@article{(Open Science Index):https://publications.waset.org/pdf/6784,
	  title     = {Improving Multi-storey Building Sensor Network with an External Hub},
	  author    = {Malka N. Halgamuge and  Toong-Khuan Chan and  Priyan Mendis},
	  country	= {},
	  institution	= {},
	  abstract     = {Monitoring and automatic control of building environment
is a crucial application of Wireless Sensor Network (WSN)
in which maximizing network lifetime is a key challenge. Previous
research into the performance of a network in a building environment
has been concerned with radio propagation within a single floor. We
investigate the link quality distribution to obtain full coverage of
signal strength in a four-storey building environment, experimentally.
Our results indicate that the transitional region is of particular concern
in wireless sensor network since it accommodates high variance
unreliable links. The transitional region in a multi-storey building
is mainly due to the presence of reinforced concrete slabs at each
storey and the fac┬©ade which obstructs the radio signal and introduces
an additional absorption term to the path loss.},
	    journal   = {International Journal of Civil and Environmental Engineering},
	  volume    = {3},
	  number    = {4},
	  year      = {2009},
	  pages     = {202 - 205},
	  ee        = {https://publications.waset.org/pdf/6784},
	  url   	= {https://publications.waset.org/vol/28},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 28, 2009},