Analytical Model of the LTE Radio Scheduler for nonGBR Bearer

Abstract

Long Term Evolution (LTE) is a mobile network that operates completely in packet domain. Due to the variation of radio condition in LTE, the obtainable bit rate for active users will vary. The two factors for radio variation are fading and path-loss. By analyzing the previous researches concerning with packet scheduling of LTE network, in this paper, an analytical model of the LTE radio scheduler is proposed. This model is based on the stochastic process to observe the system behavior mathematically and takes the details of the schedluler’s behavior taking into account given in a state of the system, i.e. the number of the active users and their distance from the base station. Instead simulation result, the numerical result is shown. This model mainly considers the path loss variation at non-Guaranteed (nonGBR) bit rate such as FTP or HTTP.