VHT PPDU Frame Identification Using Partial AID and BSS Color
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless LAN systems face challenges in providing high-efficiency and high-performance communication in high-density environments, with ambiguity in intra/inter-BSS frame determination using partial AID information of VHT PPDU.
Innovation Solution
A wireless communication method and terminal that assign and determine association IDs (AIDs) based on a value obtained by subtracting an N-bit value from a BSSID using partial BSS color values, allowing efficient intra/inter-BSS frame determination through partial AID information in VHT PPDU.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If partial AID information is used for intra/inter-BSS frame determination, then device complexity is reduced, but measurement precision deteriorates due to ambiguity in determination
Solution Approach 1:
The AID field is segmented into two parts: a first field containing a predetermined number of bits (e.g., 6 bits) used for intra/inter-BSS frame determination, and a second field containing the remaining bits used for station identification. This segmentation allows the determination function to use only the necessary bits for BSS identification, reducing complexity while maintaining precision by dedicating specific bits to specific functions.
2Measurement precision
If additional calculations are performed for intra/inter-BSS frame determination, then measurement precision is improved, but productivity deteriorates due to increased processing time
Solution Approach 1:
The system performs preliminary action by pre-configuring the first field of the AID with a predetermined number of bits that directly encode BSS identification information. This allows receiving devices to determine intra/inter-BSS frames by simply reading the first field without performing additional calculations, thereby maintaining high precision while improving processing speed.
3Measurement precision
If full AID information is used for frame determination, then measurement precision is improved, but loss of information increases due to redundant data transmission
Solution Approach 1:
The invention extracts only the essential information needed for intra/inter-BSS frame determination by using a predetermined number of bits from the AID field (the first field) for this purpose. The remaining bits (second field) are used for station identification. This extraction eliminates redundant information transmission while maintaining determination precision, as only the necessary BSS identification bits are utilized for the determination function.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a wireless communication method and a wireless communication terminal using a determination of basic service set identification information of a received frame, and more particularly, to a wireless communication method and a wireless communication terminal for performing an operation according to a determination result whether the received frame is an intra-BSS frame or an inter-BSS frame. To this end, provided are a wireless communication terminal including a processor and a communication unit, wherein the processor receives a wireless frame through the communication unit, when the received frame is a VHT PPDU, extracts partial association ID (AID) information and group ID information from a preamble of the VHT PPDU, when the extracted group ID information is equal to a predetermined value, checks whether at least some information of the extracted partial AID matches a partial basic service set (BSS) color announced to the terminal, and determines whether the received frame is an intra-BSS frame or an inter-BSS frame according to whether at least some information of the partial AID matches the partial BSS color and a wireless communication method using the same.