5G Terminal Conflict Resolution for Beam Failure and SCell Deactivation

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Solution Overview

Problem

In 5G mobile communication systems, terminals face conflicts when receiving simultaneous requests for communication service procedures such as beam failure recovery and secondary cell deactivation or uplink carrier switching, making it difficult to determine the priority and completion order of these procedures.

Innovation Solution

A method and terminal implementation that processes first and second communication services according to predetermined manners when a second communication service initiation request is received during an ongoing first service, specifically handling scenarios involving beam failure recovery, random access, SCell deactivation, and SUL switching by canceling, performing, or completing procedures based on predefined processing methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the terminal performs both beam failure recovery request procedure and random access procedure simultaneously, then the terminal can handle multiple communication services, but the terminal cannot determine which procedure to prioritize leading to procedure conflict

Engineering Contradiction:

Improveability to handle multiple communication servicesVSAvoidprocedure priority determination

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent applies preliminary action by pre-defining priority relationships between different communication service procedures before conflicts occur. The terminal is configured with predetermined priority rules that specify which procedures should be executed first when conflicts arise, such as prioritizing beam failure recovery over random access in certain scenarios. This eliminates the need for real-time decision-making during procedure conflicts.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent inverts the traditional approach by having the network device explicitly indicate procedure priorities through signaling rather than requiring the terminal to autonomously determine priorities. The network device sends indication information that specifies the execution order or priority of concurrent procedures, allowing the terminal to simply follow the network's instructions rather than making complex local decisions.

Inventive Principle:

Principle #13The other way round (Inversion)

2Productivity

If the terminal activates and deactivates SCell frequently to manage uplink carriers, then the terminal can optimize resource usage, but the terminal cannot determine whether to complete SCell deactivation or perform random access first

Engineering Contradiction:

Improveresource usage optimizationVSAvoidprocedure completion reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies preliminary action by pre-establishing priority rules that determine whether SCell deactivation or random access should be completed first. These predetermined rules allow the terminal to reliably execute procedures in the correct order without ambiguity, ensuring both resource optimization and procedure completion reliability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary mechanism where the network device provides priority indication information that mediates between conflicting procedures. This indication acts as a mediator that resolves the conflict between SCell deactivation and random access by specifying which procedure has higher priority, ensuring reliable execution without terminal-side complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If the terminal switches uplink carriers between SUL and non-SUL, then the terminal can adapt to different network conditions, but the terminal cannot determine whether to complete SUL switching or perform beam failure recovery first

Engineering Contradiction:

Improveuplink carrier adaptabilityVSAvoidprocedure execution reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies preliminary action by pre-configuring priority relationships between SUL switching and beam failure recovery procedures. The terminal has predetermined knowledge of which procedure should take precedence under different conditions, ensuring reliable execution without real-time decision-making delays or conflicts.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses network device signaling as an intermediary that provides explicit priority indications for concurrent procedures. The network device sends indication information that mediates the conflict between SUL switching and beam failure recovery, allowing the terminal to reliably follow instructions rather than making autonomous priority decisions.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11476915B2Method and terminal for processing conflict in communication service procedures

Publication Date: 2022.10.18 VIVO MOBILE COMM CO LTD

AI summary

The present disclosure discloses a method and a terminal for processing a conflict of communication service procedures. The method includes: processing a first communication service and a second communication service according to a predetermined processing manner if a second communication service initiation request sent by a network device is received while the first communication service is ongoing; wherein, the first communication service includes: a beam failure recovery request or a random access; and the second communication service includes: a secondary cell (SCell) deactivation or a supplementary uplink carrier (SUL) switching.