Joint Resource Allocation for Multicasting in HetNets

Both heterogeneous networks (HetNets) and multicasting are key technologies for 5G wireless systems. In this paper, we investigate the joint resource allocation scheme for multicasting in HetNets. The objective is to maximize the system throughput achieved by multicast users subject to the transmit...

Full description

Saved in:
Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 490; no. 6; pp. 62006 - 62014
Main Authors Xie, Changxia, Ma, Dong, Gao, Yun, Sheng, Jie, Zhu, Canyan
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2019
Subjects
Algorithms
Complexity
Iterative algorithms
Iterative methods
Multicasting
Optimization
Resource allocation
Online AccessGet full text

Cover

More Information
Summary:Both heterogeneous networks (HetNets) and multicasting are key technologies for 5G wireless systems. In this paper, we investigate the joint resource allocation scheme for multicasting in HetNets. The objective is to maximize the system throughput achieved by multicast users subject to the transmit power budgets of BSs. We mathematically formulate the resource allocation scheme to an optimization problem with nonsmooth objective. We first transfer the nonsmooth objective function to an equivalent constraint, and then decompose the problem to subchannel assignment as well as power allocation subproblems to reduce the complexity. Algorithms with lower complexity are developed to find suboptimal solutions of these subproblems. Simulation results verify that our resource allocation scheme achieves higher multicast throughput than existing schemes and the iterative algorithms converge rapidly.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1757-8981
1757-899X
1757-899X
DOI:10.1088/1757-899X/490/6/062006