Mobile Terminal Half-Duplex FDD Signal Priority Control
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Solution Overview
Problem
In mobile terminal apparatuses using the Half-duplex FDD scheme, optimization of operation remains an issue, particularly when uplink and downlink transmission/reception timings overlap.
Innovation Solution
A mobile terminal apparatus that performs radio communications with a base station using a half-duplex scheme, featuring a transmission/reception section and a control section that selectively manage uplink and downlink signal processing based on a defined priority relationship between the two signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If Half-duplex FDD scheme is applied to simplify mobile terminal apparatus, then device complexity is reduced, but operation optimization becomes difficult when uplink and downlink timings overlap
Solution Approach 1:
The patent implements dynamic switching between transmission and reception modes based on timing overlap detection. The mobile terminal apparatus dynamically adjusts its operation by determining whether uplink transmission timing overlaps with downlink reception timing, and selectively performing only one operation at overlapping periods. This dynamic adaptation resolves the contradiction by enabling flexible operation optimization while maintaining the simplified half-duplex architecture.
2Productivity
If uplink and downlink transmission/reception are performed simultaneously, then communication efficiency is improved, but signal interference and timing conflicts occur in half-duplex systems
Solution Approach 1:
The patent applies preliminary action by detecting timing overlaps between uplink transmission and downlink reception before actual signal processing occurs. The mobile terminal apparatus determines in advance whether timing overlap exists, and proactively prevents conflicting operations by selecting only one mode (transmission or reception) during overlapping periods. This preliminary detection and prevention mechanism ensures signal processing reliability while maintaining efficient communication scheduling.
Data Source
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AI summary
To optimize operation of a mobile terminal apparatus when a Half-duplex FDD scheme is applied, the mobile terminal apparatus performs radio communications with a base station apparatus by HD-FDD, and when transmission timing of an uplink signal and reception timing of a downlink signal overlaps each other, selectively performs transmission processing of the uplink signal and reception processing of the downlink signal, based on a priority relationship defined between the uplink signal and the downlink signal.