Mobility Management in Sensor Networks

In sensor-nets the individual sensor nodes are generally assumed to be static. However, some recent applications of sensor-nets (e.g. in medical care and disaster response) make use of mobile sensor nodes, which poses some unique challenges to sensor-net systems researchers. In this paper we address the issue of mobility management from a sensor-net architecture point of view. While in current practice individual applications and protocols at different layers obtain, store and manage mobility information we propose to reduce this redundancy by storing mobility information in a logically centralized database that is visible across all layers.