Interlaced Sidelink Resource Allocation Under OCB and PSD Limits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for effective resource allocation and waveform design to facilitate sidelink communication on an unlicensed spectrum, ensuring compliance with regulatory requirements such as occupied channel bandwidth (OCB) and maximum power spectrum density (PSD) constraints.
Innovation Solution
Implementing an interlace-based waveform for sidelink communication, where each interlace consists of evenly-spaced resource blocks (RBs) in the frequency domain, with the number of interlaces determined by subcarrier spacing, and using sidelink control information (SCI) to schedule data transmission on specific interlaces, ensuring compliance with OCB and PSD regulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional resource allocation methods are used on unlicensed spectrum, then resource utilization may be improved, but compliance with OCB and PSD regulatory requirements cannot be ensured
Solution Approach 1:
The patent segments the available frequency resources into multiple interlaces, where each interlace consists of evenly-spaced resource blocks. This segmentation allows the system to selectively activate a specific number of interlaces based on OCB requirements, while controlling the power spectral density across each interlace to meet PSD constraints. The segmented structure enables flexible resource allocation that simultaneously satisfies both regulatory requirements and resource utilization goals.
2Area of stationary object
If power boosting is increased to enhance coverage, then coverage area may be improved, but power spectrum density constraints may be violated
Solution Approach 1:
The patent applies local quality by distributing power across multiple interlaces with different frequency locations rather than concentrating power in a single contiguous block. Each interlace contains evenly-spaced resource blocks that can be activated independently with controlled power levels. This allows the system to achieve power boosting for coverage enhancement while maintaining power spectrum density within regulatory limits through the distributed frequency structure.
3Productivity
If more interlaces are activated to increase data transmission capacity, then throughput may be improved, but occupied channel bandwidth requirements may not be met
Solution Approach 1:
The patent implements dynamic resource allocation where the number of activated interlaces is adjusted based on channel conditions, traffic requirements, and OCB constraints. The system can dynamically select which interlaces to activate and how many resource blocks to allocate within each interlace, enabling flexible adaptation to meet both throughput goals and occupied channel bandwidth requirements without violating regulatory constraints.
Data Source
AI summary
The present disclosure is related to methods and apparatuses. According to some embodiments of the disclosure, a method includes: receiving sidelink control information (SCI) on a first interlace of a first set of interlaces on a carrier, wherein the SCI may schedule a second set of interlaces on the carrier for transmitting data; and receiving, based on the SCI, the data on the second set of interlaces, wherein each interlace of the first set of interlaces and the second set of interlaces may include evenly-spaced resource blocks (RBs) in frequency domain.