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@@ -20,7 +20,7 @@ sorting=ynt
 \addbibresource{mybibliography.bib}
 
 
-\title{Literature Review }
+\title{Literature Review}
 \author{Woon Jun Wei, 2200624}
 \date{}
 
@@ -34,7 +34,7 @@ Monitoring environmental conditions like air quality or wildfire risk is crucial
 
 Star-based Wireless Sensor Networks (WSNs) have emerged as a popular approach for environmental monitoring, exemplified by Lazarescu et al.'s wildfire detection system \cite{lazarescu_design_2013}. These networks resemble constellations, with individual sensor nodes dispersed like stars and transmitting data to a central gateway node, analogous to a central star. This architecture prioritizes reliable communication, particularly crucial in scenarios like wildfire detection, by utilizing dedicated radio channels within the unlicensed Industrial, Scientific, and Medical (ISM) band \cite{shah_iot-enabled_2020}. The central gateway node acts as a hub, collecting and buffering data from all sensors before forwarding it to a remote server via the internet.
 
-Building on this concept, Shah et al. designed a similar system for environmental monitoring, but with sensors directly connected to a computer through a dedicated transceiver pair \cite{shah_iot-enabled_2020}. This simplifies data visualization and sharing, but lacks the centralized structure of the previous approach.
+Building upon this concept, Shah et al. crafted a similar system, but with sensors directly tethered to a computer through a dedicated transceiver pair \cite{shah_iot-enabled_2020}. This setup streamlines data visualization and sharing, but lacks the centralized structure of its predecessor. Interestingly, star topologies have even ventured into the realm of long-range communication, utilizing technologies like 2G/GSM to shine their light over wider areas \cite{CVZZ16}.
 
 While Star-based WSNs shine in terms of simplicity and ease of deployment, they face limitations. Scaling them up for wider coverage can be challenging \cite{Boukerche2018Connectivity}. Additionally, research by Shrestha et al. suggests that Mesh networks, with their interconnected nodes and redundant data paths, may offer superior reliability, especially when individual nodes fail \cite{shrestha_performance_2007}.
 
diff --git a/mybibliography.bib b/mybibliography.bib
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--- a/mybibliography.bib
+++ b/mybibliography.bib
@@ -107,3 +107,6 @@ volume={80},
 pages={54-69},
 doi={10.1016/j.adhoc.2018.07.003}
 }
+
+@ARTICLE{CVZZ16, author={M. Centenaro and L. Vangelista and A. Zanella and M. Zorzi}, journal={IEEE Wireless Communications}, title={{Long-Range Communications in Unlicensed Bands: the Rising Stars in the IoT and Smart City Scenarios}}, year={2016}, volume={23}, keywords={Internet of Things;Smart Cities;Low-Power Wide Area Network (LPWAN);LoRa; SIGFOX;Ingenu;Cellular IoT}, month={October}
+}