The present document provides a summary of each and every 3GPP Release 16 Feature, and more generally of all Work Items for which a summary has been agreed to be provided. These summaries are based on the inputs issued by the Work Item Rapporteurs, sometimes modified by the Work Plan manager to ensure overall consistency of this document. The original inputs can be retrieved as temporary document (tdoc). The original tdoc number is provided just below the table of each clause. The present document presents the "initial state" of the Features introduced in Release 16, i.e. as they are by the time of publication of this document. Each Feature is subject to be later modified or enhanced, over several years, by the means of Change Requests (CRs). To further outline a feature at a given time, it is recommended to retrieve all the CRs which relate to the given Feature, as explained in Annex C. As a first approach, the list of all the Change Requests related to a Work Item can be retrieved by selecting "TSG Status = Approved" in the Work Item's page of the 3GPP Portal at: https://­portal.3gpp.org/­ChangeRequests.aspx?q=1&workitem= [6-digit identifier of the Work Item, separated by a coma if several Work Items] E.g. for "NR support for high speed train scenario": the table at the beginning of its section indicates that the corresponding Work Items have the numbers 840192 and 840292. So, all the CRs related to this Feature are retrieved by selecting "TSG Status = Approved" in https://­portal.3gpp.org/­ChangeRequests.aspx?q=1&workitem=840192,840292

The present document provides a summary of each Release 16 Feature or, whenever needed, of each significant Work Item. The information provided in the present document is limited to an overview of each Feature, explaining briefly its purpose and the main lines of the system's behaviour to execute the Feature. More information is available by consulting the 3GPP Portal web site, as explained in "Annex C: Process to get further information" and in the introduction section.

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.

• References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.

Release 16 can be seen as a set of independent improvements of the 5G System, introduced in Rel-15 and described in TR 21.915. As such, several references are made in the present document to pre-Rel-16 Features and to 5G reference points and network functions. Other Rel-16 enhancements are for Features that have been introduced several Releases ago, including those related to Mission Critical, or to Conversational services. The main Rel-16 radio enhancements concern the 5G (NR) radio interface, but also the 4G (LTE) radio, and improving the cooperation between them. For the 5G radio, the end user bit rate has been increased by introducing several configurations of Carrier Aggregations and by adding 256QAM. Other radio enhancements include the NR-based access to unlicensed spectrum, and some enhancements in the fields of mobility and UE Power Saving. These radio enhancements are presented in section 19. As for the system-wide features, presented in sections 5 to 18, the overall trend in Rel-16 is to make the 3GPP 5G System (5GS) a communication-enabling platform suitable for a wide range of industries ("verticals"), such as e.g. transportation (autonomous driving V2X, Railways, Maritime), automated factories, healthcare, public safety and many more. In this respect, the versatility and reliability of the 5GS has been further increased to make it industry-grade compatible, with enhancements to Ultra-Reliable Low Latency Communications (URLLC), Network Slicing, Edge Computing, Cellular IoT (Internet of Things), Non-Public Networks, Positioning Services and LAN-type services. In addition, the use of 5G as an underlying communication network (i.e. to be used transparently by applications external to the network) has been enhanced, mostly under the work on "Northbound APIs". Besides all these industrial aspects, other Rel-16 enhancements cover the coexistence of 5G with non-3GPP systems, entertainment (e.g. streaming and media distribution) and network optimisations (e.g. user identity).