Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity
Aiming at the scenarios which consider the constraint of backhaul capacity restriction and interference threshold in ultra-dense networks (UDN),an integer linear programming (ILP) and Lagrangian dual decomposition (LDD) based joint optimization algorithm of energy efficiency and spectrum efficiency...
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Format: | Article |
Language: | zho |
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Editorial Department of Journal on Communications
2019-12-01
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Series: | Tongxin xuebao |
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Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2019205/ |
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author | Xuanli WU Xu CHEN |
author_facet | Xuanli WU Xu CHEN |
author_sort | Xuanli WU |
collection | DOAJ |
description | Aiming at the scenarios which consider the constraint of backhaul capacity restriction and interference threshold in ultra-dense networks (UDN),an integer linear programming (ILP) and Lagrangian dual decomposition (LDD) based joint optimization algorithm of energy efficiency and spectrum efficiency was proposed.In the proposed algorithms,the user association problem with the constraint of limited backhaul capacity was modelled as an ILP problem and then finished the connection between the user and the base station of microcell by solving this problem with dynamic programming method.Therefor,Lagrangian dual decomposition (LDD) was applied in an iteration algorithm for spectrum resource allocation and power allocation.The simulation results show that compared with traditional schemes,the proposed algorithm can significantly improve the energy efficiency and spectrum efficiency of system and use the microcell’s load capacity more efficiently. |
format | Article |
id | doaj-art-85f7518ed5aa430eba7935a1726bddc1 |
institution | Kabale University |
issn | 1000-436X |
language | zho |
publishDate | 2019-12-01 |
publisher | Editorial Department of Journal on Communications |
record_format | Article |
series | Tongxin xuebao |
spelling | doaj-art-85f7518ed5aa430eba7935a1726bddc12025-01-14T07:18:04ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2019-12-0140869759730834Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacityXuanli WUXu CHENAiming at the scenarios which consider the constraint of backhaul capacity restriction and interference threshold in ultra-dense networks (UDN),an integer linear programming (ILP) and Lagrangian dual decomposition (LDD) based joint optimization algorithm of energy efficiency and spectrum efficiency was proposed.In the proposed algorithms,the user association problem with the constraint of limited backhaul capacity was modelled as an ILP problem and then finished the connection between the user and the base station of microcell by solving this problem with dynamic programming method.Therefor,Lagrangian dual decomposition (LDD) was applied in an iteration algorithm for spectrum resource allocation and power allocation.The simulation results show that compared with traditional schemes,the proposed algorithm can significantly improve the energy efficiency and spectrum efficiency of system and use the microcell’s load capacity more efficiently.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2019205/ultra-dense networkenergy efficiencyspectrum efficiencyinteger linear programmingLagrangian dual decomposition |
spellingShingle | Xuanli WU Xu CHEN Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity Tongxin xuebao ultra-dense network energy efficiency spectrum efficiency integer linear programming Lagrangian dual decomposition |
title | Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity |
title_full | Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity |
title_fullStr | Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity |
title_full_unstemmed | Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity |
title_short | Joint energy efficiency and spectral efficiency optimization algorithm for UDN under the restriction of interference threshold and backhaul capacity |
title_sort | joint energy efficiency and spectral efficiency optimization algorithm for udn under the restriction of interference threshold and backhaul capacity |
topic | ultra-dense network energy efficiency spectrum efficiency integer linear programming Lagrangian dual decomposition |
url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2019205/ |
work_keys_str_mv | AT xuanliwu jointenergyefficiencyandspectralefficiencyoptimizationalgorithmforudnundertherestrictionofinterferencethresholdandbackhaulcapacity AT xuchen jointenergyefficiencyandspectralefficiencyoptimizationalgorithmforudnundertherestrictionofinterferencethresholdandbackhaulcapacity |