Open AccessEnergy‐efficient user association and cell sleeping strategy for multi‐tier ultra‐dense small cell networks
Author(s) -
Sun Yang,
Chang Yongyu
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2018.0945
Subject(s) - computer science , energy consumption , association (psychology) , integer programming , energy (signal processing) , integer (computer science) , mathematical optimization , efficient energy use , iterative method , computational complexity theory , algorithm , mathematics , engineering , electrical engineering , philosophy , statistics , epistemology , programming language
In this letter, the authors formulate the energy‐efficient user association and cell sleeping optimisation problem which applies to the multi‐tier ultradense network scenarios as a complex 0–1 integer programming and propose an alternating iterative method to solve the problem via two low‐complexity sub‐problems. The simulation results show that the proposed strategy can steadily reduce overall energy consumption compared with the existing strategies.