| 摘要 |
Nodes in a network are clustered by first determining, in each node, a cluster head capability (CHC). The CHC is broadcasting, directly or indirectly, until all nodes have received the CHCs. Each node nominates, one or more candidate cluster heads based on the CHCs, and then, in each node, at least one cluster head is selected from the candidate cluster head nodes based on maximal CHCs. |
| 主权项 |
1. A method clustering nodes in a network, comprising the steps of:
determining, in each node, a cluster head capability (CHC); broadcasting, directly or indirectly by each node, the CHC until all nodes have received the CHCs; maintaining, in each node, a set (NB) that includes neighboring nodes j of the node i, wherein each entry in the set NB(i) has a format (ID, D, CHC), where ID represents an identifier of the neighboring node j, D represents a distance between the node i and the neighboring node j, and the CHC represents the cluster head capability of node j and wherein the CHC is CHCi=C(i)/Cmax*Ei*ERi, where C(i) is a capability classification of node i, Cmax is a maximal classification index, E(i) is a percentage of remaining energy of node i, and ER(i) is an expected reliability of node i when the node i is the cluster head; nominating, in each node, one or more candidate cluster heads based on the CHCs; and selecting, in each node, at least one cluster head from the one or more candidate cluster head nodes, wherein the at least one cluster head has a maximal CHCs for the one or more candidate cluster head nodes. |
