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, Communication Systems

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, Communication Systems

IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY

2644-125X (eISSN)

Vol. 2 2273-2291

A flagship for B5G/6G vision and intelligent fabric of technology enablers connecting human, physical, and digital worlds (Hexa-X )

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

More information

Latest update

2/24/2022