'Channel utilization' diaporamas de présentation

Chapter 5

Chapter 5. The Medium Access Sublayer. The Medium Access Layer. 5.1 Channel Allocation problem - Static and dynamic channel allocation in LANs & MANs 5.2 Multiple Access Protocols - ALOHA, CSMA, CSMA/CD, Collision-free protocols, Limited-contention protocols, Wireless LAN protocols

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CHAPTER 4 THE MEDIUM ACCESS CONTROL SUBLAYER ( ??????)

CHAPTER 4 THE MEDIUM ACCESS CONTROL SUBLAYER ( ??????). The channel allocation problem Multiple access protocols 802.3: Ethernet 802.11: Wireless LANs 802.15: Bluetooth 802.16: Broadband wireless Data link layer switching. THE CHANNEL ALLOCATION PROBLEM. Two types of network:

1.58k views • 131 slides

Week 8 Lectures

Week 8 Lectures. MAC Layer in WSNs. Outline. Introduction to MAC MAC attributes and trade-offs Scheduled MAC protocols Contention-based MAC protocols Case studies Summary. Introduction to MAC. The role of medium access control (MAC)

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Power Saving and Power Management in WiFi and Bluetooth Networks

Power Saving and Power Management in WiFi and Bluetooth Networks. Prof. Yu-Chee Tseng Dept. of Comp. Sci. & Infor. Eng. National Chiao-Tung University ( ???? ????? ??? ). Outline. Power control:

1.09k views • 80 slides

Radio and Medium Access Control

Radio and Medium Access Control. Learning Objectives. Understand important concepts about radio signals Understand radio properties of WSNs Understand schedule-based medium access protocols in WSNs Understand contention-based medium access protocols in WSNs Understand S-MAC, B-MAC, and X-MAC.

763 views • 65 slides

Network Performance Definitions and Analysis

APRICOT 2010 Kuala Lumpur, Malaysia. Network Performance Definitions and Analysis. Network Performance Metrics. Planning performance management Metrics Network Systems Services Definitions. Planning. What's the intention? Baselining, Troubleshooting, Planning growth

833 views • 61 slides

Registry Operations Curriculum Network Performance Definitions and Analysis

Hervey Allen Carlos Vicente Network Startup Resource Center. Registry Operations Curriculum Network Performance Definitions and Analysis. Network Performance Metrics. Planning performance management Metrics Network Systems Services Definitions. Planning. What's the intention?

748 views • 61 slides

Network Performance Definitions & Analysis

Network Performance Definitions & Analysis. Unix/IP Preparation Course May 23, 2010 Kigali, Rwanda hervey@nsrc.org. Network Performance Metrics. Planning performance management Metrics Network Systems Services Definitions. Planning. What's the intention?

794 views • 60 slides

Flow Control

Flow Control. A. Jantsch / I. Sander / Z. Lu zhonghai@kth.se. Outline. Flow control basics What is flow control? Resources and allocation units Network-level flow control Bufferless flow control Buffered flow control Link-level (switch-to-switch) flow control. Flow Control.

1.3k views • 56 slides

Performance Definitions and Measurement

System Administration and IP Services. Performance Definitions and Measurement. Metrics. Network performance metrics Channel capacity, nominal & effective Channel utilization Delay and jitter Packet loss and errors. Nominal Channel Capacity.

572 views • 42 slides

CMPE 257: Wireless and Mobile Networking

CMPE 257: Wireless and Mobile Networking. Spring 2005 Topology/Power Management. Announcements. Homework 1. Midterm on 05.10. MAC. Unicast routing. Multicast routing. Today. Topology and power management. Topology management as power management strategy.

510 views • 39 slides

B-MAC: Versatile Low Power Media Access for Wireless Sensor Networks

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Interactive Multimedia Satellite Access Communications

Interactive Multimedia Satellite Access Communications. Tho Le-Ngoc, McGill University Victor Leung, University of British Columbia Peter Takats and Peter Garland, EMS Technologies. Appear in IEEE Communications Magazine, July 2003 Reviewed by Huakai Zhang, 12/4/2003. Outline.

383 views • 25 slides

A Dynamic Buffer Management Scheme for End-to-end QoS Enhancement of Multi-flow Services in HSDPA

A Dynamic Buffer Management Scheme for End-to-end QoS Enhancement of Multi-flow Services in HSDPA. Suleiman Y. Yerima, Khalid Al-Begain Integrated Communications Research Centre Faculty of Advanced Technology University of Glamorgan. Outline. HSDPA overview TSP queuing and BM schemes

416 views • 24 slides

Understanding Congestion in IEEE 802.11b Wireless Network

Understanding Congestion in IEEE 802.11b Wireless Network. Amit P.jardosh Krihna Romashandran Kevin C.Almeroth Elizabith M.Royer University of California Santa Barbara. Introduction The occurrence of high density nodes with a single collision domain in W.N result in congestion . problems:

376 views • 23 slides

UCAN: A Unified Cellular and Ad-Hoc Network Architecture

UCAN: A Unified Cellular and Ad-Hoc Network Architecture. Haiyun Luo Ramachandran Ramjee Prasun Sinha, Li Erran Li, Songwu Lu. Wireless WAN v.s. LAN. 1xEV-DO (HDR) Large coverage Low data rate Infrastructure only IEEE 802.11 Small coverage High data rate Ad-hoc capable. Base Station.

366 views • 22 slides

Paper-1: Effective Channel Exploitation in IEEE 802.16j Networks for Maritime Communications

Paper-1: Effective Channel Exploitation in IEEE 802.16j Networks for Maritime Communications. Authors: Hanwu WANG*, Weijia JIA *, Geyong MIN ** *City University of Hongkong **Bradford University presented by Ikhsan Putra Kurniawan. About Paper. This paper appeared in:. Content .

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GERAN Voice and Data Multiplexing (OS2) Proposal

GERAN Voice and Data Multiplexing (OS2) Proposal. Source: AT&T, Ericsson For: 3GPP TSG GERAN Adhoc #2 9 -13 October 2000 Munich, Germany. Introduction. Operational Scenario 2 is a fundamental service requirement for R00

285 views • 14 slides

Dynamic Load Balancing

For IEEE 802.11 Wireless LAN. Dynamic Load Balancing. Outline. Problem Description AP-station association Dynamic Load Balancing Channel Auto-selection Association Migration Practical Concern. Problem Description.

259 views • 8 slides