Page 223 - 5G Basics - Core Network Aspects

Core network aspects 1

7.3.6 Traffic monitoring FE

The traffic monitoring FE monitors the real time traffic load information by receiving information from the
policy and rule translation FE. The traffic monitoring FE sends all traffic load information to the traffic
scheduling and optimization FE for further processing.

7.3.7 Policy and rule translation FE
The policy and rule translation FE connects directly with the S-NICE infrastructure functions, and receives real
time traffic load information and topology information from the S-NICE infrastructure functions.
The policy and rule translation FE provides topology information to the topology collection FE, as well as real
time traffic load information to the traffic monitoring FE. The policy and rule translation FE receives policy
rules from the policy management FE and performs policy rules translation in order to decompose complex
policy rules into straightforward instructions, and sends these instructions to the S-NICE infrastructure
functions.

7.4 Detailed functional architectures of S-NICE infrastructure functions

Figure 7-5 shows the detailed functional architecture of S-NICE infrastructure functions.

Figure 7-5 – Detailed functional architecture of S-NICE infrastructure functions

S-NICE infrastructure functions consist of the following functional entities:
– Data forwarding FE;
– Network status reporting FE.
In general, S-NICE infrastructure functions implement the actions decided by S-NICE controller functions. S-
NICE infrastructure functions provide the capabilities such as forwarding, quality of service (QoS) adjustment
and performance monitoring.
S-NICE infrastructure functions provide the infrastructure information (e.g., network topology information,
flow information, service routing information) to the relevant S-NICE controller functions and the content
and context analysis functions based on requests.
S-NICE infrastructure functions receive policy decisions from S-NICE controller functions and enforce these
policy decisions (e.g., forwarding and processing packet).
S-NICE infrastructure functions receive traffic scheduling rules from S-NICE controller functions and enforce
these traffic scheduling rules (e.g., transport node selection and path selection).
S-NICE infrastructure functions also support isolation and virtualization of different parts of the network.

7.4.1 Data forwarding FE
The data forwarding FE receives instructions from the policy and rule translation FE, and executes these
instructions by forwarding and processing data. By adopting the technology of SDN, the data forwarding FE
of S-NICE infrastructure functions no long needs to compute the route path but merely enforces instructions
received from the S-NICE controller functions.

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