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SDN-Enabled Resource Management for Converged Fi-Wi 5G Fronthaul
- Source :
- IEEE Journal on Selected Areas in Communications, IEEE Journal on Selected Areas in Communications, 39(9):9373366, 2772-2788. Institute of Electrical and Electronics Engineers
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Abstract
- Future mobile networks will offer high data rates based on high-capacity fronthaul. Current fronthaul design has two main components that communicate via the common public radio interface and fiber links, i.e., remote units (RUs) that implement simple signal processing and centralized baseband units (CBBUs) in high power-consuming data centers that perform complex network functions. Various functional splits between CBBUs and RUs are feasible, inducing trade-offs between centralization gains and bandwidth demands. This design lacks in capacity and flexibility, motivating the use of converged fiber-wireless (Fi-Wi) fronthaul with high-bandwidth fiber and millimeter-wave links, and splits that move functionalities to RUs reducing the delay demands. Further flexibility is offered by analog radio-over-fiber fronthaul that supports dynamic functional splitting via software-defined networking (SDN). Ensuring acceptable delay for all RUs, i.e., minimizing fronthaul grade-of-service (GoS), requires selection of CBBUs, channel bandwidth and functional splits of RUs. The split type affects fronthaul power consumption determining which fronthaul components are active and their processing power. Using a simulated annealing-based dynamic fronthaul resource allocation (DFRA) scheme, we jointly optimize GoS and power consumption in a novel SDN Fi-Wi fronthaul. Our results show that DFRA minimizes GoS and power consumption for all load levels outperforming baseline approaches.
- Subjects :
- Computer Networks and Communications
Computer science
Wireless communication
Fi-Wi
7. Clean energy
Common Public Radio Interface
SDN
Channel capacity
functional split
Bandwidth
Virtualization
5G mobile communication
Bandwidth (computing)
Wireless
Resource management
Electrical and Electronic Engineering
Delays
business.industry
Baseband
Resource allocation
Power demand
Fronthaul
business
5G
Computer network
Subjects
Details
- Language :
- English
- ISSN :
- 15580008 and 07338716
- Volume :
- 39
- Issue :
- 9
- Database :
- OpenAIRE
- Journal :
- IEEE Journal on Selected Areas in Communications
- Accession number :
- edsair.doi.dedup.....302db5e88186eff1eb5256ee51642c93
- Full Text :
- https://doi.org/10.1109/jsac.2021.3064651