A Sensor Network Protocol for Automatic Meter Reading in an Apartment Building
Tetsuya Kawai, Naoki Wakamiya, Masayuki Murata, Kentaro Yanagihara, Masanori Nozaki, Shigeru Fukunaga · 2008
A wireless sensor network for automatic meter reading needs to satisfy two contradicting requirements, i.e., long lifetime and prompt detection and notification of emergency. We propose a sensor network protocol for this purpose, in which sensor nodes operate on a low duty cycle while the latency of transmission is guaranteed to be less than a certain bound. In this protocol, each node is assigned a time slot in which it receives messages from other nodes. To accomplish slot assignment where nodes further from a BS are assigned earlier time slots for a packet to be transmitted to the BS in one cycle, we propose a slot assignment function with which a node can determine its own slot in a distributed way. We explore several slot assignment functions to find one which gives low and homogeneous contention over a grid network. The simulation results show that our protocol performs well close to the optimal case. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.