Savari STREETWAVE User manual

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Savari
STREETWAVE™ User Guide
Release 5.7
Document Version 1.6
October 19, 2017

Copyright © Savari, Inc., 2017. All Rights Reserved. This publication, in whole or in part,
may not be reproduced, stored in a computerized, or other retrieval System or
transmitted in any form, or by any means whatsoever without the prior written
permission from Savari Inc.

Regulatory Compliance
IMPORTANT NOTE: FCC Compliance statement
Note: This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be required to correct the
interference at his own expense.
Any changes or modifications made to this device that are not expressly
approved by Savari, Inc. may void the user’s authority to operate the equipment.
IMPORTANT NOTE: FCC RF exposure statement
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. End users must follow the specific operating
instructions for satisfying RF exposure compliance. This transmitter must be at
least 20 cm from the user and must not be co‐located or operating in conjunction
with any other antenna or transmitter.
The information in this guide may change without notice. The manufacturer
assumes no responsibility for any errors that may appear in this guide.

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Table of Contents
1INTRODUCTION...........................................................................................................................................7
2ABBREVIATIONS..........................................................................................................................................8
3SETUPGUIDE................................................................................................................................................9
3.1HARDWAREANDSOFTWARESPECIFICATIONS..................................................................................................9
3.2POWER.....................................................................................................................................................................9
3.3GPS...........................................................................................................................................................................9
3.4DSRCRADIOS.......................................................................................................................................................10
3.5ANTENNAS.............................................................................................................................................................10
3.6STORAGE................................................................................................................................................................10
3.7LED........................................................................................................................................................................10
3.8ETHERNET.............................................................................................................................................................10
3.9ENCLOSURE...........................................................................................................................................................10
4STREETWAVE™FEATURES.....................................................................................................................11
4.1DSRCRADIOPAIR................................................................................................................................................11
4.2IPV4ANDIPV6NETWORKING...........................................................................................................................12
4.3IMMEDIATEFORWARD.........................................................................................................................................12
UDPListener.........................................................................................................................................................12
4.3.1
UDPStreaming.....................................................................................................................................................13 4.3.2
4.4STOREANDREPEAT.............................................................................................................................................13
ActiveStoreandRepeatMessageConfiguration..................................................................................13
4.4.1
4.51609.3IPV6PROVIDER.....................................................................................................................................14
4.61609.2SECURITY................................................................................................................................................14
4.7INTERFACELOGGING............................................................................................................................................15
4.8DSRCMESSAGEFORWARD.................................................................................................................................15
5STREETWAVE™GETTINGSTARTEDUSINGTHECLI......................................................................16
5.1ACCESSINGMETHODS..........................................................................................................................................16
5.2DEFAULTCONFIGURATION(CLI).......................................................................................................................16
5.3SYSTEMSTATE.......................................................................................................................................................17
5.4APPLICATIONS.......................................................................................................................................................18
StoreandRepeat.................................................................................................................................................18
5.4.1
ImmediateForward...........................................................................................................................................18 5.4.2
Gpsoutput..............................................................................................................................................................20 5.4.3
Radio.........................................................................................................................................................................20 5.4.4
Ipv6Provider........................................................................................................................................................21 5.4.5
DSRCMessageForward...................................................................................................................................22 5.4.6
TCD............................................................................................................................................................................22 5.4.7
NTCPclient..............................................................................................................................................................24 5.4.8
RTCM.........................................................................................................................................................................24 5.4.9
5.5SYSTEMSTATUS....................................................................................................................................................24
DiskUsage..............................................................................................................................................................25
5.5.1
MemoryUsage......................................................................................................................................................25 5.5.2
CPUUsage..............................................................................................................................................................25 5.5.3
Network...................................................................................................................................................................25 5.5.4
Firewall....................................................................................................................................................................26 5.5.5
AccessControlList(ACL).................................................................................................................................27 5.5.6
GPSStatus..............................................................................................................................................................27 5.5.7
RSUUptime............................................................................................................................................................27 5.5.8

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RSUStats.................................................................................................................................................................28 5.5.9
APPStats...........................................................................................................................................................30 5.5.10
5.6VISUALSTATUSINDICATORS...............................................................................................................................31
6USINGTHECOMMANDLINEINTERFACE(CLI)................................................................................32
6.1LOGFILEHANDLING............................................................................................................................................32
InterfaceLogs.......................................................................................................................................................32
6.1.1
Tx/RxPacketLogFileNameFormat.........................................................................................................32 6.1.2
RetrievingthePCAPFiles................................................................................................................................32 6.1.3
DeletingthePCAPFiles....................................................................................................................................33 6.1.4
6.2NETWORKCONFIGURATION................................................................................................................................33
IPAddressconfiguration.................................................................................................................................33
6.2.1
6.3FIREWALLCONFIGURATION................................................................................................................................33
6.4IMMEDIATEFORWARD.........................................................................................................................................33
6.5STOREANDREPEAT.............................................................................................................................................33
6.6SAMPLESAFETYPILOTDEPLOYMENTCONFIGURATION................................................................................34
6.7SCMSSERVERCONNECTION..............................................................................................................................36
HighLevelArchitecture...................................................................................................................................36
6.7.1
StreetWAVE™Configuration.........................................................................................................................37 6.7.2
ConfigureLANandDSRCIPaddressesonStreetWAVE™................................................................37 6.7.3
ConfigureFirewallRulestoForwardPacketsfromDSRCInterfacetoEthernetInterface 6.7.4
ofStreetWAVE™...................................................................................................................................................................38
ConfigureIPV6App.............................................................................................................................................38
6.7.5
PacketLoggingConfiguration......................................................................................................................39 6.7.6
CopyingtheSystemMessageLogs..............................................................................................................39 6.7.7
7FIRMWAREUPGRADEPROCEDUREUSINGTHECLI......................................................................41

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LIST OF FIGURES
Figure 1: StreetWAVEArchitecture Diagram...............................................................................11
Figure 2: Supported Applications ................................................................................................ 18
Figure 3: Store and Repeat........................................................................................................... 18
Figure 4: Immediate Forward ...................................................................................................... 19
Figure 5: GPS Output................................................................................................................... 20
Figure 6: Radio ............................................................................................................................ 20
Figure 7: IPv6-provider................................................................................................................ 21
Figure 8: DSRC Message Forward.............................................................................................. 22
Figure 9: Ntpclient....................................................................................................................... 24
Figure 10: RTCM......................................................................................................................... 24
Figure 11: Safety Pilot Deployment............................................................................................ 35
REVISION HISTORY
Sl No Date Chapter Description Version
1 30-05-2017 5.5, 5.6 Added supported services with screenshots
2 30-06-2017 3.1, 3.4 Added FCC power limits and dimensions 1.5
3 17-10-2017 3.1 Updated section 3.1 1.6

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1 Introduction
RSU2 is the next generation Road-side Unit (RSU) developed by Savari Inc. primarily for the
USDOT (United States Department of Transportation) Connected Vehicles program. It is the
latest addition to the StreetWAVE™ family of products. It is capable of transmitting signed or
unsigned MAP Data message, Signal Phase and Immediate Forward message, Store and
Repeat, and providing IPv6 connectivity to OBUs over a dedicated short-range communications
(DSRC) 5.9 Gigahertz (GHz) wireless networks using the following protocol stack and other
standards associated with DSRC for vehicular communications:
IEEE 802.11p
IEEE 1609-1 through 1609-4
J2735 (2016 version)
USDOT RSU 4.1 specification
StreetWAVE™ has a provisioning/test interface that can receive and load new versions of
software, new configurations and credentials, and instructions to perform logging functions and
download log messages to an external device. This device can be mounted on different
roadside locations (E.g.: traffic pole)

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2 Abbreviations
The following are the abbreviations used throughout this document:
Abbreviation Expansion
ASN1 Abstract Syntax Notation 1
CA Certificate Authority
CSV Comma Separated Value
DHCP Dynamic Host Control Protocol
DNS Dynamic Naming Service
DSRC Dedicated Short Range Communication
GID Geometric Intersection Description
GPS Global Positioning Satellite
HTTP Hypertext Transfer Protocol
ITS Intelligent Transportation Systems
ITIS International Traveler Information Systems
IP Internet Protocol
LED Light Emitting Device
LTM Left Turn Movement
MAP Map Data
MIB Management Information Base
NTCIP National Transportation Communications for ITS Protocol
OBU/OBE On-Board Equipment/On-Board Unit
PCAP Packet Capture
PSID Provider Service Identifier
RDNSS Recursive DNS Server
RFC Request for Comments
RSE/RSU Roadside Equipment/Roadside Unit
RNDF Route Network Definition File
RTM Right Turn Movement
RX Receive
SAE Society for Automotive Engineers
SSH Secure Shell
SPaT Signal Phase and Timing
SNMP Simple Network Management Protocol
TC Traffic Controller
TCID Traffic Controller Interface Device
TCP Transmission Control Protocol
TM Through Movement
TIM Traveler Information Message
TX Transmit
UDP User Datagram Protocol
WAVE Wireless Access in Vehicular Environments
WSA WAVE Service Announcement

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3 Setup Guide
Please refer to the StreetWAVE™ Installation Guide for more details on the StreetWAVE™
hardware components and installation procedures.
3.1 Hardware and Software Specifications
Item Description
Mechanical 22 cm (L), 22 cm (W), 12 cm (H), 2 kg (weight)
Processor 1 GHz dual core i.MX6
Memory Up to 4GB DDR3 DRAM
Storage Up to 32GB µSD Flash
2-8GB eMMC
DSRC Radio Two IEEE 802.11p 5GHz, 600mW, -94dB receiver
sensitivity
GPS U-blox. Tracking sensitivity -160 dBm
Secure Flash Infineon HSM SLI97
Ethernet 10/100 RJ-45 ports with Auto Uplink.
Power Supply 5V-30V DC Input for RSU2
Temperature -40C to +85C
Standards Compliance IEEE 802.11p, IEEE 1609.2, IEEE 1609.3, IEEE 1609.4,
SAE J2735 (2016)
Security SSL, Firewall, 1609.2, HSM
RF Antenna Connectors SMB Male FAKRA. Type C Blue GPS, Type Z Light Green
DSRC0, Type Z Light Green DSRC1.
Power Consumption

Nominal < 5W
Recommended Power supply 10W
LED Indicators for power, status and diagnostics
3.2 Power
StreetWAVE™ can be powered by using 48V DC Power Over Ethernet (POE)
(CAUTION: Use POE injector/adapters supplied with StreetWAVE™ only)
3.3 GPS
StreetWAVE™ comes with an internal GPS that can provide the following:
1 Hz update rate
Location accuracy of 2 m with WAAS (2.5 m without WAAS)
Note: WAAS is enabled by default.

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3.4 DSRC Radios
DSRC radios support 802.11p in the hardware and transmit power capabilities of up to 19 dBm
e.i.r.p. (up to 10 dBm conducted output power per DSRC Class B). The range of these radios
is 450-500m and can be adjusted using TX power setting.
3.5 Antennas
StreetWAVE™ ships with the following antennas that directly mount to the main unit:
Two 5 GHz DSRC Omni-directional
One magnetic GPS
3.6 Storage
StreetWAVE™ has 4GB of integrated compact flash memory.
Note: StreetWAVE™ supports utilities like ssh and scp to make it easier for retrieving the log
data to an external platform and perform post analysis.
3.7 LED
StreetWAVE™ unit is installed with three LEDs on the panel to indicate power and device
operation state.
3.8 Ethernet
StreetWAVE™ consists of one Ethernet port (eth0) on the panel.
3.9 Enclosure
StreetWAVE™ enclosure is IP67 rated outdoor quality unit.

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4 StreetWAVE™ Features
This chapter explains the salient features of the StreetWAVE™ roadside equipment.
Following is the architecture diagram of StreetWAVE™. Each component is explained briefly in
the following sub-sections:
StreetWAVE™ features are explained briefly in the following sub-sections:
4.1 DSRC Radio Pair
Each StreetWAVE™ unit consists of two (2) integrated high power DSRC radios, which are
exposed as the following two interfaces:
Radio 1
Radio 2
StreetWAVE™ radio configuration is very flexible. Any or both radios can be configured on any
of the following channel modes:
Alternating Channel Access
Continuous Channel Access
The following applications can be configured to use any of the two interfaces (Radio1 or
Radio2):
Immediate Forward
Store and Repeat
IPv6-provider
DSRC Message Forward
TCD
Figure 1: StreetWAVE Software Architecture Diagram

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RTCM
NTP
However, radio configuration between the above-mentioned applications should be consistent.
You can operate multiple StreetWAVE™ units in a hub-and-spoke configuration in which the
hub unit originates a message. It broadcasts those messages on its configured DSRC interface
to OBUs as well as on Ethernet interface to the spoke StreetWAVE™ units in Savari ’s
proprietary format. The spoke StreetWAVE™ units receive them and broadcast them on their
DSRC interfaces, essentially working as DSRC repeaters. This configuration is useful at an
intersection where no specific location has line of sight to all approaches to the intersection.
The Hub unit does not have to be in the traffic controller cabinet. It can be one of the units on
the pole if it has Ethernet connectivity to the cabinet.
4.2 IPv4 and IPv6 Networking
Each StreetWAVE™ unit consists of one Ethernet interface (eth0). StreetWAVE™ provides
support for both IPv4 and IPv6 networking on all its interfaces (eth0, Radio 1, or Radio 2).
You can enable the following on all the three available interfaces:
IPv4 and IPv6 addresses
IPv6 Router Advertisements
StreetWAVE™ can forward both IPv4 and IPv6 packets between its interfaces (Ethernet and
DSRC) acting as a router. It also supports both IPv4 and IPv6 firewalls allowing the following:
Source and destination IPv4 or IPv6 addresses
Port-based rules
4.3 Immediate Forward
StreetWAVE™ Immediate Forward application supports the forwarding feature in addition to the
following features.
UDP Listener 4.3.1
StreetWAVE™ Immediate Forward application listens on configured UDP ports. If any message
is received on these ports in the format specified in USDOT RSE requirements, it will sign the
message using the 1609.2 protocol, if specified in the incoming message, and immediately
transmits on the configured DSRC interface with the PSID and channel specified in the
incoming message. Incoming messages could specify different priorities but it must specify the
same transmit mode (TxMode) and transmit channel (TxChannel). This feature is used when an

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intermediate device (TCID or a Battelle device) is sending periodic Immediate Forward
messages to a StreetWAVE™.
UDP Streaming 4.3.2
The StreetWAVE™ can be configured to receive data from other StreetWAVE™ and stream it
over DSRC. This allows the StreetWAVE™ to function as a repeater. In this setup, one
StreetWAVE™ is configured as the Hub unit and all other StreetWAVE™ that are connected to
it as Spoke units (that are not capable of independently transmitting Store and Repeat,
Immediate Forward etc. and are depending on the Hub to provide this data). The Hub transmits
the data over the air as well as to the Spoke unit typically over an Ethernet link. The Spoke unit,
upon reception of the Hub’s packet, decodes and applies rules that are present in the packet,
signs (if it is present in the packet) and forwards the packet over DSRC. The ability of the
StreetWAVE™ to function in this manner can be used for streaming the packet data (in Savari
proprietary format) from TMCs or back-end servers over the air. This arrangement could be
useful in scenarios where a single StreetWAVE™ may not provide ample coverage for the
geographic area of interest.
4.4 Store and Repeat
StreetWAVE™ supports transmission of Store and Repeat. The Store and Repeat application,
which runs on the StreetWAVE™ unit, transmits on the configured channel over the Radio 1
(default configuration) interface.
Store and Repeat are configured in a data store inside the StreetWAVE™. The data store
supports up to 100 Store and Repeat. The Store and Repeat are stored in the form of Active
message files. Each file contains the transmissions parameters and the actual data of the Store
and Repeat message. Each Store and Repeat message can be scheduled differently. The
active message files follow the USDOT RSE 4.1 Specification.
Active Store and Repeat Message Configuration 4.4.1
StreetWAVE™ supports the USDOT Active Message Configuration file format for configuring
active Store and Repeat messages.
US DOT Active Message Configuration file format
This format is defined in section US DOT RSU 4.1 requirements. Each Store and Repeat
active message should be defined in a separate file.

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4.5 1609.3 IPv6 Provider
StreetWAVE™ supports WSAs as per the 1609.3 protocol. If enabled, StreetWAVE™ switches
channels on the configured interface between the following:
178 (control channel)
Configured service channel.
StreetWAVE™ runs IPv6 traffic on a service channel in the configured service channel interval.
Such IPv6 traffic is transparent to StreetWAVE™. It merely routes IPv6 traffic from/to DSRC
interface from the Ethernet interface.
StreetWAVE™ announces this service availability using WSAs including Service Info and WRA
elements. The Service Info element consists of PSID, channel information, and the service
channel. WRAs consist of router IPv6 prefix, gateway address, and DNS addresses so that
OBEs can configure their IPv6 addresses, default gateway, and DNS servers.
4.6 1609.2 Security
StreetWAVE™ supports 1609.2 Draft 9.3 security protocol. It supports signed Immediate
Forward, and Store and Repeat messages and signed WSAs to announce IPv6 services. The
security feature can be individually enabled or disabled on Immediate Forward, Store and
Repeat, and IPv6 applications.
StreetWAVE™ ships with the following pre-generated certificates supplied by US DOT:
One root certificate
Five different message signing certificates
One WSA signing certificate
The following security profile is used for signing Immediate Forward, and Store and Repeat
messages:
Field Value Notes
include_generation_time True SPAT profile requires true
include_expiration_time false SPAT profile requires false
message_life_time 0 not used in SPAT
include_generation_location True SPAT profile requires false
MAP (Immediate Forward)
Field Value Notes
include_generation_time True MAP profile requires true
include_expiration_time false MAP profile requires false
message_life_time 0 not used in MAP
include_generation_location false MAP profile requires false

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Store and Repeat
Field Value Notes
include_generation_time true TIM profile requires true
include_expiration_time false TIM profile requires false
message_life_time 0 not used in TIM
include_generation_location false MAP profile requires false
WSA
Field Value Notes
certificate_interval 1000
include_generation_time true
include_generation_location true
include_expiration_time true
check_replays true
check_relevance_generation_time true
check_relevance_generation_location true
check_relevance_expiry_time true
4.7 Interface Logging
StreetWAVE™ supports logging all DSRC and IP messages transmitted and received in the
PCAP format to the persistent memory. All packet activity on all interfaces are captured and
logged in the PCAP format. The PCAP files can then be seen in Wireshark after file offload has
transferred the PCAP files to a back-office server. In addition, the system-status log messages
are logged to separate files. There is ~3GB of space set aside for this total logging.
A packet from an OBE can be received and logged potentially by all StreetWAVE™ units at an
intersection. This independent logging feature provides the ability to analyze which unit is
capable of hearing from which approach and from how far. However, it may require analysis of
logs from multiple StreetWAVE™ units to track a single vehicle. Such an analysis can be
performed using post-processing tools and is not the main function of StreetWAVE™. Hence,
this independent logging trade-off is chosen over the complexity of integrated logging.
4.8 DSRC Message Forward
StreetWAVE™ supports the DSRC Message Forward feature as outlined in USDOT RSU 4.1
specification. This application provides the capability to forward any DSRC message received
over the air to an external server over an ethernet link. The specification USDOT RSU 4.1 lists
certain filter criteria that must be met for the messages to be forwarded. The DSRC Message
Forward feature transparently forwards all messages if the filter criterion is successful. The
application does not terminate the packet with regards to security or content.

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5 StreetWAVE™ Getting Started Using the CLI
This section describes the procedures to get the StreetWAVE™ started after installation and
power up.
5.1 Accessing Methods
The StreetWAVE™ can be accessed from any PC or laptop using any of the following modes:
SSH
Note: Serial port access is not available in StreetWAVE™.
1. To Access using SSH
ssh root@ <Default IPAddress> -p<port number>
port number is 51012
Password: As given in the Default Configuration (CLI) section.
5.2 Default Configuration (CLI)
The StreetWAVE™ has the following default configuration:
Username: root
Password: 1[8V:2<J5*W;2I16H1nu
Ethernet (eth0)
Default IPv4 Address: 192.168.100.1
DSRC radio 1 (Radio 1): This radio is configured in channel switching mode with IPv6 support
on service channel 174 and WSAs (with WRAs) on control channel 178. WSAs announce the
same IPv6 which is configurable through CLI
DSRC radio 2 (Radio 2): This radio is configured in the continuous channel mode for channel
172.
Immediate Forward: This application is configured to listen on UDP port *1516 for incoming
Immediate Forward text format messages from TCID over eth0 and broadcast them over DSRC
channel 172.
Firewall:
By default, only the following traffic is allowed. Rest of the traffic is blocked.
Incoming UDP over IPv6 traffic on eth0 from FD01:1234:0186:8000::/64 destined to
StreetWAVE™ port 1516: Incoming IPv6 traffic from TCID to StreetWAVE™.
Incoming UDP over IPv4 traffic on eth0 destined to StreetWAVE™ port 51013: Incoming

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IPv4 traffic from TCID to StreetWAVE™.
Incoming IPv4 and IPv6 inter StreetWAVE™ UDP streaming traffic on port 51015: Inter
StreetWAVE™ UDP streaming traffic.
Incoming TCP over IPv6 or IPv4 traffic on eth0 to ports 51012 (ssh, scp) and 8080(web)
of StreetWAVE™: Management access.
Incoming UDP over IPv6 or IPv4 traffic on eth0 to port 3334 of StreetWAVE:
All ICMPv6 and ICMP (v4) packets: StreetWAVE™ learning neighbors and vice versa.
All StreetWAVE™ originated outgoing traffic.
5.3 System State
StreetWAVE™ is in following two different states when powered on:
Run: All applications (Store and Repeat, DSRC Message Forward, Immediate Forward,
and IPv6) have started up.
Note: The run command takes the system to run state.
Standby: All applications (Store and Repeat, DSRC Message Forward, Immediate
Forward, and IPv6) are shut down.
Note: The Standby command takes the system to standby state.
StreetWAVE™ automatically enters to run state after it is powered on. To cycle system state,
please use the standby command followed by the run command.
Caution: The system should be halted (“halt”) before turning off power. Else, the TX/RX packet
logs and system log files in the “/nojournal/” directory might get corrupted.

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5.4 Applications
This section explains the parameters/counters of individual applications. These counters get
reset when the user places the StreetWAVE™ into a ‘run’ state from a corresponding standby.
Store and Repeat 5.4.1
Immediate Forward 5.4.2
Figure 2: Supported Applications
Figure 3: Store and Repeat

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Figure 4: Immediate Forward

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GPS Output 5.4.3
The StreetWAVE™ unit shall send the GPGGA NMEA string to a specific UDP port at a
specified rate, upon acquisition of 3 or more satellites.
The following parameters are displayed in the Gpsoutput app status command:
show app gpsoutput all
Radio
5.4.4
We can configure both the radios (Radio 1 and Radio 2) service channel and channel mode
either alternative or continuous.
The following parameters are displayed in the Radio config app status command:
Figure 5: GPS Output
Figure 6: Radio