[aprssig] New n-N Paradigm FACTS

[Keith Allen]

Hi Bob,
             I've been way out of the loop for the last 6 weeks.  Family 
in hospital and didn't change my new email for the sig.  Can you explain 
the n-n paradigm to a simple fellow like me??


Robert Bruninga wrote:

>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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>  
>