ARIB 8495B Manual de usuario
Association of Radio Industries and Businesses (ARIB)
UWB (ULTRA-WIDEBAND)
RADIO SYSTEMS
ARIB STD-T91
ARIB STANDARD
ENGLISH TRANSLATION
Established on December 12th, 2006
ARIB STD-T91 Ver. 1.0
General Notes to the English translation of ARIB Standards and Technical Reports
1. The copyright of this document is ascribed to the Association of Radio Industries and
Businesses (ARIB).
2. All rights reserved. No part of this document may be reproduced, stored in a retrieval
system, or transmitted, in any form or
by any means, without the prior written
permission of ARIB.
3. The ARIB Standards and ARIB Technical Reports are usually written in Japanese
and approved by the ARIB Standard Assembly. This document is a translation into
English of the approved document for the purpose of convenience of users. If there are
any discrepancies in the content, expressions, etc., between the Japanese original and
this translated document, the Japanese original shall prevail.
4. The establishment, revision and abolishment of
ARIB Standards and Technical
Reports are approved at the ARIB Standard Assembly, which meets several times a
year. Approved ARIB Standards and Technical Reports, in their original language, are
made publicly available in hard copy, CDs or through web posting, generally in about
one month after the date of approval. The original document of this translation may
have been further revised and therefore users are encouraged to check the latest
version at an appropriate page under the following URL:
http://www.arib.or.jp/english/index.html
ARIB STD-T91
Introduction
With participation of radio communication equipment manufacturers, broadcasting
equipment manufacturers, telecommunication operators, broadcasters and general equipment
users, Association of Radio Industries and Businesses (ARIB) defines basic technical
requirements for standard specifications of radio equipment, etc. as an “ARIB STANDARD” in
the field of various radio systems.
In conjunction with national technical standards which are intended for effective spectrum
utilization and avoidance of interference with other spectrum users, an ARIB STANDARD is
intended as a standard for use by the private sector by compiling various voluntary standards
regarding the adequate quality of radio and broadcasting service, compatibility issues, etc. It
aims to enhance convenience for radio equipment manufacturers, telecommunication operators,
broadcasting equipment manufacturers, broadcasters and general users.
An ARIB STANDARD herein is published as “UWB (Ultra-Wideband) Radio Systems”. In
order to ensure fairness and transparency in the defining stage, the standard was decided by
consensus of the standard council with participation of interested parties including radio
equipment manufacturers, telecommunication operators, broadcasters, testing organizations,
general users, etc. with impartiality.
With the radio system described in the ARIB STANDARD herein, the electrical power
spreads over a wide bandwidth, and therefore it is necessary to avoid radio interference to
various radio systems in the band. In order to avoid harmful radio interferences to other radio
systems, “Operational Guidelines for UWB Radio Systems” and “Design Guidelines for UWB
Radio Systems” were also documented and attached hereto as a reference material.
It is our sincere hope that the standard would be widely used by radio equipment
manufacturers, testing organizations, general users, etc.
ARIB STD-T91
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Contents
Introduction
Chapter 1 General Descriptions ........................................................................................................ 1
1.1 Outline ................................................................................................................................... 1
1.2 Scope of the Standard ........................................................................................................... 1
1.3 Reference regulations ........................................................................................................... 1
Chapter 2 Standard System .............................................................................................................. 3
2.1 System Overview................................................................................................................... 3
2.2 System Configurations.......................................................................................................... 3
Chapter 3 Technical Requirements for Radio Equipment .............................................................. 6
3.1 General Conditions ............................................................................................................... 6
3.2 Transmitter............................................................................................................................ 6
3.3 Receiver................................................................................................................................ 10
3.4 Controller ............................................................................................................................. 13
3.5 Connections with Telecommunication Circuit Equipment .............................................. 13
3.6 Antenna ................................................................................................................................ 14
3.7 Others................................................................................................................................... 14
Chapter 4 Measurement Methods................................................................................................... 15
Annex 1 Test Items in relation to Technical Regulations Conformity Certification for Specified
Radio Equipment .......................................................................................................................... 17
Annex 2 Operational Guidelines for UWB Radio Systems ........................................................... 18
Annex 3 Design Guidelines for UWB Radio Equipment ............................................................... 22
ARIB STD-T91
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Chapter 1 General Descriptions
1.1 Outline
The standard defines requirements of the radio equipment of ultra-wideband radio stations
stipulated in item 2 of paragraph 2, Article 4.4 of Regulations for Enforcement of Radio Law
(This refers to the radio stations that mainly handle data transmissions with the required
frequency bandwidth of 450 MHz or more and uses 0.001 W or less for the antenna input power
(hereinafter referred to as “antenna power”) with use of frequency from 3.4GHz to 4.8 GHz or
from 7.25GHz to 10.25GHz for indoor use), and also the radio equipment of the radio stations of
“UWB (Ultra-Wideband) Radio System” for the communication application.
1.2 Scope of the Standard
The radio station of a UWB Radio System consists of radio equipment and data terminal
equipment (including one connected to telecommunication circuit facilities), etc. as shown in
the Figure 1-1.
The standard defines the said radio equipment.
Figure 1-1 Configuration of radio station of UWB Radio System
1.3 Reference regulations
In the standard, “RERL” refers to Regulations for Enforcement of Radio Law, “ORE” refers to
Ordinance Regulating Radio Equipment, “OTRCC” refers to Ordinance Concerning Technical
Regulations Conformity Certification etc. of Specified Radio Equipment, “OTF” refers to
Ordinance Concerning Terminal Facilities etc., “RTCCA” refers to Rules Concerning the
Data terminal e
q
ui
p
ment
,
etc.
Controller
•Interference prevention function
•Interference mitigation function
•Controls of radio transmission
Transmitter
Receiver
Radio equipment
Scope of the standard
ARIB STD-T91
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Technical Conditions Compliance Approval etc. for Terminal Equipment, “NT” refers to a
Notification of the Ministry of Posts and Telecommunications if issued in 2000 or earlier, and a
Notification of the Ministry of Internal Affairs and Communications (MIC) if issued in 2001 or
later.
ARIB STD-T91
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Chapter 2 Standard System
2.1 System Overview
UWB Radio System is a radio system that spreads electric power over a very wide bandwidth.
On the other hand, the standard does not specify a protocol layer.
2.2 System Configurations
In the radio equipment of the radio station of a UWB Radio System, a radio equipment not
connected to the AC mains power supply shall be permitted to emit radio waves only after it
receives a signal from another radio equipment connected to the AC mains power supply. (ORE,
Article 49.27)
Examples of a compliant system configuration are shown in Figure 2-1, 2-2 and 2-3.
(1) The case of radio equipment connected to the AC mains power supply which transmits
signals to another radio equipment:
If a radio equipment is connected to the AC mains power supply, it can start
transmission at any time.
Figure 2-1 Example of standard system configuration (1)
A1 A2
B
s
s
Notes:A1, A2: Radio equipment connected to the AC mains power supply.
B : Radio equipment not using AC mains power supply
s :SignaltransmittedbyA1.
ARIB STD-T91
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(2) The case of radio equipment not connected to the AC mains power supply which transmits
signals to another radio equipment connected to the AC mains power supply:
If a radio equipment is not connected to the AC mains power supply, it can emit radio
waves only after it detects a signal from another radio equipment which is connected to
the AC mains power supply.
Figure 2-2 Example of standard system configuration (2)
r
s
s
B A1
Notes:A1, A2: Radio equipment connected to the AC mains power supply
B : Radio equipment not connected to the AC mains power supply
r :SignalreceivedbyB.
s :SignaltransmittedbyB.
A2
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