Emergency Relay Communication for UEs Outside Cellular Coverage
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Solution Overview
Problem
Existing wireless communication systems struggle to support emergency communications, such as voice calls and SMS messages, for user equipment (UE) devices in areas without cellular coverage, which is a critical gap in emergency response scenarios.
Innovation Solution
A method and system enabling UE devices to establish emergency communications through in-service UEs or cloud servers using layer 2 or layer 3 relays, bypassing the need for cellular coverage by leveraging non-cellular communication technologies like Wi-Fi and Bluetooth, and utilizing programmable hardware elements for automatic relay setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cellular coverage is used for emergency communications, then communication reliability is improved, but coverage area is limited to cellular network regions
Solution Approach 1:
The patent introduces in-service UEs as intermediary relay nodes to forward emergency communications from out-of-coverage UEs to the cellular network. The relay UE acts as a mediator that establishes a communication bridge between the isolated UE and the PSAP, enabling emergency calls without direct cellular coverage while maintaining communication reliability through the relay path.
2Area of stationary object
If relay mechanisms are implemented for emergency communications, then coverage area is extended, but device complexity increases
Solution Approach 1:
The patent implements self-service mechanisms where UEs automatically discover available relay UEs and establish emergency communication paths without manual configuration. The system autonomously selects relay nodes, manages connection establishment, and handles signaling procedures, reducing the operational complexity burden on end users while extending coverage area.
3Ease of operation
If automatic relay setup is used, then ease of operation is improved, but extent of automation increases system requirements
Solution Approach 1:
The patent performs preliminary actions by pre-configuring UEs with emergency communication capabilities, including pre-established relay discovery mechanisms and pre-defined protocols for automatic relay selection. This preparation enables instant automated relay setup when emergency conditions arise, improving ease of operation during critical moments while managing automation complexity through standardized pre-planned procedures.
Data Source
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AI summary
Apparatuses, systems, and methods for emergency communications (e.g., voice calls and/or SMS messages) for UE's without cellular coverage (e.g., in non-cellular coverage). A UE may establish, while out of range of cellular service, a peer-to-peer communication session with a relay UE using a channel in an unlicensed frequency band. The UE may transmit, using the peer-to-peer communication session, an emergency notification to the relay UE. The emergency notification may include an approximate location of the UE. Further the UE may communicate with a Public Safety Answering Point (PSAP), where the communications may be relayed between the UE and the PSAP by the relay UE. The approximate location of the UE may be based, at least in part, on a location of the relay UE and determining the approximate location of the UE may include performing a ranging procedure with the relay UE.