An Evaluation of Weak State Mechanism Design for Indirection in Dynamic Networks

3 Utku Günay Acer Alhussein Abouzeid Shivkumar Kalyanaraman 2009 An Evaluation of Weak State Mechanism Design for Indirection in Dynamic Networks The 28th Conference on Computer Communications (INFOCOM) Rio de Janerio, Brazil 19/04/2009 3 Utku Günay Acer Shivkumar Kalyanaraman Alhussein A. Abouzeid 2007 Weak State Routing for Large Scale Dynamic Networks The Thirteenth Annual International Conference on Mobile Computing and Networking (MOBICOM) Montréal, Québec, Canada ACM Press 09/09/2007 978-1-59593-681-3 <a href="http://www.youradultcams.com/">live web cams</a> <a href="http://blog.youradultcams.com/">homemade sex cams videos</a> 3 Vijaynarayanan Subramanian K.K. Ramakrishnan Shivkumar Kalyanaraman 2007 Disruption-Tolerant Link-level Mechanisms for Extreme Wireless Network Environments THE SECOND IEEE/Create-Net/ICST International Conference on COMmunication System softWAre and MiddlewaRE (COMSWARE) Bangalore, India 07/01/2007 Wireless links pose significant challenges in terms of achievable goodput and residual loss-rate. Our recent enhancements, called LT-TCP make TCP loss-tolerant in heavy/bursty erasure environments. Link-level protocols mitigate these problems by using a combination of FEC and ARQ but are insufficient when the channel experiences disruptions. When the underlying source of loss is interference (e.g., 802.11 environments), {\sc mac}-level mechanisms misinterpret interference as noise leading to poor scheduling (e.g., capture effects) and limit the benefit of transport layer mitigation efforts. We propose enhancements to link-level protocols that enable survival during disruptions. We explore an adaptive link-level strategy to export a small residual loss rate and bounded latency under high loss/ disruption conditions. We evaluate the proposed link-level enhancements, showing that the combination with LT-TCP helps achieve significant end-to-end performance gains. We also demonstrate the trade-off between reduced link layer residual loss (by increasing ARQ persistence) and transport layer timeouts. http://poisson.ecse.rpi.edu/~vijay/web/work/comwsare.pdf 3 Vijaynarayanan Subramanian Shivkumar Kalyanaraman K.K. Ramakrishnan 2007 Hybrid Packet FEC and Retransmission-based Erasure Recovery Mechanisms (HARQ) for Lossy Networks: Analysis and Design Proceedings of WIreless Systems: Advanced Research and Development (WISARD) Bangalore, India 06/01/2007 With increasing dependence on wireless networks as an integral part of the communication infrastructure, it is critical that data link and transport layer protocols perform reasonably under potentially severe lossy conditions. A key strategy is to use Hybrid ARQ (HARQ) with erasure codes (a.k.a. Forward Error Correction or FEC) sent both proactively and reactively in response to feedback about dynamic loss statistics. A challenge is to design HARQ to satisfy multiple objectives such as high goodput, low latency and negligible residual loss rate. In this paper, we analyze the performance benefits and trade-offs of these reliability strategies (Hybrid ARQ+FEC). We derive expressions for the expected goodput (and overhead in terms of FEC wastage), latency, and residual loss for a given raw erasure loss process (e.g. uniform and bursty loss models). We show how the analysis can be used to explain and provide specialized design guidance for link-layer HARQ that is subject to tight delay constraints and a recently designed transport layer HARQ scheme (called Loss-Tolerant TCP). We validate our analysis by comparing the predictions with values obtained from simulations performed on the link and transport layer HARQ strategies with ns-2. We believe that such an analysis could also have value for other adaptive protocols using network coding and incremental redundancy techniques. http://poisson.ecse.rpi.edu/~vijay/web/work/wisard.pdf 3 Hsin-Yi Shen, Shivkumar Kalyanaraman 2007 Asynchronous Cooperative MIMO Communication In Proceedings of 5th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WIOPT) Limassol, Cyprus 04/16/2007 We consider a cluster-based cooperative transmission scheme where the source node and destination node form clusters for transmission. Instead of using perfect synchronization technique, we assume the cooperative transmission is asynchronous. Each member in transmitting cluster relays signal to the receiving cluster after obtaining information from source node. A general decision feedback equalizer (DFE) is used in the receiving cluster members to equalize the received MISO signal and detect as soft symbols. The receiving cluster members send the softdecision outputs to the destination node. Thus, the decision node combines the soft-decision outputs and makes hard-decision detection for the transmitted information. The performance of proposed system is shown and compared with conventional MIMO system. Major factors for system performance is discussed. The over-sampling rate plays an important role in system performance. We also present a simple capacity analysis for proposed cooperative transmission system. The capacity ratio between cooperative MIMO system and direct transmission (SISO) system is also presented and compared to the capacity ratio of conventional MIMO system and direct transmission (SISO) system. We also extend the analysis to heterogeneous network and show the capacity ratio. <a href="http://www.youradultcams.com/">asian shemales girls milfs livecams</a> <a href="http://blog.youradultcams.com/">nude teen girls masturbating videos</a> http://www.ecse.rpi.edu/Homepages/shivkuma/research/papers/WiOPT07_hsinyi.pdf 3 Yufeng Shan, John. W. Woods and Shivkumar Kalyanaraman 2007 Fine grain adaptive FEC over wireless networks IEEE international conference on image processing <a href="http://www.youradultcams.com/">adult web cam live chat</a> <a href="http://blog.youradultcams.com/">amateur sexy web cam movies</a> <a href="http://www.5isex.com/webcam.html">AMATEUR TEEN WEBCAM</a> <a href="http://www.5isex.com/live-sex-cam.html">Big Boob Blonde Webcam Girl</a> <a href="http://www.5isex.com/web-cam-girl.html">Cutie Redhead Teen nude webcam</a> <a href="http://www.5isex.com/free-web-cam.html"> asian webcam babe big tits</a> <a href="http://www.5isex.com/live-cam.html">Nude Ebony Webcam</a> <a href="http://www.5isex.com/web-cam-chat.html"> Latina Cam Network </a> <a href="http://www.5isex.com/sex-cam.html"> Horny MILF - Housewife Cam</a> <a href="http://www.5isex.com/gay-web-cam.html">gay webcams</a> <a href="http://www.5isex.com/webcamsponsor.html">cam Sponsors</a> <a href="http://www.5isex.com/trannywebcam.html">tranny cams</a> <a href="http://www.5isex.com">LiVe SEX On Cam</a> 3 Bow-Nan Cheng Murat Yuksel Shivkumar Kalyanaraman 2006 Orthogonal Rendezvous Routing Protocol for Wireless Mesh Networks In Proceedings of IEEE International Conference on Network Protocols (ICNP) Santa Barbara, CA 11/12/2006 Wireless Mesh Networks, Directional Routing, Free Space Optics Routing in multi-hop wireless networks involves the indirection from a persistent name (or ID) to a locator. Concepts such as coordinate space embedding help reduce the number and dynamism complexity of bindings and state needed for this indirection. Routing protocols which do not use such concepts often tend to flood packets during route discovery or dissemination, and hence have limited scalability. In this paper, we introduce Orthogonal Rendezvous Routing Protocol (ORRP) for meshed wireless networks. ORRP is a lightweight, but scalable routing protocol utilizing directional communications (such as directional antennas or free-space-optical transceivers) to relax information requirements such as coordinate space embedding and node localization. The ORRP source and ORRP destination send route discovery and route dissemination packets respectively in locally-chosen orthogonal directions. Connectivity happens when these paths intersect (i.e. rendezvous). We show that ORRP achieves connectivity with high probability even in sparse networks with voids. ORRP scales well without imposing GHT-like graph structures (eg: trees, rings, torus etc). The total state information required is O(N^3/2) for N-node networks, and the state is uniformly distributed. ORRP does not resort to flooding either in route discovery or dissemination. The price paid by ORRP is suboptimality in terms of path stretch compared to the shortest path; however we characterize the average penalty and find that it is not severe. http://www.ecse.rpi.edu/Homepages/shivkuma/research/papers/ICNP2006.pdf 3 Vijaynarayanan Subramanian Shivkumar Kalyanaraman K.K. Ramakrishnan 2006 An End-to-End Transport Protocol for Extreme Wireless Network Environments In Proceedings of MILCOM 06, IEEE Military Communications Conference Washington D.C, USA 10/23/2006 As the Joint forces move towards the vision of network-centric warfare (NCW), it is extremely important that the network services be reliable and dependable, even under degraded network conditions. Tactical wireless and satellite based networks are prone to disruptions over multiple time-scales: bursty bit errors and packet loss (small time-scale), interference, jamming and capture effects (medium time-scale) and long-term path disruptions due to persistent channel impairments and mobility (large time-scale). TCP does not work well over such channels because it misinterprets erasure for congestion, and its reliability mechanisms become untargeted when there are disruptions. Large round-trip-times (RTT) as in satellite networks, and uncoordinated optimizations at multiple layers (PHY, MAC and transport) lead to poor performance. In this paper we describe LT-TCP, a robust transport protocol (improving TCP) that is applicable for extreme wireless environments including a mix of multi-hop ad-hoc meshed networks (MANETs), airborne networks and satellite networks. LT-TCP uses an adaptive, end-to-end hybrid ARQ/FEC reliability strategy and ECN for incipient congestion detection. The novelty lies in our adaptive methods that respond to learning about the underlying random packet loss and disruption process. The overhead of FEC or smaller segments is imposed just-in-time and targeted to maximize the performance benefit (measured as improved goodput and timeout reduction) even when the path characteristics are uncertain. We show that LT-TCP substantially improves performance over regular TCP even for packet loss rates of up to 40\% - 50\%, thus substantially extending the dynamic performance range of TCP over lossy wireless networks. http://poisson.ecse.rpi.edu/~vijay/web/work/milcom.pdf 0 K. Chandrayana, S. Ramakrishnan, B. Sikdar and S. Kalyanaraman 2006 On Randomizing the Sending Times in TCP and other Window Based Algorithms Computer Networks 50 02/2006 3 Su Yi, Yufeng Shan, Shivkumar Kalyanaraman and Babak Azimi-Sadjadi 2006 Header error protection for multimedia data transmission in wireless AdHoc networks IEEE International Conference on Image Processing <a href="http://www.youradultcams.com/">adult cams sex</a> <a href="http://blog.youradultcams.com/">nude amateur babes fingering</a> <a href="http://www.5isex.com/webcamsponsor.html">Webcam Sponsor</a> <a href="http://www.5isex.com/webcam.html">Teen live sex cam</a> <a href="http://www.webcam2cam.com/">cam girls home alone</a> 3 Bow-Nan Cheng Max Klein Shivkumar Kalyanaraman 2005 A Geography-Aware Scalable Community Wireless Network Test Bed Proceedings of IFIP/IEEE Testbeds and Research Infrastructures for the Development of Networks and Communities (TRIDENTCOM) Trento, Italy 02/23/2005 test bed, wireless mesh networks Wireless mesh networks have increasingly become an object of interest in recent years as a strong alternative to purely wired infrastructure networks and purely mobile wireless networks. Given the challenges that have arisen in construction, deployment, and maintenance of wireless mesh networks, we outline a broad experimental research program in the area of medium-to-large scale community wireless networks. Our research is conducted in the context of an operational community network built in our test bed laboratory with continual plans to expand to the town of Troy, NY (up to hundreds of nodes in a 1-2 mile radius around RPI campus). Leveraging Global Positioning System (GPS) receivers and Geographic Distributed Addressing (GDA), a novel and intuitive addressing assignment, geographic-based forwarding algorithms such as GPSR and TBF can be easily tested and traffic engineering theories implemented in a real-world environment. Our paper documents several design considerations and contributions in implementing community wireless networks including autoconfiguration, addressing structure, and antenna characteristics among other items, in addition to describing our novel test bed lab where RF effects of distances of thousands of meters can be simulated with server, antenna, and variable attenuator clusters. <a href="http://www.youradultcams.com/">adult online sex cams</a> <a href="http://blog.youradultcams.com/">amateur webcam sex clips</a> http://www.ecse.rpi.edu/Homepages/shivkuma/research/papers/tridentcom-2005.pdf 3 Yufeng Shan, Ivan Bajic, Shivkumar Kalyanaraman, and John W. Woods 2005 Joint source-network error control coding for ccalable overlay streaming IEEE International Conference on Image Processing <a href="http://www.youradultcams.com/">live sex adult webcams</a> <a href="http://blog.youradultcams.com/">amateur homemade sex videos porn</a> 0 Yufeng Shan, Ivan V. Bajic, Shivkumar Kalyanaraman and John W. Woods 2005 Overlay multi-hop FEC scheme for video streaming Signal Processing: Image Communications 20 8 <a href="http://www.youradultcams.com/">online live webcam girls</a> <a href="http://blog.youradultcams.com/">nude amateur porn clips</a> <a href="http://www.5isex.com/webcamsponsor.html">Webcams Sponsor</a> <a href="http://www.5isex.com">Nude free cam babes</a> <a href="http://www.webcam2cam.com">teen webcam</a> 3 Yufeng Shan, Su Yi, Shivkumar Kalyanaraman and John.W. Woods 2005 Two-Stage FEC scheme for scalable video transmission over wireless networks SPIE Communications/ITCom, Multimedia Systems and Applications <a href="http://www.youradultcams.com/">amateur porn cams directory</a> <a href="http://blog.youradultcams.com/">amateur nude girls masturbating</a> <a href="http://www.5isex.com/">free sex nude webcams</a> 3 Yufeng Shan, Ivan Bajic, Shivkumar Kalyanaraman, and John W. Woods 2004 Overlay multi-hop FEC scheme for video streaming over peer-to-peer networks IEEE International Conference on Image Processing <a href="http://www.youradultcams.com/">dating webcam feeds</a> <a href="http://blog.youradultcams.com/">naked webcam girls sex clips</a> <a href="http://www.5isex.com/">naked webcam video chat</a> <a href="http://www.webcam2cam.com/">webcam teens</a> 0 B. Sikdar, S. Kalyanaraman and K. S. Vastola 2003 Analytic Models for the Latency and Steady-State Throughput of TCP Tahoe, Reno and SACK IEEE/ACM Transactions on Networking 11 6 12/2003 3 Yufeng Shan and Shivkumar Kalyanaraman 2003 Hybrid video downloading/streaming over peer-to-peer networks IEEE International Conference on Multimedia & Expo (ICME) <a href="http://www.youradultcams.com/">adult online sex cams</a> <a href="http://blog.youradultcams.com/">sexy girls livecam clips</a> 3 B. Sikdar, K. Chandrayana, K. S. Vastola and S. Kalyanaraman 2002 On Reducing the Degree of Second-Order Scaling in Network Traffic Proceedings of IEEE GLOBECOM Taipei, Taiwan 11/2002 3 K. Chandrayana, B. Sikdar and S. Kalyanaraman 2002 Comparative Study of TCP Compatible Binomial Congestion Control Schemes Proceedings of IEEE HPSR Kobe, Japan 05/2002 3 B. Sikdar, K. Chandrayana, K. S. Vastola and S. Kalyanaraman 2002 Queue management algorithms and network traffic self-similarity Proceedings of IEEE HPSR Kobe, Japan 05/2002 3 B. Sikdar, S. Kalyanaraman and K. S. Vastola 2001 Analytic models and comparative study of the latency and steady-state throughput of TCP Tahoe, Reno and SACK Proceedings of IEEE GLOBECOM San Antonio, TX 11/2001 0 B. Sikdar, S. Kalyanaraman and K. S. Vastola 2001 An Integrated Model for the Latency and Steady-State Throughput of TCP Connections Performance Evaluation 46 2-3 09/2001 3 T. Ye, D. Harrison, B. Mo, B. Sikdar, H. T. Kaur, S. Kalyanaraman, B. Szymanski and K. S. Vastola 2001 Network Management and Control Using Collaborative On-line Simulation Proceedings of IEEE ICC Helsinki, Finland 06/2001 3 K. Chandrayana, B. Sikdar and S. Kalyanaraman 2001 Scalable configuration of RED queue parameters Proceedings of IEEE HPSR Dallas, TX 05/2001 <a href="http://www.youradultcams.com/">free livesex cams</a> <a href="http://blog.youradultcams.com/">sexy teen cam girls</a> <a href="http://www.freepornempire.net/">amateur girl pussy fucked</a> 3 B. Sikdar, S. Kalyanaraman and K. S. Vastola 2001 TCP Reno with Random losses: Latency, Throughput and Sensitivity Analysis Proceedings of IEEE IPCCC Phoenix, AZ 04/2001 <a href="http://www.youradultcams.com/">live sex webcams</a> <a href="http://blog.youradultcams.com/">amateur nude girls</a> <a href="http://www.freepornempire.net/">homemade xxx videos</a> 3 B. Sikdar, S. Kalyanaraman and K. S. Vastola 2000 An Integrated Model for the Latency and Steady State Throughput of TCP Connections Proceedings of IFIP Symposium on Advanced Performance Modeling Orlando, FL 11/2000 15 S. Kalyanaraman, B. Szymanski, K. Vastola, Y. Tao, D. Harrison, B. Mo, B. Sikdar and J. Jiang 1999 Network Management and control using Collaborative On-line Simulation 12/1999 U.S. Provisional Patent S/N 60/170, 896