Experimental Study on the Impact of Weather Conditions on Wide Code Division Multiple Access Signals in Nigeria

N. C. Eli-Chukwu, G. N. Onoh

Abstract


In cellular network activities, before a site is integrated it is expected that each cell of the site meets the Nigerian Communication Commission (NCC) standard of ≥98% for both service accessibility and call completion rate which in turn depicts a ≤2% in both blocked call rate (BCR) and dropped call rate (DCR). It is suggested that weather conditions have a very strong negative effect on the performance of wideband code division multiple access (WCDMA) network as it could lead to signal attenuation or change the polarization. In this paper, we study the impact of weather conditions on WCDMA network in Nigeria. To achieve this, network samples (log-files) were collected weekly during a driving test in Enugu State Nigeria for a period of five years for both rainy and dry seasons, in which blocked and dropped calls were extracted. Results show that during adverse weather conditions, BCR and DCR rise greater than 8% and 4% respectively. Although with a slight relationship between the weather conditions, the weather condition during the dry season has a better-blocked call rate of 8.76% in comparison with the rainy season with 12.89%. Calls tend to drop more during the dry season. From the outcome of the experiment, a model was developed for predicting an unknown network call statistics variables.


Keywords


blocked call; cellular; dropped call; dry season; rainy season; weather; WCDMA

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References


T. S. Dalip, V. Kumar, “Effect of Environmental Parameters on GSM and GPS”, Indian Journal for Science and Technology. Vol. 7, No. 8, pp. 1183-1188, 2014

S. H. Fang, Y. S Yang, “The impact of weather condition on Radio-Based Distance Estimation: A case study in GSM Network with Mobile Measurement”, IEEE Transactions on Vehicular Technology, Vol. 65, No. 8, pp. 6444-6453, 2015

M. S. Yadnav, I. W. Sudiartha, “Simulation of broadcast level signal mobile station 3G Network rain condition”, Asia Pacific Conference on Multimedia and Broadcasting, Bali, Indonesia, November 17-19, 2016

J. Luomal, I. Hakala, “Effects of Temperature and Humidity on Radio Signal Strength in Outdoor Wireless Sensor Networks”, Computer Science and Information Systems, Vol. 5, pp. 1247-1255, 2015

M. Voznak, J. Rozhon, “Influence of Atmospheric Parameters on Speech Quality in GSM/UMTS”, International Journal of Mathematical Models and Methods in Applied Sciences, Vol. 6, pp. 575-582, 2012

J. Rozhon, P. Blaha, M. Voznak, J, Skapa, “The Weather Impact on Speech Quality in GSM Network”, in: Computer Networks, Communications in Computer and Information Science, Vol. 291 Springer, 2014

M. C. Kestwal, S. Joshi, L. S. Garia, “Prediction of Rain Attenuation and Impact of Rain in Wave Propagation at Microwave Frequency for Tropical Region”, International Journal of Microwave Science and Technology, Vol. 2014, Article ID 958498, 2014

S. Sabu, S. Renjmol, D. Abhiram, B Premlet, “Effect of rainfall on cellular signal strength: A study on the variation of RSSI at user end of smartphone during rainfall 2017 IEEE Region 10 Symposium, Cochin, India, July 14-16, 2014

B. Fong, P. B. Rapaiic, G. Y. Hong, “Effects of rain attenuation on wireless transmission of frame relay traffic”, The 8th International Conference on Communication Systems, Singapore, November 28, 2002

J. Skapa, M. Dvorsky, L. Michalek, R. Sebesta, P. Blaha, “K-mean clustering and correlation analysis in recognition of weather impact on radio signal”, 35th International Conference on Telecommunications and Signal Processing, Prague, Czech Republic, July 3-4, 2012

L. Ali, I. Alam, A. A. S. Syed, M. Yaqoob, “Various Meterological Parameters Effect on GSM Radio Signal Propagation for a Moderate Area”, 2017 International Conference on Frontiers of Information Technology, Islamabad, Pakistan, December 18-20, 2017

P. Blaha, J. Rozhon, M. Voznak, J. Skapa, “Correlation between Speech Quality and Weather”, in: Soft Computing Models in Industrial and Environmental Applications. Advances in Intelligent Systems and Computing, Vol. 188, Springer, 2014

L. A. R. da Silva Mello, E. Costa, R. S. L. de Souza, “Rain attenuation measurements at 15 and 18 GHz”, Electronics Letters, Vol. 38, No. 4, pp. 197-198, 2015

C. Li, X. Luo, C. Zhang, X. Wang, “Sunny, Rainy, and Cloudy with a Chance of Mobile Promotion Effectiveness”, Marketing Science, Vol. 36, No. 5, pp. 762-779, 2017

D. D. Dajah, N. Parfait, “A Consideration of Propagation Loss Models for GSM during Harmattan in N’djamena (Chad)”, International Journal of Computing and ICT Research, Vol. 4, No. 1, pp. 43-48, 2010

N. H. Sabri, R. Umar, M. M. Shafie, S. N. A. S. Zafar, R. Mat, A. Sabri, Z. A. Ibrahim, “Correlation Analysis of Tropical Rainforest Climate Effect on Radio Signal Strength at KUSZA Observatory, Terengganu”, Advanced Science Letters, Vol. 23, No. 2, pp. 1268-1271, 2015

A. F. Ismail, M. R. Islam, J. Din, A. R. Tharek, N. L. I. Jamaludin, “Investigation of rain fading on a 26GHz link in tropical climate”, 6th International Conference on Telecommunication Systems, Services, and Applications, Bali, Indonesia, October 20-12, 2011

N. C. Eli-Chukwu, G. N. Onoh, “Improving Service Accessibility (CSSR) In GSM Network using an Intelligent Agent-Based Approach”, International Journal of Computer Engineering in Research Trends, Vol. 4, No. 11, pp. 478-486, 2017

P. K. Sahu, S. R. Pal, A. K. Das, Estimation and Inferential Statistics, Springer, 2015

M. R. Spiegel, L. J. Stephens, Theory and Problems of Statistics, McGraw-Hill, 1999




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