Rethink NLOS
for small cell
backhaul
October 2013
Yesterday, performance was
about handling more data

Today, performance is
about serving more needs

everywhere
Broadband ...
Challenges
› Site acquisition - Site
locations in new and more
public areas
xGW

› Simplified roll-out,
operation and
main...
Rethink NLOS

Myth

Truth

“Only sub 6 GHz works for NLOS”

“Any frequency works for NLOS”

“OFDM is needed for NLOS”

“An...
Trials at a glance

Completed trial
Ongoing

Broadband World Forum 2013 | © Ericsson AB 2013 | 2013-10-22 | Page 5
Sweden trial Comparison

› 5.8 GHz (unlicensed band) show impact of interference and multipath
› 28 GHz show superior perf...
US trial - Diffraction

Length: 1.3 km

Solution: diffraction on the edge
of the billboard

Heavy Rain

Broadband World Fo...
Europe triAl - reflection
› Reflection
› Length: 400 m
› Measured Throughput: 200 Mb/s

Broadband World Forum 2013 | © Eri...
recommendation

› LOS 6-42 GHz
› LOS 70-80 GHz

› LOS 70-80 GHz
› LOS or NLOS 60 GHz
› LOS or NLOS 23-42 GHz

Broadband Wo...
Conclusions
› NLOS myth is crushed
› Area/block allocated - or
license exempt bands
needed
› Network performance is
key
J....
Rethink NLOS for small cell backhaul
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Rethink NLOS for small cell backhaul

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Rethink NLOS for small cell backhaul

  1. 1. Rethink NLOS for small cell backhaul October 2013
  2. 2. Yesterday, performance was about handling more data Today, performance is about serving more needs everywhere Broadband World Forum 2013 | © Ericsson AB 2013 | 2013-10-22 | Page 2
  3. 3. Challenges › Site acquisition - Site locations in new and more public areas xGW › Simplified roll-out, operation and maintenance › Different site characteristics Broadband World Forum 2013 | © Ericsson AB 2013 | 2013-10-22 | Page 3 MME xxC
  4. 4. Rethink NLOS Myth Truth “Only sub 6 GHz works for NLOS” “Any frequency works for NLOS” “OFDM is needed for NLOS” “Any modulation works for NLOS” “Wide beam antenna is needed” “Narrow beam antenna enhances performance in NLOS” Broadband World Forum 2013 | © Ericsson AB 2013 | 2013-10-22 | Page 4
  5. 5. Trials at a glance Completed trial Ongoing Broadband World Forum 2013 | © Ericsson AB 2013 | 2013-10-22 | Page 5
  6. 6. Sweden trial Comparison › 5.8 GHz (unlicensed band) show impact of interference and multipath › 28 GHz show superior performance due to highly directivity antennas, spectral efficiency and wide bandwidth Broadband World Forum 2013 | © Ericsson AB 2013 | 2013-10-22 | Page 6
  7. 7. US trial - Diffraction Length: 1.3 km Solution: diffraction on the edge of the billboard Heavy Rain Broadband World Forum 2013 | © Ericsson AB 2013 | 2013-10-22 | Page 7
  8. 8. Europe triAl - reflection › Reflection › Length: 400 m › Measured Throughput: 200 Mb/s Broadband World Forum 2013 | © Ericsson AB 2013 | 2013-10-22 | Page 8
  9. 9. recommendation › LOS 6-42 GHz › LOS 70-80 GHz › LOS 70-80 GHz › LOS or NLOS 60 GHz › LOS or NLOS 23-42 GHz Broadband World Forum 2013 | © Ericsson AB 2013 | 2013-10-22 | Page 9 › LOS or NLOS 60 GHz › LOS or NLOS Sub 6 GHz band Depending on performance vs cost
  10. 10. Conclusions › NLOS myth is crushed › Area/block allocated - or license exempt bands needed › Network performance is key J. Hansryd, J. Edstam, B-E. Olsson, C. Larsson, “Non-line-of-sight microwave backhaul for small cells”, Ericsson Review, February 22nd, 2013 (link) Broadband World Forum 2013 | © Ericsson AB 2013 | 2013-10-22 | Page 10

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