A spare two-tier data aggregation for grid-based wireless sensor networks
Chin‐Ling Chen, I-Hsien Lin, Cheng‐Chi Lee, Yung‐Fa Huang · 2010
This work proposes a spare two-tier data aggregation for grid-based wireless sensor networks. A sensor node is selected to be a header in each grid. The responsibility of header is to detect generated event, announce to all other headers, and respond to a mobile sink. A mobile sink obtains the occurred event information from its grid header. Each grid has two headers. All header nodes are randomly classified into two types, group-0 and group-1. To achieve the fault tolerance, two paths (path-0 for group-0 and path-1 for group-1) were constructed. This work provides two paths between roots and mobile sinks. This work can minimize energy consumption and enhance the network fault tolerance.