PTT Device Automatic Talkgroup Channel Switching

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Solution Overview

Problem

Conventional push-to-talk (PTT) handsets require manual channel changes by users, leading to errors and increased time when moving a talkgroup to a new channel, as reliance on voice instructions for channel changes is prone to mistakes and inefficiencies.

Innovation Solution

A PTT device with a processor that automatically switches all or some members of a talkgroup to a new channel upon detecting a change in the channel selector input while the PTT input is activated, by transmitting a notification to other devices in the talkgroup and switching the transmitter to the new channel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If manual channel changes are required by users, then device complexity is reduced, but time consumption and error rate increase

Engineering Contradiction:
Improvedevice complexityVSAvoidtime consumption
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

The system pre-configures talkgroup members with channel change notification capabilities. When a channel change is initiated, the system automatically notifies all members in advance, allowing them to switch channels without manual intervention. This preliminary setup enables automated channel changes while keeping device complexity low.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces an automated notification mechanism as an intermediary between the channel change initiator and other talkgroup members. This mediator automatically transmits channel change information to all members, eliminating the need for manual channel changes by each user while reducing overall time consumption.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If manual channel changes are required by users, then device complexity is reduced, but error rate increases

Engineering Contradiction:
Improvedevice complexityVSAvoiderror rate
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The system implements a feedback mechanism where channel change notifications are automatically transmitted to all talkgroup members. This feedback loop ensures that all members receive accurate channel change information simultaneously, eliminating errors caused by manual channel changes while maintaining simple device architecture.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The automated notification system acts as an intermediary that ensures accurate and consistent channel change information is transmitted to all members. This mediator eliminates human error in channel selection while keeping individual device complexity low.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Loss of time

If automated channel switching is implemented, then time efficiency and error reduction improve, but device complexity increases

Engineering Contradiction:
Improvetime efficiencyVSAvoiddevice complexity
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The system performs preliminary configuration of talkgroup members with automated notification capabilities. This advance setup enables fast, error-free channel changes without requiring complex real-time processing during the actual channel switch, thus improving time efficiency while limiting the increase in device complexity.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The automated notification system enables talkgroup members to self-switch channels without human intervention. Each device automatically receives and processes channel change notifications, eliminating manual operations and improving time efficiency while keeping individual device complexity manageable through standardized self-service functionality.

Inventive Principle:
Principle #25Self-service

4Reliability

If automated channel switching is implemented, then error rate decreases, but device complexity increases

Engineering Contradiction:
Improveerror rateVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The automated feedback mechanism transmits channel change notifications to all talkgroup members, ensuring accurate and consistent information distribution. This feedback system reduces errors by eliminating manual channel selection while implementing complexity only at the notification transmission level, not in each individual device.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The automated notification mechanism serves as an intermediary that centralizes the complexity of error-free channel change coordination. By placing the intelligent notification system at the network level rather than in each device, the solution achieves high reliability while minimizing the complexity burden on individual devices.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS8982763B2Method and device for maneuvering talk groups to a new channel
Publication Date: 2015.03.17 MOTOROLA SOLUTIONS INC
  • US8982763B2 patent drawing
  • US8982763B2 patent drawing
  • US8982763B2 patent drawing

AI summary

A process for communicating with a plurality of push-to-talk (PTT) devices in a wireless network of PTT devices includes, at a first one of the PTT devices, responsive to detecting a change in selected channel, via a channel selector input, from the first channel to a second channel while a PTT input is activated: transmitting, to other PTT devices in a first talkgroup on the first channel, a notification that further transmissions by the PTT device will be made in the second channel, switching the transmitter from the first channel to the second channel, and transmitting further communications to the one or more other PTT devices in a second talkgroup on the second channel.