V2V Ad Hoc Network Spatial Relationship Detection

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Solution Overview

Problem

Mobile ad hoc networks face challenges in dynamic traffic routing due to the random movement of nodes, requiring increased bandwidth, power, and complexity, especially in peer-to-peer, remote-to-remote, and dynamic traffic scenarios where stable routes need frequent reconstruction.

Innovation Solution

Mobile electronic devices detect and determine spatial relationships with other devices within a predetermined distance using signal strength, frequency changes, and directional antenna arrays to establish ad hoc wireless connections, enabling the transmission of vehicle dynamics data and control signals for cooperative driving functions like collision avoidance and cruise control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If mobile ad hoc networks use dynamic routing to accommodate random node movement, then network adaptability is improved, but bandwidth consumption and system complexity increase

Engineering Contradiction:

Improvenetwork adaptabilityVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the mobile ad hoc network into infrastructure-based cells, where each cell is managed by a base station. This division allows localized routing decisions within cells while maintaining overall network adaptability, reducing the complexity burden on individual nodes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces base stations as intermediary nodes that facilitate communication between mobile devices. These intermediaries handle complex routing and signaling functions, allowing mobile nodes to maintain simpler protocols while the network as a whole achieves high adaptability through the coordinating base stations.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If mobile ad hoc networks establish frequent route reconstructions for dynamic traffic, then communication reliability is improved, but power consumption increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent establishes preliminary routing paths through base stations before mobile nodes need to communicate. Base stations pre-coordinate routes and maintain buffer information about mobile device locations, so when communication is needed, the path is already prepared or can be quickly activated without extensive real-time signaling.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements periodic routing updates and location refreshes rather than continuous or event-driven updates. Mobile nodes and base stations exchange routing information at scheduled intervals, maintaining sufficient communication reliability while significantly reducing the power consumption associated with frequent route reconstructions.

Inventive Principle:

Principle #19Periodic action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution enhances network efficiency and safety by allowing vehicles to share and respond to real-time data on speed, direction, and position, improving traffic management and reducing collisions through coordinated vehicle control.

Implementation Method 1

detecting a second mobile electronic device within a predetermined distance of a first mobile electronic device, and determining a spatial relationship of the second mobile electronic device relative to the first mobile electronic device. In some embodiments, the spatial relationship may be determined based on a signal provided by the second mobile electronic device.

Methodology Applied

Scientific EffectSignal strength:

Implementation Method 2

The traveling vector may be determined based on changes in a received signal strength of the signal, changes in perceived frequency and/or wavelength of the signal

Methodology Applied

Scientific EffectDoppler effect: Doppler Effect

Data Source

PatentUS10229587B2Providing mobile ad hoc cooperative communication systems and related devices for vehicle-to-vehicle communication

Publication Date: 2019.03.12 AT&T INTELLECTUAL PROPERTY I L P

AI summary

A method of operating a mobile electronic device includes detecting at least one other mobile electronic device within a predetermined distance of the mobile electronic device, and determining a spatial relationship of the at least one other mobile electronic device relative to the mobile electronic device. An ad hoc wireless connection is established with the at least one other mobile electronic device based on the determined spatial relationship. Data may be transmitted to and/or received from the at least one other mobile electronic device over the ad hoc wireless connection based on the determined spatial relationship. Related systems, devices, and computer program products are also discussed in the context of vehicle-to-vehicle communication.