5G UE Measurement Reporting That Excludes NSA Cells
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Solution Overview
Problem
User equipment (UE) supporting standalone (SA) mode in 5G networks faces issues with unnecessary measurements on non-standalone (NSA) cells, leading to power waste, time waste, and overloaded registration procedures, which can result in handover failures and service interruptions.
Innovation Solution
The UE is equipped with a method to identify and exclude NSA cells from measurement lists using a pre-configured NSA cell database, allowing it to perform measurements and report only on SA cells, thereby reducing power consumption and avoiding registration overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs measurements on all cells including NSA cells, then the measurement coverage is complete, but the power consumption increases and measurement time is wasted
Solution Approach 1:
The patent extracts and removes NSA cells from the measurement cell list by comparing the measurement cell list with the pre-configured NSA cell database. This extraction process eliminates unnecessary measurements on NSA cells while preserving measurements on SA cells, thereby reducing power consumption without compromising measurement coverage for relevant cells.
2Reliability
If the UE performs measurements on all cells including NSA cells, then the measurement coverage is complete, but the measurement time increases
Solution Approach 1:
The patent extracts and removes NSA cells from the measurement cell list by comparing the measurement cell list with the pre-configured NSA cell database. This extraction process eliminates unnecessary measurements on NSA cells while preserving measurements on SA cells, thereby reducing measurement time without compromising measurement coverage for relevant cells.
3Loss of information
If the UE includes NSA cells in measurement reports, then the report contains comprehensive cell information, but the registration procedures become overloaded
Solution Approach 1:
The patent extracts and removes NSA cell measurement results from the measurement report, including only SA cell measurements. This filtering ensures that comprehensive information about relevant SA cells is reported while avoiding the overload caused by including unnecessary NSA cell data, thereby simplifying registration procedures.
4Reliability
If the UE measures both SA and NSA cells, then all available cells are evaluated, but handover failures occur due to NSA cell inclusion
Solution Approach 1:
The patent extracts and removes NSA cells from the measurement cell list and measurement reports. This extraction prevents handover failures by ensuring that only SA cells are considered for handover decisions, thereby improving handover success rate while maintaining reliable evaluation of all relevant SA cells.
Data Source
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AI summary
According to an embodiment of the present disclosure, a method performed by a user equipment in a wireless communication system, may include: receiving, from a base station, information for measurement, the information for measurement including frequency information related to at least one cell related to the measurement, or the frequency information and identifier information of the at least one cell; performing the measurement on a standalone (SA) cell excluding a cell matching a cell identified by information of at least one non-standalone (NSA) cell among the at least one cell, based on the information for the measurement and a specified NSA cell list including information of the at least one NSA cell; and transmitting, to the base station, a measurement report of the SA cell.