'Medium access control' diaporamas de présentation

Wireless Sensor Networks MAC Layer

Wireless Sensor Networks MAC Layer. Professor Jack Stankovic University of Virginia 2006. What is a MAC Protocol. Medium Access Control Coordinate actions over a shared channel (basic theme of many solutions) Test channel to see if busy If busy, wait If not busy, transmit

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Lecture 4: Medium Access Control

Lecture 4: Medium Access Control. CS 3035/GZ01: Networked Systems Kyle Jamieson Department of Computer Science University College London. Structure of 3035/GZ01. Start with architecture Protocols: How to structure communication Layering: How to leverage modularity

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IE 419/519 Wireless Networks

IE 419/519 Wireless Networks. Lecture Notes #3 IEEE 802.11 Wireless LAN Standard Part #1. Basic Concepts in Protocol Architectures. Introduction. What is a protocol? An agreed-upon format for transmitting data between two devices Key Features Concerns the format of the data blocks

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MPCP (Multipoint Control protocol)

MPCP (Multipoint Control protocol). Professor : Ho-Ting Wu Speaker : ???. Outline. Overview EPON MPCP Summary. Outline. Overview EPON MPCP Summary. PON (Passive Optical Network ). Features of a passive optical network:

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Wireless Embedded Systems (0120442x) Medium Access Control

Wireless Embedded Systems (0120442x) Medium Access Control. Chaiporn Jaikaeo chaiporn.j@ku.ac.th Department of Computer Engineering Kasetsart University. Materials taken from lecture slides by Karl and Willig. Overview. Principal options and difficulties Contention-based protocols

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IEEE 802.11b and 802.11a PHY Layer Specifications

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Wireless Networking Understanding the departure from wired networks, Case study: IEEE 802.11 (WiFi)

Wireless Networking Understanding the departure from wired networks, Case study: IEEE 802.11 (WiFi). Many Motivations for Wireless. Unrestricted mobility / deployability Unplugged from power outlet Significantly lower cost No cable layout, service provision Low maintenance Ease

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Data and Computer Communications

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IEEE 802.11 Wireless LAN Standard

IEEE 802.11 Wireless LAN Standard. Chapter 14. IEEE 802 Protocol Layers. Protocol Architecture. Functions of physical layer: Encoding/decoding of signals Preamble generation/removal (for synchronization) Bit transmission/reception Includes specification of the transmission medium.

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Self-Organization in Autonomous Sensor/Actuator Networks [SelfOrg]

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802-11 Proposed PAR Review March 2014

802-11 Proposed PAR Review March 2014. Authors:. Date: 2014-03-21. Abstract. PARS under consideration: Mar 16 - 21, 2014, Beijing, China:

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Daji Qiao , Member, IEEE, Sunghyun Choi, Senior Member, IEEE, and Kang G. Shin, Fellow, IEEE

Interference Analysis and Transmit Power Control in IEEE 802.11a/h Wireless LANs IEEE/ACM TRANSACTIONS ON NETWORKING, VOL. 15, NO. 5, OCTOBER 2007. Daji Qiao , Member, IEEE, Sunghyun Choi, Senior Member, IEEE, and Kang G. Shin, Fellow, IEEE Professor: Ming- Shyan Wang

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WiFi MAC Protocol

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Ad Hoc Wireless Routing

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600.647 Advanced Topics in Wireless Networks

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Wireless Local Area Networks

Wireless Local Area Networks. By Edmund Gean August 2, 2000. Why Wireless?. extension of wired LAN alternative for a wired LAN ease of installation mobile users. Wireless Terminology. WLAN 802.11 basic service set (BSS, cell) DSSS vs FSSS

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Sequential and Concurrent events

Sequential and Concurrent events. Sequential = Totally ordered in time. Total ordering is feasible in a single process that has only one clock . This is not true in a distributed system. Two issues are important here: How to synchronize physical clocks ? (We already discussed this)

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The data link layer

The data link layer. Skills : none IT concepts : LAN, medium access, Ethernet and WiFi protocols, why standards win. This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. . Internet concepts Applications Technology (communication)

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Bluetooth Security

Bluetooth Security. Ben Cumber Kyle Swenson. Overview. Introduction to Bluetooth Protocol stack Profiles Proliferation and Applications Security Past attacks Current state of the art Known vulnerabilities Examples; Demonstration Future attacks Hardening Options: Mitigating the Risk

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