NR Measurement Gap to NCSG Pattern Mapping
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Solution Overview
Problem
In New Radio (NR) networks, the transition from legacy Measurement Gap (MG) patterns to Network Controlled Small Gap (NCSG) patterns is challenging due to differences in measurement accuracy and signaling complexity, requiring a method to design and map NCSG patterns that maintain measurement length and simplify signaling while ensuring compatibility with legacy MG patterns.
Innovation Solution
Defining mapping tables and rules to relate legacy MG patterns to NCSG patterns, allowing UE to report capabilities and switch between MG and NCSG patterns, and configuring NCSG timing advances to align with effective measurement lengths, ensuring seamless transformation and minimal signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If legacy Measurement Gap (MG) patterns are used for measurements, then measurement accuracy is maintained, but signaling complexity and overhead increase
Solution Approach 1:
The patent transforms legacy MG pattern parameters into NCSG pattern parameters through defined mapping relationships. The measurement gap length (MGL) and repetition period (MGRP) of legacy MG patterns are converted to corresponding NCSG pattern parameters, enabling the system to use simplified NCSG patterns while maintaining measurement accuracy through parameter transformation rather than requiring complex new signaling.
Solution Approach 2:
The patent creates a mapping table that copies the structure and parameters of legacy MG patterns into NCSG pattern format. By replicating the established MG pattern framework within the NCSG framework, the system preserves compatibility and measurement accuracy while reducing signaling complexity through the simplified NCSG structure.
2Device complexity
If Network Controlled Small Gap (NCSG) patterns are introduced to reduce signaling complexity, then signaling overhead is reduced, but compatibility with legacy MG patterns deteriorates
Solution Approach 1:
The patent designs the NCSG pattern structure to be universally compatible with legacy MG patterns through defined mapping relationships. The NCSG patterns can function as both standalone patterns and transformations of legacy patterns, enabling the system to support both legacy and new patterns simultaneously without requiring separate handling mechanisms.
Solution Approach 2:
The patent introduces mapping tables as intermediary structures that bridge legacy MG patterns and NCSG patterns. These mapping tables act as translators that convert between the two pattern formats, enabling compatibility and seamless transition while maintaining the simplicity of NCSG signaling.
3Measurement precision
If measurement gap length is increased to improve measurement accuracy, then measurement duration increases, but system productivity decreases
Solution Approach 1:
The patent optimizes the measurement gap parameters by transforming legacy MG parameters into NCSG parameters with adjusted lengths. Through parameter transformation and optimization, the system achieves sufficient measurement accuracy with shorter effective gap durations, thereby improving system productivity while maintaining measurement quality.
Data Source
AI summary
A method performed in a User Equipment, UE, in a New Radio, NR, network, includes reporting to a network node, a capability indicating whether the UE supports Network Controlled Small Gap, NCSG, using a bit indicator together with Measurement Gap, MG patterns supported by the UE; or reporting, to the network node, NCSG patterns or one or more mandatory NCSG patterns using a number of bits; receiving a request message from the network node for performing a transformation from a current configured MG pattern to a corresponding NCSG pattern or from a current configured NCSG pattern to a corresponding MG pattern; determining parameters of the corresponding NCSG pattern or the MG pattern based on a mapping rule between MG patterns and NCSG patterns or from indication information received from the network node and switching to the corresponding NCSG pattern or the MG pattern for performing a measurement.