3GPP main area of work in Release 15 is the definition of the initial phase of 5G, the Fifth Generation of Mobile Communications, also referred to as "5GS" ("the 5G System").
5G is to be defined in at least 2 phases, the phase 1 being specified in Release 15, as summarised in the present document. Subsequent phase(s) will be specified in future Release(s).
Beside 5G Phase 1, Release 15 also specifies, among other Features: further enhancements on Critical Communications (including Ultra Reliable Low Latency Communication and Highly Reliable Low Latency Communication), Machine-Type of Communications (MTC) and Internet of Things (IoT), Vehicle-related Communications (V2X), Mission Critical (MC), and features related to WLAN and unlicensed spectrum.
The continuation of the present document provides an exhaustive view of all the items specified in Release 15 by 3GPP.