Load Balancing in UDNs Considering the Small-Cell Cluster Layout and the APs Inter-Communications

2019 ◽  
Author(s):  
Mohamad Salhani
Keyword(s):  
Load Balancing ◽  
Small Cell ◽  
Cell Cluster

scholarly journals A Submodular Optimization Framework for Outage-Aware Cell Association in Heterogeneous Cellular Networks

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Gongchao Su ◽  
Bin Chen ◽  
Xiaohui Lin ◽  
Hui Wang ◽  
Lemin Li
Keyword(s):  
Load Balancing ◽  
Small Cell ◽  
Base Stations ◽  
Maximization Problem ◽  
Proportional Fairness ◽  
Submodular Optimization ◽  
Outage Performance ◽  
Cell Association ◽  
Outage Probabilities ◽  
Utility Maximization Problem

In cellular heterogeneous networks (HetNets), offloading users to small cell base stations (SBSs) leads to a degradation in signal to interference plus noise ratio (SINR) and results in high outage probabilities for offloaded users. In this paper, we propose a novel framework to solve the cell association problem with the intention of improving user outage performance while achieving load balancing across different tiers of BSs. We formulate a combinatorial utility maximization problem with weighted BS loads that achieves proportional fairness among users and also takes into account user outage performance. A formulation of the weighting parameters is proposed to discourage assigning users to BSs with high outage probabilities. In addition, we show that the combinatorial optimization problem can be reformulated as a monotone submodular maximization problem and it can be readily solved via a greedy algorithm with lazy evaluations. The obtained solution offers a constant performance guarantee to the cell association problem. Simulation results show that our proposed approach leads to over 30% reduction in outage probabilities for offloaded users and achieves load balancing across macrocell and small cell BSs.

scholarly journals Dynamic Mobility Load Balancing for 5G Small-Cell Networks Based on Utility Functions

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 126998-127011 ◽  
Author(s):  
Khaled M. Addali ◽  
Suhib Younis Bani Melhem ◽  
Yaser Khamayseh ◽  
Zhenjiang Zhang ◽  
Michel Kadoch
Keyword(s):  
Load Balancing ◽  
Utility Functions ◽  
Small Cell ◽  
Small Cell Networks ◽  
Dynamic Mobility ◽  
Cell Networks
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