SDDV: scalable data dissemination in vehicular ad hoc networks

EURASIP Journal on Wireless Communications and Networking

Table 1 Summary of baseline VANET solution and the corresponding optimized techniques and parameters

SDDV level	OSI layer	Baseline technique	Baseline parameters	SDDV technique	Final SDDV parameters
1	Network	Simple flooding		Opportunistic forwarding	S_max=75, T_max=75 ms, a=2
2	Network	Simple flooding		Irresponsible forwarding	Density based, a=25
3	MAC	Fixed transmission power	33 dBm	Fixed transmission power	33 dBm
4	MAC	Fixed transmission rate	6 Mbps (QPSK $\frac{1}{2})$	Fixed transmission rate	12 Mbps (16 QAM $\frac{1}{2})$
5	MAC	Fixed QoS class usage	C A M=V O, D E N M=V O	Fixed QoS class usage	CAM=VO, DENM=VO
6	Applic.	Fixed beacon interval	CAM = 100 ms, DENM = 100 ms	Adaptive beaconing	$CAM = \frac{130 km / h}{vehiclespeed} \times$ 100 ms, DENM = 100 ms
7	PHY	Standard channel estimation		Decision feedback and smoothing	Single antenna, decision feedback, and smoothing over all carriers
8	PHY	Standard packet capture		Preamble and data switching

Summary of baseline VANET solution derived from the current state of the art, and the corresponding optimized techniques and parameters included in SDDV.