Gateway Node Packet Buffering During Wireless Handover
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Solution Overview
Problem
During handovers in telecommunication systems, packet loss can occur due to incompatibilities in tunnel creation between access nodes, particularly when processing nodes do not support the necessary communication protocols, leading to disruptions in service quality.
Innovation Solution
A method where a gateway node buffers packets upon determining a handover request involves a first type of handover that requires tunnel establishment, and stops buffering once the handover is executed, ensuring seamless packet transfer between access nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gateway node buffers packets during handover, then packet loss is prevented, but network complexity increases
Solution Approach 1:
The gateway node buffers packets in advance during the handover preparation phase before the actual handover execution. This preliminary action ensures that packets are ready for immediate transmission to the target access node, preventing packet loss without requiring complex real-time coordination during the critical handover moment.
Solution Approach 2:
The gateway node acts as an intermediary between the source and target access nodes during handover. By buffering packets at this intermediate position, the gateway temporarily holds data that needs to be transferred, coordinating the packet delivery across the handover boundary and ensuring reliable transmission without direct complex interactions between access nodes.
2Stability of the object's composition
If the gateway node stops buffering packets upon handover execution, then service continuity is maintained, but packet routing accuracy must be ensured
Solution Approach 1:
The system uses feedback mechanisms to monitor handover status and control packet buffering accordingly. When handover execution is confirmed, the gateway receives feedback to stop buffering and forward accumulated packets to the target access node. This feedback loop ensures both service continuity during buffering and accurate packet routing after handover completion.
Solution Approach 2:
The packet buffering state at the gateway node is dynamic rather than static. The gateway transitions between buffering and non-buffering states based on handover progress. During handover preparation, buffering is active; upon handover execution confirmation, the state changes to stop buffering and forward packets. This dynamic adaptation maintains service continuity while ensuring routing accuracy through state-based control.
Data Source
AI summary
Systems and methods are described for avoiding packet loss during a handover. A handover request may be received at a control element of a first communication network. It may be determined that the handover request comprises a first type of handover request. A gateway node of the first communication network may be instructed to buffer packets for the wireless device based on the determination that the handover request comprises a first type of handover request. And the gateway node may be instructed to stop buffering the packets for the wireless device based on an execution of the requested handover.