V2X Resource Allocation via RSRP and RSSI Pattern Selection

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently allocating resources among multiple wireless devices to prevent communication interference and ensure effective data transmission.

Innovation Solution

A wireless transmit/receive unit (WTRU) measures RSRP and RSSI levels for multiple resource patterns, excludes patterns with reserved resources by other WTRUs, and selects a pattern with the lowest RSSI value and QoS requirements for data transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple wireless devices share available resources in a wireless communication system, then resource utilization efficiency is improved, but communication interference increases

Engineering Contradiction:

Improveresource utilization efficiencyVSAvoidcommunication interference

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the shared wireless resources into distinct patterns (e.g., time-frequency resources) and allocates specific patterns to different WTRUs. Each WTRU measures RSRP and RSSI for multiple candidate patterns and selects one pattern for transmission, thereby dividing the resource pool into manageable segments that reduce interference while maintaining high utilization.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the parameters used for resource selection by introducing RSRP threshold comparisons and RSSI-based pattern ranking. WTRUs adjust their resource selection based on measured signal strength parameters, excluding patterns where RSRP exceeds a threshold and selecting from remaining patterns based on lowest RSSI values, thereby dynamically optimizing resource allocation to balance utilization and interference.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If a WTRU selects resources based on RSRP and RSSI measurements, then transmission reliability is improved, but resource allocation complexity increases

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidresource allocation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by having WTRUs pre-measure and evaluate multiple candidate resource patterns before actual data transmission. WTRUs perform RSRP and RSSI measurements on candidate patterns in advance, exclude patterns failing threshold criteria, and pre-select the best pattern based on lowest RSSI. This preliminary resource selection ensures reliable transmission while managing complexity through structured pre-evaluation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where WTRUs continuously monitor RSRP and RSSI values of candidate patterns and adjust their resource selection accordingly. The system uses feedback from signal quality measurements to dynamically update pattern exclusions and selections, ensuring transmission reliability while the structured feedback loop manages complexity through standardized evaluation criteria.

Inventive Principle:

Principle #23Feedback

3Object-affected harmful factors

If a WTRU excludes patterns with high RSRP from other WTRUs, then interference reduction is improved, but available resource options decrease

Engineering Contradiction:

Improveinterference reductionVSAvoidresource option flexibility

Core Design Contradiction:

Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The patent uses parameter changes by establishing an RSRP threshold that dynamically filters candidate patterns. WTRUs compare measured RSRP values against this threshold and exclude only those patterns exceeding it, thereby reducing interference from strong signals while preserving patterns with acceptable RSRP levels. This threshold-based parameter change maintains resource option flexibility by not excluding all patterns uniformly.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent converts the potentially harmful effect of high RSRP signals into a beneficial filtering mechanism. By using RSRP threshold comparisons, the system identifies and excludes only the problematic high-interference patterns while retaining patterns with lower RSRP that can be safely used. This transforms the harmful interference indicator into a useful selection criterion that reduces interference while preserving resource flexibility.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS20250168824A1Wireless resource allocation schemes in vehicle-to-everything (V2X) communication

Publication Date: 2025.05.22 INTERDIGITAL PATENT HOLDINGS INC

AI summary

Methods, devices, and systems for resource allocation are disclosed herein. Specifically, a wireless transmit receive unit (WTRU) may measure a reference signal received power (RSRP) level and a received signal strength indicator (RSSI) value of one or more resources in each of a plurality of patterns. The WTRU may exclude, from the selection, each pattern for which at least one resource in the pattern is reserved by another WTRU and has an RSRP greater than a threshold. On a condition that at least one of the plurality of patterns is not excluded, the WTRU may select a pattern with a lowest pattern RSSI value and a one or more resources satisfying a quality of service (QoS) requirement of data of the WTRU. The WTRU may then transmit the data of the WTRU using the selected pattern.