Resource allocation in 5G heterogeneous networks with downlink-uplink decoupled access
Corresponding Author
Humayun Zubair Khan
MCS, National University of Sciences and Technology, Islamabad, Pakistan
Humayun Zubair Khan, MCS, National University of Sciences and Technology, Islamabad, Pakistan.
Email: [email protected]
Mudassar Ali, University of Engineering and Technology, Taxila, Pakistan.
Email: [email protected]
Search for more papers by this authorCorresponding Author
Mudassar Ali
SEECS, National University of Sciences and Technology, Islamabad, Pakistan
University of Engineering and Technology, Taxila, Pakistan
Humayun Zubair Khan, MCS, National University of Sciences and Technology, Islamabad, Pakistan.
Email: [email protected]
Mudassar Ali, University of Engineering and Technology, Taxila, Pakistan.
Email: [email protected]
Search for more papers by this authorMuhammad Naeem
COMSATS University, Islamabad Wah Campus, Wah Cantt, Pakistan
WINCORE Laboratory, Electrical and Computer Engineering Department, Ryerson University, Toronto, Canada
Search for more papers by this authorImran Rashid
MCS, National University of Sciences and Technology, Islamabad, Pakistan
Search for more papers by this authorMuhammad Imran
MCS, National University of Sciences and Technology, Islamabad, Pakistan
Search for more papers by this authorCorresponding Author
Humayun Zubair Khan
MCS, National University of Sciences and Technology, Islamabad, Pakistan
Humayun Zubair Khan, MCS, National University of Sciences and Technology, Islamabad, Pakistan.
Email: [email protected]
Mudassar Ali, University of Engineering and Technology, Taxila, Pakistan.
Email: [email protected]
Search for more papers by this authorCorresponding Author
Mudassar Ali
SEECS, National University of Sciences and Technology, Islamabad, Pakistan
University of Engineering and Technology, Taxila, Pakistan
Humayun Zubair Khan, MCS, National University of Sciences and Technology, Islamabad, Pakistan.
Email: [email protected]
Mudassar Ali, University of Engineering and Technology, Taxila, Pakistan.
Email: [email protected]
Search for more papers by this authorMuhammad Naeem
COMSATS University, Islamabad Wah Campus, Wah Cantt, Pakistan
WINCORE Laboratory, Electrical and Computer Engineering Department, Ryerson University, Toronto, Canada
Search for more papers by this authorImran Rashid
MCS, National University of Sciences and Technology, Islamabad, Pakistan
Search for more papers by this authorMuhammad Imran
MCS, National University of Sciences and Technology, Islamabad, Pakistan
Search for more papers by this authorAbstract
Fifth-generation (5G) heterogeneous network (HetNet) with downlink (DL) and uplink (UL) decoupled cell association strategy is a promising solution to challenges faced in fourth-generation (4G) HetNet, ie, mitigating interference, addressing traffic imbalances, and enhanced sum-rate. This work carries out performance analysis of 4G HetNet with DL and uplink coupled (DUCo) access scheme vs 5G HetNet with DL and UL decoupled (DUDe) access scheme employing outer approximation and heuristic algorithms. First, a mathematical model, mixed integer nonlinear programming (MINLP) problem, is formulated for DUCo access and DUDe access schemes considering cell association, addressing user traffic imbalances, mitigating interference, and sum-rate maximization in HetNet. Then, the formulated problem is solved, employing outer approximation algorithm (OAA) to find near optimal solution. Similarly, heuristic algorithms are developed for DUCo access and DUDe access schemes considering cell association, addressing user traffic imbalances, mitigating interference, and sum-rate maximization in HetNet. Detailed performance analysis of DUCo access and DUDe access schemes is done by comparing results employing OAA and heuristic algorithms. Simulation results have shown that proposed DUDe access scheme outperforms DUCo access scheme in HetNet in term of cell association, addressing user traffic imbalances, mitigating interference, and sum-rate maximization.
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