Adapting SCell Activation Delay for Concurrent Network Commands

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Solution Overview

Problem

Existing wireless network solutions face challenges in efficiently activating and deactivating multiple secondary cells due to overlapping commands, which can interfere with the timely completion of SCell activation or deactivation procedures, leading to potential network inefficiencies and battery life degradation.

Innovation Solution

A method and system that adapt the delay period for activating or deactivating a first secondary cell based on receiving commands for a second secondary cell, allowing for a longer total delay period when multiple SCell operations overlap, ensuring consistent and defined user equipment behavior even during concurrent SCell setup or release requests.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the network sends activation or deactivation commands for multiple secondary cells concurrently, then network efficiency is improved, but the timing accuracy and reliability of SCell activation/deactivation procedures deteriorate due to overlapping commands interfering with each other

Engineering Contradiction:
Improvenetwork efficiencyVSAvoidSCell activation/deactivation timing reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The network node determines whether a first SCell activation or deactivation procedure is ongoing before sending a second command. By checking the timing status in advance and potentially delaying the second command until the first procedure completes, the system prevents overlapping commands that would interfere with timing accuracy, while still maintaining high network efficiency through coordinated scheduling

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses feedback about the current procedure status (whether an activation or deactivation is ongoing) to dynamically adjust command scheduling. The network node monitors the timing of ongoing procedures and uses this information to determine when to send subsequent commands, ensuring that commands are sent at appropriate times when procedures are not overlapping, thus maintaining both efficiency and reliability

Inventive Principle:
Principle #23Feedback

2Manufacturing precision

If the network waits for previous SCell operations to complete before sending new commands, then timing accuracy is improved, but network productivity deteriorates due to sequential processing

Engineering Contradiction:
ImproveSCell activation timing precisionVSAvoidnetwork throughput
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The command scheduling system dynamically adapts its behavior based on real-time procedure status. Instead of fixed sequential processing or risky concurrent processing, the system flexibly determines whether to send commands immediately or delay them based on whether procedures are ongoing, optimizing the balance between timing precision and network throughput for each specific situation

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The network performs preliminary checks about ongoing procedures before sending commands. By determining in advance whether a procedure is ongoing and adjusting the timing accordingly, the system ensures accurate SCell activation timing while maintaining high network productivity through intelligent scheduling that avoids unnecessary delays

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS10912023B2System and method for activating and deactivating multiple secondary cells
Publication Date: 2021.02.02 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
  • US10912023B2 patent drawing
  • US10912023B2 patent drawing
  • US10912023B2 patent drawing

AI summary

According to certain embodiments, a method for activating and deactivating multiple secondary cells (150A-B) includes receiving a first message requesting activation or deactivation of a first secondary cell (first SCell) (150A) for a first carrier. In response to the first message, a first procedure is initiated to activate or deactivate the first SCell (150A). The wireless device (110A) may have a first delay period (Tactivate_basic) within which to complete the first procedure. While performing the first procedure to activate or deactivate the first SCell (150A), a second message to activate, deactivate, configure or deconfigure a second SCell (150B) for a second carrier is received. In response to receiving the second message to activate, deactivate, configure, or deconfigure the second SCell (150B), the first procedure may be modified by replacing the first delay period with a second delay period (Tactivate_total) within which to complete the first procedure to activate or deactivate the first SCell (150A). The second delay period (Tactivate_total) may be greater than the first delay period (Tactivate basic).