Contents
Preface ............................................ xi
Chapter 1. NG-RAN Network – Functional Architecture ............ 1
1.1. Functional architecture NSA/SA .......................... 1
1.1.1. Option 3 ..................................... 4
1.1.2. Option 4 ..................................... 5
1.1.3. Option 7 ..................................... 6
1.2. Description of the NG-RAN network ....................... 7
1.2.1. The NG-RAN .................................. 8
1.2.2. AMF (Access management and Mobility Function) ............. 10
1.2.3. SMF (Session Management Function) .................... 11
1.2.4. UPF (User Plane Function) .......................... 12
1.3. Functional separation between the NG-RAN radio interface and the 5G
core network ....................................... 13
1.3.1. Mobile identities ................................ 13
1.3.2. Mobile mobility ................................. 17
1.4. Scheduling and QoS ................................. 19
1.4.1. Scheduling .................................... 19
1.4.2. Support for quality of service on radio link .................. 21
1.5. Security architecture ................................. 24
1.6. Network slicing ................................... 26
1.7. References ...................................... 28
Chapter 2. NG-RAN Network – Protocol Architecture .............. 31
2.1. The protocol architecture of the radio interface .................. 31
2.1.1. Protocol stack on the Uu interface ....................... 32
2.1.2. The protocol architecture on the Xn interface ................ 35
2.1.3. Protocol architecture on the F1 interface ................... 37
2.1.4. Protocol stack on the NG interface ...................... 42
