OBSS Communication Apparatus for Spatial Reuse Power Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication technologies in overlapping basic service sets (OBSS) face inefficiencies due to the inability to effectively utilize spatial reuse (SR) without causing interference, particularly with OBSS PD based SR methods that do not consider receiver states.
Innovation Solution
A communication apparatus that estimates propagation loss between devices in an OBSS to determine optimal transmission signal strength for SR, ensuring minimal interference by including transmission signal strength information in radio frames and acknowledgement frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spatial reuse (SR) is permitted in OBSS environments, then wireless media utilization is improved, but interference between overlapping networks increases
Solution Approach 1:
The patent changes the transmission signal strength parameter dynamically based on propagation loss estimation. By adjusting this parameter, the system enables SR to improve wireless media utilization while controlling interference levels to protect ongoing communications in overlapping BSSs.
Solution Approach 2:
The patent implements a feedback mechanism where transmission signal strength information is included in radio frames and acknowledgment frames. This feedback loop allows receiving devices to report reception quality, enabling the transmitting device to adjust future transmission parameters to balance SR benefits with interference control.
2Productivity
If transmission signal strength is increased for SR, then communication efficiency is improved, but reception quality at the destination deteriorates
Solution Approach 1:
The patent dynamically adjusts the transmission signal strength parameter based on estimated propagation loss and feedback about reception quality. This allows the system to optimize communication efficiency while maintaining adequate reception quality by preventing excessive signal strength that would cause interference.
Solution Approach 2:
The patent makes the transmission signal strength dynamic rather than fixed. The signal strength is adjusted in real-time based on propagation conditions and reception feedback, allowing the system to adapt to changing environmental conditions and maintain optimal performance.
3Object-affected harmful factors
If propagation loss estimation is performed for every transmission, then interference control is improved, but processing complexity increases
Solution Approach 1:
The patent performs propagation loss estimation in advance before actual data transmission using control frames or acknowledgment frames. This preliminary estimation allows the system to pre-determine appropriate transmission signal strength, reducing the need for complex real-time calculations during data transmission.
Solution Approach 2:
The patent uses control frames and acknowledgment frames as intermediaries to carry propagation loss information and transmission signal strength data. These intermediary frames facilitate the exchange of necessary information without requiring complex direct processing between transmitting and receiving devices.
Data Source
AI summary
A communication apparatus obtains information on first transmission signal strength of a first radio frame included in the first radio frame transmitted from a first other communication apparatus of an OBSS, and obtains reception signal strength when the first radio frame is detected, specifies propagation loss with the first other communication apparatus from the first transmission signal strength and the reception signal strength, determines a second transmission signal strength to be used in transmission of a third radio frame using spatial reuse (SR) based on the propagation loss specified when a second radio frame transmitted from a second other communication apparatus of the OBSS with the first other communication apparatus as a destination permits SR, and transmits the third radio frame using SR while the second radio frame is being transmitted using the second transmission signal strength.