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市場調查報告書

5G:地球上最大的展覽 - 第5冊:奇怪的關係 (紐約市的T-Mobile 5G NR網路的基準調查)

5G: The Greatest Show on Earth - Volume 5, Strange Bedfellows (Benchmark Study of the T-Mobile 5G NR Network in New York City)

出版商 Signals Research Group 商品編碼 907153
出版日期 內容資訊 英文 48 Pages
商品交期: 最快1-2個工作天內
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5G:地球上最大的展覽 - 第5冊:奇怪的關係 (紐約市的T-Mobile 5G NR網路的基準調查) 5G: The Greatest Show on Earth - Volume 5, Strange Bedfellows (Benchmark Study of the T-Mobile 5G NR Network in New York City)
出版日期: 2019年08月19日內容資訊: 英文 48 Pages
簡介

本報告提供紐約市的T-Mobile的5G 實施NR網路的基準調查,與LAA配合使用的協同效應,改善的點,及機會的領域等分析。

第1章 摘要整理

第2章 主要見解

第3章 5G NR 及 LAA的結果與分析

第4章 5G NR的標準

  • 5G NR的標準
  • 靈敏度分析、其他關注事項
  • 熱的問題

第5章 試驗手法

第6章 結論

目錄

SRG conducted a benchmark study of the T-Mobile 5G NR network in New York City where the operator has deployed the technology at 28 GHz (Band n257) along with LAA in Band 46.

Highlights of the Report include the following:

Our Thanks. We did this study in collaboration with Accuver Americas 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 captured chipset diagnostic messages from two Galaxy S10 smartphones. We rotated between phones and tested in parallel with one phone locked to LTE-Only. We focused on pedestrian tests with UDP data transfers to determine network performance and the synergies between 5G NR and LAA.

LAA Synergies. Although concurrent use of 5G NR and LAA isn't possible, the Galaxy S10 can move between the two air interfaces with LAA providing extended coverage where 5G NR isn't present. LAA, based on our analysis, also delivers higher spectral efficiency than 5G NR, albeit with lower data speeds due to the limited channel bandwidth. LAA paves the way for 5G NR-U, which includes support for uplink transmissions and standalone mode of operation (no anchor carrier in licensed spectrum). Thermal RLFs. We addressed this topic in an earlier Signals Flash, but we provide additional insight in this report. Since publishing that report, we had the opportunity to use two other 5G NR smartphones with the Qualcomm modem. Log files that we have analyzed do not show a single thermal RLF. We also note that while the problem is real with the V50 and S10, we believe the magnitude of the problem is overstated since other situations can make it appear like a thermal RLF has occurred.

The Improvements. The biggest improvement since testing 5G NR (FR2) in April is that the T-Mobile/Ericsson network supports EN-DC with dual bearers, meaning simultaneous user plane data traffic over LTE and 5G NR. Uplink traffic remains entirely on 5G NR. Handovers between beam indices and between cell PCIs occur much faster than they did in April when there was a 2 to 5 second handover delay during which time the traffic went over LTE.

Areas of Opportunity. Separate from the thermal RLFs, big improvements in 5G NR performance can come from better mappings of LTE PCIs used for the 5G NR anchor and increased uplink coverage. The former seems relatively straightforward while the latter can get addressed with 5G NR in FR1 and pending R16 features.

Table of Contents

  • 1.0 Executive Summary
  • 2.0 Key Observations
  • 3.0 5G NR and LAA Results and Analysis
  • 4.0 5G NR Metrics
  • 4.1 5G NR Metrics
  • 4.2 Sensitivity Studies and other Interesting Stuff
  • 4.3 Thermal Issues
  • 5.0 Test Methodology
  • 6.0 Final Thoughts

Index of Figures & Tables

  • Figure 1. Geo Plot of Times Square Walk Routes
  • Figure 2. Geo Plot of East Side and Manhattan Walk Routes
  • Figure 3. Median LTE and 5G NR Data Speeds - by component carrier
  • Figure 4. Distribution of LTE and 5G NR Data Speeds - by component carrier
  • Figure 5. Median RB Normalized LTE and 5G NR Data Speeds - by component carrier
  • Figure 6. Distribution of RB Normalized LTE and 5G NR Data Speeds - by component carrier
  • Figure 7. Distribution of LAA and 5G NR Data Speeds
  • Figure 8. LAA Channel Utilization
  • Figure 9. Implied Single User Spectral Effi ciency - 5G NR Versus LAA
  • Figure 10. Median LTE and LAA RSRP
  • Figure 11. Median LTE and LAA SINR
  • Figure 12. 5G NR and LAA
  • Figure 13. LAA PCIs
  • Figure 14. 5G NR, LTE and LAA Data Speeds Time Series Plot
  • Figure 15. 5G NR, LTE and LAA Bandwidth Allocations
  • Figure 16. July 18 AM Route
  • Figure 17. July 18 AM LAA PCIs
  • Figure 18. July 18 AM 5G NR PCIs
  • Figure 19. 5G NR, LTE and LAA Contributions to Total Throughput
  • Figure 20. Median 5G NR, LTE and LAA Data Speeds
  • Figure 21. Band 2, Band 66 and Band 46 (LAA) RSRP Time Series
  • Figure 22. Band 2, Band 66 and Band 46 (LAA) SINR Time Series
  • Figure 23. 5G NR, LTE and LAA Data Speeds Time Series Plot
  • Figure 24. RB Allocations and MCS Values as a Function of BRSRP
  • Figure 25. PDSCH Resource Block Allocations - Primary and Secondary Carriers
  • Figure 26. Distribution of Modulation Schemes - Primary and Secondary Carriers
  • Figure 27. Median MCS Values - Primary and Secondary Carriers
  • Figure 28. Median Throughput - Primary and Secondary Carriers
  • Figure 29. CQI as a Function of BRSRP
  • Figure 30. BRSRP with Landscape Placement
  • Figure 31. BRSRP with Portrait Placement
  • Figure 32. BRSRP and BSNR with Landscape and Portrait Placement
  • Figure 33. 5G NR Cell Site Near Hotel
  • Figure 34. 5G NR Beam Indices Values Geo Plot
  • Figure 35. Google Duo Throughput on 5G NR and LTE - Device #1 and Device #2
  • Figure 36. Median Google Duo Throughput on 5G NR and LTE - Device #1 and Device #2
  • Figure 37. PDSCH and PUSCH Throughput with UDP Data Transfers
  • Figure 38. PDSCH and PUSCH Throughput with UDP Data Transfers
  • Figure 39. PDSCH Throughput, PUSCH Transmit Power and PUCCH Transmit Power as a Function of BRSRP
  • Figure 40. Thermal RLF with 5G NR
  • Figure 41. Thermal RLF with 5G NR
  • Figure 42. Loss of 5G NR Connectivity Concurrent with Change in LTE PCI, I
  • Figure 43. Loss of 5G NR Connectivity Concurrent with Change in LTE PCI, II
  • Figure 44. Umetrix Comparative Results
  • Figure 45. Umetrix Data Architecture
  • Figure 46. XCAL-Solo in Action
  • Figure 47. XCAL-Solo Hardware
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