Proposed Multi-Stage PSO Scheme for LTE Network Planning and Operation

摘要

An e-government network based on LTE is designed for a target area in Baghdad city center, in interference aware framework. The network design is taken place in two phases. In the first phase, a homogenous LTE network is planned consisting of eight macro cells. These macro cells are being selected in an optimal manner based on Binary Particle Swarm Optimization (BPSO) algorithm to get minimum overlap and acceptable covered users. In the second phase, a new Multi-Stage Particle Swarm Optimization (MS-PSO) scheme is proposed for implementing Heterogeneous Network (HetNet). MS-PSO is composed of two interactive loops; the outer loop is used for controlling the deployment of small cells by activating or deactivating pico cells. The inner loop is used for optimizing the active pico's power in such a way that the pico's power will be only increased if the Down Link (DL) data rate is increased. Controlling the HetNet operation using the proposed MS-PSO is done adaptively with the Traffic Load (TL) variation during the business day. Many analyses are being done to evaluate the proposed scheme for enhancing the network performance in terms of interfered area, served users and Energy Efficiency (EE). The proposed MS-PSO enhances the network EE by 79%, 78% and 42% for heavy, moderate and low TL respectively comparing to homogenous network, while the optimized HetNet gives an enhancement of 68%, 66%, and 56% for the same TL profiles in comparison with the non-optimized HetNet.