RF Transmission Power Control Using Band-Specific APT Tables
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Solution Overview
Problem
Existing electronic devices face challenges in efficiently managing transmission power for RF signals across different frequency bands, particularly in supporting both legacy and 5G networks, leading to potential interference and suboptimal performance.
Innovation Solution
The electronic device employs a communication processor to identify the current band and associated parameters, adjusting transmission power based on APT tables to ensure compliance with standards and minimize interference by controlling the magnitude of baseband signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electronic device transmits RF signals across multiple frequency bands to support both legacy and 5G networks, then network compatibility and data transmission rate are improved, but transmission power management becomes complex and interference between bands increases
Solution Approach 1:
The patent segments transmission power management by creating separate APT tables for different frequency bands (first APT table for legacy networks, second APT table for 5G networks). The communication processor identifies the current band and selects the appropriate table, dividing the complex power management task into manageable band-specific segments that can be independently optimized.
Solution Approach 2:
The patent implements dynamic transmission power adjustment by continuously monitoring band parameters and signal conditions, then selecting or modifying APT table entries in real-time. The communication processor dynamically changes transmission power based on current operating conditions, allowing the system to adapt to varying network environments while maintaining compatibility across multiple bands.
2Reliability
If transmission power is increased to improve signal quality and data transmission rate, then communication performance is improved, but interference with other bands and networks increases
Solution Approach 1:
The patent applies local quality by configuring transmission power parameters specifically for each frequency band's characteristics. The first APT table contains power settings optimized for legacy networks, while the second APT table contains settings optimized for 5G bands. This allows each band to operate at locally optimal power levels that ensure signal quality without causing excessive interference to other bands.
Solution Approach 2:
The patent implements feedback mechanisms where the communication processor monitors transmission conditions and adjusts power settings based on observed performance. By continuously evaluating signal quality and interference levels, the system can dynamically modify transmission power to maintain reliability while minimizing harmful interference effects.
3Object-generated harmful factors
If the electronic device uses separate APT tables for different bands to optimize transmission power, then interference is reduced and compliance with standards is improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple APT tables with optimized power parameters for different frequency bands before operation. The communication processor identifies the current band and selects the appropriate pre-configured table, avoiding the need for complex real-time calculations. This preliminary preparation reduces processing overhead during actual transmission while maintaining interference reduction benefits.
Data Source
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AI summary
According to an embodiment, an electronic device comprises: a memory storing instructions; at least one communication processor; and at least one RF circuit configured to process an RF signal on the basis of a signal from the at least one communication processor. The instructions, when executed by the at least one communication processor, may cause the electronic device to: on the basis of having identified a first event, identify whether a band associated with the first event is a first band; on the basis of having identified that the band associated with the first event is the first band, identify whether a first parameter associated with transmission of an RF signal satisfies a first condition; on the basis of having identified that the first parameter satisfies the first condition, set, on the basis of a first APT table, first power as transmission power for the RF signal associated with the first event; and on the basis of having identified that the first parameter does not satisfy the first condition, change, on the basis of a second APT table, the magnitude of a baseband signal transmitted to the RF circuit so as to set second power as transmission power for the RF signal associated with the first event.