RE: stds-802-16-mac: TG3 Criteria and/or Functions for Choosing from Different MAC Proposals
At the last 802.16.3 meeting on Monday an AdHac committee was set up to come
up with Criteria for choosing from the different TG3 MAC proposals. We met
Monday Evening and brain stormed on the TG3 MAC requirements. On the top of
the list were the TG1 MAC requirements. Then a number of additional
requirements were identified beyond the TG1 MAC requirements.
We are now having discussion on the brain storming items to see whether the
list is redundant and whether we understand all items on the list and
whether we like everything identified on the list.
Could you have any comments on the list and/or what I said?
Dr. Demosthenes J. Kostas
Director, Industry Standards
Adaptive Broadband Corporation
3314 Dartmouth Ave
Dallas, TX 75205 USA
tel: 214 520 8411
fax: 214 520 9802
-----Original Message-----
From: Phil Guillemette [mailto:PGuillemette@spacebridge.com]
Sent: Friday, February 02, 2001 8:48 AM
To: Kostas, Demos; stds-802-16-mac@ieee.org
Subject: RE: stds-802-16-mac: TG3 Criteria and/or Functions for Choosing
f rom Different MAC Pro posals
Hi Demos,
I am a little confused. I though that the adhoc group was mandated to
produce a set of functionality that will be required for TG3 systems. Once
the list is generated, we to then verify whether this functionality was
supported in the current 802.16 MAC that is being drafted and present
required changes if the current MAC is deficient. From your email, it
sounds like we are selecting/creating a different MAC all together. Which
one are we doing?
Phil
-----Original Message-----
From: Kostas, Demos [mailto:dkostas@adaptivebroadband.com]
Sent: Friday, February 02, 2001 10:41 AM
To: stds-802-16-mac@ieee.org
Subject: stds-802-16-mac: TG3 Criteria and/or Functions for Choosing
from Different MAC Pro posals
It has been proposed by R.Marks that we carry discussions over this address.
So let me repeat for the benefits of the new email addressees.
On Monday 1/28/01 the TG3 appointed an AdHac Group to Develop a Set of
Criteria for Choosing the TG3 MAC from the TG3 MAC Proposal. The group met
Monday evening and as result the following TG3 MAC Selecting Criteria list
were identified, with the understanding that the group will work to refine
these Criteria. I thus call on those who contributed and anyone else who
wishes to assist, to comment on how to improve the list that follows. I
am thus emailing the list of TG3 MAC Selection Criteria for Comments with
the objective of presenting the refined Criteria to TG3 for their
consideration. This will be in lieu of having the TG3 chair toss an unbiased
coin or use Tarrot cards for making the Subject TG3 decision.
As the chair of the ADHac Group, I want to thank those that contributed to
the list of Criteria that follows.
TG3 Proposed MAC Selection Criteria
1. System Requirements
2. Access Delay and Variance
3. Payload and Bandwidth Efficiency
4. Implementation Simplicity and Complexity
5. Scalability
6. Service Support Flexibility/Flexibility to support a wide
range of Services
7. Robustness for Recovery from total loss/ How does a proposed
MAC respond to such situations
8. System Security
9. Maturity of technology
10. Sign-on Procedures; Resolving Ranging
11. Adequacy of Management Functions
12. Convergence with existing Protocols (e.g., WAN/LAN
Protocols)
13. Ability to work with a number of Physical Layers
14. Efficient handling of traffic(e.g., IP and VoIP)
15. Robustness: How well does the MAC respond to Multipath and
interference
16. MAC support of TG3 PHY(s) ranging procedures
17. MAC time required to respond to changing user traffic
changes
18. MAC Support UL and DL ARQ
19. Segmentation and Concatenation
20. Flexible Frame Length/ Capability to change Frame length on
a per frame basis
21. Flexibility to support future capabilities(e.g., electronic
steerable antennas)
22. Flexible MAC Header Formats
23. PHY dependent time measurement units
24. Total expected throughput
(NOTE: The initial items of the above list are from the TG1 MAC)
List of AdHac Participants/Volunteers
Demos Kostas
Subbu Ponnuswamy
Subir Varma
Wenhan Zhang
Heinz Lycklama
Bob Nelson
Ken Peirce
Jacob Jorgensen
Vladimir Yanover
John Liebetreu
M.Ashtijou
C Shirali
P.Guillemette
I. Kitroser
Z. Haddad
J. Zuniga
It has now also been proposed that we don't look for Criteria for
choosing the TG3 MAC but Identify the Functions of the TG3 MAC we desire.
As I do not want to get into the Semantics of it but rather to
identify those differentiable aspects of the TG3 MAC that will permit us to
choose from the different TG3 MAC configurations the one that has the
desired functions/features..., I am seeking your views on where we go from
the above list of Criteria/Functions/features to derive/choose the TG3 MAC.
Do we consolidate, rank, quantify, ... .Your thoughts please. .
Do we scrap it all and seek a benevolent guru for advice?
Dr. Demosthenes J. Kostas
Director, Industry Standards
Adaptive Broadband Corporation
3314 Dartmouth Ave
Dallas, TX 75205 USA
tel: 214 520 8411
fax: 214 520 9802