WLAN Radio Frame Resource Block Allocation
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Solution Overview
Problem
Current WLAN networks face inefficiencies in spectrum utilization and network use due to their reliance on a contention-based access mechanism and inability to transmit data in one-to-many or many-to-one relationships, limiting the efficiency of wireless local area network data transmission.
Innovation Solution
The implementation of a method where an access point constructs a radio frame with a preamble part, a control domain, and a data domain that includes multiple radio resource blocks, allowing for orthogonal frequency division multiple access (OFDMA) transmission, enabling data to be sent to multiple stations in a one-to-many or many-to-one manner, improving spectrum utilization and network efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a contention-based access mechanism is used to acquire radio channel rights, then the access method is simple and compatible with existing WLAN standards, but spectrum utilization and network use efficiency deteriorate due to one-to-one data transmission only
Solution Approach 1:
The radio frame is segmented into multiple resource blocks in the frequency domain, allowing different stations to be allocated specific resource blocks. This segmentation enables simultaneous one-to-many and many-to-one data transmissions within a single radio frame, resolving the contradiction between simple access mechanism and low spectrum utilization by maintaining the simplicity of contention-based access while introducing efficient resource allocation within the frame structure.
2Ease of operation
If wireless local area network data is transmitted in a one-to-one relationship between AP and STA, then the transmission method is simple and compatible with existing standards, but network use efficiency deteriorates due to inability to transmit to multiple stations simultaneously
Solution Approach 1:
The patent introduces frequency domain dimensioning by dividing the radio frame into multiple resource blocks. This allows data transmission to occur not only in the time dimension (sequential one-to-one transmissions) but also in the frequency dimension (simultaneous one-to-many transmissions across different resource blocks), thereby improving network use efficiency while maintaining operational simplicity through standardized frame structures.
3Adaptability or versatility
If traditional PPDU frame format is used for data transmission, then compatibility with existing WLAN standards is maintained, but spectrum utilization deteriorates due to lack of multi-station transmission capability
Solution Approach 1:
The patent embeds multiple resource blocks containing station-specific data within a single PPDU frame structure. This nested structure allows traditional PPDU formats to be maintained for compatibility while nesting additional resource allocation information and multi-station data fields within the frame, enabling enhanced spectrum utilization without sacrificing standard compatibility.
Data Source
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AI summary
Embodiments of the present invention provide a method and an apparatus for transmitting wireless local area network data, and relate to the field of communications. The method includes: when a right to use of a radio channel is acquired, constructing, by an access point AP, a radio frame, where the radio frame includes at least a preamble part, a control domain, and a data domain, and the data domain includes at least one downlink data domain; sending, by the AP, the preamble part and the control domain to a station STA associated with the AP; and sending, by the AP, in a downlink data domain of the radio frame, wireless local area network data to the STA associated with the AP. The apparatus includes: a constructing module, a first sending module, and a second sending module. By using the present invention, wireless local area network data can be transmitted between an AP and a STA in a one-to-many relationship or between a STA and an AP in a many-to-one relationship, improving spectrum utilization and network use efficiency.