On the lifetime of wireless sensor networks

摘要: We derive a general formula for the lifetime-of wireless sensor networks which holds independently of underlying network model including architecture and protocol, data collection initiation, lifetime definition, channel fading characteristics, energy consumption model. This identifies two key parameters at physical layer that affect lifetime: state residual sensors. As result, it provides not only gauge performance evaluation but also guideline design protocols. Based on this formula, we propose medium access control protocol exploits both information individual Referred to as max-min approach, maximizes minimum across in each collection.