IEEE 802 Standards Overview

802.2 Logical Link

802.1 Bridging

CSMA/CD Token Ring IntegratedServices

DemandPriority

WiMAX

Token Bus DistributedQueue

Token Bus

WLAN Bluetoothand

ZigBee

802.

1 M

anag

emen

t

802

Ove

rvie

wan

d A

rchi

tect

ure

802.

10 S

ecur

ity

802.16 MAC

802.16 PHY

802.3 MAC

802.3 PHY

802.4 MAC

802.4 PHY

802.5 MAC

802.5 PHY

802.6 MAC

802.6 PHY

802.9 MAC

802.9 PHY

802.11 MAC

802.11 PHY

802.12 MAC

802.12PHY

Data Link Layer

PhysicalLayer

Network Layer

802.15 MAC

802.15 PHY

Is Bluetooth only for headphones?

It is a Wireless Network for ShortRange Communication

Bluetooth Applications

Wireless keyboards

Bluetooth Applications

Handy mobile phones

Bluetooth Applications

In-car communication

Bar-code scanners

Bluetooth Applications

IEEE 802.15.1 - Bluetooth

100 m

Approx range

10 m

1 m

c.f. IEEE Standard 802.15.1-2002

Three power classes for different ranges.

IEEE 802.15.1 - BluetoothModulation: GFSK, Gaussian Frequency Shift Keying

c.f. IEEE Standard 802.15.1-2002

IEEE 802.15.1 - Bluetooth

c.f. IEEE Standard 802.15.1-2002

Error Control Coding 1: Headers and data

Headers

(3,1,3) Repetition Code

Payload

(15,10,4) Shortened Hamming Code

IEEE 802.15.1 - Bluetooth

c.f. IEEE Standard 802.15.1-2002

Error Control Coding 2: CRC – Cyclic Redundancy Check for ARQ

IEEE 802.15.1 - Bluetooth

c.f. IEEE Standard 802.15.1-2002

Timing

Bluetooth Topology

Master

Slave - Active

Parked - Inactive

Stand-By - Disconnected

Bluetooth Piconet

Bluetooth Topology

Master Slave Parked Stand-By

Bluetooth Scatternet

IEEE 802.15.2 - Coexistence

Timing issues

Interference

…

…with other 2.4 GHz technologies

IEEE 802.15.3 – High Speed

c.f. IEEE Standard 802.15.3-2003

Overview of Modulation, Coding and Rates

IEEE 802.15.3 – High Speed

c.f. IEEE Standard 802.15.3-2003

IEEE 802.15.3 – High Speed

c.f. IEEE Standard 802.15.3-2003

TCM – Trellis Coded Modulation

The output of the convolutional encoderchooses signal points.

IEEE 802.15.3 – High Speed

c.f. IEEE Standard 802.15.3-2003

Trellises

IEEE 802.15.3 – High Speed

c.f. IEEE Standard 802.15.3-2003

0

Trellises

IEEE 802.15.3 – High Speed

c.f. IEEE Standard 802.15.3-2003

Trellises