PTT One-Touch Calling via DRX Policy Optimization
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Solution Overview
Problem
Push-to-talk (PTT) over cellular platforms face inefficiencies in call setup times due to two-touch dialing, which can be as high as 3.9 seconds, and existing predictive wakeup technologies may not sufficiently reduce these times.
Innovation Solution
Implementing a discontinuous reception (DRX) mode policy based on PTT usage patterns to optimize DRX cycle times, allowing for one-touch calling by adjusting the radio interface layer parameters of client devices and servers, thereby reducing call setup times and conserving battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If two-touch dialing is used to initiate PTT calls, then call setup time is reduced compared to traditional dialing, but call setup time remains high (up to 3.9 seconds) and user experience is degraded
Solution Approach 1:
The system performs preliminary actions by pre-configuring DRX mode policies and analyzing usage patterns in advance. The server pre-processes usage data and generates optimized DRX policies before they are applied to client devices, enabling faster call setup when users initiate PTT calls without requiring real-time processing during the calling moment.
Solution Approach 2:
The system dynamically changes DRX cycle time parameters based on analyzed usage patterns. By adjusting the DRX cycle duration according to historical PTT usage behavior, the system optimizes the balance between power consumption and call setup speed, achieving faster response times for frequent PTT users while maintaining battery efficiency.
2Speed
If DRX cycle time is reduced to enable one-touch calling, then call setup time decreases, but battery consumption increases
Solution Approach 1:
The system implements dynamic DRX cycle adjustment rather than using fixed settings. The DRX cycle time is continuously optimized based on real-time usage patterns analyzed by the server, allowing the system to adaptively change parameters to achieve the fastest possible call setup speed while minimizing battery consumption through pattern-based optimization.
Solution Approach 2:
The system employs feedback mechanisms where the server continuously collects PTT usage data from client devices, analyzes patterns, and generates updated DRX mode policies. This closed-loop feedback system ensures that DRX parameters are continuously optimized based on actual usage behavior, balancing call setup speed improvements with battery conservation.
3Loss of time
If predictive wakeup technology is implemented, then call setup time is reduced, but the reduction is insufficient and further optimization is needed
Solution Approach 1:
The system extends predictive wakeup by performing preliminary analysis of usage patterns and pre-configuring optimized DRX policies. Rather than simply waking up the device, the system proactively analyzes historical data, determines optimal DRX parameters, and prepares the network interface in advance for faster PTT call initiation.
Solution Approach 2:
The system goes beyond basic predictive wakeup by dynamically changing multiple DRX-related parameters including cycle time, mode selection, and network interface settings. These parameter changes are based on comprehensive usage pattern analysis, enabling more significant call setup time reductions than standard predictive wakeup technology.
Data Source
AI summary
A system and method for push-to-talk (PTT) key one-touch calling is provided. In an embodiment, a client device accesses a discontinuous reception (DRX) mode policy. The DRX mode policy is in accordance with push-to-talk (PTT) usage patterns of at least the client device. The client device selects a DRX cycle time based on the DRX mode policy. The client device applies the DRX cycle time to a cellular network interface of the client device.