Subscriber Information Management for Wireless Device Location
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Solution Overview
Problem
In wireless communication systems, there is a challenge in efficiently locating misplaced or lost external devices, such as cordless handsets or earphones, which disconnect from the main phone, as existing methods lack effective tracking and retrieval mechanisms.
Innovation Solution
A wireless communication system that includes a subscriber information management device and mobile phone terminals, where the management device transmits the location of a lost external device to nearby terminals, which search for it using short-distance wireless communication, allowing for accurate identification and notification of the device's location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing methods are used to locate misplaced external devices, then the search process becomes complex and time-consuming, but the location accuracy and efficiency remain insufficient
Solution Approach 1:
The patent applies preliminary action by pre-registering location information of external devices with the subscriber information management device before the devices are lost. When a device is misplaced, the pre-registered location data enables immediate retrieval and notification, eliminating the need for time-consuming search processes. This resolves the contradiction by preparing location data in advance, making the search operation both efficient and fast.
2Reliability
If independent communication protocols are implemented in external devices for location tracking, then location tracking capability is improved, but power consumption increases
Solution Approach 1:
The patent uses the mobile phone terminal as an intermediary device that leverages its existing communication capabilities to track and locate external devices. Instead of equipping external devices with independent communication protocols, the mobile phone acts as a mediator that communicates with both the external device and the subscriber information management device. This approach maintains reliable location tracking while avoiding additional power consumption in the external device, as the tracking function is performed by the mobile phone's existing infrastructure.
3Area of stationary object
If comprehensive search requests are transmitted to all terminals in the network, then search coverage is improved, but network traffic and processing load increase
Solution Approach 1:
The patent applies local quality by notifying only mobile phone terminals within the specific search target area where the external device is lost, rather than broadcasting search requests to all terminals in the network. The subscriber information management device uses the pre-registered location information to identify and notify only the relevant local terminals. This resolves the contradiction by providing sufficient search coverage within the affected area while minimizing unnecessary network traffic and processing load elsewhere.
Data Source
AI summary
A wireless communication system includes: a first wireless communication terminal to register an external device, wherein a subscriber information management device transmits a location of the external device to the first wireless communication terminal based on a search result of the external device based on a search request for the external device, the search request being transmitted from the subscriber information management device to a second wireless communication terminal within a search target area, the second wireless communication terminal being identified by the subscriber information management device based on registration information including certain information and location information of the external device.