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Use Cases of WLAN for AV Streams

Use Cases of WLAN for AV Streams. Scott Seongwook Lee, Huai-Rong Shao, Chilyoul Yang, Harkirat Singh and Chiu Ngo Samsung Electronics May 16, 2006. Overview. Application devices Configuration parameters Application examples Key requisites. Home appliances No mobility

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Use Cases of WLAN for AV Streams

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  1. Use Cases of WLAN for AV Streams Scott Seongwook Lee, Huai-Rong Shao, Chilyoul Yang, Harkirat Singh and Chiu Ngo Samsung Electronics May 16, 2006 Scott Lee, et al., Samsung Electronics

  2. Overview • Application devices • Configuration parameters • Application examples • Key requisites Scott Lee, et al., Samsung Electronics

  3. Home appliances No mobility Infrastructural organization Relatively high bandwidth traffic Stringent QoS constraints Personal mobile devices Mobility Ad-hoc organization Relative low bandwidth traffic A little QoS requirement Game console Projector Home theater (AV receiver) PMP Laptop PC Wireless AP (Internet gateway) Home PC DTV Camcorder Digital camera STB (Cable TV access) DVD/BD player MP3 player Application Devices Scott Lee, et al., Samsung Electronics

  4. Configuration Parameters • 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. Scott Lee, et al., Samsung Electronics

  5. Projector PMP Wireless AP (Internet gateway) DTV Camcorder Home PC Digital camera STB (Cable TV access) DVD/BD player 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. Point-to-point/ Unicast / Compressed Cableset-top or IP set-top/ Unicast / Compressed Scott Lee, et al., Samsung Electronics

  6. Projector Home theater (AV receiver) Wireless AP (Internet gateway) DTV STB (Cable TV access) DVD/BD player Application Examples (2) • Home environment with multiple Rx devices • Rx devices receiving the same AV streams • Time synchronization issues • Same QoS level to multiple Rx devices Cableset-top or IP set-top/ Broadcast or Multicast / Compressed or Uncompressed Scott Lee, et al., Samsung Electronics

  7. Game console Projector DTV 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 Point-to-point/ Unicast / Uncompressed Scott Lee, et al., Samsung Electronics

  8. Laptop PC Hotspot / Jukebox PMP 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) Point-to-point/ Broadcast or Multicast/Compressed Scott Lee, et al., Samsung Electronics

  9. Projector Laptop PC DTV Hotspot / Jukebox PMP 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 Cableset-top or IP set-top/ Unicast /Best-effort Point-to-point/ Unicast /Compressed Scott Lee, et al., Samsung Electronics

  10. Projector Home theater (AV receiver) Laptop PC Laptop PC Wireless AP (Internet gateway) Home PC DTV STB (Cable TV access) DVD/BD player PMP 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 Cableset-top or IP set-top/ Unicast /Best-effort Cableset-top or IP set-top/ Unicast or Broadcast or Multicast /Compressed or Uncompressed Scott Lee, et al., Samsung Electronics

  11. 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 ) Scott Lee, et al., Samsung Electronics

  12. Thankyou! Scott Lee, et al., Samsung Electronics

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