Proxy Call Routing via Personal Area Network Detection
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Solution Overview
Problem
Portable phones are unreliable when lost, forgotten, or with a dead battery, leading to missed calls as there is no way to receive important calls unless the device is present and operational.
Innovation Solution
Equipping portable phones with a personal area network (PAN) detection mechanism and a buddy list system that allows proxy signaling to the wireless telephone network to route calls to a designated proxy phone if the buddy's phone is not present, using a key fob or electronic identifier for authentication and notification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a portable phone is carried by a user, then communication is enabled, but the phone may be lost, forgotten, or have a dead battery causing missed calls
Solution Approach 1:
The patent introduces a PAN detection mechanism that acts as an intermediary between the user's portable phone and the wireless telephone network. This mechanism detects electronic identifiers (key fobs) in the personal area network and automatically initiates proxy call routing when the primary phone is unavailable, eliminating the need for user intervention and ensuring reliable call reception regardless of phone availability
Solution Approach 2:
The system performs preliminary actions by proactively detecting the absence or unavailability of the portable phone through PAN detection before calls are missed. The proxy call routing is pre-configured and automatically activated when the phone is detected as unavailable, preventing missed calls rather than addressing them after the fact
2Reliability
If proxy call routing is implemented, then call reception reliability is improved, but device complexity increases
Solution Approach 1:
The portable phone is enhanced with multi-functionality by integrating both the PAN detection mechanism and proxy call routing capabilities into a single device. This allows the phone to serve multiple purposes: normal communication, automatic detection of unavailability, and initiation of proxy routing, thereby improving reliability without requiring separate independent systems
Solution Approach 2:
The system implements self-service by automatically detecting when the portable phone is unavailable through PAN detection and autonomously initiating proxy call routing without requiring user intervention. The phone monitors its own availability status and automatically activates the appropriate call reception mode, reducing complexity by eliminating manual configuration and user actions
Data Source
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AI summary
A portable phone is equipped with a personal area network (PAN) detection mechanism to detect all portable phones and electronic identifiers (e.g., key- fobs) in its PAN. A buddy list is included in the portable phone. If an electronic identifier is detected, such as from a key fob, but its corresponding portable phone is not, a proxy signal mechanism signals to the wireless telephone network that the phone may receive calls for a different phone. In response, the wireless telephone network routes calls for the different phone to the proxy phone* instead. In this manner a phone may change functions automatically as devices enter and leave the PAN.