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Mobile Ad Hoc Networks

Mobile Ad-hoc NETworks (MANETs) are multi-hop ad-hoc wireless networks in which there are no backbone infrastructure. Each Mobile Node (MN) acts either as a host generating flows or being the destination of flows from other MN or as a router forwarding flows directed to other MN. Due to the unpredictable location and mobility of MNs in MANETs, classical routing protocols used on wired networks are not suitable for MANETs. Protocols defined for ad hoc networks are classified as reactive protocols and proactive protocols. In the case that the network is disruptive, store-carry-forward techniques can be used to deal with the disruptions of the network.

During the past years, we have been involved in projects in which the mobility of nodes has had a great impact in the protocols and systems:

  • Although, we have not directly participated in a project about vanet modeling, in all our papers related to VANET's, we have considered realistic mobility traces and we have studied and analysed our algorithms under the presence of the most realistic scenarios. For example, in the papers related to VANET's we have used the "ETH Zurich Vehicular Traces" generated at the Computer Science Department of ETH Zurich.
  • Project COWHAN (Cooperative and Opportunistic Wireless Heterogeneous Access Networks, 2011-2014) is a National project devoted to the study wireless access networks aiming at offering a high-speed access and at the same time service ubiquity and global mobility. The objective is to study the diversity and evolution of wireless access networks: cellular, multi-hop (ad-hoc or mesh) and hybrid architectures and their interaction with a series of new abstractions or paradigms in wireless networking (e.g. disruptive and delay tolerant networks, cooperative networks, cognitive radio networks, self-organizing networks...). More specifically, these two broad objectives are addressed: (i) issues related to wireless access networks and to ad-hoc, self-organizing and self-configurable networks; and (ii) the new networking paradigms and their application to the diversity of wireless access technologies.
  • The idea of InfoMob (Information Mobility in Ad Hoc Wireless Networks, June 2008-June 2009) was to devise algorithms and protocols to support targeted information mobility in wireless ad hoc networks. By the term “targeted information mobility” we refer to circulating information copies around the ad hoc network so that they eventually achieve a desired distribution in a specific geographical area, for desired amount of time.
  • In project MOPP-NET (Realistic Mobility Modeling for Opportunistic Networking, July 2010-June 2011), we focused on modeling realistic mobility behavior on micro/meso/macro scale for opportunistic networks. We also work in information and data flow models for information sensed and generated by mobile entities, such as vehicles in city traffic.
  • In the WIDENS (Wireless Deployable Network System, 2003-2005) project, we designed, prototyped and validated a high data-rate, rapidly deployable and scalable wireless ad-hoc communication system for future public safety, emergency and disaster applications. The project developed a terminode with existing and emerging technologies at Layer 2, 3 and 5 including MAC aspects, routing ad hoc, security, QoS and applications. We particularly participated in development of the L3 together with the University of Antwerpt. The L3 included OLSR as main protocol together with a QoS module including a CAC (Conecction Admission Control) mechanism.
  • In the MOEBIUS (MObile Extranet Based Integrated User Services, 2000-2002) the objective was to apply mobile information and communication technologies to medicine and healthcare. The Mobile Extranet concept included relevant items such as the mobility aspect at access level (GPRS, GSM, etc.), the IP mobility aspects, the security aspects.

Moreover, during these years, in most of the research papers, we have tried to use realistic mobility models. We think that the impact of these models in the design of a wireless network that is mobile and ubiquitious makes the topic quite relevant.