On Stability and Sampling Schemes for Wireless Sensor Networks
The authors consider a wireless sensor network in which the sensor nodes are sources of delay insensitive traffic that needs to be transferred in a multi-hop fashion to a common processing center. They consider two data sampling schemes: the sensor nodes have a sampling process independent of the transmission scheme, and the sensor nodes sample new data only when it has a opportunity of transmitting the data. The first system is like the packet radio network for which exact analysis is not available. They also show that the stability condition proposed in the PRN literature is not accurate. A correct stability condition for such a system is provided.