Access Node Mapping Information Acquisition for Mobile Switching
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Solution Overview
Problem
Existing network technologies face challenges in managing mobility and routing efficiency due to the dual function of IP addresses, leading to semantic overload and increased routing loads, particularly in peer-to-peer communications, where maintaining accurate mapping information across multiple correspondent nodes is complex and resource-intensive.
Innovation Solution
The proposed method involves an access node acquiring mapping information of a correspondent node by inquiring a home Identity Location Register (ILR) or a first access node when the identification and locator mapping information cannot be locally searched, optimizing the switch process by reducing the need for storing correspondent node tables and simplifying signaling interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access switch router stores the correspondent node table for each mobile terminal, then the routing information can be maintained, but the memory consumption and CPU processing performance are heavily consumed
Solution Approach 1:
The patent extracts the correspondent node table storage function from the access switch router and relocates it to the identity location register. This extraction removes the memory burden from the access switch router while maintaining routing information accuracy through centralized storage at the ILR, which manages location information for all terminals in the network.
Solution Approach 2:
The patent introduces the identity location register as an intermediary between the access switch router and the routing information. The ILR acts as a mediator that stores and manages correspondent node tables, allowing access switch routers to query routing information without storing it locally, thus reducing memory consumption while maintaining reliability.
2Reliability
If the access switch router stores the correspondent node table for each mobile terminal, then the routing information can be maintained, but the signaling flow processing becomes complicated
Solution Approach 1:
The patent extracts the correspondent node table storage and management function from the access switch router and relocates it to the identity location register. This extraction simplifies the signaling flow at access switch routers, as they no longer need to maintain complex correspondent node tables locally, reducing device complexity while maintaining routing accuracy through centralized management at the ILR.
Solution Approach 2:
The identity location register serves as an intermediary that centralizes the management of correspondent node tables. This intermediary approach simplifies the signaling flow processing at access switch routers by eliminating the need for them to maintain and update complex routing tables locally, reducing device complexity while ensuring routing information accuracy through centralized control.
3Measurement precision
If the identity location register synchronizes information of all correspondent nodes, then the mapping information accuracy is maintained, but the processing load increases
Solution Approach 1:
The patent segments the network functions by separating the terminal mobility management functions at the access switch router from the correspondent node table management functions at the identity location register. This segmentation allows the ILR to focus on maintaining accurate mapping information for correspondent nodes without bearing the full processing load of terminal mobility management, thus maintaining measurement precision while reducing overall processing load through functional distribution.
Data Source
AI summary
An information obtaining, information notification, data message forwarding and switch method and an access node during a terminal switch process are provided. The access node comprises an opposite end information storage unit, which is set to store identification and locator mapping information of correspondent nodes of all accessed terminals; an message transceiver unit, which is set to: after establishing a connection with the terminal that switches to the local access node, receive a data message sent by the terminal to the correspondent node, according to the identification of the correspondent node in the data message, initiate an inquiry to a home ILR or an original access node of the terminal before switch-in to acquire and locally store the mapping information of the correspondent node, if the identification and locator mapping information of the correspondent node cannot be locally searched out.