Drop-Burst Length Evaluation of Urban VANETs

Abstract

Abstract-Networks performance is traditionally evaluated using packet delivery ratio (PDR) and latency (delay). We propose an addition mechanism the drop-burst length (DBL). Many traffic classes display varying application-level performance according to the pattern of drops, even if the PDR is similar. In this paper we study a number of VANET scenarios and evaluate them with these three metrics.Vehicular Ad-hoc Networks (VANETs) are an emerging class of Mobile Ad-hoc Network (MANETs) where nodes include both moving vehicles and fixed infrastructure. VANETs aim to make transportation systems more intelligent by sharing information to improve safety and comfort. Efficient and adaptive routing protocols are essential for achieving reliable and scalable network performance. However, routing in VANETs is challenging due to the frequent, high-speed movement of vehicles, which results in frequent network topology changes.Our simulations are carried out using NS2 (for network traffic) and SUMO (for vehicular movement) simulators, with scenarios configured to reflect real-world conditions. The results show that OLSR is able to achieve a best DBL performance and demonstrates higher PDR performance comparing to AODV and GPSR under low network load. However, with GPSR, the network shows more stable PDR under medium and high network load. In term of delay OLSR is outperformed by GPSR.

Mobile Ad Hoc Network in Disaster Area Network Scenario: A Review on Routing Protocols

“…Ad Hoc Network concludes wireless sensor network (WSN) that constructed of many mini, cheap and simple sensor nodes spread on a large area to collect environmental information and send them to a static base station in a single-hop fashion which in turn process and analyze the received data [3]. Vehicular ad hoc network (VANET) has the concept of establishing a network of cars and with fixed Road Side Units for a specific need or situation [4] [5]. Mobile Ad Hoc Network (MANET) is considered a multi-hop heterogeneous network.…”