QoS Control for Simultaneous 3GPP and Non-3GPP Access
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Solution Overview
Problem
Current mobile communication systems face challenges in simultaneously managing connections and quality of service (QoS) when User Equipment accesses both 3GPP and non-3GPP systems, such as GERAN, UTRAN, and WLAN, due to resource shortages and increasing demand for higher speed data services.
Innovation Solution
The solution involves generating access connections and providing QoS settings by transferring parameters between User Equipment and networks using extended EAP messages and layer-3 protocol messages, enabling seamless data transmission and QoS control across 3GPP and non-3GPP systems, including the use of trusted WLAN access networks (TWAN) and trusted WLAN access gateways (TWAG) to manage PDN connections and offload traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a User Equipment simultaneously accesses both 3GPP and non-3GPP systems, then data transmission speed and service capability are improved, but resource management complexity and QoS control difficulty increase
Solution Approach 1:
The patent segments the network connection management by introducing separate PDN connections for 3GPP and non-3GPP systems. Each connection is managed independently with its own QoS parameters and bearer structures, allowing the UE to simultaneously maintain multiple network accesses without overwhelming complexity in resource management.
Solution Approach 2:
The patent introduces an intermediary mechanism through extended EAP messages and layer-3 protocol messages that facilitate parameter exchange between the UE and networks. This intermediary signaling framework enables coordinated QoS control across heterogeneous networks without requiring direct complex interactions between all network elements.
2Measurement precision
If QoS parameters are exchanged between UE and networks using extended signaling, then QoS control precision is improved, but signaling overhead and protocol complexity increase
Solution Approach 1:
The patent extends existing EAP and layer-3 protocols to serve multiple functions: authentication, connection establishment, and QoS parameter exchange. By making these protocols multi-functional, the patent avoids creating entirely new signaling mechanisms, thereby improving QoS control precision while limiting the increase in protocol complexity.
Solution Approach 2:
The patent introduces specific QoS-related parameters into existing message structures (such as QCI, ARP, GBR in EAP messages). This parameter-based approach allows precise QoS control by modifying existing protocols rather than creating new complex signaling frameworks, achieving precision without excessive complexity.
3Adaptability or versatility
If multiple PDN connections are established for simultaneous network access, then service versatility is improved, but connection management overhead increases
Solution Approach 1:
The patent performs QoS parameter negotiation and connection configuration in advance during the attachment and PDN establishment phases. By preliminarily setting up QoS parameters and bearer configurations before actual data transmission, the patent reduces real-time connection management overhead while maintaining service versatility across multiple PDN connections.
Data Source
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AI summary
A method for transmitting/receiving, by a User Equipment, a signal in a mobile communication system includes: transmitting an authentication request message to a wireless LAN; receiving an authentication response message corresponding to the authentication request message from the wireless LAN; and transmitting, to a base station, a message for supporting a multi-connection mode based on the authentication response message. It is possible to generate an access connection or to provide a QoS setting when simultaneously accessing a 3GPP system and a non-3GPP system and transmitting/receiving data, so that a more improved method and device for transmitting and receiving data can be provided to a user.