Mobile Terminal WLAN-LTE Group Communication

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Solution Overview

Problem

Current mobile communication systems, such as LTE, lack a practical direct mode for group communication, especially in scenarios requiring high-frequency data transmission and low power usage, which is essential for authorities and organizations needing broadband data transmission like video communications.

Innovation Solution

A mobile terminal configuration with additional devices equipped with loudspeakers, microphones, and push-to-talk buttons, featuring multiple communication modules for wireless and wired connections, enabling communication in LTE networks and WLAN networks to facilitate direct group communication over extended ranges, similar to TETRA or P25 systems, by establishing ad hoc WLAN networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If LTE technology is used for broadband data transmission, then data transmission capability is improved, but direct mode communication capability deteriorates

Engineering Contradiction:

Improvebroadband data transmission capabilityVSAvoiddirect mode communication capability

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent combines LTE communication modules with WLAN communication modules in a single mobile terminal device. The LTE module handles broadband data transmission while the WLAN module enables direct mode communication, merging two different communication systems into one integrated device that can operate in both network-dependent and network-independent modes.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The mobile terminal device is designed with multi-functionality, supporting both LTE network communication for broadband data transmission and WLAN-based direct mode communication. This universal design allows the device to adapt to different operational requirements, whether network infrastructure is available or not.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If LTE mobile telephones are used, then broadband data transmission is enabled, but direct mode for direct communication is not practical

Engineering Contradiction:

Improvebroadband data transmissionVSAvoiddirect mode communication

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The patent merges LTE communication functionality with WLAN communication functionality in the same mobile terminal. The LTE module provides broadband data transmission capability while the WLAN module enables practical direct mode communication, combining the advantages of both systems in a single device.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The WLAN communication module acts as an intermediary that enables direct mode communication between LTE mobile telephones. By using WLAN technology as a mediator, the system overcomes the limitation of LTE's protocol structure that prevents practical direct mode communication.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If WLAN modules are used in mobile telephones, then local voice and data communication is possible, but point-to-point connection over several hundred meters is not possible

Engineering Contradiction:

Improvelocal voice and data communicationVSAvoidcommunication range

Core Design Contradiction:

Ease of operationVSLength of moving object

Solution Approach 1:

The patent combines WLAN communication modules with LTE communication modules in the same mobile terminal. The WLAN module handles local voice and data communication while the LTE module extends the communication range to several hundred meters, merging the capabilities of both communication technologies.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The mobile terminal is designed with multi-functionality, supporting both WLAN-based local communication and LTE-based extended range communication. This universal design allows the device to operate effectively at different ranges depending on the communication requirements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Adaptability or versatility

If TETRA or P25 systems are used, then direct mode communication is possible, but broadband data transmission capability is limited

Engineering Contradiction:

Improvedirect mode communication capabilityVSAvoidbroadband data transmission capability

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent merges TETRA or P25 communication modules with LTE communication modules in the same mobile terminal. The TETRA/P25 module enables direct mode communication while the LTE module provides broadband data transmission capability, combining the advantages of both systems.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The mobile terminal is designed with multi-functionality, supporting both direct mode communication (inherent in TETRA/P25) and broadband data transmission (provided by LTE). This universal design allows the device to perform both specialized radio communication and high-speed data transmission.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11510032B2Mobile terminal, subgroup of mobile terminals, and method for setting up a communication group in a direct mode

Publication Date: 2022.11.22 PEIKER HLDG GMBH

AI summary

The present invention relates to a mobile terminal which comprises a mobile telephone and an additional device. In this case, the additional device comprises a second communication module, wherein the second communication module is designed such that it enables, as a participant of a WLAN network, a wireless third communication connection to this WLAN network.