5G for the Connected World

5Access Control and Mobility Management

Devaki Chandramouli¹, Subramanya Chandrashekar², Jarmo Makinen³, Mikko Säily³ and Sung Hwan Won⁴

¹Nokia, Irving, TX, USA

²Nokia, Bangalore, India

³Nokia, Espoo, Finland

⁴Nokia, Seoul, South Korea

5.1 General Principles

5.1.1 Mobility Management Objectives

The fifth generation (5G) access control and mobility management (MM) framework is intended to be adaptive and flexible, to cater for the disparate 5G mobility requirements coming from very diverse use cases.

Some main drivers for this MM framework are the following:

1. 1) Support of common access control procedures for third generation partnership project (3GPP) and non‐3GPP access. Enable development of a common protocol to perform access control for 3GPP access and non‐3GPP access.
2. 2) Frequent small data transmission. Smart phone applications have the need to send and receive small packets frequently to keep internet protocol (IP) connectivity open. This is referred to as “heart‐beat” or “keep‐alive.” MM state machine should be conducive to support frequent small data transmission without additional signaling overhead.
3. 3) Mobility on demand. Statistics from existing deployments showed that around 70% of the devices camping in cellular network are stationary thus, operators wanted to reduce the cost incurred due to support for MM framework by default resulting in additional cost overhead.
4. 4) Ensuring that the MM state machine is split from session management (SM) state machine (Modular functional ...