Geographic Centroid Routing for Vehicular Networks

A number of geolocation-based Delay Tolerant Networking (DTN) routing protocols have been shown to perform well in selected simulation and mobility scenarios. However, the suitability of these mechanisms for vehicular networks utilizing widely-available inexpensive Global Positioning System (GPS) hardware has not been evaluated. We propose a novel geolocation-based routing primitive (Centroid Routing) that is resilient to the measurement errors commonly present in low-cost GPS devices. Using this notion of Centroids, we construct two novel routing protocols and evaluate their performance with respect to positional errors as well as traditional DTN routing metrics. We show that they outperform existing approaches by a significant margin.Comment: 6 page

Performance Evaluation of Routing Protocols in Wireless Sensor Networks

The growing field of information technology enhanced the capabilities of the wireless communication. The large usage of WSN in the various fields of the real world is scaling with the wide variety of roles for wireless sensor network performance is challenging tasks. The issues of performance in the wireless sensor networks in many literatures, yet more studies are being done on the performance because the user and application needs are keep increasing,to encounter the challenges of the performance issues are studied here by digging out the routing protocols performance in WSN. To conduct the study and analysis on performance of WSN protocols the there are various performance metrics used for the evaluation of performance in WSN. This study will be carried out to come up with the simulation experiments over the directed diffusion (DD) and LEACH routing protocols in terms of energy consumption, congestion and reliability in the wireless sensor networks (WSN) environment with the low power consumptions. The simulation experiments in this study are based on the reliability, delay and other constraints to compare the speed, reliability and electricity saving data communication in the wireless sensor networks (WSN). The discussion of the conducted simulation experiments describes the steps which are pertaining to the protocols and tradeoffs and complexity of the data traffic for the efficiency. The NS2 simulation is used for the simulation based experiments for performance of wireless sensor network (WSN) communications which is demonstrating the comparative effectiveness of the routing protocols in the recent concepts. The results of the simulation are lightening the ways for the minimization of the delay and enhancement in the reliability issues in wireless sensor networks (WSN)

Design and Performance Analysis of a Geographic Routing Protocol for Highly Dynamic MANETs

Efficient multi-hop routing has become important for airborne telemetry networks. The highly dynamic nature in these scenarios results in short-lived links. Geographic-based routing has an advantage over topology-based routing to make rapid forwarding decisions based on neighbor and destination position. The AeroRP geographic routing protocol is detailed, which uses a heuristic metric for forwarding decisions that takes transmission range and a neighbor's location and velocity into consideration. The main contributions of this work include detailing and finalizing the routing decision metrics, design, and simulation implementation of AeroRP. The analysis of the simulations shows AeroRP has several advantages over other MANET routing protocols and offers tradeoffs for different performance metrics in the form of different AeroRP modes. Specifically, AeroRP yields higher accuracy than all compared routing protocols and various AeroRP modes can be chosen depending on how packet delivery and delay are prioritized

Estudio y desarrollo de un protocolo de encaminamiento geográfico y su integración con IPV6

El proyecto fin de carrera ha consistido en la implementación de un protocolo de encaminamiento geográfico y su integración con IPv6. Se ha modificado la torre de protocolos de red del sistema operativo Linux para que sea capaz de trabajar en un entorno de comunicaciones intervehiculares. De esta manera, el sistema operativo tiene la capacidad de encaminar paquetes IPv6 utilizando las posiciones geográficas que ocupan los nodos de la red. Click Modular Router es la herramienta que se ha empleado para desarrollar la implementación y ejecutar el protocolo de encaminamiento geográfico como un módulo del kernel de Linux. Dentro del estudio de la integración de IPv6 con el protocolo de encaminamiento geográfico se ha puesto especial interés en el método por el que los nodos de la red son capaces de configurar de manera automática una dirección IPv6 para sus interfaces. Este método consiste en la adaptación del mecanismo de IPv6 Stateless Address Autoconfiguration a entornos de redes vehiculares. Como evaluación de la implementación realizada, se presentan una serie de pruebas y medidas de tiempo que se realizan sobre un software de virtualización. El software de virtualización utilizado es VMWare Server 2.0, que permite crear un entorno de pruebas utilizando un único ordenador. Finalmente, se extraen las conclusiones de la realización del proyecto y se plantean posibles ampliaciones del mismo para trabajos futuros. _______________________________________________This final degree project involves the implementation of a geographic routing protocol and the integration of the IPv6 stack over it. The network protocol stack of Linux operating system has been modified to be able to work in an inter-vehicle communications environment. Thus, the operating system can route IPv6 packets using the geographical position of the network nodes. Click Modular router is the tool which has been used to develop the implementation and execute the geographic routing protocol as a Linux kernel module. In the study of the integration of IPv6 stack over the geographic routing protocol, we have emphasized the method by which network nodes are able to automatically configure an IPv6 address for its interfaces. This method involves the adaptation of IPv6 Stateless Address Autoconfiguration mechanism for vehicular network environments. As evaluation of the implementation, we present a set of tests and measurements that are performed on virtualization software. VMWare Server 2.0 is the virtualization software which has been used and allows us to create a test environment using a single computer. Finally, we draw conclusions from the project and propose possible extensions of it for future works.Ingeniería de Telecomunicació