Split-Architecture Data Forwarding for XR PDU Session Handover
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing data forwarding in split architecture environments, particularly in extended reality applications, leading to suboptimal performance and resource utilization.
Innovation Solution
Implementing a mechanism for data forwarding in split architecture environments that adapts to specific criteria such as wireless device configurations, traffic load, and packet sizes, utilizing flexible protocol implementations to optimize data transmission in both user and control planes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data forwarding is implemented in split architecture environments, then resource utilization improves, but system complexity increases
Solution Approach 1:
The patent segments the data forwarding functionality into separate network functions (UPF, SMF, PCF) that can be independently deployed and managed. This allows the system to achieve improved data forwarding efficiency while managing complexity through modular architecture, where each function handles specific tasks rather than a monolithic system handling all operations.
Solution Approach 2:
The patent introduces intermediate network functions such as the SMF (Session Management Function) and PCF (Policy Control Function) that mediate between the UPF and external networks. These intermediaries manage the complexity of data forwarding by handling policy enforcement, session management, and routing decisions, thereby improving overall forwarding efficiency without exposing the full system complexity.
2Adaptability or versatility
If flexible protocol implementations are utilized, then adaptability improves, but device complexity increases
Solution Approach 1:
The patent implements dynamic protocol adaptation mechanisms that allow the network functions to adjust their behavior based on traffic conditions, service requirements, and network state. The PCF can dynamically update policy rules, and the SMF can adapt session management parameters, enabling the system to maintain high adaptability while managing complexity through standardized dynamic configuration interfaces.
Solution Approach 2:
The patent utilizes parameter-based configuration where protocol behavior is controlled through configurable parameters and policies rather than hard-coded logic. This allows flexible protocol implementations to adapt to different scenarios by changing parameters (such as QoS parameters, routing parameters, or policy rules) without modifying the underlying system architecture, thereby maintaining adaptability while controlling implementation complexity.
Data Source
AI summary
A method can include sending, by a base station central unit control plane (BS-CU-CP) to a first base station central unit user plane (BS-CU-UP), a message that includes a parameter indicating that a second/target BS-CU-UP supports protocol data unit (PDU) set content ratio awareness for a PDU session of a wireless device. The method can also include receiving, from the first BS-CU-UP, a response message comprising data forwarding information for the PDU session. The data forwarding information can include a second parameter indicating that the first BS-CU-UP supports PDU set content ratio awareness for the PDU session.