PDSCH Service Conflict Resolution via Priority Scheduling

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

In the new radio (NR) system, when a network device schedules two physical downlink share channels (PDSCHs) for a terminal, the time domain resources of these PDSCHs may overlap, causing a service conflict that affects the terminal's ability to receive the PDSCH correctly.

Innovation Solution

The proposed solution involves a method where the terminal receives at least one of the overlapping PDSCHs, with each PDSCH carrying a different type of service. This is achieved by prioritizing the reception based on the type and priority of the services, ensuring that the terminal can correctly receive one of the PDSCHs even when their time domain resources overlap.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the network device schedules two PDSCHs for the terminal, then the service coverage is improved, but the time domain resources overlap causing service conflict

Engineering Contradiction:
Improveservice coverageVSAvoidPDSCH reception correctness
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies parameter changes by modifying the time domain resource allocation parameters of PDSCH transmissions. When a service conflict is detected (overlapping time domain resources), the network device adjusts scheduling parameters such as time offsets, resource allocation ranges, or transmission timing to separate the conflicting PDSCHs in the time domain, thereby resolving the conflict while maintaining service coverage

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamics by making the PDSCH scheduling flexible and adaptive. The network device dynamically adjusts the scheduling decisions based on real-time service requirements and conflict detection. When conflicts are detected, the system dynamically reconfigures the time domain resources, allowing the scheduling strategy to adapt to changing conditions and resolve conflicts effectively

Inventive Principle:
Principle #15Dynamics

2Quantity of substance

If the terminal receives both overlapping PDSCHs, then the service completeness is improved, but the reception correctness deteriorates due to resource conflict

Engineering Contradiction:
Improveservice completenessVSAvoidreception correctness
Core Design Contradiction:
Quantity of substanceVSManufacturing precision

Solution Approach 1:

The patent applies segmentation by dividing the reception process into distinct phases or groups. When service conflicts occur, the terminal segments the PDSCH receptions by prioritizing certain PDSCHs over others based on service types, QoS parameters, or scheduling priorities. This segmentation allows the terminal to systematically handle multiple PDSCHs while ensuring critical services are received correctly

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent uses parameter changes by adjusting reception parameters such as priority levels, reception thresholds, or processing sequences based on service characteristics. When conflicts are detected, the terminal modifies reception parameters to favor high-priority services, thereby maintaining reception correctness for critical PDSCHs while still attempting to receive other services

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12284668B2Service conflict solution method, apparatus and device, and storage medium
Publication Date: 2025.04.22 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
  • US12284668B2 patent drawing
  • US12284668B2 patent drawing
  • US12284668B2 patent drawing

AI summary

A method for resolving service conflict includes: receiving, when time domain resources of a first physical downlink shared channel (PDSCH) and a second PDSCH overlap, at least one of the first PDSCH and the second PDSCH; wherein, the first PDSCH carries a first type of service, and the second PDSCH carries a second type of service.