Archive for the ‘its’ tag
GeoNet concluded its activity with its Final Workshop that took place 29 January 2010 in INRIA’s premises in Paris, France. IPv6 GeoNetworking was presented together with its link with the related ITS development in CAR 2 CAR Communication Consortium, CVIS implementation and ETSI TC ITS standardization.
Moreover the functionalities of IPv6 GeoNetworking was shown in a real system including 3 cars, 2 road-side units and a control center. A (very simple) enhanced driver awareness application was demonstrated and numerous attendees could enjoy a ride to see the achievement.
The FP7-funded European project GeoNet designed, implemented, tested and pushed for standardization an IPv6 GeoNetworking architecture related to many other major initiatives like CAR 2 CAR Communication Consortium and CVIS.
- Thierry Ernst, Andras Kovacs, Wenhui Zhang: GeoNet Architecture and Specification
- Emilio Dávila González: About cooperative systems in Europe
- Wenhui Zhang: GeoNet Implementation and testing
- Thierry Ernst: Why IPv6 GeoNetworking is needed for ITS?
- GeoNet IPv6 GeoNetworking live demonstration
- Carlos J. Bernardos: GeoNet system design
- Arnaud de La Fortelle: Talking cars
- Hamid Menouar: GeoNet Use and dissemination
Resource Sharing Principles for Vehicular Communications
This paper proposes a suitable scalability principle for each major vehicular communication scenario: periodic safety broadcasts, event-driven safety broadcasts, and unicast message forwarding. Each scenario section investigates an appropriate design of individual congestion control tools for the implementation of related scalability principle.
Estimation of Channel Utilization at the Beaconing Edge
Estimating channel utilization at beaconing edge is important, so that power control feedback can be based on comparing this utilization rate to a target level. The beaconing edge channel utilization estimate presented in the ‘Resource Sharing Principles for Vehicular Communications’ paper is revised with the following aspects;
– taking an estimate of link asymmetry into account,
– interpolating on link attenuation metric instead of distance metric.
GeoMapped Timing of Beacons and Unicast Messages
This paper proposes a timing algorithm for assignment of beacon transmissions. The proposed geographically derived beacon timer solves the problem of ‘hidden-terminal’ packet collisions for periodic broadcasts and certain unicast messages, regardless of particular road network topology details.
There is an ongoing contest of ideas for reducing urban traffic congestions, called ‘ITS Congestion Challenge‘. The submission is open for all, and judging ideas is through community method, so this may give a sense of what solution is favored by the general public. The idea entry is open till end of July, and ranking will be done during August. The best ranked idea will emerge in September, the winner will be announced at the Stockholm ITS World Congress.
Proposed solutions can be viewed and voted through following link, after registering:
Traffic flows are greatly enhanced when unnecessary lane changes are eliminated and the hard shoulder is safely taken into use during peak hours. This results in better use of existing infrastructure. Analogy: smooth and turbulent flow of air.
BroadBit a submitted a proposal to this challenge called ‘Laminar traffic flows and dynamic hard shoulder utilization’, which promotes better use of existing urban roads through intelligent sensor infrastructure. Vote it if you like it.
As first step, let’s consider what happens on urban roads before congestion arises:
- Different lanes develop different speeds. Some cars switch lanes as they hunt for fastest lane, hindering everyone else during the merging.
- Some cars switch more than one lane as they head to a highway exit from an inner lane, causing more hold-up than a foresighted driver.
- At some critical point the free-flow pauses, and later restarts. On hard-shouldered highways the outermost emergency lane is left unused during all these congestions because of safety regulations – except for occasional rogue drivers zipping by. There surely must be a way to make better use of this under-utilized road surface – and without incurring any safety risks.
On June, 24 and 25 2008, Partners from 24 European organizations gave the “kick-off “ to TeleFOT, a Large Scale Collaborative Project under the Seventh Framework Programme, co-funded with 9,7 million Euro by the European Commission DG Information Society and Media within the strategic objective “ICT for Cooperative Systems”.
Officially started on June 1st 2008, TeleFOT acts in response to a need recognised by the European Commission, namely to test the impacts of driver support functions on the driving task with large fleets of test drivers in real-life driving conditions. In particular, TeleFOT intends to assess the impacts of functions provided by aftermarket and nomadic devices, including future interactive traffic services that will become part of driving environment systems within the next five years.
BroadBit is involved in TeleFOT as responsible of supplying test vehicles with driver activity logging technology.