Logical Channel Priority Adjustment for Congestion Packet Discarding
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Solution Overview
Problem
Existing wireless communication networks face challenges in efficiently managing logical channel priority adjustments during congestion, leading to excessive packet discarding, particularly when priority adjustments are triggered frequently due to importance-based discarding mechanisms, which can impact performance and resource availability.
Innovation Solution
Implementing semi-static logical channel priority adjustments based on remaining time until discard and importance levels, allowing for proactive management of packet transmission priorities to minimize discarding and optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If importance-based discarding mechanisms are used to manage logical channel priority during congestion, then packet transmission priority can be optimized, but excessive packet discarding occurs due to frequent priority adjustments
Solution Approach 1:
The patent implements dynamic logical channel priority adjustment where the priority of logical channels is not fixed but can be modified based on real-time buffer status and packet importance levels. The network device monitors buffer occupancy and dynamically adjusts priorities to transmit critical packets while avoiding excessive discarding of less important packets during congestion
Solution Approach 2:
The patent changes the parameter of logical channel priority from static to dynamic based on buffer status reports and packet importance indicators. By modifying priority parameters adaptively according to current network conditions and packet characteristics, the system optimizes transmission efficiency while minimizing unnecessary packet discarding
2Adaptability or versatility
If frequent priority adjustments are triggered to manage congestion dynamically, then resource utilization can be optimized, but network performance deteriorates due to excessive adjustments
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple priority levels for logical channels based on packet importance indicators before congestion occurs. When buffer status reports indicate congestion, the system can immediately switch to appropriate pre-defined priority adjustments without triggering frequent dynamic re-evaluations, thus maintaining network performance while achieving adaptive congestion management
3Loss of time
If logical channel priority is adjusted based on remaining time until discard, then critical packets can be transmitted timely, but unnecessary adjustments increase system complexity
Solution Approach 1:
The patent applies local quality by differentiating priority adjustment mechanisms based on packet characteristics and buffer status. Instead of uniformly adjusting all logical channel priorities, the system selectively adjusts priorities only for logical channels containing critical packets that are approaching their discard deadlines, thereby reducing unnecessary adjustments and system complexity while ensuring timely transmission of important data
Data Source
AI summary
The present application relates to devices and components including apparatus, systems, and methods for adjusting a logical channel priority and protocol data unit set discarding.