I am implementing an enhanced objective function for RPL. Control messages and data packets of UDP applications are being transmitted. Now the question is that if any data packet which is being transmitted from any source node to sink node is dropped, how it possible to re-transmit it? which function and which method at source node is responsible to do this task?
Thank You
The RPL DODAG is for routing; it is unrelated to retransmission.
There is no re-transmission in UDP. You will need to configure TCP for re-transmission.
Dear Rashid Rasheed,
in the application of RPL, a monitoring function -- a so-called Time-Out Function (TOF) -- must be implemented. This TOF should ensure that every RPL message lost during transmission is retransmitted.
Please refer:
https://www.researchgate.net/publication/326960497_RPL_messages_and_their_structure
See figure 2 under the address:
https://www.researchgate.net/publication/320003101_Protocol_structure_of_6LoWPAN_devices
https://www.researchgate.net/publication/320003101_Protocol_structure_of_6LoWPAN_devices/figures
Best regards and much success
Anatol Badach
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