Foreign Agent Anchor Paging Controller Address Update
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Solution Overview
Problem
In the WiMAX communication system, when a mobile station's anchor paging controller is redirected due to movement, the foreign agent lacks the address of the new anchor paging controller, preventing successful data transmission and paging process implementation.
Innovation Solution
An information management method where the foreign agent receives and stores the information of the new anchor paging controller's address through specific messages, enabling interaction and successful paging processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the anchor paging controller is redirected to a new location, then the mobile station can be served from a closer base station, but the foreign agent loses track of the new anchor paging controller address
Solution Approach 1:
The patent implements a feedback mechanism where the anchor paging controller sends its current address information back to the foreign agent through the base station. When the anchor PC is redirected, it transmits a feedback message containing its new address to the FA, ensuring the FA maintains up-to-date information about the anchor PC's location without requiring complex routing tables or manual updates.
Solution Approach 2:
The anchor paging controller performs self-service by automatically providing its own address information to the foreign agent. Instead of requiring the network operator to manually update routing information or the FA to actively query for the anchor PC's location, the anchor PC autonomously communicates its address, simplifying the overall system architecture.
2Reliability
If the foreign agent stores detailed location information of mobile stations, then paging can be performed accurately, but the system complexity increases
Solution Approach 1:
The patent extracts the location information management function from the foreign agent and relocates it to the anchor paging controller. The FA no longer needs to store or manage detailed location information of mobile stations; instead, it simply forwards messages to the anchor PC, which maintains the location information in its local location register. This extraction reduces the FA's complexity while preserving paging accuracy.
Solution Approach 2:
The anchor paging controller acts as an intermediary between the foreign agent and the mobile station. It receives paging requests from the FA, consults its location register to determine the MS's current serving base station, and then routes the paging message appropriately. This intermediary role allows the FA to remain simple while achieving reliable paging through the anchor PC's location management capabilities.
Data Source
AI summary
An information management method and an information management system are provided. The method mainly includes the following steps. A first message is sent to a foreign agent (FA) of a mobile station (MS) after a paging controller (PC) is redirected. The first message includes information of a new PC after redirection. The FA stores the information of the new PC and sends a response message to the first message to the PC. The following technical effects are achieved by the present invention through the above technical solutions. An anchor PC before redirection or a new anchor PC after redirection reports an ID of the new anchor PC to the FA, so the FA gets to know an address of the new anchor PC when paging and thus implements the paging process successfully.