tailieunhanh - A general model of Fractional Frequency Reuse: Modelling and performance analysis

In this paper, we consider a general case of FFR in which the users are classified into groups and each group is assigned a serving power level. The mathematical model of the general FFR is presented and analysed through a stochastic geometry approach. The derived analytical results in terms of average coverage probability can covered all the related well-known results in the literature. | VNU Journal of Science Comp. Science amp Com. Eng Vol. 36 No. 1 2020 38-45 Original Article A General Model of Fractional Frequency Reuse Modelling and Performance Analysis Lam Sinh Cong1 Nguyen Quoc Tuan1 Kumbesan Sandrasegaran2 1 Faculty of Electronics and Telecommunications VNU University of Engineering and Technology Vietnam National University Hanoi 144 Xuan Thuy Cau Giay Hanoi Vietnam 2 Faculty of Engineering and Information Technology University of Technology Sydney Australia Received 01 November 2018 Revised 27 December 2018 Accepted 23 April 2019 Abstract Fractional Frequency Reuse FFR is a promising to improve the spectrum e ciency in the LongTerm Evolution LTE cellular network. In the literature various research works have been conducted to evaluate the performance of FFR. However the presented analytical approach only dealt with the special cases in which the users are divided into 2 groups and only two power levels are utilised. In this paper we consider a general case of FFR in which the users are classified into groups and each group is assigned a serving power level. The mathematical model of the general FFR is presented and analysed through a stochastic geometry approach. The derived analytical results in terms of average coverage probability can covered all the related well-known results in the literature. Keywords Fractional Frequency Reuse LongTerm Evolution coverage probability stochastic geometry. 1. Introduction which represents 70 of the global population. This will make mobile data traffic experience In recent years there has been a rapid rise eight-fold over the next five years. Therefore in the number of mobile users and mobile data the requirement of spectral efficiency traffic. According to Cisco report 1 the improvement is a big challenge for the network number of mobile users has a 5-fold growth designers and operators. over the past 15 years. In 2015 more than a half One of the most popular to improve spectral of a million devices .