Overview of ARIB Standards (STD-T94)｜Association of Radio Industries and Businesses

Overview of ARIB Standards (STD-T94)

1. Overview

STD Number	ARIB STD-T94
Standard Name	Broadband Mobile Wireless Access System (WiMAX™ applied in Japan)
General Description	This standard is developed to realize the system called WiMAX in Japan and specifies requirements for the radio equipment of radio stations for “OFDMA Broadband Mobile Wireless Access System” using 2.5 GHz band defined in the Article 49-28 of the Ordinance Regulating Radio Equipment and having 5ms transmitting burst length, and “OFDMA/TDMA TDD Broadband Mobile Wireless Access System” which are related to WiMAX system defined in the Article 49-29 of the Ordinance Regulating Radio Equipment. It is worth noting that the Broadband Mobile Wireless Access System is compatible with the Fifth-Generation Mobile communications system. *OFDMA: Orthogonal Frequency Division Multiple Access, TDMA: Time Division Multiple Access, SC-FDMA: Single Carrier Frequency Division Multiple Access, TDD: Time Division Duplex This system is one of the broadband mobile wireless access systems using 2.5 GHz band, and a wireless broadband system with constant mobility. The system corresponds to the broadband use by flexible band allocation for uplink and downlink, and provides public broadband communication services based on the connection to the all-IP based network. This system can provide the advanced mobile communication services mainly in urban areas and offer broadband services in disadvantaged areas. It is noted that this standard is prepared in English only.

STD Number

ARIB STD-T94

Standard Name

Broadband Mobile Wireless Access System (WiMAX™ applied in Japan)

General Description

This standard is developed to realize the system called WiMAX in Japan and specifies requirements for the radio equipment of radio stations for “OFDMA Broadband Mobile Wireless Access System” using 2.5 GHz band defined in the Article 49-28 of the Ordinance Regulating Radio Equipment and having 5ms transmitting burst length, and “OFDMA/TDMA TDD Broadband Mobile Wireless Access System” which are related to WiMAX system defined in the Article 49-29 of the Ordinance Regulating Radio Equipment. It is worth noting that the Broadband Mobile Wireless Access System is compatible with the Fifth-Generation Mobile communications system.

*OFDMA: Orthogonal Frequency Division Multiple Access, TDMA: Time Division Multiple Access, SC-FDMA: Single Carrier Frequency Division Multiple Access, TDD: Time Division Duplex

This system is one of the broadband mobile wireless access systems using 2.5 GHz band, and a wireless broadband system with constant mobility. The system corresponds to the broadband use by flexible band allocation for uplink and downlink, and provides public broadband communication services based on the connection to the all-IP based network. This system can provide the advanced mobile communication services mainly in urban areas and offer broadband services in disadvantaged areas.

It is noted that this standard is prepared in English only.

2. Amendment History

Ver.	Amendment or Enactment Date	Amendment summary
4.2	03.01.2024	Reflection of WiMAX Forum standard which corresponds to 3GPP Specification Release 17.
4.1	10.29.2021	Reflection of WiMAX Forum standard which corresponds to 3GPP Specification Release 16.
4.0	09.28.2020	Necessary revision based on the amendment of the domestic regulations related to the introduction of new Broadband Mobile Wireless Access System which is compatible with the Fifth-Generation Mobile communications system, and the reflection of WiMAX Forum standard which corresponds to 3GPP Specification Release 15.
3.6	04.12.2018	Necessary revision based on the amendment of the domestic regulations related to the introduction of eMTC, HPUE, the addition of 256QAM to the uplink modulation, and the reflection of updated WiMAX Forum standard. 　eMTC：enhanced Machine Type Communication 　HPUE：High Power User Equipment Amendment of the title of the standard according to the scope.
3.5	07.27.2017	Addition of the submitted confirmation notes relating to the right to work essential IPR and References for Ver. 3.4 Reference: IPR applicable to countries other than Japan. These are submitted as a reference.
3.4	12.09.2016	Revision corresponding to the addition of 256QAM to the downlink modulation and the change to enable uplink carrier-aggregation to WiMAX system, and reflects the revision of WiMAX forum standard referred by this standard. It is based on the system arrangement by Ministry of Internal Affairs and Communications to aim to the BWA’s functional enhancement including an acceleration of data transfer rate by referring to the international standardization trend at WiMAX Forum and 3GPP.
3.3	05.17.2015	Addition of the submitted confirmation notes relating to the right to work essential Industrial Property Rights () and References for Ver. 3.2 Reference: IPR applicable to countries other than Japan. These are submitted as a reference
3.2	07.31.2014	Revision corresponding to the update of WiMAX forum standard (to which this standard refers) and revision of the related ministerial Ordinance
3.1	05.18.2014	Addition of the submitted confirmation notes relating to the right to work essential IPR and References for Ver. 3.0 Reference: IPR applicable to countries other than Japan. These are submitted as a reference
3.0	07.03.2013	Revision corresponding to the update of WiMAX forum standard (to which this standard refers) and revision of the related ministerial Ordinance
2.4	07.03.2012	Necessary change corresponding to the submission of confirmation notes relating the right to work essential IPR
2.3	02.14.2012	This standard relates to Orthogonal Frequency Division Multiple Access (OFDMA) Broadband Mobile Wireless Access System using radio wave of the frequency between 2,545MHz above and 2,625MHz or below defined in the Article 49-28 of the Ordinance Regulating Radio Equipment. (So-called mobile WiMAX). The Ver. 1.0 of this standard is developed on December 12, 2007. The standard is updated to Ver. 2.3 after adding a submitted confirmation note relating to the right to work essential IPR for Ver. 1.0 and that for Ver. 2.0, respectively.
2.2	07.07.2011	Necessary revision based on the revisions of the Ordinance Regulating Radio Equipment for obtaining high transmission rate, improving service area, etc. Main revision items are as follows: (1) Addition of provision: Addition of 64QAM for uplink transmission (2) Change of provisions: (i ) Increase in uplink transmitting antenna power: change to “400mW or less” from “200mW or less” (ii) Increase in uplink transmitting antenna gain: change to “5dBi or less” from “2dBi or less” (3) Leakage power of adjacent uplink channels 5MHz system: Change to “5dBm or less” from “2dBm or less” 10MHz system: Change to “3dBm or less” from “0dBm or less”
2.1	05.28.2011	Addition of confirmation notes relating to the right to work essential IPR and reference for Ver. 2.0
2.0	04.26.2010	(1) Revision corresponding to the update of international standard transposed by STD-T94 - Issue of new release of WiMAX forum standard - Change of STD-T94 structure (2) Main revision corresponding to Japanese national standard amendment - Introduction of WiMAX low power repeater (3) Change of description methods and editorial corrections
1.5	07.29.2009	Addition of IPR confirmation notes submitted after the revision of Ver. 1.4
1.4	05.18.2009	Addition of IPR confirmation notes submitted after the revision of Ver. 1.3
1.3	09.25.2008	Addition of IPR confirmation notes submitted after the revision of Ver. 1.2
1.2	06.06.2008	Addition of IPR confirmation notes submitted after the revision of Ver. 1.1
1.1	05.19.2008	Addition of the specific method to realize the provision defined in the Notification enforced on November 29, 2007: “Land mobile station whose absolute gain of transmitting antenna exceeds 2dB shall not communicate with the base station located in a place other than depopulated area, remote islands, village and the place where Minster for Internal Affairs and Communications approves”
1.0	12.12.2007	Enactment