BLE CIS Scheduling with Overlapping Sub-Events for Link Reliability

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Solution Overview

Problem

Existing Bluetooth low energy (BLE) communication systems face challenges in efficiently managing isochronous group events due to varying link quality in wireless environments, leading to reduced communication efficiency and increased power consumption.

Innovation Solution

The system employs a hybrid arrangement of connected isochronous group (CIG) events, allowing sub-events of different CIS events to partially overlap, adapting the scheduling based on link quality and acknowledging signals to optimize data transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sub-events of different CIS events are scheduled sequentially without overlap, then transmission reliability is improved, but communication efficiency and power consumption deteriorate

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidcommunication efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent implements dynamic scheduling of sub-events where the timing and overlap of sub-events from different CIS events are adjusted based on real-time link quality conditions. When link quality is good, sub-events can overlap to improve efficiency; when link quality degrades, the system can revert to sequential scheduling to maintain reliability. This dynamic adaptation resolves the contradiction between reliability and efficiency.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the temporal parameters of sub-event scheduling based on link quality metrics. By modifying the start time, duration, and overlap程度 of sub-events dynamically, the system optimizes the balance between transmission reliability and communication efficiency. This parameter adjustment allows the system to achieve both high reliability and high efficiency under different conditions.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If sub-events of different CIS events are scheduled to overlap, then communication efficiency is improved, but transmission reliability deteriorates due to varying link quality

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidtransmission reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system dynamically adjusts the overlap parameter of sub-events based on link quality conditions. When link quality is favorable, greater overlap is permitted to maximize efficiency. When link quality deteriorates, the overlap is reduced or eliminated to prevent transmission errors. This conditional parameter modification resolves the contradiction between efficiency improvement and reliability maintenance.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The scheduling system transitions from static to dynamic sub-event arrangement, where the degree of overlap between sub-events of different CIS events is continuously adapted to current wireless conditions. This dynamic scheduling enables the system to achieve high efficiency when conditions permit while maintaining reliability when conditions deteriorate.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If transmission scheduling is fixed without adaptation, then device complexity is reduced, but power consumption increases due to inefficient transmissions

Engineering Contradiction:

Improvescheduling complexityVSAvoidpower consumption

Core Design Contradiction:

Device complexityVSUse of energy by moving object

Solution Approach 1:

The patent incorporates feedback mechanisms where the electronic device monitors transmission outcomes and link quality, then uses this information to adjust future sub-event scheduling. This feedback-driven adaptation optimizes power consumption by avoiding redundant transmissions while maintaining manageable complexity through rule-based adjustment rather than complex algorithms.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary scheduling of sub-events based on predicted or historical link quality patterns, preparing transmission schedules in advance. This preliminary action reduces the need for complex real-time decision-making while improving transmission efficiency by pre-optimizing schedules based on available information, thereby reducing power consumption without excessive complexity.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12408126B2Electronic device, method, and non-transitory computer readable storage medium for managing transmissions to external electronic devices in wireless environment

Publication Date: 2025.09.02 SAMSUNG ELECTRONICS CO LTD

AI summary

An electronic device is provided. The electronic device includes a communication circuitry for Bluetooth low energy (BLE), and a processor. The processor is configured to obtain a connected isochronous group (CIG) event including a first connected isochronous stream (CIS) event that includes first sub-events and a second CIS event that includes second sub-events that at least partially overlap at least part of the first sub-events, and transmit, based on receiving an acknowledgement (ACK) signal for first data transmitted to a first external electronic device via a first sub-event among the first sub-events, second data to a second external electronic device via a third sub-event among the second sub-events, wherein the third sub-event overlaps a second sub-event immediately after the first sub-event among the first sub-events.