Sidelink Frequency Resource Allocation with Device-Specific Bandwidth Parts
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Solution Overview
Problem
Existing vehicle-to-everything (V2x) communication systems face challenges in managing energy consumption and complexity for pedestrian devices due to high processing requirements and narrow bandwidth configurations, while vehicle-mounted devices require wider bandwidths for data throughput, leading to inefficient resource allocation and increased energy use.
Innovation Solution
Configuring sidelink devices with different bandwidth parts (BWP) based on device type, where handheld devices with energy-saving requirements use a narrower BWP, and vehicle-mounted devices use a wider BWP, allowing for selective resource allocation and communication within the narrower BWP resource pool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a narrow bandwidth configuration is used for pedestrian devices to reduce energy consumption and complexity, then energy efficiency is improved, but communication compatibility with vehicle-mounted devices deteriorates
Solution Approach 1:
The system segments the communication resource pool into multiple bandwidth parts (BWPs) with different bandwidth configurations. Pedestrian devices are assigned to a first BWP with narrower bandwidth for energy efficiency, while vehicle-mounted devices use a second BWP with wider bandwidth for high data throughput. This segmentation allows each device type to operate in its optimal bandwidth range without compromising compatibility.
Solution Approach 2:
The patent introduces a new dimension of resource allocation by configuring different bandwidth parts along the frequency dimension. Instead of using a single unified bandwidth for all devices, the system creates multiple frequency domain resources (first BWP and second BWP) that can be selectively activated based on device type, enabling both energy-efficient narrowband operation and high-performance wideband communication to coexist.
2Productivity
If a wide bandwidth configuration is used for vehicle-mounted devices to increase data throughput, then communication performance is improved, but energy consumption increases
Solution Approach 1:
The communication resource pool is segmented into multiple bandwidth parts, allowing vehicle-mounted devices to access a second BWP with wider bandwidth when high data throughput is required, while pedestrian devices operate in a first BWP with narrower bandwidth to minimize energy consumption. This segmentation enables each device type to utilize the appropriate bandwidth level for its specific requirements.
Solution Approach 2:
Different bandwidth configurations are assigned to different device types based on their specific needs. Vehicle-mounted devices receive wider bandwidth allocation optimized for high data throughput applications, while pedestrian devices receive narrower bandwidth allocation optimized for energy efficiency. This local quality approach ensures that resource characteristics are matched to the specific operational requirements of each device category.
3Use of energy by moving object
If device-specific bandwidth configurations are implemented to optimize energy use, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The bandwidth part configuration mechanism serves multiple functions simultaneously: it enables energy-efficient narrowband operation for pedestrian devices, supports high-performance wideband communication for vehicle-mounted devices, and provides a unified resource management framework that can be applied across all sidelink devices. This multi-functionality reduces the need for separate management mechanisms for different device types.
Solution Approach 2:
The system implements dynamic bandwidth part switching capabilities, allowing devices to transition between different BWP configurations based on their operational state, device type, and communication requirements. This dynamic approach enables flexible adaptation to changing conditions while maintaining a relatively simple base configuration structure.
Data Source
AI summary
A method for determining a frequency domain resource, including: determining, by a first type of sidelink device, a target device type of a receiving end device for sidelink communication; and determining a target frequency domain resource for sidelink communication with the receiving end device according to the target device type.