1 Residential A - Apartment building e.g. ~10m x 10m apartments in a multi-floor building ~10s of STAs/AP, P2P pairs Unmanaged Indoor Flat Home 2 Enterprise B - small BSSs with clusters e.g. ~10-20m inter AP distance, ~100s of STAs/AP, P2P pairs Managed Indoor Flat Enterprise 3 Indoor Small BSS Hotspot C - small BSSs, uniform e.g. ~10-20m inter AP distance ~100s of STAs/AP, P2P pairs Mobile 4 Outdoor BSS Hotspot D - Large BSSs, uniform e.g. 100-200m inter AP distance ~100s of STAs/AP, P2P pairs Managed Outdoor Flat Mobile 4a Outdoor BSS Hotspot + Residential D+A Managed + Unmanaged Hierarchical Mobile + Home Considerations on the feedback from WFA Document 11-13/1443 includes feedback from WFA regarding prioritization of usage models. Document 11-13/1456r1 shows a mapping between the prioritized usage models and the simulation scenarios in this document (as of r5). The summary is copied here: Mapping 1b Airport / station Scenario 3 1e E-education Scenario 2 3a Dense apartment building Scenario 1 4b Pico-cell street deployment Scenario 4
Access protocol parameters [EDCA with default parameters according to traffic class] Aggregation [A-MPDU / 64 MPDU aggregation size / BA window size, No A-MSDU, with immediate BA] Max # of retries Max retries: 10 RTS/CTS Threshold [No RTS/CTS] Association X% of STAs in an apartment are associated to the AP in the apartment; 100-X% of the STAs are not associated [X=100] Traffic model For Calibration: Use full buffer traffic only or Uplink only BE class For tests:
Aggregation [A-MPDU / max aggregation size / BA window size, No with immediate BA] Max # of retries 10 RTS/CTS Threshold [] Association X% of STAs associate with the AP based on highest RSSI in the same office; 100-X% of STAs are not associated. [X=100] Parameters for P2P (if different from above) Primary channels Traffic model Traffic (Per each cubicle) # Source/Sink Name Traffic definition Flow specific parameters AC Downlink D1 AP/STA1 Web browsing, Local file transfer T1 VI D2 AP/STA3 Web browsing, Local file transfer T3 BE Uplink U1 STA1/AP Web browsing, Local file transfer U2 STA3/AP Web browsing, file transfer P2P
Aggregation [A-MPDU / max aggregation size / BA window size, No A-MSDU, with immediate BA] Max # of retries 10 RTS/CTS Threshold [] Association X% of STAs are associated with the strongest AP, Y% of STAs are associated with the second-strongest AP, and Z% of STAs associate with the third-strongest AP. Z% of STAs are not associated. Detailed distribution to be decided. [X=100,Y=0,Z=0] Traffic model (per each BSS) - TBD # Source/Sink Name Traffic definition Flow specific parameters AC Downlink D1 AP/STA1 to Highly compressed video (streaming) T2 D2 to AP/STA20 Web browsing T4 D3 AP/STA21 to AP/STA30 file transfer T3 D4 AP/STA31 to AP/STA 70 Multicast Video Streaming T8 Uplink U1 STA1/AP to STA10/AP Highly compressed video (streaming) – UL TCP ACKs… U2 STA11/AP to STA20/AP Web browsing: – UL TCP ACKs… U3 STA21/AP to STA30/AP file transfer T3 U4 STA/AP31 to STA/AP 70 - - P2P P1 NONE (see interfering scenarios) Idle / Management M1 AP Beacon TX M2 STA36 to STA TBD Probe Req. TY Interfering Scenario for Scenario 3
References for traffic models 11-13/486, “HEW video traffic modeling” Guoqing Li et al, (Intel) [1] [2] 11-13-1059-01-hew-video-performance-requirements-and-simulation-parameters [3]11-09-0296-16-00ad-evaluation-methodology.doc [4] Rongduo Liu et al., “An Emperical Traffic Model of M2M Mobile Streaming Services ”, International conference C on Multimedia information networking and security, 2012 [5] JO. Rose, “ Statistical properties of MPEG traffic and their impact on traffic modeling in ATM systems ”, Tech report, Institute of CS in University of Wurzburg [6] Savery Tanwir., “A survey of VBR traffic models”, IEEE communication surveys and tutorials, Jan 2013