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The Matrix: Quantifying the Benefits of 64T64R Massive MIMO with Beamforming and Multi-User MIMO Capabilities

Published by Signals Research Group Product code 769360
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The Matrix: Quantifying the Benefits of 64T64R Massive MIMO with Beamforming and Multi-User MIMO Capabilities
Published: November 29, 2018 Content info: 89 Pages
Description

SRG conducted the first independent benchmark study of Massive MIMO. For this study, we tested in Dallas, Texas with the Sprint LTE TDD network (Band 41) by comparing the results of side-by-side 64T64R and 8T8R antenna systems.

Highlights of the Report include the following:

Our Thanks . We did this study with the logistical support of Accuver Americas who provided us with its suite of drive test tools. We used XCAL-Auto to remotely control and monitor the test activities with the eight remote Galaxy S8 smartphones which were located throughout the network. We used XCAL-Solo with each S8 smartphone to log the data and we used XCAP to post process and analyze the data. SRG takes full responsibility for the data collection and the analysis provided in the report.

Our Methodology . We logged chipset diagnostic messages on eight Galaxy S8 smartphones distributed throughout the sector (commercial and non-commercial radio channels). The selected cell site supported 8T8R or 64T64R, making it possible to compare performance with very similar conditions. The device placements included ideal locations and distributed locations with a mix of SINR. We also included mobility and the impact of device proximity as part of the analysis. Finally, we did side-by-side testing with two smartphones, one locked to 8T8R and one locked to 64T64R to look at link budget comparisons.

The Results . We observed up to a 3.4x increase in downlink sector throughput and up to an 8.9x increase in the uplink sector throughput versus 8T8R (obviously the gain is substantially higher relative to 2T2R). Results varied based on the test conditions that we identified. Link budget tests revealed close to a triple-digit improvement in uplink data speeds. Preliminary results for the downlink also showed strong gains. Future improvements in 64T64R are forthcoming based on likely vendor product roadmaps.

A Must Read . This report is a "must read" for any organization interested in Massive MIMO and its implications for increasing spectral efficiency, either with LTE or with 5G mid-band deployments.

Table of Contents

Table of Contents

1.0 Executive Summary

2.0 Key Observations

3.0 MU-MIMO Test Results Analysis

  • 3.1 64T64R with MU-MIMO Versus 8T8R with Optimal Conditions
    • 3.1.1 Non-Commercial Downlink Test Results
      • 3.1.1.1 64T64R with Beamforming and Massive MIMO Results
    • 3.1.2 Commercial Downlink Test Results
      • 3.1.2.1 64T64R with Beamforming Results
      • 3.1.2.2 8T8R with Beamforming Results
    • 3.1.3 Non-Commercial Uplink Test Results
      • 3.1.3.1 64T64R with Beamforming Results
  • 3.2 64T64R with MU-MIMO Versus 8T8R with Distributed Mobile Devices in the Cell
    • 3.2.1 Non-Commercial Test Results
      • 3.2.1.1 64T64R with Beamforming and Massive MIMO Test Results
      • 3.2.1.2 8T8R with Beamforming Test Results
    • 3.2.2 Commercial Test Results
      • 3.2.2.1 64T64R with Beamforming and Massive MIMO Test Results
      • 3.2.2.2 8T8R with Beamforming Test Results
  • 3.3 One UE Mobile and Seven Stationary UEs
    • 3.3.1 Non-Commercial Test Results
      • 3.3.1.1 64T64R with Beamforming and Massive MIMO Test Results
    • 3.3.2 Commercial Test Results
      • 3.3.2.1 64T64R with Beamforming and Massive MIMO Test Results

4.0 Link Budget Test Results

5.0 Test Methodology

6.0 Final Thoughts

7.0 Appendix

Index of Figures & Tables

  • Figure 1. 64T64R versus 8T8R Downlink Sector Throughput in a 20 MHz Channel - 8 mobile devices with optimal conditions
  • Figure 2. 64T64R versus 8T8R Uplink Sector Throughput in a 20 MHz Channel - 8 mobile devices with optimal conditions
  • Figure 3. 64T64R Versus 8T8R Aggregate Throughput
  • Figure 4. 64T64R Versus 8T8R Aggregate RB Allocations with MIMO Layers
  • Figure 5. 64T64R Mobile Device Locations
  • Figure 6. 64T64R Mobile Device RSRP and SINR
  • Figure 7. 64T64R Mobile Device Modulation Scheme Distribution
  • Figure 8. 64T64R Mobile Device MCS Values
  • Figure 9. 64T64R Mobile Device PHY and MAC Data Rates by UE
  • Figure 10. 64T64R Aggregate Sector Throughput
  • Figure 11. 64T64R RB Allocations by UE
  • Figure 12. 64T64R Device Pairing Results by UE
  • Figure 13. 8-Layer MU-MIMO Utilization Rate
  • Figure 14. 64T64R Versus 8T8R Aggregate Throughput
  • Figure 15. 64T64R Versus 8T8R Aggregate RB Allocations with MIMO Layers
  • Figure 16. 64T64R Mobile Device Locations
  • Figure 17. 64T64R Mobile Device RSRP and SINR
  • Figure 18. 64T64R Mobile Device Modulation Scheme Distribution
  • Figure 19. 64T64R Mobile Device MCS Values
  • Figure 20. 64T64R Mobile Device PHY and MAC Data Rates by UE
  • Figure 21. 64T64R Aggregate Sector Throughput - our eight devices only
  • Figure 22. 64T64R RB Allocations by UE
  • Figure 23. 64T64R Device Pairing Results by UE
  • Figure 24. 8-Layer MU-MIMO Utilization Rate
  • Figure 25. 8T8R Mobile Device Locations
  • Figure 26. 8T8R Mobile Device RSRP and SINR
  • Figure 27. 8T8R Mobile Device Modulation Scheme Distribution
  • Figure 28. 8T8R Mobile Device MCS Values
  • Figure 29. 8T8R Mobile Device PHY and MAC Data Rates by UE
  • Figure 30. 8T8R Aggregate Sector Throughput - our eight devices only
  • Figure 31. 8T8R RB Allocations by UE
  • Figure 32. 8T8R Device Layers by UE
  • Figure 33. 64T64R Versus 8T8R Aggregate Throughput
  • Figure 34. 64T64R Versus 8T8R Aggregate RB Allocation
  • Figure 35. 64T64R Mobile Device Locations
  • Figure 36. 64T64R Mobile Device MCS Values
  • Figure 37. 64T64R Mobile Device PHY and MAC Data Rates by UE
  • Figure 38. 64T64R Aggregate Sector Throughputv
  • Figure 39. 64T64R RB Allocations by UE
  • Figure 40. 8-Layer MU-MIMO Utilization Rate
  • Figure 41. 64T64R Versus 8T8R Aggregate Throughput
  • Figure 42. 64T64R Versus 8T8R Aggregate RB Allocations with MIMO Layers
  • Figure 43. 64T64R Mobile Device Locations
  • Figure 44. 64T64R Mobile Device RSRP and SINR
  • Figure 45. 64T64R Mobile Device Modulation Scheme Distribution
  • Figure 46. 64T64R Mobile Device MCS Values
  • Figure 47. 64T64R Mobile Device PHY and MAC Data Rates by UE
  • Figure 48. 64T64R Aggregate Sector Throughput
  • Figure 49. 64T64R RB Allocations by UE
  • Figure 50. 64T64R Device Pairing Results by UE
  • Figure 51. 8-Layer MU-MIMO Utilization Rate
  • Figure 52. 8T8R Mobile Device Locations
  • Figure 53. 8T8R Mobile Device RSRP and SINR
  • Figure 54. 8T8R Mobile Device Modulation Scheme Distribution
  • Figure 55. 8T8R Mobile Device MCS Values
  • Figure 56. 8T8R Mobile Device PHY and MAC Data Rates by UE
  • Figure 57. 8T8R Aggregate Sector Throughput
  • Figure 58. 8T8R RB Allocations by UE
  • Figure 59. 8T8R Device Layers by UE
  • Figure 60. 64T64R Versus 8T8R Aggregate Throughput
  • Figure 61. 64T64R Versus 8T8R Aggregate RB Allocations with MIMO Layers
  • Figure 62. 64T64R Mobile Device Locations
  • Figure 63. 64T64R Mobile Device RSRP and SINR
  • Figure 64. 64T64R Mobile Device Modulation Scheme Distribution
  • Figure 65. 64T64R Mobile Device MCS Values
  • Figure 66. 64T64R Mobile Device PHY and MAC Data Rates by UE
  • Figure 67. 64T64R Aggregate Sector Throughput - our eight devices only
  • Figure 68. 64T64R RB Allocations by UE
  • Figure 69. 64T64R Device Pairing Results by UE
  • Figure 70. 8-Layer MU-MIMO Utilization Rate
  • Figure 71. 8T8R Mobile Device Locations
  • Figure 72. 8T8R Mobile Device RSRP and SINR
  • Figure 73. 8T8R Mobile Device Modulation Scheme Distribution
  • Figure 74. 8T8R Mobile Device MCS Values
  • Figure 75. 8T8R Mobile Device PHY and MAC Data Rates by UE
  • Figure 76. 8T8R Aggregate Sector Throughput - our 8 devices only
  • Figure 77. 8T8R RB Allocations by UE
  • Figure 78. 8T8R Device Layers by UE
  • Figure 79. 64T64R Mobile Device Locations
  • Figure 80. 64T64R Mobile Device RSRP and SINR
  • Figure 81. 64T64R Mobile Device Modulation Scheme Distribution
  • Figure 82. 64T64R Mobile Device MCS Values
  • Figure 83. 64T64R Mobile Device PHY and MAC Data Rates by UE
  • Figure 84. 64T64R Aggregate Sector Throughput
  • Figure 85. 64T64R RB Allocations by UE
  • Figure 86. 64T64R Device Pairing Results by UE
  • Figure 87. 8-Layer MU-MIMO Utilization Rate
  • Figure 88. UE #5 Pairing Utilization Rate
  • Figure 89. UE Data Speeds Time Series
  • Figure 90. UE Data Speeds Time Series
  • Figure 91. UE RB Allocation Time Series
  • Figure 92. UE RB Allocation Time Series
  • Figure 93. UE Location
  • Figure 94. Impact of UE Proximity
  • Figure 95. 64T64R Mobile Device RSRP and SINR
  • Figure 96. 64T64R Mobile Device Modulation Scheme Distribution
  • Figure 97. 64T64R Mobile Device MCS Values
  • Figure 98. 64T64R Mobile Device PHY and MAC Data Rates by UE
  • Figure 99. 64T64R Aggregate Sector Throughput - our 8 devices only
  • Figure 100. 64T64R RB Allocations by UE
  • Figure 101. 64T64R Device Pairing Results by UE
  • Figure 102. 8-Layer MU-MIMO Utilization Rate
  • Figure 103. UE #5 Pairing Utilization Rate
  • Figure 104. UE #5 Vehicular Speed
  • Figure 105. Link Budget Drive Route
  • Figure 106. Uplink Data Speeds - 8T8R and 64T64R
  • Figure 107. Uplink Data Speeds Versus Downlink RSRP - 8T8R and 64T64R
  • Figure 108. Downlink Data Speeds - 8T8R and 64T64R
  • Figure 109. XCAL-Auto in Action
  • Figure 110. XCAL-Solo in Action
  • Figure 111. 8T8R and 64T64R Cell Site
  • Figure 112. 64T64R Mobile Device Locations
  • Figure 113. 64T64R Mobile Device RSRP and SINR
  • Figure 114. 64T64R Mobile Device Modulation Scheme Distribution
  • Figure 115. 64T64R Mobile Device MCS Values
  • Figure 116. 64T64R Mobile Device PHY and MAC Data Rates by UE
  • Figure 117. 64T64R Aggregate Sector Throughput
  • Figure 118. 64T64R RB Allocations by UE
  • Figure 119. 64T64R Device Pairing Results by UE
  • Figure 120. 8-Layer MU-MIMO Utilization Rate
  • Figure 121. 64T64R Mobile Device Locations
  • Figure 122. 64T64R Mobile Device RSRP and SINR
  • Figure 123. 64T64R Mobile Device Modulation Scheme Distribution
  • Figure 124. 64T64R Mobile Device MCS Values
  • Figure 125. 64T64R Mobile Device PHY and MAC Data Rates by UE
  • Figure 126. 64T64R Aggregate Sector Throughput
  • Figure 127. 64T64R RB Allocations by UE
  • Figure 128. 64T64R Device Pairing Results by UE
  • Figure 129. 8-Layer MU-MIMO Utilization Rate
  • Figure 130. UE Data Speeds Time Series
  • Figure 131. UE RB Allocation Time Series
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