Novel Random Access Schemes for Small Data Transmission

Hui Zhou; Yansha Deng; Luca  Feltrin; Andreas  Höglund; Mischa  Dohler

doi:10.1109/ICC45855.2022.9839227

Novel Random Access Schemes for Small Data Transmission

Hui Zhou, Yansha Deng, Luca Feltrin, Andreas Höglund, Mischa Dohler

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding › peer-review

3 Citations (Scopus)

Abstract

Fifth Generation (5G) New Radio (NR) does not support data transmission during random access (RA) procedures, which results in unnecessary control signalling overhead, especially for small data transmission (SDT). Motivated by this, 3GPP has proposed 4/2-step SDT RA schemes based on the existing grant-based (4-step) and grant-free (2-step) RA schemes, with the aim to enable data transmission during RA procedures in Radio Resource Control (RRC) Inactive state. To compare the 4/2-step SDT RA schemes with the benchmark 4/2-step RA schemes, we provide a spatio-temporal analytical framework to evaluate the RA schemes, which jointly models the preamble detection, Physical Uplink Shared Channel (PUSCH) decoding, and data transmission procedures. Based on this analytical model, we derive the analytical expressions for the overall packet transmission success probability in each RACH attempt. Our results show that 2-step SDT RA scheme provides the highest overall packet transmission success probability, but performance gain decreases with the increase of device intensity.

Original language	English
Title of host publication	ICC 2022 - IEEE International Conference on Communications
Publisher	IEEE
Pages	1992-1997
Number of pages	6
ISBN (Electronic)	9781538683477
DOIs	https://doi.org/10.1109/ICC45855.2022.9839227
Publication status	Published - 11 Aug 2022
Externally published	Yes
Event	IEEE International Conference on Communications - Duration: 16 May 2022 → 20 May 2022

Publication series

Name	IEEE International Conference on Communications
Volume	2022-May
ISSN (Print)	1550-3607

Conference

Conference	IEEE International Conference on Communications
Abbreviated title	ICC 2022
Period	16/05/22 → 20/05/22

Bibliographical note

Publisher Copyright:
© 2022 IEEE.

Funding

Substituting the Laplace Transform of the aggregated intra-cell interference (26) into (25), we can obtain (15) ACKNOWLEDGMENT This work was supported by Engineering and Physical Sciences Research Council (EPSRC), U.K., under Grant EP/W004348/1.

Funders	Funder number
Engineering and Physical Sciences Research Council	EP/W004348/1

Keywords

2-step
4-step
Grant-based
Grant-free
Small data

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering

Access to Document

10.1109/ICC45855.2022.9839227

Cite this

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title = "Novel Random Access Schemes for Small Data Transmission",

abstract = "Fifth Generation (5G) New Radio (NR) does not support data transmission during random access (RA) procedures, which results in unnecessary control signalling overhead, especially for small data transmission (SDT). Motivated by this, 3GPP has proposed 4/2-step SDT RA schemes based on the existing grant-based (4-step) and grant-free (2-step) RA schemes, with the aim to enable data transmission during RA procedures in Radio Resource Control (RRC) Inactive state. To compare the 4/2-step SDT RA schemes with the benchmark 4/2-step RA schemes, we provide a spatio-temporal analytical framework to evaluate the RA schemes, which jointly models the preamble detection, Physical Uplink Shared Channel (PUSCH) decoding, and data transmission procedures. Based on this analytical model, we derive the analytical expressions for the overall packet transmission success probability in each RACH attempt. Our results show that 2-step SDT RA scheme provides the highest overall packet transmission success probability, but performance gain decreases with the increase of device intensity.",

keywords = "2-step, 4-step, Grant-based, Grant-free, Small data",

author = "Hui Zhou and Yansha Deng and Luca Feltrin and Andreas H{\"o}glund and Mischa Dohler",

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year = "2022",

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doi = "10.1109/ICC45855.2022.9839227",

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AU - Zhou, Hui

AU - Deng, Yansha

AU - Feltrin, Luca

AU - Höglund, Andreas

AU - Dohler, Mischa

PY - 2022/8/11

Y1 - 2022/8/11

N2 - Fifth Generation (5G) New Radio (NR) does not support data transmission during random access (RA) procedures, which results in unnecessary control signalling overhead, especially for small data transmission (SDT). Motivated by this, 3GPP has proposed 4/2-step SDT RA schemes based on the existing grant-based (4-step) and grant-free (2-step) RA schemes, with the aim to enable data transmission during RA procedures in Radio Resource Control (RRC) Inactive state. To compare the 4/2-step SDT RA schemes with the benchmark 4/2-step RA schemes, we provide a spatio-temporal analytical framework to evaluate the RA schemes, which jointly models the preamble detection, Physical Uplink Shared Channel (PUSCH) decoding, and data transmission procedures. Based on this analytical model, we derive the analytical expressions for the overall packet transmission success probability in each RACH attempt. Our results show that 2-step SDT RA scheme provides the highest overall packet transmission success probability, but performance gain decreases with the increase of device intensity.

AB - Fifth Generation (5G) New Radio (NR) does not support data transmission during random access (RA) procedures, which results in unnecessary control signalling overhead, especially for small data transmission (SDT). Motivated by this, 3GPP has proposed 4/2-step SDT RA schemes based on the existing grant-based (4-step) and grant-free (2-step) RA schemes, with the aim to enable data transmission during RA procedures in Radio Resource Control (RRC) Inactive state. To compare the 4/2-step SDT RA schemes with the benchmark 4/2-step RA schemes, we provide a spatio-temporal analytical framework to evaluate the RA schemes, which jointly models the preamble detection, Physical Uplink Shared Channel (PUSCH) decoding, and data transmission procedures. Based on this analytical model, we derive the analytical expressions for the overall packet transmission success probability in each RACH attempt. Our results show that 2-step SDT RA scheme provides the highest overall packet transmission success probability, but performance gain decreases with the increase of device intensity.

KW - 2-step

KW - 4-step

KW - Grant-based

KW - Grant-free

KW - Small data

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M3 - Conference proceeding

T3 - IEEE International Conference on Communications

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EP - 1997

BT - ICC 2022 - IEEE International Conference on Communications

PB - IEEE

T2 - IEEE International Conference on Communications

Y2 - 16 May 2022 through 20 May 2022

ER -

Novel Random Access Schemes for Small Data Transmission

Abstract

Publication series

Conference

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this