Sidelink Resource Allocation in Unauthorized Spectrum Using Interlaces
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Solution Overview
Problem
The limited availability of authorized spectrum resources for 5G vehicle-to-everything (V2X) technology necessitates the use of unauthorized spectrums, which must comply with regulatory requirements such as occupied channel bandwidth (OCB) and power spectral density (PSD), leading to unreliable sidelink resource allocation processes and reduced transmission success rates.
Innovation Solution
A sidelink resource allocation method and apparatus that involves sending first indication information to a second device, correlating with interlaces or sub-channels within a resource pool in the unauthorized spectrum, to improve resource allocation reliability and enhance transmission success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If unauthorized spectrum is used to expand available spectrum resources, then spectrum availability is improved, but resource allocation reliability deteriorates due to regulatory compliance requirements
Solution Approach 1:
The resource pool is segmented into multiple interlaces, where each interlace represents a set of non-contiguous resource blocks. This segmentation allows the system to comply with OCB requirements by ensuring that resources within each interlace are distributed across different frequency locations, thereby reducing concentrated interference and improving allocation reliability in unauthorized spectrum.
Solution Approach 2:
The patent introduces new parameters for interlace-based resource allocation, including interlace index, resource block offset, and allocation pattern. These parameter changes enable flexible configuration of resource distribution patterns that can adapt to different regulatory requirements while maintaining reliable resource allocation in unauthorized spectrum.
2Reliability
If interlace-based resource allocation is implemented, then transmission success rate is improved, but system complexity increases
Solution Approach 1:
The resource pool is pre-configured with multiple interlaces, each having predetermined resource block patterns and indices. This preliminary structuring allows devices to quickly select and allocate resources without complex real-time calculations, thereby improving transmission success rate while minimizing the increase in system complexity.
Solution Approach 2:
The patent introduces an interlace index as an intermediary parameter that simplifies resource identification. Instead of directly managing complex resource block assignments, the system uses interlace indices to reference pre-defined resource patterns, reducing the computational complexity while maintaining reliable transmission.
Data Source
AI summary
The present disclosure provides a sidelink resource allocation method and apparatus in an unauthorized spectrum, and a storage medium. The method includes: sending first indication information to a second device, where the first indication information includes resource allocation information, and the resource allocation information is correlated with an interlace included in a resource pool for a sidelink in the unauthorized spectrum. According to the present disclosure, a reliability of a sidelink resource allocation process in the unauthorized spectrum can be effectively improved based on the first indication information, thereby effectively enhancing a transmission success rate of sidelink data packets.