Logical Channel Mapping for URLLC Reliability

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Solution Overview

Problem

Current wireless communication technologies, particularly in New Radio (NR), lack effective methods to map logical channels to physical layer service identifiers and manage multi-slot scheduling, which fails to distinguish between services with different reliability requirements such as eMBB and URLLC, leading to inefficient resource allocation.

Innovation Solution

Configuring mapping relationships between logical channels or channel groups and physical layer service identifiers, and aggregation factor parameters, allowing for differentiated resource allocation based on service requirements, ensuring that logical channels and channel groups are used appropriately for specific services and that aggregation factors are tailored to meet reliability needs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multi-slot scheduling is used to transmit Transport Blocks multiple times, then transmission reliability is improved, but the ability to distinguish between different services (eMBB and URLLC) is lost, causing inefficient resource allocation

Engineering Contradiction:
Improvetransmission reliabilityVSAvoidservice differentiation capability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent segments the scheduling mechanism by introducing separate scheduling configurations for different service types. It divides the resource allocation process into distinct segments: one for eMBB services and another for URLLC services, each with its own aggregation factor and scheduling parameters. This segmentation allows the system to maintain multi-slot scheduling reliability while simultaneously differentiating between service requirements.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by assigning different aggregation factor parameters to different logical channels based on their service requirements. URLLC logical channels receive larger aggregation factors for enhanced reliability, while eMBB logical channels receive smaller aggregation factors for efficiency. This localized differentiation ensures that each service type receives tailored scheduling parameters matching its specific quality requirements.

Inventive Principle:
Principle #3Local quality

2Device complexity

If the same aggregation factor is used for all services in multi-slot scheduling, then scheduling complexity is reduced, but resource allocation efficiency deteriorates due to inability to meet different reliability requirements

Engineering Contradiction:
Improvescheduling complexityVSAvoidresource allocation efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent introduces dynamics into the scheduling system by making aggregation factors adjustable and service-specific rather than fixed and uniform. The system dynamically selects appropriate aggregation factors based on the logical channel type and service requirements. This dynamic adaptation enables efficient resource allocation while managing complexity through automated selection mechanisms.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of aggregation factor from a single fixed value to multiple service-specific values. By introducing parameter variation based on service type, the system achieves efficient resource allocation for different reliability requirements. The patent establishes mapping relationships between logical channels and specific aggregation factor parameters, enabling optimized scheduling without excessive complexity.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If logical channels are mapped to physical layer service identifiers, then service-specific resource allocation is enabled, but system complexity increases due to mapping relationship configuration requirements

Engineering Contradiction:
Improveresource allocation efficiencyVSAvoidmapping configuration complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent applies universality by creating a standardized mapping mechanism that can handle multiple service types through a unified framework. The mapping relationship between logical channels and physical layer service identifiers is established through a generalizable configuration system that works for both eMBB and URLLC services. This universal approach enables service-specific resource allocation while avoiding the need for completely separate configuration systems.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS12089221B2Data scheduling and transmitting method, network device, terminal, and computer storage medium
Publication Date: 2024.09.10 CHINA MOBILE COMM GRP CO LTD
  • US12089221B2 patent drawing
  • US12089221B2 patent drawing
  • US12089221B2 patent drawing

AI summary

Disclosed are a data scheduling and transmitting method, a network device, a terminal, and a computer storage medium. The method comprises: a network device configures a first mapping relationship between a logic channel and a physical layer service identifier, or configures a second mapping relationship between a logic channel group and the physical layer service identifier.