| Thread Links | Date Links | ||||
|---|---|---|---|---|---|
| Thread Prev | Thread Next | Thread Index | Date Prev | Date Next | Date Index |
| --- This message came from the IEEE 802.11 Working Group Reflector ---
From: *** IEEE stds-802-11 List ***
[mailto:STDS-802-11@xxxxxxxx] On Behalf Of Al
Petrick The
hand/head blockage is a real issue for mobile handsets and small mobile video
cameras. My experience testing embedded antennas for 2.4GHz and 5GHz
designs could yield a 10 dB loss or more in RF energy. This is dependent upon
the location of the antenna in the industrial design and the orientation of the
hand(s) and head. The antenna radiation pattern is directed away from the head,
to meet SARs specifications so this should be considered as well. [RR>] That is, handset antennas are not omni,
far from it, and even more so after loading by the human brain. We saw all these
issues down at 1-2GHz years ago. RR Al From: *** IEEE stds-802-11 List ***
[mailto:STDS-802-11@xxxxxxxx] On Behalf Of Vinko
Erceg --- This message came from the IEEE
802.11 Working Group Reflector --- Hi From: 정민호 [mailto:minho@xxxxxxxxxx]
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, From: Vinko Erceg [mailto:verceg@xxxxxxxxxxxx]
Hi. From: 정민호 [mailto:minho@xxxxxxxxxx]
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, _______________________________________________________________________________
If you
wish to be removed from this reflector, do not send your request to this
reflector - it will have no effect. Instead,
go to http://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11 and
then press the LEAVE button. If there
is no LEAVE button here, try http://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-RO.
Further
information can be found at: http://www.ieee802.org/11/Email_Subscribe.html
_______________________________________________________________________________
If you wish to be removed from this reflector, do not send your request to this reflector - it will have no effect. Instead, go to http://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11 and then press the LEAVE button. If there is no LEAVE button here, try http://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-RO. Further information can be found at: http://www.ieee802.org/11/Email_Subscribe.html _______________________________________________________________________________ _______________________________________________________________________________ If you wish to be removed from this reflector, do not send your request to this reflector - it will have no effect. Instead, go to http://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11 and then press the LEAVE button. If there is no LEAVE button here, try http://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-RO. Further information can be found at: http://www.ieee802.org/11/Email_Subscribe.html _______________________________________________________________________________ |