Indian Journal of Science and Technology

Abstract

Objectives: To ensure handover in LTE system and to improve the overall network performance, besides diminish negative effects of handover like HO failures. Methods/Statistical Analysis: The impact of handovers on the system performance is more serious when there is an external interference i.e. when LTE system coexists with other mobile systems operating in the same geographical area. In this research we study the performance of a system in coexistence with other LTE network by Monte-Carlo method with the help of SEAMCAT software. We reduce the influence of external interference to ensure the network performance. Findings: The SINR received by the user and its data rate were studied when the users move on the network. Then, the handover failure rate was investigated to design and optimize the network. The simulation results indicated that to achieve a better performance in the network, it is necessary to consider a protective distance between the systems that operate in the adjacent band. with the design of appropriate filters in the transmitter and receiver to control and attenuate the power received from the adjacent band, the protective distance between the two networks can be reduced leading to improved received SINR. Thus, according to the design and optimization purposes, by developing an appropriate protective distance and controlling the received power from the interference system, the desired network performance could be achieved. Application/Improvements: For the future research it would be great to design some filters so the coexistence network could operate without any distance.

Keywords: External Interference, Handover, HO failure, Handover Process, LTE, SEAMCAT