PSI-Based PDU Set Discarding During Mid-Stream Activation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face challenges in efficiently handling increasing traffic loads, particularly in managing packet discarding based on packet importance, which can lead to inefficiencies and congestion.
Innovation Solution
Implementing a PDU Set Importance (PSI)-based discarding mechanism that allows for dynamic activation and deactivation based on network indications and conditional criteria, using different discarding timer values for important and non-important PDU sets to optimize packet handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PSI-based discarding mechanism is applied to all PDU sets, then packet importance differentiation is achieved, but processing complexity increases
Solution Approach 1:
The patent applies different discarding timer values to different PDU sets based on their importance level indicated by PSI. Important PDU sets use a first discarding timer value while non-important PDU sets use a second discarding timer value, enabling localized quality differentiation without system-wide complexity increase
Solution Approach 2:
The patent segments PDU sets into different categories based on PSI indications and applies different processing rules to each segment. This segmentation allows the system to handle important and non-important packets differently, achieving reliability improvement through structured classification
2Productivity
If PSI-based discarding mechanism is activated, then resource allocation efficiency improves, but transition overhead during activation/deactivation increases
Solution Approach 1:
The patent implements dynamic activation and deactivation of the PSI-based discarding mechanism based on network conditions and PDU set characteristics. The mechanism can be flexibly enabled or disabled without requiring full system reconfiguration, reducing transition overhead while maintaining resource allocation efficiency
Solution Approach 2:
The patent changes the discarding timer parameter based on PSI indications and mechanism activation state. By adjusting timer values rather than fundamental processing logic, the system achieves efficient resource allocation with minimal transition overhead during parameter changes
3Manufacturing precision
If different discarding timer values are used for important and non-important PDU sets, then traffic management precision improves, but system complexity increases
Solution Approach 1:
The patent assigns different discarding timer values locally to PDU sets based on their PSI-indicated importance. This local quality differentiation enables precise traffic management for different packet types while avoiding the need for complex system-wide processing changes
Solution Approach 2:
The system uses the PSI information already present in each PDU set to automatically determine the appropriate discarding timer value. This self-service approach allows precise traffic management through inherent packet metadata without requiring external classification complexity
Data Source
AI summary
This disclosure relates to techniques for changing protocol data unit (PDU) set processing behavior upon activation or deactivation of PDU set importance (PSI)-based discarding mechanism, particularly where an indication to activate/deactivate the PSI-based discarding mechanism is received when a PDU set has been partially processed. In some scenarios, the PSI-based discarding mechanism may be applied to the remainder of the PDUs in the partially processed PDU set. In other scenarios, the PSI-based discarding mechanism may not be applied until the next PDU set. In some scenarios, the decision of whether to apply the PSI-based discarding mechanism to the remainder of the PDUs in the partially processed PDU set may be based on additional conditions, e.g., involving the processing progress of the PDU set, the importance of the PDU set, other configuration details of the data radio bearer (DRB), buffer size, etc.