Central Controller for 60 GHz Wireless Spatial Reuse
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Solution Overview
Problem
Current wireless LAN architectures fail to effectively utilize the 60 GHz band due to susceptibility to physical blockage and high attenuation, limiting range and capacity, and do not leverage spatial reuse opportunities, leading to inefficiencies in millimeter wavelength band usage.
Innovation Solution
A system with a central controller manages access points distributed along walls or ceilings, calculating access point locations and blocking object positions based on beam shapes and client device profiles to allocate client-to-AP associations, optimizing spatial reuse and reducing handoffs, thereby increasing capacity and privacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the 60 GHz band is used to increase wireless throughput, then data transfer rates are improved, but the system becomes susceptible to physical blockage and high attenuation
Solution Approach 1:
The patent transitions from traditional two-dimensional wireless signal propagation to three-dimensional beamforming, where access points transmit focused electromagnetic beams in specific spatial directions. This dimensional change enables precise targeting of client devices while avoiding physical obstacles, resolving the contradiction between high data rates and signal stability at 60 GHz.
Solution Approach 2:
The system implements directional beamforming where each access point transmits concentrated wireless signals along specific paths toward intended client devices. This localizes the signal energy along optimal propagation paths, avoiding areas with physical blockages, thereby maintaining both high throughput and reliability simultaneously.
2Productivity
If access points are distributed along walls or ceilings to optimize coverage, then spatial reuse is improved, but the system complexity increases
Solution Approach 1:
A centralized controller is introduced as an intermediary that manages multiple access points distributed along walls or ceilings. The controller coordinates beamforming operations, client associations, and spatial reuse strategies across all access points, simplifying the management complexity while enabling optimized spatial reuse through centralized intelligence.
Solution Approach 2:
The system pre-calculates optimal client-to-access point associations and beamforming configurations before actual data transmission begins. This preliminary setup phase allows the distributed access point network to operate efficiently with minimal real-time coordination overhead, reducing ongoing management complexity.
3Productivity
If beamforming is used to increase capacity, then throughput is improved, but the system requires precise location calculation and blocking object detection
Solution Approach 1:
The system implements feedback mechanisms where access points monitor signal quality and client device responses to detect the presence of blocking objects. This feedback enables dynamic adjustment of beamforming directions and client associations, maintaining high capacity while adapting to changing environmental conditions without requiring complex external sensing systems.
Data Source
AI summary
An example method for managing a wireless network can include receiving, via a processor, an access point (AP) beam shape and an AP transmit direction corresponding to each of a plurality of access points (APs). The example method can also include receiving, via a processor, a client device beam shape profile from at least one of the plurality of access points. The example method can also further include calculating, via the processor, a location of a blocking object based on the AP beam shape, the AP transmit direction, and the client device beam shape profile from the plurality of access points. The example method can further include allocating, via the processor, client-to-AP associations based at least in part on the location of the blocking object.