MAC CE Measurement Reporting for Low-Overhead Cell Handover
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Solution Overview
Problem
In wireless communication systems, layer 1 measurement reporting by terminal devices results in high overheads when the probability of cell handover is low, as frequent reporting of measurement results is unnecessary, leading to inefficient use of resources.
Innovation Solution
A measurement reporting method where a terminal device sends first and second information upon satisfying a reporting condition, including an identifier of the measurement event and measurement results, and a network device configures whether to include additional information in the MAC CE, allowing flexible parsing and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device frequently reports layer 1 measurement results, then the network device can obtain measurement results for cell handover decision, but the measurement reporting overheads are high and resource utilization is low
Solution Approach 1:
The patent implements event-triggered measurement reporting where the terminal device reports measurement results only when specific events occur (e.g., when measurement thresholds are met or handover conditions are satisfied), rather than reporting periodically. This event-driven approach reduces unnecessary reporting overheads while ensuring the network device receives critical measurement data for accurate cell handover decisions.
Solution Approach 2:
The patent dynamically adjusts reporting parameters based on channel conditions and handover probability. When the probability of cell handover is low, the terminal device reduces reporting frequency or stops reporting, thereby reducing overheads. When handover conditions are met, reporting is triggered to ensure accurate handover decisions, effectively adapting the reporting behavior to current system conditions.
2Productivity
If the terminal device reports measurement results only when necessary, then resource usage is optimized, but the network device may miss important measurement data
Solution Approach 1:
The patent implements a feedback mechanism where the network device configures measurement reporting parameters and thresholds based on current system state and handover needs. The terminal device monitors measurement results against these thresholds and triggers reports when conditions are met. This closed-loop feedback ensures that the network device receives necessary measurement data while minimizing unnecessary reports, balancing information completeness with resource efficiency.
Solution Approach 2:
The network device performs preliminary configuration by setting measurement thresholds, reporting triggers, and handover parameters before the terminal device begins measurement. This preliminary setup ensures that the terminal device knows when and what to report, preventing loss of critical measurement data while optimizing resource usage by avoiding unnecessary reports.
Data Source
AI summary
Related to the field of communication technologies, a measurement reporting method and an apparatus. The method includes: after determining that a reporting condition of a measurement event is satisfied, a terminal device sends a media access control (MAC) control element (CE) to a network device, where the MAC CE includes first information and second information, the first information indicates the measurement event, the second information includes measurement results of M measurement resources corresponding to the measurement event, and M is a positive integer. In this way, after determining that the reporting condition of the measurement event is satisfied, the terminal device sends the result of the measurement resource corresponding to the measurement event to the network device. In comparison with a manner in which the terminal device periodically reports the measurement result, reporting overheads can be effectively reduced, and transmission resources can be saved.