| 摘要 |
Disclosed is a method of configuring a tree when a new sink is added in a wireless sensor network. The method includes selecting a first sensor node via which a path can run to a new sink with the smallest delay cost, if the new sink requesting the sensed information as a sink within an existing tree is added; thereafter determining whether a path connecting the first sensor node directly(direct path) to the new sink has minimal energy consumption, after selecting the first sensor node. A second sensor node via which a path can run to the new sink with the minimal energy consumption, if the direct path does not have the minimal energy consumption. Therefore, an optimal tree having the minimal energy consumption can be configured. |
