Policy Control Function Node for Seamless UE Policy Enforcement
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Solution Overview
Problem
Current 5G communication systems lack effective methods for managing user equipment (UE) policies, particularly in enforcing policies without disrupting application services and handling service disconnections, while also considering user preferences and operating system identifiers for traffic descriptor selection.
Innovation Solution
A device and method for transferring and enforcing UE policies, including access network discovery & selection policy and user equipment route selection policy, using a policy control function node that determines policy transmission and receives operation results, ensuring seamless policy enforcement without service disruption and accommodating user preferences and operating system identifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE policy is enforced by traditional methods, then policy control is achieved, but application service disconnection occurs
Solution Approach 1:
The patent segments the UE policy enforcement process into multiple independent policy sections (PS), where each PS can be managed separately. This allows the system to enforce specific policy changes without requiring complete service interruption, as only affected policy sections are updated while others continue to operate normally.
Solution Approach 2:
The patent introduces dynamic policy enforcement mechanisms that allow the UE to adapt policy application based on current service states. The system can dynamically determine whether to enforce a policy change immediately or defer it based on active services, enabling continuous service operation during policy transitions.
2Adaptability or versatility
If UE policy is updated to improve control, then operator control is enhanced, but service disruption increases
Solution Approach 1:
The patent implements preliminary action by notifying the UE of upcoming policy changes in advance before actual enforcement. This allows the UE to prepare for policy changes while maintaining current service operations, and the policy is only enforced after a predetermined time has elapsed, ensuring service continuity during the transition period.
Solution Approach 2:
The system dynamically adjusts the timing and manner of policy enforcement based on current service conditions. The UE can evaluate active services and determine optimal enforcement timing, allowing operator control flexibility while maintaining service continuity through adaptive enforcement strategies.
3Adaptability or versatility
If comprehensive UE policy management is implemented, then policy coverage is improved, but system complexity increases
Solution Approach 1:
The patent divides comprehensive UE policy management into discrete, manageable policy sections that can be independently configured, transmitted, and enforced. Each policy section represents a specific aspect of UE behavior control, allowing the system to achieve comprehensive coverage through modular composition rather than monolithic complexity.
Solution Approach 2:
The patent creates a universal policy management framework that handles multiple types of UE policies (access network selection, route selection, QoS parameters) through a single standardized mechanism. The policy section structure and enforcement procedures are universally applicable across different policy types, reducing overall system complexity despite comprehensive coverage.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An operating method of a policy control function (PCF) node in a wireless communication system, according to various embodiments of the present disclosure, comprises the steps of: determining, on the basis of preset conditions, whether to transmit a user equipment (UE) policy; transmitting a message including the UE policy; and receiving information related to a result of a policy section (PS) operation performed by a UE on the basis of the UE policy.