doc.: IEEE 802.11-06/655r0

Submission

May 2006

Slide 1 Scott Lee, et al., Samsung Electronics

Use Cases of WLAN for AV Streams

Scott Seongwook Lee, Huai-Rong Shao, Chilyoul Yang, Harkirat Singh and Chiu Ngo

Samsung ElectronicsMay 16, 2006

May 2006

Scott Lee, et al., Samsung Electronics

Slide 2

doc.: IEEE 802.11-06/655r0

Submission

Overview

• Application devices

• Configuration parameters

• Application examples

• Key requisites

May 2006

Scott Lee, et al., Samsung Electronics

Slide 3

doc.: IEEE 802.11-06/655r0

Submission

• Personal mobile devices– Mobility– Ad-hoc organization– Relative low bandwidth traffic– A little QoS requirement

Home PC

Projector Game console

Home theater(AV receiver)

MP3 player

Digital cameraCamcorder

DVD/BD playerSTB (Cable TV access)

DTV

Wireless AP(Internet gateway)

PMP

Laptop PC

Application Devices

• Home appliances– No mobility– Infrastructural organization– Relatively high bandwidth traffic– Stringent QoS constraints

May 2006

Scott Lee, et al., Samsung Electronics

Slide 4

doc.: IEEE 802.11-06/655r0

Submission

Configuration Parameters

Topology

Infrastructure

Cable set-top Network coordination with conventional AV set-top box

IP set-top IP gateway-centric network management environment

Ad hoc

Point-to-point

One-to-one direct communication (single hop)

End-to-end Delivering data over multiple intermediate nodes (multi-hop)Ex) Relaying data through participating wireless nodes

Service type

Unicast 1-to-1 communicationEx) Simple AV streaming or data communication btw. devices

Broadcast / Multicast 1-to-many communicationEx) Servicing the same AV to multiple devices simultaneously

Data type

Best-effort Legacy packets of data networksEx) Control signals btw. CE devices

Multimedia

Compressed Encoded AV streams with time latency of codecEx) AV streaming btw. STB and TV

Uncompressed

Raw AV data without codecEx) Streaming btw. game console and TV

• Thinkable WLAN applications fall into the combinations of the above categories.

• Among many different possible use cases from the combinations, some notable cases are illustrated in the following slides.

May 2006

Scott Lee, et al., Samsung Electronics

Slide 5

doc.: IEEE 802.11-06/655r0

Submission

Home PC

STB (Cable TV access)

DTV

Wireless AP(Internet gateway)

Digital cameraCamcorder

PMP

Cable set-top or IP set-top / Unicast / Compressed

DVD/BD player

Projector

Point-to-point / Unicast / Compressed

Application Examples (1)• Typical home environment use cases

– Usually infrastructure mode– Partially ad hoc connections (i.e., direct links)– Tx device transmits AV streams to a dedicated Rx device.

May 2006

Scott Lee, et al., Samsung Electronics

Slide 6

doc.: IEEE 802.11-06/655r0

Submission

Application Examples (2)

Home theater(AV receiver)

STB (Cable TV access)

Wireless AP(Internet gateway)

DVD/BD player

Cable set-top or IP set-top / Broadcast or Multicast / Compressed or Uncompressed

DTV

Projector

• Home environment with multiple Rx devices– Rx devices receiving the same AV streams– Time synchronization issues– Same QoS level to multiple Rx devices

May 2006

Scott Lee, et al., Samsung Electronics

Slide 7

doc.: IEEE 802.11-06/655r0

Submission

DTV

Point-to-point / Unicast / Uncompressed

Projector

Game console

Application Examples (3)• Wireless gaming environment

– Small latency requirement• Delays of codec are one of bottlenecks.• Strong FEC mechanism is expected.

– One of the most challenging cases

May 2006

Scott Lee, et al., Samsung Electronics

Slide 8

doc.: IEEE 802.11-06/655r0

Submission

PMP

Laptop PC

Hotspot /Jukebox

Point-to-point / Broadcast or Multicast / Compressed

Application Examples (4)• Multimedia jukebox in public places

– Hotspots or jukeboxes broadcast/multicast AV streams• QoS over broadcast/multicast channels• Film industry-approved security level• Pricing the public AV streams

– Personal Rx devices• Laptop• Personal multimedia player (PMP)

May 2006

Scott Lee, et al., Samsung Electronics

Slide 9

doc.: IEEE 802.11-06/655r0

Submission

PMP

Laptop PC

Hotspot /Jukebox

Point-to-point / Unicast / CompressedCable set-top or IP set-top / Unicast / Best-effort

DTV

Projector

Application Examples (5)• Multimedia rental services

– Rental houses• No physical media (CDs or DVDs) required• Film industry-approved security

– Users• Download AV files via secured channel• Watch movies through PMP while moving• Watch movies through DTV at home

May 2006

Scott Lee, et al., Samsung Electronics

Slide 10

doc.: IEEE 802.11-06/655r0

Submission

PMPLaptop PC

DTV

ProjectorSTB (Cable TV access)

Wireless AP(Internet gateway)

DVD/BD player

Home theater(AV receiver)

Laptop PC

Home PC

Cable set-top or IP set-top / Unicast or Broadcast or Multicast / Compressed or UncompressedCable set-top or IP set-top / Unicast / Best-effort

Application Examples (6)• Contents sharing with home storage devices

– Sources• Domestic distributed environment• Contents library

– Renderers• Contents browsing• Display panels (TV, web pad, etc.)• PCs (desktop, laptop, etc.)

– Both

May 2006

Scott Lee, et al., Samsung Electronics

Slide 11

doc.: IEEE 802.11-06/655r0

Submission

Key Requisites

• QoS  (throughput, delay, jitter)

• Reliability (strong FEC for low-latency applications)

• Broadcast/Multicast

• Coverage/Range

• Portability/Mobility

• Content protection and security

• Support different kinds of media formats

• Source of media content (stored vs. live/interactive )

May 2006

Scott Lee, et al., Samsung Electronics

Slide 12

doc.: IEEE 802.11-06/655r0

Submission

Thank you!