Signals Ahead: VoLTE Benchmark Study Part 6 - EVS and AMR-WB in a commercial LTE network

  • ID: 3799425
  • Report
  • Region: Global
  • 57 Pages
  • Signals Research Group, LLC
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You Can't Ride in my Little Red Wagon...Because it is Possessed by the Powers of EVS

FEATURED COMPANIES

  • Accuver
  • Spirent Communications
  • MORE
In this Signals Ahead report we provide part two of the two-part study of the new EVS voice codec and how it compares with AMR-WB. For this independent study, we purchased four commercial smartphones (LG G5) and used the T-Mobile USA network.

Highlights of the Report include the following:

Our Thanks

This study could not have been done without the support of Accuver Americas and Spirent Communications. Accuver provided its XCAL-M and XCAP drive test solutions, which we used to analyze the Physical Layer information. Spirent provided its Nomad User Experience Analytics System, which we used to analyze the call quality using the industry-accepted POLQA algorithm.

Our Approach

We tested a wide range of codec configurations, using LTE, 3G and VoWi-Fi. We included stationary and mobile testing in challenging environments. We analyzed the impact of the codec configurations on the network (spectral efficiency), analyzed the call quality (MOS), and looked at the power/current requirements. We used the T-Mobile USA network, testing both in California and Minnesota.

Better Voice Quality.

True to its word, EVS can deliver better voice quality than AMR-WB. With more challenging conditions and with a noisier channel (background crowd noise) the delta can become significant. We quantify and substantiate this statement with innumerable test results and figures in the main body of the report.

More Efficient. In most of the tests, EVS was more efficient than AMR-WB with the differences generally even more significant in the uplink direction.

What about Power?

As far as we could determine, there were very little differences in the power/current consumption of the two codecs. To the extent there are differences, which we could not clearly identify, we argue that in the big picture it doesn’t matter.

*SIGNALS AHEAD SUBSCRIPTION INFORMATION

This report is included as part of a subscription to Signals Ahead or it can be purchased separately. Signals Ahead is a research-focused product that is published on a periodic basis. Its clientele include all facets of the wireless ecosystem, including some of the largest mobile operators, the top handset suppliers, the major infrastructure vendors, subsystem suppliers, semiconductor companies and financial institutions, including Wall Street, Private Equity and Venture Capitalists, spread across five continents.
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FEATURED COMPANIES

  • Accuver
  • Spirent Communications
  • MORE
1.0 Executive Summary

2.0 Key Observations

3.0 Stationary to Stationary Testing with Decent to Poor Coverage
3.1 EVS 13.2 paired with EVS 13.2 and AMR-WB paired with AMR-WB from two Different Test Locations with Decent to Poor Coverage
3.2 EVS 9.6 paired with EVS 9.6 and AMR-WB paired with EVS 13.2 from two Different Test Locations with Decent to Poor Coverage
3.3 EVS 13.2 paired with AMR-WB and EVS 13.2 paired with EVS 13.2 from Test Location 1
3.4 EVS and AMR-WB with VoWi-Fi
3.5 EVS and AMR-WB with Background Crowd Noise
3.6 EVS 13.2 and AMR-WB with Background Crowd Noise and VoWi-Fi

4.0 Mobile to Stationary Testing with Decent to Poor Coverage
4.1 EVS 13.2 and AMR-WB with Mobility
4.2 EVS 13.2 and AMR-WB with Background Crowd Noise and Mobility
4.3 EVS 9.6 and AMR-WB with Background Crowd Noise and Mobility
4.4 EVS 9.6 and EVS 13.2 paired with AMR-WB with Mobility

5.0 Current Consumption Analysis

6.0 Test Methodology

7.0 Final Thoughts

8.0 Appendix

List of Figures

Figure 1. EVS 13.2 and AMR-WB Call Quality from Test Location 1
Figure 2. EVS 13.2 and AMR-WB Call Quality from Test Location 2
Figure 3. Downlink Resource Block Requirements - Test 31
Figure 4. Uplink Resource Block Requirements - Test 31
Figure 5. Downlink Resource Block Requirements over Time - Test 31
Figure 6. Uplink Resource Block Requirements over Time - Test 31
Figure 7. Call Quality Results - Test 25
Figure 8. Downlink Resource Block Requirements - Test 25
Figure 9. Uplink Resource Block Requirements - Test 25
Figure 10. Downlink TTI Requirements - Test 25
Figure 11. Uplink TTI Requirements - Test 25
Figure 12. EVS 9.6 and AMR-WB Call Quality from Test Location 1 - Test 35
Figure 13. EVS 9.6 and AMR-WB Call Quality from Test Location 2 - Test 35
Figure 14. Downlink Resource Block Requirements - Test 35
Figure 15. Uplink Resource Block Requirements - Test 35
Figure 16. EVS 13.2 and AMR-WB Call Quality from Test Location 1 - Test 44
Figure 17. EVS 13.2 and EVS 13.2 Call Quality from Test Location 1 - Test 45
Figure 18. Downlink Resource Block Requirements - Test 44 and Test 45
Figure 19. Uplink Resource Block Requirements - Test 44 and Test 45
Figure 20. EVS and AMR-WB Call Quality from Test Location 1 - Test 18 through Test 21
Figure 21. Downlink Resource Block Requirements - Test 18 through Test 21
Figure 22. Uplink Resource Block Requirements - Test 18 through Test 21
Figure 23. Uplink Resource Block over Time
Figure 24. EVS 13.2 and AMR-WB Call Quality with Background Crowd Noise from Test Location 1 - Test 46
Figure 25. EVS 13.2 and AMR-WB Call Quality with Background Crowd Noise from Test Location 2 - Test 46
Figure 26. EVS 13.2 and AMR-WB Call Quality with Background Crowd Noise from Test Location 1 - Test 62
Figure 27. EVS 13.2 and AMR-WB Call Quality with Background Crowd Noise from Test Location 2 - Test 62
Figure 28. EVS 9.6 and AMR-WB Call Quality with Background Crowd Noise from Test Location 1 - Test 66
Figure 29. EVS 13.2 and AMR-WB Call Quality with Background Crowd Noise from Test Location 2 - Test 66
Figure 30. EVS 13.2 and AMR-WB Call Quality with Background Crowd Noise from Test Location 1 - Test 64
Figure 31. EVS 13.2 and AMR-WB Call Quality with Background Crowd Noise from Test Location 2 - Test 64
Figure 32. Summary of End-to-End Call Quality Results with Mobility and Background Crowd Noise
Figure 33. EVS 13.2 and AMR-WB with Mobility from Test Location 1 - Test 70
Figure 34. EVS 13.2 and AMR-WB with Mobility from Test Location 2 - Test 70
Figure 35. Downlink Resource Block Requirements - Test 70
Figure 36. Uplink Resource Block Requirements - Test 70
Figure 37. EVS 13.2 and AMR-WB Call Quality with Background Crowd Noise and Mobility from Test Location 1 - Test 41
Figure 38. EVS 13.2 and AMR-WB Call Quality with Mobility from Test Location 2 - Test 41
Figure 39. EVS 13.2 and AMR-WB Call Quality with Background Crowd Noise and Mobility from Test Location 1 - Test 41
Figure 40. EVS 13.2 and AMR-WB Call Quality with Mobility and Background Crowd Noise from Test Location 1 - Test 69
Figure 41. EVS 13.2 and AMR-WB Call Quality with Mobility and Background Crowd Noise from Test Location 2 - Test 69
Figure 42. Geo Plot of Call Quality for Device 1 from CA (EVS-13.2) Mapped to Location Device 1 from MN - Test 69
Figure 43. Geo Plot of Call Quality for Device 1 from MN (EVS-13.2) - Test 69
Figure 44. Geo Plot of Call Quality for Device 2 from CA (AMR-WB) Mapped Location of Device 2 from MN - Test 69
Figure 45. Geo Plot of Call Quality for Device 2 from MN (AMR-WB) - Test 69
Figure 46. Geo Plot of Call Quality and Frequency Band for Device 1 from CA (EVS 13.2) - Test 69
Figure 47. Geo Plot of RSRP for Device 1 from MN - Test 69
Figure 48. EVS 9.6 and AMR-WB Call Quality with Mobility and Background Crowd Noise from Test Location 1 - Test 67 and Test 68
Figure 49. EVS 9.6 and AMR-WB Call Quality with Mobility and Background Crowd Noise from Test Location 2 - Test 67 and Test 68
Figure 50. Geo Plot of Call Quality for Device 1 from CA (EVS 9.6) Mapped to Location of Device 1 from MN - Test 67 and Test 68
Figure 51. Geo Plot of Call Quality for Device 1 from MN (EVS 9.6) - Test 67 and Test 68
Figure 52. Geo Plot of Call Quality for Device 2 from CA (AMR-WB) Mapped to Location of Device 2 from MN - Test 67 and Test 68
Figure 53. Geo Plot of Call Quality for Device 2 from MN (AMR-WB) - Test 67 and Test 68
Figure 54. EVS 9.6 and EVS 13.2 to AMR-WB Call Quality with Mobility from Test Location 1 - Test 71
Figure 55. EVS 9.6 and EVS 13.2 to AMR-WB Call Quality with Mobility from Test Location 2 - Test 71
Figure 56. Current Consumption
Figure 57. Current Consumption versus Time
Figure 58. Nomad Screen Shot
Figure 58. Nomad Screen Shot
Figure 60. Test Locations
Figure 61. Downlink TTI Requirements - Test 31
Figure 62. Uplink TTI Requirements - Test 31
Figure 63. EVS 13.2 and AMR-WB Call Quality from Test Location 1 with Mobility - Test 38
Figure 64. EVS 13.2 and AMR-WB Call Quality from Test Location 2 with Mobility - Test 38
Figure 65. Downlink Resource Block Requirements - Test 41
Figure 66. Uplink Resource Block Requirements - Test 41
Figure 67. Resource Block Requirements over Time - Test 41
Figure 68. Downlink Resource Block Requirements - Test 69
Figure 69. Uplink Resource Block Requirements - Test 69
Figure 71. Geo Plot of Call Quality for Device 1 from MN (EVS 9.6) - Test 71
Figure 72. Geo Plot of Call Quality for Device 2 from CA (AMR-WB) Mapped to Location of Device 2 from MN - Test 71
Figure 73. Geo Plot of Call Quality for Device 2 from MN (EVS 13.2) - Test 71
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