HOME UNIT 1 UNIT 2 UNIT 3 UNIT 4 UNIT 5 Challenges Introduced by 5G in IoT Middleware Technological Requirements of 5G Systems 5G is a promising technology that has been considered the next step for a long- term worldwide evolution of mobile communication. 5G is intended to be the major component of the networked or IoT/M2M-oriented society, and will help to real- ize the IoT vision toward unlimited access to information and sharing of pervasive data (anywhere and anytime) for anyone (human-centric approach) and anything (device/things-oriented approach) [ 27 ]. The aim of 5G is not only about mobile connectivity for people, but also mobile and ubiquitous connectivity for any kind of computing device and application that may benefit from being connected to the Internet (IoT) and also to the Web (WoT—Web of Things). In order to enable massive connectivity for a very wide range of heterogen