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Data Collection Based on Opportunistic Node Connections in Wireless Sensor Networks.

Guisong Yang1,2, Zhiwei Peng3, Xingyu He4

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Summary
This summary is machine-generated.

This study proposes a new data collection scheme for wireless sensor networks (WSNs) that improves data transmission reliability and network lifetime by optimizing opportunistic connections for mobile sinks.

Keywords:
opportunistic node connectionsrandom graphwireless sensor networksworking–sleeping cycle strategy

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Area of Science:

  • Computer Science
  • Electrical Engineering
  • Networking

Background:

  • Wireless sensor networks (WSNs) with limited power supplies often use working-sleeping cycles to conserve energy.
  • This intermittent communication mode leads to opportunistic node connections, potentially compromising data transmission reliability.

Purpose of the Study:

  • To propose an efficient data collection scheme for WSNs with a mobile sink that addresses challenges posed by opportunistic node connections.
  • To enhance the reliability of data transmission and extend the network lifetime in energy-constrained WSNs.

Main Methods:

  • A mobile sink initiates data collection by broadcasting a tag message.
  • Nodes receiving the tag message send probe messages containing source information to the mobile sink.
  • The mobile sink constructs an opportunistic connection random graph and calculates optimal paths, generating a spanning tree for efficient data forwarding.

Main Results:

  • The proposed scheme demonstrates improved packet delivery rate compared to existing methods.
  • Reduced energy consumption was observed, contributing to a longer network lifetime.
  • An adaptive routing protocol enhances data transmission reliability across different node operating statuses.

Conclusions:

  • The developed data collection scheme effectively manages opportunistic connections in WSNs with mobile sinks.
  • The scheme significantly enhances network performance metrics, including packet delivery rate, energy efficiency, and overall network lifetime.