Location and Time Data Source --> Center:
location and time
Definitions
location and time (Information Flow): The current geographic location in three dimensions (latitude, longitude, elevation) and the current time.
Location and Time Data Source (Source Physical Object): The 'Location and Time Data Source' provides accurate position information. While a Global Positioning System (GPS) Receiver is the most common implementation, this physical object represents any technology that provides a position fix in three dimensions and time with sufficient accuracy.
Center (Destination Physical Object): This general physical object is used to model core capabilities that are common to any center.
Included In
This Triple is in the following Service Packages:
This triple is associated with the following Functional Objects:
This Triple is described by the following Functional View Data Flows:
This Triple has the following triple relationships:
None |
Communication Solutions
- GNSS Data - GNSS serial interface (6)
Selected Solution
Solution Description
ITS Application Entity
NMEA 0183 |
Click gap icons for more info.
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Mgmt
No Standard Needed |
Facilities
No Standard Needed |
Security
No Standard Needed |
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TransNet
NMEA 0183 |
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Access
NMEA 0183 |
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
Characteristic | Value |
---|---|
Time Context | Now |
Spatial Context | Adjacent |
Acknowledgement | False |
Cardinality | Broadcast |
Initiator | Source |
Authenticable | True |
Encrypt | False |
Interoperability | Description |
---|---|
Local | In cases where an interface is normally encapsulated by a single stakeholder, interoperability is still desirable, but the motive is vendor independence and the efficiencies and choices that an open standards-based interface provides. |
Security
Information Flow Security | ||||
---|---|---|---|---|
Confidentiality | Integrity | Availability | ||
Rating | Low | High | High | |
Basis | Time reference and location information for Center systems should be observable. There is no reason to obfuscate. | Location and time data is the basis for safety and a host of other applications.While a center-system is probably not in the critical decision path for safety-related applications, it is likely to be in the critical path for applications that have a significant effect on system wide applications of other types. Considering the wide-ranging impact a corruption in time and or location could have on those applications, a compromise in this flow could have major negative impacts. | If this information is not available, applications depending on this information will not function properly. Given the scope of center-based applications, this flow's availability is of paramount importance. |
Security Characteristics | Value |
---|---|
Authenticable | True |
Encrypt | False |