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Riadh Marrakchi | 1 Oct 2002 11:43
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Question about traces (r,s,f,d)??

Hi,
the first column of the trace files (new traces) of the AODV simulation
just confused me a little bit.
s: is written once when the source sends a packet
d: when a packet is dropped by some node (this line is also found only
one time in the trace file when a packet is dropped)
r: when a packet arrives at the destination
f: when a packet is forwarded by some node.
so let's assume node 1 tries to send a packet to node 3 through node 2.
Node 1 sends (first column: "s") the packet, node 2 forwards ("f") it
and node 3 receives ("r") it. Is it right??? I mean doesn't node 2 first
receives ("r") the packet then forward it ("f")????
Normally we would get: Total of sent cbr packets = total of dropped cbr
packets + total of received cbr packets. But while analysing my trace
files i get:  Total of sent cbr packets < total of dropped cbr packets +
total of received cbr packets. Although the difference is not that big,
i would know how it exists???
Total of sent cbr packets: Lines with s at the beginning and cbr as
packet type
total of dropped cbr packets: Lines with d at the beginning and cbr as
packet type
total of received cbr packets:Lines with r at the beginning and cbr as
packet type

Thanks a lot for any help or comment.
Riadh
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Christian Bettstetter | 1 Oct 2002 12:58
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CfP MoMuC2003 - Munich, Germany

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 CfP MoMuC 2003 - Munich, Germany
 http://www.cdtm.de/momuc/Download/CfP.pdf
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              Announcement and Call for Papers / Submissions

         Mobile Multimedia Communications Conference (MoMuC) 2003
       The First Interdisciplinary International Conference on Mobile

                         Business and Technology

        "Opening Up New Frontiers in Mobile Business and Technology"
                  6-8 October 2003, Munich, Germany

         refer to http://www.momuc.org or http://www.cdtm.de/momuc

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Zhenqiang(Frank) Ye | 1 Oct 2002 17:58

Re: Question about traces (r,s,f,d)??

  You can not use the method you described. See the example below:
(The transport and IP layer trace are ON)
s 2.199994566 _1_ AGT  --- 6 cbr ....
r 2.199994566 _1_ RTR  --- 6 cbr ....
s 2.199994566 _1_ RTR  --- 6 cbr ....
r 2.200547959 _2_ RTR  --- 6 cbr ....
f 2.200547959 _2_ RTR  --- 6 cbr ....
r 2.201817971 _3_ AGT  --- 6 cbr ....

  The packet 6 is marked "cbr" all the time. It is sent by node 1 two
times (at different layers), and is received 3 times (by different nodes
and different layers). That is why your method does not work. In order
to compute correctly, you need to add "AGT" in your filter when you cout
the number of packets "sent" and "received".

  Hope it helps,

Zhenqiang(Frank)

On Tue, 1 Oct 2002, Riadh Marrakchi wrote:

> Hi,
> the first column of the trace files (new traces) of the AODV simulation
> just confused me a little bit.
> s: is written once when the source sends a packet
> d: when a packet is dropped by some node (this line is also found only
> one time in the trace file when a packet is dropped)
> r: when a packet arrives at the destination
> f: when a packet is forwarded by some node.
> so let's assume node 1 tries to send a packet to node 3 through node 2.
(Continue reading)

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#GUPTA ROHIT# | 2 Oct 2002 04:52
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signal to noise ratio(SNR) and GPS info..


	 
	Dear all,
	can anyone let me know on the work done on SNR and GPS to improve AODV.
	 
	rgds
	rohit
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Riadh Marrakchi | 2 Oct 2002 09:44
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Re: Question about traces (r,s,f,d)??

Hi,
the RTR Traces are set off in my simulation scripts, so that i get only the
AGT traces.

"Zhenqiang(Frank) Ye" wrote:

>   You can not use the method you described. See the example below:
> (The transport and IP layer trace are ON)
> s 2.199994566 _1_ AGT  --- 6 cbr ....
> r 2.199994566 _1_ RTR  --- 6 cbr ....
> s 2.199994566 _1_ RTR  --- 6 cbr ....
> r 2.200547959 _2_ RTR  --- 6 cbr ....
> f 2.200547959 _2_ RTR  --- 6 cbr ....
> r 2.201817971 _3_ AGT  --- 6 cbr ....
>
>   The packet 6 is marked "cbr" all the time. It is sent by node 1 two
> times (at different layers), and is received 3 times (by different nodes
> and different layers). That is why your method does not work. In order
> to compute correctly, you need to add "AGT" in your filter when you cout
> the number of packets "sent" and "received".
>
>   Hope it helps,
>
> Zhenqiang(Frank)
>
> On Tue, 1 Oct 2002, Riadh Marrakchi wrote:
>
> > Hi,
> > the first column of the trace files (new traces) of the AODV simulation
> > just confused me a little bit.
(Continue reading)

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Kartik Rao | 2 Oct 2002 15:53
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MANET routing protocol

All,

Does anyone know what the most common MANET routing protocol used is?

Thanks,
Kartik

----------
Kartik Rao
Senior Modeling Engineer
OPNET Technologies
krao <at> opnet.com
www.opnet.com

==========================================
Register for OPNET's Online Technology Workshops
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John Paul O'Grady | 2 Oct 2002 16:05
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ip address allocation

Hello

I have a question in regards to ip address allocation in an ad hoc
environment. In an ad hoc environment presumely ip addresses will be
allocated dynamically to new nodes as they attach themselves to the
network.

Is there much research out there into how exactly this will be done. 
I know in a normal network it can be done through a dhcp server, but
in an ad hoc environment you cant really assume a dhcp server will be
available.

john paul o grady
cit 
ireland

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John Paul O'Grady | 2 Oct 2002 16:05
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Favicon

ip address allocation

Hello

I have a question in regards to ip address allocation in an ad hoc
environment. In an ad hoc environment presumely ip addresses will be
allocated dynamically to new nodes as they attach themselves to the
network.

Is there much research out there into how exactly this will be done. 
I know in a normal network it can be done through a dhcp server, but
in an ad hoc environment you cant really assume a dhcp server will be
available.

john paul o grady
cit 
ireland

-------------------Legal  Disclaimer---------------------------------------

The above electronic mail transmission is confidential and intended only for the person to whom it is
addressed. Its contents may be protected by legal and/or professional privilege. Should it be received
by you in error please contact the sender at the above quoted email address. Any unauthorised form of
reproduction of this message is strictly prohibited. The Institute does not guarantee the security of
any information electronically transmitted and is not liable if the information contained in this
communication is not a proper and complete record of the message as transmitted by the sender nor for any
delay in its receipt.

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idc | 2 Oct 2002 16:35
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signal to noise ratio(SNR) and GPS info..

The paper

Coping with Communication Gray Zones in IEEE 802.11b based Ad hoc Networks
Henrik Lundgren, Erik Nordström, Christian Tschudin (Uppsala
University, Sweden)

Looks at using SNR to improve AODV.

Ian Chakeres

#GUPTA ROHIT# writes:
 >  
 > 
 > 	 
 > 	Dear all,
 > 	can anyone let me know on the work done on SNR and GPS to improve AODV.
 > 	 
 > 	rgds
 > 	rohit
 > 
 > _______________________________________________
 > manet mailing list
 > manet <at> ietf.org
 > https://www1.ietf.org/mailman/listinfo/manet
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Erik Nordström | 2 Oct 2002 16:44
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Re: signal to noise ratio(SNR) and GPS info..

Just a note.

This paper has been published at WoWMoM 2002.

Erik Nordström

On Wed, 2002-10-02 at 16:35, idc <at> engineering.ucsb.edu wrote:
> The paper
> 
> Coping with Communication Gray Zones in IEEE 802.11b based Ad hoc Networks
> Henrik Lundgren, Erik Nordström, Christian Tschudin (Uppsala
> University, Sweden)
> 
> Looks at using SNR to improve AODV.
> 
> Ian Chakeres
> 
> #GUPTA ROHIT# writes:
>  >  
>  > 
>  > 	 
>  > 	Dear all,
>  > 	can anyone let me know on the work done on SNR and GPS to improve AODV.
>  > 	 
>  > 	rgds
>  > 	rohit
>  > 
>  > _______________________________________________
>  > manet mailing list
>  > manet <at> ietf.org
(Continue reading)

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