Backhaul-Aware User Association and Resource Allocation for Energy-Constrained HetNets

Growing attention has been paid to renewable- or hybrid-energy-powered heterogeneous networks (HetNets). In this paper, focusing on backhaul-aware joint user association and resource allocation for this type of HetNets, the authors formulate an online optimization problem to maximize the network utility reflecting proportional fairness. Since user association and resource allocation are tightly coupled not only on resource consumption of the base stations (BSs) but in the constraints of their available energy and backhaul as well, the closed-form solution is quite difficult to obtain. Thus, the authors solve the problem distributively by employing certain decomposition methods. Specifically, at first, by adopting the primal decomposition method, the authors decompose the original problem into a lower level resource-allocation problem for each BS and a higher level user-association problem. For the optimal resource allocation, the authors prove that a BS either assigns equal normalized resources or provides an equal long-term service rate to its served users. Then, the user-association problem is solved by the Lagrange dual decomposition method, and a completely distributed algorithm is developed. Moreover, applying results of the subgradient method, the authors demonstrate the convergence of the proposed distributed algorithm. Furthermore, to efficiently and reliably apply the proposed algorithm to the future wireless networks with an extremely dense BS deployment, the authors design a virtual user association and resource allocation scheme based on the software-defined networking architecture. Finally, numerical results validate the convergence of the proposed algorithm and the significant improvement on network utility, load balancing, and user fairness.

• Record URL:
  https://doi.org/10.1109/TVT.2016.2533559
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00189545
• Supplemental Notes:
  • Copyright © 2017, IEEE.
• Authors:
  • Han, Qiaoni
  • Yang, Bo
  • Miao, Guowang
  • Chen, Cailian
  • Wang, Xiaocheng
  • Guan, Xinping
• Publication Date: 2017-1

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 580-593
• Serial:
  • IEEE Transactions on Vehicular Technology
  • Volume: 66
  • Issue Number: 1
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
  • ISSN: 0018-9545
  • Serial URL: http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=25

Subject/Index Terms

• TRT Terms: Algorithms; Cellular radio; Communication systems; Energy consumption; Programming (Mathematics); Resource allocation
• Subject Areas: Data and Information Technology; Highways;

Filing Info

• Accession Number: 01627687
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 27 2017 5:12PM