Sidelink Resource Scheduling for Reliable V2X Repeat Transmission

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Solution Overview

Problem

The Internet of Vehicles system requires improved reliability in sidelink data transmission to support advanced Vehicle to Everything (V2X) applications, particularly in scenarios where terminal-to-terminal communication is used.

Innovation Solution

The terminal device determines resources for multiple sidelink transmissions based on first control information received from the network device, allowing for repeated data transmission to enhance reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If data is transmitted through multiple relays in a multi-hop manner, then coverage area is extended, but transmission latency increases

Engineering Contradiction:

Improvecoverage areaVSAvoidtransmission latency

Core Design Contradiction:

Area of stationary objectVSLoss of time

Solution Approach 1:

The patent pre-establishes routing information and selects relay vehicles in advance before data transmission begins. The roadside units pre-store routing tables that map destination IDs to relay vehicle identifiers, enabling immediate data forwarding without real-time routing computation, thus reducing transmission latency while maintaining extended coverage.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent dynamically selects relay vehicles based on their movement trajectories and predicted positions. The system continuously monitors relay vehicle movements and updates routing decisions in real-time, choosing relays that will be closest to the target coverage area, thereby optimizing transmission speed across expanding coverage zones.

Inventive Principle:

Principle #15Dynamics

2Area of stationary object

If data is transmitted through multiple relays, then coverage area is extended, but the number of hops increases causing more data loss

Engineering Contradiction:

Improvecoverage areaVSAvoiddata loss

Core Design Contradiction:

Area of stationary objectVSLoss of information

Solution Approach 1:

The system pre-calculates and pre-selects optimal relay vehicles based on predicted trajectories and coverage requirements. By determining the complete relay path in advance using stored routing information, the system minimizes the number of hops needed to reach extended coverage areas, thereby reducing cumulative data loss that would occur with ad-hoc relay selection.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where roadside units monitor transmission success rates and relay vehicle performance. This feedback is used to continuously optimize routing tables and relay selections, preferring relays with higher reliability metrics, thus reducing data loss while maintaining extended coverage through intelligent relay chaining.

Inventive Principle:

Principle #23Feedback

3Area of stationary object

If roadside units are densely deployed to improve coverage, then coverage area increases, but system cost increases

Engineering Contradiction:

Improvecoverage areaVSAvoidsystem cost

Core Design Contradiction:

Area of stationary objectVSQuantity of substance

Solution Approach 1:

The patent introduces mobile relay vehicles as intermediaries between roadside units and target coverage areas. These relay vehicles carry and forward data packets, effectively extending the reach of the static roadside unit network without requiring additional roadside units to be physically deployed in remote or costly locations, thus achieving expanded coverage at lower infrastructure cost.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system changes the operational parameters of existing roadside units by enabling them to dynamically select and communicate with moving relay vehicles. This parameter change allows a fixed number of roadside units to achieve variable and extended coverage areas by leveraging the mobility and positioning of relay vehicles, avoiding the need to increase the quantity of roadside units.

Inventive Principle:

Principle #35Parameter changes

4Speed

If relay vehicles are selected based on trajectory prediction, then transmission speed improves, but computational complexity increases

Engineering Contradiction:

Improvetransmission speedVSAvoidcomputational complexity

Core Design Contradiction:

SpeedVSDevice complexity

Solution Approach 1:

The patent performs trajectory prediction and relay selection in advance, storing predicted paths and pre-computed routing information in roadside units. By calculating optimal relay sequences beforehand based on predicted vehicle trajectories, the system enables fast data transmission without performing complex real-time computations during actual data forwarding, thus achieving high speed while managing computational complexity through pre-processing.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP3800954B1Method for transmitting data in internet of vehicles, and terminal device

Publication Date: 2026.04.29 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

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AI summary

A method for transmitting data in the Internet of Vehicles, and a terminal device, wherein resources used for repeated sidelink transmission may be determined, which is beneficial in improving the reliability of data transmission. The method comprises: a terminal device receiving first control information sent by a network device, the first control information being used to determine resource information used for repeated sidelink transmission; according to the first control information, the terminal device determining resources used for repeated sidelink transmission.