Multi-SIM Path Control for Stable Streaming Under Network Congestion

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Solution Overview

Problem

Mobile networks face challenges in maintaining high communication performance for streaming services due to fluctuating radio environments, congestion, and rapid changes in communication traffic, leading to unstable video streaming experiences.

Innovation Solution

A terminal device capable of simultaneous communication using multiple communication paths associated with different SIMs, utilizing information on radio quality, network congestion, and service quality to predict and control communication paths for stable streaming.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional radio communication technology is used, then device complexity is reduced, but communication performance (stability, reliability, throughput) deteriorates due to radio environment changes and congestion

Engineering Contradiction:

Improvecommunication performanceVSAvoidterminal device complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The communication system segments the communication path into multiple independent paths (first communication path and second communication path) associated with different base stations. Each path can be independently selected and controlled based on real-time radio quality measurements, allowing the terminal device to switch between paths to maintain communication reliability without requiring a completely complex redesign of the communication architecture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The terminal device dynamically selects and switches between different communication paths based on real-time radio quality information. The communication control unit continuously monitors radio quality metrics (such as signal strength, interference levels) and adjusts the active communication path accordingly. This dynamic adaptation allows the system to maintain high communication performance while using a relatively simple terminal device structure that follows standard communication protocols.

Inventive Principle:

Principle #15Dynamics

2Productivity

If multiple communication paths are used simultaneously, then communication performance (throughput, stability) is improved, but device complexity increases due to need for path selection and control

Engineering Contradiction:

Improvecommunication throughputVSAvoidcommunication control complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The communication control unit receives real-time radio quality information as feedback from the terminal device and uses this information to make informed decisions about path selection. The feedback mechanism includes monitoring communication quality metrics (throughput, delay, packet loss) and adjusting the active path accordingly. This feedback-driven approach enables the system to achieve high productivity through multiple paths while keeping control complexity manageable through automated, data-driven decision-making.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system changes operational parameters (communication path selection, path switching timing) based on measured radio quality conditions. When radio quality degrades on one path, the system transitions to an alternative path by changing the selection parameter. This parameter-based control allows the terminal device to leverage multiple communication paths for improved throughput while maintaining simple control logic that operates on clear quality thresholds and state transitions.

Inventive Principle:

Principle #35Parameter changes

3Stability of the object's composition

If path selection based on radio quality information is implemented, then communication stability is improved, but measurement and control difficulty increases

Engineering Contradiction:

Improvecommunication stabilityVSAvoidradio quality measurement difficulty

Core Design Contradiction:

Stability of the object's compositionVSDifficulty of detecting and measuring

Solution Approach 1:

The terminal device performs self-measurement of radio quality parameters using its own built-in measurement capabilities. The terminal device autonomously collects radio quality information (signal strength, interference, quality indicators) without requiring external measurement systems or complex control infrastructure. This self-service approach enables the system to achieve communication stability through informed path selection while avoiding the increased difficulty of implementing external measurement and control systems.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20250392975A1Terminal device, information processing device, and communication method

Publication Date: 2025.12.25 SONY GROUP CORP

AI summary

A terminal device is a terminal device capable of performing simultaneous communication simultaneously using a plurality of communication paths associated with different SIMs, respectively, the terminal device including a communication control unit that performs communication using a mode when the terminal device performs the simultaneous communication or one communication path out of the plurality of communication paths determined on the basis of information regarding the communication, in which the information regarding the communication includes information on radio quality between the terminal device and a base station for each of the communication paths, information on a congestion degree of a network for each of the communication paths, and information on service quality for each of the communication paths.