1. April 2009
doc.: IEEE /xxxxr0
February 2014
IEEE Regulatory SC DSRC Coexistence Tiger Team Use cases for DSRC coexistence analysis and modeling
Date:
Authors:
Jim Lansford, CSR Technology
Rich Kennedy, Research In Motion

2. April 2009
doc.: IEEE /xxxxr0
February 2014
Abstract
Use cases for analysis and simulation of proposed coexistence techniques for sharing of 5.9GHz DSRC band by unlicensed (802.11) devices.
Jim Lansford, CSR Technology
Rich Kennedy, Research In Motion

3. Agenda Objectives for simulations Use cases February 2014
Contributions to add to this model are welcomed!
Jim Lansford, CSR Technology

4. Objectives Two proposals so far:
February 2014
Objectives
Two proposals so far:
CCA-based detection and avoidance of DSRC
Repacking of DSRC band
CCA-based proposal is true band sharing (co-channel), so use cases are needed for simulation and testing
Need agreement on parameters for simulation
Path loss models
Repacking the DSRC band puts an adjacent channel to DSRC – ACI is the primary issue
Jim Lansford, CSR Technology

5. Use case (1/?) PTX-WLAN PLOSS-NLOS (Cars) PLOSS-LOS (SBUX) VCar1 VCar2
February 2014
Use case (1/?)
PTX-WLAN
PTX-DSRC
CCAWLAN
CCADSRC
SensWLAN
SensDSRC
PLOSS-NLOS (Cars)
PLOSS-LOS (SBUX)
VCar1
VCar2
Two cars converge on an intersection on a collision course, both of which are equipped with DSRC. The hotspot at the Starbucks on the corner is using WLAN in the 5.9GHz band. The propagation between cars is NLOS, but between the cars and the Starbucks is LOS. For the proposed algorithm, how much will the driver’s reaction times be reduced before the hotspot drops off the band?
Jim Lansford, CSR Technology

6. Future work More details for simulation parameters
February 2014
Future work
More details for simulation parameters
Ranges of values
Path loss model
Additional use cases
Jim Lansford, CSR Technology