MITIGACIÓN DE TORMENTA DE BROADCAST EN LA TRANSMISIÓN DE MENSAJES DE EMERGENCIA USANDO COMPARTICIÓN DE ESPECTRO EN VANETS DE RADIO COGNOSCITIVO (BROADCAST STORM MITIGATION IN EMERGENCY MESSAGES TRANSMISSION USING SPECTRUM SHARING IN COGNITIVE RADIO VANETS)
Resumen
El denominado fenómeno de tormenta de broadcast presente en las redes inalámbricas y con gran número de nodos; es importante atacarlo durante la implementación de aplicaciones de seguridad en las redes vehiculares de radio cognoscitivo (COG-VANETs). En este trabajo se presenta una breve introducción a las COG-VANETs y radio cognoscitivo, y como es que estas dos tecnologías se pueden conjuntar para ayudar a la transmisión eficiente de mensajes de seguridad. Se presenta el modelo matemático que utiliza la banda de Comunicaciones Dedicadas de Rango Corto (DSRC) y la banda de Espacios en blanco de TV (TVWS) para la transmisión de los mensajes de seguridad. Se muestran los resultados del modelo bajo condiciones de saturación de la densidad, y se abordan la discusión y conclusiones de los efectos de la densidad y como se relaciona directamente con el problema de tormenta de broadcast, además se sugieren líneas de solución y mejora.
The so-called broadcast storm phenomenon which is common at wireless networks and in other networks with high number of users; it is important to attack it in the implementation of security applications in the cognitive radio vehicle networks (COG-VANETs). This paper presents a brief introduction to COG-VANETs and cognitive radio and how these two technologies can be combined to help the efficient transmission of safety messages. In this work is presented the mathematical model that incorporates the Dedicated Short-Range Communications (DSRC) and TV White Spaces (TVWS) bands for the transmission of safety messages. Also the results of the model under conditions of saturation of density are shown, and the discussion and conclusions of the effects of density and how it relates directly to the problem of broadcast storm are addressed. Lines of solution and improvement are also suggested in order to mitigate this phenomenon.
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