Re: [STDS-802-11] Questions on HEW channel modeling issues

[Edward Reuss <edreuss@xxxxxxxxx>]

--- This message came from the IEEE 802.11 Working Group Reflector ---

I can back that up from our experience in very dense environments (rock concerts & music festivals) with 0.5 to 1.0 people/m^2 or even higher, where we see a 20 dB drop in signal strength or higher in my path loss calculations and in practice at 5 GHz. Unfortunately, this is just an ad hoc observation, rather than something that can be added to the channel model.

On Tue, Jul 16, 2013 at 8:47 AM, 정민호 <minho@xxxxxxxxxx> wrote:

--- This message came from the IEEE 802.11 Working Group Reflector ---

Hi Vinko,

 

Correct. It can be seen that most of HEW usage models especially among high density STAs deployment have 0.5~1.0 users / m2.

Maybe in many cases, devices is not likely to have LOS link to AP for those usage models.

Thanks.

 

Regards,

 

Minho

 

From: Vinko Erceg [mailto:verceg@xxxxxxxxxxxx]
Sent: Tuesday, July 16, 2013 4:27 PM
To: 정민호; shahrnaz.azizi@xxxxxxxxx
Cc: Ron Porat; eldad.perahia@xxxxxxxxx; minyoung.park@xxxxxxxxx; 'STDS-802-11@xxxxxxxxxxxxxxxxx'
Subject: Re: Questions on HEW channel modeling issues

 

Hi. Minho, do you mean that people are standing next too each other so that there is human blockage?

Thanks,

Vinko..
 

From: 정민호 [mailto:minho@xxxxxxxxxx]
Sent: Tuesday, July 16, 2013 06:18 AM
To: Vinko Erceg; shahrnaz.azizi@xxxxxxxxx
Cc: Ron Porat; eldad.perahia@xxxxxxxxx; minyoung.park@xxxxxxxxx; STDS-802-11@xxxxxxxxxxxxxxxxx <STDS-802-11@xxxxxxxxxxxxxxxxx>
Subject: Questions on HEW channel modeling issues
 

Hi Vinko and Shahrnaz,

 

Thanks for your introductory presentation on channel model today.

Could I ask some question on HEW outdoor channel modeling as follows?

-       Is there any mismatch problem if we simply apply the cellular-based outdoor channel models to the HEW outdoor environments, in most of which so many people are populated within a very limited area (over than 0.5 person / m^2)?

-       Even though it’s 5GHz band (not millimeter wave), I have some doubt on whether we may need to additionally define side effects such as human body blockage due to too high density of deployment or not.

 

Thanks a lot.

 

Best Regards,

 

Minho

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