Predicted RRM Measurement Reporting for Faster Cell Quality Response
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Solution Overview
Problem
In New Radio (NR) networks, existing methods for Radio Resource Management (RRM) measurements in a Radio Resource Control (RRC)_CONNECTED state do not effectively utilize predicted RRM measurements to optimize cell quality assessments, leading to inefficiencies in beam and cell quality derivation.
Innovation Solution
A wireless transmit/receive unit (WTRU) sends an indication of its RRM measurement prediction capabilities to the network, receives configuration information, and determines predicted RRM measurements based on conditions such as cell quality thresholds, sending a report that includes information about these measurements to enhance network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional RRM measurement methods are used, then measurement accuracy is maintained, but measurement efficiency and responsiveness to cell quality changes deteriorate
Solution Approach 1:
The patent applies preliminary action by performing RRM measurements on neighboring cells in advance and storing the results. When a triggering event occurs (such as serving cell quality degradation), the pre-measured neighboring cell data is immediately available for rapid handover decisions, eliminating the need to perform measurements at the moment of decision-making.
Solution Approach 2:
The patent uses copying by creating and maintaining copies of RRM measurement results for neighboring cells. These copied measurement values are stored in the WTRU and can be quickly retrieved and reported when needed, rather than performing fresh measurements every time a report is required.
2Reliability
If RRM measurements are performed frequently to improve responsiveness, then measurement accuracy and timeliness improve, but network overhead and energy consumption increase
Solution Approach 1:
The patent implements periodic action by configuring the WTRU to perform RRM measurements on neighboring cells at regular intervals or based on specific triggering events rather than continuously. This periodic measurement approach ensures the network has timely measurement data while allowing the device to conserve energy by not measuring constantly.
Solution Approach 2:
The patent applies discarding and recovering by allowing the WTRU to discard old or outdated RRM measurement results when they are no longer valid or useful, and to recover or retrieve previously stored measurement data when it is still valid and can be reused for reporting, avoiding redundant measurements.
3Loss of information
If comprehensive RRM measurement data is collected for all cells, then measurement completeness improves, but information processing complexity and reporting overhead increase
Solution Approach 1:
The patent applies taking out (extraction) by selectively extracting and reporting only the most relevant RRM measurement data. Instead of reporting all measured values, the WTRU identifies and reports only those measurements that meet specific criteria or are most critical for network decisions, reducing processing complexity while maintaining essential information completeness.
Solution Approach 2:
The patent implements local quality by applying different measurement and reporting strategies to different cells based on their importance and characteristics. For example, serving cells may receive more frequent and detailed measurement, while less critical neighboring cells may have measurements performed less frequently or with lower precision, optimizing the balance between information completeness and processing complexity.
Data Source
AI summary
A method performed by a wireless transmit receive unit (WTRU), including sending an indication of WTRU radio resource management (RRM) measurement prediction capabilities to a network. Configuration information is received by the WTRU, and the configuration information includes information associated with RRM or predicted RRM measurements, a condition associated with the RRM measurements, and information to be included in an RRM measurement report. A first predicted RRM measurement is determined. It is determined that a first RRM measurement fulfills the condition associated with the RRM measurements. A second predicted RRM measurement is determined based on the first RRM measurement fulfilling the condition associated with the RRM measurements. The second predicted RRM measurement is associated with a different cell, frequency, or time than the first RRM measurement. An RRM measurement report is sent to the network, and includes information associated with the second predicted RRM measurement.