Handover Data Integrity in Wireless Networks
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Solution Overview
Problem
Existing wireless data communication systems face challenges in maintaining data integrity during mobile station handovers, particularly due to signal interference and increased distance, which can lead to dropped data and significant network resource utilization.
Innovation Solution
A method and apparatus that identifies a target access service network (ASN) for handover, determines the data integrity capability of the target ASN, and uses either direct data delivery or multi-unicasting to ensure seamless data transfer, optimizing buffer management and reducing resource reliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heavy-handed data integrity techniques are used during handover, then data integrity is improved, but network memory and processing resources are significantly consumed
Solution Approach 1:
The patent changes the parameter of data delivery mode based on target ASN capability. When direct data delivery is supported, it uses that mode to reduce resource consumption while maintaining data integrity. When direct delivery is not supported, it falls back to multi-unicasting. This parameter adaptation resolves the contradiction by selecting the most efficient data integrity technique available.
Solution Approach 2:
The system dynamically determines the data delivery mode based on real-time capability assessment of the target ASN. The handover process adapts its data integrity mechanism based on the target network's capabilities, transitioning between direct delivery and multi-unicasting as needed. This dynamic adaptation allows optimal resource utilization while maintaining reliability.
2Quantity of substance
If direct data delivery is implemented during handover, then resource usage is reduced, but data integrity capability requirements increase
Solution Approach 1:
The patent implements a capability assessment mechanism where the target ASN provides feedback about its data integrity capabilities during the handover preparation phase. Based on this feedback, the serving ASN determines the appropriate data delivery mode. This feedback mechanism ensures that direct data delivery is only used when the target ASN can support it, maintaining both resource efficiency and capability compatibility.
Solution Approach 2:
The system applies partial action by using direct data delivery only when necessary and supported, rather than always using the most resource-intensive method. When direct delivery capability is not available, it partially adopts the alternative multi-unicasting approach. This selective application optimizes resource usage while adapting to varying network capabilities.
3Reliability
If multi-unicasting is used during handover, then data integrity is maintained without requiring direct delivery capability, but network processing complexity increases
Solution Approach 1:
The patent changes the data delivery parameter based on capability assessment. When direct data delivery is not supported by the target ASN, the system switches to multi-unicasting as the alternative data integrity mechanism. This parameter change allows the system to maintain data integrity while adapting to the target network's processing capabilities and complexity constraints.
Data Source
AI summary
A method and apparatus for handover data integrity of a mobile station in a wireless data network with a plurality of wireless network service areas. The method and apparatus includes initiating handover by a mobile station, identifying a target access service network (ASN) for handover from a serving ASN. When the target ASN is identified, receive a data integrity capability from the target ASN, and determine whether a direct data delivery mode is available as a data integrity mode. When a direct data delivery mode is available, direct data delivery is performed with the data associated with the service flow from the serving ASN to the target ASN.