Hello,
On Wednesday 14 June 2006 12:54, Alexandra Cioroianu wrote:
> Hello everybody!
> I'm working with ns-2.29 on Mandriva 2006 and i'm working on a new
> protocol implementation, following the tutorial "Implementing a New Manet
> Unicast Routing Protocol in NS2" by Francisco Ros and Pedro Ruiz. At the
> paragraph 4.3.5 it shows the implementation of send_protoname_pkt()
> function and it shows how to send a packet introducing some jitter. My
> question is: why do they introduce jitter?
>
Periodic messages sent by neighbors are likely to get synchronized and
therefore the collision probability increases. Introducing a small random
jitter reduces that probability.
> Is it absolutely necessary?
>
Not at all.
> Could the packet be sent without jitter and how?
>
Of course, just put 0.0 instead of JITTER when scheduling the sending of the
packet.
Regards,
fran
> I know that jitter is the
> variation in time between packets ariving. isn't it more efficient to
> send packets at a constant interval? Please someone explain this to me, it
> is VERY IMPORTANT. Thank you in advance! Regards, Alexandra
>
>
>
> Alexandra Cioroianu
>
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