Title: Vehicle assisted cross-layer handover scheme in NEMO-based VANETs (VANEMO)

Authors: A. Prakash, S. Tripathi, R. Verma, N. Tyagi, R. Tripathi, K. Naik

Addresses: Department of Electronics and Communication Engineering, Indian Institute of Information Technology, Allahabad 211012, India. ' Department of Electronics and Communication Engineering, Motilal Nehru National Institute of Technology, Allahabad 211004, India. ' Department of Electronics and Communication Engineering, Motilal Nehru National Institute of Technology, Allahabad 211004, India. ' Department of Electronics and Communication Engineering, Motilal Nehru National Institute of Technology, Allahabad 211004, India. ' Department of Electronics and Communication Engineering, Motilal Nehru National Institute of Technology, Allahabad 211004, India. ' Department of Electrical and Computer Engineering, University of Waterloo, Waterloo N2L 3G1, Canada

Abstract: The combination of VANET and NEMO is termed as VANEMO. In this paper, we propose the use of ad hoc communications between vehicles in VANEMO to assist seamless NEMO handover in vehicular scenario. Using cross-layer information, a vehicle which is undergoing handover process, can take assistance from other vehicles in the ad hoc region to reduce handover latency as well as to minimise packet loss during handover. Using other vehicle|s assistance, a handover vehicle can get the router advertisement of the next access point before actual handover takes place. Thus, it can configure its new care-of-address on the fly, resulting in considerable reduction in handover latency. At the same time, another vehicle in the ad hoc region may assist in receiving packets destined for handover vehicle, resulting in minimisation of packet loss during handover period. The main contribution of this paper is to optimise handover latency and minimise packet loss based on the uses of mixed ad hoc and infrastructure communications, thus enabling vehicle to infrastructure communications to be improved. The proposed solution is characterised and evaluated through extensive simulation, showing that it provides an efficient handover in vehicular communications.

Keywords: 802.11p; cross-layer handover; network mobility; NEMO; vehicular ad hoc networks; VANETs; NEMO; VANEMO; vehicular networks; handover latency; packet loss; care-of-address; vehicle communications.

DOI: 10.1504/IJIPT.2011.040617

International Journal of Internet Protocol Technology, 2011 Vol.6 No.1/2, pp.83 - 95

Available online: 07 Jun 2011 *

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