PCF URSP Rule Updates for Multi-Access Data Routing
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Solution Overview
Problem
Current 5G mobile communication systems face challenges in efficiently managing and optimizing the transmission of service data flows across various radio access networks, particularly in selecting the most suitable network paths based on user equipment (UE) capabilities, leading to suboptimal data throughput and service quality.
Innovation Solution
A method and apparatus where a Policy Control Function (PCF) entity updates User Route Selection Policy (URSP) rules based on UE-provided radio capability information, enabling the UE to select the most appropriate network paths for service data flow transmission, utilizing multipath transmission protocols to split and merge data across multiple access networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple access networks are used for data transmission, then data throughput and service quality are improved, but network complexity and difficulty of managing multiple network paths increase
Solution Approach 1:
The patent segments the network path selection process into distinct components: URSP rules define traffic flow characteristics, route selection descriptors specify access network preferences, and the PCF entity manages policy decisions. This segmentation allows complex multi-access network management to be broken down into manageable, standardized components that can be independently configured and controlled.
Solution Approach 2:
The PCF (Policy Control Function) entity acts as an intermediary between the UE and the multiple access networks. It receives URSP rules, determines appropriate route selection descriptors based on UE capabilities and network conditions, and manages the selection of access networks for different service data flows. This intermediary simplifies the overall system by centralizing the decision-making logic for multi-access network management.
2Reliability
If route selection is optimized based on UE radio capability information, then service quality is improved, but the processing overhead and information requirements increase
Solution Approach 1:
The system performs preliminary actions by establishing URSP rules that contain route selection descriptors before actual data transmission occurs. These rules are configured based on UE radio capability information and network conditions, allowing the system to pre-determine optimal access network selections. This preliminary configuration reduces real-time processing overhead during actual data transmission while maintaining high service quality.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting route selection descriptors based on UE radio capability information. The PCF entity modifies selection parameters such as access type preference, network slice selection, and DNN selection according to changing network conditions and UE capabilities. This allows the system to optimize service quality by adapting parameters rather than requiring complex real-time reconfiguration.
3Adaptability or versatility
If URSP rules are dynamically updated based on radio capability information, then adaptability to UE capabilities is improved, but signaling overhead and update frequency increase
Solution Approach 1:
The patent implements dynamics by allowing URSP rules to be updated based on changing UE radio capability information and network conditions. The PCF entity can modify route selection descriptors dynamically, adjusting access network preferences, network slice selections, and other parameters according to current UE capabilities. This dynamic approach enables the system to adapt to varying conditions without requiring complete reconfiguration, balancing adaptability with signaling efficiency.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Disclosed is a by a policy control function (PCF) entity in a wireless communication system, including receiving, from a user equipment (UE), a registration request including radio capability information about the UE through an access and mobility management function (AMF) entity, updating UE route selection policy (URSP) rule information based on the radio capability information about the UE, and transmitting, to the UE, the updated URSP rule information through the AMF entity.