PDU Session Configuration Validation in 5G Wireless Systems
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Solution Overview
Problem
In 5G wireless communication systems, managing protocol data unit (PDU) sessions effectively across service areas and time zones is challenging, particularly in ensuring efficient resource allocation and preventing unnecessary or incorrect connections, which affects the performance of mobile communication operators.
Innovation Solution
A method involving a session management function (SMF) and policy and control function (PCF) entities that assess and manage PDU session configurations based on terminal location and time, allowing or releasing sessions accordingly, ensuring alignment with validation rules related to service areas and time zones, thereby optimizing resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If PDU session configuration is allowed without location and time validation, then session establishment speed is improved, but resource allocation efficiency deteriorates due to unnecessary connections
Solution Approach 1:
The system performs preliminary validation by determining whether terminal location and time satisfy validation rules before establishing PDU session connections. The SMF entity checks location information and time information against configured validation rules in advance, preventing unnecessary session establishments and optimizing resource allocation before resources are consumed.
2Loss of energy
If location and time validation is performed for PDU session configuration, then resource allocation efficiency is improved, but session establishment complexity increases
Solution Approach 1:
The terminal device autonomously determines whether its current location and time satisfy the validation rules for PDU session configuration. By enabling the terminal to perform self-validation using locally stored rule information, the system avoids complex network-side validation procedures while maintaining resource allocation efficiency.
3Stability of the object's composition
If PDU session connections are maintained without time-based validation, then service continuity is improved, but system resource waste increases
Solution Approach 1:
The system implements periodic time-based validation for ongoing PDU session connections. The SMF entity periodically checks whether current time information satisfies validation rules associated with active sessions, automatically releasing connections that no longer meet temporal criteria. This periodic verification maintains service continuity for valid sessions while preventing resource waste from stale connections.
Data Source
AI summary
The disclosure relates to a communication method and system for converging a 5G communication system for supporting higher data rates beyond a 4G system with an IoT technology. The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety-related services. Various embodiments of the disclosure may provide a session management method of a terminal in a mobile communication system. A method performed by a SMF entity in a wireless communication system includes receiving, from an AMF entity, a first message for requesting a PDU session configuration, determining whether the configuration of the PDU session is allowed, and transmitting, to the AMF entity, a second message for establishing the PDU session in case that the configuration of the PDU session is allowed.