IrUT V1

Infrared Data Association

Infrared Universal Translator (IrUT)

For High-Speed Radio

NEC

NTT DoCoMo

Matsushita/Panasonic

Sharp

Version 1.0

October 26, 1999

Infrared Universal Translator For High-Speed Radio

Version 1.0 Draft

Authors:

Yusuke Kushida, [e-mail] (NTT DoCoMo)

Kazuya Anzawa, [e-mail] (NTT DoCoMo)

Katsunori Hamada, [e-mail] (NTT DoCoMo)

Contributors:

Noriyuki Ogawa, [e-mail] (Matsushita/Panasonic)

Kuniaki Sugimoto, [e-mail] (Matsushita/Panasonic)

Shuichiro Ono, [e-mail] (SHARP)

Hiroshi Ono, [e-mail] (NEC)

Special thanks to

Robert K.Lockhart, [e-mail] (Motorola)

Editor:

Yusuke Kushida

Document Status:

∙Infrared Universal Translator (IrUT) for High-speed Radio version 1.0 (October25, 1999)

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INFRARED DATA ASSOCIATION (IrDA) - NOTICE TO THE TRADE -SUMMARY:

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rights arising out of the use, attempted use, reproduction, distribution or public display of IrDA publications. IrDA assumes no obligation or responsibility whatsoever to advise its members or non-members who receive or are about to receive IrDA publications of the chance of infringement or violation of any right of an IrDA member or third party arising out of the use, attempted use, reproduction, distribution or display of IrDA publications.

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Membership in IrDA or use of IrDA publications does NOT constitute IrDA compliance. It is the sole responsibility of each manufacturer, whether or not an IrDA member, to obtain product compliance in accordance with IrDA rules for compliance. All rights, prohibitions of right, agreements and terms and conditions regarding use of IrDA publications and IrDA rules for compliance of products are governed by the laws and regulations of the United States. However, each manufacturer is solely responsible for compliance with the import/export laws of the countries in which they conduct business. The information contained in this document is provided as is and is subject to change without notice.

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TABLE OF CONTENTS

1.	Introduction		.........................................................................................................................		1
	1.1	Scope............................................................................................................................			1
	1.2	Framework....................................................................................................................			1
	1.3	References ...................................................................................................................			3
	1.4	Acronyms......................................................................................................................			3
	1.5	Byte Ordering ...............................................................................................................			3
2. Infrared Universal Translator (IrUT) ..................................................................................					4
	2.1	Data transmission overview..........................................................................................			4
	2.2	Basic requirements.......................................................................................................			5
	2.3	Frame Format...............................................................................................................			5
	2.3.1 Frame Format of UT-Units Field ..............................................................................				5
	2.3.2 UT-Unit for Real-Time Data Transmission...............................................................				7
	2.3.2.1		UT-Unit for Real-Time Data Control ................................................................		7
	2.3.2.2		UT-Unit for Real-Time Data Transmission...................................................................		9
	2.3.3 UT-Units for Non-real-time Data Transmission......................................................				10
	2.3.3.1		UT-Unit for Non-real-time Data Control .....................................................................		10
	2.3.3.2		UT-Data Unit for Non-real-time Data Transmission ...................................................		10
	2.4	IrUT service primitives ................................................................................................			11
	2.4.1	Connect Service .....................................................................................................			11
	2.4.2	Disconnect Service ................................................................................................			12
	2.4.3	Data Service...........................................................................................................			12
	2.4.4	Real-time Data Service ..........................................................................................			12
	2.4.5	Status Service ........................................................................................................			13
	2.4.6	Local Flow Service .................................................................................................			13
	2.5	Internal Organization of the IrUT layer .......................................................................			14
	2.6	State Charts................................................................................................................			15
	2.6.1	The State Chart of UT Link Management Section ................................................			16
	2.6.1.1		State Transition Diagram ...........................................................................................		16
	2.6.1.2		State Transition Tables..............................................................................................		17
		2.6.1.2.1		IDLE State ..........................................................................................................	17
		2.6.1.2.2		SETUP State......................................................................................................	18
		2.6.1.2.3		CONN State .......................................................................................................	19
		2.6.1.2.4		NRDTR State .....................................................................................................	20

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		2.6.1.2.5		RDTR State........................................................................................................	21
		2.6.1.2.6		DISC State .........................................................................................................	22
		2.6.1.2.7		State Definitions ................................................................................................	23
		2.6.1.2.8		State Variables ..................................................................................................	23
		2.6.1.2.9		Event Descriptions ............................................................................................	24
		2.6.1.2.10		Action Descriptions .........................................................................................	24
	2.6.2 The State Chart of UT Frame Management Section (UTF)...................................				25
	2.6.2.1		State Transmission Diagram......................................................................................		25
	2.6.2.2		State Transmission Tables ........................................................................................		26
		2.6.2.2.1		IDLE State ..........................................................................................................	26
		2.6.2.2.2		SETUP State......................................................................................................	27
		2.6.2.2.3		CONN State .......................................................................................................	27
		2.6.2.2.4		ROLE_EX State.................................................................................................	28
		2.6.2.2.5		ROLE_EX WAIT State......................................................................................	28
		2.6.2.2.6		RECONN State..................................................................................................	29
		2.6.2.2.7		RECONN_WAIT State ....................................................................................	30
		2.6.2.2.8		DTR_PEND State .............................................................................................	31
		2.6.2.2.9		RDTR State........................................................................................................	32
		2.6.2.2.10		NRDTR State...................................................................................................	35
		2.6.2.2.11		DISC State ......................................................................................................	38
		2.6.2.2.12		State Definitions ..............................................................................................	38
		2.6.2.2.13		Event Descriptions ..........................................................................................	39
		2.6.2.2.14		State Variables ................................................................................................	40
		2.6.2.2.15		Action Descriptions .........................................................................................	40
	2.7	Connection Establishment Procedure ........................................................................			42
	2.7.1 The first IrUT link establishment procedure (see Figure 2.7-1) .............................				42
	2.7.2 Procedure to add new non-real-time data link (See figure 2.7-2) ..........................				44
	2.7.3	Negotiation Parameters .........................................................................................			46
	2.7.3.1		Data transmission cycle .............................................................................................		46
	2.7.3.2		Maximum data length ................................................................................................		46
3	ISDN	....................................................................................................................................			47
	3.1	Data Transmission Overview......................................................................................			47
	3.2	Frame Format.............................................................................................................			47
	3.2.1	BRI Frame Structure ..............................................................................................			47
	3.2.2	PRI frame structure ................................................................................................			48

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	3.2.3	Frame Descriptions ................................................................................................		48
	3.2.3.1 Common flag field 1............................................................................................			49
	3.2.3.2 Common flag field 2............................................................................................			50
	3.2.3.3		Bit stream ordering..............................................................................................	50
	3.2.3.4 Contents of UT-Parameters for ISDN ...........................................................			51
	3.3	Basic requirements.....................................................................................................		52
	3.4	Hardware requirement................................................................................................		52
	3.4.1	Bit synchronization .................................................................................................		52
4.	IrOBEX ..................................................................................................................................			53
	4.1	Data transmission overview........................................................................................		53
	4.2	Frame format example ...............................................................................................		53
5.	IrCOMM...............................................................................................................................			54
	5.1	Data transmission overview........................................................................................		54
	5.2	Frame format example ...............................................................................................		54
6.	Service sequence example .................................................................................................			55
	6.1	Primary / Secondary exchange ..................................................................................		55
7. IAS ..........................................................................................................................................				56
	7.1	IAS Entries for Class IrDA:IrUT ..................................................................................		56
	7.1.1	IrDA:TinyTP:LsapSel..............................................................................................		56
	7.1.2	Parameters.............................................................................................................		56
	7.2	IAS Entries for Class IrDA:IrUT:IrOBEX.....................................................................		59
	7.2.1	IrDA:TinyTP:LsapSel..............................................................................................		59
	7.2.2	Other Attributes ......................................................................................................		59
	7.3	IAS Entries for Class IrDA:IrUT:IrCOMM ...................................................................		59
	7.3.1	IrDA:TinyTP:LsapSel..............................................................................................		59
	7.3.2	Other Attributes ......................................................................................................		59
	7.4	Service Hint Bit ...........................................................................................................		60
Appendix A			Overview of procedure for errors...................................................................	61
Appendix B The Detailed Sequence of IrUT Connection ..................................................				62
	B-1	The First Link Connection Establishment Procedure. ................................................		62
	B-2	Data Transmission Procedure ....................................................................................		63

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B-3	Communication Error Occurs .....................................................................................	64
B-4	The Second Link Connection Establishment Procedure............................................	65
B-5	The Last Link Disconnect Procedure. ........................................................................	66

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1.Introduction

1.1Scope

This document describes the real-time data transmission function for phase 2 IrMC specification. This specification set new protocol layer named IrUT, which offers a data translation function between an infrared interface and other interfaces. With IrUT, an infrared interface can provide real-time data services such as video conferencing.

1.2Framework

The IrMC (the phase 1 IrMC specifications) defines the rules for object exchange, voice communication, and call control utilization through an infrared interface. In this specification, the targeted data transmission speed is 4 Mbps (or higher).

			Handset
PC with IrDA device	PDA	Pager	(Car Cradle)

Voice+C.C.

PC	Object
Ethernet	Exchange
IrDA	Data
ADAPTER	Transmission
I.430
I.431	Unrestricted Digital
IrDA	(64 * n kbps)
ADAPTER
Video Conference
Phone
(ISDN Terminal)

Figure 1-1 Possible services provided in IrMC phase 2 specification

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Figure 1-1 shows the infrared data transmission services that will be provided by phase 2 IrMC specification. As the figure shows, phase2 IrMC can handle real-time applications such as TV conference through the ISDN network. Of course, applications supported by the phase 1 IrMC, such as IrOBEX, IrCOMM, etc., should be supported in this phase.

In order to ensure real-time data transmission, devices should continue to send / receive infrared data frame at the beginning of every fixed cycle. During a cycle, no data from other applications can be transmitted because doing so would change the period of the cycle. However, this restriction is not practical as capability to transmit non-real-time data, such as vCard, during the real-time data transmission. To cope with such a situation, one can define a function that combines the data of every application into a single frame.

Figure 1-2 shows the practical implementation of the IrUT layer; the IrUT layer fits on top of the IrDA protocol stack. As shown by the solid line, not only real-time applications, but also the data issued by the phase 1 IrMC applications (IrOBEX and IrCOMM), can be wrapped together into the same IrUT frame. Combines these applications, in this way, ensures compatibility with phase 1 IrMC devices. Of course, such data can be transmitted directly to the TinyTP layer, without going through IrUT layer (This case is shown by the broken line.)

TV	Data	.......	Web	vCard/
Conference +Control			Access	vCalender
ISDN	W-CDMA .......		IrCOMM	OBEX

IrUT

Tiny TP					IAS

IrLMP

IrLAP

IrPHY

The case of multi-application transmission through IrUT layer.

The case of existing IrDA application transmission without IrUT layer.

Figure 1-2

Protocol stack

2