'Carrier sense' presentation slideshows

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)

1.22k views • 100 slides

Exploiting Antenna Capabilities in Wireless Networks

Exploiting Antenna Capabilities in Wireless Networks. Nitin Vaidya Electrical and Computer Engineering, and Coordinated Science Lab (CSL) University of Illinois at Urbana-Champaign www.crhc.uiuc.edu/wireless/. Wireless Capacity. Wireless capacity limited

897 views • 75 slides

15-744: Computer Networking

15-744: Computer Networking. L-9 Wireless. Wireless Intro. TCP on wireless links Wireless MAC Assigned reading [BPSK97] A Comparison of Mechanism for Improving TCP Performance over Wireless Links [BM09] In Defense of Wireless Carrier Sense Optional

781 views • 66 slides

Admin.

CS43 4 /53 4 : Topics in Networked (Networking) Systems Wireless Foundation: Wireless MAC; 802.11 MAC; New Designs Yang (Richard) Yang Computer Science Department Yale University 208A Watson Email: yry@cs.yale.edu http:// zoo.cs.yale.edu /classes/cs434 /. Admin. PS2 questions

926 views • 64 slides

Final

Final. What is a wireless LAN?. WLAN, like a LAN, requires a physical medium to transmit signals. Instead of using UTP, WLANs use: Infrared light (IR) 802.11 does include an IR specification limitations, easily blocked, no real 802.11 products (IrDA) Radio frequencies (RFs)

788 views • 63 slides

Performance Comparison of Multi-Hop Wireless Ad Hoc Network Routing Protocols

789 views • 63 slides

Wireless LANs and IEEE 802.11 MAC

Wireless LANs and IEEE 802.11 MAC. CSE 6590 Winter 2012. Overview. Applications of Wireless LANs. Key application areas: LAN extension cross-building interconnect nomadic access ad hoc networking. Infrastructure Wireless LAN. Ad Hoc Networking.

873 views • 59 slides

Wireless LANs

Wireless LANs. CSE 3213 Fall 2011. Overview. Applications of Wireless LANs. Key application areas: LAN extension cross-building interconnect nomadic access ad hoc networking. Infrastructure Wireless LAN. Ad Hoc Networking. temporary peer -to-peer network (no infrastructure).

867 views • 59 slides

Improving Performance of Wireless Networks

Improving Performance of Wireless Networks. Nitin Vaidya Joint work with Fan Wu, Tae Hyun Kim, Jian Ni, Vijay Raman, R. Srikant November 4, 2010. What Makes Wireless Networks Interesting?. Many forms of diversity Time Route Antenna Spatial Channel. Multi-Channel Environments.

693 views • 58 slides

Section 5.1 Explain why standards are necessary for networking

Section 5.1 Explain why standards are necessary for networking Explain how an Ethernet network functions List Ethernet classifications Section 5.2 Explain how a token-passing network functions List wireless network classifications Explain how wireless transmissions are sent.

447 views • 38 slides

Papers

453 views • 35 slides

Medium Access Control in

Medium Access Control in. IEEE 802.11. Introduction. This presentation deals with the principles of Medium Access Control in wireless LAN under standards IEEE 802.11. Medium Access Control MAC. Methods of Access Control: Polling from a central control:

519 views • 31 slides

Introduction to Networking

474 views • 28 slides

COMPUTER NETWORKS Data-link Layer (The Medium Access Control Sublayer)

MAC Sublayer. COMPUTER NETWORKS Data-link Layer (The Medium Access Control Sublayer). MAC Sublayer. Questions to be answered ? In broadcast networks, How the channel is divided between competing users? What is Medium Access Control (MAC)?

858 views • 25 slides

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Versatile MAC for Body Area Network ] Date Submitted: [4 May, 2009] Source: [J.S Yoon, Gahng S. Ahn, Myung J Lee, Seong-soon Joo] Company [CUNY, ETRI]

322 views • 23 slides

802.15.4 - An introduction

Jan Flora Department of Computer Science University of Copenhagen. 802.15.4 - An introduction. Overview. Introduction Device roles Topologies Communication and timing Beacon and non-beacon mode Superframes Indirect transmission The radio driver (PHY) Requirements Functionality

304 views • 20 slides

Wireless

477 views • 14 slides

Ad hoc TCP: achieving fairness with Active Neighbor Estimation

238 views • 14 slides

Computer Networks Protocols Lecture No.2: Physical & Data link layer PHYSICAL LAYER

Computer Networks Protocols Lecture No.2: Physical & Data link layer PHYSICAL LAYER SONETSDH Networks ? SONETSDH, that is used as a transport network to carry loads from other WANs. BLUETOOTH

390 views • 12 slides

In Defense of Wireless Carrier Sense

In Defense of Wireless Carrier Sense. Ramya Mudduluri. Introduction. Carrier Sense uses the feedback from a receiver to decide if the sender should transmit For large networks considering to reuse the network, carrier sense fails due to - Exposed terminal problem

292 views • 12 slides