ITU

This Recommendation outlines the key performance indicators (KPIs) in the context of smart sustainable cities (SSC) used to assess the achievement of sustainable development goals (SDGs). Evaluating these indicators can help cities as well as their stakeholders understand to what extent they may be perceived as smart and sustainable.
The sustainability of a smart city is based on five main aspects:
– Economic: The ability to generate income and employment for the livelihood of the inhabitants.
– Social: The ability to ensure that the welfare (safety, health, education, etc.) of the citizens can be equally delivered despite differences in class, race or gender.
– Environmental: The ability to protect future quality and reproducibility of natural resources.
– Governance: The ability to maintain social conditions of stability, democracy, participation and justice.
– Cultural: The ability to promote cultural identity and adequacy, value and emotional well-being.

Recommendation ITU-T Y.4902/L.1602 gives a general guidance to cities and provide the definitions of key performance indicators (KPIs) related to the sustainability impact of information and communication technology (ICT) in the context of smart sustainable cities (SSCs).
This Recommendation is one of series of the Recommendations and Supplements that define KPIs. The series of KPI definitions documents also include:
• Recommendation ITU-T Y.4900/L.1600 on overview of key performance indicators (KPIs) in smart sustainable cities.
• Recommendation ITU-T Y.4901/L.1601 on key performance indicators (KPIs) related to the use of information and communication technology (ICT) in smart sustainable cities. This Recommendation lists the KPIs used for ICT use in SSC.
• Supplement ITU-T Y. Suppl. 39 on key performance indicators (KPIs) for smart sustainable cities. This document provides information regarding KPIs and evaluation index systems of smart cities, KPIs of sustainable cities, etc.

Recommendation ITU-T Y.4901/L.1601 gives a general guidance to cities and provides the definitions of key performance indicators (KPIs) related to the use of information and communication technology (ICT) in the context of smart sustainable cities (SSCs).
This Recommendation is one of series of the Recommendations and Supplements that define KPIs. The series of KPI definitions documents also include:
• Recommendation ITU-T Y.4900/L.1600 on overview of key performance indicators (KPIs) in smart sustainable cities.
• Recommendation ITU-T Y.4902/L1602 on key performance indicators (KPIs) related to the sustainability impacts of information and communication technology (ICT) in smart sustainable cities. This Recommendation lists the KPIs used for ICT impact on sustainability.
• Supplement ITU-T Y-Suppl. 39 on key performance indicators (KPIs) for smart sustainable cities. This document provides information regarding KPIs and evaluation index systems of smart cities, KPIs of sustainable cities, etc.

Recommendation ITU-T Y.4900/L.1600 gives a general guidance to cities and provides an overview of key performance indicators (KPIs) in the context of smart sustainable cities (SSCs).
This Recommendation is one of series of the Recommendations and Supplements that define KPIs. The series of KPI definitions documents also include:
• Recommendation ITU-T Y.4901/L.1601 on key performance indicators (KPIs) related to the use of information and communication technology (ICT) in smart sustainable cities. This Recommendation lists the KPIs focusing on ICT use in smart sustainable cities (SSCs).
• Recommendation ITU-T Y.4902/L.1602 on key performance indicators (KPIs) related to the sustainability impacts of information and communication technology (ICT) in smart sustainable cities. This Recommendation lists the KPIs used for ICT impact on sustainability.
• Supplement ITU-T Y-Suppl. 39 on key performance indicators (KPIs) for smart sustainable cities. This document provides information regarding KPIs and evaluation index systems of smart cities, KPIs of sustainable cities, etc.

A growing number of smart cities and administrations are inclined to collaborate and mutualize their efforts and resources for IoT deployments and open data sharing. This Recommendation studies the concept and potential of developing a secure open and interoperable API in the context of IoT deployment and open data management in smart cities. It subsequently specifies an open and interoperable API for secure open data architecture, as well as for supporting IoT data interoperability for smart cities. This Recommendation presents a complete set of Open APIs dedicated to smart cities offering different features covering the needs of interoperable smart city framework development. In order to achieve interoperability between heterogeneous platforms and the development of smart cities, the Recommendation has proposed "interoperability points" in southbound and northbound interfaces in a smart city framework. It provides a list of core API sets focusing on data interoperability, including context data management APIs, data transactions APIs, data storage APIs and security APIs. Through the mechanism of subscriptions, it is possible to get a performant and scalable context data managment. The data storage APIs allow a granular management of the saved data for all cases. The data transaction APIs facilitate exposure and access to the data through a data marketplace. In addition, security and privacy APIs are seriously taken into account to provide secure data exchange. It should be noted that data interoperability with open APIs can be completed by using common data models, which is briefly discussed.

This Recommendation defines a framework of open data in smart cities, in order to promote the sharing of data between different entities in a smart city, fully exploit potentialities of data in smart cities, and ultimately build better and smarter cities. The scope of this Recommendation includes:
– The concept of open data in smart cities;
– The benefits of open data in smart cities;
– The key phases of open data in smart cities;
– The key roles and activities in open data in smart cities;
– The framework of open data in smart cities;
– The general requirements of open data in smart cities.

Recommendation ITU-T Y.4805 specifies a set of requirements for identifier services in smart city applications with a view to ensure that such systems are interoperable and secure. This set of requirements may additionally serve as guidelines for developing new identifier services for smart cities. The Recommendation includes security features for service integrity and data confidentiality. The Recommendation defines a full list of identifier service requirements, including security requirements, for the identifier service.

Recommendation ITU-T Y.4200 defines the requirements for the interoperability of a smart city platform (SCP) and its reference points in order to ensure the correct functioning of city services.
The SCP offers services to a smart city. Interoperability between SCPs allows the increase in the number of services provided and their quality. It enables the provision of better services to citizens, and at the same time ensures maximum efficiency, scalability and simple integration.
By permitting interoperability with other platforms the SCP will also encourage local economic development through innovation and competition.

Recommendation ITU-T Y.4209 addresses the interoperation of the smart port with the smart city, identifying the requirements for the smart port platform to be able to interoperate with smart city platforms and other smart elements in the environment where the port is located, in order to provide enhanced services.Nautical services and other services management provided by the smart port are out of the scope of this Recommendation.Security aspects required by customs and immigration authorities are out of scope of this Recommendation.Interoperation with other ports is out of scope of this Recommendation given the focus of this Recommendation is on interoperation between the smart port and the smart city.Clause 6 provides an overview of the smart port in terms of interoperation with the components of the smart port ecosystem.Clause 7 describes high-level requirements for the smart port platform to enable interoperation with smart city platforms and/or other smart elements.Clause 8 describes the requirements of interoperation between the smart port platform and smart city platforms and/or other smart elements.Clause 9 describes the smart services provided by the smart port platform interoperating with smart city platforms and/or other smart elements.

Recommendation ITU-T Y.4470 establishes artificial intelligence service exposure (AISE) for smart sustainable cities (SSCs), and provides the common characteristics and high-level requirements, reference architecture and relevant common capabilities of AISE. AISE is one of the basic supporting functional entities for SSCs, with which SSC services can use uniform reference points (exposed by AISE) to integrate and access the artificial intelligence (AI) capabilities of AI services (e.g., machine learning services for image recognition, natural language processing services and traffic prediction services). In addition, AISE can collect and open SSC data, and it supports AI services to train and supply AI capabilities in AISE in SSCs.

Rapid advancements in communications and associated technologies has led to the emergence of distributed ecosystems with a large number of devices, applications and use cases requiring open access to trusted services. This open access to trusted services in distributed ecosystems can be provisioned by using the inherent security capabilities and mechanisms already present in the devices and the underlying networks. Recommendation ITU-T Y.3056 provides a concept of bootstrapping of devices and applications by network operators who can share the network security capabilities with users and providers of new devices and services. It describes the requirements to be fulfilled by the entities of the ecosystem such that they may benefit from the bootstrapping capabilities. Based on the requirements, a reference model as well as a functional architecture is provided, which together describe the elements, functions and reference points needed for provisioning of the bootstrapping capabilities. Finally, this Recommendation provides the information flows required to enable the bootstrapping capabilities.