determination for validation ............................................................................................................ 5 3.2 Test configuration selection criteria for validating TAS ........................................................................................... 5 3.3 Test procedures for conducted power measurements............................................................................................ 7 4. Test Configurations .....................................................................................................................................................14 4.1 WWAN (sub-6) transmission .................................................................................................................................14 4.2 Test case list for sub-6GHz transmissions.............................................................................................................17 5. Conducted Power Test Results for Sub-6 TAS validation ........................................................................................18 5.1 Measurement set-up .............................................................................................................................................18 6. Test results: ..................................................................................................................................................................20 6.1 Information ............................................................................................................................................................20 6.2 Measured Plimit and Pmax ...................................................................................................................................21 6.3 Time-varying Tx power measurement results........................................................................................................23 6.4 Change operate states ..........................................................................................................................................31 6.5 LTE Handover WCDMA results .............................................................................................................................33 6.6 Change in band/time-window test results..............................................................................................................35 6.7 Change in call test results .....................................................................................................................................39 6.8 Switch in SAR exposure test results .....................................................................................................................41 6.9 Re-selection in call test results..............................................................................................................................43 7. Conclusions..................................................................................................................................................................45 8. Annex ............................................................................................................................................................................45 8.1 Test sequence is generated based on below parameters of the DUT: ...................................................................45 8.2 Test Sequence A waveform: ..................................................................................................................................45 8.3 Test Sequence B waveform:..................................................................................................................................46 9. Test Equipment List .....................................................................................................................................................47 10. References ..................................................................................................................................................................47 TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 2 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E History of this test report Report No. FA121931-05E Version 01 Description Initial issue of report Issued Date Aug. 17, 2021 TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 3 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 1. Introduction Report No. : FA121931-05E This purpose of this Part 2 report is to demonstrate that the DUT complies with FCC RF exposure compliance requirement under varying Tx power transmission scenarios, thus validating the Samsung S.LSI TAS algorithm feature for FCC equipment authorization of the handset. The values of Plimit used in this report per scenario are determined in Part 0 report. 2. Tx Varying Transmission Test Cases and Test Proposal The following scenarios are covered in this report to demonstrate compliance with FCC RF exposure in Tx varying transmission conditions. 1. During a time-varying Tx power transmission to prove that TAS feature accounts for Tx power variations in time accurately. 2. During a call disconnect and re-establish scenario to prove that the TAS feature accounts for history of Tx power from past accurately 3. During a technology/band handover to prove that TAS feature accounts for history across transitions in band/technology 4. During RSI (Radio SAR index) change to prove that TAS feature functions correctly to meet compliance limits across RSI changes 5. During time averaging window change to prove that TAS feature properly handles the change from one time averaging window to another as specified by FCC, and meets the normalized FCC limit of 1.0 at all time As described in Part 0, the RF exposure is proportional to the Tx power for sub-6. Thus, we rely on conducted power measurements (sub-6) in each dynamic case to demonstrate that overall RF exposure is within the FCC limit. The overall procedure for validating the test is summarized below: 1. Measure conducted power over time , denoted as (), with time index for each radio 2. Convert measured powers to RF exposure values using linear relationship shown below. In below expression, P,sub-6 would be the measured power at which FR1 technology meets measured SAR level of __ as described in Part 0. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 4 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E SAR (t) = TxPower(t) __ ,-6 (2.1.1) 3. Compute the average RF exposure over the most recent measurement duration which are denoted as for sub6 . These durations are as specified by FCC. This measurement duration interval is then given by [ - , ] for sub-6. 4. Divide the RF exposure by corresponding ISED limit and ensure the sum denoted as TER (total exposure ratio) is less than 1 for all. The following equation describes the calculation of TER and its target constraint. LSAR is the number of fixed, mobile or portable RF sources using SAR-based formula, the expressions below is general considering a number radios in general denoted by . -1 , 1 =0 (2.1.2) 3. SAR Time Averaging Validation Test Procedures In this section, we cover the test plan and test procedure for validating Samsung SLSI TAS feature for sub-6 scenarios. 3.1 Test sequence determination for validation Two sequences for time varying Tx power are pre-defined as given below for sub-6 case. 1. Test Sequence A is generated with two power levels. One is maximum power level Pmax and the other is lower power level. The lower power level is defined as 3dB lower value than maximum power level. At first, maximum power level is applied for 120 seconds. After this, lower power level is used until this test is finished. 2. Test Sequence B is generated at multiple power levels that are specified in the Appendix as a function of Pmax and Plimit. 3.2 Test configuration selection criteria for validating TAS This section provides general guidance for selecting test cases in TAS feature validation. 3.2.1 Test configuration selection for time-varying Tx power transmission The Samsung S.LSI TAS algorithm is independent of band, modes or channel of any technology. Hence, we can validate using one or two combinations of band/mode/channel per technology. The criteria for selecting these would be based on TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 5 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E the relative value of Plimit and Pmax as determined in Part 0. Essentially, we need to pick this combination such that Plimit is less than Pmax so that the TAS algorithm will enforce power restriction. Two bands can be selected from Part 0 with different values of Plimit select one corresponding to lowest value and another being highest but still less than Pmax. 3.2.2 Test configuration selection for change in call The criteria to select the technology/band for transition between call setup and call drop is to choose the one with least Plimit among all bands in Part 0. The test is performed with DUT requested power at Pmax so that the Samsung S.LSI TAS feature enforces power restriction for longest duration. The call change is performed when the DUT is operating with restricted power. One such test is sufficient since behavior is not dependent on band/technology. 3.2.3 Test configuration for change in technology/band/window FCC specifies different measurement durations for time averaging based on operating frequency. The change of operating frequency can result in change of time window for averaging, for e.g. change from 100s averaging for frequency below 3GHz to 60s averaging for frequency above 3GHz in sub-6. The criteria for selecting test case to demonstrate compliance across time window change is to pick a technology/band corresponding to each time window from Part 0 such that Plimit is less than Pmax. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 6 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 3.3 Test procedures for conducted power measurements Report No. : FA121931-05E This section provides general conducted power measurement procedures to perform compliance test under dynamic scenarios described in Section 2. 3.3.1 Time-varying Tx power transmission scenario This test is performed with two pre-defined test sequences as described in Section 3.1 for all technologies operating on sub-6GHz applying to both LTE and NR as selected in Section 3.2.1. The purpose of the test is to demonstrate the maximum power limiting enforcement and that the time-averaged SAR does not exceed the FCC limit at all times. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 7 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E 3.3.1.1 Test procedure 1. Using the Pmax and Plimit obtained in Part 0/1, generate the test sequence of power levels for each selected technology/band. Both test sequences A and B are generated. Maximum power can be changed according to DUT test results 2. Establish the connection of the DUT to the call box in the selected RAT, with the call box requesting the DUT Tx power to be according to the sequence determined in Step 1. An initial value of Tx power will be set to 0dBm for 100s before the desired test sequence starts to help with post-processing of the time-average value with the very first value in the sequence. This is illustrated in the figure below SAR Moving average TAS algorithm calculates allowable SAR budget for next window considering remaining SAR budget Max allowable SAR for next window (Max allowable Tx power is also given) SAR measurement duration (X sec = M windows = M*N slots) SAR Budget time(s) Consumed SAR SAR average window (N slots) Average SAR value in a slot can be calculated from average Tx power in the slot (Assume that SAR vs Tx power relation is obtained from real measurement) Figure 3.3-1 SAR measurement from Tx power using block-wise processing TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 8 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 3. Release connection. Report No. : FA121931-05E 4. After the completion of the test, prepare one plot with the following information: a. Instantaneous Tx power versus time measured in Step 2 b. Requested Tx power versus time used in Step 2 c. Time-averaged power over 100s using instantaneous values from Step 2 d. Power level Plimit which is determined as meeting SAR target in Part 0/1 5. Make a second plot containing the following information: a. Computed time-averaged 1gSAR versus time determined in Step 2 b. FCC 1gSAR limit of 1.6W/kg The pass condition is to demonstrate time-averaged 1gSAR versus time shown in Step 5 value versus time does not exceed the FCC limit of 1.6 W/kg throughout the test duration. We would also demonstrate that time-averaged power does not exceed the Plimit at any time in the plot in Step 4. 3.3.2 Change in call scenario This test is to demonstrate that Samsung S.LSI TAS feature correctly accounts for past Tx powers during time- averaging when a new call is established. The call change has to be carried out when the power limit enforcement is ongoing. 3.3.2.1 Test procedure 1. Establish radio connection of DUT with call box e.g. using LTE technology 2. Configure call box to set DUT Tx power to a low value of -10dBm for 100s. 3. Configure call box to send "ALL UP" power control commands and continue LTE transmission from DUT so that maximum power of Pmax is achieved. 4. After 60s of transmission at Pmax power level, release the call from call box. 5. After 10s, re-establish the LTE connection from call box to DUT and repeat sending "ALL UP" power control command to bring the Tx power to Pmax level again. 6. Continue LTE transmission at Pmax level for another 110s. 7. Release LTE connection. 8. After the completion of the test, prepare one plot with the following information (a) Instantaneous Tx power versus time (b) Requested Tx power versus time (c) Time-averaged power over 100s using instantaneous values and (d) Power level Plimit which is determined as meeting SAR target TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 9 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E 9. Make a second plot containing the following information (a) Computed time-averaged 1gSAR versus time and (b) FCC 1gSAR limit of 1.6W/kg Pass condition is to demonstrate time-averaged 1gSAR value versus time does not exceed the FCC limit of 1.6 W/kg throughout the test duration. It is required to check if SAR calculation is accounting for call drop and connection. Current TAS algorithm software makes the UE estimate the exact amount of Tx power and average SAR even during call drop and call re-establishment event. The UE stores time information when it goes into a sleep mode and wake-up to calculate Tx power on / off duration. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 10 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 3.3.3 Change in technology/band/window Report No. : FA121931-05E This test is to demonstrate that Samsung S.SLSI TAS feature can properly handle change of technology/band and consequently time window as necessary during handover scenarios. Since both Plimit and window duration can change across bands, we have to use separate equations below for converting Tx power to SAR as well as apply a combined SAR exposure criterion as shown below.Test procedure SAR 1 (t) = TxPower(t) __ ,6 (3.3.1) SAR 2 (t) = TxPower(t) __ ,6 (3.3.2) where ,1, would correspond to measured power at which first technology/band meets measured SAR level of __1 as described in Part 0 wit time-averaging duration of 1, . Similarly, the quantities ,2, __arget2, 2, are defined for the second technology/band. When first band is chosen below 3GHz, we would have 1, = 100, and by choosing second ban to be above 3GHz we would use 2, = 60. On the other hand, when first band is chosen above 3GHz and second band below 3GHz, we would use 1, = 60 and 1, = 100. 3.3.3.1 Test procedure for switching from 100s to 60s and vice-versa 1. Establish radio connection of DUT with call box e.g. using LTE technology in band A (e.g B2) which has 100s averaging duration. 2. Configure call box to set DUT Tx power to a low value of -10dBm for 100s. 3. Configure call box to send "ALL UP" power control commands and continue LTE transmission from DUT so that maximum power of Pmax is achieved. Continue transmission at the maximum power for at least 105s. 4. Change band from band A (e.g.B2) to another LTE band B (e.g. B48), which should correspond to a change in averaging duration from 100s to 60s. Continue call in band B with call box requesting maximum power for at least 60s 5. Change band from band B(e.g.B48) back to the first band A(e.g.B2) and continue call at maximum power for at least 100s. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 11 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6. Release LTE connection Report No. : FA121931-05E 7. After the completion of the test, prepare one plot with the following information for each band (a) Instantaneous Tx power versus time (b) Time-averaged power for each band according to their averaging duration and (c) Plimit corresponding to each band 8. Make a second plot containing the following information (a) Computed time-averaged 1gSAR versus time for each band (b) Sum of time-averaged SAR computed according to Eqn (3.3.1) and (3.3.2), and (c) FCC 1gSAR limit of 1.6W/kg Pass condition is to demonstrate total time-averaged 1gSAR value versus time does not exceed the FCC limit of 1.6 W/kg throughout the test duration. It is required to check if power limiting enforcement is operated as expected when band change occurs in-between. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 12 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 3.3.3.2 Test procedure for switching from 60s to 100s and vice-versa Report No. : FA121931-05E 1. Establish radio connection of DUT with call box e.g. using LTE technology in band B (B48) which has 60s averaging duration. 2. Configure call box to set DUT Tx power to a low value of -10dBm for 100s. 3. Configure call box to send "ALL UP" power control commands and continue LTE transmission from DUT so that maximum power of Pmax is achieved. Continue transmission at the maximum power for at least 65s. 4. Change band from band B (e.g.B48) to another LTE band A (e.g.B2), which should correspond to a change in averaging duration from 60s to 100s. Continue call in band A with call box requesting maximum power for at least 100s 5. Change band from band A(e.g.B2) back to the first band B(e.g.B48) and continue call at maximum power for at least 60s. 6. Release LTE connection 7. After the completion of the test, prepare one plot with the following information for each band (a) Instantaneous Tx power versus time (b) Time-averaged power for each band according to their averaging duration and (c) Plimit corresponding to each band 8. Make a second plot containing the following information (a) Computed time-averaged 1gSAR versus time for each band (b) Sum of time-averaged SAR computed according to Eqn (3.3.1) and (3.3.2), and (c) FCC 1gSAR limit of 1.6W/kg Pass condition is to demonstrate total time-averaged 1gSAR value versus time does not exceed the FCC limit of 1.6 W/kg throughout the test duration. It is required to check if power limiting enforcement is operated as expected when band change occurs in-between. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 13 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 4. Test Configurations Report No. : FA121931-05E 4.1 WWAN (sub-6) transmission 1. The Plimit values correspond to SAR_design_target. 2. GSM and WCDMA don't support time average feature of dynamic power varying, the power will be fixed at the static reduce power level at different exposure conditions for RF exposure compliance. For the GSM (TDD) Plimit power levels in the table correspond to the burst average power levels which don't account for TX duty cycle. 3. FCC ID: A4RG8V0U and FCC ID: A4RGLU0G use the same printed circuit board (PCB), the difference is that the variant model A4RGLU0G depopulates the FR2 related components. For time-varying TX power transmission case 1 and case 2, for each air interface it is sufficient to select 1 frequency band which associates with the lowest Plimit to verify TAS compliance Table 4.1.1: Plimit for supported technologies and bands (Plimit corresponding to SAR design target ) Wireless technology/ band (No Accounting duty cycle) Config Antenna duty cycle Head Hotspot Body-worn/Extremity Standalone Simultaneous Simultaneous Standalone Simultaneous Index 2 Index 3 Index 4 Index 5 Index 6 P limit Burst average power (dBm) Pmax Burst average power (dBm) GSM850 GPRS 1TX TX0 GSM850 GPRS 2TX TX0 GSM850 GPRS 3TX TX0 GSM850 GPRS 4TX TX0 GSM1900 GPRS 1TX TX0 GSM1900 GPRS 2TX TX0 GSM1900 GPRS 3TX TX0 GSM1900 GPRS 4TX TX0 WCDMA B2 TX0 WCDMA B4 TX0 WCDMA B5 TX0 0 12.50% 42.50 41.30 0 25.00% 39.50 38.30 0 37.50% 38.00 36.80 0 50.00% 36.50 35.30 2 12.50% 41.00 39.80 2 25.00% 38.00 36.80 2 37.50% 36.00 34.80 2 50.00% 35.00 33.80 2 100.00% 31.20 30.00 2 100.00% 31.70 30.50 0 100.00% 31.00 29.80 42.40 39.40 37.60 36.40 30.10 27.10 25.30 24.10 22.40 22.00 28.30 43.60 40.60 38.80 37.60 31.30 28.30 26.50 25.30 23.60 23.20 29.50 42.40 39.40 37.60 36.40 30.10 27.10 25.30 25.30 23.60 22.80 28.30 33.00 31.50 30.50 29.50 30.00 28.50 28.00 27.00 24.30 24.30 24.40 Table 4.1.2: Plimit for supported technologies and bands (Plimit corresponding to SAR design target ) Wireless technology/ band (No Accounting duty cycle) Config Antenna duty cycle Head Hotspot Body-worn/Extremity Standalone Simultaneous Simultaneous Standalone Simultaneous Index 2 Index 3 Index 4 Index 5 Index 6 P limit Burst average power (dBm) P Max Burst average power (dBm) GSM850 GPRS 1TX TX1 GSM850 GPRS 2TX TX1 GSM850 GPRS 3TX TX1 GSM850 GPRS 4TX TX1 GSM1900 GPRS 1TX TX1 GSM1900 GPRS 2TX TX1 GSM1900 GPRS 3TX TX1 GSM1900 GPRS 4TX TX1 WCDMA B2 TX1 WCDMA B4 TX1 WCDMA B5 TX1 1 12.50% 35.00 33.80 1 25.00% 32.00 30.80 1 37.50% 30.00 28.80 1 50.00% 29.00 27.80 0 12.50% 38.50 37.30 0 25.00% 35.50 34.30 0 37.50% 34.00 32.80 0 50.00% 32.50 31.30 0 100.00% 28.10 26.90 0 100.00% 30.20 29.00 1 100.00% 24.50 23.30 37.80 34.80 32.80 31.80 32.20 29.20 27.70 26.20 22.10 25.10 28.10 39.00 36.00 34.00 33.00 33.40 30.40 28.90 27.40 23.30 26.30 29.30 37.80 34.80 32.80 31.80 32.20 29.20 27.70 26.20 22.10 25.10 28.10 33.00 31.00 29.70 28.50 29.80 27.70 26.50 25.20 23.30 23.50 24.20 TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 14 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Table 4.1.3: Plimit for supported technologies and bands (Plimit corresponding to SAR design target ) Wireless technology/ band (Accounting duty cycle) Config Antenna duty cycle Head Hotspot Body-worn/Extremity Standalone Simultaneous Simultaneous Standalone Simultaneous P Max Index 2 Index 3 Index 4 Index 5 Index 6 Time-average P limit power (dBm) time-average power (dBm) LTE B7 TX0 2 100.00% 30.7 29.5 20.1 21.3 20.1 24.5 LTE B12/17 TX0 0 100.00% 31.7 30.5 29.8 31 29.8 24.5 LTE B13 TX0 0 100.00% 31.4 30.2 28.9 30.1 28.9 24.5 LTE B14 TX0 0 100.00% 31.1 29.9 29 30.2 29 24.5 LTE B25/2 TX0 2 100.00% 31.2 30 21 22.2 22.2 24.5 LTE B26/5 TX0 0 100.00% 30.9 29.7 28.9 30.1 28.9 24.5 LTE B30 TX0 2 100.00% 33.9 32.7 20.8 22 20.8 24.5 LTE B41/38 TX0 2 63.30% 30 28.8 21.3 22.5 21.3 22.5 LTE B38 HPUE TX0 2 43.30% 30 28.8 21.3 22.5 21.3 22.4 LTE B41 HPUE TX0 2 43.30% 30 28.8 21.3 22.5 21.3 22.9 LTE B48 TX0 2 63.30% 28.6 27.4 21.3 23.4 22.2 22.5 LTE B66/4 TX0 2 100.00% 32.6 31.4 20.7 22.8 22.8 24.5 LTE B71 TX0 0 100.00% 31.6 30.4 29.1 30.3 29.1 24.5 FR1 n25/2 TX0 2 100.00% 30.5 29.3 20.9 22.1 22.1 24.5 FR1 n5 TX0 0 100.00% 30.6 29.4 28.5 29.7 28.5 24.5 FR1 n7 TX0 2 100.00% 30.4 29.2 20.4 21.6 20.4 24.5 FR1 n12 TX0 0 100.00% 31.7 30.5 30.1 31.3 30.1 24.5 FR1 n30 TX0 2 100.00% 31.6 30.4 21.2 22.4 21.2 24.5 FR1 n41/n38 TX0 1 100.00% 17.5 16.3 19.9 22.5 21.3 24.5 FR1 n41 HPUE TX0 1 50.00% 17.5 16.3 19.9 22.5 21.3 23 FR1 n66 TX0 2 100.00% 32 30.8 21.2 22.4 22.4 24.5 FR1 n71 TX0 0 100.00% 32.5 31.3 29.4 30.6 29.4 24.5 FR1 n77 TX0 6 100.00% 27.9 26.7 21.1 22.3 22.3 24.3 FR1 n77 HPUE TX0 6 50.00% 27.9 26.7 21.1 22.3 22.3 23 1. LTE and 5GNR TDD: Plimit power levels in the table correspond to the time-averaged power levels which accounts for TX duty cycle. 2. Maximum target power, Pmax, is configured in NV settings in EUT to limit maximum transmitting power. This power is converted into peak power in NV settings for TDD schemes. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 15 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Table 4.1.4: Plimit for supported technologies and bands (Plimit corresponding to SAR design target ) Wireless technology/ band (Accounting duty cycle) Config Antenna duty cycle Head Hotspot Body-worn/Extremity Standalone Simultaneous Simultaneous Standalone Simultaneous P Max Index 2 Index 3 Index 4 Index 5 Index 6 Time-average P limit power (dBm) time-average power (dBm) LTE B7 TX1 0 100.00% 28.1 26.9 21 22.2 22.2 23.1 LTE B12/17 TX1 1 100.00% 28.5 27.3 29.1 30.3 29.1 24.2 LTE B13 TX1 1 100.00% 28.7 27.5 28.9 30.1 28.9 24.2 LTE B14 TX1 1 100.00% 26.6 25.4 29.1 30.3 29.1 24.2 LTE B25/2 TX1 0 100.00% 28.5 27.3 22.6 23.8 22.6 23.6 LTE B26/5 TX1 1 100.00% 27.5 26.3 27.9 29.1 27.9 24 LTE B30 TX1 0 100.00% 30.4 29.2 24.7 27 25.8 23.4 LTE 41/38 TX1 0 63.30% 29 27.8 20.4 23.8 22.6 21.5 LTE B38 HPUE TX1 0 43.30% 29 27.8 20.4 23.8 22.6 21.1 LTE B41 HPUE TX1 0 43.30% 29 27.8 20.4 23.8 22.6 22 LTE B48 TX1 2 63.30% 32.1 30.9 25 29.3 28.1 19.9 LTE B66 TX1 0 100.00% 29.1 27.9 23.4 24.6 23.4 23.4 LTE B71 TX1 1 100.00% 29.8 28.6 29.7 30.9 29.7 24 FR1 n25/2 TX1 0 100.00% 27.9 26.7 22.3 23.5 22.3 23.6 FR1 n5 TX1 1 100.00% 26.3 25.1 27.9 29.1 27.9 24.1 FR1 n7 TX1 0 100.00% 27.4 26.2 20.8 22 22 23.7 FR1 n12 TX1 1 100.00% 27.6 26.4 29 30.2 29 24.1 FR1 n30 TX1 0 100.00% 28.7 27.5 24.5 27.4 26.2 23.5 FR1 n38 TX1 5 100.00% 21.4 20.2 20.8 22 22 24.2 FR1 n41 TX1 5 100.00% 21.4 20.2 20.8 22 22 24 FR1 n41 HPUE TX1 5 50.00% 21.4 20.2 20.8 22 22 22.4 FR1 n66 TX1 0 100.00% 29.6 28.4 23.1 24.3 23.1 23.2 FR1 n71 TX1 1 100.00% 28.9 27.7 29.8 31 29.8 24.1 FR1 n77 TX1 2 100.00% 35.9 34.7 27.3 29.7 28.5 22.3 FR1 n77 HPUE TX1 2 50.00% 35.9 34.7 27.3 29.7 28.5 21 3. LTE and 5GNR TDD: Plimit power levels in the table correspond to the time-averaged power levels which accounts for TX duty cycle. 4. Maximum target power, Pmax, is configured in NV settings in EUT to limit maximum transmitting power. This power is converted into peak power in NV settings for TDD schemes. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 16 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 4.2 Test case list for sub-6GHz transmissions Report No. : FA121931-05E To validate TAS algorithm in various sub-6GHz conditions, the chosen TC (Test Case) list is defined as in Table 4.2.1. Table 4.2.1 Sub-6GHz TAS validation test case list No. Test Scenario 1 2 Time-varying Tx power transmission 3 4 5 Change operate states Wireless technology Handover 6 TAS to non TAS Antenna switch/ Time Window 7 change case 2 100s-60s-100s Antenna switch/ Time Window 8 change case 1 60s-100s-60s 9 Drop call 10 SAR exposure switch 11 Re-selection in call Test case LTE_Time_Varying_Tx_Power_Case_1 SA_FR1_Time_Varying_Tx_Power_Case_1 LTE_Time_Varying_Tx_Power_Case_2 SA_FR1_Time_Varying_Tx_Power_Case_2 SA_FR1_RF_SAR_Index_Change LTE_to_WCDMA_H.O. LTE_Averaging_Time_Window_Change 1 LTE_Averaging_Time_Window_Change 2 Call_Disconnect_Reestablishment NSA_FR1_Dominant_Power_Switching NR_TO_LTE_IRAT_HO Test configuration LTE Band 7 FR1 41 (SA Mode) LTE Band 7 FR1 41 (SA Mode) FR1 41 (SA Mode)_Index 5 to Index 3 LTE Band 7 ,WCDMA B4 LTE Band 7 to LTE Band 48 LTE Band 48 to LTE Band 7 LTE Band 7 FR n41 (NSA), LTE Band 25 FR1 n41(SA) to LTE Band 7 TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 17 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E 5. Conducted Power Test Results for Sub-6 TAS validation 5.1 Measurement set-up LTE NR NR Sub6 Signal Figure 5.1-1 Test set-up for legacy and sub 6GHz TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 18 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report The test setup for TAS validation with sub-6GHz RATs only is shown in Figure 5.1-1. Report No. : FA121931-05E Power readings for each active technology are recorded every 100ms and dumped in an excel file. A post- processing tool is used to extract data from the excel file and plot the required metrics such as time-averaged power, SAR and TER values versus time as described in Section 3.3. In summary, the tests have to be executed as following procedure. 1. Measure conduction sub 6GHz Tx power corresponds to SAR regulation. 2. Execute time-varying test scenarios. And record sub 6GHz power using sub 6GHz power meter equipment. 3. The time interval between subsequent conducted power measurements is 0.1s (typically much less than 1 second) 4. Plot the recorded results over measurement time. And evaluate the results for validation. 5. The required Power level is burst average power level controlled by call box, the power varying measurement correspond to time-average power levels after accounting for duty cycle in the case TDD modulation schemes (e.g. LTE, 5G FR1 TDD bands). TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 19 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6. Test results: 6.1 Information The following section contains the test results for the test cases in the Table 4.2.1 Report No. : FA121931-05E TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 20 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6.2 Measured Plimit and Pmax Report No. : FA121931-05E The measured for all the selected radio configurations are listed in following table. was also measured for radio configurations selected for testing time-varying Tx power transmission scenario in order to generate test sequences following the test procedures. Table6.2.1 Measured and of selected radio configurations item Test Scenario Antenna Power index Test band 1 TX0_2 2 TX0_1 Time-varying Tx power transmission 3 TX0_2 4 TX0_1 TX0_1 5 6.2.4 Change in operating state TX0_1 TX0_2 6 LTE_to_WCDMA_H.O. TX0_2 7 LTE_Averaging_Time_Window_Change TX0_2 1 TX0_6 8 LTE_Averaging_Time_Window_Change TX0_6 2 TX0_2 9 Call_Disconnect_Reestablishment TX0_2 TX0_2 10 NSA_FR1_Dominant_Power_Switching TX0_1 TX0_1 11 NR_TO_LTE_IRAT_HO TX1_0 4 LTE Band 7 3 FR1 41 (SA Mode) 4 LTE Band 7 3 FR1 41 (SA Mode) 5 FR1 41 (SA Mode) 3 FR1 41 (SA Mode) 4 LTE Band 7 4 WCDMA B4 4 LTE Band 7 4 LTE Band 48 4 LTE Band 48 4 LTE Band 7 4 LTE Band 7 4 LTE Band 25 4 FR1 41 (NSA Mode) 3 FR1 n41 PC3 (SA Mode) 4 LTE Band 7 Mode QPSK BPSK QPSK BPSK BPSK BPSK QPSK RMC QPSK QPSK QPSK QPSK QPSK QPSK BPSK BPSK QPSK Pmax measured BW/RB/offset Setting Pmax (dBm) (dBm) 20M/1/0 24.5 23.7 Plimit Measured Total Setting Plimit Uncertainty (dBm) (dBm) (dB) 20.1 20.5 1 135M/35/69 24.5 23.9 16.3 16.8 1 20M/1/0 24.5 23.7 20.1 20.5 1 135M/135/69 24.5 23.9 16.3 16.8 1 135M/135/69 24.5 23.9 22.5 22.4 1 135M/135/69 24.5 23.9 16.3 16.8 1 20M/1/0 24.5 23.7 20.1 20.5 1 - 24.3 22.1 22 22.1 1 20M/1/0 24.5 23.7 20.1 20.5 1 20M/1/0 22.5 21.8 21.3 21.8 1 20M/1/0 22.5 21.8 21.3 21.8 1 20M/1/0 24.5 23.7 20.1 20.5 1 20M/1/0 24.5 23.7 20.1 20.5 1 20M/1/53 24.5 24 21 20.9 1 135M/135/69 24.5 23.9 19.9 19.5 1 100M/135/69 24.5 23.8 19.9 19.7 1 20M/1/0 23.1 23.1 21 20.9 1 Note that the EUT has multiple power indexes to manage the output power for different conditions corresponding to RF exposure conditions in above table, detailed power index trigger conditions are illustrated in the operational description, and 1g and 10g SAR design target are shown in the part 0 report. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 21 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Table6.2.2 Sub-6 summary test results item Test Scenario Antenna Power index Test band 1 TX0_2 2 TX0_1 Time-varying Tx power transmission 3 TX0_2 4 TX0_1 TX0_1 5 6.2.4 Change in operating state TX0_1 TX0_2 6 LTE_to_WCDMA_H.O. TX0_2 7 LTE_Averaging_Time_Window_Change TX0_2 1 TX0_6 8 LTE_Averaging_Time_Window_Change TX0_6 2 TX0_2 9 Call_Disconnect_Reestablishment TX0_2 TX0_2 10 NSA_FR1_Dominant_Power_Switching TX0_1 TX0_1 11 NR_TO_LTE_IRAT_HO TX1_0 4 LTE Band 7 3 FR1 41 (SA Mode) 4 LTE Band 7 3 FR1 41 (SA Mode) 5 FR1 41 (SA Mode) 3 FR1 41 (SA Mode) 4 LTE Band 7 4 WCDMA B4 4 LTE Band 7 4 LTE Band 48 4 LTE Band 48 4 LTE Band 7 4 LTE Band 7 4 LTE Band 25 4 FR1 41 (SA Mode) 3 FR1 n41 PC3 (SA Mode) 4 LTE Band 7 Mode QPSK BPSK QPSK BPSK BPSK BPSK QPSK RMC QPSK QPSK QPSK QPSK QPSK QPSK BPSK BPSK QPSK 1g SAR BW/RB/offset design target (W/kg) 20M/1/0 0.72 135M/35/69 0.72 20M/1/0 0.72 135M/135/69 0.72 135M/135/69 0.95 135M/135/69 0.72 20M/1/0 0.72 - 0.72 20M/1/0 0.72 20M/1/0 0.72 20M/1/0 0.72 20M/1/0 0.72 20M/1/0 0.72 20M/1/53 0.72 135M/135/69 0.72 100M/135/69 0.72 20M/1/0 0.72 1g Time average SAR (W/kg) 0.786 0.781 0.797 0.834 0.827 0.822 0.814 0.786 0.828 0.737 0.786 deviation (dB) Total Uncertainty (dB) 0.38 1 0.35 1 0.44 1 0.64 1 1 0.60 1 1 0.58 1 1 0.53 1 1 0.38 1 0.61 1 1 0.10 1 1 0.38 1 TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 22 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6.3 Time-varying Tx power measurement results Report No. : FA121931-05E Following the test procedure in Section 3.3, the conducted Tx power measurement results for all selected test cases are listed in this section. In all conducted Tx power plots, the blue line shows the measured instantaneous power using the power meter, the red line shows the time-averaged Tx power and yellow line shows the Plimit value corresponding to design target. In all SAR plots, the dotted blue line shows the time-averaged 1gSAR while the red line shows the corresponding FCC limit of 1.6W/Kg. Time-varying Tx power measurements were conducted for TC #1-4 inTable 6.2.1. by generating the test sequence A or B given in Appendix. 6.3.1 TC01: LTE Band 7_Time_Varying_Tx_Power_Case_1 Figure 6.3-1 Time average conducted power Figure 6.3-1 shows the conducted Tx power plot with calculated time-averaged power based on the measured instantaneous Tx power with 1gSAR FCC Limit value. As shown in Figure 6.3-1, it is confirmed for time- average Tx power that the FCC limit was not exceeded, and that the averaged Tx power is smaller than the target power, and it will saturate to target power with little margin. Figure 6.3-2 shows the plot of calculated time-averaged 1gSAR for this test demonstrating that exposure is well below the FCC limit of 1.6W/Kg. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 23 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Figure 6.3-2 Total time-averaged SAR FCC 1gSAR limit Max 100s-time average 1gSAR (blue curve) Device uncertainty 1.6 W/kg 0.786 W/kg 1 dB TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 24 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6.3.2 TC02: FR1 n41 SA mode_Time_Varying_Tx_Power_Case_2 Report No. : FA121931-05E Figure 6.3-3 Time-average conducted power Figure 6.3-3 shows the instantaneous and time-averaged Tx power for this test. As shown in Figure 6.3-3, it is confirmed for time-average Tx power that the FCC limit was not exceeded, and that the averaged Tx power is lower than the value of Plimit. Figure 6.3-4 shows the plot of calculated time-averaged 1gSAR for this test demonstrating that exposure is well below the FCC limit of 1.6W/Kg. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 25 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Figure 6.3-4 Total time-averaged SAR FCC 1gSAR limit Max 100s-time average 1gSAR (blue curve) Device uncertainty 1.6 W/kg 0.781W/kg 1 dB TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 26 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6.3.3 TC03: LTE Band 7 mode_Time_Varying_Tx_Power_Case_3 Report No. : FA121931-05E Figure 6.3-5 Conducted Tx power Figure 6.3-5 shows the instantaneous and time-averaged Tx power with test sequence B. Figure 6.3-6 shows the plot of calculated time-averaged 1gSAR for this test demonstrating that exposure is well below the FCC limit of 1.6W/Kg. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 27 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Figure 6.3-6 Total time-averaged SAR FCC 1gSAR limit Max 100s-time average 1gSAR (blue curve) Device uncertainty 1.6 W/kg 0.797W/kg 0.8 dB TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 28 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6.3.4 TC04: FR1 n41 SA mode_Time_Varying_Tx_Power_Case_4 Report No. : FA121931-05E Figure 6.3-7 Conducted Tx power Figure 6.3-7 shows the instantaneous and time-averaged Tx power with test sequence B. Figure 6.3-8 shows the plot of calculated time-averaged 1gSAR for this test demonstrating that exposure is well below the FCC limit of 1.6W/Kg. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 29 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Figure 6.3-8 Total time-averaged SAR in F_TC04 FCC 1gSAR limit Max 100s time average 1gSAR (blue curve) Device uncertainty 1.6 W/kg 0.834 W/kg 1 dB TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 30 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6.4 Change operate states Report No. : FA121931-05E The test results in this section are obtained following the procedure in Section 3.3.2. The test cases correspond to TC#5 in Table 6.2.1. 6.4.1 TC5: SA_FR1 n41_RF_SAR_Index_Change Figure 6.4-1 Conducted Tx power for SAR states change Figure 6.4-1 shows the instantaneous and time-averaged conducted Tx power for both SA FR1 Band n41 for the duration of the test. Around time stamp of ~330s, the RFI value is changed from power index 5 to power index 3, resulting in reduction of target time-averaged power of SA FR1 Band n41. It can be seen that Plimit value of power index 5 is lower than that of power index 3, so in power index 5 region, more Tx power is limited compared to power index 3 region. Figure 6.4-2 shows the time-averaged 1gSAR value for each of power index 3 and power index 5 value, as well as the total SAR value. We can see that the total 1gSAR is higher during the band transitions, but is always under the total FCC limit of 1.6W/Kg. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 31 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Figure 6.4-2 Total time-averaged SAR FCC 1gSAR limit Max sum of calculated average SARs (yellow curve) Device uncertainty 1.6 W/kg 0.827 W/kg 1 dB TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 32 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6.5 LTE Handover WCDMA results Report No. : FA121931-05E The test results in this section are obtained following the procedure in Section 3.3.2. The test cases correspond to TC#6 in Table 6.2.1. 6.5.1 TC6: LTE Band 7 TAS to WCDMA Band 4 nonTAS H.O. Figure 6.5-1 Conducted Tx power for SAR TAS to nonTAS H.O Figure 6.5-1 shows the instantaneous and time-averaged conducted Tx power for both LTE Band 7 and WCDMA Band 4 for the duration of the test. Around time stamp of ~220s, a handover from LTE Band 7 to WCDMA Band 7 was executed, resulting in reduction of time-averaged power of LTE Band 7 and simultaneous increase in time- averaged power of WCDMA Band 4. Because WCDMA is nonTAS RAT, it always transmits maximum power. But when remaining SAR value is low after handover, nonTAS would limit the Tx power for a second to satisfy SAR compliance. Figure 6.5-2 shows the time-averaged 1gSAR value for each of LTE Band 7 and WCDMA Band 4 as well as the total SAR value. We can see that the total 1gSAR is higher during the band transitions, but is always under the total FCC limit of 1.6W/Kg. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 33 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Figure 6.5-2 Total time-averaged SAR FCC 1gSAR limit Max sum of calculated average SARs (yellow curve) Device uncertainty 1.6 W/kg 0.822 W/kg 1 dB TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 34 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6.6 Change in band/time-window test results Report No. : FA121931-05E The test results in this section are obtained following the procedure in Section 3.3.2. The test cases correspond to TC#7-8 in Table 6.2.1. 6.6.1 TC7: LTE_Averaging_Time_Window_Change_1 (LTE Band 7 ant 2 to LTE Band 48 ant 6) Figure 6.6-1 Conducted Tx power for SAR windowchange Figure 6.6-1 shows the instantaneous and time-averaged conducted Tx power for both LTE Band 7 and Band 48 for the duration of the test. Around time stamp of ~240s, a handover from Band 7 to Band 48 was executed, resulting in reduction of time-averaged power of Band 7 and simultaneous increase in time-averaged power of Band 48. Around time stamp of ~300s, handover back to Band 7 was executed, resulting in reduction of time-averaged power of Band 48 and increase of time-averaged power of Band 7. It can be seen that transition time of time-averaged values for Band 7 is longer than Band 48, which is the consequence of 100s time- averaging for Band 7 versus shorter 60s averaging for Band 48. Figure 6.6-2 shows the time-averaged 1gSAR value for each of Band 7 and Band 48, as well as the total SAR value. We can see that the total 1gSAR is higher during the band transitions, but is always under the total FCC limit of 1.6W/Kg. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 35 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Figure 6.6-2 Total time-averaged SAR FCC 1gSAR limit Max sum of calculated average SARs (yellow curve) Device uncertainty 1.6 W/kg 0.814 W/kg 1 dB TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 36 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E 6.6.2 TC8: LTE_Averaging_Time_Window_Change_2 (LTE Band 48 ant 6 to LTE Band 7 ant 2) Figure 6.6-3 Conducted TxPower in SAR Window Change test Figure 6.6-3 shows the instantaneous and time-averaged conducted Tx power for both LTE Band 7 and Band 48 for the duration of the test. Around time stamp of ~200s, a handover from Band 48 to Band 7 was executed, resulting in reduction of time-averaged power of Band 48 and simultaneous increase in time-averaged power of Band 7. Around time stamp of ~380s, handover back to Band 48 was executed, resulting in reduction of time-averaged power of Band 7 and increase of time-averaged power of Band 48. It can be seen that transition time of time-averaged values for Band 7 is longer than Band 48, which is the consequence of 100s time- averaging for Band 7 versus shorter 60s averaging for Band 48. Figure 6.6-4 shows the time-averaged 1gSAR value for each of Band 7 and Band 48, as well as the total SAR value. We can see that the total 1gSAR is higher during the band transitions, but is always under the total FCC limit of 1.6W/Kg. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 37 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Figure 6.6-4 Total time-averaged SAR FCC 1gSAR limit Max sum of calculated average SARs (yellow curve) Device uncertainty 1.6 W/kg 0.786 W/kg 1 dB TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 38 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6.7 Change in call test results Report No. : FA121931-05E The test results in this section are obtained following the procedure in Section 3.3.1. The test case corresponds to TC#9 in Table 6.2.1. 6.7.1 TC9: LTE Band 7_Call_Disconnect_Reestablishment Figure 6.7-1 Conducted Tx power in Call_Disconnect_Reestablishment Figure 6.7-1 shows the instantaneous and time-averaged Tx power for this test. The call disconnected around 170s and resumed after 10s. It is confirmed for time-average Tx power that the FCC limit was not exceeded, and that the averaged Tx power is lower than the value of Plimit. Figure 6.7-2 shows the plot of calculated time-averaged 1gSAR for this test demonstrating that exposure is well below the FCC limit of 1.6W/Kg. Looking at the results, it can be seen that even if transmission is stopped due to a call drop, the SAR value measured for a period of time window is stored in the window section and is continuously checked. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 39 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Figure 6.7-2 Total time-averaged SAR FCC 1gSAR limit Max 60s time average 1gSAR (blue curve) Device uncertainty 1.6 W/kg 0.825 W/kg 1 dB TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 40 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6.8 Switch in SAR exposure test results Report No. : FA121931-05E The test results in this section are obtained following the procedure in Section 3.3.2. The test cases correspond to TC#10 in Table 6.2.1. 6.8.1 TC10: NSA_FR1_Dominant_Power_Switching (ENDC LTE Band 25_FR1 n41) In this LTE Band 25+FR1 n41 NSA scenario, we first establish LTE and NR call. In the first part of test, LTE is sent to lowest transmit power using "ALL DOWN" power control commands from call box while NR is sent to maximum power using "ALL UP" power control commands from call box. This would correspond to FR1 dominant SAR scenario and lasts about 110s. In the second part of test, LTE is sent "ALL UP" commands and transmissions are continued, resulting in LTE+FR1 SAR scenario lasting another 110s. In the third part of test, NR is sent "ALL DOWN" power control commands so that it becomes an FR1 dominant SAR scenario for 110s. Finally, both LTE and NR connections are released. Figure 6.8-1 Time average SAR of LTE B25 and FR1 n41 in EN-DC case Figure 6.8-1 shows the instantaneous and time-averaged Tx power for both LTE band B25 and NR FR1 band n41 versus time. When both LTE and FR1 operate, the SAR value was the highest instantaneously, but it can be seen that sum of average power in LTE and FR1 decreases again as soon as it is turned off. Figure 6.8-2 shows the computed time-averaged SAR value for LTE and FR1 as well as the sum. It was confirmed that algorithm operated under the SAR design target + total uncertainty, while also being under the FCC limit of 1.6W/Kg at all times. After the operation of FR1 is turned off, it can also be seen that the average power of LTE increases. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 41 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Figure 6.8-2 Total time-averaged SAR FCC 1gSAR limit Max sum of calculated average SARs (yellow curve) Device uncertainty 1.6 W/kg 0.737 W/kg 1 dB TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 42 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 6.9 Re-selection in call test results Report No. : FA121931-05E The test results in this section are obtained following the procedure in Section 3.3.2. The test cases correspond to TC#11 in Table 6.2.1. 6.9.1 TC11: FR1 n41 to LTE Band 7 IRAT Re-selection 6 Figure 6.9-1 Conducted Tx power for SAR IRAT re-selection Figure 6.9-1 shows the instantaneous and time-averaged conducted Tx power for both LTE Band 7 and NR FR1 Band n41 for the duration of the test. Around time stamp of ~310s, a RAT re-selection from LTE Band 7 to NR FR1 Band n41 was executed, resulting in reduction of time-averaged power of Band 25 and simultaneous increase in time-averaged power of Band n41. Figure 6.9-2 shows the time-averaged 1gSAR value for each of LTE Band 7 and NR FR1 Band n41, as well as the total SAR value. We can see that the total 1gSAR is higher during the band transitions, but is always under the total FCC limit of 1.6W/Kg. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 43 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E Figure 6.9-2 Total time-averaged SAR FCC 1gSAR limit Max sum of calculated average SARs (yellow curve) Device uncertainty 1.6 W/kg 0.786 W/kg 1 dB TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 44 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 7. Conclusions Report No. : FA121931-05E Samsung S.LSI TAS feature employed in this product has been validated through the conducted power measurement as demonstrated in this report, the power limiting enforcement is effective and the total normalized time-averaged RF exposure does not exceed 1.0 for all the transmission scenarios. Therefore, the EUT complies with FCC RF exposure requirement. 8. Annex 8.1 Test sequence is generated based on below parameters of the DUT: 1. Measured maximum power (Pmax) 2. Measured Tx power (Plimit) to satisfy SARCompliance 3. Setup time to make SARRemaining be full 4. Do test according to test sequence 8.2 Test Sequence A waveform: Based on the parameters above, the Test Sequence A is generated with two power levels. One is maximum power level and the other is lower power level. The lower power level is defined as 3dB lower value than maximum power level. At first, maximum power level is applied for 120 seconds (SAR_time_window x 1.2). After then, lower power level is used until this test is finished. TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 45 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report Report No. : FA121931-05E 8.3 Test Sequence B waveform: Based on the parameters above, the Test Type B is generated with pre-defined power levels, which is described in Table 8.3.1. Table 8.3.1 Table of test sequence B Time duration (second) 15 20 20 10 20 15 15 20 10 15 10 20 10 15 10 20 15 15 20 10 20 20 15 Power level (dB) Plimit - 5 Plimit Plimit + 5 Plimit 6 Pmax Plimit Plimit -7 Pmax Plimit-5 Plimit Plimit-6 Plimit + 5 Plimit 4 Plimit Plimit 6 Pmax Plimit-8 Plimit Pmax Plimit 9 Plimit + 5 Plimit Plimit 5 TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 46 of 47 Issued Date : Aug. 17, 2021 FCC RF Exposure Report 9. Test Equipment List Report No. : FA121931-05E Manufacturer Name of Equipment Type/Model Serial Number Calibration Last Cal. Due Date Anritsu Radio Communication Analyzer MT8821C 6201381768 Mar. 11, 2021 Mar. 10, 2022 Anritsu 5G Wireless Test Platform MT8000A 6262208374 Mar. 05, 2021 Mar. 04, 2022 Testo Hygro meter 608-H1 45196600 Nov. 10, 2020 Nov. 09, 2021 Anritsu Signal Generator MG3710A 6201502524 Nov. 11, 2020 Nov. 10, 2021 Anritsu Power Meter ML2496A 2119003 Jun. 09, 2021 Jun. 08, 2022 Anritsu Power Sensor MA2411B 1911333 Jun. 01, 2021 May. 31, 2022 Anritsu Power Sensor MA2411B 1911334 Jun. 01, 2021 May. 31, 2022 Warison 10-50 GHz Directional Coupler WCOU-10-50S-10 WR889BMC481 Note 1 ATM 500M-18GHz Dual Directional Coupler C122H-10 P610410z-02 Note 1 Woken Attenuator 1 WK0602-XX N/A Note 1 Woken Attenuator 2 PE7005-10 N/A Note 1 Woken Attenuator 3 PE7005- 3 N/A Note 1 Note (1) : Prior to conducted power measurement, the path loss from the EUT to the power meter, which includes the RF cable, attenuator and directional coupler, was measured and determined. 10. References The following documents contain reference in this technical document. [1] 3GPP TR 37.815: Study on high power User Equipment (UE) (power class 2) for E-UTRA (Evolved Universal Terrestrial Radio Access) - NR Dual Connectivity (EN-DC) (1 LTE FDD band + 1 NR TDD band) TEL : 886-3-327-3456 FAX : 886-3-328-4978 Page : 47 of 47 Issued Date : Aug. 17, 2021
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