A traffic flow-oriented routing protocol for VANETs

EURASIP Journal on Wireless Communications and Networking

Table 1 VANET routing protocols

Routing protocols	Directional	Traffic-aware	Scenario	Traffic data required	Carry and forward	Centralized/distributed	Environment	Topology-based/position-based routing	Forwarding strategy	Routing table based on one- hop neighbor information
1. GPSR [14]	N	N	Highway	No	N	Distributed	Dense	Position	Greedy	Y
1. GPSR [14]	N	N	Highway	No	N	Distributed	Dense	Position	Forwarding	Y
2. GSR [4]	N	N	City	No	N	Distributed	Sparse	Position	Greedy	Y
2. GSR [4]	N	N	City	No	N	Distributed	Sparse	Position	Forwarding	Y
3. GPCR [8]	N	N	City	No	N	Distributed	Sparse	Position	Restricted	Y
									Greedy
									Forwarding
4. A-STAR [22]	N	Y	City	No	Y	Distributed	Sparse	Position	Greedy	Y
4. A-STAR [22]	N	Y	City	No	Y	Distributed	Sparse	Position	Forwarding	Y
5. GyTAR [25]	N	Y	City	Yes	Y	Distributed	Both	Position	Improve	Y
									Greedy
									Forwarding
6. DGR [24]	Y	N	Highway	No	Y	Distributed	Both	Position	Greedy	Y
6. DGR [24]	Y	N	Highway	No	Y	Distributed	Both	Position	Forwarding	Y
7. PDGR [10]	Y	N	Highway	No	Y	Distributed	Both	Position	Greedy	Y
7. PDGR [10]	Y	N	Highway	No	Y	Distributed	Both	Position	Forwarding	Y
8. RDGR [10]	Y	N	Highway	No	Y	Distributed	Both	Position	Greedy	Y
8. RDGR [10]	Y	N	Highway	No	Y	Distributed	Both	Position	Forwarding	Y
9. PDVR [23]	Y	N	Highway	No	Y	Distributed	Sparse	Position	Directional	Y
9. PDVR [23]	Y	N	Highway	No	Y	Distributed	Sparse	Position	Forwarding	Y
10. E-GyTAR [26]	Y	Y	City	Yes	Y	Distributed	Both	Position	Improve	Y
									Greedy
									Forwarding