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Overview of ARIB Standards (STD-B46)

Overview of ARIB Standards (STD-B46)

1. Overview

STD Number	ARIB STD-B46
Standard Name	Transmission System for Terrestrial Mobile Multimedia Broadcasting based on Connected Segment Transmission
Enactment Date	11.05.2010
General Description	This standard specifies transmission system about terrestrial multimedia broadcasting by connected segment transmission system (terrestrial multimedia broadcasting by ISDB-Tmm system and ISDB-TSB system) among terrestrial multimedia broadcasting for mobile receiver and portable terminal. This system is adopted in national technical standard for terrestrial multimedia broadcasting by connected segment transmission system which is carried out by terrestrial basic broadcasting station using radio wave less than 222MHz more than 207.5MHz (VHF-High band) (hereinafter referred to as V-High terrestrial multimedia broadcasting by ISDB-Tmm system), and terrestrial multimedia broadcasting by connected segment transmission system which is carried out by terrestrial basic broadcasting station using radio wave less than 108MHz more than 95MHz(VHF-Low band) (hereinafter referred to as V-Low terrestrial multimedia broadcasting by ISDB-TSB system). Among standards related to V-High terrestrial multimedia broadcasting by ISDB-Tmm system and V-Low terrestrial multimedia broadcasting by ISDB-TSB system, about standards such as coding system, multiplex system and so on, refer to each standard enacted separately. This standard is based on the items provided in “Standard transmission system on digital broadcasting among standard television broadcasting and the like (Ordinance of the Ministry of Internal Affairs and Communications No.87, 2012)”, “Notification of the Ministry of Internal Affairs and Communications (Notification of MIC No.303, 2012, Notification of MIC No.304, 2012, Notification of MIC No.306, 2012)” about the above-mentioned Ordinance, and “Ordinance Regulating Radio Equipment (Rule of Radio Regulating Council No.18, 1950)”, and is provided.

　Keywords

Keyword	Description
Multimedia broadcasting	Broadcasting that transmits digital information such as video, audio, data, etc., and does not correspond to television broadcasting, and is not the broadcasting which is carried by superimposing on the radio wave of other broadcasting.
Terrestrial multimedia broadcasting	Broadcasting that corresponds to terrestrial broadcasting for mobile receiving, among multimedia broadcasting
OFDM segment	Basic frequency band (1/14 of the channel bandwidth for terrestrial television) of transmission signal in which control signal carrier is added to data carrier, and, the frame structured signal
ISDB-Tmm	Abbreviation for ISDB for Terrestrial Multi-Media Broadcasting Broadcasting system of terrestrial multimedia broadcasting for mobile receiver and portable terminal that transmission band is composed of one or thirteen OFDM segments.
ISDB-TSB	Abbreviation for ISDB for Terrestrial Sound Broadcasting Broadcasting system of terrestrial multimedia broadcasting for mobile receiver and portable terminal that transmission band is composed of one or three OFDM segments.
Connected Transmission	Transmission form for the signal of ISDB-TSB, ISDB-Tmm which are allocated without guard band.

2. Amendment History

Ver.	Amendment or Enactment Date	Amendment summary
2.2	09.30.2015	According to the amendment of Notification, about center frequency of carrier wave in Part 2 “Transmission system of terrestrial multimedia broadcasting by connected segment transmission system which is applied to VHF-Low band”, when there occurs interference or a possibility of interference, frequency that can be used when it is really necessary to avoid them is added. Also, notation of kanji and kana characters is unified.
2.1	12.16.2014	According to the amendment of Ordinance and Notification, the provision of AC (Auxiliary Channel) signal is reconsidered among the provisions of Part 2 “Transmission system of terrestrial multimedia broadcasting by connected segment transmission system which is applied to VHF-Low band”, and the provision of protection against disasters and safety information in the local area is added. Also, the records of Ordinance, etc. in Part 1 “Transmission system of terrestrial multimedia broadcasting by connected segment transmission system which is applied to VHF-High band” is reconsidered,
2.0	03.18.2014	According to the amendment of Ordinance and so on, transmission system of terrestrial multimedia broadcasting by ISDB-TSB using VHF-Low band is newly added as Part 2, and existing standard is set as Part 1 which provides transmission system of terrestrial multimedia broadcasting by ISDB-Tmm system using VHF-High band, and Ordinances, etc. to be referred to are amended. Also, misprints are corrected and notation is unified.
1.3	12.18.2012	According to the amendment of Ordinance and Notification accompanied by the amendment of Broadcasting Act, Ordinance and Notification to be based on are modified and added, and Ordinance and Notification to be referred to are clarified. Also, notation and terms for other standards related to this standard are unified, and Attachment: Operational Guidelines are clarified.
1.2	07.03.2012	As the confirmation of essential industrial property was presented, necessary change is done.
1.1	03.28.2011	·In order to keep consistency with ITU-R draft Recommendation, table for transmission parameters of reference channel with bandwidth 6MHz is reconsidered, and table for transmission parameters of 7 and 8MHz and table of information rate are added in Annex. ·Operational guidelines as Attachment are newly added. ·Some terms are added, and the title of this standard both in Japanese and English are changed.
1.0	11.05.2010	Enactment

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