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.

genetic algorithm

Integrated access and backhaul

coverage probability

densification

germ-grain model

stochastic geometry

Optimization

(mmWave) communications

Topology

wireless backhaul

relay

Wireless communication

tree foliage

3GPP

IAB

Routing

node selection

machine learning

millimeter wave

poisson point process

5G NR

Network topology

topology optimization

blockage

Resource management

3GPP

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) (101015956-Hexa-X), 2021-01-01 -- 2023-06-30.

Subject Categories

Computer Engineering

Telecommunications

Communication Systems

DOI

10.1109/OJCOMS.2021.3114669

More information

Latest update

1/17/2022