PTT Server Dynamic Location Reporting and Bearer Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless Push-to-Talk (PTT) systems inefficiently manage multicast radio bearers, leading to unnecessary consumption of air link resources and battery life due to constant location reporting, and wastage of multicast resources when talkgroup size is too small or excessive.
Innovation Solution
A wireless PTT communication system with a server that dynamically configures mobile devices to report locations and provide multicast bearer services based on thresholds, disabling location reporting when device density is low and deallocating bearers when not needed, and allocating resources only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile devices continuously report location in PTT talkgroups, then location information is always available for public safety applications, but battery life deteriorates and air link resources are wasted
Solution Approach 1:
The system dynamically adjusts location reporting behavior based on real-time talkgroup size. When the number of devices in a talkgroup exceeds a threshold, location reporting is activated; when it falls below the threshold, reporting is deactivated. This dynamic adaptation resolves the contradiction by making location reporting conditional rather than continuous.
Solution Approach 2:
The system changes the parameter of location reporting status (enabled/disabled) based on the parameter of talkgroup size. The server monitors talkgroup membership and switches the reporting state accordingly, optimizing energy consumption while maintaining location availability when needed.
2Ease of operation
If multicast bearer services are allocated for small talkgroups, then all devices can receive PTT calls, but network resources are wasted
Solution Approach 1:
The system changes the state of multicast bearer allocation based on the parameter of talkgroup size. When talkgroup size exceeds the threshold, multicast bearers are allocated; when it falls below, bearers are deallocated. This ensures network resources are optimized while maintaining PTT functionality when needed.
Solution Approach 2:
The multicast bearer allocation is dynamically adjusted based on real-time talkgroup composition. The server continuously monitors talkgroup size and activates or deactivates bearer services accordingly, preventing resource waste in small talkgroups while ensuring service availability in larger groups.
3Loss of energy
If multicast bearer services are deallocated when talkgroup size is small, then network resources are optimized, but PTT service availability deteriorates
Solution Approach 1:
The system uses the talkgroup size parameter as a trigger to change the state of bearer allocation. When the size parameter exceeds the threshold, bearers are allocated ensuring service availability; when it drops below, bearers are deallocated to optimize resources. This parameter-based control resolves the contradiction.
4Use of energy by moving object
If location reporting is disabled for small talkgroups, then battery life is improved, but location tracking capability deteriorates
Solution Approach 1:
The system changes the location reporting state based on the talkgroup size parameter. When size exceeds the threshold, reporting is enabled providing location tracking; when size is below the threshold, reporting is disabled to conserve battery. This conditional approach resolves the contradiction between energy consumption and tracking capability.
Data Source
AI summary
A wireless PTT communication system may include mobile wireless PTT communications devices, each configured to send a PTT call request, a wireless network coupling the mobile wireless PTT communications devices, and a PTT server. The PTT server may be configured to when a number of the mobile wireless PTT communications devices in a given talkgroup is greater than or equal to a first threshold, then cause each mobile wireless PTT communications device of the given talkgroup to report a respective location. The PTT server may be configured to when a number of the mobile wireless PTT communications devices in the given talkgroup is less than the first threshold, then disable each mobile wireless PTT communications device of the given talkgroup from reporting the respective location.