Network-Based IP Flow Mobility for Dual-Access Traffic Control
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Solution Overview
Problem
In mobile communication systems, there is a need for an efficient method to control network connections and traffic communication between 3GPP and non-3GPP systems, particularly when a user terminal connects to both systems simultaneously, requiring consideration of subscriber information and network conditions to optimize data transmission paths.
Innovation Solution
A signal communication method that involves establishing connections to both a base station and a Wireless Local Area Network (WLAN), detecting unusable WLAN connections, and transmitting control messages to request path changes through the base station, while also supporting network-based IP flow mobility to manage traffic paths effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a user terminal connects to both 3GPP and non-3GPP systems simultaneously, then data communication speed and reliability are improved, but network control complexity and path management difficulty increase
Solution Approach 1:
The patent introduces a network-based IP flow mobility (NB IFOM) mechanism as an intermediary layer between the terminal and access networks. This mechanism includes a network controller that manages traffic path selection and a terminal that executes path switching based on network instructions, thereby simplifying the complexity of dual-network coordination while maintaining high-speed communication capabilities.
Solution Approach 2:
The patent segments the data transmission path into multiple independent routes (3GPP network path and non-3GPP network path) with separate flow identifiers. Each path can be independently controlled and managed, allowing the network to selectively route different data flows through appropriate access networks without interfering with each other, thus reducing overall control complexity.
2Productivity
If the network dynamically switches traffic paths between 3GPP and non-3GPP systems, then resource utilization efficiency is improved, but connection stability and service continuity may deteriorate
Solution Approach 1:
The patent establishes preliminary traffic path configurations and flow routing rules before actual data transmission begins. The network controller pre-configures multiple available paths and their corresponding flow identifiers, so that when path switching is needed, the terminal can immediately switch to a pre-established path without interruption, ensuring connection stability during dynamic resource allocation.
Solution Approach 2:
The patent implements a feedback mechanism where the network controller continuously monitors the status of both 3GPP and non-3GPP connections and dynamically adjusts traffic path allocation based on real-time network conditions. This feedback loop ensures that path switching only occurs when necessary and appropriate, maintaining connection stability while optimizing resource utilization.
3Measurement precision
If network-based IP flow mobility is implemented to manage traffic paths, then traffic control precision is improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The patent implements a self-service mechanism where the terminal automatically executes path switching based on flow identifiers received from the network controller. The terminal's IP flow mobility function autonomously manages traffic routing without requiring complex manual configuration or intervention, simplifying implementation while maintaining precise traffic control through automated flow-based path selection.
Data Source
AI summary
A communication method for incorporating an IoT technique with a 5G communication system for supporting a higher data transmission rate in comparison with a 4G system and subsequent systems and a system therefor are disclosed. The present invention can be applied to intelligent services (for example, services related to smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, security, and safety) on the basis of a 5G communication technique and IoT-related techniques. A method for transmitting and receiving a signal in a terminal of a mobile communication system, according to one embodiment of the present specification, comprises the steps of establishing an access for a specific PDN connection with a base station and a wireless local area network (WLAN); detecting that the access through the WLAN is unusable; and transmitting, to a mobility management entity (MME), a control message for moving traffic through the WLAN, through the base station. According to one embodiment of the present specification, a traffic transmission path of the terminal capable of accessing both a 3GPP network and a non-3GPP network can be controlled in the network and the traffic transmission path can be determined according the states of the network and the terminal, thereby effectively utilizing limited communication resources.