Full-Duplex Random Access Resource Configuration for Interference Control

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently performing random access procedures in full duplex (FD) environments, where both uplink and downlink communications occur in the same frequency band or component carrier, leading to interference and suboptimal resource utilization.

Innovation Solution

The method involves determining whether FD communications are configured during the resources for a random access procedure and adjusting parameters such as initial transmit power, power ramping, and random access formats based on this configuration to optimize communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If full duplex communications are configured during random access resources, then resource utilization improves, but interference increases

Engineering Contradiction:

Improveresource utilizationVSAvoidinterference

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by configuring full duplex communications in specific time-frequency resources while keeping other resources dedicated to random access. The network device determines whether to configure FD communications during random access resources based on specific conditions, creating localized FD regions that optimize resource utilization without causing system-wide interference. This selective configuration allows simultaneous uplink and downlink transmissions in designated areas while protecting random access procedures in other areas.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements dynamics by making the FD configuration dynamic rather than static. The network device can adaptively determine whether to configure FD communications during random access resources based on current system conditions, traffic load, and interference levels. This dynamic configuration allows the system to optimize resource utilization when conditions permit while avoiding interference when random access reliability is prioritized.

Inventive Principle:

Principle #15Dynamics

2Productivity

If random access procedures are performed in full duplex environments, then communication efficiency improves, but hearability deteriorates

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidhearability

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The patent applies segmentation by dividing time-frequency resources into distinct segments: some resources are allocated for random access procedures while others are allocated for full duplex communications. The network device determines specific resources for random access and configures FD communications in different resources, ensuring that random access messages are transmitted and received in interference-free segments, thereby maintaining hearability while improving overall communication efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses the network device as an intermediary that manages and coordinates random access procedures and full duplex communications. The network device determines whether FD communications are configured during random access resources and adjusts parameters such as initial transmit power, power ramping, and random access formats to ensure that random access messages remain hearable even in FD environments.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If full duplex communications are configured during random access resources, then resource utilization improves, but signal quality deteriorates

Engineering Contradiction:

Improveresource utilizationVSAvoidsignal quality

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies parameter changes by adjusting random access parameters based on whether FD communications are configured. The network device determines FD configuration status and modifies parameters such as initial transmit power, power ramping step, and random access formats to compensate for potential signal quality degradation. This allows the system to maintain signal quality while utilizing FD resources effectively.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250317267A1Techniques for performing random access in full duplex wireless communications

Publication Date: 2025.10.09 QUALCOMM INC

AI summary

Aspects described herein relate to determining whether full duplex (FD) communications are configured during resources for communicating one or more messages of a random access procedure, where the FD communications comprising uplink communications and downlink communications occurring in a same frequency band, and responsive to the determining whether the FD communications are configured during the resources, transmitting the one or more messages of the random access procedure using the resources.