Generally, PCRF gathers information inside the hosting network. PCRF makes intelligent policy decisions for each active subscriber on the network automatically. Almost all operational support systems OSS as well as other sources such as portals in real time support the creation of rules which ultimately help in policy making.
This is a clear sign of a network offering several services, charging rules and quality of service QoS levels. Most subscriber information databases and other specialized functions are accessible to PCRF. In addition to this, information relating to charging systems is also accessible to PCRF in a more scalable and centralized manner. Thanks to the real-time operation of PCRF, it generates an increased strategic importance and a more important potential role than many other legacy strategy engines.
The Policy and Charging Enforcement Function or commonly known as PCEF is the functional entity which includes policy enforcement along with follow based charging functionalities. This functional element is located at the Gateway and it is responsible of providing controller functions in traffic handling and QOS at the Gateway over the user plane, and providing service data flow detection, counting with including online and offline different charging interactions. This will be mainly done by considering the order of precedence for each PCC rule.
Once a packet is matched with a service data flow filter, it is considered as the packet matching process of that particular packet is completed. Therefore, the PCC rule for that filter can be applied without a problem. When considering a certain service data flow, which is controlled by the policy control, PCEF plays a major role.
The service data flow is allowed to pass through the gateway by the PCEF, only when the corresponding gate is accessible. It is based in LDAP. The events can be changes on the existing user data, addition of user data, and so on. When a policy changes for a user or user group in AAA, administrators can send the Radius CoA packets from the AAA server to reinitialize authentication and apply the new policy. Figure 9. If an IP-CAN bearer initiation, modification or termination procedure initiated by the terminal is received for the affected PCC rules while the timer is running, all subsequent steps in the present figure shall not be executed and the steps in figure 9.
If the timer expires and the PCRF still requires additional filter information coming from the UE in order to decide on bearer binding for new PCC rules to be installed, all subsequent steps in the present figure shall not be executed, and further reactions of the PCRF are left unspecified.
For steps 5 and 6: The details associated with the Sp reference point are not specified in this Release. The SPR"s relation to existing subscriber databases is not specified in this Release.
In the intelligent network model, policy is the engine for innovation and differentiation. Its role evolves dramatically from its current usage, expanding both in application and scope. To succeed as digital lifestyle providers, service providers require advanced tactics and tools that enable them to:. With the ability to push policy control beyond the network core to its edge, operators can develop creative strategies to:. Operators can create a service experience that is related to each subscriber based on preferences, location, access network, device type, and network conditions.
They can provide a relevant mobile advertisement, or inform the subscriber when a usage threshold is reached to prevent bill shock. Operators can offer service plans that guarantee bandwidth for certain high-value customers. Operators hold a number of valuable assets — QoS, security, billing relationships, subscriber profiles, context, usage, and device awareness — that can be used to create profitable commercial relationships. They can enable targeted third party advertising.
Operators can offer identity as a service, enabling subscribers to use their network identity as a single-sign-on for third-party applications. Operators can implement creative solutions to manage network congestion.
A device can be moved to the best available network to ensure that the subscriber application usage receives the best available QoS based on current network conditions.
The impact of high bandwidth applications can be minimized by offering subscribers incentives to shift their usage to a different time of day or less congested location. It offers a comprehensive solution that allows a new generation service provider to offer multiple use cases that allows them to better control their services and align their revenue with their resources.
PCRF Server provides a flexible and scalable software platform for the development and management of any type of policy solutions specialized for telecom industry. As operators transition to LTE, policy will play a critical network role and become a strategic component in the quest to manage and monetize LTE networks. Virtually every LTE session and subscriber will need to be managed or charged in some fashion, which will require the involvement of a policy server in each transaction.
From prioritization to personalized service plans, the coupling of LTE with policy promises to help resolve key LTE operational and business challenges and support a new generation of revenue generating services. Equipped with intelligent policy management, operators can shape and manage network demand, revenue contributions from differing classes of customers, capital expenditures, and overall growth of the LTE, mobile broadband market.
In doing so, service providers gain greater control in shaping the customer experience and network resource utilization. Thanks for this very interesting post.
Quick question for you:. If so, can you pls. PCRF Input? User Location eCGI? ADC rules to be created? Thanks for this blog. It really provides awesome information to all readers. The CC value for charging should not be changed. Netmanias USA : 36th Ave. All rights reserved. English Korean About Us. HFR, Inc. Download PDF File. List of Contributors. Learn more. Ask Question. Asked 2 years, 10 months ago. Active 1 year, 11 months ago. Viewed 1k times. Improve this question. Tavakoli Tavakoli 1, 2 2 gold badges 14 14 silver badges 29 29 bronze badges.
Add a comment. Active Oldest Votes. Improve this answer. Mick Mick The enforcement is done in the PCEF The report to the PCRF shall include the same information for solicited and unsolicited application reporting that is whether the report is for start or stop, the detected Application Identifier and, if deducible, the service data flow descriptions for the application user plane traffic.
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