PSCell Handover Delay Requirements for 3GPP Rel-16
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Solution Overview
Problem
Current wireless communication systems lack specified Radio Resource Management (RRM) requirements, particularly delay requirements, for handover procedures involving Primary Secondary Cells (PSCells), which affects the efficiency and accuracy of handover processes in 3GPP Rel-16 networks.
Innovation Solution
The method involves determining and obtaining processing delays for handover with PSCells, including Radio Resource Control (RRC) procedure delays and UE processing delays, to optimize handover procedures by using specific delay values based on legacy procedures and UE capabilities, thereby improving the efficiency and accuracy of handover operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If handover procedures with PSCell are performed without specified delay requirements, then the system maintains simplicity in protocol design, but handover efficiency and accuracy deteriorate due to lack of optimized timing parameters
Solution Approach 1:
The patent applies parameter changes by introducing specific delay requirements (e.g., T1, T2, T3 parameters) for handover procedures with PSCell. These timing parameters define precise windows for measurement reporting, handover execution, and resource allocation, transforming the previously unspecified handover process into a controlled procedure with optimized timing characteristics.
2Measurement precision
If generic handover delay requirements are used, then the protocol remains simple and easy to implement, but handover accuracy and resource utilization deteriorate
Solution Approach 1:
The patent applies local quality by defining different delay requirements for different stages of the handover procedure. Specific timing parameters (T1 for measurement reporting, T2 for handover execution, T3 for resource allocation) are assigned to different phases, allowing each stage to be optimized independently rather than using a single generic delay value for the entire handover process.
3Productivity
If no specific processing delay values are obtained for PSCell handover, then the implementation remains simple, but resource utilization and communication performance deteriorate
Solution Approach 1:
The patent applies preliminary action by establishing delay requirements and timing parameters before the handover procedure is executed. The network configures T1, T2, T3 parameters in advance, allowing the UE and network to coordinate their actions within predetermined time windows, thereby optimizing resource allocation and reducing actual handover execution time.
Data Source
AI summary
Provided is a method for a user equipment (UE). The method includes obtaining a processing delay for handover (HO) with primary secondary cell (PSCell) and performing a procedure of the HO with PSCell based on the obtained processing delay for the HO with PSCell.