The vehicular communications using Wireless Local Area Network (WLAN) technologies are intended for the safety applications to improve the travelling safety on highways. Typical safety applications include traffic signal violation warning, emergency electronic brake lights, pre-crash warning, cooperative danger warning message dissemination, lane change warning, etc. Such applications rely on local wireless communications among vehicles and between vehicle and roadside, and have strict requirements on reliability and latency that is usually less than 100 milliseconds. Besides, applications like cooperative forward collision warning require multi-hop operation to cover the Zone of Relevance (ZoR) going beyond the communication range of one hop. Therefore, an efficient broadcast/rebroadcast algorithm plays an important role for guaranteeing the Quality of Service (QoS) of danger warning applications and improving the system spectrum efficiency.
Academic studies have been extensively carried out on the broadcast and rebroadcast algorithms covering flooding, location based geocast, adaptive rebroadcast, etc. The task of this student project is to perform a literature survey on the state of the art of rebroadcast algorithms, and make a comparison study among the existing algorithms with respect to their suitability to the cooperative danger warning applications in vehicular environments. The expected result of this work is in the form a project report.
Suggested concrete tasks:
In order to achieve the above mentioned goal, a step by step approach is proposed as follows:
Service specification and requirements analysis for cooperative danger warning message dissemination in highway scenario
Getting familiar with the IEEE 802.11p/IEEE 1609 vehicular communication system
Literature survey on broadcast and rebroadcast algorithms for message dissemination
Comparison study on the existing algorithms with analyses on their performance in vehicular danger warning applications
Proposed enhancement to the existing algorithm or novel algorithm concerning the requirement in vehicular environments are preferred
Tools used in our researches:
Specification and Description Language (SDL)
Matlab
Unix
LaTex
English (fluent)
If you are interested in our research topic or the cooperation with our industrial partner Philips, please just drop me an email or visit me in the office :-)
