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Map based routing in large scale urban vehicle networks

Map based routing in large scale urban vehicle networks. agenda. Optimal Routing algorithm. Minimum Delay Algorithm (MDA) Minimum Delay and Hops Algorithm (MDHA) Vehicular to Vehicular, Vehicular to Location, Location to Location. Inefficiency of existing algorithms revealed.

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Map based routing in large scale urban vehicle networks

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  1. Map based routing in large scale urban vehicle networks

  2. agenda

  3. Optimal Routing algorithm • Minimum Delay Algorithm (MDA) • Minimum Delay and Hops Algorithm (MDHA) • Vehicular to Vehicular, Vehicular to Location, Location to Location

  4. Inefficiency of existing algorithms revealed • Geo routing family: • Performance degrades quickly as transmission distance increases • Local maximum is extremely hard to detect • Mobility based routing family • Is the behavior of individual node really RELAIBALY predictable? • Choice of the length of time frame used in statistical pattern mining • Let’s consider the JOINT probability

  5. An example

  6. Properties of optimal routing path • Relative spatial stability • Relative temporal stability • Routing sequence is very dynamic

  7. Map based routing • Switch the respective

  8. Model for a road section • Modeled as a bi-directed link • The weight of a link reflects the average packet travel time over that link

  9. Algorithm Enhancement

  10. Performance • Comm radius 100m, transmission distance 6KM

  11. Factor－comm range

  12. Factor－comm range

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