Pathway Communications Unit --> Transportation Information Center:
communications signature

Definitions

communications signature (Information Flow): Communications from vehicle or personal devices that can be monitored by ITS field equipment to uniquely identify the device. This flow represents communications from devices (via Bluetooth or Wi-Fi) that may be monitored by ITS field equipment or any other passive or active communications from the device that can be used to identify the device. This flow specifically covers passive monitoring of device communications.

Pathway Communications Unit (Source Physical Object): The 'Pathway Communications Unit' provides wireless communications between the pathway infrastructure (either indoor or outdoor) and nearby mobile devices; Communications with adjacent field equipment (including other PCUs) and back-office centers that monitor and control the PCU are also supported. The PCU provides basic radio communications supporting the lower layers of the OSI stack (TransNet and SubNet layers of the ARC-IT communications model). Importantly, it can also serve as a reference for mobile devices to determine their position more accurately (e.g., through triangulation or other means).

Transportation Information Center (Destination Physical Object): The 'Transportation Information Center' collects, processes, stores, and disseminates transportation information to system operators and the traveling public. The physical object can play several different roles in an integrated ITS. In one role, the TIC provides a data collection, fusing, and repackaging function, collecting information from transportation system operators and redistributing this information to other system operators in the region and other TICs. In this information redistribution role, the TIC provides a bridge between the various transportation systems that produce the information and the other TICs and their subscribers that use the information. The second role of a TIC is focused on delivery of traveler information to subscribers and the public at large. Information provided includes basic advisories, traffic and road conditions, transit schedule information, yellow pages information, ride matching information, and parking information. The TIC is commonly implemented as a website or a web-based application service, but it represents any traveler information distribution service.

Included In

This Triple is in the following Service Packages:

• TI08: Personal Wayfinding

This triple is associated with the following Functional Objects:

• PCU Communications
• TIC Wayfinding Information Dissemination
• TIC Wayfinding Planning

This Triple is described by the following Functional View Data Flows:

• pathway_usage_info_from_comms

This Triple has the following triple relationships:

Communication Solutions

• (Data Not Needed) - Secure Internet (ITS) (3)
• (None-Data) - Secure Internet (ITS) (43)

Selected Solution

(Data Not Needed) - Secure Internet (ITS)

Solution Description

ITS Application Entity No Standard Needed			Click gap icons for more info.
Mgmt Bundle: SNMPv3 MIB	Facilities No Standard Needed	Security Secure Session Alternatives
	TransNet IP Alternatives Internet Transport Alternatives
	Access Internet Subnet Alternatives

Note that some layers might have alternatives, in which case all of the gap icons associated with every alternative may be shown on the diagram, but the solution severity calculations (and resulting ordering of solutions) includes only the issues associated with the default (i.e., best, least severe) alternative.

Characteristics

Security