1. Sub 1 GHz and TVWS commonality
March 2010
doc.: IEEE /0306r0
March 2010
Sub 1 GHz and TVWS commonality
Date:
Authors:
David Halasz, Aclara
Dave Halasz, Aclara

2. March 2010
doc.: IEEE /0306r0
March 2010
Abstract
Propose PHY and band usage for commonality between TVWS and Sub 1 GHz license-exempt
David Halasz, Aclara
Dave Halasz, Aclara

3. March 2010
Sub 1 GHz
Equipment ships today that down converts IEEE to operate in the 902 – 928 ISM band
Standardize this operation
Extend for other bands world wide
Add sub 5 MHz channel widths to,
Increase number of channels available within a given band
Increase bands available world wide
Increase distance
David Halasz, Aclara

4. TVWS frequencies from FCC 08-260
March 2010
TVWS frequencies from FCC
Channel 37
Fixed - fixed TVBD only
Not limited to fixd-fixd TVBD
David Halasz, Aclara

5. What is the widest current PHY band can support?
March 2010
What is the widest current PHY band can support?
TVWS
40 MHz high throughput in US
Sub 1 GHz license-exempt
20 MHz in the US
David Halasz, Aclara

6. How small of a channel do we want?
March 2010
How small of a channel do we want?
TVWS
TV channel is 6 MHz
Concern with out-of-band emissions mask in FCC
Sub 1 GHz license-exempt
Smaller bandwidth channels increases range
Smaller bandwidth channels increases number of channels
David Halasz, Aclara

7. March 2010
Suggestion
OFDM can be used with both TVWS and Sub 1 GHz license-exempt. Sub 1 GHz to be a subset of TVWS.
PHY & Bandwidth
TVWS
Sub 1 GHz
license-exempt
Larger than 40 MHz
Maybe? No
40 MHz OFDM MIMO
Yes
20 MHz OFDM MIMO
20 MHz OFDM
10 MHz OFDM
5 MHz OFDM
Sub 5 MHz OFDM
Channel bonding not pertinent in Sub 1 GHz license-exempt.
David Halasz, Aclara

8. March 2010
References
FCC R&O
David Halasz, Aclara