e-Band improtance & Key to the 5G Revolution

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Consumers today demand ever faster wireless. Although wireless engineers have multiple tricks up their sleeves to meet this demand, they can achieve  only so much. To deliver the gigs customers crave, more spectrum is required

V band (60 GHz) and E band (70/80 GHz) are open to all , with abundant spectrum available to deliver on the promises of 5G.

Good news for india is that probably with 5G spctrum allocation E-Band will be alloted to 5G spectrum buyers along with 3.5GHz or 26GHz spectrum for backhaul of 5G Radios 

The 60 GHz V band, which is unlicensed, has 14 GHz of contiguous spectrum (57 GHz to 71 GHz). The 70/80 GHz paired E band adds another 10 GHz of spectrum for a total of 24 GHz. These V and E bands are open to everyone, and equipment for them is available today from a rich ecosystem of suppliers.

Below are some statistic from IMT-2020 

During past 10 years microwave BH evolution describe below points 

1. MW capacity needs for Mobile  Operators increased x 15 for delivering  increased peak speeds

2. MW Spectrum in the 6 – 42 GHz is not  always enough for delivering today LTE  peaks; that’s why offload to E-Band  spectrum is taking place

3. Most of the links in bands below 23 GHz[>70%]

4. >5Mn MW links world wide

5. Significant regional differences deriving from  rain intensity statistics

   5.1 Europe mostly on 26 and 38 GHz after 15, 18  and 23 severely crowded

   5.2 Far East and Latin America mostly on 7/8, 15,  18 and 23 GHz

   5.3 India mostly on 15GHz

6. E-Band growing fast

7. Huge potential in tropical countries  (i.e. India,..) in still untapped bands  above 23 GHz and E-band

Evolution of the Backhaul Requires an Evolution of Rules too

During the past 10 years

  MW capacity needs for Mobile Operators increased x 15 for delivering increased peak speeds

  MW Spectrum in the 6 – 42 GHz is not always enough for delivering today LTE peaks; that’s why offload to E-Band  spectrum is taking   place

Looking to next 10 years

  LTE / LTE-A and 5G backhaul needs can are supported by

  Using the ample available E-Band spectrum

  Making available wider channels in MW spectrum below 42 GHz

  E-band spectrum fees shall take into account Mobile Operators needs (1-10 Gbps) in terms of peak speeds

  Licensing schemes should incentivize spectrum efficiency from geographical  perspective

Below are some performance test results for e-Band in india in Dense Urban clutter 


RSL Variation hourly to see environmental world noise impact on e-Band 

Key Point- 5dBm variation need to consider for busy hours


Throughput Corelations in e-Band is very intresting and following a linear equation 


 

Key Point 

Peak e-Band Throughput[Mbps]= 16.47 * Peak Utilization of e-Band + 0.99 






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