On The Multi-Hop Extension of Energy-Efficient WSN Time Synchronization Based on Time-Translating Gateways

TL;DR

This paper presents a simulation study demonstrating the feasibility of extending energy-efficient wireless sensor network time synchronization to multi-hop scenarios using time-translating gateways, analyzing the impact on clock and measurement accuracy.

Contribution

It introduces a multi-hop extension of a time synchronization scheme for WSNs using gateways that translate timestamps, expanding the scheme's applicability beyond single-hop networks.

Findings

Multi-hop synchronization is feasible with gateways translating timestamps.

Addition of gateways affects clock frequency and measurement accuracy.

Simulation results support the scheme's potential for practical deployment.

Abstract

We report preliminary results of a simulation study on the multi-hop extension of the recently-proposed energy-efficient wireless sensor network time synchronization scheme based on time-translating gateways. Unlike the single-hop case, in multi-hop time synchronization a sensor node sends measurement data to a head node through gateways which translate the timestamp values of the received measurement data. Through simulations for two-hop time synchronization, we analyze the impact of the addition of a gateway and its translation of timestamp values on the clock frequency and measurement time estimation and thereby demonstrate the feasibility of the multi-hop extension of the energy-efficient WSN time synchronization based on time-translating gateways.