Session Management Element Data Channel Synchronization
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Solution Overview
Problem
The coexistence of 4G and 5G communication systems poses challenges in ensuring reliable interworking, as terminal devices and core network elements often fail to maintain consistent data channel information, leading to communication failures due to unsynchronized data channels.
Innovation Solution
A communication method where a session management network element determines and synchronizes data channels across systems, ensuring consistent data channel information by deleting or indicating the deletion of data channels that are not synchronized, thereby preventing communication failures during interworking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal devices and core network elements operate independently in 4G and 5G systems, then system independence and flexibility are improved, but data channel information consistency deteriorates leading to communication failures
Solution Approach 1:
The patent implements a feedback mechanism where the terminal device sends status information about data channels to the core network element. The core network element receives this feedback and uses it to determine which data channels need synchronization, thereby maintaining consistency without requiring continuous independent operation of both systems.
Solution Approach 2:
The patent performs preliminary synchronization actions by determining data channels that need to be synchronized before actual communication occurs. The core network element proactively identifies inconsistent data channels and initiates synchronization procedures in advance, preventing communication failures before they occur.
2Reliability
If data channel synchronization is performed manually, then information consistency is improved, but processing time and complexity increase
Solution Approach 1:
The patent implements self-service synchronization where the terminal device autonomously sends status information about its data channels to the core network element. The core network element automatically determines which channels need synchronization and performs the synchronization without requiring manual intervention, thereby reducing processing time while maintaining consistency.
3Reliability
If all data channels are synchronized, then information consistency is improved, but system complexity and overhead increase
Solution Approach 1:
The patent extracts and focuses synchronization efforts only on the specific data channels that are actually inconsistent between systems. Instead of synchronizing all data channels, the core network element uses status information to identify and synchronize only the problematic channels, thereby reducing complexity and overhead while maintaining necessary consistency.
Data Source
AI summary
A communication method applicable to different scenarios of interworking between communications systems includes determining, by a session management network element, a first data channel in a first system, where the first data channel is a data channel to be synchronized with a terminal device; and synchronizing, by the session management network element in an interworking procedure for the terminal device from the first system to a second system, at least one of the first data channel or a second data channel that is in the second system and that corresponds to the first data channel.