NR V2X Sidelink Power Control Using A-MPR for PSSCH and PSCCH
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Solution Overview
Problem
There is no Additional-MPR (A-MPR) defined for the transmission of PSSCH and PSCCH between NR V2X UEs, which affects efficient communication.
Innovation Solution
Propose A-MPR values conforming to EU regulation conditions for V2X terminals to enable efficient V2X communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If A-MPR values are not defined for PSSCH and PSCCH transmission between NR V2X UEs, then the system maintains simplicity in power control parameters, but communication efficiency is degraded due to lack of optimized power management
Solution Approach 1:
The patent introduces A-MPR (Additional Maximum Power Reduction) as a new power control parameter specifically for V2X communication. This parameter change enables optimized power management by allowing different power reduction values for different transmission scenarios (PSSCH data transmission vs. PSCCH control transmission), thereby improving communication efficiency without significantly increasing system complexity
Solution Approach 2:
The patent segments the power control mechanism by creating separate A-MPR parameters for different physical channels (PSSCH and PSCCH). This segmentation allows independent optimization of power control for data transmission and control transmission, enabling efficient power management tailored to specific communication needs while maintaining clear parameter organization
2Reliability
If A-MPR values are proposed conforming to EU regulation conditions, then regulatory compliance is achieved and communication efficiency is improved, but the configuration complexity increases
Solution Approach 1:
The patent establishes A-MPR values in advance that are pre-configured to conform to EU regulation conditions (specifically ETSI requirements for V2X communication). By performing this compliance configuration beforehand, the system ensures regulatory reliability is met while reducing the complexity of real-time power control decisions during actual V2X communication operations
Data Source
AI summary
A disclosure of the present specification provides a user equipment (UE). The UE may comprise a transceiver unit for transmitting and receiving a signal, and a processor for controlling the transceiver unit, wherein the processor: obtains a network signal (NS) 33; determines an additional maximum power reduction (A-MPR) on the basis of the obtained NS 33; and determines transfer power for a sidelink signal on the basis of the determined A-MPR, and the transceiver transmits the sidelink signal to another UE with the transfer power.