PSM Retry Protocol for Wireless Network Parameter Deadlocks
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Solution Overview
Problem
Current techniques for negotiating power saving mode (PSM) parameters between user equipment (UE) and core network devices lead to unnecessary network load due to continuous deadlocks where UE continuously requests preferred parameters, and the network responds with different parameters, causing exponential strain as the number of devices grows.
Innovation Solution
Implementing a PSM retry protocol that guides the UE to honor network-provided PSM parameters after a maximum number of negotiation attempts, reducing the need for the network to re-evaluate UE requests and lowering processing and power consumption by allowing the UE to use previously authorized network parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the UE continuously requests preferred PSM parameters and the network responds with different parameters, then the UE can potentially optimize its power consumption, but the network load increases exponentially due to continuous deadlocks and re-evaluations
Solution Approach 1:
The network pre-authorizes a set of acceptable PSM parameters for the UE before the continuous negotiation deadlock occurs. This preliminary authorization establishes a baseline that prevents endless back-and-forth negotiations, as the UE can directly use these pre-approved parameters without requiring continuous network re-evaluation
Solution Approach 2:
The patent implements a feedback mechanism where the network monitors the negotiation process and detects when a deadlock situation occurs (maximum number of attempts reached). Based on this feedback, the network intervenes by providing pre-authorized parameters, thereby breaking the deadlock cycle and reducing further negotiation overhead
2Adaptability or versatility
If the network re-evaluates UE PSM requests continuously to ensure optimal parameters, then the parameter optimization improves, but the processing time and complexity increase
Solution Approach 1:
The network performs the complex re-evaluation and optimization process in advance, generating a set of pre-authorized PSM parameters before the UE needs them. This preliminary optimization eliminates the need for continuous real-time re-evaluation during operation, significantly reducing processing time during actual PSM negotiations
Solution Approach 2:
Instead of performing full re-evaluation for every PSM parameter request, the patent applies partial optimization by pre-calculating a set of acceptable parameters that cover various scenarios. This excessive preliminary action ensures that the pre-authorized parameters will be sufficient for multiple future requests without requiring complete re-evaluation each time
Data Source
AI summary
The disclosed subject matter provides techniques for managing negotiation of power saving mode (PSM) parameters between a user equipment (UE) and core network device of a wireless communication network. In this regard, a method is provided that includes facilitating establishing, by a device comprising a processor, a wireless communication link with a network device of a wireless network. The method can further include, based on a determination that a power saving mode retry protocol for the device is enabled, determining, by the device, a number of times the network device previously instructed the device to use network values for power saving mode timers instead of device values for the power saving mode timers in association with the device operating in a power saving mode.