D2D Transmission Power Spectral Density Adjustment
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Solution Overview
Problem
Existing D2D communication systems face challenges in optimizing power spectral density to minimize interference with Uu communication while ensuring performance in both D2D and Uu communication.
Innovation Solution
A method and apparatus for determining an adjustment amount based on measurement or signaling information to adjust the power spectral density, allowing for target transmission with reduced interference to Uu communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power spectral density is increased to improve D2D transmission performance, then transmission performance of D2D communication is improved, but interference with Uu communication increases
Solution Approach 1:
The patent applies dynamics by making the power spectral density adjustable rather than fixed. The first device dynamically determines a first adjustment amount based on first information (measurement or signaling) and applies this adjustment to the power spectral density, allowing it to adapt between D2D and Uu communication scenarios to balance transmission performance and interference reduction
Solution Approach 2:
The patent changes the parameter of power spectral density by introducing an adjustment mechanism. The system modifies the power spectral density based on determined adjustment amounts derived from measurement results or signaling information, enabling optimization of the trade-off between D2D transmission performance and interference to Uu communication
2Object-generated harmful factors
If power spectral density is decreased to reduce interference with Uu communication, then interference with Uu communication is reduced, but transmission performance of D2D communication deteriorates
Solution Approach 1:
The system dynamically adjusts power spectral density based on real-time conditions. When Uu communication is detected or signaled, the device reduces power spectral density to minimize interference. When D2D transmission is the primary mode, the device increases power spectral density to improve transmission performance, thus resolving the contradiction through dynamic adaptation
Solution Approach 2:
The patent implements feedback mechanisms where measurement results from the transmission resource or signaling information are used to determine adjustment amounts. This feedback loop enables the system to continuously optimize power spectral density based on actual communication conditions, balancing interference reduction and transmission performance
Data Source
AI summary
A transmission method, which includes determining, by a first device, a first adjustment amount based on first information, the first adjustment amount being used for adjusting a power spectral density of the first device; determining, by the first device, a target power spectral density based on the first adjustment amount and first power spectral density information, the first power spectral density information being related to the power spectral density of the first device; and performing, by the first device, target transmission with a second device based on the target power spectral density. The first information satisfies at least one of the following; being obtained based on a result of measurement performed on a transmission resource of the target transmission, or being obtained by using information carried by signaling.