Mobility-Aware Frame Aggregation for Wireless Throughput
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In mobile scenarios, frame aggregation in wireless networks can lead to reduced throughput due to the time-varying nature of the wireless channel, causing increased packet losses as the channel changes rapidly during the transmission of long aggregated frames.
Innovation Solution
A mobility-aware frame aggregation apparatus and method that dynamically adjusts the frame aggregation size based on channel state information (CSI) to determine the channel coherence time, ensuring the aggregation size is compatible with the rate of channel change, thereby minimizing packet losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frame aggregation size is increased to improve throughput, then bandwidth efficiency improves, but packet loss probability increases due to channel changes during transmission
Solution Approach 1:
The patent dynamically adjusts frame aggregation size based on real-time channel conditions. The system monitors channel state information and adapts the aggregation size accordingly - using larger aggregations when channel conditions are stable and smaller aggregations when conditions deteriorate, thereby resolving the contradiction between maximizing throughput and minimizing packet loss
Solution Approach 2:
The patent changes the aggregation size parameter based on channel coherence time measurements. By calculating the channel coherence time and adjusting the aggregation size to match this parameter, the system optimizes the trade-off between bandwidth efficiency and transmission reliability under varying channel conditions
2Loss of energy
If frame aggregation size is increased to reduce overhead, then bandwidth efficiency improves, but channel stability requirements increase
Solution Approach 1:
The system dynamically adapts aggregation size to match channel stability characteristics. When channel coherence time is long (stable conditions), larger aggregations are used to minimize overhead. When coherence time is short (unstable conditions), smaller aggregations are used, automatically adjusting to maintain efficiency while accommodating channel stability variations
Solution Approach 2:
The patent implements feedback mechanisms where channel state information is continuously monitored and used to adjust aggregation size. This closed-loop control ensures that aggregation parameters are optimized based on actual channel stability, reducing overhead when conditions permit while preventing excessive packet loss when stability deteriorates
Data Source
AI summary
According to an example, mobility-aware frame aggregation may include using mobility information related to a transmitter and/or a receiver associated with transmission of data over a wireless channel to determine an aggregation size for frame aggregation of the data to be transmitted over the wireless channel. The mobility information may be based on subcarriers and antennas related to the wireless channel.