[aprssig] New n-N Paradigm FACTS

[GARCIA]

Hi Bob !


 I have tried to get APRSTEST.EXE but I think

 my provider [uol.com.br] are blocked there,

 then I can't get access to www.ew.usna.edu.


 Have you another site where I can get it ???


Best Regards !

Sorry for my English !

Um ]


PU2UGK

  Jose Roberto Garcia
Sao Jose dos Campos - SP - Brasil


----- Original Message ----- 
From: "Robert Bruninga" <bruninga at usna.edu>
To: <aprssig at lists.tapr.org>
Sent: Monday, January 24, 2005 7:09 PM
Subject: Re: [aprssig] New n-N Paradigm FACTS


> I posted my Packet Analysis program that I used to get
> these numbers below.  Just capture an hour of packets
> with your TNC and run APRSTEST.EXE and it will generate
> these results.   Here is a
> 
> Screen shot:
> http://www.ew.usna.edu/~bruninga/aprs/aprstestpix.gif
> 
> and you can Download APRSTEST.EXE:
> http://www.ew.usna.edu/~bruninga/aprs/aprstest.exe
> 
> >>> bruninga at usna.edu 1/22/05 4:16:21 PM >>>
> >This is the real truth about the New n-N Paradigm.
> >WITH NUMBERS!
> 
> %users   %pkts   path used
>   7%          3%       RELAY or WIDE only
> 35%        27%      RELAY,WIDE or WIDE,WIDE
> 26%        50%      RELAY,WIDE,WIDE or WIDE,WIDE,WIDE
> 14%          5%      WIDE2-2
> 24%         10%     WIDE3-3
>   3%           7%     WIDE4-4
> 
> Notice that one fourth of the users are responsible for HALF
> of all packets.  They are using the very inefficient W,W,W
> or R,W,W path.  We must get away from this kind of path
> in APRS.  
> 
> What is immportant above is the ratio of packets to the
> number of users of a given path.  The paths with the
> smallest ratio of packets per user is, of course, more efficient.  
> Re-arranging the table from most efficient to least is revealing:
> 
> %Users  %pckts  Factor  Path
> 14%          5%      2.8    WIDE2-2
> 24%         10%     2.4   WIDE3-3
>   7%           3%    2.3    WIDE
> 35%         27%    1.2    WIDE,WIDE
> 26%         50%     0.5   WIDE,WIDE,WIDE
>   3%           7%     0.4    WIDE4-4
> 
> Notice the factor column.  W2-2 is almost 3 times more efficient
> than W,W.  W3-3 is 5 times more efficient than W,W,W!
> 
> Now compare the New n-N Paradigm receommendation of
> W2-2 to the most common east coast W,W,W and the factor 
> is a SIX TIMES REDUCTION in volume of packets.  Imagine how 
> much more reliable our network can be if it efficiency improved 
> by a factor of SIX!
> 
> Lets DO IT.  Use WIDE2-2 in WIDEn-N areas and SS2-2 in
> states moving to the SSn-N scheme.
> 
> Lets move out on the New n-N Paradigm NOW.
> 
> de WB4APR, Bob



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