20-07-2012, 04:49 PM
Introduction to Vehicular Ad Hoc Networks
57752688Introduction to Vehicular Ad Hoc.ppt (Size: 522 KB / Downloads: 48)
Basic concept of VANET
Take widely adopted and inexpensive wireless local area network (WLAN)
With few tweaks and modifications install it on vehicles
Opportunities …
vehicles can directly communicate with each other with the required infrastructure
a new paradigm for vehicle safety applications can be created
non safety applications can enhance road and vehicle efficiency
new challenges are created by high vehcile speeds and highly dynamic operating environments
new requirements , necessitated by new safety-of-life applications, which include expectations for high packet delivery rates and low packet latency
customer acceptance and governmental oversight bring very high expectations of privacy and security
IVC systems
Single-hop and multihop IVCs (SIVCs and MIVCs).
SIVC systems are useful for applications requiring short-range communications (e.g., lane merging, automatic cruise control)
MIVC systems are more complex than SIVCs but can also support applications that require long-range communications (e.g., traffic monitoring).
RVC Systems - SRVC
SRVC systems are capable of providing communication services at hot spots.
A busy intersection scheduling its traffic light, a gas station advertising its existence (and prices), and parking availability at an airport, are examples of applications requiring an SRVC system.
An SRVC system can be deployed gradually, thus not requiring substantial investments before any available benefits.
RVC Systems - URVC
A URVC system is the holy grail of vehicular communication: providing all roads with high-speed communication would enable applications unavailable with any of the other systems.
Unfortunately, a URVC system may require considerable investments for providing full (even significant) coverage of existing roadways (especially in large countries like the United States).