Table 3 Routing establishment of IEBR

1:

Query packet = Q_p

2:

Depth threshold = h_th

3:

Depth of Node i=h_i

4:

Depth difference between node i and j=h_diff(i, j)

5:

RNT:Relay Node Table

6:

When neighbor j receiving Q_p

7:

if h_i<h_j then

8:

if h_diff>h_th then

9:

Algorithm 1

10:

if N_j=min(N_j) then

11:

Add node ID in RNT

12:

else

13:

drop Q_p

14:

end if

15:

end if

16:

end if