Data Forwarding in 5G Conditional Handover
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Solution Overview
Problem
Current 5G communication systems face challenges in efficiently supporting data forwarding during conditional handover and dual stack protocol handover, which can lead to suboptimal performance in mobile communication systems.
Innovation Solution
A method involving a base station that delivers messages for bearer context modification requests and responses between centralized unit-control plane and centralized unit-user plane entities, including information on early forwarding counts, to facilitate effective data forwarding during handover procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data forwarding is performed during conditional handover and dual stack protocol handover, then handover performance is improved, but data transfer efficiency and reliability deteriorate due to suboptimal forwarding mechanisms
Solution Approach 1:
The patent implements preliminary action by establishing a data forwarding session before the actual handover occurs. The source gNB sets up the forwarding session with the target gNB in advance, configuring forwarding parameters and session details before the UE completes the handover procedure. This ensures that data paths are already established and optimized when handover begins, preventing data loss and improving transfer efficiency during the transition.
Solution Approach 2:
The patent employs feedback mechanisms where the source gNB receives status information about data forwarding from the target gNB during the handover process. The source gNB monitors the forwarding session status and can adjust data transmission based on feedback signals, ensuring reliable data transfer and enabling dynamic optimization of the handover process based on real-time conditions.
2Reliability
If complex data forwarding procedures are implemented during handover, then handover reliability is improved, but signaling complexity and processing overhead increase
Solution Approach 1:
The patent merges multiple data forwarding control functions into a single integrated data forwarding session. Instead of managing separate control signals for different forwarding operations, the system establishes one unified session that encompasses all necessary forwarding parameters, session details, and control information. This consolidation reduces signaling complexity while maintaining comprehensive control over the data forwarding process during handover.
Solution Approach 2:
The data forwarding session structure is designed with multi-functionality to handle various handover scenarios and data transmission requirements through a single framework. The session can accommodate different data types, quality of service requirements, and forwarding modes without requiring separate specialized procedures, thereby reducing overall system complexity while improving handover reliability.
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present 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, connected car, health care, digital education, smart retail, security and safety services. According to the disclosure, it is possible to efficiently support data forwarding during conditional handover and dual stack protocol handover.