Data Gathering Algorithms in Sensor Networks Using Energy Metrics

Sensor webs consisting of nodes with limited battery power and wireless communications are deployed to collect useful information from the field. Gathering sensed information in an energy efficient manner is critical to operating the sensor network for a long period of time. In [12], a data collection problem is defined where, in a round of communication, each sensor node has a packet to be sent to the distant base station. There is some fixed amount of energy cost in the electronics when transmitting or receiving a packet and a variable cost when transmitting a packet which depends on the distance of transmission. If each node transmits its sensed data directly to the base station, then it will deplete its power quickly. The LEACH protocol presented in [12] is an elegant solution where clusters are formed to fuse data before transmitting to the base station. By randomizing the cluster-heads chosen to transmit to the base station, LEACH achieves a factor of 8 improvement compared to di...

• Type: Journal
• Year: 2002
• Where: TPDS
• Authors: Stephanie Lindsey, Cauligi S. Raghavendra, Krishna M. Sivalingam
• Keywords: Base Station, Energy Efficient Manner, Sensor, TPDS 2002