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Table 1 Variable symbols and their meanings

From: Energy-efficient capture of stochastic events based on on-line scheduling scheme

Symbol Meaning
 r Sensor perception radius
k1 Energy rate of sensor consumed in active state
k2 Energy rate of sensor consumed in inactive state
 c Energy consumed by the sensor to change between active/inactive states
 ν Average arrival rate of stochastic events at PoI
 X The time of an event arrives PoI and lasts for a stochastic event, that is, the duration of stochastic event
 Y The interval between the of disappearance of previous event and the arrival of latter event at PoI, that is, the interval between stochastic event
Pc Capture probability of stochastic events from arrival PoI until disappearance
QE Energy efficiency of sensor in capturing stochastic events