Sidelink Resource Pool Segmentation for Positioning Signal Congestion Control
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting sidelink positioning reference signals, particularly in managing congestion and resource allocation in sidelink communication networks, which affects the accuracy and reliability of positioning services.
Innovation Solution
The method involves configuring dedicated sidelink resource pools for transmitting Sidelink Positioning Reference Signals (SL-PRS) and Physical Sidelink Shared Channel (PSSCH), with congestion control mechanisms that evaluate and measure SL Channel Occupancy Ratio (CR) and SL Channel Busy Ratio (CBR) to optimize resource usage and minimize congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated sidelink resource pools are configured for SL-PRS transmission, then positioning accuracy and reliability are improved, but device complexity and resource allocation management difficulty increase
Solution Approach 1:
The patent divides the sidelink resource pool into separate dedicated pools for SL-PRS transmission and shared pools for PSSCH transmission. This segmentation allows independent congestion control and resource management for positioning signals, ensuring reliable positioning service while maintaining manageable system complexity through modular resource allocation structures.
2Productivity
If congestion control mechanisms with multiple processing times are implemented, then resource allocation efficiency is improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent implements dynamic congestion control with multiple processing times (k1 for SL-PRS, k2 for PSSCH) where the system adapts the timing based on signal type and channel conditions. This dynamic approach optimizes resource allocation efficiency by applying appropriate processing delays for different transmission types while managing device complexity through standardized processing parameters.
Solution Approach 2:
The patent changes the congestion control parameters (processing times k1 and k2) based on the transmission type and channel conditions. By adjusting these parameters dynamically, the system achieves efficient resource allocation for both positioning and data transmission while keeping the complexity manageable through parameter-based control rather than structural complexity.
3Device complexity
If SL-PRS and PSSCH share the same resource pool, then device complexity is reduced, but positioning accuracy deteriorates due to resource interference
Solution Approach 1:
The patent segments the resource pools into dedicated SL-PRS pools and shared PSSCH pools to prevent resource interference. This segmentation maintains positioning measurement accuracy by ensuring dedicated resources for positioning signals while reducing overall device complexity through standardized pool management procedures.
4Measurement precision
If congestion control processing time is increased, then resource allocation accuracy is improved, but transmission delay increases
Solution Approach 1:
The patent applies different processing times (k1 for SL-PRS, k2 for PSSCH) based on the transmission type and channel conditions. This dynamic adjustment allows the system to achieve accurate congestion control for positioning signals while minimizing transmission delay for data communication, balancing accuracy and time efficiency through adaptive parameter selection.
Data Source
AI summary
Methods, systems, and apparatuses are provided for a first device in a wireless communication system comprising receiving configuration for configuring a first dedicated sidelink resource pool for transmitting a Sidelink Positioning Reference Signal (SL-PRS) and a second sidelink resource pool for at least transmitting Physical Sidelink Shared Channel (PSSCH), using, when the first device attempts to transmit PSSCH and a second SL-PRS in the second sidelink resource pool in slot m, SL Channel Occupancy Ratio (CR) and SL Channel Busy Ratio (CBR) evaluated or measured or determined in slot m-k2 (in the second sidelink resource pool) for the PSSCH and the second SL-PRS, wherein k2 corresponds to a second congestion control processing time, and using, when the first device attempts to transmit a first SL-PRS in the first dedicated sidelink resource pool in slot n, SL-PRS-CR and SL-PRS-CBR evaluated or measured or determined in slot n-k1 (in the first dedicated sidelink resource pool) for the first SL-PRS, wherein k1 corresponds to a first congestion control processing time which is larger than or equal to k2.