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5G:地球上で最大のショー(第13巻)干し草の山の中の針(T-Mobileバンドn71 5G NRスタンドアロン[SA]ネットワークに焦点を当てた5Gベンチマーク調査)

5G: The Greatest Show on Earth - Volume 13, Needle in a Haystack (5G Benchmark Study, with a Focus on the T-Mobile Band n71 5G NR Standalone [SA] Network)

出版日: | 発行: Signals Research Group | ページ情報: 英文 54 Pages | 納期: 即日から翌営業日

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5G:地球上で最大のショー(第13巻)干し草の山の中の針(T-Mobileバンドn71 5G NRスタンドアロン[SA]ネットワークに焦点を当てた5Gベンチマーク調査)
出版日: 2020年10月07日
発行: Signals Research Group
ページ情報: 英文 54 Pages
納期: 即日から翌営業日
  • 全表示
  • 概要
  • 目次
概要

当レポートは、5G:地球上で最大のショーの第13巻であり、今回は、T-Mobile Band n71 5G NRスタンドアロン(SA)ネットワークと、オペレーターの5G NR非スタンドアロン(NSA)ネットワークとの比較に焦点を当てています。ダラス地域だけでなく、ミネソタ州とウィスコンシン州の農村地域でもテストを実施しています。

目次

第1章 エグゼクティブサマリー

第2章 重要な所見

第3章 レイテンシー関連のメトリック

第4章 5G NRSAのカバレッジと実績

  • ウィスコンシン
  • ミネソタ

第5章 テスト調査手法

第6章 結論

第7章 付録

図と表の索引

目次

SRG just completed its thirteenth 5G benchmark study, this time with a focus on the T-Mobile Band n71 5G NR Standalone (SA) network and how it compares with the operator's 5G NR Non-Standalone (NSA) network. We tested in the Dallas area, as well as rural areas in Minnesota and Wisconsin.

Highlights of the Report include the following:

  • Our Thanks. We did this study in collaboration with Accuver Americas, Rohde & Schwarz, and Spirent Communications who provided us with their respective test equipment and platforms, which we identify in the report. SRG did all the testing and analysis of the data and we are solely responsible for the commentary in the report.
  • Our Methodology. We did most of our testing with two smartphones operating in parallel. One smartphone (S20 Ultra) supported SA and the other smartphone (McLaren OnePlus or Note 10 Plus) only supported NSA. In some tests we forced the S20 Ultra to remain in SA mode even though NSA was available. We logged chipset diagnostic messages and captured scanner data to independently determine LTE and 5G NR RF characteristics.
  • Improved Coverage and Performance. Although it wasn't easy to find locations where the smartphone used [needed] SA, in those regions, we observed 5G NR coverage which didn't exist with the NSA-capable smartphone. We also documented meaningful increases in end user data speeds, even in cases when the NSA smartphone was using both LTE and 5G NR.
  • Latency Results were Mixed. We measured handover times, acquisition times, RTT and web page load times. The results were mixed, at best.
  • Related Challenges. PDCP packet losses, especially with poor LTE coverage remain a big problem that isn't specific to any operator or vendor. Furthermore, we continue to observe smartphones camping on a low-band LTE frequency (i.e., Band 12) instead of leveraging 5G NR in another low-band frequency. We are very familiar with the airplane mode feature which can trigger a different response and the desired outcome.
  • Sidebar Study. Because we could, we drove across much of Wisconsin while testing the top three operator networks. AT&T had the fastest network (by far) while the T-Mobile network had the greatest use of 5G NR. We also captured scanner data to look at operator low-/mid-band LTE coverage and 5G NR coverage.

Table of Contents

1.0 Executive Summary

2.0 Key Observations

3.0 Latency-Related Metrics

4.0 5G NR SA Coverage and Performance

  • 4.1. Wisconsin
  • 4.2. Minnesota

5.0 Test Methodology

6.0 Final Thoughts

7.0 Appendix

Index of Figures & Tables

  • Figure 1. Average LTE and 5G NR Throughput - by operator
  • Figure 2. Distribution of Total Throughput - by operator
  • Figure 3. Distribution of Aggregate LTE Channel Bandwidth - by operator
  • Figure 4. Utilization of LTE Carrier Aggregation Schemes and 5G NR - by operator
  • Figure 5. Latency Round Trip Time (RTT) Results by operator
  • Figure 6. Latency Round Trip Time (RTT) Results by operator
  • Figure 7. Web Page Load Time Results - SA versus NSA by operator
  • Figure 8. Web Page Application Layer Throughput - SA versus NSA
  • Figure 9. Web Page Physical Layer Throughput - NSA
  • Figure 10. Handover Times - 5G NR SA versus 5G NR NSA by operator
  • Figure 11. 5G NR SA Handover Signaling
  • Figure 12. NSA 5G NR PCI Only Handover Signaling
  • Figure 13. NSA 5G NR and LTE PCI Handover Signaling
  • Figure 14. NSA LTE PCI Handover Signaling
  • Figure 15. RRC Connection Times - 5G NR SA versus 5G NR NSA
  • Figure 16. 5G NR NSA Connection Signaling
  • Figure 17. 5G NR SA Connection Signaling
  • Figure 18. T-Mobile Technology Coverage Map
  • Figure 19. T-Mobile Technology Utilization
  • Figure 20. Distribution of T-Mobile Mid-Band LTE RSRP
  • Figure 21. Distribution of T-Mobile Mid-Band LTE SINR
  • Figure 22. Distribution of T-Mobile Low-Band LTE RSRP
  • Figure 23. Distribution of T-Mobile Low-Band LTE SINR
  • Figure 24. Distribution of T-Mobile LTE Primary Carrier - by frequency
  • Figure 25. 5G NR SA versus 5G NR NSA Throughput - Transition 1
  • Figure 26. SA versus NSA RSRP - Transition 1
  • Figure 27. LTE Only to SA Transition - Transition 1
  • Figure 28. PCI 601 5G NR NSA to 5G NR SA and back to 5G NR NSA
  • Figure 29. LTE Only to 5G NR SA Transition - Transition 2
  • Figure 30. USCC LTE to T-Mobile SA Transition
  • Figure 31. USCC LTE to T-Mobile LTE Transition
  • Figure 32. T-Mobile Low-Band LTE Coverage along Drive Route
  • Figure 33. SA PCIs and RSRP - MN
  • Figure 34. NSA PCIs, LTE PCIs and LTE RSRP - MN
  • Figure 35. S20 and McLaren OnePlus Throughput and Mid-band LTE RSRP
  • Figure 36. McLaren OnePlus Throughput and Mid-band LTE RSRP
  • Figure 37. McLaren OnePlus Low-band and Mid-Band LTE RSRP
  • Figure 38. S20 and McLaren Throughput and Mid-band LTE RSRP
  • Figure 39. S20 and McLaren Throughput and Mid-band LTE RSRP
  • Figure 40. SA Extended Coverage - Outbound Trip
  • Figure 41. NSA and SA Utilization, including Mid-Band LTE Coverage - Return Trip
  • Figure 42. SA versus NSA Throughput - Area 1
  • Figure 43. T-Mobile Cell Site Home on the Range
  • Figure 44. SA versus NSA Throughput - Area 2
  • Figure 45. SA versus NSA Throughput - Area 2
  • Figure 46. XCAL-M in Action
  • Figure 47. TSME6 Scanner
  • Figure 48. XCAL-M with TSME6 Scanner Information
  • Figure 49. Umetrix Data Architecture
  • Figure 50. Distribution of T-Mobile Primary Band LTE RSRP
  • Figure 51. Distribution of T-Mobile Primary Band LTE SINR
  • Figure 52. T-Mobile Low-Band LTE Coverage - Wisconsin Drive Route
  • Figure 53. T-Mobile Mid-Band FDD LTE Coverage - Wisconsin Drive Route
  • Figure 54. T-Mobile Mid-Band TDD LTE Coverage I - Wisconsin Drive Route
  • Figure 55. T-Mobile Mid-Band TDD LTE Coverage II - Wisconsin Drive Route
  • Figure 56. Band n71 5G Coverage - Wisconsin Drive Route
  • Figure 57. Band n5 5G Coverage - Wisconsin Drive Route
  • Figure 58. T-Mobile Band n41 5G Coverage - Wisconsin Drive Route
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