In-Device Coexistence Policy Signaling With Window Monitoring
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Solution Overview
Problem
Modern wireless client devices integrating multiple communication technologies face challenges in managing radio resource allocation due to lack of filtering and isolated MAC designs, leading to interference and failure to meet strict timing constraints in IEEE standards, particularly in scenarios requiring Wi-Fi communication.
Innovation Solution
Implement proactive and reactive IDC policy management strategies, where an IDC managing device announces policies to connected devices, monitors compliance, and enforces IDC policies to minimize excessive signaling and improve network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radios operate simultaneously in overlapping or adjacent frequency bands, then communication diversity and versatility are improved, but interference and resource contention increase
Solution Approach 1:
The patent implements proactive IDC policy announcement where the access point broadcasts coexistence policies before actual interference occurs. This allows client devices to prepare and adjust their operations in advance, reducing real-time interference conflicts between multiple radios operating in overlapping frequency bands.
Solution Approach 2:
The patent establishes a feedback mechanism where client devices report unavailability windows to the access point, and the access point adjusts its transmission schedules accordingly. This closed-loop feedback system enables dynamic coordination between multiple radios, reducing resource contention and interference while maintaining communication versatility.
2Productivity
If time-sharing approach is used to switch between Wi-Fi for infrastructure connections and Wi-Fi for peer-to-peer connections, then resource allocation is improved, but timing constraints for Wi-Fi communication are not met
Solution Approach 1:
The patent implements dynamic unavailability window reporting where client devices can adjust their reported unavailability periods based on actual operational needs. This dynamic approach allows the system to adapt timing constraints while maintaining effective resource allocation between infrastructure and peer-to-peer Wi-Fi connections.
Solution Approach 2:
The patent modifies the timing parameters by introducing configurable unavailability window durations and frequencies. The access point can adjust these parameters based on network conditions, allowing flexible resource allocation that meets strict timing constraints for Wi-Fi communication while maintaining productivity.
3Reliability
If IDC policy announcement and enforcement mechanisms are implemented, then network performance is improved, but signaling overhead increases
Solution Approach 1:
The patent applies partial action by implementing IDC policy announcement only when necessary, rather than continuously. The access point can selectively broadcast policies based on network conditions and client device needs, reducing unnecessary signaling overhead while maintaining network performance where required.
Solution Approach 2:
The patent implements periodic unavailability window reporting instead of continuous signaling. Client devices report their unavailability windows at scheduled intervals rather than continuously, reducing signaling overhead while maintaining effective IDC policy enforcement and network performance monitoring.
Data Source
AI summary
The present disclosure provides techniques for in-device coexistence (IDC) management. A first network device transmits an IDC policy announcement to a second network device, where the IDC policy announcement is received by a second network device, and the IDC policy announcement comprises one or more IDC policies supported by the first network device. The first network device monitors one or more characteristics of reported unavailability windows to determine whether the second network device violates the one or more IDC policies. In response to detecting a violation of the one or more IDC policies, the first network device transmits an IDC policy enforcement message to the second network device, the IDC policy enforcement message comprising a teardown frame to cancel the one or more IDC policies confirmed by the first network device.