Soliciting BSS Interference Reports for Full Duplex Management
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Solution Overview
Problem
Wireless communication systems face challenges in efficiently managing interference between stations (STAs) within a basic service set (BSS), leading to suboptimal network performance and resource allocation, particularly in full duplex mode where simultaneous uplink and downlink transmissions can cause interference.
Innovation Solution
An access point (AP) transmits messages to solicit uplink transmissions from one set of STAs and instructs another set to monitor for interference, receiving interference reports to adjust communication parameters such as modulation and coding schemes, resource unit sizes, and sector configurations based on signal-to-noise ratio (SNR) reports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the AP enables full duplex mode to allow simultaneous uplink and downlink transmissions, then network throughput and resource utilization are improved, but interference between uplink and downlink signals increases
Solution Approach 1:
The patent implements a feedback mechanism where the AP solicits interference reports from STAs during uplink transmissions. These reports provide real-time information about interference levels, which the AP uses to dynamically adjust downlink transmission parameters such as modulation and coding schemes, thereby resolving the contradiction by adapting to actual interference conditions
Solution Approach 2:
The patent dynamically changes communication parameters including modulation order, coding rate, and resource allocation based on interference reports received from STAs. This allows the system to optimize throughput while maintaining acceptable signal quality despite the presence of interference in full duplex mode
2Measurement precision
If the AP solicits interference reports from all STAs continuously, then interference management accuracy is improved, but network overhead and processing complexity increase
Solution Approach 1:
The patent applies partial action by soliciting interference reports only from a selected subset of STAs rather than all STAs continuously. The AP determines which STAs are most likely to provide useful interference information based on their location, transmission activity, and interference patterns, thereby reducing overhead while maintaining sufficient measurement precision
Solution Approach 2:
The patent uses preliminary action by pre-selecting which STAs should provide interference reports based on historical data and current network conditions. This preliminary selection reduces the burden on the network by identifying only those STAs that are likely to contribute meaningful interference information
3Productivity
If the AP adjusts communication parameters frequently based on interference reports, then network performance optimization is improved, but system stability and processing overhead worsen
Solution Approach 1:
The patent implements periodic action by adjusting communication parameters at specific intervals based on received interference reports rather than continuously. The AP accumulates interference information over a period and then makes parameter adjustments, which balances performance optimization with system stability by avoiding excessive frequent changes
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Techniques may include transmitting, from an access point (AP) to a first set of stations (STAs) a first message soliciting an uplink transmission by the first set of STAs over a wireless channel, transmitting to a second set STAs a second message including an instruction to monitor the wireless channel for interference during the uplink transmission by the first set of STAs; transmitting to the second set of STAs a third message triggering an interference report; and receiving an interference report based on the second and third messages. Techniques include identifying a plurality of sectors of a geographic coverage area corresponding to the AP; transmitting a set of directional training signals; receiving a signal to noise ratio (SNR) report from multiple STAs; comparing the received SNR reports on a per sector basis; and adjusting communication based on the comparing.