NDLI: Efficient dynamic scheduling scheme between vehicles and roadside units based on IEEE 802.11p/WAVE communication standard

Content Provider	IEEE Xplore Digital Library
Author	Teng Jiang Alfadhl, Y. Kok Keong Chai
Copyright Year	2011
Description	Author affiliation: International School, BUPT, Beijing, P.R. China (Teng Jiang) \|\| School of EECS, QMUL, London, UK (Alfadhl, Y.; Kok Keong Chai)
Abstract	In recent years, Vehicle Ad Hoc Networks (VANETs) have become very popular. A typical VANET defines an intelligent way of using vehicular networking by integrating vehicular connections via a number of short-distance ad-hoc networking links, such as the IEEE802.11p. This type of system could provide effective communication between moving vehicles and fixed Road Side Units (RSUs), which are usually very expensive to install and may, in some cases, undergo heavy demand. To improve the efficiency of communication between vehicles and RSUs (Vehicle to Infrastructure, V2I), most existing work ignores the following facts: the uneven distribution of vehicles and unbalanced working loads on different RSUs. By considering the periodic and the unchanging features of public transportation, we propose a novel V2I hybrid optimisation scheme named Dynamic Resources Allocation Scheme (DRAS). In this scheme, all resources on the RSUs are scheduled as a whole and buses will be introduced as moving infrastructure points (or relay stations) to take some of the burden of the RSUs in real-time traffic conditions. We import the Variable-Length Contention Free Period (VL-CFP) for MAC access and also define Time-to-Live (TTL) value to guarantee the data credibility on bus. Using both Math analysis and NS-2 simulation, we can prove our DRAS can achieve a better QoS performance and adequate utilisation of RSU resources than legacy 802.11p and WAVE-based HCCA. These advantages become more obvious as the vehicles number increases.
Starting Page	120
Ending Page	125
File Size	499713
Page Count	6
File Format	PDF
ISBN	9781612846682
e-ISBN	9781612846712
DOI	10.1109/ITST.2011.6060038
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-23
Publisher Place	Russia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	DRAS Quality of service VANET Throughput Dynamic scheduling V2I Delay NS-2 Vehicles Analytical models WAVE IEEE 802.11p Bandwidth
Content Type	Text
Resource Type	Article

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