Adaptive MPDU Aggregation for Multi-Link Retransmission Overlap
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Solution Overview
Problem
Existing wireless communication technologies face inefficiencies in data frame transmission due to overlapping errors and dropped frames, particularly in multi-link operations, leading to suboptimal utilization of multiple communication links.
Innovation Solution
An electronic device adaptively aggregates medium access control protocol data units (MPDUs) based on reception acknowledgment frames, determining overlaps and adjusting aggregation levels to optimize transmission over different links, using a processor and memory to execute instructions for efficient data frame handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data frames are transmitted over multiple links simultaneously, then transmission speed is improved, but overlapping errors and dropped frames occur leading to suboptimal utilization
Solution Approach 1:
The patent implements feedback mechanisms by receiving block acknowledgment frames for each link, examining bitmap information to identify dropped frames, and using this feedback to determine which frames need retransmission and how to aggregate them for optimal retransmission over different links
Solution Approach 2:
The patent dynamically adjusts the aggregation level of data frames based on real-time transmission conditions. The electronic device determines the appropriate aggregation level by examining acknowledgment information from multiple links and adaptively selects aggregation strategies to optimize retransmission efficiency
2Productivity
If data frames are aggregated into A-MPDU, then transmission efficiency is improved, but determining overlapping errors across multiple links becomes complex
Solution Approach 1:
The patent segments the error determination process by handling each link's acknowledgment information independently through bitmap data, then systematically combining results. The block acknowledgment frame structure allows efficient segmentation of reception status information for each link
Solution Approach 2:
The patent uses block acknowledgment frames with bitmap information as intermediaries to manage complexity. These acknowledgment frames serve as mediators that contain structured reception status data, enabling the electronic device to determine overlapping errors across multiple links through systematic examination of the bitmap information
3Reliability
If adaptive aggregation is performed based on reception acknowledgment, then retransmission is optimized, but processing time and computational overhead increase
Solution Approach 1:
The patent performs preliminary actions by pre-establishing aggregation levels and preparing frame aggregation structures before actual retransmission occurs. The electronic device examines acknowledgment information and determines aggregation strategies in advance, reducing processing time during the actual retransmission operation
Data Source
AI summary
An electronic device including at least one processor executing instructions causing the electronic device to: receive a first reception acknowledgment frame over a link for a first set of data frames transmitted over the link; receive a second reception acknowledgment frame over another link for a second set of data frames transmitted over the another link; based on information included in the first reception acknowledgment frame and information included in the second reception acknowledgment frame, determine whether there is an overlap between a first data frame that fails to be transmitted or is dropped from transmission in the first set and a second data frame that fails to be transmitted or is dropped from transmission in the second set; and based on whether there is the overlap, adaptively aggregate the first data frame and the second data frame into a third set of data frames.