RE: [802.21] AW: [802.21] AW: [802.21] Tomorrow's Telecon material
Hello,
Some additional RTT estimates for interested readers.
>-----Original Message-----
>From: ext Kalyan Koora [mailto:kalyan.koora@BENQ.COM]
>Sent: Thursday, February 23, 2006 10:54 AM
>To: STDS-802-21@listserv.ieee.org
>Subject: [802.21] AW: [802.21] AW: [802.21] Tomorrow's Telecon material
>
>- it is not clear to me yet, what impact is going to come
> on MIHF protocol, if we include ACK as optional:
> + what type of timing issues are to considered between
> sending a MIHF packet and waiting for an ACK (pointed
> out in last teleconf)?
Srini> The timing is left to implementation. For IP transports, it depends
on how far the MIHF peer is located. Nominal RTT times for mainlands are
within 200ms (within continental US it is under 80ms) and transcontinental
RTT times are under 300ms. One could take these values as guidance for
simplicity if they do not want to compute their own.
[Reijo] And if needed, here are some RTT times for the some cellular
systems:
3G LTE - 68 ms
3G HSDPA - 194 ms
3G - 150-250 ms
EDGE - 350-700 ms
GPRS - ~900 ms (maybe also UMA?)
Sources:
http://www.tml.tkk.fi/Opinnot/T-110.5120/2005/slides/01a.Cellu-radio-nets.pd
f, slide 4
http://keskus.hut.fi/opetus/s383310/05-06/Kalvot%2005-06/pelkonen_181005.ppt
, slide 22
BR, Reijo