Mobile Device PDP Context Maintenance via Adaptive Timing
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Solution Overview
Problem
In UMTS networks, frequent re-establishment of PDP contexts by mobile devices leads to network overload and radio resource shortages, especially when many devices are concentrated in a small area, due to existing methods of maintaining packet protocol contexts through periodic packet transmission.
Innovation Solution
A method in a mobile device to determine the timeout duration for packet protocol context deactivation and transmit a packet near this duration to maintain the context, thereby reducing network load by optimizing the frequency and duration of data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile devices periodically transmit packets to maintain PDP context, then the PDP context remains active and available for data transmission, but network load increases and radio resources are consumed unnecessarily
Solution Approach 1:
The patent implements periodic packet transmission at optimized intervals to maintain PDP context activity. The system determines appropriate periodic transmission timing based on inactivity thresholds, sending packets only when necessary to prevent context deactivation while avoiding excessive transmissions that would burden the network.
Solution Approach 2:
The patent dynamically adjusts transmission parameters including packet size, transmission interval, and timing based on network conditions and context state. By changing these parameters adaptively, the system maintains PDP context reliability while minimizing network load and resource consumption.
2Reliability
If mobile devices re-establish PDP context after timeout, then the context is restored for data transmission, but network resources are consumed and overload occurs
Solution Approach 1:
The patent performs preliminary actions to maintain PDP context activity before timeout occurs. By detecting approaching inactivity thresholds and proactively transmitting packets to refresh the context, the system prevents timeout deactivation and subsequent re-establishment procedures, thereby conserving network resources.
Solution Approach 2:
The patent implements feedback mechanisms that monitor PDP context state, transmission timing, and network responses. This feedback enables the system to learn optimal transmission intervals and adjust behavior accordingly, preventing unnecessary context deactivation and re-establishment cycles that would consume network resources.
3Reliability
If inactivity timer is set to large value or removed, then PDP context is preserved for always-on experience, but radio resources remain allocated unnecessarily
Solution Approach 1:
The patent implements dynamic resource allocation where the system adapts radio resource allocation based on actual data transmission needs. Rather than maintaining static long-lived context allocations, the system dynamically adjusts context activity state and resource binding based on observed traffic patterns and inactivity periods.
Solution Approach 2:
The patent enables the mobile device to autonomously manage PDP context maintenance by locally determining transmission timing and executing packet transmissions without continuous network control. This self-service approach allows the device to maintain context availability while releasing radio resources when not in use, eliminating the need for network-configured long timers.
Data Source
AI summary
A system and method for maintaining a packet protocol context, such as a PDP (Packet Data Protocol) context, is provided. A mobile device communicates over a packet protocol context. If there has been no data activity over the packet protocol context for a timeout duration, then the network may deactivate the packet protocol context. The mobile device can re-establish the packet protocol context; however, excessively re-establishing the packet protocol context places a burden on the network. According to an embodiment of the application, the mobile device determines the timeout duration, for example by measuring the timeout duration. Upon data inactivity for a time period near the timeout duration, the mobile device transmits a packet over the packet protocol context so as to maintain the packet protocol context. Accordingly, the load on the network can be reduced by achieving a suitable frequency of short data transmission from the mobile device.