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Table 1 Simulation parameters

From: A cooperative V2X MAC protocol for vehicular networks

Parameter

Highway

Urban

Road segment length

1 km

430 m

Num. of horizontal segments

–

3

Num. of vertical segments

–

3

Lane width

5 m

5 m

Num. of lanes per direction

4

1

Wireless comm. range

150 m

150 m

Vehicle speed

[60, 90, 110, 120] km/h

[40–60] km/h

Packet size

500 bytes

500 bytes

Data rate

12 Mbps

12 Mbps

TX power

23 dBm

23 dBm

SNR threshold

15 dB

15 dB

Broadcast rate

10 MHz

10 MHz

Slots per frame

100

100

Slot width

1 ms

1 ms

Contention window size

0.2 ms (10 backoff units)

0.2 ms (10 backoff units)

Number of vehicles

50–400

50–650

Number of RSUs

0

0

Simulation time

2 min

2 min