Recent development in wireless technology enables communication between vehicles. The concept of cooperative adaptive cruise control (CACC)–which uses wireless communication between vehicles–aims at string stable behavior in a platoon of vehicles. “String stability” means any non-zero position, speed, and acceleration errors of an individual vehicle in a string do not amplify when they propagat...

In this paper the performance of INET’s emulation mode is evaluated. In particular, the focus of the study is on the precision of the delay emulation. It is shown, that this precision is low in INET 2.6 (respectively a later version provided in the integration branch that fixed the crashes of 2.6 in emulation mode). Two errors in the implementation are identified and an alternative configuratio...

In this paper we present the results of a study within the CRUISE Network of Excellence. Within CRUISE we have simulated a simple scenario for Wireless Sensor Networks with three different simulation tools: NS-2, OMNeT++ and OPNET. The scenario investigated is that of a fire fighter entering a building and deploying sensor nodes in different rooms. Data collected from the sensor nodes is transm...

Multimedia applications require certain QoS guarantees to be met in order to function properly. QoS requirements for multimedia transmission include bandwidth guarantees and temporal guarantees (delay and jitter). Existing routing protocols on MANeTs are not adequate enough to deal with these necessities imposed by multimedia traffic. In this article, an adaptation of MPLS is proposed for MANeT...

This paper presents the DoRa protocol, which is a new cross-layer protocol for handling the double radio of nodes in wake-up radio scenario. The implementation details in OMNET++/MiXiM are also given, with a focus on the implemented MAC layers. The main goal of the DoRa protocol is to reduce energy consumption in wireless sensor network, by taking full advantage of the passive wake-up scheme. T...

Google released in 2013 a script-based tool called packetdrill, which allows to test transport protocols like UDP and TCP on Linux and BSD-based operating systems. The scripts defining a test-case allow to inject packets to the implementation under test, perform operations at the API controlling the transport protocol and verify the sending of packets, all at specified times. This paper describ...

Switching connectivity over multiple wireless interfaces of a mobile node is essential when performing handover between heterogeneous networks. In such a communication scenario, session continuity as experienced by the user can be enhanced if soft handover is enabled through the concept of make-before-break. However, some of the available networking protocols need to be modified to support this...

The design of an interconnection network and switch architectural design are significantly influenced by contemporary supercomputer technology. As technology evolves, its impact on interconnection network needs to be reevaluated and elaborated. In this paper we have traced the path in this direction and addressed performance analyses of a high speed 4x4 switch design and interconnect network in...

This Paper provides a study and review of existing congestion control algorithms in various types of homogenous and heterogeneous networks. To test the new methodology for the congestion and flow control we have used the two different discrete event simulation tools. The OPNET simulation tool is used to find out performance of the TCP reliable protocol for built-in congestion control mechanism....

We propose Mobile Probabilistic ADdressing (MPAD), a virtual-coordinates-based routing protocol for Wireless Mesh Networks (WMNs). In contrast to other virtual coordinates based protocols such as Beacon Vector Routing (BVR), our approach collects statistical distributions of hop distances, thereby avoiding explicit link estimation. MPAD therefore captures topology changes arising from link vari...