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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.

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

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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