Hierarchical Scheduling for Suppression of Fronthaul Delay in C-RAN with Dynamic Functional Split

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F21%3A00350042" target="_blank" >RIV/68407700:21230/21:00350042 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1109/MCOM.001.2000697" target="_blank" >https://doi.org/10.1109/MCOM.001.2000697</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/MCOM.001.2000697" target="_blank" >10.1109/MCOM.001.2000697</a>

Result language

angličtina

Original language name

Hierarchical Scheduling for Suppression of Fronthaul Delay in C-RAN with Dynamic Functional Split

Original language description

The cloud radio access network (C-RAN) can potentially reduce a network's deployment cost and energy consumption. However, a connection between a centralized baseband unit and distributed remote radio heads, known as a fronthaul, introduces an additional delay to both control and user planes. This delay is a serious limiting factor for radio resource management functionalities, such as scheduling, because the radio resources are assigned to users according to outdated channel quality information if the fronthaul delay is non-zero. This article provides an overview of existing scheduling approaches suitable for C-RAN and identifies their potential limitations. Based on these limitations, we outline a framework for hierarchical scheduling. The hierarchical scheduling mitigates a negative impact of the fronthaul delay on the throughput of non-cell-edge users and enables efficient retransmission of erroneous data. Besides, cell-edge users can still benefit from interference mitigation techniques requiring centralized control. We compare individual scheduling approaches and show that hierarchical scheduling increases the network throughput (by up to 26 percent) and reduces the number of retransmissions with respect to the existing solutions.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20203 - Telecommunications

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

IEEE Communications Magazine

ISSN

0163-6804

e-ISSN

1558-1896

Volume of the periodical

59

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

95-101

UT code for WoS article

000652058200015

EID of the result in the Scopus database

2-s2.0-85106531693