What is PCRF in telecom?
Emily Wong What is PCRF in telecom?
Policy and Charging Rules Function (PCRF) is the software node designated in real-time to determine policy rules in a multimedia network. As a policy tool, the PCRF plays a central role in next-generation networks.
What is the role of PCRF in LTE?
The PCRF provides the QoS authorization (QoS class identifier [QCI] and bit rates) that decides how a certain data flow will be treated in the PCEF and ensures that this is in accordance with the user’s subscription profile. PCRF provides service management and control of the 4G service.
Why is PCRF required?
PCRF plays a key role in VoLTE as a mediator of network resources for the IP Multimedia Systems network for establishing the calls and allocating the requested bandwidth to the call bearer with configured attributes. This enables an operator to offer differentiated voice services to their user(s) by charging a premium.
What is PCRF and PCEF?
PCRF and PCEF in LTE | Functions of PCRF and PCEF in LTE. PCRF stands for Policy and Charging Rules Function and PCEF stands for Policy and Charging Enforcement Function.
What is the interface between HSS and PCRF?
Diameter Interfaces
| Interface | Network location |
|---|---|
| S6d interface | Between SGSN and HSS, Subscription and Authentication Data |
| S7c interface | Transfer of (QoS) policy information from PCRF to the S-GW. |
| S9 interface | Between PCRF in the HPLMN (H PCRF) and a PCRF in the VPLMN (V PCRF) |
| S13 and S13′ interface | Between EIR and MME/SGSN |
What are PCC rules in Pcrf?
When an EPS session is established or modified, PCRF determines a PCC rule for each Service Data Flow (SDF) based on the operator’s policy (e.g. QoS policy, gate status, charging methods, etc.). PCEF (P-GW) detects an SDF, and applies a PCC rule that is specific to the particular SDF to the user packets in it.
What is PCC rule in Pcrf?
PCC Rules 3GPP TS 29.212 [1] defines PCC rules as follows: Purpose: The purpose of the PCC rule is to detect a packet belonging to a SDF, identify the service the SDF contributes to, provide applicable charging parameters for the SDF, and provide policy control for the SDF.
What is SAE GW?
System Architecture Evolution (SAE) is the core network architecture of mobile communications protocol group 3GPP’s LTE wireless communication standard.
What is 4G HSS?
Home Subscriber Server. The HSS is the master database for a given subscriber, acting as a central repository of information for network nodes. Subscriber related information held by the HSS includes user identification, security, location and subscription profile. The HSS is a functional element of LTE and IMS.
What is UE identity?
Globally Unique Temporary Identity (GUTI) GUTI is allocated to the UE by the MME and has two components GUMMEI (Globally Unique MME ID) and the M-TMSI (MME-TMSI). The GUMMEI identifies the MME.
What is a charging control node CCN?
Charging Control Node – CCN A charging control node is a signaling control point used in a communication network (such as a 3G mobile communication system) that can receive and process, track, and rate (assign a value to) packet data service and content usage requests.
How does a simple charge controller work?
Simple charge controllers stop charging a battery when they exceed a set high voltage level, and re-enable charging when battery voltage drops back below that level.
What is an integrated charge controller?
Integrated charge controller circuitry Circuitry that functions as a charge regulator controller may consist of several electrical components, or may be encapsulated in a single microchip, an integrated circuit (IC) usually called a charge controller IC or charge control IC.
What is a charge controller or charge regulator?
The terms “charge controller” or “charge regulator” may refer to either a stand-alone device, or to control circuitry integrated within a battery pack, battery-powered device, or battery charger.
