Handover Data Forwarding Path Selection in 5G Wireless Systems
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting handover processes, particularly in 5G systems, which can lead to data loss and interruptions in service continuity.
Innovation Solution
A method for supporting handover in wireless communication systems involves determining whether a direct data forwarding path is available, deciding on the appropriate data forwarding scheme, and allocating data forwarding tunnel information between source and target base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If handover is performed in existing wireless communication systems, then service continuity is maintained, but data loss occurs and service interruptions happen
Solution Approach 1:
The patent establishes data forwarding paths and tunnel information before the handover is executed. The source base station pre-configures forwarding tunnels and the target base station pre-allocates resources, ensuring that data can be immediately forwarded without interruption or loss when handover occurs.
Solution Approach 2:
The patent introduces a core network entity as an intermediary to coordinate the handover process. This intermediary manages the establishment of forwarding paths between source and target base stations, ensuring seamless data transmission during handover by routing data through appropriate tunnels.
2Productivity
If direct data forwarding path is established, then data transmission efficiency is improved, but system complexity increases
Solution Approach 1:
The patent segments the data forwarding process into distinct components: direct forwarding paths for efficient transmission and indirect forwarding paths as fallback options. The core network determines which path to use based on availability, allowing the system to optimize for efficiency when possible while maintaining simplicity through standardized procedures.
Solution Approach 2:
The patent changes the forwarding path parameter dynamically - using direct paths when available for high efficiency, and switching to indirect paths through the core network when direct paths are unavailable. This parameter change allows the system to adapt to different conditions without increasing inherent system complexity.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention provides a method for supporting handover, comprising the steps of: informing, by a source base station, a core network whether a direct data forwarding path is available; deciding, by the core network, whether to use direct data forwarding or indirect data forwarding; informing, by the core network, a target base station of information about the direct data forwarding or indirect data forwarding; allocating, by the target base station, data forwarding tunnel information, the target base station allocating the data forwarding tunnel information according to the received information about the direct data forwarding or indirect data forwarding; transmitting, by the target base station, the allocated data forwarding tunnel information to the core network; and informing, by the core network, the source base station of the data forwarding tunnel information. With the present invention, different data forwarding methods are supported to prevent data loss and ensure service continuity.