er require taking into consideration the beam tracking procedures in the terminal side. On the other hand, 5G has introduced different forms of multi-connectivity which would allow skipping this step, for example, the broadcast information for the idle link can be delivered over one of the active links where UE is able to receive. With different configuration of multi-connectivity, broadcast information for the idle link might be delivered in different ways. In the case of control-plane/user-plane decoupling, detection of cells providing the user-plane needs to be taken into account. Note that the periodic- ity of certain common signals/channels for access may vary over different links. 3. Random access procedure: The delay due to the use of random access (physical chan- nel) preamble for transmission of small payloads needs to be considered. Furthermore, Ivi Introduction and Background in case of mMTC traffic, the delay due to possible collision of random access preambles and their retransmissions must be taken into consideration. Uplink synchronization: During the NR feasibility studies, it was observed that some candidate waveforms may relax the requirements for uplink synchronization by allow- ing asynchronous uplink access. In certain cases, the delay due to capability negotiation procedure and the associated HARQ retransmissions can also avoided, if the UE capa- bility information is already available at the base station. In the case of control-plane/ user-plane decoupling in two or more cells, the information about the capabilities of user-plane and control-plane needs to be obtained prior to the uplink access. 5. RRC connection establishment/reconfiguration + HARQ retransmissions: In some new 5G multi-connectivity scenarios, this step is considered as complete when the RRC con- nection is established with the target radio access network. When data bearers are split/ aggregated at the core network, the RRC connection setup is required across all of those radio links. 6. Authorization and authentication/key