Gateway Apparatus for Seamless Cellular Traffic Offload
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Solution Overview
Problem
Existing communication systems face challenges in seamlessly offloading traffic from cellular networks to external networks not managed by the same operator, leading to potential disruptions and inefficiencies in traffic management.
Innovation Solution
A communication control method and gateway apparatus that relays user data from an external network to a user terminal connected to a cellular network, switches the traffic accommodation target to another network, and registers the user terminal's location in that network, ensuring seamless data transfer based on the terminal's location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traffic is switched from cellular network to external network not managed by the same operator, then traffic load of cellular network is reduced (offload), but seamless offload cannot be realized leading to communication disruptions
Solution Approach 1:
The gateway apparatus acts as an intermediary between the cellular network and external networks. It maintains a location management function that tracks user terminal locations across different networks and relays data packets between networks, enabling seamless offload without direct integration between operator-managed cellular network and non-operator-managed external networks
Solution Approach 2:
The gateway apparatus performs multiple functions: it operates as a packet gateway for data routing, maintains location management capabilities similar to HSS/MME in cellular networks, and provides network address translation between different network architectures. This multi-functionality allows a single apparatus to enable cross-operator seamless offload
2Productivity
If user terminal connects to external network for traffic accommodation, then cellular network load is reduced, but location management becomes complex requiring registration mechanisms
Solution Approach 1:
The location management function is extracted from the core cellular network infrastructure and consolidated into the gateway apparatus. This centralized extraction simplifies the overall system by having a single entity responsible for tracking user terminals across multiple networks, rather than distributing location management complexity across multiple network elements
Solution Approach 2:
The system implements feedback mechanisms where user terminals register their locations with the gateway apparatus when connecting to external networks. The gateway uses this feedback information to route data packets correctly, creating a closed-loop system that adapts to dynamic network conditions and terminal movements
Data Source
AI summary
A communication control method according to the present embodiment comprises the steps of: relaying, by a gateway apparatus in a cellular network, user data from an external network to a user terminal connecting to the cellular network; switching an accommodation target of traffic of the user terminal from the cellular network to another network not managed by an operator managing the cellular network; and relaying, by the gateway apparatus, on a basis of a location of the user terminal in the another network, the user data to the user terminal, via the another network.