Mesh Architecture for Efficient Integrated Access and Backhaul Networking

Zhai, Bangzhao; Yu, Mengxin; Tang, Aimin; Wang, Xudong

doi:10.1109/wcnc45663.2020.9120546

Cited by 12 publications

(9 citation statements)

References 3 publications

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“…As shown in (Zhai et al, 2020), mesh-architecture IAB network can achieve 6.70∼40.56% overall throughput improvement compared with DAG-architecture IAB network. The authors in (Gomez-Cuba and Zorzi, 2020a) addressed the joint link scheduling and power allocation problem in a mesh-architecture IAB network with multi-user MIMO (MU-MIMO) and elastic traffic arrival process.…”

Section: Routingmentioning

confidence: 96%

“…DAG and ST limit the flexibility and efficiency due to the fixed parent-to-child relation between two adjacent IAB nodes. Studies in both [89] and [71] proved that mesh-architecture based IAB can achieve a considerable improvement in comparison with DAG-architecture based IAB. It is expected that mesh-architecture-based IAB will be introduced in the Rel-17.…”

Section: B Schedulingmentioning

confidence: 99%

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A Survey on Integrated Access and Backhaul Networks

2021

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Benefiting from the usage of the high-frequency band, utilizing part of the large available bandwidth for wireless backhauling is feasible without considerable performance sacrifice. In this context, integrated access and backhaul (IAB) has been proposed by the Third Generation Partnership Project (3GPP) to reduce the expenses related to the deployment of fiber optics for 5G and beyond networks. In this paper, first, a brief introduction of IAB based on the 3GPP release is presented. Then, the existing research on IAB networks based on 3GPP specifications and possible non-3GPP research extensions are surveyed. The research on non-3GPP extensions includes the integration of IAB networks with other advanced techniques beyond the currently defined protocol stacks, such as the integration of IAB to cache-enabled, optical communication transport, and non-terrestrial networks. Finally, the challenges and opportunities related to the development and commercialization of the IAB networks are discussed.

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Section: Routingmentioning

confidence: 96%

Section: B Schedulingmentioning

confidence: 99%

A Survey on Integrated Access and Backhaul Networks

2021

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“…. ), the design of NGWBs requires first the selection of the node placement, next the decision on links activation [8], [9] and where to place network functions [10], and finally how to properly route traffic.…”

Section: Introductionmentioning

confidence: 99%

On the Properties of Next Generation Wireless Backhaul

Gemmi

Cigno

Maccari

2023

IEEE Trans. Netw. Sci. Eng.

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With the advent of 5G, cellular networks require a high number of base stations, possibly interconnected with wireless links, an evolution introduced in the last revision of 5G as the Integrated Access and Backhaul (IAB). Researchers are now working to optimize the complex topologies of the backhaul network, using synthetic models for the underlying visibility graph, i.e., the graph of possible connections between the base stations. The goal of this paper is to provide a novel methodology to generate visibility graphs starting from real data (and the data sets themselves together with the source code for their manipulation), in order to base the IAB design and optimization on assumptions that are as close as possible to reality. We introduce a GPU-based method to create visibility graphs from open data, we analyze the properties of the realistic visibility graphs, and we show that different geographic areas produce very different graphs. We run state-of-the-art algorithms to create wireless backhaul networks on top of visibility graphs, and we show that the results that exploit synthetic models are far from those that use our realistic graphs. Our conclusion is that the data-based approach we propose is essential to design mobile networks that work in a variety of real-world situations.

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“…It should be mentioned that the problem of routing in IAB networks has been previously studied in the cases with different numbers of hops [10]- [14], [31]- [33]. Also, [24] develops a cost-optimal node placement scheme, and [34] proposes a joint node placement and resource allocation scheme maxi-mizing the downlink sum rate of IAB networks.…”

Section: Introductionmentioning

confidence: 99%

On Topology Optimization and Routing in Integrated Access and Backhaul Networks: A Genetic Algorithm-Based Approach

Madapatha

Makki

Muhammad

et al. 2021

IEEE Open J. Commun. Soc.

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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.

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Mesh Architecture for Efficient Integrated Access and Backhaul Networking

Cited by 12 publications

References 3 publications

A Survey on Integrated Access and Backhaul Networks

A Survey on Integrated Access and Backhaul Networks

On the Properties of Next Generation Wireless Backhaul

On Topology Optimization and Routing in Integrated Access and Backhaul Networks: A Genetic Algorithm-Based Approach

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