Summary

In a city, there are the basic elements like people, things and events. Their mobility and positioning are increasingly dependent upon information related to location and/or time, supported by a spatiotemporal information service (STIS). Although related services have already emerged and been provided, the lack of standards may affect their sharing, service capabilities, and interoperability. Therefore, a standard is needed to specify what kinds of STIS should be provided for people, things and events in smart cities, including the functions and metadata of STIS.

Recommendation ITU-T Y.4562 introduces the concepts of STIS for smart cities, and specifies the functions and metadata of STIS. The functions and metadata of STIS can support the applications of STIS for smart cities, so as to better meet the needs of people, things and events. The functions and metadata are universal and can be applied to any cities in the world.