'Distributed coordination function' diaporamas de présentation

A Deferral Set Framework of Multi Hop Wireless Ad Hoc Networks

A Deferral Set Framework of Multi Hop Wireless Ad Hoc Networks. Presenting By: Yue Fang Advisor: A. Bruce McDonald The Reconfigurable Wireless Networking and Communications Laboratory (RWIN Lab) Department of Electrical and Computer Engineering

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MAC Research Highlight

524 views • 42 slides

Wireless LAN Technology

Wireless LAN Technology. Wireless LANs. A wireless LAN use s wireless transmission medium. Used to have high prices, low data rates, occupational safety concerns, and licensing requirements. Problems have been addressed. Popularity of wireless LANs has grown rapidly.

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Introduction to IEEE 802.11 Wireless LAN Standard

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Chapter 8- 802.11 Medium Access

Chapter 8- 802.11 Medium Access. CSMA/CA vs CSMA/CD DCF PCF HCF BA WMM. Exam Essentials. Understand the similarities and differences between CSMA/CA and CSMA/CD. Understand both access methods and know what makes them similar and what makes them different.

767 views • 33 slides

Chapter 8- 802.11 Medium Access

Chapter 8- 802.11 Medium Access. CSMA/CA vs CSMA/CD DCF PCF HCF BA WMM. Exam Essentials. Understand the similarities and differences between CSMA/CA and CSMA/CD. Understand both access methods and know what makes them similar and what makes them different.

547 views • 33 slides

Chapter 8- 802.11 Medium Access

Chapter 8- 802.11 Medium Access. CSMA/CA vs CSMA/CD DCF PCF HCF BA WMM. Exam Essentials. Understand the similarities and differences between CSMA/CA and CSMA/CD. Understand both access methods and know what makes them similar and what makes them different.

379 views • 33 slides

Chapter 8

802.11 Medium Access. Chapter 8. Outline. CSMA/CA vs. CSMA/CD Distributed Coordination Function (DCF) Point Coordination Function (PCF ) Hybrid Coordination Function (HCF) Block acknowledgment (BA) Wi-Fi Multimedia (WMM. CSMA/CA vs. CSMA/CD.

859 views • 30 slides

WiFi Models

WiFi Models. EE 228A Lecture 5. Teresa Tung and Jean Walrand Department of EECS University of California at Berkeley. Overview: Contents. WiFi models via an example of QoS over 802.11 Overview 802.11 DCF Extension for 802.11e EDCF. Overview: Scenario. 802.11 Network

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Cross-Layer Wireless Multimedia

Cross-Layer Wireless Multimedia. Presented by Scott Kristjanson CMPT-820 Multimedia Systems Instructor: Dr. Mohamed Hefeeda . Outline. Challenges and requirements for wireless transmission of multimedia Need for cross-layer optimization

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802.11 Opersating Mode

802.11 Opersating Mode. DCF: distributed coordination function basic access mode, CSMA/CA, RTS/CTS, Backoff Algorithm PCF: Point coordination function Centralized MAC Support collision free and time bounded service. RTS/CTS Handshake.

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MAC Modification Possible Technical Targets for 11s Mesh Network

MAC Modification Possible Technical Targets for 11s Mesh Network. Akira Yamada (NTT DoCoMo) Yoichi Matsumoto (NTT DoCoMo) Hidenori Aoki (NTT DoCoMo) yamadaakir@nttdocomo.co.jp (yamadaakira@nifty.com) matsumotoyou@nttdocomo.co.jp aokihid@nttdocomo.co.jp. Background.

132 views • 13 slides

MAC Modification Possible Technical Targets for 11s Mesh Network

MAC Modification Possible Technical Targets for 11s Mesh Network. Akira Yamada (NTT DoCoMo) Yoichi Matsumoto (NTT DoCoMo) Hidenori Aoki (NTT DoCoMo) yamadaakir@nttdocomo.co.jp (yamadaakira@nifty.com) matsumotoyou@nttdocomo.co.jp aokihid@nttdocomo.co.jp. Background.

141 views • 13 slides

A Virtual Collision Mechanism for IEEE 802.11 DCF

A Virtual Collision Mechanism for IEEE 802.11 DCF. Authors:. Date: 2013-05-14. CSMA/CA Mechanism in IEEE 802.11 DCF.

293 views • 12 slides

Energy-efficient Wireless 802.11 MAC Protocol

Serhat Kucukomeroglu & Weng Liong Low. Energy-efficient Wireless 802.11 MAC Protocol. CS 603 - Wireless Communications & Networks Summer II 2003 Dr. Ajay Gupta. The IEEE 802.11 MAC protocol based on CSMA/CA 1)Physical carrier sense (sender) 2)virtual carrier sense (receiver)

189 views • 9 slides