Source Network Device Data Forwarding for Seamless Handover
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Solution Overview
Problem
In mobile communication processing, handover failures occur due to challenges in controlling data transmission between source and target network devices, especially in scenarios with multiple handover events.
Innovation Solution
A data transmission method is introduced where a source network device forwards data to a target network device upon successful handover, and the target network device receives this data, enabling seamless data continuity during handover processes across various communication systems like GSM, LTE, and 5G.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device stops data transmission with the source network device upon receiving a handover command, then the handover process can be executed, but data transmission interruption occurs during handover
Solution Approach 1:
The source network device acts as an intermediary by receiving data from the core network and forwarding it to the target network device during handover. This mediator approach allows data to flow through the source network device even when the terminal device stops transmission, preventing data loss and ensuring continuous data delivery to the terminal device after handover completion
Solution Approach 2:
The source network device performs preliminary actions by receiving and buffering data from the core network before the handover is complete. By proactively acquiring data in advance and forwarding it to the target network device, the system ensures that data is ready for immediate transmission to the terminal device once handover succeeds, eliminating transmission interruptions
2Adaptability or versatility
If the source network device forwards data to multiple target network devices, then data transmission coverage is improved, but device complexity increases
Solution Approach 1:
The source network device is designed with multi-functionality to handle multiple target network devices simultaneously. It can receive data from the core network and dynamically forward it to one or multiple target network devices based on handover scenarios, making the system adaptable to various handover situations (single target, multiple targets, sequential handovers) without requiring fundamentally different architectures
Data Source
AI summary
Provided are a data transmission method, a terminal device, a network device, a chip, a computer readable storage medium, a computer program product and a computer program. The data transmission method includes: when it is determined that a terminal device is successfully handed over to a target network device, forwarding data to the target network device.