Paper Info
Title
Delay-Aware User Association and Power Control for 5G Heterogeneous Network
Abstract
Heterogeneous network (HetNet) serves as one of the most promising technologies for the upcoming fifth-generation (5G) wireless networks. In this paper, we consider the joint design of the delay-aware user association and power control problem in an uplink HetNet. The problem of interest is to minimize the overall power consumption subject to the strict delay constraints, which is modeled as a non-convex and mixed-integer nonlinear programming (MINLP) problem. To solve this intractable problem, we first adopt the ℓ1-norm approximation approach to convert the integer constraints into solvable forms. Then, an iterative algorithm is proposed to solve the reformulated problem based on the successive convex approximation (SCA). The proposed centralized SCA-based algorithm employs the arithmetic-geometric mean (AGM) approximation and it can be further improved by the reweighted ℓ1-minimization technique. A distributed implementation using alternating direction method of multipliers (ADMM) is presented as well. The simulation results are provided to demonstrate the effectiveness of the proposed algorithms.
Year
DOI
Venue
2019
10.1007/s11036-018-1152-6
Mobile Networks and Applications
Keywords
Field
DocType
User association, Power control, Successive convex approximation (SCA), Alternating direction method of multipliers (ADMM)
Integer,Wireless network,Mathematical optimization,Iterative method,Computer science,Power control,Nonlinear programming,Heterogeneous network,Power consumption,Distributed computing,Telecommunications link
Journal
Volume
Issue
ISSN
24
2
1572-8153
Citations 
PageRank 
References 
0
0.34
24
Authors
5
Name
Order
Citations
PageRank
Yan Lei183.45
Zhu Gang2464.41
Chao Shen312210.15
Yanqing Xu4765.76
Xiaozhou Zhang521.05