Adaptive Sidelink CBR Measurement for Congestion Control
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Solution Overview
Problem
Existing sidelink communication systems face increased communication delay and decreased throughput due to the use of a fixed duration for channel busy ratio (CBR) measurements across varying sidelink subcarrier spacings and device capabilities, leading to inefficient congestion control.
Innovation Solution
Dynamic adjustment of measurement periods based on sidelink subcarrier spacing and device capability to determine congestion control parameters, such as CBR, improving communication performance and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed duration is used for CBR measurements across all sidelink subcarrier spacings and device capabilities, then measurement simplicity is maintained, but communication delay increases and throughput decreases
Solution Approach 1:
The patent applies dynamics by making the CBR measurement duration adaptive rather than fixed. The measurement duration is dynamically adjusted based on the sidelink subcarrier spacing configuration and device capability, allowing the system to optimize throughput for different scenarios while maintaining manageable complexity through standardized adjustment rules.
Solution Approach 2:
The patent changes the measurement parameter (duration) based on other parameters (subcarrier spacing and device capability). Specifically, different measurement durations are assigned depending on the subcarrier spacing configuration, thereby optimizing throughput for each configuration without requiring completely separate measurement mechanisms.
2Loss of time
If a fixed duration is used for CBR measurements, then implementation simplicity is maintained, but communication delay increases
Solution Approach 1:
The measurement duration is made dynamic and adaptive based on subcarrier spacing and device capability, reducing communication delay for faster subcarrier spacings while maintaining simpler operation for standard configurations through standardized adjustment rules.
Solution Approach 2:
The measurement duration parameter is changed according to the subcarrier spacing parameter, allowing the system to reduce measurement time (and thus communication delay) for configurations that require faster response, while maintaining operational simplicity through defined relationships between parameters.
3Measurement precision
If CBR measurement duration is increased for all devices, then measurement precision is improved, but power consumption increases
Solution Approach 1:
The patent applies local quality by tailoring the measurement duration to specific device capabilities and subcarrier spacing configurations rather than using a uniform duration for all devices. This allows each device to perform measurements with appropriate precision for its capability while minimizing unnecessary power consumption.
Solution Approach 2:
The measurement duration parameter is adjusted based on device capability and subcarrier spacing, allowing the system to achieve sufficient measurement precision for each device type without uniformly increasing power consumption across all devices.
Data Source
AI summary
Wireless communications are described for sidelink congestion control. Sidelink congestion control may be performed based on a processing capability of a wireless device and/or sidelink subcarrier spacing.