Data Gathering and Data Aggregation in Wireless Sensor Networks
Pp. 108-118 (11)
Hongju Cheng, Guolong Chen and Wenzhong Guo
The wireless sensor network is emerging as a new hotspot by exploiting the cooperation of
hundreds to thousands of cheap nodes. Data gathering and data aggregation are key issues in the network.
This article has taken a deep view into the current solutions for the data gathering and data aggregation.
First, it has introduced the basic concepts, i.e., the data gathering system, data structure, data aggregation
function and routing protocols. Secondly, it has explored the current data gathering protocols, and
accordingly introduced three important tree-based / flat routing protocols, namely, SPIN, Directed
Diffusion and ELECTION-based protocol, one cluster-based hierarchical protocol named as LEACH, as
well as one location-based protocol named GAF. Finally, it has concerned with the real-time requirement
in the applications, and introduced a novel solution by converting the real-time requirement into two
constraints: node degree bounded and tree height bounded, and provided solutions for it.
College of Mathematics and Computer Science, Fuzhou University, P. R. China