Detect duplicate message (to not send twice same data)

detobel36 / ProjectMobileEmbeddedComputing

Project for the cours Mobile and Embedded Computing

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Detect duplicate message (to not send twice same data) #17

Closed detobel36 closed 4 years ago

detobel36 commented 4 years ago

Also detect doublon in Sensor node when transfer

detobel36 commented 4 years ago

Problem:

Node 2.0 send packet with id 0 to 5.0 Node 2.0 send packet with id 1 to 4.0 Node 2.0 send packet with id 2 to 3.0 Node 2.0 send packet with id 3 to 6.0 Node 2.0 send packet with id 0 to 5.0 So node 5.0 detect duplicate...

detobel36 commented 4 years ago

Use a simple way to detect duplicate.

First identify where duplicate could occur:

rank packet No impact. Have twice one information doesn't change anything
valve packet Simplification: come always from parent. Only one sequence number to save
data packet More complicated. Must save the last id of each children. But no obligation to have the same ID from the leaf to the root. Only between two node. So only for "data_packet".