Course Overview

Wireless Local Area Networks

Characteristics of Wireless LANs

Design Goals for Wireless LANs

Infrared vs. Radio Transmission

IEEE 802.11

802.11 Infrastructure Network

802.11 Ad-hoc Network

IEEE Family of Standards

802.11 Layers and Functions

802.11 Physical Layer

IEEE 802.11 MAC Architecture

802.11 MAC Layer

802.11 MAC Layer

802.11 MAC: CSMA/CA

802.11 MAC: Competing Stations

IEEE 802.11 DCF Protocol

802.11 MAC: CSMA/CA

802.11 MAC: RTS/CTS

IEEE 802.11: DCF and PCF Coexistence

802.11 MAC:
Point Coordination Function

802.11 MAC:
Point Coordination Function

802.11 MAC Frame Format

MAC Address Format

802.11 MAC Management

Synchronization using a Beacon (Infrastructure Network)

Synchronization using a Beacon
(Ad-hoc Network)

IEEE TSF: Does not scale!

Alternative Solution: CSMNS

Comparison TSF and CSMNS

Power Management

Power Saving with Wake-up Patterns (Infrastructure Network)

Power Saving with Wake-up Patterns
(Ad-hoc Network)

802.11 Roaming

WLAN: IEEE 802.11b

Channel Selection (Non-Overlapping)

WLAN: IEEE 802.11a

WLAN: IEEE 802.11 – Future Developments

Bluetooth: “Personal Area Networks”

Bluetooth General Characteristics

Bluetooth Intended Uses

Bluetooth

History and hi-tech…

…and the real rune stone

Bluetooth Radio

Bluetooth Frequency Hopping/Time Division Duplex Scheme

Bluetooth MAC Protocol

Bluetooth MAC Protocol

Bluetooth Data Rates

Piconet

Forming a Piconet

Bluetooth PicoNet Example

Baseband States of a Bluetooth Device

Bluetooth Power States

Bluetooth Scatternets

Scatternet

Bluetooth Scatternets

Bluetooth Scatternet

Security

SDP – Service Discovery Protocol

WPAN: IEEE 802.15-1 – Bluetooth

WPAN: IEEE 802.15 – Future Developments 1

WPAN: IEEE 802.15 – Future Developments 2