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Hi, Thanks for the reply. If this is the case,
then 8.4.3.2 should be changed to something like: A segment is ……, which may be
used for one sector of a base station. I bet most of people in the classical
wireless world prefer the classical wireless language. Dr. Will Liew Andrew Corp. 434-386-5212 From: Elad Eyal
[mailto:Elad.eyal@comsysmobile.com] Hello My understanding of 8.4.3.2 is different
than yours. The sentence “One segment is used for deploying a single instance
of the MAC” is not a justification for the existence of a segment. Rather it
means: Different segments have different, orthogonal MACs. The classical use for segments would be
similar to sectors in GSM: split a BS coverage area to three segments providing
better interference management. Software Architect Comsys Tel +972 (9) 9717895 Fax +972 (9) 9717887 elad.eyal@comsysmobile.com From: Liew, William
[mailto:William.Liew@ANDREW.COM] Hi, Colleagues, I have some questions when I am trying to
implement the 802.16e Section 8.4: 1. In 802.16-2004 (and 16e) Section 8.4,
the concepts of symbol, subcarrier, subchannel, carrier-set, bin, tile, slot,
data region, burst, segment, permutation zone, frame, multiframe are used. It
seems that some of them are not well defined/described, and the number of them
is far more than other standards such as IS-2000, UMTS, IS-136 and GSM used. Is
it possible to make this number smaller? 2. Question about Segment: (2.1) Segment is vaguely
defined in 8.4.3.2. According to 8.4.3.2, the justification of using this
concept seems to be that it is used to deploy a single instance of MAC. Is this
concept used in the MAC layer? If yes, its relation to the MAC layer should be
clearly described. If not, then the concept might be merged into other concepts
such as subchannel, data region, burst, et al. (2.2) The concept of
Segment is used in 8.4.6.1.1 for Preamble. Preamble is purely a PHY layer
concept and has nothing to do with MAC layer. This seems to contradict against
the definition of Segment in 8.4.3.2. (2.3) The concept of
Segment is used in 8.4.4.4 for FCH subchannel allocation. If the concept of
subchannel is used here, why is it needed to use Segment? (2.4) The word Segment is
used again in 8.4.3.4 for totally different meaning. 3. It seems that the concepts of bin and tile
are used but never defined. Thanks for your help in advance. Dr. Will Liew Andrew Corp. 434-386-5212
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