'Backoff' diaporamas de présentation

MAC Layer Security

823 views • 66 slides

Sensor Network II

867 views • 63 slides

Language modeling: Smoothing

667 views • 58 slides

Language modeling: Smoothing

740 views • 58 slides

Mac Addressing, Ethernet, and Interconnections

Mac Addressing, Ethernet, and Interconnections. MAC Addresses and ARP. 32-bit IP address: network-layer address used to get datagram to destination IP subnet MAC (or LAN or physical or Ethernet) address:

527 views • 33 slides

Computer Networks Protocols, TCP/IP Unix sockets

Computer Networks Protocols, TCP/IP Unix sockets. Computer Networks. A network is a hierarchical system of boxes, wires, towers, and satellites LAN (local area network) spans a building or campus. Ethernet is the most prominent example. WAN (wide-area network) spans country or world.

501 views • 31 slides

431 views • 31 slides

432 views • 29 slides

382 views • 27 slides

Presentation for Proposed p-DCF Contention Access Enhancement

Presentation for Proposed p-DCF Contention Access Enhancement. Jin-Meng Ho, Sid Schrum, Khaled Turki Donald P. Shaver and Matthew B. Shoemake Texas Instruments Incorporated 12500 TI Blvd. Dallas, Texas 75243 (214) 480-1994 (Ho) jinmengho@ti.com. Outline.

368 views • 26 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

IEEE802.11e Enhanced MAC for QoS and Efficiency

IEEE802.11e Enhanced MAC for QoS and Efficiency. What is QoS and why do we need it? Overview of 802.11e EDCA, TXOP, Traffic classes, burst ACKs Direct Link Protocol. QoS (Quality of Service). QoS parameters Delay/latency, available bandwidth, error correction, acknowledgement scheme

409 views • 24 slides

802.11 Specification overview

802.11 Specification overview. 802.11 Specifications. LLC. MAC Mgmt Service Interface. MAC Service Interface. LLC. MAC sublayer. MAC Layer Management. MAC Mgmt. WEP. MAC. MIB. PHY Service Interface. PHY Mgmt Service Interface. PLCP Sublayer. PHY. PHY layer Management. FH.

303 views • 23 slides

No Time to Countdown: Migrating Backoff to the Frequency Domain

499 views • 23 slides

Frame Delay Distribution Analysis of 802.11 Using Signal Flow Graphs

19 th FFV Workshop. Frame Delay Distribution Analysis of 802.11 Using Signal Flow Graphs. Ralf Jennen Communication Networks Research Group RWTH Aachen University, Faculty 6, Germany FFV Workshop, 11.03.2011. Outline. Scenarios Distributed Coordination Function (DCF) in IEEE 802.11

337 views • 23 slides

dpctl

dpctl. dpctl : command-line utility that sends basic OpenFlow messages, useful for viewing switch port and flow stats, plus manually inserting flow entries . little tool for first steps and debugging

509 views • 21 slides

Analysis of Ethernet-like protocols

296 views • 20 slides

Service differentiation mechanisms for IEEE 802.11-based wireless networks

Service differentiation mechanisms for IEEE 802.11-based wireless networks. Srikant Kuppa , Ravi Prakash University of Texas at Dallas WCNC2004. Outline. Instruction Possible MAC policies for Service Differentiation SAB (schedule after backoff) SBB (schedule before backoff)

293 views • 19 slides

Ethernet

262 views • 14 slides

E-DCF with Backoff Adaptation to Traffic

E-DCF with Backoff Adaptation to Traffic. Mathilde Benveniste AT&T Labs, Research. Relevant submissions: IEEE 802.11-00/375 (.ppt and .doc); -00/456; -00/457; -01/002; -01/004; -01/019; -01/117r1; -01/135r1; -01/144. Backoff Adaptation - General.

287 views • 14 slides