An Efficient Anycast Mechanism for 802.15.4-TSCH to Improve QoS in IIoT

Algorithm 1

Parent selection in the proposed method.

1:  Inputs:

     linksPDR: List of all links with their PDR

     nodes: List of all nodes in topology

2:  Outputs:

     parentList: List of three parents, respectively

3:  Initialization:

     parentsList ← ()

     maxChild ← 2 ⊳ maximum number of child a parent can have

     maxParents ← 3 ⊳ maximum number of parent a node can have

4:  sortedParentsByPDR ← sortParentByPDR (nodes, linksPDR)

   ⊳ descending sort of all parents by PDR joining node can have

5:  forparent ∈ sortedParentsByPDRdo

6:    ifnumChild(parent) < maxChildthen

7:     parentsList.insert(parent)

8:     ifparentList.size() = maxParentsthen

9:       break

10:     end if

11:    end if

12: End if