T/TIAA 002-2015 Car-mounted terminal and handheld terminal interconnection specification

Scope

Scope: This standard specifies the application scenarios, functional requirements, interface architecture, business processes, message definitions, and data formats for the interconnection between vehicle-mounted terminals and handheld terminals. This standard is applicable for reference by vehicle-mounted terminal manufacturers, handheld terminal manufacturers, and handheld terminal application software development enterprises. Main technical content: Key technical indicators - The handheld terminal client and vehicle-mounted terminal client software should respond quickly, be able to complete process handling within a certain timeframe, and provide a good user experience. - Startup speed: The time from when the handheld terminal client and vehicle-mounted terminal client start up to when they operate stably should be less than 2 seconds. - Connection establishment speed: The time from when the handheld terminal client and vehicle-mounted terminal client are both operating stably and have a reliable physical connection to when the interconnection request is initiated from the vehicle-mounted terminal client and the connection is established should be less than 2 seconds. - Interface delay: The display delay between the interface of the handheld terminal client and the interface of the vehicle-mounted terminal client should be less than 0.5 seconds. - Keyboard response speed: The response time of the handheld terminal client and vehicle-mounted terminal client to user keyboard input should be less than 0.5 seconds.

Development Information

Related Standards