Cellular Session Establishment in Heterogeneous Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in seamlessly establishing cellular sessions when a Wi-Fi session already exists, particularly in heterogeneous networks, which affects simultaneous data transmission and network efficiency.
Innovation Solution
A method for establishing a local mobility anchor (LMA)-based cellular session by determining the quality of service (QoS) and routing type for data flows in a converged communication system, using measurement results from a multi-RAT device to trigger the setup of a primary RAT system session, and performing data transmission based on the determined routing type and rule.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a Wi-Fi session already exists in a heterogeneous network, then data transmission can be established through the secondary RAT system, but establishing an additional cellular session for simultaneous transmission becomes complex and requires careful routing decisions
Solution Approach 1:
The patent segments data flows into different routing types (first routing type and second routing type) based on QoS requirements. Different data flows are handled differently: some go through Wi-Fi while others use cellular, allowing simultaneous transmission without creating a single complex unified session. This segmentation enables the system to manage multiple sessions independently.
Solution Approach 2:
The system dynamically determines routing types based on real-time QoS measurements and network conditions. The routing decision is not fixed but adapts based on measured parameters such as packet loss, jitter, and bandwidth, allowing the system to optimize simultaneous transmission by adjusting routing paths dynamically.
2Ease of operation
If all data flows are controlled by a single local mobility anchor, then session management is simplified, but the system cannot optimize for different QoS requirements of different data flows
Solution Approach 1:
The patent divides data flows into distinct routing types based on QoS requirements. Instead of treating all data uniformly, the system segments flows that require different quality levels and routes them through different access technologies (Wi-Fi or cellular), enabling precise QoS optimization while maintaining manageable session structure.
Solution Approach 2:
Different routing decisions are made for different data flows based on their specific QoS requirements. The system applies local quality control by measuring QoS parameters for each flow and making routing decisions that optimize performance for each individual flow type, rather than applying a uniform policy to all data.
3Productivity
If measurement results from multi-RAT devices are used to determine routing types, then data transmission optimization is improved, but the system requires additional measurement configurations and message exchanges
Solution Approach 1:
The system performs preliminary QoS measurements of the secondary RAT system before finalizing routing decisions. By measuring packet loss, jitter, and bandwidth in advance, the system can pre-determine appropriate routing types and configure sessions accordingly, improving data transmission efficiency while managing measurement complexity through structured measurement procedures.
Solution Approach 2:
The patent implements a feedback mechanism where measurement results from multi-RAT devices are used to determine routing types. The system measures QoS parameters, uses these results to make routing decisions, and can adjust future measurements based on transmission performance, creating a closed-loop optimization system that improves efficiency while managing complexity through iterative refinement.
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AI summary
A method and apparatus for establishing a session of a cellular system in a wireless communication system is provided. According to embodiments of the present invention, the establishment of the session of the cellular system may be triggered by a network when a session of a Wi-Fi system already exists. By using the session of the cellular system and the session of the Wi-Fi system, simultaneous transmission through the cellular system and the Wi-Fi system can be achieved.