Appendix A-_Here_I_am_Device_Design_Specification_20110505.pdf

Engineering Release Notice (ERN)

Location Change Description A=Added W=Was U=Deleted

Documentation Release Status Version 2.2

Date 20110505

Modification Count 8

Document Title “Here I Am” Device Specification

Document Type System Requirement Description

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SYSTEM REQUIREMENT DESCRIPTION

Approved by (dept, name, phone)

Issued by (dept, name, phone) US DOT, Walton Fehr, (202) 366-0278 walton.fehr@dot.gov

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Table of Contents

1 INTRODUCTION

1.1 WHAT IS THE PURPOSE OF THIS DOCUMENT?

1.2 WHO SHOULD READ THIS DOCUMENT?

1.3 HOW IS THIS DOCUMENT ORGANIZED?

1.4 HOW DO YOU RECEIVE MORE INFORMATION?

1.5 REVISION HISTORY

1.6 REQUISITE DOCUMENTS

2 TERMINOLOGY

2.1 DEFINITIONS

2.2 CONCEPTS

2.2.1 Identification of Requirements

2.3 ABBREVIATIONS

3 SYSTEM DESCRIPTION

3.1 FUNCTIONAL DESCRIPTION

3.2 SYSTEM DESIGN

3.3 SYSTEM LAYOUT

4 SYSTEM REQUIREMENTS

4.1 MECHANICAL REQUIREMENTS

4.1.1 Device Installation

4.1.2 Device Size

4.2 PERFORMANCE REQUIREMENTS

4.3 ENVIRONMENTAL REQUIREMENTS

4.3.1 Operating Voltage

4.3.2 Operating Current

4.3.3 Device Shutdown

4.3.4 Temperature

4.3.5 Shock and Vibration

4.3.6 Electrostatic Discharge

5 FUNCTIONAL REQUIREMENTS

5.1 INTERFACE REQUIREMENTS

5.2 OPERATIONS, MONITORING AND CONTROL

5.2.1 Operational States

5.2.2 Operational Configuration

5.2.3 System Message Log

5.2.4 Device Positioning and Timing

5.2.5 Device Security

5.3 DSRC RADIO SUBSYSTEM

5.3.1 FCC Compliance

5.3.2 Radio Count

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5.3.3 IEEE 802.11

5.3.4 IEEE 802.11p

5.3.5 IEEE 1609.2

5.3.6 IEEE 1609.3

5.3.7 IEEE 1609.4

5.3.8 Radio Performance

5.3.9 Congestion Control

5.4 MESSAGE PROCESSING

5.4.1 Basic Safety Messages

6 TEST REQUIREMENTS

6.1 RADIO TRANSMISSION

6.2 VEHICLE LOCATION

APPENDIX A: VEHICLE POWER CONNECTOR

APPENDIX B: CONFIGURATION FILE FORMAT

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1 INTRODUCTION

1.1 What is the purpose of this document?

This document will set the requirements for an automotive grade electronic module capable of sending a “Here I Am” Message over a Dedicated Short Range Communication (DSRC) wireless communications link. The “Here I Am” Message, as defined in this document, is a form of the SAE J2735-200911 defined “Basic Safety Message”

1.2 Who should read this document?

Suppliers interested in building devices based on the requirements provided in this document.

1.3 How is this document organized?

The Structure of this document is as follows:

Section 1 – Introduction: Document’s scope, revision history and requisite specifications.

Section 2 – Terminology: describes the definitions, concepts, and abbreviations used throughout the document.

Section 3 – System Description: Describes the system layout and the allocation of responsibilities and communication for the system components.

Section 4 – System Requirements: Describes the System level requirements.

Section 5 – Functional Requirements: Describes the subsystem and\or component level requirements.

Section 6 – Test Requirements: Describes the system testing requirements.

1.4 How do you receive more information?

Additional information is available in the documents listed in section 1.6. Questions are answered by the person responsible for this document (see section 1.5).

1.5 Revision History

Rev. Vers. Date Description Approved by Responsible 001 001 07/01/10 First Issue Walton Fehr 002 001.1 07/01/10 Word “suppler” changed to “supplier” in numerous places Walton Fehr

003 001.3 11/12/10 Changed the “HIM” acronym to “HIA” to better represent the phrase “Here I Am”

Updated the “Requisite Documents” Section based on updates to cited documents\standards

Walton Fehr

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Updated numerous Requirements based on Supplier feedback and questions

Added Requirements 98-101 based on Supplier feedback and questions (Note: These requirements were added to the appropriate Sections of the Document, NOT at the end of the Document)

Deprecated Requirements 55, 78, and 79 as these Requirements are no longer relevant

004 001.4 12/27/10 Comments inserted by WLF Walton Fehr 005 001.5 12/28/10 Updated SRD template and responded to WLF comments Maureen

Marshall 006 001.6 12/29/10 Status change from Preliminary to Initial Sample

Delivery, Walton Fehr

007 002.0 4/22/11 Restructured and revised to include initial comments from device builders and to reflect corollary work on the ASD Requirements Specification.

008 002.1 5/3/2011 Incorporated feedback from vendor feedback sessions. Added requirements for system timing (both source and standard). Added clarification to device power requirements. Revised configuration file format to CSV text file.

009 002.2 5/5/2011 Included a list of mandatory requirements that will be considered optional for a lot of material being acquired for Test Bed use ONLY. These requirements will be mandatory in future devices.

1.6 Requisite Documents

This section contains reference documents, and their appropriate versions, required to meet the requirements described in this document. The Standard\Documents listed in the “Reference” portion of the requirements relate to the Standards\Documents listed here:

• SAE J2735-200911: Dedicated Short Range Communication (DSRC) Message Set Dictionary

• Model Deployment Safety Device DSRC BSM Communication Minimum Performance Requirements-

VSC3 Internal Document, Revision 2.0, 03/31/2011 (available upon request)

• SAE J1211: Handbook for Robustness Validation of Automotive Electrical/Electronic Modules

• SAE J551: Vehicle Electromagnetic Immunity--Electrostatic Discharge (ESD)

• IEEE 1 P1609.2™/D7.3 Draft Standard for Wireless Access in Vehicular Environments – Security

Services for Applications and Management Messages, March 2011

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• IEEE P1609.3™/D9 Draft Standard for Wireless Access in Vehicular Environments (WAVE) - Networking Services, August 2010

• IEEE P1609.4™/D9 Draft Standard for Wireless Access in Vehicular Environments (WAVE) - Multi-channel Operation, August 2010

• IEEE P802.11p-Standard for Information Technology-Telecommunications and Information Exchange between systems-Local and Metropolitan Networks-Specific Requirements-Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Wireless Access in Vehicle Environments, Amendment 6, Published in 2010

• IEEE 802.11-2007

• Federal Communications Commission (FCC) 47 Code of Federal Regulations (CFR) Parts 0, 1, 2, 90, and

95 amendments for Dedicated Short Range Communications Services and Mobile Service for Dedicated Short Range Communications of Intelligent Transportation Service in the 5.850-5.925 GHz Band (5.9 GHz Band).

• CAMP Task VSC3 Congestion Control Document

• Vehicle Power Connector Description (see Appendix A)

2 TERMINOLOGY

2.1 Definitions

Definition Description “Here I Am” Message

This is the SAE 2735 Basic Safety Message as defined in this document

Alternating mode The device switches between the Control Channel and the Service Channel

Authorized Entity An approved entity (person or software application) with security credentials that authorize attempted operations or activities.

Automotive Grade

End-application solutions, devices, and development tools supporting the automotive industry

Certificate An electronic document which uses a digital signature, typically from a Certificate Authority to bind a public key with an identity of the person or organization holding the certificate.

Continuous mode The device does not switch radio channels. It only uses 1 channel

Digital Signature A digital signature (created using a mathematical algorithm) gives a recipient of an electronic message assurance that the message was created by the sender, and that it is unaltered.

Latency The latency of a J2735 BSM data element/frame is defined as the maximum age of the data in the outgoing BSM

Meaningful Value A Valid Value for a data element within a Basic Safety Message which is not Unavailable” value.

Non-DSRC Communications protocol outside of the 5.9GHz DSRC band

Public Key Part of a mathematically related public/private key pair, and used to digitally sign and / or encrypt electronic messages or documents.

Sign Digitally signing a electronic message or document using

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Valid Value A value for a data element within a Basic Safety Message that has the correct data type and is within the limits of the value as defined in SAE J2735. A value of “Unavailable” is defined as valid.

WAVE Short Message Protocol

Networking protocol specifically designed for V2X communications.

Wi-Fi Generic term for communications technologies including wireless local area network (WLAN) which are based on the IEEE 802.11 standards.

2.2 Concepts

2.2.1 Identification of Requirements

This is the nomenclature used for requirements identification.

[Document type]-[system]-[issue number]-Req[requirement section][requirement number]v[requirement version number]

The following table explains how the requirements nomenclature is constructed and numbered:

Field document type

Content Description This is a constant text string set to “SRD”, which is an acronym for “System Requirements Description”

System This is a constant text string set to “USDOTHIA”.

issue number This is set to the current issue number of this Systems Requirements Description.

requirement section This is set to the functional category of the requirement and will be one of the following:

BSM Basic Safety Messaging COM Communications DRS DSRC Radio Subsystem INT Interface Requirements MPS Message Processing System OMC Operations, Management & Control POS Positioning SEC Security SML System Message Log SYS System TST Testing

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Field requirement number

Content Description This is a numeric identifier for each requirement ranging from 001 up to 999 and each filed value will be unique within a defined requirement section (see above).

requirement version number This is set to the current version number of the individual requirement.

The following example illustrated how the requirements within this SRD are numbered:

SRD-USDOTHIA-002-Req 004v001 This requirement was introduced in the first issue of the SRD for system USDOTHIM. It is the forth requirement in the document and it is the first version of the requirement.

SRD-USDOTHIA-003-Req 001v001 This requirement was updated in the third issue of the SRD for system USDOTHIM. It is the first requirement in the document and it has been updated to a second version.

SRD-USDOTHIA-003-Req 009v001 This requirement was introduced in the third version of the SRD for system USDOTHIM. It is the ninth requirement in the document and it is the first version of the requirement.

2.3 Abbreviations

Abbr. Description Definition AC Access Category See IEEE 802.11-2007 ACL Access Communications Link AIFS Arbitration Interframe Space See IEEE 802.11-2007

ANS.1 Abstract Syntax Notation One Standard and flexible notation that describes structures for representing, encoding and decoding data.

BSM Basic Safety Message C Celsius Unit of temperature CA Certificate Authority CAMP Crash Avoidance Metrics Partnership CCH Control Channel CFR Code of Federal Regulations CONUS Continental United States COTS Commercial Off the Shelf CRL Certificate Revocation List CWmin Contention Window Minimum See EEE 802.11-2007 dB Decibel

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Abbr. Description Definition DC Direct Current DSRC Dedicated Short Range Communications EDCA Enhanced Distributed Channel Access EEBL Electronic Emergency Brake Light EMI Electromagnetic Interference ESD Electrostatic Discharge FCC Federal Communications Commission

GB Gigabytes Units of storage consisting of approximately 109

GHz

8-bit characters

Gigahertz GPS Global Positioning System HMI Human Machine Interface IEEE Institute of Electrical and Electronic Engineers IP Internet Protocol IP Internet Protocol km Kilometer LSI Local Systems Interface mA Milliamp Unit of electrical current MAC Media Access Control MB Megabyte Units of storage, consisting of approximately 106

Mbps

8-bit characters

Megabytes per second MHz Megahertz MIB Management Information Base MPDUs MAC Protocol Units Ms Millisecond MTBF Mean Time Between Failure OFDM Orthogonal Frequency-Division Multiplexing OSI Open Systems Interconnection OTA Over-the-Air

PHY Physical layer Refers to a specific layer in the Open Systems Interconnection (OSI) reference model

PSID Provider Service Identifier QOS Quality of Service RF Radio Frequency RSU Roadside Unit SAE Society of Automotive Engineers SCH Service Channel SD Secure Digital SRD System Requirements Description Describes requirements for a given system SVC Service Channel

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Abbr. Description Definition TXOP Transmission Opportunity See IEEE 802.11-2007 USB Universal Serial Bus UTC Universal Time, Coordinated V2I Vehicle-to-Infrastructure V2V Vehicle-to-Vehicle V2X Vehicle-to-(Infrastructure and/or Vehicle) VSC3 Vehicle Safety Communications 3 (Consortium) WAAS Wide Area Augmentation System WAVE Wireless Access in Vehicular Environments WiMAX WSM WAVE Short Message WSMP WAVE Short Message Protocol WSMP-S WSMP safety supplement

3 SYSTEM DESCRIPTION

3.1 Functional Description

The device discussed in this document is an Automotive grade electronic module capable of sending a “Here I Am” message based on the Basic Safety Message defined in SAE J2735-200911. The message is to be transmitted over a DSRC Link as defined in the IEEE 1609 suite and IEEE P802.11p D11.0, March 2010 standards.

3.2 System Design

The automotive grade electronic module is intended for installation in various vehicles types ranging from light duty vehicles, whose weight is less than 10,000 pounds; to heavy duty class 8 trucks. This device will be installed in a vehicle without requiring connection to proprietary in-vehicle systems. It must be capable of sending and receiving the Basic Safety Message as defined in SAE J2735-200911, over a DSRC 5.9 GHz wireless communications link, as defined in the IEEE 1609 suite and IEEE 802.11pD11.0, March 2010 standards. The device should be capable of data storage, message processing, transmitting and receiving, as defined throughout this specification.

The HIA Device will have a set of operational states as illustrated in the following diagram.

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Figure 1.0 – Here I Am” Device State Diagram

NP

R

H

S

“Halt” Cmd

“Run” Cmd

QIgn.

“Off”

Ign.

“On”

Initial Power On

Loss of Power

Loss of Power

Loss of Power

Return of Power

H

NP

Q R S

Key -- Halt -- No Power -- Quiet -- Run -- Start

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3.3 System Layout

The diagram below is for reference only. Only shaded blocks are discussed in this document.

Figure 1.0 Here I Am Device Diagram

BSM

Construction

WAVE Msg Send

WAVE Msg Recieve

Logging Subsystem

Security Subsystem

Local Application Subsystem

Operations, Management &

Control

Configuration Services

Operating Platform

Current & Default Config. Files

System LogsSecurity Credentials

HIA Device

Local Systems Interface

Vehicle Interface

DSRC

Radio

Playlist

• Power

• Ground

• Ignition State

Local System Communications Mobile (DSRC) Communications Features System Functions Platform Functions (out of scope)

Key

User Interface

Comms Mgmt

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4 SYSTEM REQUIREMENTS

Note: the following mandatory requirements that will be considered optional for the Test Bed delivery.

SRD-USDOTHIA-002-SYS001v001 Vehicle Interior Mounted Device Form Factor Existing package size may be accepted.

SRD-USDOTHIA-002-ReqINT001v001 Vehicle Interface All power connectors will be provided.

SRD-USDOTHIA-002-ReqOMC001v001 Configuration Storage The exiting configuration file structure can be used if all configuration items are included somewhere.

SRD-USDOTHIA-002-ReqDRS001v001 FCC Regulation 47 CFR Compliance for DSRC Compliance testing is not available.

SRD-USDOTHIA-002-ReqDRS002v001 IEEE 1609.3 WSMP Congestion Controlled Transmission Rate Note that the only configured congestion control algorithm will be NO algorithm.

SRD-USDOTHIA-002-ReqDRS003v001 Receive Range Needed only when active configuration control algorithms are in use.

SRD-USDOTHIA-002-ReqDRS004v001 Congestion Control (Under Development) Not ready yet.

SRD-USDOTHIA-002-ReqDRS005v001 Congestion Control Algorithm Loading (Under Development) Not ready yet.

4.1 Mechanical Requirements

The “Here I Am” device shall meet all of the indicated requirements listed within this section.

4.1.1 Device Installation

SRD-USDOTHIA-002-SYS002v001 Device Installation

Description: The Installation and Removal of the “Here I Am” Device shall not damage the vehicle external body panels or interior trim, instrument panel, or any other Original Equipment Manufacturer provide or installed portion of the vehicle.

Reference: None

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Purpose: Enables vehicle to be used during test activities without permanent modification or change; other than the expected “wear and tear” resulting from normal vehicle operations.

Disposition: Mandatory

Performance Criteria: Pass\Fail

Verification Method: Device Test

SRD-USDOTHIA-002-SYS003v001 Device Mounting

Description: The “Here I Am” device shall be mountable as an “aftermarket” device complying with state and local regulations and/or guidance related to “aftermarket” device mountings.

Reference: None

Purpose: Enables vehicle independent mounting in the vehicle

Disposition: Mandatory

Performance Criteria: Pass\Fail

Method: Analysis

4.1.2 Device Size

SRD-USDOTHIA-002-SYS004v001 Windshield Mounted Device Form Factor

Description: The mounted “Here I Am” device shall be limited in form factor such that, if mounted on either the windshield or the dashboard, the “Here I Am” device does not obstruct the driver’s field of view more than a windshield mounted transponder toll tag or a dashboard mounted commercial-off-the-shelf (COTS) navigation device.

Purpose: Ensures unobstructed driver’s field of view.

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Criteria: Pass\Fail

Method: Inspection

SRD-USDOTHIA-002-SYS005v001 Vehicle Interior Mounted Device Form Factor

Description: The mounted “Here I Am” device shall be limited in form factor such that, if it is to be mounted in the vehicle interior, it shall have physical dimensions of 20cm by 12cm by 3cm.

Reference: None

Purpose: Allows for more installation locations with simpler attachment mechanisms.

Disposition: Mandatory

Performance Criteria: Pass\Fail

4.2 Performance Requirements

SRD-USDOTHIA-002-SYS006v001 Device Transmitter Failure

Description: If the “Here I Am” device stops transmitting, for any reason, it shall signal ‘device needs servicing’, the manner of signaling being specified in the “Here I Am” device’s operating manual.

Purpose: Inform the vehicle operator that the device is malfunctioning

Disposition: Mandatory

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Method: Test

SRD-USDOTHIA-002-SYS007v001 Mean Time Between Failure (MTBF)

Description: The “Here I Am” device shall have a MTBF of 10,000 hours or greater.

Reference: None

Purpose: Maximizes vehicle\device availability time during the Test.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-SYS008v001 Vehicle Types

Description: The “Here I Am” Device shall operate consistently across the following Vehicle Types:

• Light Duty Passenger Vehicles (i.e. 2010 Toyota Corolla LE 4-door sedan)

• Light Duty (1/2 Ton) Trucks (i.e. 2010 Ford F-150 XL with regular cab and Styleside 8ft box)

• Class 8 Tractor with Trailer (i.e. 2010Kenworth T660 tractor with extended day cab and a

53’ Dorsey dry van.)

Note: Test conductor will make final vehicle choices with concurrence of the “Here I Am” device makers

Purpose: Provides for a large, diverse, field of Test Vehicles

Disposition: Mandatory

Performance Criteria: Pass\Fail

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4.3 Environmental Requirements

The device and all equipment shall be “weather proof” with the capability to operate without failure under all weather conditions experienced in the United States and its territories. The device must also meet all the defined requirements in this section.

4.3.1 Operating Voltage

SRD-USDOTHIA-002-SYS009v001 Device Power Source

Description: A “Here I am” device, powered from a vehicle power source, shall operate at a range of +9 volts to +16 volts direct current (DC) nominal.

Reference: None

Purpose: Enables the device to be powered from a vehicle power source

Disposition: Mandatory, if the device is powered from a vehicle power source; otherwise, Optional

Performance Criteria: Pass\Fail

4.3.2 Operating Current

SRD-USDOTHIA-002-SYS010v001 Maximum Operating Current

Description: When the “Here I Am” device is powered from a vehicle power source, the “Here I Am” device shall operate at a maximum of 1 amp in the Halt, Run, and Start modes.

Note: The vehicle power source can be either a steady “hot at all time” battery feed, a switched battery feed, or a combination of the two. It is up to the device vendor to determine how their device will be powered.

Purpose: Prevents device from overloading existing vehicle electrical systems.

Disposition: Mandatory, if the device is powered from a vehicle power source; otherwise, Optional

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SRD-USDOTHIA-002-SYS011v001 Maximum Standby Current

Description: When the “Here I Am” device is powered from a vehicle power source, the “Here I Am” device shall operate in Quiet (Ignition off) mode at a maximum of 1mA.

Note: The vehicle power source can be either a steady “hot at all time” battery feed, a switched battery feed, or a combination of the two. It is up to the device vendor to determine how their device will be powered.

Purpose: Prevents device from draining vehicle battery during prolonged vehicle standby durations

Disposition: Mandatory, if the device is powered from a vehicle power source; otherwise, Optional

Performance Criteria: Pass\Fail

4.3.3 Device Shutdown

SRD-USDOTHIA-002-SYS012v001 Device Shutdown

Description: The “Here I Am” device shall enter Quiet Mode no more than 15 minutes after the “Switched

Battery Feed” is turned to the “off” State.

Reference: None

Purpose: Enables device to continue transmitting for a defined, short time when\if vehicle is disabled and then, transition into a quiescent operating mode.

Disposition: Optional

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4.3.4 Temperature

SRD-USDOTHIA-002-SYS013v001 Temperature Operating Range

Description: The “Here I Am” device shall operate at a temperature range of -40°C to +85°C.

Purpose: Ensures device will operate in extreme temperature conditions

Disposition: Mandatory

Performance Criteria: Pass\Fail

4.3.5 Shock and Vibration

SRD-USDOTHIA-002-SYS014v001 Shock and Vibration in a Moving Vehicle

Description: The “Here I Am” device shall withstand typical shock and vibration from usage on moving vehicles.

Reference: SAE J1211

Purpose: Ensures device can operate in a moving vehicle

Disposition: Mandatory

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SRD-USDOTHIA-002-SYS015v001 Shock and Vibration Due to Shipping

Description: The “Here I Am” device shall withstand typical shock and vibration from normal shipping and handling.

Reference: SAE J1211

Purpose: Ensures device can survive shipping from the manufacturer to the designated shipping location.

Disposition: Mandatory

Performance Criteria: Pass\Fail

4.3.6 Electrostatic Discharge

SRD-USDOTHIA-002-SYS016v001 Device Electrostatic Discharge

Description: The “Here I Am” device shall be protected from typical electrostatic discharges.

Reference: SAE J551

Purpose: Ensures device can withstand ESD

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-SYS017v001 Removable Storage Electrostatic Discharge

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Description: Any removable storage equipped in a “Here I Am” device shall be protected from typical electrostatic discharges.

Reference: SAE J551

Purpose: Ensures removable storage can withstand ESD

Disposition: Mandatory, if device equipped with removable storage; otherwise, Optional

Performance Criteria: Pass\Fail

5 FUNCTIONAL REQUIREMENTS

5.1 Interface Requirements

The “Here I Am” device shall meet all of the indicated requirements listed within this section.

SRD-USDOTHIA-002-ReqINT002v001 Vehicle Interface

Description: The “Here I Am” device shall connect to the Vehicle’s power source using a Delphi Micro HVT connector (see Appendix A, Figures 3.0, and 3.1).

Reference: Appendix A and SAE J2922

Purpose: Enables device to be powered from the vehicles power source including a Hot-at-all-Time battery feed, a switched battery feed, and a Ground. Note: The vehicle-side of the connector pair will be provided; the “Here I Am” device manufacturer need only provide the device-side of the connector pair.

Criteria: Pass\Fail

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SRD-USDOTHIA-002-ReqINT003v001 Vehicle Interface – Vehicle Data Bus

Description: The “Here I Am” device shall populate the Basic Safety Message with data from a vehicle data bus using the Vehicle Interface.

Reference: None

Purpose: Enables device to populate the Basic Safety Message with “live” vehicle data

Disposition: Optional

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqINT004v001 Local Systems Interface (LSI)

Description: The “Here I Am” device shall provide at least one of the following (non-DSRC) communications interfaces/mechanisms.

• USB Port Category A

• Ethernet Port

• Wi-Fi Port

• WiMAX (non-mobile) Port

• Removable storage (e.g. SD Card) Category B

Reference: None

Purpose: Supports non-DSRC access for configuration and maintenance; and exchange of management data to and from the device

Disposition: Mandatory

Performance

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SRD-USDOTHIA-002-ReqINT005v001 Local Systems Interface – Protocol Support

Description: The “Here I Am” device shall implement one of the following protocol suites for any Category A

LSI interface type as listed in SRD-USDOTHIA-002-ReqINT003v001.

• Internet Protocol v4 (IPv4)

• Internet Protocol v4 (IPv6)

Reference: None

Purpose: Supports local or remote access for configuration and maintenance over non-DSRC communications interface.

Disposition: Optional

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqINT006v001 DSRC Radio Interface

Description: The “Here I Am” device shall implement one (1) 5.9GHz DSRC radio as called out in IEEE

802.11p and IEEE 1609.

Reference: None

Purpose: Support for V2V and V2I communications.

Disposition: Mandatory

Performance Criteria: Pass\Fail

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5.2 Operations, Monitoring and Control

The “Here I Am” device shall meet all of the indicated requirements listed within this section.

5.2.1 Operational States

For an overview of the following requirements, please refer to the operational state diagram (Figure 1.0) in Section 3.2

SRD-USDOTHIA-002-ReqOMC002v001 State Transition - Start to Run

Description: The “Here I Am” device shall perform a state transition from the initial Start State to Run State.

Purpose: State transition handling

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC003v001 State Transition - Run to Quiet

Description: The “Here I Am” device shall perform a state transition from Run State to Quiet State when the ignition state determined from the switched battery feed or a bus message transitions to “Off”.

Reference: None

Purpose: State transition handling

Disposition: Mandatory

Performance Criteria: Pass\Fail

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SRD-USDOTHIA-002-ReqOMC004v001 State Transition - Run to Halt

Description: The “Here I Am” device shall perform a state transition from Run State to Halt State in response to an Authorized Entity’s “Halt” command.

Reference: None

Purpose: State transition handling. Note: Devices that use a removable storage device as the Local

System Interface must provide instructions on when the device can be safely removed from the device.

Disposition: Mandatory for Category A LSI, Optional for Category B LSI

Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC005v001 State Transition - Run to No Power

Description: The “Here I Am” device shall perform a state transition from Run State to No Power State upon loss of power.

Reference: None

Purpose: State transition handling

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC006v001 State Transition - Quiet to No Power

Description: The “Here I Am” device shall perform a state transition from Quiet State to No Power State upon loss of power.

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Purpose: State transition handling

SRD-USDOTHIA-002-ReqOMC007v001 State Transition - Quiet to Run

Description: The “Here I Am” device shall perform a state transition from Quiet State to Run State when the ignition state determined from the switched battery feed or a bus message transitions to “On”.

Reference: None

Purpose: State transition handling

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC008v001 State Transition - No Power to Run

Description: The “Here I Am” device shall perform a state transition from No Power State to Run State upon return of power.

Reference: None

Purpose: State transition handling

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SRD-USDOTHIA-002-ReqOMC009v001 State Transition - Halt to Run

Description: The “Here I Am” device shall perform a state transition from Halt State to Run State in response to an Authorized Entity’s “Run” command.

Reference: None

Purpose: State transition handling

Disposition: Mandatory for Category A LSI, Optional for Category B LSI

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC010v001 State Transition - Halt to No Power

Description: The “Here I Am” device shall perform a state transition from Halt State to No Power State upon loss of power.

Reference: None

Purpose: State transition handling

Disposition: Mandatory

Performance Criteria: Pass\Fail

Document Type System Requirement Description

Document No.

USDOTHIA

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SRD-USDOTHIA-002-ReqOMC011v001 Device Shutdown

Description: The “Here I Am” device shall enter the Quiet State no more than 15 minutes after ignition state transitions to “Off”.

Reference: None

Purpose: Enables device to continue transmitting when\if vehicle is disabled.

Disposition: Mandatory

Performance Criteria: Pass\Fail

5.2.2 Operational Configuration

SRD-USDOTHIA-002-ReqOMC012v001 Device Software/Firmware

Description

: The “Here I Am” device shall execute its currently installed software/firmware.

Purpose: Enables device operation.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC013v001 Device Configuration

Description:

The “Here I Am” device shall operate using the currently stored configuration parameters.

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

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Purpose: Enables flexible and adaptable device operation.

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC014v001 Configuration Storage

Description: The “Here I Am” device shall store all configuration parameters in a configuration file

(hereinafter referred to as the Configuration File, described in Appendix B).

Reference: None

Purpose: Provides mechanism to change device setup. Configurable parameters will be discussed in the appropriate requirements throughout the document.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC015v001 Configuration Default

The “Here I Am” device shall have a default value defined for each configuration parameter in the Configuration File.

Reference: None

Purpose: Support operations by providing default operational configuration values.

Disposition: Mandatory

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

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SRD-USDOTHIA-002-ReqOMC016v001 Configuration Review

: The “Here I Am” device shall enable, when the device is in Halt State, an authorized entity to view (via the LSI) the value of any configuration parameter in the Configuration File.

Reference: None

Purpose: Enables (local) review of the contents of the currently loaded Configuration File.

Disposition: Mandatory for Category A LSI, Optional for Category B LSI.

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC017v001 Configuration Modification update (via the LSI) the value of any configuration parameter in the Configuration File.

Reference: None

Purpose: Enables (local) modification of the contents of the currently loaded Configuration File.

Disposition: Mandatory for Category A LSI, Optional for Category B LSI.

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC018v001 Configuration Modification Validation

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

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: The “Here I Am” device shall validate each attempted change to the value of any configuration parameter in the Configuration File.

Reference: None

Purpose: Prevents setting an invalid value for a configuration parameter in the Configuration File.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC019v001 Configuration Upload upload (via the LSI) the device’s Configuration File.

Reference: None

Purpose: Enables uploading of the Configuration File from the device for archiving, maintenance or troubleshooting.

Disposition: Mandatory for Category A LSI, Optional for Category B LSI.

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC020v001 Configuration Download download (via the LSI) a Configuration File for the device.

Reference: None

Purpose: Enables downloading of Configuration File onto the device for initial configuration, maintenance or troubleshooting.

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

Volume No

Disposition: Mandatory for Category A LSI, Optional for Category B LSI.

Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC021v001 Configuration Download Validation

: The “Here I Am” device shall not accept any (downloaded) configuration file with an invalid value of any configuration parameter in the Configuration File.

Reference: None

Purpose: Prevents downloading of an incomplete, faulty or corrupt Configuration File onto the device.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqOMC022v001 Configured Operations

The “Here I Am” device shall, when in Run mode, operate using the currently stored operational configuration values.

Reference: None

Purpose: Enables flexible and adaptable device operation.

Disposition: Mandatory

Performance

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

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5.2.3 System Message Log

SRD-USDOTHIA-002-ReqSML001v001 System Message Storage

Description: The “Here I Am” device shall accept and store messages generated by internal components in formatted files generically called System Message Log (SML).

Reference: None

Purpose: Enables access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqSML002v001 System Message Timestamp

Description: The “Here I Am” device shall ensure that each logged message contains a UTC timestamp for each logged message. (i.e. transmitted 802.11p frames).

Reference: None

Purpose: Enables access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Disposition: Mandatory

Performance Criteria: Pass\Fail

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

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SRD-USDOTHIA-002-ReqSML003v001 System Message Log Time Threshold

: The “Here I Am” device shall close the active SML file when configurable time threshold (default to no time limit) is reached.

Reference: None

Purpose: Enables access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqSML004v001 System Message Log Size Threshold

: The “Here I Am” device shall close the active SML file when configurable size threshold (default to no size limit) is reached.

Reference: None

Purpose: Enables efficient access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqSML005v001 System Message Log Close when Halted

: The “Here I Am” device shall close the active SML file when transitioning to a “Halt” state.

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

Volume No

Purpose: Enables access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqSML006v001 System Message Log Creation

: The “Here I Am” device shall create and use a new active SML file upon closing the previously active SML file.

Reference: None

Purpose: Enables access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqSML007v001 System Message Log Filename

: The “Here I Am” device shall create SML files with unique filenames consisting of a UTC date-stamp and a sequence number.

Reference: None

Purpose: Enables access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Document Type System Requirement Description

Document No.

USDOTHIA

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SRD-USDOTHIA-002-ReqSML008v001 System Message Log Retention

: The “Here I Am” device shall retain SML files indefinitely provided that sufficient storage is available.

Reference: None

Purpose: Enables access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqSML009v001 System Message Log Purge

: The “Here I Am” device shall, if there is insufficient storage available for additional SML files or records to be generated, purge the oldest of the currently stored SML files or records until sufficient storage is made available.

Reference: None

Purpose: Enables access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Disposition: Mandatory

Performance

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

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SRD-USDOTHIA-002-ReqSML010v001 System Message Log Access

The “Here I Am” device shall enable authorized entities to access and review SML files stored (locally) on the device.

Reference: None

Purpose: Enables access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqSML011v001 System Message Log Upload

: The “Here I Am” device shall enable authorized entities to transfer SML files from the device to a (remote) back end system.

Reference: None

Purpose: Enables access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqSML012v001 System Message Log Deletion

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

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Description: The “Here I Am” device shall enable authorized entities to delete SML files stored on the device.

Purpose: Enables access to information required to support system operations, such as diagnosis, troubleshooting and support of wider Safety Pilot objectives.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqSML013v001 Logging Transmitted 802.11p Frames

Description: The “Here I Am” device shall store all transmitted 802.11p frames in dedicated SML files.

Reference: None

Purpose: Enables comparison of transmitted and received packets during post test analysis

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqSML014v001 Message Log Format

Description: All transmitted 802.11p frame shall be stored in pcap format file (using libpcap, v1.1.1 or later for Unix based systems; or WinPcap v4.1.2 or later for Microsoft Windows based systems, or equivalent for other operating systems).

Purpose: Determines the format of the message in the SML.

Document Type System Requirement Description

Document No.

USDOTHIA

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SRD-USDOTHIA-002-ReqSML015v001 Transmitted Packet Log Size

Description: The “Here I Am” device shall provide at least 4GB of storage space for the logging of transmitted 802.11 frames in SML files.

Reference: None

Purpose: Provides estimated file storage space for storing log data for 60 days.

Disposition: Mandatory

Performance Criteria: Pass\Fail

5.2.4 Device Positioning and Timing

SRD-USDOTHIA-002-ReqPOS001v001 Positioning Determination Occurrence

The “Here I Am” device shall establish position of the vehicle (and qualifiers) on the surface of the earth every 100ms or at the configured transmit rate.

Reference: None

Purpose: To determine the current vehicle position.

Disposition: Mandatory

Performance

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

Volume No

SRD-USDOTHIA-002-ReqPOS002v001 Vehicle Speed

The “Here I Am” device shall derive its current vehicle speed and heading within values (currently 0.35 m/sec speed and 3 degrees when speed >12.5 m/sec heading) specified in the Model Deployment Safety Device DSRC BSM Communication Minimum Performance Requirements-VSC3 Internal Document, Revision 2.0, 03/31/2011.

Reference: Model Deployment Safety Device DSRC BSM Communication Minimum Performance Requirements-VSC3 Internal Document, Revision 2.0, 03/31/2011.

Purpose: To determine the current vehicle speed and heading.

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqPOS003v001 Vehicle Position

Description: The “Here I Am” device shall derive its current vehicle position within values (currently 1.5m longitude, 1.5m latitude, and 3.0m elevation) specified in the Model Deployment Safety Device DSRC BSM Communication Minimum Performance Requirements-VSC3 Internal Document, Revision 2.0, 03/31/2011.

Reference: Model Deployment Safety Device DSRC BSM Communication Minimum Performance

Requirements-VSC3 Internal Document, Revision 2.0, 03/31/2011.

Purpose: To make vehicle speed and position data available for device applications.

Disposition: Mandatory

Performance Criteria: Pass\Fail

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

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SRD-USDOTHIA-002-ReqPOS004v001 Positioning Failure Handling

The “Here I Am” device shall use a proper null value in transmitted messages should it not be able to determine its current position.

Reference: None

Purpose: To facilitate diagnostics and troubleshooting.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqPOS005v001 Positioning Corrections

Description: The “Here I Am” device shall, for any device using a GPS receiver as part of its positioning service, be configurable (default to ON) to use WAAS corrections.

Reference: None

Purpose: To increase the accuracy of positioning information.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqPOS006v001 System Timing Source

Description: The “Here I Am” device shall maintain a system clock based on timing information from the

GPS receiver.

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

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Purpose: To increase the accuracy of timing information.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqPOS007v001 System Time Standard

Description: The “Here I Am” device shall conform to the Universal Time, Coordinated (UTC) standard. .

Reference: ITU-R Recommendation TF.460-4: Standard-frequency and time-signal emissions. International

Telecommunication Union, Annex I.

Purpose: Standards conformance.

Disposition: Mandatory

Performance Criteria: Pass\Fail

5.2.5 Device Security

This section of the specification contains the requirements securing the device and controlling access to the device.

Please note that the requirements relating to security of DSRC communications are located in a separate section (5.3.5) of the document.

SRD-USDOTHIA-002-ReqSEC001v001 Communications Interface Access Control

Description: The “Here I Am” device shall maintain access control (e.g. configurable firewalls and ACLs) for each non-DSRC communications interface configured for IP.

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

Volume No

Purpose: Enables device security while providing access for authorized entities in support of operations and maintenance.

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqSEC002v001 Secure non-DSRC Communications

Description: The “Here I Am” device shall support at least one of the following secure access mechanisms for each non-DSRC communications interface configured for IP.

• Transport Layer Security (TLS) v1.2

• Internet Protocol Security (IPSec) for IPv4

• Internet Protocol Security (IPSec) for IPv6

• Secure Shell, v2 (SSH-2)

• SSH File Transfer Protocol v6.

Purpose: Enables secure communications over IP enabled (non-DSRC) links in support of operations and maintenance.

Disposition: Mandatory

Performance Criteria: Pass\Fail

5.3 DSRC Radio Subsystem

5.3.1 FCC Compliance

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

Volume No

SRD-USDOTHIA-002-ReqDRS006v001 FCC Regulation 47 CFR Compliance for DSRC

Description: The “Here I Am” device shall comply with Federal Communications Commission (FCC) 47

Code of Federal Regulations (CFR) Parts 0, 1, 2, 90, and 95 amendments for Dedicated Short Range Communications (DSRC).

Reference: Federal Communications Commission (FCC) 47 Code of Federal Regulations (CFR) Parts 0, 1, 2, 90, and 95 amendments for Dedicated Short Range Communications Services and Mobile Service for Dedicated Short Range Communications of Intelligent Transportation Service in the 5.850-5.925 GHz Band (5.9 GHz Band).

Purpose: FCC Compliance

Performance Criteria: Pass\Fail

5.3.2 Radio Count

SRD-USDOTHIA-001-ReqDRS007v001 Number of DSRC Radios

Description: The “Here I Am” device shall support one radio configured to operate at 5.9GHz (DSRC).

Purpose: DSRC radio coverage and performance.

Disposition: Mandatory

Performance Criteria: Pass\Fail

5.3.3 IEEE 802.11

Document Type System Requirement Description

Document No.

USDOTHIA

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SRD-USDOTHIA-002-ReqDRS008v001 IEEE 802.11 Conformance

Description: The “Here I Am” device shall conform to IEEE Std. 802.11-2007

Reference: IEEE 802.11-2007

Purpose: Standards Conformance

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqDRS009v001 IEEE 802.11 Physical Layer

Description: The “Here I Am” device shall implement options defined in Clause 17 of IEEE 802.11-2007, unless otherwise indicated (including all data rates in 17.2.3.3).

Reference: IEEE 802.11-2007, Clause 17

Purpose: Standards Conformance

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqDRS010v001 IEEE 802.11 Modulation Scheme

Description: The “Here I Am” device shall implement the Orthogonal Frequency-Division Multiplexing

(OFDM) physical layer of the Open Systems Interconnection (OSI) model.

Reference: IEEE 802.11-2007, Clause 17

Purpose: Standards Conformance

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

Volume No

Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqDRS011v001 IEEE 802.11 Default Values

Description: The “Here I Am” device shall use the default values defined in IEEE 802.11-2007 unless otherwise indicated (including the coverage class in 17.3.8.6).

Reference: IEEE 802.11-2007

Purpose: Standards Conformance

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqDRS012v001 IEEE 802.11 Quality of Service

Description: The “Here I Am” device shall send 802.11 data frames using the Quality of Service (QoS) Data subtype.

Reference: IEEE 802.11-2007

Purpose: Standards Conformance

Disposition: Mandatory

Performance

Document Type System Requirement Description

Document No.

USDOTHIA

Issue Index 002.2

Volume No

SRD-USDOTHIA-002-ReqDRS013v001 Arbitration Interframe Spacing Value

Description: The “Here I Am” device shall configure an AIFS of a given access category with an integer value from 2 to X, where the value of X is based on the chip set used – as defined by the vendor.

Reference: IEEE 802.11-2007

Purpose: Standards Conformance

Disposition: Mandatory

Performance Criteria: Pass\Fail

SRD-USDOTHIA-002-ReqDRS014v001 Transmission Opportunity Value

Description: The TXOP Limit of a given AC shall be capable of being set to 0.

Reference: IEEE 802.11-2007

Purpose: Standards Conformance

Disposition: Mandatory

Perform…