Service Function Node Resource Allocation Transfer
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Solution Overview
Problem
In mobile communication networks, especially during handovers, existing technologies face challenges in efficiently transferring resource allocations for wireless devices, leading to sub-optimal resource usage and increased latency due to unnecessary re-establishment of connections and data retransmissions.
Innovation Solution
A method and service function node that monitor and store session parameters of uplink/downlink packets, transmit reset signals to user service nodes to reset transport layer sessions, and transfer connection information to assist seamless resource allocation transfer between source and target sites, minimizing network resource wastage and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource allocation transfer is performed during handover without resetting transport layer sessions, then connection continuity is maintained, but network resources are wasted due to unnecessary data retransmissions and sub-optimal resource usage
Solution Approach 1:
The service function node performs preliminary actions by monitoring packets and storing session parameters before the handover occurs. This allows the node to proactively prepare reset signals and connection information, enabling a smooth transition that maintains connection continuity while preventing resource waste through targeted session resets at the appropriate time
Solution Approach 2:
The service function node implements feedback mechanisms by monitoring uplink and downlink packets between the wireless device and user service nodes. This monitoring provides real-time information about active sessions and data flow patterns, allowing the system to make informed decisions about when and how to reset transport layer sessions to optimize resource usage during handover
2Loss of energy
If transport layer sessions are reset during handover, then network resource efficiency is improved, but handover latency increases due to session re-establishment
Solution Approach 1:
Connection information including session parameters is prepared and stored in advance before handover occurs. This preliminary preparation allows the target service function node to quickly establish new sessions without full re-establishment delays, reducing handover latency while still enabling efficient resource allocation through controlled session resets
Solution Approach 2:
The system dynamically adjusts the timing and scope of session resets based on monitored packet patterns and session states. By adaptively determining which sessions require resetting and when to perform the reset, the system optimizes the balance between resource efficiency gains and latency minimization for each specific handover scenario
3Loss of energy
If all transport layer sessions are reset during handover, then resource allocation is optimized, but connection stability deteriorates due to unnecessary session interruptions
Solution Approach 1:
The service function node applies different treatments to different sessions based on local characteristics observed through packet monitoring. Sessions that show signs of inefficiency or conflict with handover are selectively reset, while other sessions continue uninterrupted. This localized approach optimizes resource allocation for specific problematic sessions without destabilizing the overall connection
Solution Approach 2:
The system changes parameters of specific transport layer sessions based on monitored performance indicators and handover context. By adjusting session parameters or selectively resetting only those sessions where it improves overall efficiency, the system achieves better resource allocation while preserving the stability of sessions that do not require intervention
Data Source
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AI summary
It is presented a method for assisting a resource allocation transfer of a wireless device from a source site of a mobile communication network to a target site of the mobile communication network, The method is performed in a service function node at the source site and comprises the steps of: receiving an indication of resource allocation transfer of the wireless device; and transmitting a reset signal to a user service node at the source site, the reset signal commanding the user service node to reset its transport layer session with the wireless device.