Uu and Sidelink Scheduling for Intra-Band Collision Resolution

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Solution Overview

Problem

User equipment (UE) is constrained from simultaneous transmission and reception on intra-band frequency resources, leading to collisions between Uu and sidelink (SL) communications with different link directions.

Innovation Solution

The UE is configured with intra-band priority configurations and time domain configurations for Uu and SL communications, allowing it to prioritize and schedule communications based on link directions to resolve collisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the UE is configured to transmit and receive on intra-band frequency resources simultaneously, then the network throughput and communication efficiency are improved, but the UE cannot simultaneously transmit and receive due to hardware constraints

Engineering Contradiction:
Improvenetwork throughputVSAvoidcommunication reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent implements dynamic resource allocation and collision resolution mechanisms where the UE adaptively switches between transmission and reception modes based on real-time scheduling decisions. The network dynamically configures time domain parameters and priority levels for different communication types (Uu vs SL), allowing the system to optimize throughput while respecting hardware constraints through flexible, real-time resource management.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes operational parameters by introducing priority configurations and time domain settings that control when transmission and reception occur. By adjusting these parameters dynamically based on traffic conditions and collision scenarios, the system achieves high throughput without violating the fundamental constraint that the UE cannot simultaneously transmit and receive on intra-band frequencies.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the UE prioritizes Uu communications over SL communications, then network connectivity is maintained, but SL communication delays increase

Engineering Contradiction:
Improvenetwork connectivityVSAvoidSL communication delay
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies different priority levels and quality-of-service parameters to different communication types (Uu versus SL). Instead of a uniform prioritization approach, the system configures specific priority values for each communication type based on local requirements, allowing critical Uu communications to maintain reliability while SL communications receive appropriate timing guarantees for their specific use cases.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent implements preliminary configuration of priority levels and time domain parameters before communications occur. By pre-configuring these parameters based on expected traffic patterns and requirements, the system prepares the UE to handle both Uu and SL communications efficiently, reducing actual transmission delays through advance resource reservation and scheduling decisions.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If the UE uses the same frequency band for both Uu and SL communications, then spectrum efficiency is improved, but scheduling collisions occur between different link directions

Engineering Contradiction:
Improvespectrum efficiencyVSAvoidscheduling complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the time domain into different slots and symbols with specific configurations for Uu and SL communications. By dividing the frequency-time resource space into distinct segments with different priority levels and access rules, the system achieves spectrum efficiency through intra-band operation while managing scheduling complexity through structured, rule-based resource allocation.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS20250220642A1Scheduling collision resolution for sidelink and uu communications
Publication Date: 2025.07.03 QUALCOMM INC
  • US20250220642A1 patent drawing
  • US20250220642A1 patent drawing
  • US20250220642A1 patent drawing

AI summary

A method of wireless communication performed at a user equipment (UE) includes: receiving a first time domain configuration for a Uu component carrier (CC); receiving a second time domain configuration for a sidelink (SL) resource pool, wherein the Uu CC and the SL resource pool are within a same frequency band; and communicating, based on the first time domain configuration, the second time domain configuration, and an intra-band priority configuration, a first communication at a first time period, wherein a second communication is scheduled for at least a portion of the first time period, wherein one of the first communication or the second communication comprises an SL communication in a first link direction, and wherein the other of the first communication or the second communication comprises a Uu communication for a second link direction opposite the first link direction.