Open AccessCross‐tier cooperation load‐adapting interference management in ultra‐dense networks
Author(s) -
Zheng Chuangming,
Liu Longwei,
Zhang Hailin
Publication year - 2019
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2018.5900
Subject(s) - computer science , interference (communication) , base station , resource allocation , spectral efficiency , throughput , telecommunications link , resource management (computing) , computer network , macro , cellular network , single antenna interference cancellation , efficient energy use , distributed computing , telecommunications , wireless , engineering , channel (broadcasting) , electrical engineering , programming language
In ultra‐dense networks (UDNs), the interference management constitutes a great challenge due to the densely deployed base stations (BSs) and the traffic fluctuating with time. To tackle this challenge, the authors propose a cross‐tier cooperation load‐adapting interference management (CCLA‐IM) scheme in UDNS, which employs three technologies to mitigate inter‐cell interference (ICI) efficiently. Firstly, fractional frequency reuse technology is employed to coordinate the ICI among macro BSs (MBSs) as well as the ICI between MBSs and small BSs (sBSs). Secondly, they use load‐adapting resource allocation technology to mitigate ICI further when the sBSs traffic is partially loaded. Thirdly, the interference‐aware resource allocation can mitigate ICI further by optimising the physical resource blocks mapping methods. The simulation results show that the proposed CCLA‐IM can achieve considerable performance gain in system spectral efficiency, the throughput of sBSs, system energy efficiency and ICI distribution while the density of sBSs and the traffic are changing with time.