Terminal–Base Station Uplink Prioritization for Scheduling Alignment

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Solution Overview

Problem

There is a misalignment in recognition or assumption between base stations and terminals regarding the generation of deprioritized data, leading to inefficiencies in data prioritization and scheduling in radio communication systems.

Innovation Solution

A terminal generates and transmits second uplink data through a channel based on received rescheduling information, even if deprioritized, to align with base station assumptions, thereby implementing appropriate data prioritization and scheduling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal does not generate deprioritized data when receiving rescheduling information, then the terminal follows its original assumption, but misalignment occurs with base station assumptions leading to scheduling inefficiencies

Engineering Contradiction:
Improvescheduling alignmentVSAvoiddata transmission efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent inverts the conventional assumption by having the terminal generate deprioritized data upon receiving rescheduling information, opposite to the original assumption that no such data should be generated. This inversion resolves the misalignment between terminal and base station assumptions, ensuring both operate with consistent understanding of data generation rules.

Inventive Principle:
Principle #13The other way round (Inversion)

2Reliability

If the terminal generates deprioritized data upon receiving rescheduling information, then scheduling alignment with base station is improved, but additional data generation overhead occurs

Engineering Contradiction:
Improvescheduling alignmentVSAvoiddata processing overhead
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The terminal autonomously determines and generates deprioritized data based on received rescheduling information without requiring additional base station instructions or complex coordination protocols. This self-service approach resolves scheduling misalignment while minimizing overhead, as the terminal independently manages its data generation decisions according to the rescheduling information it receives.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12452871B2Prioritization configuration in terminal and base station
Publication Date: 2025.10.21 NTT DOCOMO INC
  • US12452871B2 patent drawing
  • US12452871B2 patent drawing

AI summary

A terminal is disclosed including a reception section that receives a higher layer parameter on a configuration of media access control (MAC); and a control section that ignores an uplink (UL) grant for which a configuration on prioritization is performed by the higher layer parameter, when the UL grant is not a prioritized UL grant in a case of retransmission in MAC. In other aspects, a radio communication method and a radio communication system are also disclosed.