Multi-Antenna Transmit Power Control for Frequency Band Changes
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Solution Overview
Problem
In 5G communication systems, the inability to accurately adjust total radiation power due to changes in antenna gain and transmit power settings, particularly in environments with multiple frequency components like EN-DC or carrier aggregation, leads to degraded communication performance.
Innovation Solution
An electronic device with a communication processor that identifies changes in antenna settings and frequency band information, adjusts transmit power settings to optimize signal transmission through multiple antennas, ensuring integrated management of antenna gain and transmit power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electronic device changes the antenna gain considering multiple frequency components, then the adaptability to different frequency bands is improved, but the transmit power controller cannot identify the magnitude of the changed total radiation power, leading to degraded communication performance
Solution Approach 1:
The patent implements a feedback mechanism where the transmit power controller receives information about antenna gain changes from the antenna switch controller. This feedback loop enables the transmit power controller to identify the magnitude of total radiation power changes and adjust transmit power accordingly, resolving the issue where communication performance degraded due to inability to track antenna gain changes across multiple frequency components
Solution Approach 2:
The patent introduces an intermediary information exchange mechanism between the antenna switch controller and transmit power controller. The antenna switch controller notifies the transmit power controller about antenna gain changes, acting as an intermediary that bridges the two controllers. This allows the transmit power controller to respond appropriately to antenna gain changes while maintaining integrated management of total radiation power
2Productivity
If the electronic device transmits signals through multiple antenna paths, then the data transmission rate is improved, but the integrated management of antenna gain and transmit power becomes complex
Solution Approach 1:
The patent merges the management of antenna gain and transmit power into a unified control framework. By establishing direct communication and coordination between the antenna switch controller and transmit power controller, the system integrates these two previously separate control functions. This unified approach enables efficient management of multiple antenna paths while maintaining optimal total radiation power, thus supporting high data transmission rates without excessive complexity
Data Source
AI summary
According to various embodiments, an electronic device may comprise: a memory, a communication processor, at least one radio frequency integrated circuit (RFIC), and a plurality of antennas each connected with the at least one RFIC. The communication processor may be configured to: identify a change in an antenna-related setting for the plurality of antennas, identify frequency band information corresponding to a signal being communicated through at least one antenna among the plurality of antennas, in response to the change in the antenna-related setting, identify, from the memory, a transmit power-related setting value set corresponding to the identified frequency band information and an event related to the communication processor, and control the electronic device to adjust a power of a transmission signal to be transmitted through at least one antenna among the plurality of antennas based on the identified transmit power-related setting value.