Secondary Cell Measurement Refresh for FR2 Multi-Link Access
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Solution Overview
Problem
The delay in detecting and measuring frequency range 2 (FR2) carriers in the NR technology protocol leads to unreliable early measurement reports, resulting in poor link performance and quality in dual-connectivity or carrier aggregation scenarios due to expired measurement results.
Innovation Solution
User equipment performs an enhanced measurement on selected carriers during the access to a service cell, based on configuration parameters such as effective duration, signal strength, or priority levels, to obtain more accurate secondary cell measurements for multi-links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If early measurement report is used to support rapid establishment of dual-connectivity or carrier aggregation, then connection establishment speed is improved, but measurement result reliability deteriorates due to long detection and measurement delay in FR2 scenario
Solution Approach 1:
The patent performs a first measurement in advance when the terminal is in a non-connected state to obtain initial carrier measurement information. This preliminary measurement allows the system to prepare measurement data before the actual connection establishment process, enabling faster dual-connectivity or carrier aggregation setup while maintaining measurement accuracy by using fresh measurement results from the access service cell event.
2Measurement precision
If measurement is performed on all N to-be-measured carriers, then measurement completeness is improved, but measurement capacity consumption and time delay increase
Solution Approach 1:
The patent extracts and performs a second measurement only on M to-be-measured carriers (where M ≤ N) that are relevant to the access service cell event, rather than measuring all N carriers. This selective measurement approach reduces measurement time delay and capacity consumption while maintaining sufficient measurement completeness for determining secondary cells in multi-links.
3Measurement precision
If measurement is performed on all N to-be-measured carriers, then measurement completeness is improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent extracts and performs a second measurement only on M to-be-measured carriers (where M ≤ N) that are relevant to the access service cell event, rather than measuring all N carriers. This selective measurement approach reduces measurement time delay and capacity consumption while maintaining sufficient measurement completeness for determining secondary cells in multi-links.
4Speed
If early measurement report is used, then connection establishment speed is improved, but link performance deteriorates due to expired measurement results
Solution Approach 1:
The patent implements a feedback mechanism where the terminal performs a second measurement on M to-be-measured carriers in response to an access service cell event. This feedback loop ensures that the network device receives updated measurement results that reflect current signal conditions, preventing the use of expired measurement data and ensuring optimal secondary cell selection for maintaining link performance.
Data Source
AI summary
A measurement method is performed by a user equipment, and includes: receiving measurement configuration information transmitted by a network device, where the measurement configuration information is to configure N to-be-measured carriers; performing a first measurement on the N to-be-measured carriers when the user equipment is in a non-connected state, to obtain a first measurement result; performing a second measurement on M to-be-measured carriers of the N to-be-measured carriers in response to an access service cell event, to obtain a second measurement result, where M and N are positive integers and M is less than or equal to N; and transmitting the second measurement result to the network device, where the second measurement result is configured to determine a secondary cell in multi-links.