Measurement-driven performance analysis of indoor femtocellular networks

• Main Authors: LUONG, Trung-Tuan, SUBBARAJU, Vigneshwaran, MISRA, Archan, SESHAN, Srinivasan
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2012
• Subjects: femtocellular; crowd-sourcing; RF signal; Computer Sciences; Software Engineering; Theory and Algorithms
• Online Access: https://ink.library.smu.edu.sg/sis_research/3487; https://ink.library.smu.edu.sg/context/sis_research/article/4488/viewcontent/C25___Measurement_Driven_Performance_Analysis_of_Indoor_Femtocellular_Networks__WiNTECH_12_.pdf
• Institution: Singapore Management University

This paper describes initial empirical studies, performed on a 6-node 3G indoor femtocellular testbed, that investigate the impact of pedestrian mobility on network parameters, such as handoff behavior and data throughput. The studies establish that, owing to the small radii of cells, even modest changes in movement speed can have disproportionately large impact on handoff patterns and network throughput. By also revealing a strong temporal dependency effect, the studies motivate the need for algorithms to accurately predict RF signal strength distributions in dynamic indoor environments. We present such an RF prediction algorithm, based on crowd-sourced signal strength readings, and show that the algorithm can predict RF signal strengths with an average estimation error of 3 dBm.