doc.: ieee 802.11-06/0322r0 submission march 2006 royce fernald - intel corporationslide 1 video use...
TRANSCRIPT
March 2006
Royce Fernald - Intel Corporation
Slide 1
doc.: IEEE 802.11-06/0322r0
Submission
Video Use Cases
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Name Company Address Phone Email Royce Fernald Intel 5200 Elam Young Pkwy MS:HF3-96
Hillsboro, OR 97124 503-696-4318 [email protected]
Audrey Younkin Intel 5200 Elam Young Pkwy MS:HF3-96 Hillsboro, OR 97124
503-696-3947 [email protected]
Philip Corriveau
Intel 5200 Elam Young Pkwy MS:HF3-96 Hillsboro, OR 97124
503-696-1837
Uriel Lemberger
Intel Matam Industrial Park PO Box 1659 Haifa 31015 Israel
+972-4-865-5701
Fanny Mlinarsky Azimuth 31 Nagog Park Acton, MA 01720
978-263-6610 [email protected]
Christopher Trecker Azimuth 31 Nagog Park Acton, MA 01720
978-263-6610 [email protected]
Authors:
March 2006
Royce Fernald - Intel Corporation
Slide 2
doc.: IEEE 802.11-06/0322r0
Submission
Abstract
• Goals
• Video Stream Types
• Buffered Video
• Metrics for Buffered Video
• Latency-sensitive Unidirectional Video
• Latency-sensitive Bidirectional Video
• Metrics for Latency-sensitive Video
• Audio Streams
• References
March 2006
Royce Fernald - Intel Corporation
Slide 3
doc.: IEEE 802.11-06/0322r0
Submission
Goals
• Outline and characterize typical video use cases, focusing on video over wireless applications
• Propose primary and secondary metrics for video streams
March 2006
Royce Fernald - Intel Corporation
Slide 4
doc.: IEEE 802.11-06/0322r0
Submission
Video Stream Types
• Buffered– Unidirectional playback of stored content
• Latency-sensitive– Time-critical unidirectional or bidirectional video streams
March 2006
Royce Fernald - Intel Corporation
Slide 5
doc.: IEEE 802.11-06/0322r0
Submission
Buffered Video
• Playback of prerecorded content
• Time shifting of real-time video streams (DVR functionality)
March 2006
Royce Fernald - Intel Corporation
Slide 6
doc.: IEEE 802.11-06/0322r0
Submission
Buffered Video
March 2006
Royce Fernald - Intel Corporation
Slide 7
doc.: IEEE 802.11-06/0322r0
Submission
Metrics for Buffered Video
• Primary Metrics– GED Mean Opinion Score for playback smoothness
– VQM Mean Opinion Score for image quality
• Secondary Metrics– Throughput
– Packet loss
March 2006
Royce Fernald - Intel Corporation
Slide 8
doc.: IEEE 802.11-06/0322r0
Submission
Latency-sensitive Unidirectional Video
• Display remoting
• Remote gaming
• Remote monitoring
March 2006
Royce Fernald - Intel Corporation
Slide 9
doc.: IEEE 802.11-06/0322r0
Submission
Latency-sensitive Unidirectional Video
March 2006
Royce Fernald - Intel Corporation
Slide 10
doc.: IEEE 802.11-06/0322r0
Submission
Latency-sensitive Bidirectional Video
• Video conferencing
March 2006
Royce Fernald - Intel Corporation
Slide 11
doc.: IEEE 802.11-06/0322r0
Submission
Latency-sensitive Bidirectional Video
March 2006
Royce Fernald - Intel Corporation
Slide 12
doc.: IEEE 802.11-06/0322r0
Submission
Metrics for Latency-sensitive Video
• Primary Metrics– GED Mean Opinion Score for playback smoothness
– VQM Mean Opinion Score for image quality
• Secondary Metrics– Throughput
– Packet loss
– Jitter
– Delay
– Required client buffer depth (or client low-watermark)
March 2006
Royce Fernald - Intel Corporation
Slide 13
doc.: IEEE 802.11-06/0322r0
Submission
Audio Streams
• Video streams are generally accompanied by audio
• Audio is grouped with video using stream identifiers and is usually sent in separate packets
• Buffered audio playback behaves like buffered video, although it requires less bandwidth
• Latency-sensitive audio is similar to the voice call use case
March 2006
Royce Fernald - Intel Corporation
Slide 14
doc.: IEEE 802.11-06/0322r0
Submission
References
IEEE 802.11-06/0144r1 “Video over Wireless Methodology“
IEEE 802.11-05/1194r0, “Video Testing Methodology”
IEEE 802.11-05/0887r0, “Video Testing Strategy”