Sidelink Resource Block Interlace Alignment on Shared Spectrum
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Solution Overview
Problem
Sidelink transmissions in wireless communication systems face a mismatch between radio resources and resource block interlaces, leading to inefficiencies in resource allocation and transmission management.
Innovation Solution
A method where a wireless device selects a resource block interlace for sidelink transmissions based on a message from the base station, ensuring alignment with the quantity of subchannels, allowing for efficient mapping and transmission of sidelink communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sidelink transmissions use resource block interlaces based on quantity of subchannels from base station messages, then resource allocation alignment is improved, but device complexity increases due to selection and mapping procedures
Solution Approach 1:
The base station pre-configures and indicates the RB interlace to the wireless device through a message before the actual sidelink transmission occurs. This preliminary indication allows the device to select the appropriate RB interlace in advance, ensuring alignment between sidelink transmissions and available radio resources without complex real-time decisions.
Solution Approach 2:
The RB interlace selection mechanism acts as an intermediary between the base station's resource allocation and the sidelink transmission. The base station's message about the RB interlace serves as a mediator that translates network resource availability into device-specific transmission parameters, simplifying the mapping process.
2Productivity
If wireless devices select RB interlaces for sidelink transmissions, then transmission efficiency is improved, but resource management complexity increases
Solution Approach 1:
The base station provides preliminary indication of the RB interlace through a message before the wireless device performs sidelink transmission. This advance information allows the device to efficiently select and map transmission resources without complex real-time resource management decisions.
Solution Approach 2:
The wireless device autonomously selects the RB interlace for its sidelink transmission based on the base station's indication. The device independently maps its transmission resources to the indicated RB interlace, performing self-service resource allocation without requiring complex centralized coordination for each transmission.
Data Source
AI summary
A first wireless device may communicate with a second wireless device using sidelink resources. For a sidelink transmission on a shared spectrum, a quantity of subchannels of a sidelink resource pool (RP) may be used for indicating a resource block (RB) interlace.