DFS Test Report

FCC ID: A4RG020B

Test Report

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FCCID_4150735

DFS Test Report Report No.: RF181001C08-2 FCC ID: A4RG020B Model Name: G020B Received Date: Oct. 01, 2018 Test Date: Dec. 10 ~ Dec. 12, 2018 Issued Date: Dec. 18, 2018 Applicant: Google LLC Address: 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Lab Address: No. 47-2, 14th Ling, Chia Pau Vil., Lin Kou Dist., New Taipei City, Taiwan (R.O.C.) Test Location: No. 19, Hwa Ya 2nd Rd., Wen Hwa Vil., Kwei Shan Dist., Taoyuan City 33383, TAIWAN (R.O.C.) FCC Registration / 788550 / TW0003 Designation Number: This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. The report must not be used by the client to claim product certification, approval, or endorsement by TAF or any government agencies. Report No.: RF181001C08-2 Page No. 1 / 24 Report Format Version: 6.1.2

Table of Contents Release Control Record .................................................................................................................................. 3 1 Certificate of Conformity...................................................................................................................... 4 2 EUT Information .................................................................................................................................... 5 2.1 Operating Frequency Bands and Mode of EUT .................................................................................. 5 2.2 EUT Software and Firmware Version .................................................................................................. 5 2.3 Description of Available Antennas to the EUT .................................................................................... 5 2.4 EUT Maximum Conducted Power ....................................................................................................... 6 2.5 EUT Maximum E.I.R.P. Power ............................................................................................................ 7 2.6 Transmit Power Control (TPC) ............................................................................................................ 7 2.7 Statement of Maunfacturer.................................................................................................................. 7 3 U-NII DFS Rule Requirements ............................................................................................................. 8 3.1 Working Modes and Required Test Items ........................................................................................... 8 3.2 Test Limits and Radar Signal Parameters........................................................................................... 9 4 Test & Support Equipment List ......................................................................................................... 12 4.1 Test Instruments ................................................................................................................................ 12 4.2 Description of Support Units ............................................................................................................. 12 5 Test Procedure .................................................................................................................................... 13 5.1 DFS Measurement System ............................................................................................................... 13 5.2 Calibration of DFS Detection Threshold Level .................................................................................. 14 5.3 Deviation from Test Standard ............................................................................................................ 14 5.4 Radiated Test Setup Configuration ................................................................................................... 15 5.4.1 Client without Radar Detection Mode ................................................................................................ 15 6 Test Results ......................................................................................................................................... 15 6.1 Summary of Test Results .................................................................................................................. 15 6.2 Test Results ....................................................................................................................................... 16 6.2.1 Test Mode: Device Operating In Client without Radar Detection Mode. ........................................... 16 6.2.2 Channel Closing Transmission and Channel Move Time.................................................................. 17 6.2.3 Non-Occupancy Period ..................................................................................................................... 20 6.2.4 Non-Associated Test.......................................................................................................................... 22 6.2.5 Non- Co-Channel Test ....................................................................................................................... 22 7. Appendix-A .......................................................................................................................................... 23 8. Information on the Testing Laboratories .......................................................................................... 24 Report No.: RF181001C08-2 Page No. 2 / 24 Report Format Version: 6.1.2

Release Control Record Issue No. Description Date Issued RF181001C08-2 Original release Dec. 18, 2018 Report No.: RF181001C08-2 Page No. 3 / 24 Report Format Version: 6.1.2

1 Certificate of Conformity Product: Smartphone Model Name: G020B Sample Status: Identical Prototype Applicant: Google LLC Test Date: Dec. 10 ~ Dec. 12, 2018 Standards: FCC Part 15, Subpart E (Section 15.407) KDB 905462 D02 UNII DFS Compliance Procedures New Rules v02 KDB 905462 D03 UNII Clients Without Radar Detection New Rules v01r02 The above equipment has been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample’s RF characteristics under the conditions specified in this report. Prepared by : , Date: Dec. 18, 2018 Celine Chou / Senior Specialist Approved by : , Date: Dec. 18, 2018 Bruce Chen / Project Engineer Report No.: RF181001C08-2 Page No. 4 / 24 Report Format Version: 6.1.2

2 EUT Information 2.1 Operating Frequency Bands and Mode of EUT Table 1: Operating Frequency Bands and Mode of EUT Operating Frequency Range Operational Mode 5250~5350MHz 5470~5725MHz Client without radar detection and ad   hoc function 2.2 EUT Software and Firmware Version Table 2: The EUT Software/Firmware Version No. Product Model No. Software/Firmware Version 1 Smartphone G020B PPB1.180926.001.A1 Note: 1. There’re 2 configurations for the EUT listed as below.  Main Sample: EUT + Battery 1  2nd Sample: EUT + Battery 2 After pre-tested with the EUT, only the worst configuration (main sample) was chosen for the final test. 2.3 Description of Available Antennas to the EUT Table 3: Antenna List Operation Frequency Range Ant. No. Antenna Type Max. Gain (dBi) (MHz) 0 PIFA 5250-5350 MHz -2.5 0 PIFA 5470-5725 MHz -3.6 1 PIFA 5250-5350 MHz -0.5 1 PIFA 5470-5725 MHz -1.2 Report No.: RF181001C08-2 Page No. 5 / 24 Report Format Version: 6.1.2

2.4 EUT Maximum Conducted Power Table 4: The Measured Conducted Output Power 802.11a Frequency Band Max. Power (MHz) Output Power (dBm) Output Power (mW) 5250~5350 20.38 109.156 5470~5725 20.48 111.694 802.11ac VHT20 Frequency Band Max. Power (MHz) Output Power (dBm) Output Power (mW) 5250~5350 20.41 109.803 5470~5725 20.48 111.575 802.11ac VHT40 Frequency Band Max. Power (MHz) Output Power (dBm) Output Power (mW) 5250~5350 20.37 108.903 5470~5725 20.36 108.525 802.11ac VHT80 Frequency Band Max. Power (MHz) Output Power (dBm) Output Power (mW) 5250~5350 13.60 22.886 5470~5725 20.22 105.083 Report No.: RF181001C08-2 Page No. 6 / 24 Report Format Version: 6.1.2

2.5 EUT Maximum E.I.R.P. Power Table 5: The EIRP Output Power List 802.11a Max. EIRP Power Frequency Band (MHz) Output Power (dBm) Output Power (mW) 5250~5350 19.88 97.275 5470~5725 19.28 84.723 802.11ac VHT20 Max. EIRP Power Frequency Band (MHz) Output Power (dBm) Output Power (mW) 5250~5350 19.91 97.949 5470~5725 19.28 84.723 802.11ac VHT40 Max. EIRP Power Frequency Band (MHz) Output Power (dBm) Output Power (mW) 5250~5350 19.87 97.051 5470~5725 19.16 82.414 802.11ac VHT80 Max. EIRP Power Frequency Band (MHz) Output Power (dBm) Output Power (mW) 5250~5350 13.10 20.417 5470~5725 19.02 79.799 2.6 Transmit Power Control (TPC) U-NII devices operating in the 5.25-5.35 GHz band and the 5.47-5.725 GHz band shall employ a TPC mechanism. The U-NII device is required to have the capability to operate at least 6 dB below the mean EIRP value of 30 dBm. A TPC mechanism is not required for systems with an e.i.r.p. of less than 500 mW. Maximum EIRP of this device is 97.949mW which less than 500mW, therefore it’s not require TPC function. Applicable E.I.R.P FCC 15.407 (h)(1) >500mW The TPC mechanism is required for system with an E.I.R.P of above 500mW √ <500mW The TPC mechanism is not required for system with an E.I.R.P of less 500mW 2.7 Statement of Maunfacturer Manufacturer statement confirming that information regarding the parameters of the detected Radar Waveforms is not available to the end user. And the device doesn’t have Ad Hoc mode on DFS frequency band. Report No.: RF181001C08-2 Page No. 7 / 24 Report Format Version: 6.1.2

3 U-NII DFS Rule Requirements 3.1 Working Modes and Required Test Items The manufacturer shall state whether the UUT is capable of operating as a Master and/or a Client. If the UUT is capable of operating in more than one operating mode then each operating mode shall be tested separately. See tables 6 and 7 for the applicability of DFS requirements for each of the operational modes. Table 6: Applicability of DFS Requirements Prior To Use a Channel Operational Mode Requirement Client without radar Client with radar Master detection detection Non-Occupancy Period   note  DFS Detection Threshold  Not required  Channel Availability Check Time  Not required Not required U-NII Detection Bandwidth  Not required  Note: Per KDB 905462 D03 UNII Clients Without Radar Detection New Rules v01r02 section (b)(5/6), If the client moves with the master, the device is considered compliant if nothing appears in the client non-occupancy period test. For devices that shut down (rather than moving channels), no beacons should appear. An analyzer plot that contains a single 30-minute sweep on the original channel. Table 7: Applicability of DFS Requirements during Normal Operation. Operational Mode Requirement Master or Client with radar Client without radar detection detection DFS Detection Threshold  Not required Channel Closing Transmission Time   Channel Move Time   U-NII Detection Bandwidth  Not required Additional requirements for devices with Master or Client with radar Client without radar detection multiple bandwidth modes detection U-NII Detection Bandwidth and Statistical All BW modes must be tested Not required Performance Check Channel Move Time and Channel Closing Test using widest BW mode Test using the widest BW mode Transmission Time available available for the link All other tests Any single BW mode Not required Note: Frequencies selected for statistical performance check (Section 7.8.4) should include several frequencies within the radar detection bandwidth and frequencies near the edge of the radar detection bandwidth. For 802.11 devices it is suggested to select frequencies in each of the bonded 20 MHz channels and the channel center frequency. Report No.: RF181001C08-2 Page No. 8 / 24 Report Format Version: 6.1.2

3.2 Test Limits and Radar Signal Parameters Detection Threshold Values Table 8: DFS Detection Thresholds for Master Devices And Client Devices With Radar Detection Value Maximum Transmit Power (See Notes 1, 2, and 3) EIRP ≥ 200 milliwatt -64 dBm EIRP < 200 milliwatt and -62 dBm power spectral density < 10 dBm/MHz EIRP < 200 milliwatt that do not meet the -64 dBm power spectral density requirement Note 1: This is the level at the input of the receiver assuming a 0 dBi receive antenna. Note 2: Throughout these test procedures an additional 1 dB has been added to the amplitude of the test transmission waveforms to account for variations in measurement equipment. This will ensure that the test signal is at or above the detection threshold level to trigger a DFS response. Note3: EIRP is based on the highest antenna gain. For MIMO devices refer to KDB Publication 662911 D01. Table 9: DFS Response Requirement Values Parameter Value Non-occupancy period Minimum 30 minutes Channel Availability Check Time 60 seconds 10 seconds Channel Move Time See Note 1. 200 milliseconds + an aggregate of 60 Channel Closing Transmission Time milliseconds over remaining 10 second period. See Notes 1 and 2. Minimum 100% of the U-NII 99% transmission power U-NII Detection Bandwidth bandwidth. See Note 3 Note 1: Channel Move Time and the Channel Closing Transmission Time should be performed with Radar Type 0. The measurement timing begins at the end of the Radar Type 0 burst. Note 2: The Channel Closing Transmission Time is comprised of 200 milliseconds starting at the beginning of the Channel Move Time plus any additional intermittent control signals required to facilitate a Channel move (an aggregate of 60 milliseconds) during the remainder of the 10 second period. The aggregate duration of control signals will not count quiet periods in between transmissions. Note 3: During the U-NII Detection Bandwidth detection test, radar type 0 should be used. For each frequency step the minimum percentage of detection is 90 percent. Measurements are performed with no data traffic. Report No.: RF181001C08-2 Page No. 9 / 24 Report Format Version: 6.1.2

Parameters of DFS Test Signals Step intervals of 0.1 microsecond for Pulse Width, 1 microsecond for PRI, 1 MHz for chirp width and 1 for the number of pulses will be utilized for the random determination of specific test waveforms. Table 10: Short Pulse Radar Test Waveforms Minimum Minimum Pulse Width PRI Number Percentage of Radar Type Number of (µsec) (µsec) of Pulses Successful Trials Detection 0 1 1428 18 See Note 1 See Note 1 1 1 Test A: 15 unique 60% 30 PRI values randomly selected from the list of 23 PRI values in Table 5a ------------------------ Test B: 15 unique PRI values randomly selected within the range of 518-3066 μsec, with a minimum increment of 1 μsec, excluding PRI values selected in Test A 2 1-5 150-230 23-29 60% 30 3 6-10 200-500 16-18 60% 30 4 11-20 200-500 12-16 60% 30 Aggregate (Radar Types 1-4) 80% 120 Note 1: Short Pulse Radar Type 0 should be used for the detection bandwidth test, channel move time, and channel closing time tests. Report No.: RF181001C08-2 Page No. 10 / 24 Report Format Version: 6.1.2

Table 11: Long Pulse Radar Test Waveform Pulse Chirp Number Of Minimum Percentage Minimum Radar PRI Number Of Width Width Pulses Per Of Successful Number Of Type (µsec) Bursts (µsec) (MHz) Burst Detection Trials 5 50-100 5-20 1000-2000 1-3 8-20 80% 30 Three subsets of trials will be performed with a minimum of ten trials per subset. The subset of trials differ in where the Long Pulse Type 5 Signal is tuned in frequency. a) the Channel center frequency b) tuned frequencies such that 90% of the Long Pulse Type 5 frequency modulation is within the low edge of the UUT Occupied Bandwidth c) tuned frequencies such that 90% of the Long Pulse Type 5 frequency modulation is within the high edge of the UUT Occupied Bandwidth It include 10 trails for every subset, the formula as below, For subset case 1: the center frequency of the signal generator will remain fixed at the center of the UUT Channel. For subset case 2: to retain 90% frequency overlap between the radar signal and the UUT Occupied Bandwidth, the center frequency of the signal generator will vary for each of the ten trials in subset case 2. The center frequency of the signal generator for each trial is calculated by: +(0.4∗ [ ]) For subset case 3: to retain 90% frequency overlap between the radar signal and the UUT Occupied Bandwidth, the center frequency of the signal generator will vary for each of the ten trials in subset case 3. The center frequency of the signal generator for each trial is calculated by: −(0.4∗ [ ]) Table 12: Frequency Hopping Radar Test Waveform Pulse Hopping Hopping Minimum Percentage Minimum Radar PRI Pulses per Width Rate Sequence Length Of Successful Number Of Type (µsec) Hop (µsec) (kHz) (msec) Detection Trials 6 1 333 9 0.333 300 70% 30 Report No.: RF181001C08-2 Page No. 11 / 24 Report Format Version: 6.1.2

4 Test & Support Equipment List 4.1 Test Instruments Table 13: Test Instruments List Date Of Due Date Of Description & Manufacturer Model No. Brand Calibration Calibration Spectrum analyzer ESR R&S Mar. 01, 2018 Feb. 28, 2019 Signal generator MXG KEYSIGHT Dec 28, 2017 Dec 27,2018 Horn antenna BBHA 9120 D Schwarzbeck Dec 14, 2017 Dec. 13, 2018 RF coaxial cable SUCOFLEX 104 HUBER SUHNER Aug. 23, 2018 Aug. 22, 2019 4.2 Description of Support Units Table 14: Support Unit Information. No. Product Brand Model No. FCC ID Gain 5G Ant gain : 1.61dBi 1 Router NETGEAR R7800 PY315100319 Maximum EIRP : 25.47dBm Note: This device was functioned as a Master Slave device during the DFS test. Table 15: Software/Firmware Information. No. Product Model No. Software/Firmware Version 1. Router R7800 V1.0.2.58 Report No.: RF181001C08-2 Page No. 12 / 24 Report Format Version: 6.1.2

5 Test Procedure 5.1 DFS Measurement System A complete DFS Measurement System consists of two subsystems: (1) the Radar Signal Generating Subsystem and (2) the Traffic Monitoring Subsystem. The control PC is necessary for generating the Radar waveforms in Table 10, 11 and 12. The traffic monitoring subsystem is specified to the type of unit under test (UUT). Radiated Setup Configuration of DFS Measurement System System testing will be performed with channel-loading using means appropriate to the data types that are used by the unlicensed device. The following requirements apply: a) The data file must be of a type that is typical for the device (i.e., MPEG-2, MPEG-4, WAV, MP3, MP4, AVI, etc.) and must generally be transmitting in a streaming mode. b) Software to ping the client is permitted to simulate data transfer but must have random ping intervals. c) Timing plots are required with calculations demonstrating a minimum channel loading of V approximately 17% or greater. d) Unicast or Multicast protocols are preferable but other protocols may be used. The appropriate protocol used must be described in the test procedures. Report No.: RF181001C08-2 Page No. 13 / 24 Report Format Version: 6.1.2

Wireless Traffic Loading Traffic Signal Noise Floor 5.2 Calibration of DFS Detection Threshold Level The measured channel is 5500MHz, 5510MHz and 5530MHz. The radar signal was the same as transmitted channels, and injected into the antenna of AP (master) or Client Device with Radar Detection, measured the channel closing transmission time and channel move time. The calibrated conducted detection threshold level is set to -64dBm. The tested level is lower than required level hence it provides margin to the limit. Radiated setup configuration of Calibration of DFS Detection Threshold Level The radar signal generate system is gererating waveform pattern of radar types. The amplitude of the radar signal generator system is adjusted to yield a level of–64 dBm as measured on the spectrum analyzer. The interference detection threshold level is lower than – 64dBm hence it provides margin to the limit. 5.3 Deviation from Test Standard No deviation. Report No.: RF181001C08-2 Page No. 14 / 24 Report Format Version: 6.1.2

5.4 Radiated Test Setup Configuration 5.4.1 Client without Radar Detection Mode 6 Test Results 6.1 Summary of Test Results Clause Test Parameter Remarks Pass/Fail 15.407 DFS Detection Threshold Not Applicable NA 15.407 Channel Availability Check Time Not Applicable NA 15.407 Channel Move Time Applicable Pass 15.407 Channel Closing Transmission Time Applicable Pass 15.407 Non- Occupancy Period Applicable Pass 15.407 Uniform Spreading Not Applicable NA 15.407 U-NII Detection Bandwidth Not Applicable NA 15.407 Non-associated test Applicable Pass 15.407 Non-Co-Channel test Applicable Pass Report No.: RF181001C08-2 Page No. 15 / 24 Report Format Version: 6.1.2

6.2 Test Results 6.2.1 Test Mode: Device Operating In Client without Radar Detection Mode. Client with injection at the Master. (The radar test signals are injected into the Master Device) DFS Detection Threshold For detection threshold level of -64dBm, the required signal strength at AP antenna location is -64 dBm. The tested level is lower than required level for 1dB, hence it provides margin to the limit. Radar signal Noise Floor Radar Signal 0 Report No.: RF181001C08-2 Page No. 16 / 24 Report Format Version: 6.1.2

6.2.2 Channel Closing Transmission and Channel Move Time Radar Signal 0 802.11ac VHT20 Radar Signal Traffic Signal Noise Floor Note: 1. T1 denotes the start of Channel Move Time upon the end of the last Radar burst. T2 denotes the data transmission time of 200ms from T1. T3 denotes the end of Channel Move Time.T4 denotes the 10 second from T1 to observe the aggregate duration of transmissions. 2. Channel Move Time: 468.085ms Channel Closing Transmission Time: 25.000ms Radar Signal Traffic Signal Noise Floor Note: An expanded plot for the device vacates the channel in the required 500ms. Report No.: RF181001C08-2 Page No. 17 / 24 Report Format Version: 6.1.2

Radar Signal 0 802.11ac VHT40 Radar Signal Traffic Signal Noise Floor Note: 1. T1 denotes the start of Channel Move Time upon the end of the last Radar burst. T2 denotes the data transmission time of 200ms from T1. T3 denotes the end of Channel Move Time.T4 denotes the 10 second from T1 to observe the aggregate duration of transmissions. 2. Channel Move Time: 531.915ms Channel Closing Transmission Time: 5.625ms Radar Signal Traffic Signal Noise Floor Note: An expanded plot for the device vacates the channel in the required 500ms. Report No.: RF181001C08-2 Page No. 18 / 24 Report Format Version: 6.1.2

Radar Signal 0 802.11ac VHT80 Radar Signal Traffic Signal Noise Floor Note: 1. T1 denotes the start of Channel Move Time upon the end of the last Radar burst. T2 denotes the data transmission time of 200ms from T1. T3 denotes the end of Channel Move Time.T4 denotes the 10 second from T1 to observe the aggregate duration of transmissions. 2. Channel Move Time: 446.809ms Channel Closing Transmission Time: 6.250ms Radar Signal Traffic Signal Noise Floor Note: An expanded plot for the device vacates the channel in the required 500ms. Report No.: RF181001C08-2 Page No. 19 / 24 Report Format Version: 6.1.2

6.2.3 Non-Occupancy Period Associate test: During the 30 minutes observation time, UUT did not make any transmissions on a channel after a radar signal was detected on that channel by either the Channel Availability Check or the In-Service Monitoring. 1) EUT (Client) links with master on 5500MHz. Waveform of EUT links up with Master 2) Client plays specified files via master. Waveform of transmission Report No.: RF181001C08-2 Page No. 20 / 24 Report Format Version: 6.1.2

3) Radar signal 0 is applied to the Master device and WiFi traffic signal stop immediately. 4) 5500MHz has been monitored in 30 minutes period. In this period, no any transmission occurs. Plot of 30minutes period 802.11ac VHT20 Traffic Signal Injected into Radar Noise Floor Note: Test setup are shown on Test setup photo.pdf Report No.: RF181001C08-2 Page No. 21 / 24 Report Format Version: 6.1.2

6.2.4 Non-Associated Test Master was off. During the 30 minutes observation time, The UUT did not make any transmissions in the DFS band after UUT power up. Noise Floor 6.2.5 Non- Co-Channel Test The UUT was investigated after radar was detected and confirmed that no co-channel operation with radars. Report No.: RF181001C08-2 Page No. 22 / 24 Report Format Version: 6.1.2

7. Appendix-A NON BEACON ON DFS BAND 1) Test results demonstrating no any beacon on DFS band after power up. 2) Observation time is 10min after power up. Client (UUT) no transmit on 802.11ac VHT20 mode Client (UUT) no transmit on 802.11ac VHT40 mode Client (UUT) no transmit on 802.11ac VHT80 mode Report No.: RF181001C08-2 Page No. 23 / 24 Report Format Version: 6.1.2

8. Information on the Testing Laboratories We, Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, were founded in 1988 to provide our best service in EMC, Radio, Telecom and Safety consultation. Our laboratories are FCC recognized accredited test firms and accredited and approved according to ISO/IEC 17025. If you have any comments, please feel free to contact us at the following: Linko EMC/RF Lab Hsin Chu EMC/RF/Telecom Lab Tel: 886-2-26052180 Tel: 886-3-6668565 Fax: 886-2-26051924 Fax: 886-3-6668323 Hwa Ya EMC/RF/Safety Lab Tel: 886-3-3183232 Fax: 886-3-3270892 Email: service.adt@tw.bureauveritas.com Web Site: www.bureauveritas-adt.com The address and road map of all our labs can be found in our web site also. --- END --- Report No.: RF181001C08-2 Page No. 24 / 24 Report Format Version: 6.1.2


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Document Modified: 2019-03-27 12:51:53
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