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
Engineering 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
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.
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.
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
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.
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.
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
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.
Data Source
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.


