Beam-Dependent Scheduling Offsets for Adaptive Beamforming

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing beam-dependent scheduling offsets due to the use of fixed/finite beam weights in codebook-based approaches, which become inefficient with adaptive/dynamic beamforming techniques, leading to difficulties in maintaining consistent scheduling offsets.

Innovation Solution

Implementing beam-dependent scheduling offset determination and configuration by allowing UEs to perform adaptive beamforming, providing input to the network entity for determining minimum scheduling offsets based on their processing state, enabling dynamic beam usage outside the constraints of fixed beam weights.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If codebook-based beamforming with fixed beam weights is used, then device complexity is reduced, but adaptability to dynamic channel conditions deteriorates

Engineering Contradiction:

Improveadaptability to dynamic channel conditionsVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamics by transitioning from static codebook-based beam weights to adaptive beamforming where beam weights are dynamically adjusted based on real-time channel conditions. The UE performs adaptive beamforming using multiple antenna elements and adjusts beam directions and weights according to measured channel characteristics, enabling the system to adapt to changing wireless environments while maintaining manageable complexity through algorithmic optimization.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If adaptive beamforming is implemented, then adaptability to dynamic channel conditions is improved, but scheduling offset consistency deteriorates

Engineering Contradiction:

Improveadaptability to dynamic channel conditionsVSAvoidscheduling offset consistency

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent applies preliminary action by having the UE report its beamforming processing state to the network entity before actual data transmission occurs. The network entity uses this advance information to pre-determine appropriate scheduling offsets, ensuring that the UE has sufficient time to complete adaptive beamforming operations before the scheduled transmission, thereby maintaining scheduling consistency despite dynamic beamforming requirements.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where the UE continuously reports its beamforming processing state to the network entity. Based on this feedback, the network dynamically adjusts scheduling offsets to match the UE's actual beamforming completion time, creating a closed-loop system that maintains scheduling consistency while enabling adaptive beamforming.

Inventive Principle:

Principle #23Feedback

3Reliability

If fixed scheduling offsets are used, then scheduling simplicity is maintained, but communication reliability in adaptive beamforming scenarios deteriorates

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidscheduling complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting scheduling offset values based on the UE's beamforming processing state. Instead of using a fixed scheduling offset, the system modifies the offset parameter according to real-time conditions, ensuring reliable communication while managing scheduling complexity through state-based parameter adaptation rather than complex scheduling algorithms.

Inventive Principle:

Principle #35Parameter changes

4Productivity

If beam-dependent scheduling offsets are implemented, then communication efficiency is improved, but scheduling complexity increases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidscheduling complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements self-service by having the UE autonomously determine and report its beamforming processing state, which then automatically triggers the network to select appropriate scheduling offsets. This self-service mechanism improves communication efficiency by eliminating the need for complex network-side calculations while managing scheduling complexity through UE-initiated state reporting and automated network response.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20250240788A1Methods for beam-dependent scheduling offset determination

Publication Date: 2025.07.24 QUALCOMM INC

AI summary

This disclosure provides systems, methods, and devices for wireless communication that support beam-dependent scheduling offset determination and configuration. In a first aspect, a method of beam-dependent scheduling offset determination and configuration includes a user equipment (UE) receiving an allocation table including default uplink/downlink scheduling offsets. Upon receiving a scheduling message from a network entity, the UE transmits a beam-dependent scheduling offset message based on a processing state of the UE in an adaptive beamforming procedure. The network entity may use this message to calculate new scheduling offsets for the UE. The UE may then generate a beam using the determined adaptive beam weights and performs communications with the network entity. Other aspects and features are also claimed and described.