Low-Delay Opportunistic Routing with Reducing Overhead in Asynchronous Duty-Cycled Wireless Sensor Networks

Algorithm 1

LDORRO scheme.

  When network is deployed do

1:    Sink node broadcasts ,

2:    For each node such as do

3:      Get and calculate , by (5) and (6)

4:      Establish candidate set by

5:    End for

6:  End

7:  For each node such as do

8:    If gets packet in buffer (generated or received) do

9:   If is a neighbor node of the sink node do

10:    Send data packets to sink node

11:  Else do

12:   Send preamble to data packet to

13:  If received ACKs from do

14:   Calculate the metrics of nodes which send ACKs

15:   Select one node such as as forwarder

16:  Else do

17:    recalculates and rebuilds

18:  End if

19: End for