Efficient Data Dissemination in Mobile Wireless Sensor Networks
Abstract
Motivated by emerging applications, we consider dynamic sensor networks where the sensors themselves (not just the sinks) are mobile. We propose a novel network parameter, the mobility level, which, although simple and local, captures these high dynamics taking into account the spatial and speed characteristics of motion. We propose adaptive data dissemination protocols that use the mobility level estimation to optimize performance, by exploiting high mobility (redundant message ferrying) as a cost-effective replacement of flooding and by favoring nodes of high mobility. These dissemination schemes are enhanced by a distance-sensitive, probabilistic message flooding inhibition mechanism that further reduces communication cost.