EDMG Link Measurement Frames for mmWave TDD Rate Adaptation
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Solution Overview
Problem
Wireless networks operating in millimeter wave frequencies face challenges such as increased bandwidth demand and capacity issues, particularly in scenarios with a high number of devices, where existing base stations struggle to meet service demands.
Innovation Solution
The implementation of enhanced directional multi-gigabit (EDMG) communication techniques, including the use of EDMG stations and access points that support advanced communication protocols like IEEE 802.11ay, and the integration of specific circuitry for efficient radio architecture, enabling improved performance, capacity, and coverage through advanced modulation techniques and resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If base stations operate in millimeter wave frequencies to meet increased bandwidth demand, then network capacity and throughput are improved, but network complexity and difficulty of detecting and measuring signals increase
Solution Approach 1:
The patent introduces beamforming as an intermediary technique that focuses millimeter wave signals into directed beams, making them detectable and measurable despite the inherent difficulties of mmWave propagation. The base station uses beamforming to create concentrated signal paths that can be reliably detected by devices.
Solution Approach 2:
The patent employs beam refinement procedures that dynamically adjust beam parameters (direction, width, intensity) based on feedback from devices. This parameter optimization enables effective signal detection and measurement in millimeter wave frequencies by adapting to changing channel conditions.
2Area of stationary object
If the number of devices demanding service increases, then network coverage area is improved, but base station capacity becomes insufficient
Solution Approach 1:
The patent implements beamforming that segments the network coverage area into multiple directional beams, allowing the base station to serve multiple devices simultaneously in different spatial directions. This segmentation enables the base station to maintain capacity while expanding effective coverage to more devices.
Solution Approach 2:
The patent introduces spatial dimensionality through beamforming, transforming the network from a single-channel communication model to a multi-dimensional spatial multiplexing model. This allows the base station to serve multiple devices in the same frequency band by utilizing different spatial dimensions.
3Productivity
If advanced communication protocols like IEEE 802.11ay are implemented, then network performance and throughput are improved, but device complexity increases
Solution Approach 1:
The patent implements automated beam management and channel selection procedures where devices autonomously perform measurements and report back to the base station. This self-service approach enables advanced 802.11ay functionality while reducing the operational complexity for users and simplifying deployment.
Data Source
AI summary
Embodiments of an enhanced directional multi-gigabit (EDMG) station (STA), access point (AP), and method of communication are generally described herein. The EDMG STA may receive, from the AP, a Link Measurement Request Frame that includes a request for information for time division duplexing (TDD) rate adaptation. The EDMG STA may transmit a Link Measurement Response Frame that includes a Directional Multi Gigabit (DMG) Link Margin element that includes a Rate Adaptation Control parameter. The DMG Link Margin element may be configurable to include one or more optional fields for the TDD rate adaptation and transmit power control. The Rate Adaptation Control parameter may indicate: a number of space time streams (STSs) for which information is included in the DMG Link Margin element; and whether the DMG Link Margin element includes the one or more optional fields.