ISO TS 17423:2014 pdf free

ISO TS 17423:2014 pdf free.Intelligent transport systems一Cooperative systems一ITS application requirements and objectives for selection of communication profiles
The ITS station (ITS-S) reference architecture presented in Figure 2 and specified in ISO 21217 distinguishes two main blocks, i.e. “Applications” and “Communications”. ITS-S application processes in “Applications” access communication services in “Communications” through an API. Portability of ITS-S application processes, which leads to the creation of ITS application process repositories as described in ISO/TS 17419, is enabled by
一abstraction of ITS-S application processes (in “Applications”) from communication protocols (in “Facilities”, “Networking & Transport”, “Access”) and supporting management and security functionality (in “Management”, “Security”) introduced as an essential basics of an ITS station in ISO 21217, and
一procedures by which instances of ITS-S application processes running in an ITS station unit (ITS-SU) specified in ISO 21217 can present requirements for communication services in an abstract and standardized way to the ITS station management as specified in this Technical Specification, and
一procedures for automatic selection of optimum communication profiles by the ITS station management for each set of required communication services.
Communication service requirements are presented by means of communication service parameters as identified in this Technical Specification. These parameters are used to identify sets of possible choices of ITS-S communication profiles as well as selecting the “optimal” ITS-S communication profile out of each set. The selection of the “optimal” ITS-S communication profile is implementation dependent and generally involves the formulation of a cost function based on objectives that needs to be extremized (maximized or minimized) as discussed in Annex C.
There are also other application processes that can get access to the communication tools of an ITS-SU. Such other application processes are not certified to be installed in an ITS-SU implemented as a BSME as described in ISO 21217 and ISO/TS 17419, but may use selected functionality from it, especially communication functionality.
Figure 3 ilustrates a simplified version of Figure 2 to be applied to the process ilustrated in Figure 1 considering ITS-S application processes in general.ISO TS 17423 pdf free download.