Managed Remote Access Session Handover for Wireless Devices
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Solution Overview
Problem
Current wireless communication systems face challenges in seamlessly transitioning Wireless Transmitter/Receiver Units (WTRUs) between local IP access (LIPA) sessions and managed remote access (MRA) sessions as they move between networks, leading to disruptions in service continuity and inefficient data path management.
Innovation Solution
The implementation of a method that allows for the transition of LIPA sessions to MRA sessions by establishing a path between Access Points (APs) via a gateway, informing the gateway of the session transition, and managing the data path through the use of Local Gateways (LGWs) and evolved Node Bs (eNBs) to ensure continuous service and optimized resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a WTRU moves between networks while maintaining LIPA session, then local IP access is preserved, but service continuity is disrupted when transitioning to another network
Solution Approach 1:
The system dynamically transitions the data path from LIPA to MRA based on WTRU mobility status. When the WTRU moves out of the local network coverage, the system automatically switches from local IP access through the LGW to managed remote access through the eNB and core network, ensuring continuous service without interruption.
Solution Approach 2:
The gateway acts as an intermediary between the LIPA and MRA sessions. It receives the handover request, establishes the MRA data path, and coordinates the transition, ensuring that the WTRU maintains continuous IP connectivity while moving between local and remote networks.
2Productivity
If LIPA session is maintained during network movement, then local network access is preserved, but data path management becomes inefficient
Solution Approach 1:
The data path is dynamically adjusted based on network conditions and WTRU location. The system transitions from the LIPA data path (through LGW) to the MRA data path (through eNB and core network gateway) when the WTRU moves, optimizing data transmission efficiency while maintaining session continuity.
3Adaptability or versatility
If handover between LIPA and MRA sessions is implemented, then network mobility is enabled, but session disruption occurs during transition
Solution Approach 1:
The system performs preliminary actions by establishing the MRA data path before the WTRU actually moves out of local network coverage. The gateway is informed of the upcoming handover, and the MRA session is prepared in advance, ensuring seamless transition without service disruption.
Data Source
AI summary
Methods, apparatus, and systems are disclosed for handover of a Wireless Transmitter/Receiver Unit (WTRU) moving between a local network and another network. The WTRU established a local IP access (LIPA) session in the local network via a first Access Point (AP). The method includes receiving, by a second AP in the other network, a request to connect to the other network; and transitioning the LIPA session in the local IP network to a managed remote access (MRA) session in the other network. The transitioning includes establishing a path between the first AP and the second AP via a gateway, and informing the gateway of the transition to the MRA session.