TDMA-based MAC protocol for wireless sensor networks: Design and evaluation on the WLAN physical layer

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master_Phan_Giang_2024.pdf (1.59 MB)

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Sähkötekniikan korkeakoulu | Master's thesis
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Date

2024-08-19

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Major/Subject

Communications Engineering

Mcode

ELEC3029

Degree programme

CCIS - Master’s Programme in Computer, Communication and Information Sciences (TS2013)

Language

en

Pages

55

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Abstract

The widespread usage of Wireless sensor networks (WSN) in different applications such as environment monitoring, smart vehicles and manufacturing is connected to their low cost and high utility. To manage communication among a large number of sensor nodes in WSN, various Medium Access Control (MAC) protocols have been developed, each designed to suit specific applications. Common requirements that need to be balanced in MAC protocol design include power consumption, latency and flexibility. The aim of this research project was to develop a schedule-based MAC protocol suitable for large-scale WSN deployments and to test its performance on top of Wireless Local Area Network Physical (WLAN PHY) layer. The protocol was devel-oped in several stages. Initially, the software was developed for both the coordinator and sensor nodes. The coordinator sends a synchronization signal to the nodes, which use it to synchronize and send their data back to the server in their designat-ed time slots. In the next stage, the protocol was tested by running the coordinator and node software for an extended period of time. The sensor data was gathered at the server and later analyzed to assess the protocol synchronization performance. Lastly, a Universal Software Radio Peripheral (USRP) device was used to sample the data over the air between the coordinator and nodes to further verify the protocol’s synchronization ability. The developed MAC protocol can manage channel access for a wireless sensor net-work with multiple nodes. Protocol testing revealed that the protocol could be further optimized to improve its reliability and synchronization.

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Supervisor

Ruttik, Kalle

Thesis advisor

Ruttik, Kalle

Keywords

MAC, protocol, WSN, TDMA, WLAN, USRP

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https://urn.fi/URN:NBN:fi:aalto-202408265846

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[dipl] Sähkötekniikan korkeakoulu / ELEC