Sidelink Resource Indication for Reliable Transmission Alignment
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Solution Overview
Problem
In sidelink communication systems, there is a lack of consistent understanding among transmitters, receivers, and control nodes regarding sidelink transmission methods, leading to unreliable resource utilization and increased interference due to misaligned resource allocation and HARQ feedback mechanisms.
Innovation Solution
A method for determining indication information in sidelink control signaling is defined, ensuring that transmitters, receivers, and control nodes have a consistent understanding of sidelink transmission resources, which includes determining indication information based on sidelink resource control signaling and indicating one transmission resource in a target transmission resource.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sidelink control signaling and sidelink resource control signaling use independent indication methods, then each signaling can operate autonomously, but inconsistency in understanding transmission resources occurs among TX UE, RX UE, and control node
Solution Approach 1:
The patent merges the indication information from sidelink control signaling and sidelink resource control signaling by making the resource indication in sidelink control signaling point to the target transmission resource provided by sidelink resource control signaling. This combination ensures that both TX UE and RX UE derive the same resource understanding from coordinated signaling, eliminating inconsistency while maintaining autonomous operation capabilities.
2Ease of operation
If sidelink resources are configured by control node using SL DCI or SL CG, then resource allocation is centralized and controllable, but scheduling errors and interference increase due to lack of consistent understanding
Solution Approach 1:
The patent implements a feedback mechanism where the sidelink control signaling carries indication information that references the target transmission resource from sidelink resource control signaling. This creates a verification loop that ensures both TX UE and RX UE have consistent understanding of the allocated resources, reducing scheduling errors and interference while maintaining centralized control.
3Device complexity
If transmission resources are indicated without cross-signaling verification, then signaling complexity is reduced, but resource allocation errors and interference increase
Solution Approach 1:
The patent applies preliminary action by having the control node first provide target transmission resources through sidelink resource control signaling, and then the sidelink control signaling indicates one specific resource from this pre-provided set. This two-stage approach verifies resource consistency before actual transmission, reducing scheduling errors and interference without significantly increasing overall signaling complexity.
Data Source
AI summary
A sidelink transmission method and a terminal are provided. The sidelink transmission method includes: determining indication information in sidelink control signaling; and performing transmission based on the indication information. The indication information in the sidelink control signaling is determined based on indication information in sidelink resource control signaling, or the indication information in the sidelink control signaling indicates one transmission resource in a target transmission resource. The target transmission resource is provided by the sidelink resource control signaling.