D2D Transmit Power Adjustment via PRB Position
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Solution Overview
Problem
In device-to-device (D2D) communication, the inability to flexibly adjust transmit power leads to interference between signals, affecting network communication performance.
Innovation Solution
A method where user equipment determines the physical resource block (PRB) used for signal transmission and adjusts transmit power based on the PRB's position, allowing for flexible power setting according to network performance requirements, reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If signals are transmitted over different physical resource blocks by using a same power, then device-to-device communication can be established, but transmit power cannot be flexibly adjusted causing interference in another signal
Solution Approach 1:
The patent applies local quality by configuring different transmit powers for different physical resource blocks. Specifically, the base station sends power configuration information that includes first power configuration information for a first physical resource block and second power configuration information for a second physical resource block, allowing each resource block to have optimized local power characteristics rather than using a uniform power level across all blocks.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting the transmit power parameter based on the specific physical resource block being used. The power configuration information enables the transmit power to vary according to the resource block position and requirements, transforming the fixed power parameter into a variable one that adapts to different transmission scenarios.
2Reliability
If maximum power is used for discovery signals, then discovery signal transmission is ensured, but interference is caused to other signals affecting network communication performance
Solution Approach 1:
The patent applies local quality by assigning different power levels to different signal types and resource blocks. Discovery signals can be configured with appropriate power levels in specific physical resource blocks while other signals use different power configurations, ensuring discovery signal reliability without causing excessive interference to other signals through localized power optimization.
Solution Approach 2:
The patent implements dynamics by making the transmit power configurable and adjustable based on network conditions and signal requirements. The power configuration information allows the system to dynamically optimize power allocation for discovery signals versus other signals, rather than using a static maximum power approach for all transmissions.
Data Source
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AI summary
Embodiments of the present invention provide a signal sending method, a user equipment, and a base station. The method includes: determining, by a first user equipment, at least one first physical resource block PRB used to send a first signal; determining, by the first user equipment according to a position of the at least one first PRB, a transmit power used by the first user equipment to send the first signal over the at least one first PRB; and sending, by the first user equipment, the first signal over the at least one first PRB by using the transmit power. The embodiments of the present invention can flexibly adjust a power for signal sending and improve network performance.