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[STDS-802-11-TGBE] Comments on DCN508r1 Reachability Problem



Hi Abhishek,

 

  Thank you for your presentation. I have two comments on your contribution.

 

·           Your proposed solution relies on the accuracy of the selected pathloss model. In different scenarios, the channel pathloss models are different from each other. The question is how to select the pathloss model? If the estimated pathloss is much different from the actual value, this will cause that non-AP MLD make the wrong decision.

·           In your Slide, you only consider the reachability of downlink. But in the actual deployment, the asymmetry between downlink and uplink often exists. Hence, I think if you want to the estimation of downlink reachability for other non-transmitted links, you also need to do the estimation of uplink reachability for other non-transmitted links . In order to do the estimation of both downlink and uplink reachability during the discovery phase, the AP MLD needs to indicate the antenna gain except of Tx power for each affiliated AP. The reason is that, if different links use separated antennas, the antenna gain may be also very different. According to the Wi-Fi antenna products in the market, the range of antenna gain is 3 dBi-18 dBi for 2.4 GHz frequency band. And the range of antenna gain is 7 dBi-23 dBi for 5 GHz frequency band.

 

 

BR

Guogang Huang

 


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