Sidelink Control Signaling for Synchronized Resource Allocation

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Solution Overview

Problem

In sidelink communication systems, there is a lack of consistent understanding among the transmitter, receiver, and control node regarding sidelink transmission methods, leading to unreliable resource utilization and increased interference due to unsynchronized resource allocation and retransmission timing.

Innovation Solution

A method for determining indication information in sidelink control signaling based on sidelink resource control signaling to ensure that the transmitter, receiver, and control node have a consistent understanding of the sidelink transmission method, thereby ensuring reliable and efficient resource utilization by defining transmission resources and retransmission timing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If sidelink control signaling is transmitted independently without coordination with resource control signaling, then transmission flexibility is improved, but scheduling errors and interference increase due to inconsistent understanding of transmission methods

Engineering Contradiction:

Improvetransmission flexibilityVSAvoidscheduling accuracy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent merges sidelink control signaling with sidelink resource control signaling by determining indication information in the control signaling based on indication information in the resource control signaling. This integration ensures that both transmission method and resource allocation are coordinated, resolving the contradiction between transmission flexibility and scheduling accuracy.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements feedback mechanisms where the receiver sends acknowledgment or negative acknowledgment information back to the transmitter. This feedback loop ensures that both parties have consistent understanding of the transmission method and resource allocation, improving scheduling accuracy while maintaining flexibility through adaptive retransmission based on feedback results.

Inventive Principle:

Principle #23Feedback

2Productivity

If multiple transmission resources are allocated without precise indication mechanism, then resource utilization efficiency is improved, but scheduling errors increase due to ambiguous resource selection

Engineering Contradiction:

Improveresource utilization efficiencyVSAvoidresource indication accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The patent segments the resource allocation process into distinct stages: resource pool configuration by the control node, specific resource indication through indication information in sidelink control signaling, and final resource selection by the transmitter. This segmentation allows efficient resource utilization through pool-based allocation while maintaining precise resource indication through structured signaling mechanisms.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The control node performs preliminary action by configuring a pool of transmission resources in advance through sidelink resource control signaling. This pre-configuration enables efficient resource utilization by having resources ready before transmission needs arise, while the subsequent indication information provides precise guidance for selecting specific resources from the pre-configured pool.

Inventive Principle:

Principle #10Preliminary action

3Speed

If retransmission timing is not synchronized between transmitter and receiver, then transmission speed is improved, but reliability decreases due to inconsistent retransmission understanding

Engineering Contradiction:

Improvetransmission speedVSAvoidretransmission coordination

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent implements periodic action through structured HARQ feedback timing where the receiver sends acknowledgment or negative acknowledgment at predetermined intervals after receiving transmission data. This periodic feedback mechanism ensures both transmitter and receiver have synchronized understanding of retransmission timing, maintaining reliability while enabling efficient retransmission cycles that preserve transmission speed.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS12501450B2Sidelink transmission method, sidelink transmission apparatus, and terminal

Publication Date: 2025.12.16 VIVO MOBILE COMM CO LTD

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.