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Proposed re-categorization of the usage models

Proposed re-categorization of the usage models. Date: 2013-07-xx. Authors:. Abstract. This document proposes re-categorization of the HEW usage models and merger of similar use cases in current HEW usage model document. Current u se cases and categorization.

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Proposed re-categorization of the usage models

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  1. Proposed re-categorization of the usage models • Date:2013-07-xx Authors: Y.Inoue (NTT), A.Yamada (NTT docomo)

  2. Abstract • This document proposes re-categorization of the HEW usage models and merger of similar use cases in current HEW usage model document. Y.Inoue (NTT), A.Yamada (NTT docomo)

  3. Current use cases and categorization • Slide 14 of the usage models document Y.Inoue (NTT), A.Yamada (NTT docomo)

  4. HEW conference calls after the May 2013 meeting • Summary of the last teleconference • To consider missing use cases • Reconsider category in slide 14 of 13/657r2 • Need to discuss definitions for the high density environment • Inclusion of the cellular offload use case in some use cases, etc • Purpose of this presentation • To propose re-categorization of the usage models/use cases Y.Inoue (NTT), A.Yamada (NTT docomo)

  5. Discussions on the category • Teleconferences after the May 2013 session: • During the teleconference #1, changes to the category in 13/657r0 was suggested by HanGyu (LG Electronics) • During the teleconference #2, there was a comment that we should be careful in identifying the problem. • Current categories • 1: high density of APs and high density of STAs per AP • 2: high density of STAs – Indoor • 3: high density of APs (low/medium density of STAs per AP) – Indoor • 4: high density of APs and high density of STAs per AP – Outdoor • 5: Throughput-demanding applications • Current criteria for the categorization • Density of APs and STAs, indoor/outdoor, application(?) Y.Inoue (NTT), A.Yamada (NTT docomo)

  6. Observations on current categories (1) AP density high • For indoor usage models: • High AP density and high STA density area is covered by three categories (Category #1, #2, #3) • There are similar use cases. • 1b and 2b: public transportation • 1e and 2c: education, lecture hall Category #3 Category #2 Category #1 1b 1a 3a 3b 2c 1e 1c 1d Th_AP Out of scope (?) STA density high Th_STA low 2a The WFA may have a difficulty in prioritizing the use cases because • There are different categories that cover the same region, and • There are similar use cases in different categories. 2b low Y.Inoue (NTT), A.Yamada (NTT docomo)

  7. Observations on current categories (2) AP density high • For outdoor usage models: • Both category #1 and category #4 cover the same region, i.e., high AP density and high STA • There are regions not covered by current categories • Need to discuss whether to include those regions • There are similar use cases. • 1b and 4b: public transportation • 1e and 2c: education, lecture hall Not covered Category #1 Category #4 1b 1a 4a 1e 1c 1d Th_AP 4b 4c Out of scope (?) STA density high Th_STA low Not covered The WFA may have a difficulty in prioritizing the use cases because • There are different categories that cover the same region, and • There are similar use cases in different categories. low Y.Inoue (NTT), A.Yamada (NTT docomo)

  8. Proposed changes to current categories AP density high • We have two proposals • Simplify the category • No overlapped region between the categories • Merge the similar use cases • For example, • The use cases 1e and 2c are merged to 1e’ • An example of indoor categorization is shown here. Category #3 Category #1 1b’ 1a 3a 3b 1e’ 1c 1d Th_AP Out of scope (?) Category #2 STA density high Th_STA low 2a 2b low Y.Inoue (NTT), A.Yamada (NTT docomo)

  9. Summary • Re-categorization: • Proposed to define the categories not to overlap each other. • Similar use cases should be merged and be categorized to the one we think more important. Y.Inoue (NTT), A.Yamada (NTT docomo)

  10. References • [1] 11-13-0657-02-0hew-hew-sg-usage-models-andrequirements-liaison-with-wfa.ppt • [2] 11-13-0663-01-0hew-teleconference-minutes-20130605.docx • [3] 11-13-0704-00-0hew-teleconference-minutes-20130619.docx Y.Inoue (NTT), A.Yamada (NTT docomo)

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