[ns] neighbor discovery in wireless simulation

[hamide]

Hello dear reseachers
I'm a newbie in NS and i'm implementing a routing agent with wireless node.
I've a question about how to recognize neighbor. there's a Phy/WirelessPhy
set Pt_ value that can be set to have a special range,so we have those
neighbor,but choosing the right value is not easy,also there's a radius
field for each mobile node that can be set.it's written that neighbor inside
these range will be recognized as neighbor. as i could undrestand i should
get the position of nodes and then calculate distance of each node to
neighboring node,then use radius field to filter other nodes from my
neighborhood. is it right? isn't it too timeconsuming? how may i know how
much it effect performance of my work if any? and then what's the right way
to recognize neighbors in wireless simulation?

thx in advance
hamide 

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