TDRA Table Selection for eRedCap Uplink Message Scheduling

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Solution Overview

Problem

The Rel 18 eRedCap terminal device's reduced processing capability results in an increased time needed to process messages, leading to potential uplink transmission delays due to the use of existing TDRA tables designed for legacy devices, which do not account for the eRedCap's processing limitations.

Innovation Solution

Implementing a method to determine a target time domain resource allocation set based on specific conditions, allowing for different time domain resource allocation sets to be used for various terminal devices, ensuring timely processing and transmission of messages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the existing TDRA table is used for scheduling, then legacy terminal devices can process messages timely, but eRedCap terminal devices with reduced processing capability cannot complete message processing before uplink transmission

Engineering Contradiction:

Improvemessage processing completionVSAvoidscheduling flexibility for different terminal types

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent divides the time domain resource allocation into separate tables: a first TDRA table for legacy terminal devices and a second TDRA table for eRedCap terminal devices. This segmentation allows each table to be optimized for the specific processing capabilities of its target device type, ensuring that eRedCap devices have sufficient processing time while legacy devices maintain their scheduling efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different TDRA table configurations to different terminal device types based on their processing capabilities. The first TDRA table uses shorter time intervals suitable for legacy devices with faster processing, while the second TDRA table uses longer time intervals accommodating eRedCap devices with reduced processing capability, thus providing locally optimized scheduling quality for each device type.

Inventive Principle:

Principle #3Local quality

2Productivity

If the time interval between messages is reduced to improve scheduling efficiency, then network scheduling flexibility is enhanced, but eRedCap terminal devices cannot complete processing in time

Engineering Contradiction:

Improvescheduling efficiencyVSAvoidmessage processing time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent introduces dynamic table selection where the network device determines which TDRA table to use based on the terminal device type. The base station identifies whether the terminal is eRedCap or legacy and accordingly selects the appropriate table, enabling dynamic adaptation of time intervals to match actual processing requirements while maintaining overall scheduling efficiency.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the time interval parameter in the TDRA table configuration based on terminal device capabilities. For eRedCap devices, the time interval parameter is increased to accommodate their processing speed, while legacy devices use shorter intervals. This parameter adjustment resolves the contradiction between scheduling efficiency and processing completion time.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If a single TDRA table is used for all terminal devices, then device complexity is reduced, but scheduling accuracy for different terminal capabilities is compromised

Engineering Contradiction:

Improvescheduling configurationVSAvoidscheduling accuracy

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent creates a universal scheduling mechanism that handles multiple terminal device types through a unified selection process. The network device uses terminal capability identification to automatically select the appropriate TDRA table, making the system universally applicable to both legacy and eRedCap devices without requiring separate manual configurations for each device type.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20260067923A1Message scheduling method and apparatus

Publication Date: 2026.03.05 HUAWEI TECH CO LTD

AI summary

This application provides a message scheduling method and an apparatus. The method includes: determining a target time domain resource allocation set, where the target time domain resource allocation set is a first time domain resource allocation set or a second time domain resource allocation set; receiving a first message, where the first message indicates a first parameter, and the first parameter is a parameter in the target time domain resource allocation set; and sending the second message based on the first parameter. According to the method provided in this application, there are a plurality of time domain resource allocation sets, so that different time domain resource allocation sets are used under different conditions. In this way, each type of terminal device can process a scheduling message and send a scheduled message in a timely manner.