TO-GO: TOpology -assist Geo-Opportunistic Routing in Urban Vehicular Grids. Kevin Lee, Uichin Lee, Mario Gerla WONS 2009 2/2/2009. Possible Routing Solutions in VANET. Proactive (table-driven) DSDV OLSR Reactive (on-demand) AODV DSR Geographic GPSR, GPCR, GOAFR+….
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TO-GO: TOpology-assist Geo-Opportunistic Routing in Urban Vehicular Grids
Kevin Lee, Uichin Lee, Mario Gerla
=> Not too scalable
=> Scalable, yet robust to route breaks, but…
Low signal. Packet drop!
Kim et al. Geographic routing made practical. NSDI 2005
Total Hops: 12 (+25%)
Total Hops: 16
DB > AD => S to J
DB < AD => S to B
Forward directly to A
If B exists, forward to J instead
2nd best candidate
Finding such a set is NP-hard!
From remaining, C picks its neighbor M that has most neighbors; add to the set if the rest of neighbors in C are neighbors with M
Pick C’s neighbors that can hear C & the target node
δ is the minimum time interval for suppression, for all nodes Ni in FS