RGS Value Segmentation for Multi-RAT Frequency Error Compensation
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Solution Overview
Problem
Conventional multi-RAT communication devices face challenges in managing frequency errors across different base stations, leading to inaccuracies in sleep duration calculations and network acquisition/re-acquisition operations due to the use of a single system RGS value for all RATs, resulting in pilot timing and slew errors.
Innovation Solution
The method involves maintaining separate, up-to-date RGS values for each RAT, associating them with respective attributes like temperature and network conditions, and using these values for individual RAT operations such as acquisition, re-acquisition, sleep scheduling, and handover operations, ensuring accurate frequency adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single system RGS value is used for all RATs, then device complexity is reduced, but measurement precision and reliability deteriorate due to frequency errors varying across different base stations and networks
Solution Approach 1:
The patent segments the single system RGS value into multiple RAT-specific RGS values. Each RAT (Radio Access Technology) maintains its own RGS value to account for network-specific frequency errors. This segmentation allows precise frequency error compensation for each RAT while managing complexity through organized storage and retrieval mechanisms.
2Reliability
If RAT-specific RGS values are maintained, then reliability and measurement precision improve, but device complexity increases due to multiple RGS values and associated management overhead
Solution Approach 1:
The patent applies local quality by associating each RGS value with specific attributes relevant to its RAT context, such as network identifiers, base station information, and temperature conditions. This allows the system to retrieve the most appropriate RGS value for current operating conditions, improving reliability while managing complexity through attribute-based organization.
Solution Approach 2:
The system implements feedback mechanisms to update RGS values based on measured frequency errors from actual network operations. By continuously monitoring and updating RGS values with current network conditions, the system maintains high reliability without requiring manual intervention, thereby managing complexity through automated processes.
3Productivity
If frequency adjustments are made for each RAT based on specific RGS values, then productivity and performance improve, but energy consumption increases due to additional processing and calculations
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing RGS values for different RATs based on historical network data and typical operating conditions. This allows the system to quickly retrieve and apply appropriate frequency adjustments during network acquisition without performing extensive real-time calculations, thereby improving productivity while minimizing additional energy consumption.
Data Source
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AI summary
Various embodiments provide methods implemented in a mobile communication device (e.g., a multi-RAT communication device) for maintaining at least one separate RGS value for each of a plurality of RATs operating on the mobile communication device. Specifically, a device processor on the mobile communication device (e.g., a crystal oscillator manager) may maintain a separate, up-to-date RGS value for each of the plurality of RATs and may associate each of the plurality of RATs with their respective RGS values. By keeping track of the plurality of RATs' respective RGS values, the device processor may ensure that an appropriate RGS value is used to facilitate each RAT's individual operations, such as acquisition/re-acquisition operations, sleep scheduling calculations, and handover/inter-RAT measurement operations. As a result, various embodiments may improve the performance of each RAT and the overall performance of the mobile communication device.