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Re: [STDS-802-16] question on OFDMA-based periodic ranging

Hi Mary,
 
Looking at figure 85, I think T4 does not directly cause the MAC to re-initialize. Is there any issue with T4 except it being defined as minimum 30s that requires defining a new timer for OFDMA?
 
Yigal
-----Original Message-----
From: owner-stds-802-16@listserv.ieee.org [mailto:owner-stds-802-16@listserv.ieee.org]On Behalf Of Mary Chion
Sent: Wednesday, April 28, 2004 12:09 AM
To: STDS-802-16@listserv.ieee.org
Subject: Re: [STDS-802-16] question on OFDMA-based periodic ranging

Yigal,
 
Thanks for the clarification. For non-OFDMA based periodic ranging, when T4 times out, MAC is re-initialized and the frequency of periodic ranging is controled by BS using T27. For OFDMA based period ranging, it seems to be not too appropriate to use the same T4 timer for periodic ranging timer. Should we define a new timer for OFDMA periodic ranging?
 
Thanks.
 
Mary
 
 
-----Original Message-----
From: owner-stds-802-16@LISTSERV.IEEE.ORG [mailto:owner-stds-802-16@LISTSERV.IEEE.ORG]On Behalf Of Yigal Leiba
Sent: Tuesday, April 27, 2004 7:20 AM
To: STDS-802-16@LISTSERV.IEEE.ORG
Subject: Re: [STDS-802-16] question on OFDMA-based periodic ranging

Hi Mary,
 
It is indeed T4, and it is long because the original values were intended for Fixed service, not mobile.
 
Yigal Leiba
-----Original Message-----
From: owner-stds-802-16@LISTSERV.IEEE.ORG [mailto:owner-stds-802-16@LISTSERV.IEEE.ORG]On Behalf Of Mary Chion
Sent: Monday, April 26, 2004 11:52 PM
To: STDS-802-16@LISTSERV.IEEE.ORG
Subject: [STDS-802-16] question on OFDMA-based periodic ranging

Hi,
 
In section 6.3.10.3, it's stated " Using the OFDMA ranging mechanism, the periodic ranging timer is controlled by the SS, not the BS". Is this Periodic ranging timer T4 as in Fig 85 or is this a seperate timer? It seems that the T4 value is too long to be served as a periodic ranging timer.
 
Thanks.
 
Mary Chion