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