Multi-Link Wireless Band Control for Fast Licensed Channel Enablement
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Solution Overview
Problem
Existing wireless communication technologies, particularly the EHT (Wi-Fi 7) standard, do not effectively utilize licensed frequency bands like the 3.65 GHz to 3.70 GHz band for multi-link operations due to regulatory requirements and management procedures that can make usage slow and inefficient.
Innovation Solution
A method and system that allows wireless devices to associate with an access point using both license-exempt and licensed frequency bands, enabling efficient multi-link operations by signaling in the license-exempt band to establish and manage wireless links in the licensed band, leveraging the characteristics of both frequency bands for optimal resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dynamic station enablement procedures are used to manage licensed frequency bands, then regulatory requirements are enforced and channel provisioning is automated, but the process becomes slow and inefficient for multi-link operations
Solution Approach 1:
The patent applies preliminary action by performing station enablement and channel provisioning before multi-link operations begin. The access point pre-configures licensed frequency band channels and transmits enablement information to dependent stations, allowing subsequent link establishment to proceed efficiently without repeated regulatory checks during the data transmission phase.
Solution Approach 2:
The patent uses an intermediary approach by introducing a registered access point as a mediator between unlicensed stations and the licensed frequency band. The access point receives enablement requests from dependent stations, verifies regulatory compliance, and grants permission to operate in the licensed band, thereby enabling efficient multi-link operations while maintaining regulatory oversight.
2Reliability
If dependent stations wait for enablement signals from registered stations, then regulatory control is maintained, but transmission permission is lost after configurable duration defaults
Solution Approach 1:
The patent applies continuity of useful action by implementing continuous enablement signaling mechanisms. The registered access point continuously transmits enablement information elements in beacon frames, and dependent stations continuously monitor for these signals. This continuous interaction maintains transmission permission without requiring stations to wait for periodic re-enablement, thereby reducing time loss while preserving regulatory control.
3Productivity
If multi-link operation is implemented in licensed frequency bands, then resource utilization improves, but management procedures become complex and slow
Solution Approach 1:
The patent applies segmentation by dividing the multi-link management function into separate modules: channel provisioning, enablement signaling, and data transmission. The access point segments the management process by handling licensed band channel configuration independently from unlicensed band operations, allowing simplified and parallel processing of multiple links without increasing overall system complexity.
Solution Approach 2:
The patent uses universality by designing the access point to perform multiple functions: it operates as both a registered station managing licensed frequency band access and as an unlicensed station handling multi-link operations. This multi-functional design consolidates management procedures into a single device, reducing system complexity while enabling efficient resource utilization across both licensed and unlicensed bands.
4Ease of operation
If CSMA/CA mechanism is used for fair access in nonexclusively licensed bands, then collision avoidance is achieved, but hidden stations and co-channel interference cannot be sufficiently resolved
Solution Approach 1:
The patent applies feedback by implementing a complaint-based interference resolution mechanism. When interference is detected or complaints are received, the system provides feedback to identify the responsible dependent station and adjust its operation accordingly. This feedback loop enables the system to resolve hidden station and co-channel interference issues while maintaining fair access through CSMA/CA, achieving both ease of operation and reliable interference management.
Data Source
AI summary
A wireless device (11) associates with an access point (10) of the wireless communication system. Based on signaling in an license-exempt frequency band (320). the wireless device (11) controls multiple wireless links (315, 325) between the wireless device (11) and the access point (10). The multiple wireless links (315, 325) comprise at least one wireless link (325) in the license-exempt frequency band (320) and an additional wireless link in a licensed frequency band (315).