Multi-RAT Measurement Report Preparation for Signaling Overhead Reduction
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Solution Overview
Problem
Digital cellular telecommunications systems face challenges in managing measurement reports from multi-RAT mobile stations to limit signaling overhead while ensuring accurate handover processes across different radio access technologies, particularly in selecting the appropriate cells to report within limited bandwidth constraints.
Innovation Solution
A method for preparing measurement reports in multi-RAT mobile stations that involves determining valid neighbor resources for each supported radio access technology, ranking them based on measurement quantities, and including resources in the report according to a predetermined sequence and threshold values, ensuring that the number of resources reported aligns with pre-defined parameters to optimize reporting efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement reports include resources from all supported RATs, then measurement precision is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts and reports only the most relevant neighbor cell resources from each RAT based on ranking criteria (measurement quantities, thresholds, and predetermined sequences). Instead of including all measured resources, the system selectively extracts those that meet reporting criteria, thereby reducing signaling overhead while maintaining measurement precision for handover decisions.
Solution Approach 2:
The patent applies different reporting criteria and thresholds for different RATs and different neighbor cell resources. Each RAT (GSM, UMTS, LTE, etc.) can have customized reporting parameters, allowing the system to optimize the balance between report completeness and overhead for each specific radio access technology based on local network conditions and requirements.
2Reliability
If measurement reports include comprehensive information on all RATs, then handover reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the measurement report into structured components for different RATs, with each RAT having its own set of neighbor cell resources ranked and filtered independently. This segmentation allows the MS to organize complex multi-RAT measurement data in a manageable format, improving handover reliability while controlling device complexity through systematic organization.
Solution Approach 2:
The patent dynamically adjusts reporting parameters such as the number of neighbor cells to report per RAT, measurement thresholds, and ranking criteria based on network conditions and configuration. This allows the system to adapt the level of detail in measurement reports to match actual handover needs, maintaining reliability while reducing unnecessary processing complexity.
Data Source
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AI summary
The present document relates to digital cellular telecommunications systems, such as GSM (Global System for Mobile communication) networks. In particular, the present document relates to the radio sub-system link control implemented in the Mobile Station (MS), Base Station System (BSS) and/or Mobile Switching Centre (MSC) of such digital cellular telecommunications systems. A method (200) for preparing a measurement report on neighbour resources of a multi-RAT mobile station (100) is described. The MS (100) supports a plurality of radio access technologies (RATs). The method (200) comprises receiving (201) a plurality of RAT resource reporting values, each RAT resource reporting value indicating a number of resources of the corresponding RAT to be included into the measurement report; determining (205) a plurality of lists of valid neighbour resources associated with the plurality of RATs; and including (208) resources from the plurality of lists of valid neighbour resources into the measurement report according to a RAT sequence of the plurality of RATs, wherein a second resource of the given RAT is included into the report, subject to including a first resource into the measurement report, for each of the plurality of RATs for which the RAT resource reporting value is greater than zero.