May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 1

doc.: IEEE 802.11-04/0530r0

Submission

Mesh networks for home entertainment

Guido R. Hiertz, Yunpeng ZangComNets

Chair of Communication NetworksAachen University

Germany

Jörg HabethaPhilips Research

AachenGermany

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 2

doc.: IEEE 802.11-04/0530r0

Submission

Consumer electronics (CE)

• Television set• DVD/CD

– Player/Recorder

– Wireless active speakers

– Surround sound

– Home Cinema/Theatre

• Remote control• Game console

• Radio tuner (digital/analog)

• Satellite receiver (digital/analog)

• MP3– Computer as source

– CE device as source

• Wireless phones– VoIP

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 3

doc.: IEEE 802.11-04/0530r0

Submission

Classification from user view

• Video– Video telephony not

widely accepted

– Mainly streaming

– Mainly non-interactive

– High Definition TV

• Game console

• Audio– Music/Sound streams

– Surround

– Telephony (VoIP)

• Control– Channel selection

– Volume, etc.

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 4

doc.: IEEE 802.11-04/0530r0

Submission

Video devices

• Video display devices– TV set

• CRT

• LCD

• Plasma

– Video projector• LCD

• LCOS

• Mounted above head

• Video source devices– VCR

– Camcorder

– DVD

– Set top box

– Satellite receiver

– Streaming server

– Video provider

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 5

doc.: IEEE 802.11-04/0530r0

Submission

Audio devices

• Simplex source– Radio

(satellite/terrestrial)

– CD/DVD

– MP3

• Simplex sink– Active speakers

– Headset

• Duplex devices– Wireless phone

– VoIP

– In house communication

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 6

doc.: IEEE 802.11-04/0530r0

Submission

Game console

• Combines Video and Audio signal– Rendered on your PC– Displayed somewhere else– Surround sound created on PC– Sound played back at game console

• Control channel– Human Interface Devices (HID)

• Joystick etc.

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 7

doc.: IEEE 802.11-04/0530r0

Submission

Requirements to CE

• Ease of use

• No user configuration

• Support well known behavior of CE devices

• Limit functionality to useful subset

• No flaws on QoS tolerated

Competition to existing Audio/Video broadcast systems

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 8

doc.: IEEE 802.11-04/0530r0

Submission

Home environment (1)

• Many stationary devices• Consumer electronic device always powered• Few mobile devices

– Tablet PC

– PDA

– VoIP phone

• Slow mobility• Very slow changing environment

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 9

doc.: IEEE 802.11-04/0530r0

Submission

Home environment (2)

• Single household– Single Basic Service Set– Single administrative instance

• Multiple apartments in shared environment– Multiple households– Self organizing MAC needed– Competition among neighbors on wireless

medium

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 10

doc.: IEEE 802.11-04/0530r0

Submission

Home environment (3)

CamcorderTV

VCR

TV

TV

Radio

PC

PhoneBay Networks

SD

Ba

y N

etw

ork

s

Ba

yS

tac

kA

cces

s P

oin

t6

50

Wir

ele

ss

AP

aufwärts

Wireless VoIP

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 11

doc.: IEEE 802.11-04/0530r0

Submission

Home environment (3)

CamcorderTV

VCR

TV

TV

Radio

PC

PhoneBay Networks

SD

Ba

y N

etw

ork

s

Ba

yS

tac

kA

cces

s P

oin

t6

50

Wir

ele

ss

AP

aufwärts

Wireless VoIP

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 12

doc.: IEEE 802.11-04/0530r0

Submission

Mobility support

CamcorderTV

VCR

TV

TV

Radio

PC

PhoneBay Networks

SD

Ba

y N

etw

ork

s

Ba

yS

tac

kA

cces

s P

oin

t6

50

Wir

ele

ssAP

aufwärts

Wireless VoIP

Mobilitysupport

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 13

doc.: IEEE 802.11-04/0530r0

Submission

Multi Hop

• Installation of multiple APs not possible– Women's acceptance factor– Device mesh network

• Attenuation by walls– High for 802.11a (5GHz)

• Reduce transmission power to reduce exposition to human beings

Multi hop capability needed

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 14

doc.: IEEE 802.11-04/0530r0

Submission

CE is sensitive to cost

• Multiple transceiver solutions– Frequency diversity

– Easy spatial frequency reuse

– May set up separate backbone

– Parallel transmissions possible

• Single transceiver solutions– Cheap

– Sufficient for average user (?)

– Avoid unused TRx

– Easy integration to CE

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 15

doc.: IEEE 802.11-04/0530r0

Submission

WPAN 802.15.3

• Various submissions regarding CE– Consumer electronic industry requirements for

TG3a alt PHY (802.15-03/276r0)– Application of mmW-based PHYs (802.15-

03/474r2)

May 2004

Guido R. Hiertz, ComNets, Aachen University

Slide 16

doc.: IEEE 802.11-04/0530r0

Submission

Thank you for you attention

hiertz@ieee.org