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Dual connectivity in backhaul-limited massive-MIMO HetNets: User association and power allocation

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conference contribution
posted on 15.09.2017, 13:26 by Ye Liu, Mahsa DerakhshaniMahsa Derakhshani, Sangarapillai LambotharanSangarapillai Lambotharan
With dual connectivity, a mobile user can be served by a macro base station (MBS) and a pico base station (PBS) simultaneously. In this paper, we address the problem of optimizing user-PBS association and power allocation in the uplink such that the network can serve the users’ demand at the minimum cost, where the PBSs are subject to backhaul capacity limitations and minimum rate requirements of users. We show that this non-convex problem can be formulated as a signomial geometric programming (SGP) whose solution can be found by solving a series of geometric programming (GP) problems. Simulation results are provided to demonstrate traffic offloading trend to PBSs for different cost and backhaul capacity settings, confirming the effectiveness of the proposed iterative algorithm. They also show that the output of the proposed algorithm closely matches the global optimal solution with affordable complexity.

Funding

This work has been supported by the Engineering and Physical Science Research Council of the UK, EPSRC, under the grant EP/M015475.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

IEEE Global Communications Conference (IEEE GLOBECOM)

Citation

LIU, Y., DERAKHSHANI, M. and LAMBOTHARAN, S., 2017. Dual connectivity in backhaul-limited massive-MIMO HetNets: User association and power allocation. Presented at the IEEE Global Communications Conference (IEEE GLOBECOM), Singapore, 4-8th December.

Publisher

IEEE

Version

AM (Accepted Manuscript)

Acceptance date

25/07/2017

Publication date

2017

Notes

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ISBN

9781509050192

Language

en

Location

Singapore

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