Carrier Selection via Bandwidth Part CBR Measurement
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Solution Overview
Problem
In the context of 5G wireless communication systems, particularly in NR sidelink and NR V2X scenarios, there is a need for efficient channel busy ratio (CBR) measurement and carrier selection across multiple bandwidth parts (BWPs) to optimize sidelink communication, as existing methods do not effectively manage congestion and resource allocation in multi-BWP environments.
Innovation Solution
A method for a user equipment (UE) to perform CBR measurement across multiple BWPs and determine a representative CBR value for a carrier, allowing for intelligent carrier selection and resource allocation to optimize sidelink transmission, including selecting a BWP based on measured CBR values to avoid congested channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CBR measurement is performed across multiple BWPs to identify congested channels, then communication reliability is improved, but measurement complexity and processing time increase
Solution Approach 1:
The patent divides the carrier into multiple bandwidth parts (BWPs) and performs CBR measurement separately for each BWP. This segmentation allows the system to identify congested channels at a granular level, improving reliability by selecting non-congested BWPs for transmission while managing complexity through structured, partitioned measurement procedures.
2Productivity
If carrier selection is optimized using CBR values to avoid congested channels, then sidelink transmission efficiency is improved, but the time required for carrier evaluation and selection increases
Solution Approach 1:
The patent performs CBR measurements and evaluates carrier conditions in advance before actual sidelink transmission begins. By pre-identifying non-congested carriers and BWPs, the system prepares transmission resources proactively, reducing the time required during actual data transmission and improving overall productivity.
3Productivity
If multiple BWPs are monitored for CBR to enable intelligent carrier selection, then resource allocation efficiency is improved, but the energy consumption for measurement and processing increases
Solution Approach 1:
The patent applies different measurement and monitoring strategies to different BWPs based on their congestion characteristics. Instead of uniformly monitoring all BWPs with equal intensity, the system adapts measurement resources to local conditions, focusing efforts on BWPs that require closer monitoring while reducing measurements on already-clear channels, thereby improving resource allocation efficiency while managing energy consumption.
Data Source
AI summary
Provided are a method for performing sidelink communication by a first apparatus (100) and an apparatus supporting same. The method may comprise the steps of: performing channel busy ratio (CBR) measurement on at least one bandwidth part (BWP) associated with a first sidelink service, among a plurality of BWPs included in a first carrier; and determining a CBR value of the first carrier, on the basis of the measured CBR value of at least one BWP associated with the first sidelink service.