Carrier CBR Determination Using Resource Pool Measurements
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Solution Overview
Problem
Existing technologies face challenges in determining the channel busy ratio (CBR) of carriers during carrier selection and/or carrier reselection in sidelink communication, which affects the efficiency of resource allocation in communication systems.
Innovation Solution
A method and device for determining CBR by measuring the CBR of resource pools on activated bandwidth parts (BWPs) of carriers, allowing for carrier selection and/or reselection based on various CBR calculation methods, including averaging, selecting maximum/minimum values, or using network-provided indications for default resource pools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal measures CBR on multiple resource pools to improve carrier selection accuracy, then the measurement precision improves, but the device complexity and measurement time increase
Solution Approach 1:
The patent extracts the CBR measurement function to operate independently on each resource pool separately, then combines the results through defined rules (averaging, maximum, minimum, or random selection). This extraction allows precise measurement on individual resource pools while managing overall complexity through modular processing.
Solution Approach 2:
The patent segments the CBR measurement process into independent measurements on each resource pool configured on activated BWPs, then combines these segmented measurements using network-configured rules. This segmentation enables precise per-resource-pool measurement while the combination rules control the overall complexity.
2Reliability
If the terminal measures CBR on all resource pools to reduce resource allocation conflicts, then the reliability of carrier selection improves, but the loss of time increases
Solution Approach 1:
The network device pre-configures the BWP and resource pool information, as well as the rules for combining CBR measurements (averaging, maximum, minimum, or random selection). This preliminary configuration enables the terminal to perform measurements efficiently without real-time decision complexity, improving reliability while reducing time loss.
Solution Approach 2:
The network device receives CBR measurement results from the terminal and uses this feedback to optimize resource pool configuration and carrier selection strategies. This feedback mechanism improves carrier selection reliability over time while the network manages the time efficiency through intelligent configuration.
3Ease of operation
If the terminal autonomously selects resource pools without network guidance to improve ease of operation, then the ease of operation improves, but the manufacturing precision of resource allocation deteriorates
Solution Approach 1:
The network device acts as an intermediary by providing configured rules for CBR combination (averaging, maximum, minimum, or random selection) and resource pool configuration. This intermediary guidance enables autonomous terminal operation while maintaining precise resource allocation through network-defined parameters and selection criteria.
Data Source
AI summary
A method for determining a channel busy ratio (CBR) is performed by a terminal, and includes: in response to a condition for triggering carrier selection or carrier reselection being met, determining a CBR corresponding to a resource pool; wherein an activated partial bandwidth (BWP) of a carrier is configured with at least one resource pool; and determining a CBR of the carrier according to the CBR corresponding to the resource pool.