Downlink Broadcast Scheduling for Idle NR Terminal Data Reception

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Solution Overview

Problem

In NR (New Radio) communication, terminals in idle or inactive states must transition to the connected state for any data transmission, regardless of packet size or frequency, leading to inefficiencies.

Innovation Solution

Broadcasting a downlink control indication with a first indicator to terminals in idle or inactive states, indicating the presence of downlink data scheduling information, allowing them to receive data without entering the connected state.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If terminals in idle or inactive states transition to connected state for data transmission, then data transmission can be performed, but state transition overhead and signaling complexity increase

Engineering Contradiction:

Improvedata transmission capabilityVSAvoidstate transition overhead

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The base station performs preliminary actions by broadcasting downlink data and scheduling information while the terminal is still in idle or inactive state. The terminal receives a downlink control indication containing scheduling information and data, allowing it to receive data without transitioning to connected state, thus avoiding state transition overhead while maintaining data transmission capability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

A downlink control indication serves as an intermediary mechanism between the base station and terminal in idle/inactive states. This indication carries scheduling information and data, enabling data transmission without requiring full connected state establishment, thereby reducing signaling complexity and state transition overhead

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If terminals frequently transition between idle and connected states, then data transmission flexibility is maintained, but energy consumption increases

Engineering Contradiction:

Improvedata transmission flexibilityVSAvoidterminal energy consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The base station broadcasts downlink data and scheduling information in advance while the terminal remains in idle or inactive state. This preliminary action allows the terminal to receive data without transitioning to connected state, reducing energy consumption while maintaining data transmission flexibility through the broadcast mechanism

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The base station periodically broadcasts downlink control indications containing scheduling information and data to terminals in idle or inactive states. This periodic broadcast mechanism maintains data transmission flexibility without requiring continuous connected state, thereby reducing terminal energy consumption compared to frequent state transitions

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS12557100B2Data transmission method and apparatus, and storage medium

Publication Date: 2026.02.17 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

The data transmission method can include broadcasting a downlink control indication to one or more terminals in a target state, where the downlink control indication includes a first indicator, information in the first indicator indicating presence of downlink data scheduling information for a terminal, and the target state includes an idle state or an inactive state, and broadcasting downlink data associated with the downlink data scheduling information.