Overview of ARIB Standards (STD-T120)｜Association of Radio Industries and Businesses

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.

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
4.20	03.25.2025	Reflected the changes of IMT Systems specifications (from Release 8 to Release 18) updated by 3GPP until December 2024.
4.10	03.25.2025	Reflected the changes of IMT Systems specifications (from Release 8 to Release 18) updated by 3GPP until September 2024.
4.00	10.29.2024	Reflected the changes of IMT Systems specifications (from Release 8 to Release 17) updated by 3GPP until June 2024. Moreover, Release 18 was newly added.
3.70	10.29.2024	Reflected the changes of IMT Systems specifications (from Release 8 to Release 17) updated by 3GPP until March 2024.
3.60	10.29.2024	Reflected the changes of IMT Systems specifications (from Release 8 to Release 17) updated by 3GPP until December 2023.
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