Chapter 16

Initial Access


This chapter provides a detailed description of NR cell search, system-information delivery, and random access. Especially, the NR-specific features related to beam forming and ultra-lean transmission are highlighted.


Cell search; SS block; PSS; SSS; PBCH; system information; random access; preamble transmission

Within NR, the initial-access functionality includes:

  • • The functions and procedures by which a device initially finds a cell when entering the coverage area of a system;
  • • The functions and procedures by which a device in idle/inactive state accesses the network, typically to request the set-up of a connection and commonly referred to as random access.

To quite a large extent, similar functionality ...

Get 5G NR: The Next Generation Wireless Access Technology now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.