Hybrid Mobility Model Research Articles

HYBRIST Mobility Model - A Novel Hybrid Mobility Model for VANET Simulations

Simulations play a vital role in implementing, testing and validating proposed algorithms and protocols in VANET. Mobility model, defined as the movement pattern of vehicles, is one of the main factors that contribute towards the efficient implementation of VANET algorithms and protocols. Using near reality mobility models ensure that accurate results are obtained from simulations. Mobility models that have been proposed and used to implement and test VANET protocols and algorithms are either the urban mobility model or highway mobility model. Algorithms and protocols implemented using urban or highway mobility models may not produce accurate results in hybrid mobility models without enhancement due to the vast differences in mobility patterns. It is on this score the Hybrist, a novel hybrid mobility model is proposed. The realistic mobility pattern trace file of the proposed Hybrist hybrid mobility model can be imported to VANET simulators such as Veins and network simulators such as ns2 and Qualnet to simulate VANET algorithms and protocols.

A novel hierarchical model for vehicular traffic regulation

The aim of the research is to regulate the vehicular traffic in the most effective and efficient way in Vehicular Adhoc Networks (VANET). The challenges faced by the existing networks are ripple effect of reclustering, communication complexity, mobility, throughput and delay in an urban environment. Moreover unpredictable topology changes in VANET, obstruct expected packet delivery ratio and leads to congestion by overheads for link maintenance. The existing routing techniques suffer from excessive loss of data, delay and need for continuous monitoring where group member's loss their link in randomwaypoint mobility scenarios. In this paper, a novel hierarchical model combining the features of hierarchical clustering, hybrid mobility model and location based 2hop Multicast Flooding (L2MF) for data forwarding has been proposed. By comparing the proposed protocol with previous protocols, the enhanced performance in packet delivery ratio, control overhead, and end-to-end delay has been proved.

A Novel Cluster based Routing Algorithm for Hybrid Mobility Model in VANET

This paper proposes a new approach for cluster based routing algorithm for hybrid mobility model to regulating the vehicular traffic. Our approach uses a new hybrid mobility model combining randomwaypoint and group mobility model using static and dynamic sources and a novel cluster based routing algorithm. To transmit the real time updated information and maintain long link duration to improve the data delivery ratio, we propose Location based Multipath Flooding (LMF) algorithm, which is suitable for vehicles with variable mobility. The scenario and the network are modeled and investigated through extensive simulations using Ns2 simulator to study the performance in terms of cluster construction.