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July 2009
Minho Cheong, ETRI and Peter Loc, RalinkSlide 1
Supporting Document for TGac Evaluation Methodology
Authors: Name Affiliations Address Phone email Minho Cheong ETRI 138 Gajeongno, Yuseong-gu,
Daejeon, 305-700, Korea +82-42-860-5635
Peter Loc Ralink Technology
20833 Stevens Creek Blvd, Suite 200., Cupertino CA 95014
408 807-0868 [email protected]
doc.:IEEE 802.11-09/0838r0
Submission
Scenario 3 in TGac Evaluation Methodology
• In-home entertainment application with multiple flows with varied QoS requirements including lightly-compressed video.
• This scenario is derived from scenario #1 defined in 802.11n usage model document and modified in order to consider usage model 2a and 2b (PVR’s in residential) defined in ‘11-09-0161-02-00ac-802.11ac-usage-model-document’.
Slide 2
July 2009
Minho Cheong, ETRI and Peter Loc, Ralink
doc.:IEEE 802.11-09/0838r0
Submission
Logical Link in Scenario 3 (detail)(solid and dashed line means heavy and light traffic, respectively)
Slide 3
STA2
STA3
STA4
STA1
STA7
STA8
STA9
STA11 STA10
STA6 STA5
AP
LC video
VoDcontrol.
Blu-ray
MPEG2
Blu-rayMP3
Internet
control
controlMPEG2control
Blu-ray
control
Blu-ray
control
control
MPEG2video
console
consolecontrol
localfile transfer
video phone
video phone
July 2009
Minho Cheong, ETRI and Peter Loc, Ralink
doc.:IEEE 802.11-09/0838r0
STA12 STA13
STA14
VoIP
VoIP
VoIP
Submission
Logical Link in Scenario 3 (conceptual)
Slide 4
STA2
STA3
STA4
STA1
STA7
STA8
STA9
STA11 STA10
STA6 STA5
AP
LC-video from AP
PVR to display via AP- PVR with blu-ray quality- PVR with MPEG2 quality
Merged entertainment - Internet-streaming video - MP3 audio,video gaming - control to console
Video-phone services
VoIP services Others - STA-to-STA file transfer
already defined in 11n scenario 1
July 2009
Minho Cheong, ETRI and Peter Loc, Ralink
doc.:IEEE 802.11-09/0838r0
STA12
STA13
STA14
Submission
Service Description in Scenario 3
• STA1: Lightly-compressed video from AP• STA2: Display with HD MPEG2 quality, VoD control channel• STA3: Display with Blu-ray quality, VoD control channel• STA4: Display with Blu-ray quality, VoD control channel, Internet/local File
transfer• STA5: Video Phone• STA6: Video Phone• STA7: PVR with HD MPEG2 quality• STA8: PVR with Blu-ray quality• STA9: PVR with Blu-ray quality• STA10: Internet streaming video, MP3 Audio, Video gaming, console to internet,
local file transfer• STA11: Video gaming, controller to console• STA12: VoIP phone• STA13: VoIP phone• STA14: VoIP phone
Slide 5
July 2009
Minho Cheong, ETRI and Peter Loc, Ralink
doc.:IEEE 802.11-09/0838r0
Submission
About Devices with 1-2 Antennas
• There is a proliferation of video/data traffic from small-form factor devices with 1-2 antennas. e.g., netbooks, smart-phones, camcorders, video-cams.
• There is need to ensure that 11ac standards proposals scales network throughputs in the presence of such devices.
• So, need to incorporate 1-2 antenna devices in simulation scenarios, to evaluate technology proposals.– In scenario 3, STA7, STA8 and STA9 may be PVR devices
(such as handheld camcorders with 1-2 antennas).– In scenario 4, some devices involved in local file transfers may
be netbooks or smartphones with 1-2 antennas. (e.g. STA11, STA12, STA 21, STA22)
July 2009
Submission
doc.:IEEE 802.11-09/0838r0
Slide 6 Minho Cheong, ETRI and Peter Loc, Ralink
Appendix - Usage Model 2a: Lightly Compressed Video Streaming throughout the home
Traffic Conditions: Occasional interference from other homes because WLAN is on other channels. Data transfers consuming up to 20% of the total bandwidth, 2 additional video streams, and wireless display/controllers from a video game machine may be occurring during this use case. Microwave may be running for up to 5 minutes.
Use Case:1.User looks up a program on electronic program guide.2.User selects a video. 3.Lightly Compressed Video is delivered/uploaded over the wireless network for a period of two hours. 4.User may pause video during 2 hour period then resume watching.5.Task is complete when user stops watching the video.
Pre-Conditions: User has operational WLAN network which includes a TV with wireless capabilities, a PVR with wireless capabilities, and an AP associated with the WLAN that is not in the same room as the game machine and TV.
Application: User can display the output of the PVR wirelessly on the TV using a video codec like Motion 2000 JPEG that lightly compresses video.
Environment: Two story, three bedroom house with an AP in one corner in the den. Other homes in the area are also operating WLANs. Transmissions are mostly Non-LOS. Distance between far corners of the home are ~100 feet with as many as 8 walls (and one floor) between the video end points.
Slide 7
July 2009
Minho Cheong, ETRI and Peter Loc, Ralink
doc.:IEEE 802.11-09/0838r0
Submission
Appendix - Usage Model 2b: Compressed video streaming in a room or throughout a home
Traffic Conditions: Severe interference from multiple streams in the house and other homes because WLAN is on other channels. High speed data transfers consuming up to 20% of the total bandwidth, many additional video streams, and wireless display/controllers from a video game machine may be occurring during this use case. Microwave may be running for up to 5 minutes.
Use Case:1.User looks up a program on electronic program guide.2.User selects a video. 3.Compressed Video is delivered/uploaded over the wireless network for a period of two hours. 4.User may pause video during 2 hour period then resume watching.5.Task is complete when user stops watching the video.
Pre-Conditions: User has operational WLAN network which includes a TV with wireless capabilities, a PVR with wireless capabilities, and an AP associated with the WLAN that is not in the same room as the game machine and TV.
Application: User can display the output of the PVR wirelessly on the TV using high definition compressed video with a codec like BluRay . Expect three or four simultaneous HD streams.
Environment: Two story, three bedroom house with an AP in one corner in the den. Other homes in the area are also operating WLANs. Transmissions are mostly Non-LOS. Distance between far corners of the home are ~100 feet with as many as 8 walls (and one floor) between the video end points.
Slide 8
July 2009
Minho Cheong, ETRI and Peter Loc, Ralink
doc.:IEEE 802.11-09/0838r0
SubmissionSubmission
