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Integrated Access and Backhaul in Millimeter-Wave Cellular : Benefits and Challenges

The recently proposed NR-ready integrated access and backhaul (IAB) architecture promises to bring a cost-efficient deployment solution for both coverage extension and capacity boosting in the emerging 5G/5G+ systems. While its impact on the coverage extension was thoroughly addressed in the literature, the effect of advanced functionalities such as multihop, multi-connectivity, and multi-beam operations on the throughput remained unclear. We review and characterize the system-level impact of these capabilities on the performance of self-backhauled IAB systems operating in half-duplex mode and utilizing millimeter-wave (mmWave) technology across both access and backhaul. Our results indicate that the throughput gain of multihopping and multi-beaming is significant even without multi-connectivity operation. Another important lesson is that in all-mmWave systems with link blockage, multi-connectivity with link switching allows achieving self-load balancing. Finally, we outline future research directions.

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Informasi Detail

Judul Seri

IEEE COMMUNICATIONS MAGAZINE; Vol.60 No.9 September 2022

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 81-86

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

SYMBOLS
THROUGHPUT
PROTOCOLS
5G MOBILE COMMUNICATION
SWITCHES
3GPP
HALF-DUPLEX SYSTEM

Info Detail Spesifik

DOI: 10.1109/MCOM.004.2101082

Pernyataan Tanggungjawab

Yekaterina Sadovaya, Dmitri Moltchanov, Wei Mao, Oner Orhan, Shu-ping Yeh, Hosein Nikopour, Shilpa Talwar, Sergey Andreev

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