Page 1378 - 5G Basics - Core Network Aspects

3 Signalling aspects

C-REQ Configuration Request

C-RSP Configuration Response
CHS-REQ Chain Service Request

CHS-RSP Chain Service Response
COA Change of Authorization

CS-REQ Create Service Request
CS-RSP Create Service Response
DS-REQ Delete Service Request

DS-RSP Delete Service Response
MAC Media Access Control

NMS Network Management System
QoS Quality of Service
RADIUS Remote Authentication Dial In User Service

RS-REQ Resource Status Request
RS-RSP Resource Status Response

SDK Software Development Kit
SDN Software-Defined Networking

SNMP Simple Network Management Protocol
TLV Type Length Value

UCHS-REQ Unchain Service Request
UCHS-RSP Unchain Service Response
US-REQ Update Service Request

US-RSP Update Service Response
VPN Virtual Private Network

5 Conventions

In this Recommendation:
The keywords "is required to" indicate a requirement which must be strictly followed and from which no
deviation is permitted, if conformance to this Recommendation is to be claimed.
The keywords "is recommended" indicate a requirement which is recommended but which is not absolutely
required. Thus, this requirement need not be present to claim conformance.
The keywords "can optionally" indicate an optional requirement which is permissible, without implying any
sense of being recommended. This term is not intended to imply that the vendor's implementation must
provide the option, and the feature can be optionally enabled by the network operator/service provider.
Rather, it means the vendor may optionally provide the feature and still claim conformance with this
Recommendation.

6 Architecture for the BNG with flexible network service combination
The BNG is divided into three layers, as depicted in Figure 1. The BNG is responsible for packet forwarding
and policy enforcing, and keeps only the stable functions, such as routing process. The service platform acts
as an intermediate layer between the network services and the BNG. The service platform provides

1368