Intra-Inter Frequency Determination via Reference Signal Comparison
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the 5G New Radio (NR) system, differentiating between intra-frequency and inter-frequency operations is challenging due to the use of higher frequencies and larger bandwidths, which affects synchronization signals and interference, leading to potential handover failures and latency issues.
Innovation Solution
The method involves determining reference or anchor radio measurement resources for intra-frequency operations and using these to differentiate between intra-frequency and inter-frequency operations by comparing measurement resources, allowing for appropriate configuration of bandwidth and transmission settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If higher frequencies and larger bandwidths are used in 5G NR, then data transmission capacity is improved, but differentiation between intra-frequency and inter-frequency operations becomes difficult
Solution Approach 1:
The patent introduces reference signals as intermediary elements that serve as unique identifiers for different frequency operations. These reference signals act as mediators between the physical frequency resources and the logical differentiation needed for intra-frequency versus inter-frequency operations, enabling the UE to distinguish between operation types through reference signal comparison rather than direct frequency measurement
Solution Approach 2:
The patent changes the parameter used for frequency differentiation from direct frequency value comparison to reference signal identity comparison. By transforming the differentiation criterion from a physical parameter (frequency) to a logical parameter (reference signal identity), the system can accurately distinguish intra-frequency and inter-frequency operations even when traditional frequency boundaries become ambiguous due to large bandwidths
2Measurement precision
If reference signal comparison method is used for frequency differentiation, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring reference signals with unique identities for different frequency operations before the actual measurement and differentiation process. This pre-assignment of reference signal identities simplifies the subsequent comparison operation, as the UE only needs to compare pre-defined identifiers rather than performing complex frequency analysis
Solution Approach 2:
The patent uses reference signals as simplified copies or representations of the actual frequency resources. Instead of directly analyzing and comparing complex frequency spectra, the system uses reference signal identities as copies that carry the essential differentiation information, significantly reducing processing complexity while maintaining measurement accuracy
Data Source
AI summary
The solution outlined in this disclosure is a method for determining intra-frequency operations and inter-frequency operations, the method comprises obtaining a first measurement resource of a first cell as a reference measurement resource, obtaining a second measurement resource of a second cell, the second measurement resource of the second cell and the first measurement resource of the first cell are of the same type, and determining whether the second cell operates on an intra-frequency carrier or an inter-frequency carrier by comparing the reference measurement resource to the second measurement resource of the second cell. The method may be carried out in a user equipment or a network node.