Now showing items 1-20 of 25

    • Ad Hoc 802.11b cooperative protocols: performance in a slow fading channel 

      Agarwal, Niraj, 1977-; ChanneGowda, Divya, 1981-; Kannan, Lakshmi Narasimhan, 1984-; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-05-24)
      This paper investigates the use of cooperative communications in the context of ad hoc IEEE 802.11b to combat radio signal degradations due to slow fading. The performance gain of both an existing cooperative protocol and ...
    • An analytical model with improved accuracy of IEEE 802.11 protocol under unsaturated conditions 

      Vijayasankar, Kumaran, 1984-; Taufique, Azar; Kannan, Lakshmi Narasimhan, 1984-; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-05-23)
      In this work the authors present an analytical model that - compared to previously published work- more accurately captures the delay of IEEE 802.11 protocol under low, medium, and near-saturation load conditions. A Markov ...
    • Building alternate multitasking trees in MPLS networks 

      Tang, Limin, 1977-; Billenhalli, Shreejith; Vardhan, Hars; Tacca, Marco, 1973-; Fumagalli, Andrea; Monti, Paolo, 1973- (The University of Texas at Dallas, 2013-05-23)
      An algorithm for computing alternate multicast trees in packet transport networks is proposed in this paper. The algorithm efficiently computes multiple sub-optimal tree candidates for a given multicast service request. ...
    • Combining cooperative link layer protocols with distributed routing protocols in mobile ad hoc networks – perspectives and performance analysis 

      Vijayasankar, Kumaran, 1984-; Kannan, Lakshmi Narasimhan, 1984-; Ilango, Sathya; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-06-18)
      In cooperative link layer protocols the use of relay nodes may increase the capacity of the radio links. The study in this paper investigates what (if any) performance gain may be passed onto the routing protocol of a ...
    • Cooperative and non-cooperative ARQ protocols for microwave recharged sensor nodes 

      Tacca, Marco, 1973-; Monti, Paolo, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-06-18)
      The Generic Autonomous Platform for Sensor Systems, or GAP4S, is a maintenance-free wireless sensor network in which the sensor battery needs not be replaced. Power is delivered to the sensor via a microwave signal that ...
    • Cooperative communications in multihop networking: a case study based on the IEEE 802.11 protocol 

      Kannan, Lakshmi Narasimhan, 1984-; Vijayasankar, Kumaran, 1984-; ChanneGowda, Divya, 1981-; Agarwal, Niraj, 1977-; Fumagalli, Andrea; Tacca, Marco, 1973- (The University of Texas at Dallas, 2013-05-24)
      This paper combines multi-hop networking with single-hop cooperative communications. The solution is built upon the standard IEEE 802.11 protocol operating in the ad hoc mode. A simulation based comparison is carried out ...
    • A cross layer routing metric with wireless cooperative protocols 

      Vijayasankar, Kumaran, 1984-; Kannan, Lakshmi Narasimhan, 1984-; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-06-18)
      Cooperative link layer protocols are typically used in single hop networks. In such protocols, a special node called the relay node helps deliver frames from a source to a destination. The performance benefits of cooperation ...
    • Digital subcarrier optical networks (DSONs) 

      Huang, Wanjun, 1978-; Razo, Miguel; Tacca, Marco, 1973-; Fumagalli, Andrea; Hui, Rongqing (The University of Texas at Dallas, 2013-06-18)
      Energy efficient networks are increasingly becoming a desirable feature in today’s market. Both the number of users and the average amount of data traffic generated by each user continue to grow, requiring more powerful ...
    • Finding a simple path with multiple must-include nodes 

      Vardhan, Hars; Billenahalli, Shreejith, 1982-; Huang, Wanjun, 1978-; Razo, Miguel; Sivasankaran, Arularasi; Tang, Limin, 1977-; Monti, Paolo, 1973-; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-05-23)
      This document presents an algorithm to find a simple path in the given network with multiple must-include nodes. The problem of finding a simple path with only one must-include node can be solved in polynomial time using ...
    • High-speed self-configuring networks based on cost-effective plug-and-play optical (PPO) nodes 

      Fumagalli, Andrae; Hui, Rongqing; Maloberti, F. (Franco); Gregori, Stefano; Cerutti, Isabella, 1973-; Tacca, Marco, 1973- (The University of Texas at Dallas, 2013-06-18)
      This proposal visualizes a future ad-hoc multi-gigabit network infrastructure connecting a very large number of inexpensive optical nodes. Such nodes will look like today’s Fast Ethernet switches, providing however, 2-3 ...
    • A link state advertisement (LSA) protocol for optical transparency islands 

      Das, Shovan, 1979-; Tabrizi, Reza Roshani, 1976-; Monti, Paolo, 1973-; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-06-18)
      Plug and play optical (PPO) nodes can be used to ease the deployment of optical networks. Once plugged, PPO nodes provide all-optical circuits between client nodes to alleviate the electronic processing bottleneck of high ...
    • MAGIC: Mobile Auxiliary Gateways Improve Connectivity of wireless sensor networks 

      Fumagalli, Andrea; Maloberti, F. (Franco); Nosratinia, A.; Panahi, I. M.; Saquib, M.; Tacca, Marco, 1973- (The University of Texas at Dallas, 2013-06-18)
    • Multi-rate and multi-hop optical carriers in WDM ring 

      Cerutti, Isabella, 1973-; Fumagalli, Andrea; Tacca, Marco, 1973-; Lardies, Ana; Jagannathan, Rajesh Shanmugavel, 1971- (The University of Texas at Dallas, 2013-04-18)
      Transparency of the optical layer offers the possibility to design a network that operates at varying transmission bit rates. While variable bit rate interfaces are being tested and will soon provide the possibility to ...
    • Optimized transmission power levels in a cooperative ARQ protocol for microwave recharged wireless sensors 

      Monti, Paolo, 1973; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-06-18)
      The Generic Autonomous Platform for Sensor Systems, or GAP4S, is a maintenance-free wireless sensor network in which the sensor node battery does not need to be replaced. Power is delivered to the sensor node via a microwave ...
    • The PlaNet-PTN module: a single layer design tool for packet transport networks 

      Razo, Miguel; Litovsky, Arie; Huang, Wanjun, 1978-; Sivasankaran, Arularasi; Tang, Limin, 1977-; Vardhan, Hars; Tacca, Marco, 1973-; Fumagalli, Andrea; Monti, Paolo, 1973- (The University of Texas at Dallas, 2013-05-23)
      PlaNet is a multilayer network planning tool developed at the University of Texas at Dallas. This paper illustrates some of the features of PlaNet-PTN, one of the modules available in the PlaNet tool. PlaNet-PTN can be ...
    • Plug and play optical (PPO) nodes: network functionalities and built-in fiber characterization techniques 

      Cerutti, Isabella, 1973-; Fumagalli, Andrea; Hui, Rongqing; Monti, Paolo, 1973-; Paradisi, Alberto; Tacca, Marco, 1973- (The University of Texas at Dallas, 2007-05-07)
      Plug and play optical (PPO) nodes may be used to facilitate the deployment of optical networks. PPO nodes must be able to learn about the signal propagation properties of the surrounding optical fibers and make their ...
    • A practical perspective in designing mesh networks based on 1 : N self-healing wavelength division multiplexing rings 

      Fumagalli, Andrea; Tacca, Marco, 1973-; Cerutti, Isabella, 1973-; Masetti-Placci, Francesco; Jagannathan, Rajesh Shanmugavel, 1971- (The University of Texas at Dallas, 2013-06-18)
      A fundamental task of the optical layer in modern telecommunication systems consists of providing a fast protection mechanism against possible faults in the network. A particularly attractive protection technique in the ...
    • A queueing model for PCEP (Path Computation Element Protocol) 

      Yu, Juanjuan, 1978-; He, Yue; Wu, Kai; Tacca, Marco, 1973-; Fumagalli, Andrea; Vasseur, Jean-Phillippe (The University of Texas at Dallas, 2013-06-18)
      Path computation elements (PCE’s) are used to compute end-to-end paths across multiple areas. Multiple PCE’s may be dedicated to each area to provide sufficient path computation capacity and redundancy. An open problem is ...
    • Reconfigurable optical networks: a cross layer approach 

      Roshani-Tabrizi, Reza, 1976-; Monti, Paolo, 1973-; Tacca, Marco, 1973-; Fumagalli, Andrea (The University of Texas at Dallas, 2013-05-24)
      This paper presents the Pruning with Memory (PWM) algorithm, which computes a cross layer optimal reconfiguration sequence in reconfigurable IP/MPLS over optical networks.
    • A scalable wavelength assignment algorithm using minimal number of wavelength converters in resilient WDM networks 

      Razo, Miguel; Billenahalli, Shreejith; Huang, Wanjun, 1978-; Sivasankaran, Arularasi; Tang, Limin, 1977-; Vardhan, Hars; Tacca, Marco, 1973-; Fumagalli, Andrea; Monti, Paolo, 1973- (The University of Texas at Dallas, 2013-06-18)
      Careful wavelength assignment (WA) to support lambda services is necessary to reduce the total number of wavelength converters (WCs), which are required every time the wavelength continuity constraint cannot be met in ...