Conditional Handover UE Matching for Secondary Node Resource Reservation
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Solution Overview
Problem
In conditional handover (CHO) processes, target Secondary Nodes (SN) lack the means to identify handover requests as relating to the same User Equipment (UE), leading to inefficient radio resource reservation, especially in scenarios with multiple preparations.
Innovation Solution
An apparatus and method that enables target SNs to determine, based on unique and temporary UE identifications, that multiple requests concern the same UE, optimizing radio resource reservation by sharing UE identifications during CHO preparations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the target SN reserves radio resources for each handover request separately, then resource reservation is simplified, but radio resource efficiency deteriorates due to duplicate reservations for the same UE
Solution Approach 1:
The target SN uses the UE identification included in handover requests as feedback to determine whether multiple requests concern the same UE. By comparing UE identifiers from different master nodes, the target SN can identify duplicate reservations and optimize resource allocation accordingly, resolving the contradiction between reservation simplicity and resource efficiency.
2Loss of energy
If the target SN identifies multiple requests for the same UE, then radio resource efficiency improves, but device complexity increases due to additional identification and comparison mechanisms
Solution Approach 1:
The UE identification acts as an intermediary element that enables the target SN to correlate handover requests from different master nodes. This identifier serves as a key that simplifies the matching process, allowing the target SN to efficiently determine whether requests concern the same UE without requiring complex analysis mechanisms.
3Productivity
If UE identification is included in handover requests, then the target SN can optimize resource allocation, but information overhead increases
Solution Approach 1:
The patent applies partial action by including UE identification only in specific handover request messages where it is needed for resource optimization. The identification is selectively transmitted based on the handover scenario, avoiding unnecessary information overhead in cases where resource optimization is not required or where the target SN can already identify the UE through existing mechanisms.
Data Source
AI summary
An apparatus comprising means for receiving requests from a plurality of master nodes to be included added as a secondary node into as part of a conditional handover process for a user equipment; means for obtaining, from each of said requests, an identification of the user equipment involved in the conditional handover process; and means for determining, based on said identifications of the user equipment, that a plurality of said requests concern the same user equipment.