Overview of Standards and Technical Reports

Overview of ARIB Standards (STD-T120)

1. Overview

STD Number ARIB STD-T120
Standard Name IMT Systems based on 3GPP Specifications
General Description

This ARIB Standard is concerned with IMT Systems (International Mobile Telecommunications Systems)based on 3GPP Specifications. It defines the system specifications including IMT-2020/5G such as radio access network, core transport network, codec, security, and service functions.


ARIB STD-T120 was enacted as a standard taking over ARIB STD-63 and STD-T104. It will be revised in accordance with the updates of 3GPP specifications.


2. Amendment History

Ver. Amendment or Enactment Date Amendment summary
3.50 03.01.2024 Reflected the changes of IMT Systems specifications (from Release 8 to Release 17) updated by 3GPP until September 2023.
3.40 10.04.2023 Reflected the changes of IMT Systems specifications (from Release 8 to Release 17) updated by 3GPP until June 2023.
3.30 10.04.2023 Reflected the changes of IMT Systems specifications (from Release 8 to Release 17) updated by 3GPP until March 2023.
3.20 03.03.2023 Reflected the changes of IMT Systems specifications (from Release 8 to Release 17) updated by 3GPP until December 2022.
3.10 03.03.2023 Reflected the changes of IMT Systems specifications (from Release 8 to Release 17) updated by 3GPP until September 2022.
3.00 10.06.2022 Reflected the changes of IMT Systems specifications (from Release 8 to Release 16) updated by 3GPP until June 2022. Also, Release 17 was newly added.
2.70 10.06.2022 Reflected the changes of IMT Systems specifications (from Release 8 to Release 16) updated by 3GPP until March 2022.
2.60 04.08.2022 Reflected the changes of IMT Systems specifications (from Release 8 to Release 16) updated by 3GPP until December 2021.
2.50 04.08.2022 Reflected the changes of IMT Systems specifications (from Release 8 to Release 16) updated by 3GPP until September 2021.
2.40 10.29.2021 Reflected the changes of IMT Systems specifications (from Release 8 to Release 16) updated by 3GPP until June 2021.
2.30 10.29.2021 Reflected the changes of IMT Systems specifications (from Release 8 to Release 16) updated by 3GPP until March 2021.
2.20 04.23.2021 Reflected the changes of IMT Systems specifications (from Release 8 to Release 16) updated by 3GPP until December 2020.
2.10 04.23.2021 Reflected the changes of IMT Systems specifications (from Release 8 to Release 16) updated by 3GPP until September 2020.
2.00 09.28.2020 Reflected the changes of IMT Systems specifications (from Release 8 to Release 15) updated by 3GPP until June 2020. Also, Release 16 was newly added.
1.70 09.28.2020 Reflected the changes of IMT Systems specifications (from Release 8 to Release 15) updated by 3GPP until March 2020.
1.60 03.18.2020 Reflected the changes of IMT Systems specifications (from Release 8 to Release 15) updated by 3GPP until December 2019.
1.50 12.05.2019 Reflected the changes of IMT Systems specifications (from Release 8 to Release 15) updated by 3GPP until September 2019.
1.40 12.05.2019 Reflected the changes of IMT Systems specifications (from Release 8 to Release 15) updated by 3GPP until June 2019.
1.30 07.30.2019 Reflected the changes of IMT Systems specifications (from Release 8 to Release 15) updated by 3GPP until March 2019.
1.20 04.12.2019 Reflected the changes of IMT Systems specifications (from Release 8 to Release 15) updated by 3GPP until December 2018.
1.10 01.21.2019 Reflected the changes of IMT Systems specifications (from Release 8 to Release 15) updated by 3GPP until September 2018.
1.00 10.11.2018 Enactment


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