Multi-connection RF Exposure Compliance via Dynamic Power Allocation
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Solution Overview
Problem
Wireless communication devices face challenges in efficiently distributing transmit power among multiple connections, leading to reduced performance due to inadequate consideration of connection characteristics such as transmission distance, signal strength, and data error rates, resulting in suboptimal RF exposure compliance and communication performance.
Innovation Solution
A method and apparatus that dynamically allocate transmit powers on a per-connection basis considering characteristics like distance, signal strength, and data error rates, using a constrained optimization method like Lagrange multipliers to efficiently distribute the transmit power budget across multiple connections, ensuring RF exposure compliance and improved communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmit power is increased to improve communication performance, then throughput and transmission range are improved, but RF exposure limits are exceeded
Solution Approach 1:
The patent applies local quality by distributing transmit power differently across multiple connections based on their specific characteristics. Each connection receives a customized power allocation considering factors like transmission distance, signal strength, and data error rates, rather than applying a uniform power limit to all connections. This enables optimal power distribution that improves throughput while maintaining RF exposure compliance.
2Ease of operation
If transmit power is uniformly distributed among multiple connections, then RF exposure compliance is simplified, but communication performance deteriorates due to inadequate consideration of connection characteristics
Solution Approach 1:
The patent segments the total transmit power budget into connection-specific power allocations. Instead of treating all connections uniformly, the system divides the power resource based on individual connection characteristics such as transmission distance, signal strength, and data error rates. This segmentation enables differentiated power distribution that optimizes communication performance for each connection while maintaining overall RF exposure compliance.
Solution Approach 2:
The patent changes the power allocation parameters dynamically based on connection characteristics. By adjusting transmit power levels according to factors like transmission distance, signal strength, and data error rates, the system adapts the power distribution to match actual communication needs. This parameter-based allocation improves communication performance while ensuring RF exposure limits are not exceeded.
3Length of stationary object
If transmit power is increased for distant connections, then transmission range is extended, but total power budget is exceeded
Solution Approach 1:
The patent changes power allocation parameters based on transmission distance and other connection characteristics. Distant connections receive higher power allocations to extend transmission range, while closer connections receive lower allocations. The system dynamically adjusts these parameters within the total power budget constraint, ensuring that the sum of all connection-specific power allocations does not exceed the available budget while maximizing overall transmission range.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques and apparatus for multi-connection radio frequency (RF) exposure compliance. An example method of wireless communication includes obtaining a transmit power budget associated with a time interval. The method further includes determining transmit powers on a per-connection basis among a plurality of connections based at least in part on the transmit power budget and one or more characteristics associated with the connections. The method further includes transmitting signals associated with the connections at the respective transmit powers in the time interval.