'Multi hop' presentation slideshows

Wireless Mesh Networks

Wireless Mesh Networks. Paul A.S. Ward Shoshin Distributed Systems Group University of Waterloo pasward@ccng.uwaterloo.ca. Outline. Introduction Modeling and Capacity Multi-radio and Multi-channel Systems Congestion Control, Fairness, Load Balancing and Quality of Service

790 views • 62 slides

Oveview of Wireless Sensor Networks KD Kang

Oveview of Wireless Sensor Networks KD Kang. Overview. What is a sensor network? Sensing Microsensors Constraints, Problems, and Design Goals Overview of Research Issues and Challenges. Applications. Applications. Interface between Physical and Digital Worlds Many applications

613 views • 51 slides

The Meraka Indoor wireless mesh test bed A new multi hop routing benchmarking tool

The Meraka Indoor wireless mesh test bed A new multi hop routing benchmarking tool. David Johnson Senior Researcher Wireless Africa Programme Meraka CSIR. 450 million rural people in Africa are isolated from the rest of the world. Connect them all by 2017. Sound crazy?.

579 views • 48 slides

753 views • 45 slides

Architecture and Evaluation of an Unplanned 802.11b Mesh Network

Architecture and Evaluation of an Unplanned 802.11b Mesh Network. John Bicket, Daniel Aguayo, Sanjit Biswas, Robert Morris. Two approaches to constructing community networks are common. Multi-hop chosen locations directional an high-quality radio linkstennas

531 views • 39 slides

Architecture and Evaluation of an Unplanned 802.11b Mesh Network

Architecture and Evaluation of an Unplanned 802.11b Mesh Network. John Bicket, Daniel Aguayo, Sanjit Biswas, and Robert Morris MIT Computer Science and Artificial Intelligence Lab Presented by Anuradha Kadam February 6, 2007. Outline. Introduction Roofnet Design Evaluation Network Use

529 views • 37 slides

Bernhard H. Walke, Ian Herwono, Ralf Pabst, Daniel Schultz Aachen University,

486 views • 35 slides

You- Chiun Wang, Member, IEEE, Yao-Yu Hsieh, and Yu- Chee Tseng, Senior Member, IEEE

Multi-Resolution Spatial and Temporal Coding in a Wireless Sensor Network for Long-Term Monitoring Applications. You- Chiun Wang, Member, IEEE, Yao-Yu Hsieh, and Yu- Chee Tseng, Senior Member, IEEE. IEEE TRANSACTIONS ON COMPUTERS, TC-2008-08-0420. Outline. Introduction

801 views • 34 slides

Multicast + Network Coding in Ad Hoc Networks

Multicast + Network Coding in Ad Hoc Networks. CS 218 Fall 2008. Routing vs Network Coding. y 1. y 1. f 1 ( y 1 ,y 2 ,y 3 ). y 1. y 2. f 2 ( y 1 ,y 2 ,y 3 ). y 3. y 3. y 3. x. B. C. A. y. B. C. A. x ? y. B. C. A. B. C. A. Benefit of Network Coding. y. x. B. C. A.

486 views • 34 slides

An Adaptive Energy-Efficient MAC Protocol for Wireless Sensor Networks

An Adaptive Energy-Efficient MAC Protocol for Wireless Sensor Networks. Tijs van Dam Koen Langendoen Presenter: Michael Curcio. ACM SenSys 2003. Sensor Networks. Low message rate Insensitive to latency Low processing power and memory capacity Lots of redundancy Often battery operated!.

564 views • 32 slides

Simulations in wireless sensor and ad hoc networks

426 views • 32 slides

DRAND: Distributed Randomized TDMA Scheduling for Wireless Ad-Hoc Networks

DRAND: Distributed Randomized TDMA Scheduling for Wireless Ad-Hoc Networks. Injong Rhee (with Ajit Warrier, Jeongki Min, Lisong Xu) Department of Computer Science North Carolina State University. A. C. B. Static Channel Assignment Problem (for stationary networks).

464 views • 29 slides

Time Synchronization

Time Synchronization. Murat Demirbas SUNY Buffalo. Need for TimeSync. Typical purpose of sensor networks: collect sensor data, log to database and correlate with time, location, etc.

428 views • 27 slides

Some Security Challenges for Mesh Networks

Some Security Challenges for Mesh Networks. Jean-Pierre Hubaux EPFL Switzerland Joint work with Imad Aad, Naouel Ben Salem, Levente Buttyan, Srdjan Capkun, Markus Jakobsson, and Maxim Raya Funded by the MICS/Terminodes project, www.mics.org.

496 views • 25 slides

On the advantage of multi-hop extensions to IEEE 802.11 infrastructure mode

On the advantage of multi-hop extensions to IEEE 802.11 infrastructure mode. Sathya Narayanan Panasonic Pei Liu Shivendra Panwar Polytechnic University. Overview. We study the effect of using multi-hopping

339 views • 25 slides

Chapter 5: Ad Hoc Wireless Networks

Introduction Ad Hoc Wireless Networks Ad Hoc Wireless Internet. Chapter 5: Ad Hoc Wireless Networks. 0. 1. 2. 3. 4. 5. 6. 7. Advent of Ad hoc Wireless Networks.

399 views • 23 slides

Block-switched Networks: A New Paradigm for Wireless Transport

Block-switched Networks: A New Paradigm for Wireless Transport. Ming Li, Devesh Agrawal, Deepak Ganesan and Arun Venkataramani presented by zhen qin, marcel flores. Motivation. How TCP works. E2E rate control is error-prone. How TCP works. E2E retransmissions are wasteful. How TCP works.

343 views • 22 slides

Scenario di riferimento e mappa delle presentazioni

Scenario di riferimento e mappa delle presentazioni. Capitolo 4: acquisizione dei dati dal campo ( presentazione e demo 13.45-14.25). Monitoring System Architecture. Wine Transport and Distribution. Sensors used during wine transport. Wine Transport and Distribution.

319 views • 22 slides

Multi hop connections using 802.11

212 views • 14 slides

Sub-IP Mesh for LoWPAN

Nandu Kushalnagar & Gabriel Montenegro. Sub-IP Mesh for LoWPAN . LoWPAN Considerations. Adhoc multi hop meshing Proactive routing Reactive routing Routing Above IP (Orthogonally possible) Sub-IP (Allows efficient header compression, smaller route tables) Flexible routing metric

292 views • 6 slides