Ingress NNI Identifier for Egress Selection
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Solution Overview
Problem
Existing network-to-network interface (NNI) devices in IP-based networks, such as IMS networks, lack efficient mechanisms to optimize the selection of egress NNI devices for communication sessions, leading to suboptimal routing and resource utilization.
Innovation Solution
Incorporating a unique identifier for the ingress NNI device into signaling messages, allowing the network to select an egress NNI device that minimizes physical distance and optimizes network performance metrics by using pre-configured routing information, thereby reducing the physical distance of signaling and media paths and enhancing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional NNI device selection methods are used, then device compatibility is maintained, but routing efficiency and resource utilization deteriorate due to lack of optimization mechanisms
Solution Approach 1:
The patent applies preliminary action by pre-configuring routing information in the home subscriber server (HSS) that associates ingress NNI device identifiers with optimal egress NNI devices. This pre-computed routing information is stored and readily available when a communication session needs to be established, eliminating the need for complex real-time optimization calculations and enabling efficient routing decisions without adding operational complexity.
Solution Approach 2:
The patent introduces an intermediary mechanism where the home subscriber server (HSS) acts as a mediator between ingress and egress NNI devices. The HSS stores and provides routing information that maps ingress NNI identifiers to optimal egress NNI devices, serving as a central coordination point that simplifies the routing decision process and improves overall system efficiency without requiring direct complex interactions between NNI devices.
2Length of stationary object
If egress NNI device selection is made without optimization, then implementation simplicity is maintained, but physical distance and resource utilization worsen
Solution Approach 1:
The patent uses preliminary action by pre-configuring routing information in the HSS that contains optimized paths minimizing physical distance between networks. This pre-computed routing data includes the association between ingress NNI device identifiers and the most efficient egress NNI devices, allowing the system to select optimal routes in advance and reduce connection lengths without compromising resource utilization.
3Ease of operation
If no identifier mechanism is implemented, then message simplicity is maintained, but routing information correlation and device selection capability deteriorate
Solution Approach 1:
The patent introduces an intermediary identifier mechanism where a unique identifier for the ingress NNI device is added to signaling messages and transmitted through the network to the home subscriber server. This identifier serves as a key that enables the HSS to retrieve and correlate the appropriate routing information, facilitating accurate egress device selection without complicating the overall message structure or causing information loss.
Data Source
AI summary
Methods, devices, and storage mediums for receiving, by an ingress network-to-network interface device, a signaling message to establish a communication session; adding an identifier that identifies the ingress network-to-network interface device; transmitting the signaling message that includes the identifier to another device of a network with which the ingress network-to-network interface device belongs; selecting an egress network-to-network interface device based on the identifier and a minimum path criterion between the ingress network-to-network interface device and the egress network-to-network interface device; and transmitting the signaling message to the egress network-to-network interface device.