1. Submission doc.: IEEE 11-14/0586r0 May 2014 Igal Kotzer, General MotorsSlide 1 Automotive Considerations for the Simulation Scenarios Date: 12-May-2014 Authors:

2. Submission doc.: IEEE 11-14/0586r0 May 2014 Igal Kotzer, General MotorsSlide 2 Abstract Two automotive related scenarios are presented To allow support of these scenarios in 802.11ax simulation scenarios, an extension to simulation scenario 3 is proposed

3. Submission doc.: IEEE 11-14/0586r0 May 2014 Igal Kotzer, General MotorsSlide 3 Introduction Wireless LAN is becoming an industry de-facto standard in the automotive world The number of vehicle brands and models equipped with WLAN is constantly increasing The leading usage for high speed WLAN in the automotive world is for infotainment Vehicles equipped with high speed WLAN include an in cabin AP

4. Submission doc.: IEEE 11-14/0586r0 May 2014 Igal Kotzer, General MotorsSlide 4 Scenario 1: Traffic Jam Introduction Traffic jams are often encountered during rush hours Idle periods of time while driving in the traffic jam can be used to consume large quantities of data (e.g. video on demand) A high speed data link should be available in this scenario

5. Submission doc.: IEEE 11-14/0586r0 May 2014 Igal Kotzer, General MotorsSlide 5 Scenario 1: Traffic Jam Characteristics Average lane width of a medium to high speed road is 3m-4m The number of lanes ranges between 2 and 6 A typical length of popular full size / mid size vehicles is 3m-4m A typical width of popular full size / mid size vehicles is 1.8m-2.2m A typical distance between two vehicles in a traffic jam is 1m both to the front and to the side

6. Submission doc.: IEEE 11-14/0586r0 May 2014 Igal Kotzer, General MotorsSlide 6 Scenario 1: Traffic Jam Characteristics (2) Vehicle WLAN is unmanaged In the 2.4GHz band only 3 channels are used (1, 6, 11) In cabin WLAN antennas are placed at a position that allows maximum coverage and rate In cabin WLAN transmits at full power (17dBm) Relative speed between adjacent vehicles in a traffic jam is usually low While both the AP and the STA are stationary relative to each other, the OBSS interference is changing over time due to vehicle movement

7. Submission doc.: IEEE 11-14/0586r0 May 2014 Igal Kotzer, General MotorsSlide 7 Scenario 1: Traffic Jam Channel and Distance Illustration 6 6 1 11 1 6 1 6 6 1 1 6m 4m

8. Submission doc.: IEEE 11-14/0586r0 May 2014 Igal Kotzer, General MotorsSlide 8 Scenario 1: Traffic Jam Channel Model Glass penetration loss: ≤ 2dB Channel model between vehicles: short distance outdoor (low speed mobile) or indoor Channel model inside the vehicle: indoor (see [2], [3])

9. Submission doc.: IEEE 11-14/0586r0 May 2014 Igal Kotzer, General MotorsSlide 9 Scenario 2: Driving in a Dense Vehicle Environment Introduction AP and STA are stationary inside the vehicle Vehicle is moving Other vehicles in the surrounding are also moving Energy is radiated from inside the vehicle to neighbouring vehicles and is reflected back to the receiver from the metal surface of the neighbouring vehicles

10. Submission doc.: IEEE 11-14/0586r0 May 2014 Igal Kotzer, General MotorsSlide 10 Proposed Changes to the Simulation Scenario Both of the presented automotive scenarios have similar simulation characteristics Simulation scenario 3 Allow unmanaged operation as well as managed operation

11. Submission doc.: IEEE 11-14/0586r0 March 2014 Igal Kotzer, General MotorsSlide 11 References [1] Simulation Scenarios, IEEE 11-13/1001r9 [2] Intra-Vehicular Channel Model, IEEE 11-14/0088r0 [3] Extended Intra-Vehicle Channel Model, IEEE 11-14/0365