SMF UPF Capacity Control for 6G Traffic Management
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Solution Overview
Problem
The growing need for efficient traffic handling in 6G wireless communication systems, particularly due to increasing user equipment (UE) data volumes and the challenges of network bandwidth and traffic requirements, is not adequately addressed by existing technologies.
Innovation Solution
A method and apparatus for a session management function (SMF) to configure capacity information of a user plane function (UPF) based on information regarding control message processing capability or resource status, and to control the flow of control messages to the UPF accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If control messages are transmitted freely to UPF without capacity consideration, then communication functionality is maintained, but network bandwidth is wasted and energy consumption increases
Solution Approach 1:
The SMF performs preliminary configuration of capacity information for the UPF before control message transmission. This includes pre-configuring maximum message rates, buffer sizes, and capacity thresholds. By preparing these parameters in advance, the system can make immediate capacity-based decisions without real-time computation, reducing energy consumption while maintaining reliable communication through pre-established capacity boundaries.
Solution Approach 2:
The system implements feedback mechanisms where the SMF monitors UPF capacity status and adjusts control message transmission accordingly. When the UPF approaches capacity thresholds, the SMF receives feedback and modifies transmission rates or prioritizes messages. This closed-loop control prevents bandwidth waste and energy consumption while ensuring communication reliability through adaptive adjustment.
2Productivity
If all control messages are transmitted to UPF, then complete control functionality is achieved, but network bandwidth is inefficiently utilized
Solution Approach 1:
The patent applies local quality by differentiating control message transmission based on UPF-specific capacity characteristics. Each UPF receives customized capacity information tailored to its specific buffer size, processing capability, and current load status. This localized approach ensures that each UPF handles only the appropriate quantity of control messages for its capacity, improving overall traffic handling efficiency while optimizing network bandwidth utilization across the network.
Solution Approach 2:
The system implements partial action by transmitting only the necessary portion of control messages to the UPF based on its capacity status. When capacity is limited, the SMF prioritizes critical control messages and omits or delays non-urgent ones. This selective transmission approach maintains essential control functionality while significantly reducing network bandwidth consumption compared to transmitting all control messages indiscriminately.
3Reliability
If UPF processes all incoming control messages, then control functionality is complete, but processing capability is overwhelmed and performance degrades
Solution Approach 1:
The patent implements dynamic capacity management where the SMF continuously adjusts control message transmission rates based on real-time UPF processing status. When the UPF is under heavy load, the SMF dynamically reduces transmission rate or prioritizes messages. When capacity is available, transmission rate increases. This dynamic adaptation ensures control processing reliability is maintained under all load conditions while maximizing processing throughput when capacity permits.
Data Source
AI summary
A 5th-generation (5G) or 6th-generation (6G) communication system for supporting higher data rates after the 4th-generation (4G) communication system, such as long term evolution (LTE) is provided. A method performed by a session management function (SMF) in a wireless communication system is provided. The method includes configuring capacity information of a user plane function (UPF) based on at least one of information regarding a control message processing capability of the UPF or resource status information regarding control message processing, and controlling a flow of control messages to be transmitted to the UPF based on the capacity information of the UPF.