Downlink Control Information for Beam Procedure Selection

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Solution Overview

Problem

Existing wireless communication systems face inefficiencies in performing beam procedures such as uplink beam management and downlink beam failure recovery, necessitating improvements for more timely and efficient operations.

Innovation Solution

A base station transmits downlink control information (DCI) to a wireless device indicating the type of beam procedure, allowing the device to perform the appropriate procedure without blind decoding attempts, thereby enhancing the efficiency of beam management and failure recovery processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the wireless device performs blind decoding attempts for physical downlink control channel monitoring to determine beam procedure type, then the device can identify the correct procedure, but the complexity and time consumption increase significantly

Engineering Contradiction:

Improvebeam procedure identification accuracyVSAvoiddecoding attempt complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The base station performs preliminary action by embedding the beam procedure type indication in the DCI format before transmission. This allows the wireless device to directly read the indication without performing multiple blind decoding attempts, thereby reducing complexity while maintaining reliable identification.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the wireless device performs multiple blind decoding attempts to determine beam procedure type, then the device can ensure correct procedure selection, but the time required for beam procedures increases

Engineering Contradiction:

Improvebeam procedure selection accuracyVSAvoidbeam procedure execution time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The base station prepares the beam procedure type indication in advance within the DCI structure, so that when the DCI is transmitted, the indication is immediately available to the wireless device. This eliminates time-consuming blind decoding attempts and enables immediate execution of the correct beam procedure.

Inventive Principle:

Principle #10Preliminary action

3Measurement precision

If the base station transmits detailed beam procedure type information in DCI, then the wireless device can accurately determine the procedure type, but the DCI message size and processing complexity increase

Engineering Contradiction:

Improvebeam procedure type indication accuracyVSAvoidDCI processing complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

Instead of transmitting comprehensive beam procedure information throughout the entire DCI structure, the invention applies local quality by inserting a specific beam procedure type indication field only where needed in the DCI format. This provides accurate procedure type identification while keeping the overall DCI structure compact and processing complexity manageable.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12587434B2Downlink control information for multiple beam procedure types

Publication Date: 2026.03.24 COMCAST CABLE COMM LLC

AI summary

Systems, apparatuses, and methods are described for wireless communications. A base station may transmit downlink control information that may comprise an indication of a beam procedure type of a plurality of beam procedure types. A wireless device may receive the downlink control information and determine a type of procedure to perform based on the indication.