Algorithm 2. Slot scheduling of 2-hop node

1:  At node xi that receives LSSI(x): 2:    $startLSI=startLSI+{\displaystyle {\sum }_{j=1}^{i-1}SD(x_j)};$ 3:    get Alloc(xi) starting with startLSI; 4:    psiAlloc(xi) = ascSort {psi(v)| v ∈ Alloc(xi)}; 5:    TxSlots(xi) = {x| x ∈ psiAlloc(xi), x is in odd position};