University of Murcia

Displaying 1-17 of 17 results

  • White Papers // Jan 2012

    Enhanced Internet Connectivity for Hybrid Ad Hoc Networks Through Adaptive Gateway Discovery

    One of the key components affecting the overall performance of hybrid ad hoc networks is the algorithm used to discover and select Internet gateways. The authors have analytically modeled existing proposals (i.e. proactive, reactive and hybrid gateway discovery) showing that each of them is most suited only for a limited...

    Provided By University of Murcia

  • White Papers // Jan 2012

    Maximal Source Coverage Adaptive Gateway Discovery for Hybrid Ad Hoc Networks

    One of the most important aspects affecting the overall performance of hybrid ad hoc networks is the efficient selection of Internet gateways. The authors have analytically modeled existing proposals (i.e. adaptive, reactive and hybrid gateway discovery) showing that each of them is only suitable for a particular range of network...

    Provided By University of Murcia

  • White Papers // Nov 2011

    Fuzzy Mobile-Robot Positioning in Intelligent Spaces Using Wireless Sensor Networks

    This paper presents the development and experimental evaluation of a method based on fuzzy logic to locate mobile robots in an Intelligent Space using Wireless Sensor Networks (WSNs). The problem consists of locating a mobile node using only inter-node range measurements, which are estimated by radio frequency signal strength attenuation....

    Provided By University of Murcia

  • White Papers // Nov 2011

    TCP Flow-Aware Channel Re-Assignment in Multi-Radio Multi-Channel Wireless Mesh Networks

    The authors consider the traffic-aware channel assignment problem in a multi-radio Wireless Mesh Network that involves assigning channels to radio interfaces to optimize the performance of a set of TCP flows (flow throughput and fairness). The resulting optimization problem is NP-hard. At the TCP flow level, rapid traffic fluctuations are...

    Provided By University of Murcia

  • White Papers // Nov 2011

    SBGR: A Simple Self-Protected Beaconless Geographic Routing for Wireless Sensor Networks

    In geographic routing a node forwards data packets to a neighbor which is closer to the destination than itself. However, most of the existing geographic routing protocols have not been designed to work effectively in scenarios with malicious nodes. Some protocols use cryptographic schemes, reputation schemes and other sorts of...

    Provided By University of Murcia

  • White Papers // Jan 2011

    Multicast Ad Hoc Routing Through Mobility-Aware Steiner Tree Meshes With Consistency Across Different Mobility Models

    The authors study the problem of reducing the data overhead of mesh-based multicast ad hoc routing protocols while maintaining high packet delivery ratios. Their proposed approach adaptively controls the redundancy added by the routing protocol to the minimal data overhead multicast mesh. They show that the problem of finding the...

    Provided By University of Murcia

  • White Papers // Jan 2011

    Mobility-Aware Adaptive Counter-Based Forwarding Elimination to Reduce Data Overhead in Multicast Ad Hoc Routing

    Most of the previous efforts regarding multicast routing in MANETs, have been devoted to the provision of low-control overhead protocols, being able to maximize the packet delivery ratio. In multicast routing, the non-optimality of the forwarding structure can also lead to transmission of additional data packets (compared to the minimum...

    Provided By University of Murcia

  • White Papers // Oct 2010

    An Initial Approach to Support Mobility in Hospital Wireless Sensor Networks Based on 6LoWPAN (HWSN6)

    LoW-power Personal Area Networks (LoWPANs) are still in its early stage of development, but the range of conceivable usage scenarios is tremendous. The numerous possible applications of Wireless Sensor Networks (WSNs) make obvious that mesh and multi-technology topologies will be prevalent in LoWPAN environments and mobility is one of the...

    Provided By University of Murcia

  • White Papers // May 2010

    Efficient Gateway Discovery Algorithms for Delay-Tolerant and Delay-Constrained Data Traffic in Vehicular Ad-Hoc Networks

    The authors focus on the problem of efficient dissemination of available gateways information throughout a Vehicular Ad-hoc NETwork (VANET). Contrary to previous works, they also consider how the gateway discovery protocol affects user data flows that are routed to the infrastructure network. The cases of both delay-tolerant and delay-constrained user...

    Provided By University of Murcia

  • White Papers // Jan 2010

    Reducing Data-Overhead of Mesh-Based Ad Hoc Multicast Routing Protocols by Steiner Tree Meshes

    Authors study the problem of reducing data overhead of mesh-based multicast ad hoc routing protocols by reducing the number of forwarding nodes. Authors show that minimizing the number of forwarding nodes is equivalent to the problem of finding the minimal cost multicast tree. In addition, authors demonstrate the problem to...

    Provided By University of Murcia

  • White Papers // Jul 2009

    Time, Quality And Growth

    Consumption requires time. Also, higher-quality goods provide more utility per unit of time, though at a higher monetary cost. Since time is limited, higher income is decreasingly spent augmenting the quantity of consumption and increasingly spent upgrading its quality. After analyzing these consumer quantity/quality choices, the paper investigates its implications...

    Provided By University of Murcia

  • White Papers // Jun 2009

    Virtual-GEMS: An Infrastructure to Simulate Virtual Machines

    Off late, virtualization has become a hot topic in computer architecture research. The cost reduction and management simplification brought by server consolidation are good reasons why virtualization has become so popular. But there is a lack of tools for researchers to seek new proposals of architectures that improve the performance...

    Provided By University of Murcia

  • White Papers // May 2009

    Artistic Creation And Intellectual Property Francisco

    Promoting high-quality artistic creation requires sorting the most talented people of each generation and developing their skills. This paper takes a professional-career perspective in analyzing the determinants of artistic creation. The paper builds an overlapping generations model of artists with three features: the number of highly talented artists in a...

    Provided By University of Murcia

  • White Papers // Feb 2009

    Explaining Mobile Commerce Services Adoption by Different Type of Customers

    Mobile phones have been proclaimed as the new service frontier. Nowadays, in addition to traditional mobile services, new mobile commerce services are ready to be used by customers based on 3G-related technologies. However, little is known about the reasons why different groups of customers adopt mobile commerce services. By means...

    Provided By University of Murcia

  • White Papers // Jan 2009

    Reliable and Efficient Broadcasting in Vehicular Ad Hoc Networks

    Most of the envisioned services over vehicular networks need to deliver information to all vehicles inside a certain region. Several such broadcasting protocols have been reported so far, but surprisingly only one of them addresses the issue of intermittent connectivity. In this paper, the authors present a broadcast protocol which...

    Provided By University of Murcia

  • White Papers // Jan 2009

    Simulation-Based Study of Common Issues in VANET Routing Protocols

    Vehicular communications have been one of the hottest research topics for the last few years. Many routing protocols have been proposed for such kind of networks. Most of them try to exploit the information which may be available at the vehicle by the time that a routing decision must be...

    Provided By University of Murcia

  • White Papers // Jan 2009

    Achieving Spatial Disjointness in Multipath Routing Without Location Information

    The authors develop an on-demand multipath routing protocol for Multi-hop Wireless Networks (MWNs), capable of finding spatially disjoint paths without the need of location information. Multipath routing can enable various applications and enhancements in MWNs, such as load balancing, bandwidth aggregation, reliability and secure communications. The use of spatially disjoint...

    Provided By University of Murcia

  • White Papers // Jun 2009

    Virtual-GEMS: An Infrastructure to Simulate Virtual Machines

    Off late, virtualization has become a hot topic in computer architecture research. The cost reduction and management simplification brought by server consolidation are good reasons why virtualization has become so popular. But there is a lack of tools for researchers to seek new proposals of architectures that improve the performance...

    Provided By University of Murcia

  • White Papers // Feb 2009

    Explaining Mobile Commerce Services Adoption by Different Type of Customers

    Mobile phones have been proclaimed as the new service frontier. Nowadays, in addition to traditional mobile services, new mobile commerce services are ready to be used by customers based on 3G-related technologies. However, little is known about the reasons why different groups of customers adopt mobile commerce services. By means...

    Provided By University of Murcia

  • White Papers // Jan 2010

    Reducing Data-Overhead of Mesh-Based Ad Hoc Multicast Routing Protocols by Steiner Tree Meshes

    Authors study the problem of reducing data overhead of mesh-based multicast ad hoc routing protocols by reducing the number of forwarding nodes. Authors show that minimizing the number of forwarding nodes is equivalent to the problem of finding the minimal cost multicast tree. In addition, authors demonstrate the problem to...

    Provided By University of Murcia

  • White Papers // May 2009

    Artistic Creation And Intellectual Property Francisco

    Promoting high-quality artistic creation requires sorting the most talented people of each generation and developing their skills. This paper takes a professional-career perspective in analyzing the determinants of artistic creation. The paper builds an overlapping generations model of artists with three features: the number of highly talented artists in a...

    Provided By University of Murcia

  • White Papers // Jul 2009

    Time, Quality And Growth

    Consumption requires time. Also, higher-quality goods provide more utility per unit of time, though at a higher monetary cost. Since time is limited, higher income is decreasingly spent augmenting the quantity of consumption and increasingly spent upgrading its quality. After analyzing these consumer quantity/quality choices, the paper investigates its implications...

    Provided By University of Murcia

  • White Papers // Jan 2009

    Achieving Spatial Disjointness in Multipath Routing Without Location Information

    The authors develop an on-demand multipath routing protocol for Multi-hop Wireless Networks (MWNs), capable of finding spatially disjoint paths without the need of location information. Multipath routing can enable various applications and enhancements in MWNs, such as load balancing, bandwidth aggregation, reliability and secure communications. The use of spatially disjoint...

    Provided By University of Murcia

  • White Papers // Jan 2011

    Multicast Ad Hoc Routing Through Mobility-Aware Steiner Tree Meshes With Consistency Across Different Mobility Models

    The authors study the problem of reducing the data overhead of mesh-based multicast ad hoc routing protocols while maintaining high packet delivery ratios. Their proposed approach adaptively controls the redundancy added by the routing protocol to the minimal data overhead multicast mesh. They show that the problem of finding the...

    Provided By University of Murcia

  • White Papers // Jan 2011

    Mobility-Aware Adaptive Counter-Based Forwarding Elimination to Reduce Data Overhead in Multicast Ad Hoc Routing

    Most of the previous efforts regarding multicast routing in MANETs, have been devoted to the provision of low-control overhead protocols, being able to maximize the packet delivery ratio. In multicast routing, the non-optimality of the forwarding structure can also lead to transmission of additional data packets (compared to the minimum...

    Provided By University of Murcia

  • White Papers // Nov 2011

    TCP Flow-Aware Channel Re-Assignment in Multi-Radio Multi-Channel Wireless Mesh Networks

    The authors consider the traffic-aware channel assignment problem in a multi-radio Wireless Mesh Network that involves assigning channels to radio interfaces to optimize the performance of a set of TCP flows (flow throughput and fairness). The resulting optimization problem is NP-hard. At the TCP flow level, rapid traffic fluctuations are...

    Provided By University of Murcia

  • White Papers // Nov 2011

    SBGR: A Simple Self-Protected Beaconless Geographic Routing for Wireless Sensor Networks

    In geographic routing a node forwards data packets to a neighbor which is closer to the destination than itself. However, most of the existing geographic routing protocols have not been designed to work effectively in scenarios with malicious nodes. Some protocols use cryptographic schemes, reputation schemes and other sorts of...

    Provided By University of Murcia

  • White Papers // Jan 2012

    Enhanced Internet Connectivity for Hybrid Ad Hoc Networks Through Adaptive Gateway Discovery

    One of the key components affecting the overall performance of hybrid ad hoc networks is the algorithm used to discover and select Internet gateways. The authors have analytically modeled existing proposals (i.e. proactive, reactive and hybrid gateway discovery) showing that each of them is most suited only for a limited...

    Provided By University of Murcia

  • White Papers // Jan 2012

    Maximal Source Coverage Adaptive Gateway Discovery for Hybrid Ad Hoc Networks

    One of the most important aspects affecting the overall performance of hybrid ad hoc networks is the efficient selection of Internet gateways. The authors have analytically modeled existing proposals (i.e. adaptive, reactive and hybrid gateway discovery) showing that each of them is only suitable for a particular range of network...

    Provided By University of Murcia

  • White Papers // Oct 2010

    An Initial Approach to Support Mobility in Hospital Wireless Sensor Networks Based on 6LoWPAN (HWSN6)

    LoW-power Personal Area Networks (LoWPANs) are still in its early stage of development, but the range of conceivable usage scenarios is tremendous. The numerous possible applications of Wireless Sensor Networks (WSNs) make obvious that mesh and multi-technology topologies will be prevalent in LoWPAN environments and mobility is one of the...

    Provided By University of Murcia

  • White Papers // May 2010

    Efficient Gateway Discovery Algorithms for Delay-Tolerant and Delay-Constrained Data Traffic in Vehicular Ad-Hoc Networks

    The authors focus on the problem of efficient dissemination of available gateways information throughout a Vehicular Ad-hoc NETwork (VANET). Contrary to previous works, they also consider how the gateway discovery protocol affects user data flows that are routed to the infrastructure network. The cases of both delay-tolerant and delay-constrained user...

    Provided By University of Murcia

  • White Papers // Jan 2009

    Reliable and Efficient Broadcasting in Vehicular Ad Hoc Networks

    Most of the envisioned services over vehicular networks need to deliver information to all vehicles inside a certain region. Several such broadcasting protocols have been reported so far, but surprisingly only one of them addresses the issue of intermittent connectivity. In this paper, the authors present a broadcast protocol which...

    Provided By University of Murcia

  • White Papers // Jan 2009

    Simulation-Based Study of Common Issues in VANET Routing Protocols

    Vehicular communications have been one of the hottest research topics for the last few years. Many routing protocols have been proposed for such kind of networks. Most of them try to exploit the information which may be available at the vehicle by the time that a routing decision must be...

    Provided By University of Murcia

  • White Papers // Nov 2011

    Fuzzy Mobile-Robot Positioning in Intelligent Spaces Using Wireless Sensor Networks

    This paper presents the development and experimental evaluation of a method based on fuzzy logic to locate mobile robots in an Intelligent Space using Wireless Sensor Networks (WSNs). The problem consists of locating a mobile node using only inter-node range measurements, which are estimated by radio frequency signal strength attenuation....

    Provided By University of Murcia