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Doc.: IEEE 802.11-03/327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 1 A Proposed Usage Model Methodology for High Throughput Task Group Adrian.

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Presentation on theme: "Doc.: IEEE 802.11-03/327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 1 A Proposed Usage Model Methodology for High Throughput Task Group Adrian."— Presentation transcript:

1 doc.: IEEE /327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 1 A Proposed Usage Model Methodology for High Throughput Task Group Adrian Stephens ( Eldad Perahia Sean Coffey

2 doc.: IEEE /327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 2 Methodology Goals To allow measurement of properties of a proposal so that it can be evaluated against our criteria To be adequately realistic To be as simple as this permits To get a common set of assumptions To allow apples-apples comparison

3 doc.: IEEE /327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 3 Goals of this submission To get agreement to the methodology –Agreement to the principle, not the details –Straw Poll Highlight that lots of TBDs need to be researched –We can work on the methodology in this meeting –But need to go away and look for figures Call for interest in setting up a special committee to fill in the TBDs

4 doc.: IEEE /327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 4 Use Cases / Scenarios Enterprise –Planned cellular deployment Hot spot –Large numbers of clients –Uncoordinated deployment of APs from different vendors and by different service providers Home –Mix of multimedia and data Mixed –Mix of co-channel legacy and HT devices + others TBD (e.g. backhaul)

5 doc.: IEEE /327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 5 Applications Web Browsing File server Instant Messaging Interactive Video (e.g. netmeeting) + others we havent thought of yet Video Gaming HDTV High Quality Audio VoIP phones File sharing Backup

6 doc.: IEEE /327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 6 Application Types TCP vs UDP, Down vs Up TCP application follows a repeating: wait, transmit request, wait for response cycle. UDP application follows a wait, transmit cycle Each application has specified distributions for: –Wait duration –Request length (up applications) –Response length (down applications)

7 doc.: IEEE /327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 7 Application Specification (example) … + the other applications

8 doc.: IEEE /327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 8 Usage model specification For each usage model specify: –Number of STA –For each STA: List applications running on that STA e.g. STA1 (HDTV), STA2 (backup), STA3 ( + web browsing + interactive video). –Channel model type & Range of BSS e.g. Domestic, NLOS, 20m

9 doc.: IEEE /327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 9 Other model details STA are distributed randomly (uniform distribution) within BSS defined by usage model range Measurements performed over at least 5 minutes of run time Measurements to be averaged over TBD multiple random STA position configurations

10 doc.: IEEE /327r0 Submission May 2003 Adrian Stephens, Intel et alSlide 10 Where do we go from here? A special committee is proposed to develop a usage model using the methodology described here. Major decisions will always be taken by the TG, but we dont have time to debate each of the parameters in a usage model. Contributions are solicited from members to: –share results of research between meetings –coordinate presentations on usage models –with the aim of providing the unknowns in the current framework Straw Poll for interest.


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