Wireless Device RF Chain Measurement Gap Allocation
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Solution Overview
Problem
Current wireless communication systems, particularly in LTE and LTE-Advanced, face inefficiencies due to the provision of a single measurement gap by the base station to wireless devices with multiple RF chains, leading to unnecessary interruptions in transmission and reception across all carrier aggregated cells during inter-frequency measurements.
Innovation Solution
The method involves determining and independently applying a measurement gap to each RF chain of the wireless device, allowing for efficient inter-frequency measurements by determining which carrier the measurement gap is applied to, and transmitting a measurement report that indicates the carrier, thereby optimizing the measurement process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single measurement gap is provided to wireless devices with multiple RF chains, then the base station configuration is simplified, but transmission and reception interruptions occur across all carrier aggregated cells during inter-frequency measurements
Solution Approach 1:
The patent divides the measurement gap application into separate segments for each RF chain. Instead of applying a single measurement gap to all RF chains simultaneously, the system configures individual measurement gaps for each RF chain, allowing independent measurement scheduling. This segmentation enables selective measurement gaps that minimize interruptions to carrier aggregated cells while maintaining measurement functionality.
2Device complexity
If a single measurement gap is applied to all RF chains, then the measurement gap configuration is simplified, but measurement efficiency deteriorates due to unnecessary interruptions in all cells
Solution Approach 1:
The patent implements local quality by tailoring measurement gap configurations to specific RF chains based on their individual requirements. Each RF chain can have its own measurement gap parameters (timing, duration, frequency) optimized for its specific measurement needs, rather than applying a uniform configuration to all RF chains. This localized approach reduces unnecessary interruptions and improves overall measurement efficiency.
3Productivity
If multiple measurement gaps are provided for multiple RF chains, then measurement efficiency is improved, but base station configuration complexity increases
Solution Approach 1:
The patent introduces dynamic configuration capabilities that allow the base station to adaptively manage multiple measurement gaps based on real-time conditions. The system can dynamically activate or deactivate specific measurement gaps for particular RF chains depending on current traffic conditions, measurement requirements, and network load. This dynamic approach enables high measurement efficiency while managing configuration complexity through intelligent control rather than static rigid settings.
Data Source
AI summary
A disclosure of the present specification provides a method for performing measurement in a wireless device having a plurality of radio frequency (RF) chains for supporting aggregation of multiple carriers. The method may comprise the steps of: receiving, from a base station, information including measurement configuration (MeasConfig) information that includes a measurement gap (MG) for performing inter-frequency measurement; when the number of the received measurement gaps is one, determining, among the multiple carriers, a carrier corresponding to the RF chain to which the one measurement gap is to be applied; and transmitting, to the base station, a measurement report including the result of performing inter-frequency measurement by applying the measurement gap to the RF chain for the determined carrier. When the number of the received measurement gaps is one, the measurement report may include an indication of the carrier to which the measurement gap has been applied.