Device-to-Device Discovery Message Position Encoding

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Solution Overview

Problem

Current device-to-device communication systems rely on mobile communication networks for location-based services, which can be unreliable and inconvenient, especially when devices are out of network coverage.

Innovation Solution

A method for transmitting discovery messages between user equipment using a device-to-device communication mode, allowing direct exchange of position information without network involvement, using a common air interface and encoding geographical position data efficiently within the message.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If device-to-device communication systems rely on mobile communication networks for location-based services, then network infrastructure support is available, but reliability deteriorates when devices are out of network coverage

Engineering Contradiction:

Improvereliability of location-based servicesVSAvoidindependence from network coverage

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent extracts the position information transmission function from the mobile communication network infrastructure and implements it directly between user equipments. The first user equipment generates and transmits discovery messages containing position information parts directly to the second user equipment via device-to-device communication, removing the mandatory dependency on network infrastructure for location-based services to work.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The discovery message acts as an intermediary carrier that transports position information between user equipments. Instead of relying on the mobile communication network as the intermediary, the patent uses directly exchanged discovery messages containing position information parts to enable location-based services independently of network coverage.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If position information is transmitted through mobile communication networks, then centralized service management is possible, but network traffic increases and convenience decreases

Engineering Contradiction:

Improveconvenience of location-based servicesVSAvoidnetwork traffic

Core Design Contradiction:

Ease of operationVSQuantity of substance

Solution Approach 1:

The patent extracts the position information exchange function from the mobile communication network and implements it directly between user equipments. By transmitting position information parts through discovery messages via device-to-device communication, the system eliminates unnecessary network traffic while improving convenience for location-based services.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS9936371B2Discovery message transmission for device to device communication

Publication Date: 2018.04.03 DEUTSCHE TELEKOM AG

AI summary

A method for transmitting a discovery message for device to device communication from a first user equipment to a second user equipment includes: receiving or generating, by the first user equipment, a position information defining a geographical position; generating, by the first user equipment, the discovery message; and transmitting, by the first user equipment, the discovery message to the second user equipment using a common air interface of the first user equipment and the second user equipment. The discovery message comprises a position information part such that at least a part of the position information is transmitted from the first user equipment to the second user equipment.