@inbook{a92ab261016c4d4b9bcd9c577be5ba21,
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 Hoglund and Mischa Dohler",
note = "Funding Information: 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. Publisher Copyright: {\textcopyright} 2022 IEEE.; 2022 IEEE International Conference on Communications, ICC 2022 ; Conference date: 16-05-2022 Through 20-05-2022",
year = "2022",
month = aug,
day = "11",
doi = "10.1109/ICC45855.2022.9839227",
language = "English",
series = "IEEE International Conference on Communications",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1992--1997",
booktitle = "ICC 2022 - IEEE International Conference on Communications",
address = "United States",
}