Posicionamento de Pontos de Acesso Sem-fio para Segurança de Visitantes em Parques Florestais
Abstract
The deployment of wireless networks in tracks of forest parks, such as those of the Atlantic Forest, has challenges due to high humidity and dense vegetation. Nevertheless, this type of communication is important for the safety of the park visitors, assisting in natural disaster monitoring and people tracking. This paper formulates an integer linear programming problem for the placement of access points in forest tracks. In order to obtain the parameters of the problem, range measurements of wireless technologies are carried out, and information from the Petrópolis-Teresópolis crossing is used. Results show that it is possible to maintain 79% of coverage even when reducing in 47% the number of access points required.
References
Bor, M., Vidler, J., and Roedig, U. (2016). Lora for the internet of things. In Proceedings of the 2016 International Conference on Embedded Wireless Systems and Networks, EWSN ’16, pages 361–366, USA. Junction Publishing.
Carbonés Fargas, B. (2017). IoT and tracking capabilities in LPWANs. Master’s thesis, Universitat Politécnica de Catalunya.
Figueiredo, C. M. S., Nakamura, E. F., Ribas, A. D., de Souza, T. R. B., and Barreto, R. S. (2009). Assessing the communication performance of wireless sensor networks in rainforests. In 2009 2nd IFIP Wireless Days (WD), pages 1–6.
Huang, C.-F. and Tseng, Y.-C. (2005). The coverage problem in a wireless sensor network. Mob. Netw. Appl., 10(4):519–528.
Liao, C.-H., Zhu, G., Kuwabara, D., Suzuki, M., and Morikawa, H. (2017). Multi-hop LoRa networks enabled by concurrent transmission. IEEE Access, 5:21430–21446.
Lima, M. M., Oliveira, H. A. B. F. d., Nakamura, E. F., Barreto, R., and Guidoni, D. L. (2016). Agregação de dados com desvio de buracos para redes de sensores sem o com sinks de alto alcance. In Anais do XXXIV Simpósio Brasileiro de Redes de Computadores e Sistemas Distribudos – SBRC 2016, pages 614–629. SBRC.
Loureiro, A. A. F., Nogueira, J. M. S., Ruiz, L. B., Mini, R. A. d. F., Nakamura, E. F., and Figueiredo, C. M. S. (2003). Redes de sensores sem o. In Minicursos de XXI Simpósio Brasileiro de Redes de Computadores (SBRC’2003), pages 179–226.
Marais, J. M., Malekian, R., and Abu-Mahfouz, A. M. (2017). LoRa and LoRaWAN testbeds: A review. In AFRICON, 2017 IEEE, pages 1496–1501. IEEE.
Semtech Corporation (2012). Zigbee Specication. http://www.zigbee.org/download/standards-zigbee-specification.
Semtech Corporation (2015). LoraTM modulation basics an1200.22. https://www.semtech.com/uploads/documents/an1200.22.pdf.
Stutzman, W. L. and Thiele, G. A. (2012). Antenna theory and design. John Wiley & Sons, 3rd edition.
Van de Velde, B. (2017). LoRa forwarder. https://github.com/texus/LoRaWAN-forwarder.
Van Le, D., Oh, H., and Yoon, S. (2016). Environment learning-based coverage maximization with connectivity constraints in mobile sensor networks. IEEE Sensors Journal, 16(10):3958–3971.
Zhu, C., Zheng, C., Shu, L., and Han, G. (2012). A survey on coverage and connectivity issues in wireless sensor networks. Journal of Network and Computer Applications, 35(2):619–632.
