1. Coexistence in the TV White Spaces
April 2009
doc.: IEEE yy/xxxxr0
April 2009
Coexistence in the TV White Spaces
Date:
Authors:
Rich Kennedy, Research In Motion
Rich Kennedy, Research In Motion

2. April 2009
doc.: IEEE yy/xxxxr0
April 2009
Abstract
This presentation is to explore a different approach to the TVWS coexistence issue, and a possible way to complete the task with useful deliverables in a reasonable amount of time.
Rich Kennedy, Research In Motion
Rich Kennedy, Research In Motion

3. The Problem is the Realities
April 2009
The Problem is the Realities
Any wireless technology that can use the TVWS will
802.11/15/16/22 and nn
Other TVBDs
Wireless microphones
Nothing we do here will change that
We cannot with any certainty predict what use cases will arise, which ones will fail and which will dominate
e.g. High power base stations will impact indoor use cases
Future technological developments will emerge
We cannot predict the future in an unlicensed band without more restrictive regulations
We should work with what we do know
The regulatory restrictions
The medium access methods of the known technologies and how well they work together with other 802 technologies and handle interference from non-802 devices
Rich Kennedy, Research In Motion

4. April 2009
So What Should We Do?
Focus on the impact the various technologies have on each other, regardless of use case
Make predictions on how well each will do in the presence of the others
Make recommendations on minimizing the impact
Bring the findings to the EC so they can recommend to each of the affected WGs
Worst case scenarios to avoid
Mechanisms that might improve the efficacy of their technology in this unlicensed band
If it looks like it will be an IEEE 802 “food fight”, recommendations on the best way to enable the best social and commercial use of the band
Rich Kennedy, Research In Motion