NR V2X Sidelink Power Allocation Across Multiple BWPs
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing power allocation for sidelink transmissions in scenarios with multiple Bandwidth Parts (BWP) in 5G networks, particularly in ensuring reliable and low-latency communications for applications like vehicle-to-everything (V2X) communications, where multiple carriers may overlap in time, leading to power distribution complexities.
Innovation Solution
A method for determining the priority of carriers with multiple BWPs and allocating transmission power based on these priorities to optimize sidelink transmissions, ensuring efficient power distribution across overlapping BWPs, thereby enhancing communication reliability and latency performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission power is allocated across multiple BWPs in NR V2X, then sidelink transmission reliability is improved, but power distribution complexity increases
Solution Approach 1:
The patent segments the total transmission power into separate power values for each BWP (first power value for first BWP, second power value for second BWP). This segmentation allows independent power control for each BWP, improving transmission reliability while managing complexity through structured power distribution across multiple frequency resources.
Solution Approach 2:
The patent dynamically adjusts power allocation based on BWP priority levels and transmission conditions. The network device configures different power values for different BWPs according to their priorities, and the terminal device adapts power distribution in real-time based on channel conditions and QoS requirements, enabling flexible power management for reliable V2X communication.
2Loss of time
If priority-based power allocation is implemented for multiple carriers, then communication latency is reduced, but system complexity increases
Solution Approach 1:
The network device performs preliminary configuration by assigning priority levels and power values to each BWP before transmission begins. This pre-configuration of power allocation parameters allows the terminal device to quickly execute power distribution without complex real-time calculations, reducing latency while maintaining manageable system complexity through structured advance planning.
Solution Approach 2:
The patent changes power allocation parameters (power values, priority levels) based on BWP characteristics and QoS requirements. By adjusting these parameters dynamically according to transmission needs, the system achieves low-latency communication for high-priority BWPs while managing overall system complexity through parameter-based control mechanisms.
Data Source
AI summary
A method by which a first device (100) performs sidelink transmission is provided. The method can comprise the steps of: determining a priority of a first carrier including a plurality of BWPs; allocating transmission power for the first carrier on the basis of the priority; and performing sidelink transmission through the plurality of BWPs on the basis of the transmission power.