NR-V2X User Equipment Resource Selection for Aperiodic Traffic

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In NR-V2X, the existing resource selection mechanism for sidelink transmission is inadequate for aperiodic traffic, as it relies on mechanisms designed for periodic traffic, leading to potential resource collisions and the need for a new resource reservation mechanism.

Innovation Solution

A user equipment is equipped with a control unit that selects transmission resources from a candidate resource selection window and performs resource reservation signaling, excluding resources already reserved by other user equipment, to avoid collisions and manage both periodic and aperiodic traffic effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the existing resource selection mechanism for periodic traffic is used in NR-V2X, then the mechanism is simple and well-defined, but it cannot effectively handle aperiodic traffic and leads to resource collisions

Engineering Contradiction:

Improvetraffic type adaptabilityVSAvoidresource collision avoidance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces dynamic resource selection mechanisms that adapt to different traffic patterns (periodic and aperiodic). The system dynamically adjusts resource reservation and selection based on traffic characteristics, moving away from static periodic assumptions to flexible dynamic allocation that can handle varying traffic demands without collisions

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent modifies key resource selection parameters including the resource selection window size, sensing window duration, and resource reservation intervals to accommodate both periodic and aperiodic traffic. By changing these parameters dynamically based on traffic type, the system achieves versatility while maintaining collision avoidance reliability

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If a new resource reservation mechanism is defined for aperiodic traffic, then traffic handling capability is improved, but the system complexity increases

Engineering Contradiction:

Improveaperiodic traffic supportVSAvoidresource selection mechanism complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent designs a universal resource selection framework that can handle both periodic and aperiodic traffic through a common set of procedures and parameters. The same basic mechanism is used for both traffic types, with only parameter values changing, rather than requiring separate mechanisms, thus reducing overall system complexity while maintaining versatility

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements preliminary resource reservation and sensing procedures that prepare the system in advance for both periodic and aperiodic traffic patterns. By performing preliminary actions such as resource sensing and reservation before actual transmission, the system simplifies the real-time decision-making process while supporting diverse traffic types

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12010656B2User equipment and communication method

Publication Date: 2024.06.11 NTT DOCOMO INC

AI summary

Provided is a user equipment including a transmitting unit that transmits a packet for terminal-to-terminal direct communication and a control unit that selects a transmission resource for transmitting the packet from candidate resources in a resource selection window having a predetermined range.