Radio Resource Management in LTE Networks : Load Balancing in Heterogeneous Cellular Networks

Abstract : High demands on mobile networks provide a fresh opportunity to migrate towardsmulti-tier deployments, denoted as heterogeneous network (HetNet), involving a mix of cell types and radio access technologies working together seamlessly. In this context, network optimisation functionalities such as load balancing have to be properly engineered so that HetNet benefit are fully exploited. This dissertation aims to develop tractable frameworks to model and analyze load balancing dynamics while incorporating the heterogeneous nature of cellular networks. In this context we investigate and analyze a class of load balancingstrategies, namely adaptive handover based load balancing strategies. These latter were firstly studied under the general heading of stochastic networks using independent and homogeneous Poisson point processes based network model. We propose a baseline model to characterize rate coverage and handover signalling in K-tier HetNet with a general maximum power based cell association and adaptive handover strategies. Tiers differ in terms of deployment density and cells characteristics (i.e. transmit power, bandwidth, and path loss exponent). One of the main outcomes is demonstrating the impact of offloading traffic from macro- to small-tier. This impact was studied in terms of rate coverage and HO signalling. Results show that enhancement in rate coverage is penalized by HO signalling overhead. Then appropriate algorithms of LB based adaptive HO are designed and their performance is evaluated by means of extensive system level simulations. These latter are conducted in 3GPP defined scenarios, including representation of mobility procedures in both connectedstate. Simulation results show that the proposed LB algorithms ensure performance enhancement in terms of network throughput, packet loss ratio, fairness and HO signalling.
Complete list of metadatas

Cited literature [81 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-01878355
Contributor : Abes Star <>
Submitted on : Friday, September 21, 2018 - 1:04:21 AM
Last modification on : Saturday, December 21, 2019 - 3:43:34 AM
Long-term archiving on: Saturday, December 22, 2018 - 1:20:41 PM

File

PhDHanaJouini.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01878355, version 1

Collections

Citation

Hana Jouini. Radio Resource Management in LTE Networks : Load Balancing in Heterogeneous Cellular Networks. Networking and Internet Architecture [cs.NI]. Conservatoire national des arts et metiers - CNAM; École nationale d'ingénieurs de Tunis (Tunisie), 2017. English. ⟨NNT : 2017CNAM1153⟩. ⟨tel-01878355⟩

Share

Metrics

Record views

186

Files downloads

1320