Modular WiFi MIMO Antenna System for Weight Reduction

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Solution Overview

Problem

Modular portable communication devices face inefficiencies in WiFi connectivity, as combined devices often have twice the weight in networking components without significantly improving networking performance, indicating a need for enhanced WiFi functionality.

Innovation Solution

A system where a first device with a WiFi transceiver and antenna docks with a second device, forming a MIMO antenna system for improved data throughput, and establishes a direct WiFi connection using WiFi Direct, allowing seamless communication even when undocked, with automatic transfer of WiFi network data and passcodes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If both base device and add-on module have independent WiFi networking components, then each device can function independently, but the combined device has twice the weight in networking components without significantly improving networking performance

Engineering Contradiction:
Improveindependent device functionalityVSAvoidweight of networking components
Core Design Contradiction:
Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The patent combines the WiFi networking components of the base device and add-on module into a single shared system. When docked together, the devices share one WiFi transceiver and antenna, allowing both devices to access the network simultaneously without duplicating hardware. This merging eliminates the weight penalty while maintaining independent functionality through software-based connection management.

Inventive Principle:
Principle #5Merging (Combining)

2Weight of moving object

If WiFi networking components are shared between base device and add-on module, then weight is reduced, but networking performance and data throughput may be compromised

Engineering Contradiction:
Improveweight of networking componentsVSAvoiddata throughput
Core Design Contradiction:
Weight of moving objectVSProductivity

Solution Approach 1:

The patent implements dynamic resource allocation for the shared WiFi components. The system can switch between different operational modes: when one device is actively using the WiFi connection, the other device can wait or use alternative communication methods. This dynamic time-division approach allows a single transceiver to serve multiple devices effectively, maintaining acceptable data throughput while reducing hardware weight.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If devices establish direct WiFi connection using WiFi Direct, then seamless communication is achieved when undocked, but connection establishment and management becomes more complex

Engineering Contradiction:
Improveseamless communication when undockedVSAvoidconnection establishment and management
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent performs preliminary configuration of WiFi Direct connections while devices are docked together. During the docked state, the system pre-establishes communication parameters, exchanges security credentials, and configures direct connection settings between devices. This preliminary setup eliminates the need for complex manual configuration when devices are separated, enabling seamless reconnection while reducing the perceived complexity for users.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS9614949B2WIFI connectivity in a modular portable cellular device
Publication Date: 2017.04.04 MOTOROLA MOBILITY LLC
  • US9614949B2 patent drawing
  • US9614949B2 patent drawing
  • US9614949B2 patent drawing

AI summary

A system and method of networking in a portable device in a modular device environment detects connection of a second device to the portable device, and configures the second device to form a parallel network connection with the portable device. In an embodiment, the second device is configured to form a direct WiFi connection to the portable device when the devices are separated.