Optimization Of Coverage And Handover For Heterogeneous Networks
Volume 3 - Issue 3, March 2019 Edition
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Author(s)
Rima Almosbahi, Mohamed Elalem
Keywords
Heterogeneous network , LTE worldwide, link budget, coverage, vertical handover, handover necessity estimation
Abstract
The wide increase of wireless systems and the use of software radio technologies enable the employment of a heterogeneous network. In this concept services are delivered via the network that is most efficient for that service. The solution is based on a common core network that interconnects access points of various wireless access points. A mobile host can apply multiple different access networks simultaneously to increase capacity or efficiency. The signal coverage starts within the cell, by predicting the affecting parameters on the signal power level in the uplink and downlink at the practical cases. In this paper, the concentration is completely on preprocess of network planning i.e. link budgeting of LTE and WiMAX cellular systems. This investigation can also lead the radio planner to a thorough understanding of radio wave propagation for designing mobile communication system. The mathematical model calculation mainly includes path loss, link budgets etc. Radio propagation is site specific and it varies substantially depending on geography, frequency at which system will operate mobile terminal speed, interface sources and other dynamic factors. The coverage planning used to obtain the LTE cell range is based on the required receiver sensitivity, and link budget calculations to estimate maximum allowable path loss, then the proposed approach to enhance the coverage is implemented by measuring the received signal along path from the cell center and its edge, and installing a WiMax base station on the edge. The importance of using heterogeneous technology is by estimating the change of received power in the cell edge.
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