WLAN Frame Transmission with Cyclic Prefixes for Hybrid Networking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing WLAN standards have different frame structures, making it challenging for new-generation WLAN apparatuses to recognize and receive frames from older standards, which is essential for backward compatibility and hybrid networking.
Innovation Solution
A frame transmission method that generates and receives frames with specific cyclic prefixes and suffixes, allowing for the identification of different WLAN standards, including a user common signal field and a legacy signal field with carefully defined cyclic prefixes and suffixes, enabling the demodulation of data information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple WLAN standards use different frame formats, then each standard can be optimized independently, but WLAN apparatus cannot recognize frames of particular standards without affecting reception of other standards
Solution Approach 1:
The frame is divided into independently processable fields with distinct functions. The L-SIG field contains legacy information that can be processed by any WLAN apparatus, while the HE-SIG field contains new standard information. This segmentation allows apparatus to selectively process only the fields relevant to their capability level, reducing complexity while maintaining independent standard optimization.
Solution Approach 2:
The L-SIG field acts as an intermediary that bridges legacy and new standards. It provides a common reference point that all WLAN apparatus can interpret, while the HE-SIG field carries additional information for new standards. This intermediary structure simplifies frame recognition by providing a universal entry point.
Data Source
AI summary
Embodiments of the present invention disclose a frame transmission method for a wireless local area network and a wireless local area network apparatus, and relate to the field of communications technologies. According to the present invention, in a frame transmission process in a WLAN, a frame sent by a wireless local area network WLAN apparatus is received, and the frame of a particular standard is recognized by detecting a user common signal field included in the frame, so that backward compatibility of a WLAN apparatus is implemented, and hybrid networking of WLAN apparatuses of different standards can be supported, thereby improving flexibility of network deployment, and reducing complexity of networking.