Scenario Name Topology Management Channel Model Homogeneity ~Traffic Model 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 - Dense 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 - Dense small BSSs, uniform e.g. ~10-20m inter AP distance ~100s of STAs/AP, P2P pairs Mobile 4 Outdoor Large 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 Large 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 models.
[fixed MCS0 and MCS7] GI [Long] Data Preamble [5GHz, 11ac] STA max TX power 17dBm EIRP per antenna AP max TX Power 21dBm EIRP per antenna AP #of TX antennas 2,4 [1] AP #of RX antennas 2,4 [1] STA #of TX antennas 1, 2 [1] STA #of RX antennas 1, 2 [1] AP antenna gain +2dBi [0dBi] STA antenna gain 0dBi Noise Figure [7dB] MAC parameters Access protocol parameters [EDCA with default parameters according to traffic class] Primary channels 2.4GHz: 1, or 3 different channels are used as primary channel. 5GHz: 1, 3, 5, or 7 different channels are used as primary channel. Random Channel Assignment [All on same primary channel] [random assignment of 3 non-overlapping channel in 2.4GHz]
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 Dowlink only or Uplink only BE class For peformance tests: Traffic model (Per each apartment) - TBD # Source/Sink Name Traffic definition Flow specific parameters AC Downlink D1 AP/STA1 Buffered streaming 200Mbps/N (4k 20Mbps for N=10); VI … VI DN AP/STA_N Buffered video streaming 200Mbps/N (4k 20Mbps for N=10); VI Uplink U1 STA1/AP 1.5Mpbs UN STA_N/AP 1.5Mpbs P2P (optional P1 STA_{N1+1}/STA_{N1+2} Buffered video streaming 10Mbps VI
In order to focus this scenario on the issues related to high density, the channel model is considered as a large indoor model (TGn F). Note that robustness to outdoor channel models, which is also a requirement for some usage models in category 1 (like outdoor stadiums), is captured in the outdoor large BSS scenario. It is important to define a proportion (TBD %) of legacy devices in the scenario that won’t implement the proposed solution evaluation to ensure that the solution will keep its efficiency in real deployments (some solutions may be sensitive to the presence of legacy devices while other won’t). These legacy devices shall simply keep the baseline default parameters and shall not implement the proposed solution under evaluation. Those devices can be: STAs connected to the planned network APs and STAs part of the interfering network Parameter Value Topology (A) Figure 6 - BSSs layout (partial) Figure 7 - Layout of BSSs using the same channel in case frequency reuse 3 is used Environment description BSSs are placed in a regular and symmetric grid as in Figure 6 for frequency reuse 1 and Figure 7 for frequency reuse 3. Each BSS in Figure 6 has the following configuration: BSS radius: R meters (7m [#1248] / 12m [Stadium, #722,#1079] TBD) Inter BSS distance (ICD): 2*h meters h=sqrt(R2-R2/4) [R=7m] APs location AP is placed at the center of the BSS, with antenna height TBD AP Type {HEW} STAs location STAs are placed randomly in a BSS at a minimum distance TBD from the AP in X-Y plane [TBD=1m]