'Cf poll' diaporamas de présentation

Chapter 9-MAC Architecture

Chapter 9-MAC Architecture. Packets, frame and bits Data-Link layer MAC Service Data Unit (MSDU) MAC Protocol Data Unit (MPDU ) Physical layer PLCP Service Data Unit (PSDU) PLCP Protocol Data Unit (PPDU) 802.11 and 802.3 interoperability Three 802.11 frame types Management frames

985 views • 82 slides

Chapter 9-MAC Architecture

Chapter 9-MAC Architecture. Packets, frame and bits Data-Link layer MAC Service Data Unit (MSDU) MAC Protocol Data Unit (MPDU ) Physical layer PLCP Service Data Unit (PSDU) PLCP Protocol Data Unit (PPDU) 802.11 and 802.3 interoperability Three 802.11 frame types Management frames

914 views • 82 slides

802.11 PCF and Power Save Mode

802.11 PCF and Power Save Mode. Overview. Time is divided into contention period (CP) and contention free period (CFP). During CP, transfers used DCF, i.e., Data-ACK, or RTS-CTS-Data-ACK, with exponential back-off etc.

492 views • 49 slides

Outline

Outline. Wireless introduction Wireless cellular (GSM, CDMA, UMTS) Wireless LANs, MAC layer IEEE 802.11 Bluetooth ZigBee Wireless Ad hoc networks routing: proactive routing, on-demand routing, scalable routing, geo-routing wireless Ad hoc multicast TCP in ad hoc networks

671 views • 47 slides

Voice Traffic Performance over Wireless LAN using the Point Coordination Function

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CSE401n: Computer Networks

CSE401n: Computer Networks. Lecture 16 Wireless Link & LANs WS: ch-14 KR: 5.7. 802.11b operate at 2.4 GHz, 11 Mbps widely deployed 802.11a 5-6 GHz range up to 54 Mbps 802.11g 2.4 GHz up to 54 Mbps All have base-station and ad-hoc network versions

431 views • 37 slides

Problems with IEEE 802.11(e) NAV Operation and ONAV Proposal

Problems with IEEE 802.11(e) NAV Operation and ONAV Proposal. Javier del Prado, Sunghyun Choi, and Amjad Soomro Philips Research-USA Briarcliff Manor, New York sunghyun.choi@philips.com. Outline. Introduction The Overlapping BSS problem NAV rules under HCF

489 views • 33 slides

802.11e Medium Access Control Enhancements for Quality of Service

802.11e Medium Access Control Enhancements for Quality of Service. HPMN lab. ??? ?? (1). AC : Access Category CAP :Controlled Access Period (HCF ?? HC ? ??? station ?? medium ??? access ? control ?? ?? ) CCI :Controlled Contention Interval

362 views • 20 slides

Signaling for Streaming in IEEE 802.11e

Signaling for Streaming in IEEE 802.11e. Srinivas Kandala, John M. Kowalski Sharp Laboratories of America Toru Ueda, Satoshi Terada, Masahiro Esashi STDC, Sharp Corporation. Signaling for streaming. How to set up, modify and tear-down a stream. References : Joint Proposal 00/71

237 views • 12 slides