1. Submission doc.: IEEE 802.11-13/0802r0 July 2013 Y.Inoue (NTT), A.Yamada (NTT docomo)Slide 1 Proposed re-categorization of the usage models Date: 2013-07-xx Authors:

2. Submission doc.: IEEE 802.11-13/0802r0 July 2013 Y.Inoue (NTT), A.Yamada (NTT docomo)Slide 2 Abstract This document proposes re-categorization of the HEW usage models and merger of similar use cases in current HEW usage model document.

3. Submission doc.: IEEE 802.11-13/0802r0 Current use cases and categorization Slide 14 of the usage models document Slide 3Y.Inoue (NTT), A.Yamada (NTT docomo) July 2013 1 high density of APs and high density of STAs per AP astadium bairport/train stations cexhibition hall dshopping malls eE-Education 2high density of STAs – Indoor adense wireless office bpublic transportation clecture hall 3 high density of APs (low/medium density of STAs per AP) – Indoor adense apartment building bCommunity WiFi 4 high density of APs and high density of STAs per AP – Outdoor aSuper dense urban Street bPico-cell street deployment cMacro-cell street deployment 5Throughput-demanding applications asurgery/health care (similar to 2e from 11ac) bproduction in stadium (similar to 1d-1e from 11ac) csmart car

4. Submission doc.: IEEE 802.11-13/0802r0 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 Slide 4Y.Inoue (NTT), A.Yamada (NTT docomo) July 2013

5. Submission doc.: IEEE 802.11-13/0802r0 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(?) Slide 5Y.Inoue (NTT), A.Yamada (NTT docomo) July 2013

6. Submission doc.: IEEE 802.11-13/0802r0 Out of scope (?) Category #3 Category #2 July 2013 Y.Inoue (NTT), A.Yamada (NTT docomo)Slide 6 Observations on current categories (1) 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 AP density high STA density high low Th _STA Th _AP Category #1 1a1b 1c 1d 1e 2a2a 2b 2c 3a3b 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.

7. Submission doc.: IEEE 802.11-13/0802r0 Out of scope (?) Category #4 July 2013 Y.Inoue (NTT), A.Yamada (NTT docomo)Slide 7 Observations on current categories (2) 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 AP density high STA density high low Th _STA Th _AP Category #1 1a1b 4a 4b4c 1c 1d 1e 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.

8. Submission doc.: IEEE 802.11-13/0802r0 Proposed changes to current categories We have two proposals 1.Simplify the category No overlapped region between the categories 2.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. Slide 8Y.Inoue (NTT), A.Yamada (NTT docomo) July 2013 Out of scope (?) Category #3 Category #2 AP density high STA density high low Th _STA Th _AP Category #1 1a1b’ 1c 1d 1e’ 2a2a 3a3b 2b

9. Submission doc.: IEEE 802.11-13/0802r0 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. Slide 9Y.Inoue (NTT), A.Yamada (NTT docomo) July 2013

10. Submission doc.: IEEE 802.11-13/0802r0July 2013 Y.Inoue (NTT), A.Yamada (NTT docomo)Slide 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