Multi-Access Transmitting Power Control for SAR Compliance
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Solution Overview
Problem
Current user equipment transmitting data using multiple access technologies often exceeds the specific absorption rate (SAR) limits, as there is no effective method to control transmitting power across these technologies simultaneously.
Innovation Solution
A method and apparatus that set and control a power reduction value for transmitting power in one access technology based on the transmission state of another, ensuring the total transmitting power does not exceed SAR limits, while allowing for timely and reasonable power headroom reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If user equipment transmits data simultaneously using multiple access technologies, then data transmission capability is improved, but transmitting power exceeds SAR limits
Solution Approach 1:
The patent dynamically adjusts the transmitting power parameter of the second access technology based on the transmitting power of the first access technology. When the first access technology transmits at high power, the second access technology's power is reduced accordingly, ensuring the total power remains within SAR limits while maintaining simultaneous multi-access transmission capability
Solution Approach 2:
The patent implements dynamic power control where the power reduction value for the second access technology is adjusted in real-time based on the transmission state of the first access technology. This dynamic adjustment allows the system to adapt to changing transmission conditions while continuously satisfying SAR requirements
2Object-affected harmful factors
If transmitting power for second access technology is reduced to meet SAR limits, then SAR compliance is improved, but data transmission efficiency deteriorates
Solution Approach 1:
The patent applies partial power reduction only to the second access technology when needed, rather than reducing power across all access technologies. This selective approach ensures SAR compliance is achieved with minimal impact on overall data transmission efficiency, as the first access technology can continue at optimal power levels
Solution Approach 2:
The patent implements a feedback mechanism where the transmitting power state of the first access technology is monitored and used to dynamically adjust the power of the second access technology. This feedback loop ensures that power reduction is applied only when and where necessary to meet SAR limits, minimizing the impact on transmission efficiency
Data Source
AI summary
The present invention discloses a method and an apparatus for controlling transmitting power and relates to the field of communications. The method includes: setting, according to a transmission state of data transmission using a first access technology, a power reduction value of transmitting power for data transmission using a second access technology; and controlling, according to the power reduction value, transmitting power for data transmission using the second access technology. The apparatus includes: a setting module, configured to set, according to a transmission state of data transmission using a first access technology, a power reduction value for transmitting power for data transmission using a second access technology; and a controlling module, configured to control, according to the power reduction value, the transmitting power for data transmission using the second access technology.