Transient Anchor IP Gateway Relocation in Partial Mesh Networks
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Solution Overview
Problem
Existing mobile carrier network technologies face inefficiencies in routing packet flows, particularly during mobility and across administrative domains, leading to latency and challenges in handover of active sessions.
Innovation Solution
The system employs a transient anchor in the visited network to determine whether to route packet flows along an optimized path based on the mobile node's location and mobility boundaries, signaling the home network for media renegotiation when necessary, and using policy rules to select routing paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the IP gateway is relocated when a mobile node roams to a cell connected to a different administrative domain or when transmission network restrictions prevent contact with the previous IP gateway, then mobility and roaming capability is improved, but latency and disruption to active sessions may occur
Solution Approach 1:
The patent applies preliminary action by detecting roaming conditions and initiating IP gateway relocation before active media streams are disrupted. The system monitors mobile node location and administrative domain boundaries, and proactively triggers gateway relocation when necessary, rather than waiting for session failure. This allows the network to prepare and execute the relocation during idle periods or between media streams, minimizing latency and maintaining service continuity.
2Stability of the object's composition
If the IP gateway is kept stationary to maintain active media streams, then session continuity is improved, but mobility and roaming to different administrative domains is limited
Solution Approach 1:
The patent implements dynamics by making the IP gateway selection dynamic rather than static. The system continuously monitors mobile node location, administrative domain boundaries, and network conditions, and dynamically adjusts the IP gateway assignment based on current state. This allows the gateway to be relocated when the mobile node roams to a different administrative domain or when network restrictions prevent contact with the previous gateway, while maintaining session continuity through proper handover procedures.
3Loss of time
If optimized routing is used for media streams, then latency is reduced, but the ability to handle cell transitions and mobility across administrative domains is compromised
Solution Approach 1:
The patent uses an intermediary approach by introducing a mobility management entity that mediates between the mobile node, IP gateways, and administrative domain boundaries. This intermediary monitors location information, determines when optimized routing can be maintained, and coordinates gateway relocation when mobility requirements change. The system can maintain optimized routing for media streams when conditions permit, while the intermediary ensures seamless handover when the mobile node crosses administrative domain boundaries or when network restrictions arise.
Data Source
AI summary
Methods, apparatuses and systems directed to facilitating optimized routing and mobility for communication sessions in partial mesh network deployments. According to one embodiment, routing a packet flow in a communication session includes facilitating a communication session between a first mobile node and a second mobile node. A packet flow from the first mobile node is received at a transient anchor of a visited network. The transient anchor establishes whether the packet flow is to be routed along an optimized path according to one or more routing rules. One or more of the routing rules may be based on the current cell location of the first mobile node relative to a mobility or radio coverage boundary associated with the transient anchor.