Heterogeneous Network Location Update via Unified Information Server
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Solution Overview
Problem
In heterogeneous networks, multimode terminals frequently update location information across multiple interfaces, leading to excessive network interactions and power consumption due to the need for each interface to detect and report its location periodically.
Innovation Solution
A location update method where a multimode terminal reports location information through one interface, allowing an information server to update all interfaces by searching pre-stored location area mapping information, reducing the need for frequent updates and interactions across the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If every interface of the multimode terminal initiates location update periodically through its own interface, then the location information of each interface is kept updated, but the network-side information interactions become too frequent and the system load and power consumption increase
Solution Approach 1:
The patent merges multiple location update requests from different interfaces into a single update operation. When the terminal is in a heterogeneous network environment, instead of each interface (WiFi, WiMAX, 3G) independently initiating location updates, the system consolidates these updates through a unified mechanism that leverages the terminal's current location state and pre-stored location area mapping information, thereby reducing redundant signaling and power consumption while maintaining location accuracy
Solution Approach 2:
The system performs preliminary action by pre-storing location area mapping information that correlates location areas across different access networks. This pre-established mapping allows the network to quickly determine whether a location update is actually needed when the terminal moves between networks, avoiding unnecessary update procedures and reducing power consumption while ensuring location information remains accurate
2Reliability
If every interface of the multimode terminal initiates location update periodically, then the location information of each interface is kept updated, but the network-side information interactions become too frequent and system load increases
Solution Approach 1:
The patent merges multiple location update requests from different interfaces into a single update operation. When the terminal is in a heterogeneous network environment, instead of each interface (WiFi, WiMAX, 3G) independently initiating location updates, the system consolidates these updates through a unified mechanism that leverages the terminal's current location state and pre-stored location area mapping information, thereby reducing redundant signaling and system load while maintaining location accuracy
Solution Approach 2:
The system uses copying by reusing the terminal's current location information and the pre-stored location area mapping to determine whether updates are needed for other interfaces. Instead of forcing full updates through each interface, the network copies the location update logic and applies it selectively based on the terminal's actual movement patterns and network conditions, reducing system load while maintaining accuracy
3Device complexity
If all interfaces undergo location update process through the currently enabled interface, then location update can be simplified, but too frequent information interactions occur at the network side
Solution Approach 1:
The system performs preliminary action by pre-storing location area mapping information that correlates location areas across different access networks. This pre-established mapping allows the network to quickly determine whether a location update is actually needed when the terminal moves between networks, avoiding unnecessary update procedures and reducing information interaction frequency while keeping the process simple
Solution Approach 2:
The system applies self-service by enabling the network to automatically determine whether location updates are needed based on the terminal's current location area and the pre-stored mapping information. The network serves itself by making intelligent decisions about update necessity without requiring complex coordination between multiple interfaces, thereby reducing information interaction frequency while maintaining simplicity
Data Source
AI summary
A location update method, and a heterogeneous network communications system and a device are provided herein. The method includes: an information server receives a location update request message from a multimode terminal; the information server searches the pre-stored location area mapping information for the location area information of the second interface; and the information server sends the location update request message of the second interface to a second Paging Coordinator (PC) corresponding to the second interface, where the request message carries the found location area information of the second interface so that the second PC can update existing location area information of the second interface. The system includes an information server, a first PC and a second PC. Therefore, the interfaces of the multimode terminal do not need to initiate location update frequently, message interactions between the terminal and the network are reduced, and not all interfaces of the multimode terminal need to report location area information, thus saving power.