Project Details
Abstract
Vehicular ad hoc networks (VANETs) are expected to be used in many aspects ranging from road safety
applications to commerce promotion and interactive services. Although data forwarding has been extensively
addressed, some unique characteristics of VANETs offer new research interests. In the first year, the project
presents a data forwarding scheme with dynamic multicast routing tree, which focuses on road networks with
a static hotspot. The hotspot will broadcast messages to build a routing-tree to provide data delivery routes
for vehicles if it receives more than a certain number of inquiries during a period of time. The certain number
is calculated through an analytical packet delivery overhead model. The routing-tree can be dynamically
maintained by each intersection. Sometimes to maintain the information in a particular zone for a period of
time is necessary, but it is generally difficult to implement without any infrastructure support, since vehicular
nodes move continuously at a high speed. In the second year, we proposes a collaborative information
maintenance scheme with reliable broadcast for maintaining information at urban zones, which guarantees
high successful maintain probability and minimizes the packet delivery overhead with little broadcast delay.
An analytical model is developed to analyze the relationship between the successful maintain probability and
the average vehicle density. In the last year, we will implement a real-time traffic navigation system to verify
the possibility and practicability of the distributed data dissemination and maintenance schemes developed in
the project.
Project IDs
Project ID:PB10207-1888
External Project ID:NSC102-2221-E182-031
External Project ID:NSC102-2221-E182-031
Status | Finished |
---|---|
Effective start/end date | 01/08/13 → 31/07/14 |
Keywords
- Multicast tree
- Flooding
- Collaborative information maintenance
- Reliable broadcast
- Vehicular ad hoc network (VANET).
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