LPTA: location predictive and time adaptive data gathering scheme with mobile sink for wireless sensor networks

Area of Science:

• Computer Science
• Wireless Sensor Networks
• Networking

Background:

• Wireless Sensor Networks (WSNs) face challenges in prolonging network lifetime and minimizing data transmission delay.
• Efficient data gathering is crucial for the functionality of WSNs.

Purpose of the Study:

• To propose a novel data gathering scheme that exploits sink mobility to enhance WSN lifetime.
• To maintain low data transmission delay while extending the operational period of sensor networks.

Main Methods:

• A location predictive and time adaptive data gathering scheme is introduced.
• Sink location is predicted using loose time synchronization and derived time-location formulas.
• Nodes calculate the mobile sink's location and route data via multihop relay.
• An adaptive dwelling time adjustment method balances energy consumption.

Main Results:

• The proposed scheme effectively prolongs the lifetime of sensor networks.
• Data transmission delay is maintained at a relatively low level.
• Energy consumption is balanced among network nodes, improving overall network efficiency.

Conclusions:

• Sink mobility, combined with predictive location and adaptive time strategies, offers a viable solution for extending WSN lifetime.
• The developed scheme balances network longevity with efficient, low-latency data delivery.
• Adaptive dwelling time is key to managing energy resources across the network.