Wireless Packet Scheduling Efficiency Optimization
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in packet scheduling, leading to increased overhead and control signaling due to the focus on delivering real-time packets, which results in suboptimal allocation of time frequency frames and packet segmentation.
Innovation Solution
The method involves monitoring the efficiency of time frequency frame allocations and rearranging transmission orders when efficiency falls below a threshold, optimizing the scheduling to reduce overhead and control signaling by prioritizing non-real time packets and adjusting physical resource block allocations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the scheduler prioritizes delivery of time sensitive packets, then real-time application performance is improved, but overhead and control signaling increase
Solution Approach 1:
The patent implements dynamic scheduling that adapts packet prioritization based on buffer status and traffic conditions. The network node monitors buffer occupancy and dynamically adjusts the priority of time-sensitive versus non-time-sensitive packets, transitioning between different scheduling strategies based on real-time conditions rather than using a fixed prioritization scheme.
Solution Approach 2:
The system changes scheduling parameters (priority weights, allocation ratios) based on buffer status indicators. When buffers are congested, the scheduler adjusts parameters to favor time-sensitive packets; when buffers are clear, it reduces overhead by using simpler scheduling parameters for non-time-sensitive traffic.
2Reliability
If time frequency frames are allocated to prioritize real-time packets, then packet delivery reliability is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent employs dynamic time frequency frame allocation where the network node continuously monitors buffer status and adjusts the proportion of resources allocated to time-sensitive versus non-time-sensitive packets. This dynamic adjustment ensures high delivery reliability for urgent packets while efficiently utilizing remaining resources for other traffic types, preventing resource waste.
Solution Approach 2:
Different quality of service levels are applied to different packet types based on their specific requirements. Time-sensitive packets receive higher priority allocation with stricter timing guarantees, while non-time-sensitive packets receive standard allocation. This localized quality differentiation improves overall resource efficiency by matching resource quality to actual packet needs.
3Adaptability or versatility
If packets are segmented across multiple time frequency frames, then transmission flexibility is improved, but system performance deteriorates
Solution Approach 1:
The patent applies segmentation selectively based on packet characteristics and buffer status. Large packets are segmented across multiple time frequency frames when necessary to maintain transmission flexibility and adapt to varying channel conditions. However, the system minimizes segmentation for time-sensitive packets to avoid performance degradation from reassembly delays and overhead.
Solution Approach 2:
The segmentation parameters (packet size, frame allocation) are dynamically adjusted based on traffic type and buffer conditions. For non-time-sensitive traffic, aggressive segmentation is used to improve flexibility. For time-sensitive traffic, larger unsegmented packets are transmitted when possible to maintain performance.
Data Source
AI summary
In systems and methods of determining a transmission order of packets in a wireless communication network, one method includes determining an efficiency of time frequency frame allocations performed by a network node over a predetermined period of time. The method also includes determining when the efficiency of the time frequency frame allocations is below a threshold. The method further includes rearranging two or more time frequency frames in one or more time transmission intervals when the efficiency of the time frequency frame allocations is determined to be below the threshold.