Usage Scenario Database Segmentation for Mobile Antenna Tuning
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Solution Overview
Problem
Existing mobile communication systems face challenges with inaccurate usage scenario determination, which affects user experience and compliance with SAR regulations, and require a method to create a usage scenario determination database with efficient memory usage.
Innovation Solution
A method involving impedance and aperture tuning of tuners to generate a usage scenario determination database by separating tuner types based on scenario dependency, reducing memory size and computational load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a usage scenario determination database is created with comprehensive impedance data for accurate usage scenario determination, then measurement precision is improved, but device complexity increases due to large memory size
Solution Approach 1:
The patent segments the usage scenario determination database into two distinct parts: a first part containing impedance data measured with an impedance tuner (first tuner) and a second part containing impedance data measured with an aperture tuner (second tuner). This segmentation allows the system to store and process different types of impedance data separately, reducing the overall memory requirements while maintaining comprehensive coverage for accurate usage scenario determination.
Solution Approach 2:
The patent changes the measurement parameters by using two different tuner types with distinct measurement approaches. The impedance tuner measures impedance while keeping electrical length unchanged, while the aperture tuner measures impedance with varying electrical length. This parameter differentiation allows the database to capture diverse impedance characteristics without requiring excessive storage space, as each tuner type captures specific aspects of antenna behavior under different conditions.
2Reliability
If comprehensive impedance data is collected for all antennas, frequencies and tuner states, then reliability is improved, but loss of time increases due to repeated measurements
Solution Approach 1:
The patent performs preliminary measurements by collecting impedance data for all antennas, frequencies, and tuner states in advance and storing them in the usage scenario determination database. This preliminary action ensures that when the system needs to determine usage scenarios, it can quickly retrieve pre-collected data without performing time-consuming repeated measurements, thus improving both reliability and reducing time loss.
Solution Approach 2:
By segmenting the measurement process into two separate parts (impedance tuner measurements and aperture tuner measurements), the patent enables parallel or independent data collection for each tuner type. This segmentation allows the system to efficiently organize and retrieve data without the overhead of managing a single large comprehensive measurement set, reducing the time required for data collection while maintaining complete and reliable database content.
Data Source
AI summary
The application provides a method for creating a usage scenario determination database and a mobile communication system for the same. In creating a first part of the usage scenario determination database, an impedance of at least one first tuner is repeatedly measured until all antennas among the antenna group are selected, a plurality of predetermined testing frequencies are selected and a plurality of tuning states of the at least one first tuner are selected. In creating a second part of the usage scenario determination database, an antenna impedance is repeatedly measured until all antennas among the antenna group are selected, the plurality of predetermined testing frequencies are selected, a plurality of tuning states of at least one second tuner are selected and at least one usage scenario is selected. The usage scenario determination database is created base on the first part and the second part.