ELEC-E7120 Wireless System Group 5 Atte Virtanen Bijay Basnet Mrton Fekete Xing Huang Aalto School of Electrical Engineering Table of Contents Location Hypothesis Tools for measurement Measurement results Possible solutions Location 2/19/2010 Word template user guide 4 Hypothesis The physical location (high path loss) Edge of many surrounding cells Frequent cell reselections Low signal strength Tools of measurement Running on Android OS, DNA 2G, DNA 3G and Elisa/Saunalahti 4G Netradar -- UP/Down Speeds, latency Network Signal info -- Signal strength and Cell ID Cellmapper -- Neighboring cells info-- Location of cellswww.cellid.org Measurement results 2/19/2010 Word template user guide 7 Location3G4G North point-95dBm dBm75010 West point-91dBm dBm75010 Center point-101dBm dBm East point-105dBm dBm Measurement results 2/19/2010 Word template user guide 8 Measurement results 2/19/2010 Word template user guide 9 Solutions Introduction of new base station Increase the altitude of the transmitter antenna Apply signal boosters 2/19/2010 Word template user guide 11