Dynamic Talk Group Formation via Movement Direction
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Solution Overview
Problem
Current radio access networks face challenges in dynamically and automatically forming location-based groups for responding to incidents, as the time required for dispatchers to manually locate and form groups of subscriber units is unacceptably long, especially when incidents occur at unexpected locations and times.
Innovation Solution
An infrastructure controller device is used to dynamically form talk groups based on the movement of subscriber units relative to a defined incident location, receiving requests from subscriber units or dispatch consoles, determining the direction of movement of multiple subscriber units, and forming talk groups that include units moving towards the incident location while excluding those moving away.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If manual formation of talk groups is used, then dispatcher control is maintained, but response time becomes unacceptably long
Solution Approach 1:
The system pre-establishes geographic zones and pre-identifies subscriber units within those zones before incidents occur. When an incident is reported, the talk group is formed immediately by selecting from pre-identified units, eliminating the time-consuming manual search and group creation process.
Solution Approach 2:
The system automatically performs talk group formation without requiring dispatcher intervention. The infrastructure controller autonomously identifies suitable subscriber units based on incident location and movement direction, and creates the talk group automatically, allowing the system to serve itself rather than relying on manual operations.
2Measurement precision
If static geographic zones are used for group formation, then group creation is fast, but accuracy of including relevant units is reduced
Solution Approach 1:
The system transitions from static zone-based selection to dynamic selection based on real-time subscriber unit movement data. The infrastructure controller continuously monitors movement directions and dynamically adjusts talk group composition to include only units moving towards the incident location, ensuring both accuracy and rapid formation.
Solution Approach 2:
The system uses real-time feedback from subscriber unit movement data to adjust talk group formation. The infrastructure controller receives continuous location and movement information, processes this feedback, and automatically updates the talk group composition to reflect current conditions, ensuring accurate inclusion of relevant units.
3Productivity
If all units in a geographic area are included, then coordination is simplified, but communication efficiency decreases
Solution Approach 1:
The system extracts only the necessary subscriber units from the broader geographic area by filtering based on movement direction towards the incident. This selective extraction creates a focused talk group containing only units that will actually reach and respond to the incident, improving communication efficiency by excluding irrelevant units.
Data Source
AI summary
A process for dynamic talk group formation in a wireless communication system as a function of subscriber unit movement relative to a defined incident location includes receiving, at an infrastructure controller device from one of a third subscriber unit and a dispatch console, a request for forming a new talk group relative to a defined incident location. The infrastructure controller device determines a direction of movement of a plurality of subscriber units relative to the defined incident location. The infrastructure controller device then forms a talk group including a first subscriber unit from the plurality of subscriber units determined to be moving towards the defined incident location and not including a second subscriber unit from the plurality of subscriber units determined to not be moving towards the defined incident location.