Frequency Interlace Transmission for Low-Latency Small Packets
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in transmitting small data packets over large bandwidths, particularly in high-frequency bands like the 60GHz band, due to impracticality of frequency multiplexing and the need for channel sensing, which introduces latency and unreliability.
Innovation Solution
The use of frequency interlaces, which are distributed frequency resource portions within a system bandwidth, allows for efficient transmission of small data packets without channel sensing, by allocating different frequency interlaces to different network nodes, thereby improving channel access isolation and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency multiplexing is used for transmitting small data packets over large bandwidths, then bandwidth utilization is improved, but channel sensing is required which introduces latency and unreliability
Solution Approach 1:
The patent segments the frequency bandwidth into multiple frequency interlaces, where each interlace consists of distributed frequency resource portions. This segmentation allows small data packets to be transmitted efficiently without requiring channel sensing, as each interlace can be allocated independently to different network nodes, thereby reducing latency while maintaining bandwidth utilization efficiency.
2Reliability
If channel sensing is performed for frequency multiplexing, then channel access is controlled, but transmission reliability decreases due to sensing failures and latency
Solution Approach 1:
The patent extracts and eliminates the channel sensing requirement from the frequency multiplexing process by using frequency interlaces with distributed frequency resource portions. Different network nodes are allocated different frequency interlaces, which provides channel access isolation without the need for sensing, thereby improving transmission reliability by removing the unreliable sensing step entirely.
3Productivity
If distributed transmission is used for small packet traffic, then transmission efficiency is improved, but frequency resource allocation becomes more complex
Solution Approach 1:
The patent introduces dynamic frequency interlace allocation where different frequency interlaces can be dynamically assigned to different network nodes based on traffic conditions. This dynamic allocation mechanism enables efficient distributed transmission for small packets while managing allocation complexity through flexible, condition-based assignment rules rather than static complex scheduling.
Data Source
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AI summary
According to an example embodiment, an example method may include determining, by a network node in a wireless network, whether a size of a data packet is greater than a threshold size; transmitting, by the network node, the data packet via a frequency interlace if the size of the data packet is less than or equal to the threshold size; transmitting, by the network node, the data packet via contiguous wideband frequency resources if the size of the data packet is greater than the threshold size.