Hi Mariana,
To my knowledge, there is
usually no limit on the use of a licensed band standard on License-exempt bands.
The only thing left after the specifications are published, it would be the co-existence
issues between unlicensed technologies and new technology, and it seems to me that
is belongs to the responsibility of TG h.
To me your question has simple
answer. And as in the previous email, the only thing I would like to point out is
the exact scope of MMR. And also put the differences of MMR with respect to the
existing MESH topology. It would help new people to develop new technology
without confusion. At least to those who already participated in the one year
terms of MMR Study group, I believe there is some level of consensus. The only reason
that I sent out the previous email for clarification is for somebody may not be
able to attending the face to face meeting.
I believe it would be encourages
to define what it is in the current specifications for those people who are distinguishably
interested in the either MESH or MMR. After we define the exact terms than we
may create something for each, I would rather discourages to mix up something
should not.
If I answer your 2nd
question, it would be appreciated for you to take a look at one of the meeting
minutes of the 802.16 Study group for MMR. I think it is very easy to agree the
people in the Study group have very good sense of consensus on the scope of approved
PAR.
If somebody want something
more than the scope of the approved MMR PAR, I would encourage them create
another new PAR with that specific concern. But, if I were not misunderstood
your point, it seems like could be discussed under the scope of the MMR PAR for
those concerns you would like to tell us. Of course, it depends on issues. Bring
it on.
Thanks and regards
Panyuh Joo
============================
Samsung Electronics Co., LTD
===============================
From:
Mariana Goldhamer [mailto:marianna.goldhammer@alvarion.com]
Sent: Tuesday, May 30, 2006 12:54 AM
To: Panyuh;
STDS-802-16@listserv.ieee.org
Subject: 802.16 - Artificial
limitations (was mesh vs multihop relay netwo rks)
I agree with every word
you have written below, because you used different existing documents which
give a good basis for your explanations.
What I do not really like
is that we continue to narrow the 802.16e market, based on the separation
according to regulatory regimes. We see more and more small licensed spectrum
allocations (20MHz/operator), which actually limit the BWA
performance. The LE spectrum, when available, should be used for the
infrastructure or outdoor coverage, including Relaying, as a complement to the
Licensed solutions. We continue to negate the 500MHz in 5GHz (available almost
world-wide) and to say NO, thank you, even if the spectrum is suitable for
outdoor-to-outdoor links, and only partially used, it is not for us.
I think that we
should differentiate between the scope of a PAR (which give a focus to the
Project) and the usage of the resulting MAC/PHY protocols for products addressing the variety
of available spectrum.
Can anybody explain, for
example:
- WHO can actually
stop a MAC message or a PHY mode, defined in 802.16e, to be used in
products addressing not-licensed regulatory regimes?
- Why we extend the focus
of a Project to what is implemented in the products?
We should look how to put
everything in order, make the standard compliant with the market requests, and
repair asap the existing confusion and artificial limitations. I have some
ideas.
-----Original Message-----
From: Panyuh
[mailto:panyuh@SAMSUNG.COM]
Sent: Monday, May 29, 2006 11:41 AM
To: STDS-802-16@listserv.ieee.org
Subject: Re: [STDS-802-16] mesh vs
multihop relay networks
Opps, there are some typo.
So I correct it as followings.
From:
Panyuh [mailto:panyuh@samsung.com]
Sent: Monday, May 29, 2006 4:26 PM
To: STDS-802-16@listserv.ieee.org
Subject: Re: [STDS-802-16] mesh vs
multihop relay networks
Dear Ramzi and all,
If we read the PAR of
MMR task group, it is easy to understand the relay is not related to the mesh
network in 802.16-2004 at all.
Because in the context
of the 802.16-2004, the mesh topology is defined under unlicensed spectrum and
using only OFDM as PHY layer.
But, the 16 MMR is
limited project for only an amendment of 16-2004 + 16e-2005 with licensed
spectrum and it is definitely not related to mesh topology at all.
So as to the context of
802.16 the MMR is amendment of PMP (point to multipoint) topology with licensed
spectrum. So either OFDM or OFDMA or SCa PHY is in the scope of MMR, but only PMP with
licensed spectrum use.[Panyuh]
I believe these are the conclusion of MMR Study group.
Please take a look at
the PAR of 16 MMR : P802.16j
Thanks and regards.
Panyuh Joo
============================
Global
Standards & Research
Telecommunication R&D Center
Telecommunication Network
Samsung Electronics Co., LTD
===============================
From:
Jose Costa [mailto:costa@NORTEL.COM]
Sent: Saturday, May 27, 2006 12:19 PM
To: STDS-802-16@listserv.ieee.org
Subject: Re: [STDS-802-16] mesh vs
multihop relay networks
Hi Ramzi,
A multihop relay network
is generally a partial mesh network.
Here are some definitions
from the Preliminary draft new Recommendation ITU-R M.[8A/VOC.LAND.MOB] -
Vocabulary of terms for the land mobile service (Annex
18 to Doc. 8A/376):
A mesh network is a network in which there are two
or more paths to any node.
NOTE - There are two types of mesh
networks: full mesh and partial mesh. In a full mesh every node is connected to
every other node in the network. In a partial mesh some nodes may be organized
in a full mesh scheme but others can only connect to some nodes in the network.
A radio relay network is a network of relay stations.
NOTE 1 - Relay networks can be one-hop or
multi-hop. One-hop relays are implemented with P-P and/or P-MP techniques.
Multi-hop relays are implemented using MP-MP techniques to form a mesh.
NOTE 2 - The relay stations in a network can be fixed, nomadic or mobile.
A relay station is a station that performs message/signal transfer
without any reference to a user application.
I hope this is useful.
Regards,
José
From:
Ramzi Tka [mailto:ramzi.tka@GMAIL.COM]
Sent: 26-May-06 07:35 AM
To: STDS-802-16@listserv.ieee.org
Subject: [STDS-802-16] mesh vs
multihop relay networks
Hi evryboby,
Could anyone explain to me the difference between mesh networks and multihop
relay networks !
Thanks