Wireless Data Routing via Load-Aware Core Network Distribution
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Solution Overview
Problem
The existing methods for interworking between cellular and WLAN systems in fifth-generation mobile communication technologies face challenges in efficiently routing data, leading to overloads at the local mobility anchor, which affects the performance and capacity of the cellular system.
Innovation Solution
A method for routing data in a wireless communication system that utilizes a secondary RAT system to distribute the load by receiving uplink data and routing parameters, such as 3GPP core network load information and routing rules, to determine whether data should be transmitted through the 3GPP system or a non-3GPP system, thereby optimizing traffic flow and reducing core network loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If all data flows through the local mobility anchor (LMA) in the core network, then centralized control and routing is simplified, but the LMA becomes overloaded and core network performance deteriorates
Solution Approach 1:
The patent segments the routing function by introducing distributed routing entities (MAGs in access networks) that handle local routing decisions, separating the LMA's control plane functions from user plane data forwarding. This allows the LMA to focus on mobility management while access network entities handle data routing, reducing LMA overload and improving core network throughput.
Solution Approach 2:
The patent introduces a new routing dimension by enabling direct routing paths between access networks and destination networks, bypassing the traditional LMA-centric path. This creates parallel routing dimensions (direct access network routing vs. LMA routing) that distribute traffic load and improve overall network capacity.
2Adaptability or versatility
If heterogeneous wireless systems (cellular and WLAN) interwork seamlessly, then service coverage and capacity increase, but routing complexity and load management difficulty increase
Solution Approach 1:
The patent implements a universal routing framework where the same routing principles and protocols apply across different wireless access networks (cellular, WLAN, etc.). The routing entities in access networks perform similar functions regardless of access type, simplifying interworking management while maintaining versatility across heterogeneous systems.
Solution Approach 2:
The patent introduces routing entities (MAGs) as intermediaries between access networks and the core network's LMA. These intermediaries abstract the complexity of heterogeneous access networks, providing a standardized interface for routing decisions and simplifying the management of multi-access interworking while maintaining adaptability.
3Reliability
If the local mobility anchor handles all routing decisions, then centralized control is maintained, but response time and routing efficiency decrease
Solution Approach 1:
The patent enables preliminary routing decisions to be made at the access network level (MAG) based on local conditions, before data needs to traverse the core network to the LMA. This preliminary action at the edge reduces routing decision time while the LMA maintains centralized control for mobility management, achieving both speed and reliability.
Data Source
AI summary
A method and apparatus for routing data in a wireless communication system is provided. In trusted non-3rd generation partnership project (3GPP) access, a wireless local area network (WLAN) access gateway receives parameters, which includes 3GPP core network load information and a core network routing rule, from an entity of a 3GPP system, and routes received UL data based on the received parameters through at least one of the 3GPP system and a non-3GPP system. In un-trusted non-3GPP access, an evolved packet data gateway (ePDG) receives parameters, which includes 3GPP core network load information and a core network routing rule, from an entity of a 3GPP system, and routes received UL data based on the received parameters through at least one of the 3GPP system and a non-3GPP system.