Two-Stage Downlink Control Scheduling With Default Beam Handling

Solution Overview

Problem

Wireless communication systems lack support for processing and scheduling two-stage downlink control information (DCI), leading to increased complexity and resource consumption at user equipment (UEs) due to the inability to determine default beams and minimum scheduling offsets for receiving second DCI.

Innovation Solution

UEs and base stations are enabled to process two-stage DCI by receiving first DCI in a control channel and second DCI using a default beam or according to a minimum scheduling offset, allowing for reduced complexity and efficient resource management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If two-stage downlink control information is processed without default beam and minimum scheduling offset mechanisms, then scheduling flexibility is improved, but UE complexity and resource consumption increase

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidUE complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-configuring default beam information and minimum scheduling offset values in the UE before actual DCI processing. The UE stores these pre-established parameters (default beam from initial downlink assignment, minimum scheduling offset from RRC configuration) so that when two-stage DCI is received, the UE can immediately use these pre-prepared values without performing complex real-time calculations, thus reducing processing complexity while maintaining scheduling flexibility.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If two-stage downlink control information is processed without default beam and minimum scheduling offset mechanisms, then scheduling flexibility is improved, but computing resource consumption increases

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidcomputing resource consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent applies preliminary action by pre-configuring default beam information and minimum scheduling offset values in the UE before actual DCI processing. The UE stores these pre-established parameters (default beam from initial downlink assignment, minimum scheduling offset from RRC configuration) so that when two-stage DCI is received, the UE can immediately use these pre-prepared values without performing complex real-time calculations, thus reducing processing complexity while maintaining scheduling flexibility.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If two-stage downlink control information is processed without default beam and minimum scheduling offset mechanisms, then scheduling flexibility is improved, but memory resource consumption increases

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidmemory resource consumption

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent applies preliminary action by pre-configuring default beam information and minimum scheduling offset values in the UE before actual DCI processing. The UE stores these pre-established parameters (default beam from initial downlink assignment, minimum scheduling offset from RRC configuration) so that when two-stage DCI is received, the UE can immediately use these pre-prepared values without performing complex real-time calculations, thus reducing processing complexity while maintaining scheduling flexibility.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12543186B2Processing of two-stage downlink control information

Publication Date: 2026.02.03 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive first downlink control information (DCI) and second DCI that together schedule a communication of the UE, where the second DCI is received using a default beam or according to a minimum scheduling offset. The UE may transmit or receive the communication based at least in part on the first DCI and the second DCI. Numerous other aspects are provided.