Sidelink Groupcast COT Sharing with Multi-Indicator Resource Allocation
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Solution Overview
Problem
Current wireless communication systems lack a mechanism for efficient COT sharing among UEs in sidelink groupcast communications, particularly in unlicensed spectra, due to limitations in resource allocation and identification of multiple group members.
Innovation Solution
A COT sharing mechanism is introduced for sidelink groupcast, utilizing indicators to allocate frequency and time resources among group members, including pre-configured or signaled indicators for PRBs, interlaces, and subchannels, with sensing operations to ensure efficient resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If COT sharing mechanism is implemented for sidelink groupcast, then resource allocation efficiency is improved, but device complexity increases due to multiple indicators and sensing operations
Solution Approach 1:
The resource allocation is segmented into multiple independent indicators: frequency resource indicators (PRBs, interlaces, subchannels) and time resource indicators (time slots, symbols). Each indicator can be independently configured and managed, allowing efficient resource allocation while maintaining clear structure for device implementation.
Solution Approach 2:
The patent introduces a new dimension of resource allocation by adding frequency domain indicators (PRBs, interlaces, subchannels) to the traditional time domain allocation. This multi-dimensional approach enables more granular and efficient resource sharing among groupcast members without significantly increasing processing complexity.
2Manufacturing precision
If multiple indicators are used for frequency and time resource allocation, then resource allocation precision is improved, but information overhead increases
Solution Approach 1:
The resource allocation information is segmented into multiple specific indicators: frequency resource indicators (PRBs, interlaces, subchannels) and time resource indicators (time slots, symbols). Each indicator targets a specific resource dimension, providing precise allocation while organizing information in a structured manner that reduces redundant signaling.
Solution Approach 2:
The patent enables selective indication of resource allocation parameters. Not all indicators need to be transmitted in every message - only the relevant ones for the current allocation scenario are signaled, reducing information overhead while maintaining allocation precision when needed.
Data Source
AI summary
Embodiments of the present disclosure relate to methods and apparatuses of a channel occupancy time (COT) sharing mechanism for a sidelink groupcast. According to some embodiments of the disclosure, a user equipment (UE) may include a transceiver; and a processor coupled to the transceiver. The processor may be configured to: initialize a channel occupancy time (COT) corresponding to a channel access priority class (CAPC) level or a traffic priority level; and transmit at least one of sidelink control information (SCI) or a data transmission associated with the SCI on a sidelink during first channel occupancy duration of the COT, wherein the SCI includes frequency and time resource indication information.