Title: Cache agent-based geocasting in VANETs

Authors: Omprakash Kaiwartya; Sushil Kumar

Addresses: Wireless Communication and Networking Lab, School of Computer and Systems Sciences, Jawaharlal Nehru University, New Delhi, India-110067, India ' Wireless Communication and Networking Lab, School of Computer and Systems Sciences, Jawaharlal Nehru University, New Delhi, India-110067, India

Abstract: Geocast routing is one of the most investigated choices for researchers of VANETs due to group of vehicles sharing geographical region on the road. Most existing geocast protocols are based on flooding technique. They suffer from high packet duplication, hop-to-hop disconnection, hop count, packet loss and low packet delivery. In this paper, a cache agent-based geocasting (CAG) protocol is proposed. Re-caching and full radio range transmissions integrated with connectivity assurance algorithm (CAA) are the two additional concepts of CAG. The performance of CAG has been compared with caching and transmission range control (CTRC) and directional flooding (D-Flooding) protocols. CAG outperforms CTRC and D-Flooding in terms of packet delivery, packet duplication, hop-to-hop disconnection, hop count, and packet loss.

Keywords: geocasting; cache agents; poisson distribution; caching; transmission range control; directional flooding; VANETs; vehicular ad-hoc networks; geocast routing; packet delivery; packet duplication; hop-to-hop disconnection; hop count; packet loss; agent-based systems.

DOI: 10.1504/IJICT.2015.072038

International Journal of Information and Communication Technology, 2015 Vol.7 No.6, pp.562 - 584

Received: 21 Sep 2013
Accepted: 06 Jan 2014
Published online: 30 Sep 2015 *

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