Short Control Frames in Wireless Communications
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Solution Overview
Problem
Wireless communication systems face significant network and processing overhead due to the size and complexity of control frames, particularly in wireless local area networks (WLANs), which can lead to increased latency and reduced throughput.
Innovation Solution
The implementation of short control frames, such as null data packet (NDP) frames and NDP acknowledgement frames, which omit unnecessary information and are encoded within the physical layer preamble, reducing the size and processing requirements of control frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional control frames are used in wireless communications, then control information can be transmitted, but network overhead and processing latency increase
Solution Approach 1:
The patent extracts and removes unnecessary fields from traditional control frames, keeping only the essential control information. This extraction principle directly reduces frame size and processing requirements while maintaining the core functionality of control information transmission, thereby reducing processing latency without compromising reliability
Solution Approach 2:
The patent changes the parameter of control frame size by defining a shortened format with reduced number of bits. This parameter change transforms the traditional full-sized control frame into a compact version that requires less processing time and reduces network overhead, directly addressing the latency issue while preserving essential control functions
2Reliability
If traditional control frames are used in wireless communications, then control information can be transmitted, but network overhead increases
Solution Approach 1:
The patent applies extraction by removing redundant and unnecessary fields from the control frame structure. By taking out only the essential control information and eliminating extraneous data, the frame size is significantly reduced, thereby decreasing network overhead while maintaining reliable control information transmission
Solution Approach 2:
The patent changes the quantity parameter of control frames by defining a shortened format with fewer bits. This parameter change directly reduces the amount of data transmitted over the network, decreasing network overhead while preserving the essential control information needed for reliable communication
3Reliability
If traditional control frames are used in wireless communications, then complete control information is transmitted, but processing complexity increases
Solution Approach 1:
The patent extracts only the essential control information needed for reliable communication, removing unnecessary fields that contribute to processing complexity. This selective extraction maintains the completeness of critical control data while significantly reducing the computational burden on receiving devices
Solution Approach 2:
The patent changes the complexity parameter by reducing the control frame to a shortened format with fewer bits and fields. This parameter change directly reduces processing complexity while maintaining the essential control information completeness needed for reliable wireless communication
Data Source
AI summary
Systems, methods, and devices for communicating short control frames are described herein. In some aspects, a method of wireless communication includes generating a control frame comprising a contention free end (CF-end) frame, the CF-end frame comprising a physical layer preamble having a type field, the type field including an indicator indicating the CF-end frame is a null data packet (NDP). The method further includes transmitting the control frame.