Multi-AP Power Coordination Frames for Interference Control
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Solution Overview
Problem
In multi-AP communication systems, radio interference can reduce communication speed due to inappropriate transmission powers set by individual APs or STAs.
Innovation Solution
A communication device that transmits frames to access points, including information for identifying the access point and specifying transmission power, enabling coordinated power settings among multiple APs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If each AP or STA sets transmission power independently, then each device can operate autonomously, but radio interference increases and communication speed decreases
Solution Approach 1:
The patent introduces a frame transmission mechanism as an intermediary between APs and STAs to coordinate transmission power. The frame carries power control information from the transmitting device to the receiving device, enabling centralized or coordinated power management while maintaining operational autonomy. This mediator resolves the contradiction by allowing devices to operate autonomously based on received power instructions rather than independent decision-making.
Solution Approach 2:
The patent implements a feedback loop where transmission power information is exchanged between devices through structured frames. The receiving device sends back power control feedback to the transmitting device, enabling dynamic adjustment of transmission power based on actual communication conditions. This feedback mechanism allows the system to optimize communication speed while reducing interference through coordinated power levels.
2Productivity
If multiple APs transmit data simultaneously to STAs, then throughput increases due to cooperative transmission, but transmission power coordination becomes complex
Solution Approach 1:
The patent merges power control functionality into a unified frame structure that can be transmitted between multiple APs and STAs. Instead of implementing separate complex coordination protocols for each AP pair, the invention combines power control information transmission with data communication frames, simplifying the overall system while enabling multi-AP cooperative transmission with coordinated power levels.
Solution Approach 2:
The patent creates a universal frame structure that serves multiple functions: data transmission, power control, and coordination signaling. This multi-functional frame can be used in single-AP and multi-AP scenarios alike, reducing the need for specialized complex protocols and enabling scalable power coordination across different network configurations.
Data Source
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AI summary
A communication device that performs wireless communication that complies with IEEE 802.11 series of standards includes a communication means that cooperates with an access point to perform data communication with a station, and the communication means transmits, to the access point, a frame instructing the access point to communicate with the station, the frame including information for identifying the access point and information regarding transmission power.