802.11 Trigger Frame Relay Control for WLAN Range Expansion
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Solution Overview
Problem
The procedure for controlling relay transmission of data frames using Trigger frames compliant with the IEEE 802.11 series standard has not been defined, hindering the efficient expansion of communication range and throughput in wireless local area networks.
Innovation Solution
A communication apparatus is designed to transmit Trigger frames that include information for identifying the transmission source, destination, and relay communication apparatus, enabling controlled relay transmission of data frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay transmission is implemented to expand communication range and improve throughput, then network performance is improved, but the control procedure complexity increases because no standardized Trigger frame procedure exists
Solution Approach 1:
The patent applies parameter changes by modifying the Trigger frame structure to include relay-specific parameters such as Relay STA ID, TX STA ID, and RX STA ID fields. These parameter additions enable the Trigger frame to carry necessary relay transmission control information while maintaining compatibility with the existing IEEE 802.11 framework, thus improving throughput without excessively increasing control procedure complexity
Solution Approach 2:
The patent segments the relay transmission control into distinct components within the Trigger frame structure. By separating identification information (TX STA ID, RX STA ID, Relay STA ID) from control commands, the system enables manageable and standardized relay control procedures that reduce overall control complexity while maintaining high throughput
2Length of stationary object
If relay transmission is implemented to expand communication range, then network coverage is improved, but the control procedure complexity increases due to lack of standardized procedures
Solution Approach 1:
The patent introduces the Trigger frame as an intermediary control mechanism that standardizes relay transmission procedures. The Trigger frame acts as a mediator between the access point and relay stations, providing a unified control interface that simplifies the management of extended communication ranges through relay nodes without increasing procedural complexity
Solution Approach 2:
The patent extends the Trigger frame parameter set to include Relay STA ID, TX STA ID, and RX STA ID fields, enabling standardized control of relay transmissions. These parameter additions allow the system to manage expanded communication ranges through relay nodes while maintaining controlled and standardized procedures
Data Source
AI summary
A communication apparatus includes a unit configured to transmit, to an access point complying with an Institute of Electrical and Electronics Engineers (IEEE) 802.11 series standard, a Trigger frame, the Trigger frame including information for identifying a transmission source communication apparatus as a transmission source of a data frame, information for identifying a destination communication apparatus as a destination of the data frame, and information for identifying a relay communication apparatus relaying and transmitting the data frame, and a unit configured to transmit the data frame to the relay communication apparatus in a case where the information for identifying the transmission source communication apparatus in the Trigger frame matches information for identifying the access point.