The Impact of Gigabit LTE Technologies on the User Experience

Transcription

1 The Impact of Gigabit LTE Technologies on the User Experience Michael Thelander, President October 2017

2 Key Highlights A Category 16 Gigabit LTE smartphone meaningfully improves the user experience with real-world applications YouTube and Streaming Video Google-based Applications Gigabit LTE is more compelling than public Wi-Fi, thanks primarily to limited backhaul Gigabit LTE with LAA provides a great user experience with unlicensed spectrum A Category 16 smartphone greatly increases network efficiency with all conditions

3 Today s Agenda The Benefits of a Cat 16 Gigabit LTE Device with Real-World Apps The Benefits of Cat 16 Gigabit LTE versus Public Wi-Fi The Benefits of Cat 16 Gigabit LTE with LAA The Impact of Cat 16 Gigabit LTE Devices on Overall Spectral Efficiency

4 Google Play Download Excellent Conditions Cat 16 = Faster Downloads Cat 16 = Fewer Resources Angry Birds (348 MB file) downloaded 3 times Downloads occurred simultaneously on both phones *RSRP = -75 dbm; SINR = 24 db

5 Google Play Download Excellent Conditions Real Time Throughput Analysis Cat 16 = Higher MIMO Rank Cat 16 smartphone used 3 data streams for 100% of the download Cat 12 smartphone only supported 2 data streams *RSRP = -75 dbm; SINR = 24 db

6 Google Play Download Edge of Cell Conditions Cat 16 = Faster Downloads Cat 16 = Fewer Resources Cat 16 = Better MIMO Rank *RSRP = -111 dbm; SINR = 12.2 db

7 Google Play Download Edge of Cell Conditions Real Time Throughput Analysis *RSRP = -111 dbm; SINR = 12.2 db

8 Google Drive Downloads Excellent Conditions (3 videos, 1 2 GB Log File) Cat 16 = Faster Downloads Cat 16 = Fewer Resources *RSRP = -75 dbm; SINR = 24 db

9 Google Drive Download Excellent Conditions Real Time Throughput Analysis Cat 16 = Higher MIMO Rank Cat 16 uses at least 3 parallel data streams Cat 12 only uses 2 parallel data streams

10 Google Drive Downloads Edge of Cell Conditions Cat 16 = Faster Downloads Cat 16 = Fewer Resources Cat 16 = Better MIMO Rank Cat 16 uses 2 parallel data streams Cat 12 only uses 1 data stream *RSRP = -111 dbm; SINR = 12.2 db

11 Google Drive Downloads Edge of Cell Conditions Real Time Throughput Analysis *RSRP = -111 dbm; SINR = 12.2 db

12 Our Video Test Methodology Use Chromatic, a vision-based capture tool, to analyze video delivery performance as observed on the smartphone display Combine video results with chipset diagnostic message information Link Master Logging and Link Master Analyzer

13 YouTube Edge of Cell Conditions Real Time Throughput Analysis *RSRP = -111 dbm; SINR = 12.2 db

14 YouTube Edge of Cell Conditions Cat 16 = Fewer Resources Network efficiency gain due entirely to 4-way receive diversity *RSRP = -111 dbm; SINR = 12.2 db Benefits realized with moderate / low bit rates

15 Video 15 Mbps Encoding Edge of Cell Real Time Throughput Analysis *RSRP = -111 dbm; SINR = 12.2 db

16 Video 15 Mbps Encoding Edge of Cell Cat 16 = Higher MIMO Rank Cat 16 = Fewer Resources Cat 16 superior performance due entirely to 4-way receive diversity, which increased MIMO rank *RSRP = -111 dbm; SINR = 12.2 db

17 Video 15 Mbps Encoding Edge of Cell Audio/Video Synch Issues Video Freezes Video Impairments Cat 16 gives a better video viewing experience *RSRP = -111 dbm; SINR = 12.2 db

18 Video 15 Mbps Encoding Good Conditions Real Time Throughput Analysis * RSRP = -92 dbm; SINR = 18 db

19 Video 15 Mbps Encoding Good Conditions Cat 16 = Higher MIMO Rank Cat 16 = Fewer Resources Cat 16 used higher MIMO rank, up to Rank Indicator 4 * RSRP = -92 dbm; SINR = 18 db

20 Today s Agenda The Benefits of a Cat 16 Gigabit LTE Device with Real-World Apps The Benefits of Cat 16 Gigabit LTE versus Public Wi-Fi The Benefits of Cat 16 Gigabit LTE with LAA The Impact of Cat 16 Gigabit LTE Devices on Overall Spectral Efficiency

21 Google Play Cat 16 and Public Wi-Fi Google Drive Google Music Cat 16 Faster Downloads Cat 16 Faster Downloads Cat 16 Faster Downloads * LTE RSRP = -89 dbm; LTE SINR = 25 db

22 Today s Agenda The Benefits of a Cat 16 Gigabit LTE Device with Real-World Apps The Benefits of Cat 16 Gigabit LTE versus Wi-Fi The Benefits of Cat 16 Gigabit LTE with LAA The Impact of Cat 16 Gigabit LTE Devices on Overall Spectral Efficiency

23 Cat 16 with LAA versus Cat 12 Operator small cell deployment in downtown San Francisco Small cell supports one licensed band (Band 2, 20 MHz FDD) 3 unlicensed bands (20 MHz FDD each)

24 Walk Test (Cat 16 with LAA versus Cat 12) Real Time Throughput Analysis Total Throughput

25 Google Play Downloads (Cat 16 with LAA versus Cat 12) Real Time Throughput Analysis Total Throughput

26 Google Play Downloads (Cat 16 with LAA versus Cat 12) Cat 16 = Faster Downloads Cat 16 MIMO Rank Cat 16 Modulation Cat 16 used 4 data streams with high modulation in licensed band

27 Today s Agenda The Benefits of a Cat 16 Gigabit LTE Device with Real-World Apps The Benefits of Cat 16 Gigabit LTE versus Wi-Fi The Benefits of Cat 16 Gigabit LTE with LAA The Impact of Cat 16 Gigabit LTE Devices on Overall Spectral Efficiency

28 Our Drive Test Methodology Conduct all tests with a Cat 16 and a Cat 12 smartphone, operating in parallel Collect network parameters and device-specific performance information with XCAL-Solo Analyze results with XCAP post processing software

29 Suburban Network Efficiency Drive Test - Methodology 4x4 MIMO Cluster Band 4 (20 MHz FDD) Drive Test with Full Buffer UDP data transfers Cat 16 and Cat 12 smartphones operating in parallel 86 minutes of logged data Results filtered to exclude phones on different cells and no data transfers

30 Suburban Network Efficiency Drive Test - Results Cat 16 = Higher MIMO Rank Cat 16 = Higher Modulation

31 Suburban Network Efficiency Drive Test Results II Cat 16 performance gains were evident with all network conditions

32 Rural Network Efficiency Drive Test - Methodology 4x4 Cluster Band 4 (20 MHz FDD) with low signal strength (Median RSRP = -107 dbm) Drive Test with Full Buffer UDP data transfers Cat 16 and Cat 12 smartphones operating in parallel Drive route repeated twice Results filtered to exclude phones on different cells and no data transfers

33 Rural Network Efficiency Drive Test - Results Cat 16 = Higher Modulation Cat 16 = Higher MIMO Rank

34 Rural Network Efficiency Drive Test Results II

35 Suburban Network Efficiency Walk Test MIMO Rank (Cat 16 Smartphone) * RSRP = -75 dbm; SINR = 24 db

36 Suburban Network Efficiency Walk Test - Results Cat 16 = Higher MIMO Rank Cat 16 = Higher Modulation

37 * RSRP = -75 dbm; SINR = 24 db Suburban Network Efficiency Walk Test Results II

38 Final Thoughts A Cat 16 Gigabit LTE smartphone increases spectral efficiency by 30-40%, on average Higher MIMO rank with favorable conditions (RI=3 or 4 versus RI=2) 4-branch receive diversity increases MIMO rank, MCS values, etc. under all conditions The network efficiency gains are realized with real world applications A Cat 16 smartphone delivers a better user experience Faster downloads Videos that play uninterrupted versus freezes and impairments LAA improves the user experience with >2x data speeds compared with Cat 12 and only licensed spectrum while allowing the mobile operator to tap into unlicensed spectrum (3x20 MHz)

39