WLAN Data Transmission via PLCP Header Control Domain
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless local area network (WLAN) data transmission methods based on IEEE 802.11 standards are inefficient due to the need to parse entire physical layer protocol data units (PPDUs) to determine whether information belongs to a station (STA), resulting in unnecessary information processing and reduced transmission efficiency.
Innovation Solution
The proposed solution involves a wireless local area network data transmission method and apparatus where the control domain of a Physical Layer Convergence Protocol (PLCP) header domain in a PPDU carries identifier information of the access point (AP), duration information, and STA identifiers, allowing STAs to determine their relevance by parsing only the control domain, thereby improving transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the receive end STA parses the entire PPDU to determine whether information belongs to the STA, then the STA can accurately identify its own data, but a large amount of unnecessary information is parsed, reducing transmission efficiency
Solution Approach 1:
The PPDU is segmented into distinct domains: a common information domain (PLCP header) that all STAs must parse, and a data domain that contains STA-specific information. STAs only need to fully parse the common information domain to determine whether the subsequent data domain contains their information, rather than parsing the entire PPDU.
Solution Approach 2:
The patent extracts the STA identification information and places it in the common information domain (PLCP header) of the PPDU. This allows STAs to extract and check their identifier against the transmitted data without needing to process the entire data payload, significantly reducing unnecessary parsing operations.
2Reliability
If the STA parses unnecessary information in the PPDU, then the STA can ensure complete information processing, but energy is wasted on processing irrelevant data
Solution Approach 1:
The PPDU structure is segmented into a common information domain and a data domain. STAs are required to reliably parse only the common information domain (PLCP header) which contains essential control information and STA identifiers. Based on this segmented approach, STAs can determine whether to continue parsing the data domain, thereby avoiding energy waste on irrelevant data while maintaining reliable processing of necessary information.
3Loss of information
If the STA parses the entire PPDU to ensure no information is missed, then information completeness is maintained, but transmission time is increased
Solution Approach 1:
The PPDU is divided into a common information domain (PLCP header) and a data domain. STAs must completely and reliably parse the common information domain to obtain control information and determine whether the data domain contains their information. This segmentation ensures that no essential information is lost while avoiding the time penalty of parsing unnecessary data, as STAs can stop parsing after determining their data is not present in the data domain.
Data Source
AI summary
Embodiments of the present invention relate to the field of wireless communication, and in particular, to a wireless local area network data transmission method and apparatus, which are used for improving data transmission efficiency. The method of the embodiments of the present invention includes: carrying, by a control domain of a PLCP header domain in a PPDU constructed by an AP, identifier information of the AP, duration information, and an identifier of at least one STA, so that a STA may obtain the identifier information of the AP, the duration information, and the identifier of at least one STA by parsing only the control domain of the PLCP header domain.