maksimovic23time
- Sara Faour
Title of the paper: A Time Synchronized Multi-Hop Mesh Network with Crystal-Free Nodes
Available at: A Time Synchronized Multi-Hop Mesh Network with Crystal-Free Nodes | Request PDF
Introduction
very good and brief explanation for the motivation behind “crystal-free” oscillators in smart dust
power consumption
physical volume
contributions
a rapid low-energy calibration scheme that is used to calibrate each individual node so that it uses standards-specified channels in the 2.4 GHz ISM band
a demonstration of a multi-hop mesh network that shows the impact of imprecise oscillators on guard time requirements and time synchronization
the use of periodic packets to maintain connectivity in the presence of rapid environmental variation.
Hardware Specifics
Precise details about the 802.15.4e transceiver and the three low frequency timers on SCuM
The Proposed Protocol
The authors propose μTSCH, a minimalistic implementation of Time Synchronized Channel Hopping (TSCH). TSCH is the core technique used in standards such as 6TiSCH and WirelessHART that are widely deployed in industrial IoT applications. The proposed protocol implements both Medium Access Control (MAC) and networking layers.