Sidelink Output Power Limits for Simultaneous Resource Pools
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Solution Overview
Problem
The issue of determining the maximum output power of a terminal when transmitting using multiple resource pools in 3GPP LTE and NR systems, particularly in scenarios where the device's configured maximum output power is not adequately addressed.
Innovation Solution
Determine the maximum output power of the terminal based on the maximum transmit power values for each of the multiple resource pools, ensuring compliance with regulatory limits and optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device transmits PSFCH using multiple resource pools, then the communication coverage and reliability are improved, but the power management complexity and difficulty of determining maximum output power increase
Solution Approach 1:
The patent divides the power management approach by segmenting resource pools into different categories (first resource pools with first maximum transmit power values and second resource pools with second maximum transmit power values). This segmentation allows the device to apply different power determination methods to different resource pools, simplifying the overall power management while maintaining reliability across multiple pools.
Solution Approach 2:
The patent changes the power management parameters by introducing different maximum transmit power values for different resource pools. The device determines the maximum output power based on whether the resource pool is a first or second resource pool, using different parameter sets (first maximum transmit power values vs. second maximum transmit power values) to resolve the complexity of unified power management.
2Reliability
If the device uses multiple resource pools for PSFCH transmission, then the service availability and communication performance are improved, but the power consumption increases
Solution Approach 1:
The patent implements dynamic power management where the device adjusts its transmit power based on the specific resource pool being used. By determining maximum output power dynamically according to whether the resource pool is a first or second type, the device optimizes power consumption while maintaining service availability across multiple resource pools.
Solution Approach 2:
The patent applies different power parameters (first maximum transmit power values versus second maximum transmit power values) based on resource pool classification. This parameter change approach allows the device to optimize power consumption by selecting appropriate power levels for different resource pools while maintaining overall service availability.
Data Source
AI summary
One disclosure of the present specification provides a method. The method comprises: determining a configured maximum output power; transmitting, to another UE, on a first resource pool and a second resource pool at a same time, based on the configured maximum output power, wherein the configured maximum output power is configured, based on a maximum transmission power for the first resource pool and a maximum transmission power for the second resource pool, wherein the maximum transmission power for the first resource pool is a maximum value of transmission power when sidelink transmission is performed only on the first resource pool, wherein the maximum transmission power for the second resource pool is a maximum value of transmission power when sidelink transmission is performed only on the second resource pool.