Receiver-Based Contention for Millimeter Wave Interference
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Solution Overview
Problem
Conventional contention procedures for wireless communication networks, especially in millimeter wave frequencies, are inefficient due to their reliance on transmitter-side based sensing, which fails to accurately reflect interference levels and does not account for the directional nature of high-frequency signals, leading to reduced throughput and increased network overhead.
Innovation Solution
Implementing receiver-based contention procedures that utilize receiver-side reference signals to estimate interference, allowing devices to determine the best beams for transmission and enabling concurrent transmissions, thereby reducing network overhead and improving power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transmitter-side based sensing is used for medium contention, then the contention procedure can be implemented, but the interference level estimation is inaccurate and does not reflect actual reception conditions
Solution Approach 1:
The patent inverts the traditional transmitter-side sensing approach by implementing receiver-side interference estimation. Instead of the transmitter estimating interference and making transmission decisions, the receiver measures actual interference levels and provides feedback to the transmitter. This inversion enables accurate interference assessment based on actual reception conditions while maintaining manageable procedural complexity through automated feedback mechanisms.
2Productivity
If conventional contention procedures are used in millimeter wave frequencies, then communication can be established, but throughput is reduced due to inaccurate interference reflection
Solution Approach 1:
The patent implements a feedback mechanism where the receiver measures interference levels on received signals and communicates this information back to the transmitter. This feedback loop enables the transmitter to make informed transmission decisions based on actual reception conditions, thereby improving throughput by avoiding transmissions during high interference periods and utilizing accurate interference reflection for resource allocation.
3Use of energy by moving object
If transmitter-side sensing is used, then the system can operate, but power efficiency is reduced due to inability to enable concurrent transmissions
Solution Approach 1:
The patent enables the receiver to autonomously perform interference measurement and assessment without requiring complex coordinated sensing procedures between transmitters. Each receiver independently evaluates the interference environment and provides feedback, allowing the system to operate efficiently with reduced power consumption. This self-service approach at the receiver side eliminates the need for energy-intensive transmitter sensing while maintaining manageable system complexity.
4Adaptability or versatility
If directional beams are used in high-frequency communication, then communication capability is improved, but interference management becomes more difficult due to beam-specific interference patterns
Solution Approach 1:
The patent applies local quality by performing interference estimation specifically for each beam direction at the receiver side. Instead of assuming uniform interference across all directions, the system measures and evaluates interference levels individually for each received beam, enabling precise interference management tailored to specific spatial directions. This approach handles beam-specific interference patterns effectively while maintaining adaptability of directional communication.
Data Source
AI summary
This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for frame based operation and medium contention procedures in wireless networks. In some aspects, devices of a wireless network may perform receiver side contention operations. To illustrate, reference signals from a receiving device may be transmitted to a transmitting device and used by the transmitting device to estimate interference for transmitter side transmissions. Such receiver side reference signals may more accurately reflect the interference profile that transmissions sent by the transmitting device will face, such as when operating in a spectrum shared with many devices. The transmitting device may utilize the beam(s) that satisfy interference criteria when receiving the reference signals to transmit data. Receiver side frame based operation may provide a more stable interference profile which enables better rate prediction, and the better rate prediction may increase reliability and overall network and medium throughput.