Session Management Element Offloading Insertion Strategy
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Solution Overview
Problem
Current network architectures face challenges in efficiently offloading data flows across 3GPP and non-3GPP access technologies, particularly when a terminal accesses a data network using both technologies, as existing methods struggle to determine the appropriate interface for inserting an uplink classifier device, leading to redundant processing and inefficiencies.
Innovation Solution
A data transmission channel processing method where a session management network element determines the need for offloading a PDU session data flow and inserts an offloading device into the corresponding data transmission channel in either the 3GPP or non-3GPP access technology, or both, based on connection management states and data flow characteristics, thereby optimizing data routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the SMF entity determines to insert the UL CL device into the N3 interface between access network device and UPF entity, then data flow offloading is supported, but the SMF entity does not know how to insert the UL CL device when the terminal accesses the DN by using both 3GPP and non-3GPP access technologies
Solution Approach 1:
The patent introduces an intermediary mechanism where the SMF entity interacts with access network devices through standardized interfaces to determine the appropriate insertion point for the UL CL device. The SMF entity receives access technology type information from access network devices and uses this information to make intelligent decisions about where to insert the offloading device, rather than attempting to directly manage both 3GPP and non-3GPP access networks simultaneously.
Solution Approach 2:
The patent changes the decision-making parameters by introducing access technology type as a key factor in determining UL CL device insertion. Instead of using a fixed insertion rule, the system dynamically adjusts the insertion strategy based on the detected access technology type (3GPP or non-3GPP), allowing the SMF entity to adapt its behavior to the specific access scenario.
2Productivity
If the UL CL device is inserted into both 3GPP and non-3GPP data transmission channels, then data flow offloading is optimized, but redundant processing occurs when the terminal is in idle state in one access technology
Solution Approach 1:
The patent implements a dynamic insertion strategy where the UL CL device insertion is adjusted based on the terminal's real-time connection state. When the terminal is in idle state in one access technology, the system dynamically removes or deactivates the UL CL device insertion for that specific access channel, preventing redundant processing while maintaining offloading capability when the terminal is actively connected.
Solution Approach 2:
The patent applies local quality by treating the 3GPP and non-3GPP data transmission channels differently based on the terminal's connection state in each access technology. Instead of applying a uniform insertion rule to both channels, the system selectively inserts the UL CL device only into the channels where the terminal is actively connected, optimizing performance for each local context.
Data Source
Figure 1~2B
Figure 2C~2D
Figure 2E~2F
AI summary
Embodiments of this application provide a data transmission channel processing method, and an apparatus and a system that are based on the method. The method includes: determining, by a session management network element, that a data flow of a packet data unit PDU session of a terminal needs to be offloaded, where the PDU session is established by using a 3rd generation partnership project 3GPP access technology and a non-3GPP access technology; and determining, by the session management network element, to insert an offloading device into a data path of the PDU session, where the data path of the PDU session includes a data transmission channel in the 3GPP access technology and/or a data transmission channel in the non-3GPP access technology. According to the solutions in the embodiments of this application, the data flow can be effectively processed, and the offloading device is inserted into a corresponding data flow transmission channel, thereby reducing redundant processing processes that are possibly caused by insertion of the offloading device.