On Topology Optimization and Routing in Integrated Access and Backhaul Networks: A Genetic Algorithm-Based Approach
Journal article, 2021
In this paper, we study the problem of topology optimization and routing in integrated access and backhaul (IAB) networks, as one of the promising techniques for evolving 5G networks. We study the problem from different perspectives. We develop efficient genetic algorithm-based schemes for both IAB node placement and non-IAB backhaul link distribution, and evaluate the effect of routing on bypassing temporal blockages. Here, concentrating on millimeter wave-based communications, we study the service coverage probability, defined as the probability of the event that the user equipments' (UEs) minimum rate requirements are satisfied. Moreover, we study the effect of different parameters such as the antenna gain, blockage, and tree foliage on the system performance. Finally, we summarize the recent Rel-16 as well as the upcoming Rel-17 3GPP discussions on routing in IAB networks, and discuss the main challenges for enabling mesh-based IAB networks. As we show, with a proper network topology, IAB is an attractive approach to enable the network densification required by 5G and beyond.
blockage
machine learning
Network topology
wireless backhaul
Optimization
IAB
(mmWave) communications
coverage probability
Wireless communication
poisson point process
3GPP
Integrated access and backhaul
routing
genetic algorithm
3GPP
5G NR
millimeter wave
Topology
stochastic geometry
germ-grain model
relay
tree foliage
node selection
densification
Resource management
topology optimization
Routing
Author
Charitha Madapatha Madapathage Don
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Behrooz Makki
Ericsson
Ajmal Muhammad
Ericsson
Erik Dahlman
Ericsson
Mohamed-Slim Alouini
King Abdullah University of Science and Technology (KAUST)
Tommy Svensson
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
IEEE Open Journal of the Communications Society
2644125X (eISSN)
Vol. 2 2273-2291A flagship for B5G/6G vision and intelligent fabric of technology enablers connecting human, physical, and digital worlds (Hexa-X )
European Commission (EC) (EC/HE/101120332), 2023-10-01 -- 2027-09-30.
European Commission (EC) (EC/2020/101015956), 2021-01-01 -- 2023-06-30.
Subject Categories
Computer Engineering
Telecommunications
Communication Systems
DOI
10.1109/OJCOMS.2021.3114669