Time Domain Multiplexing for In-Device Coexistence
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Solution Overview
Problem
In heterogeneous wireless communication systems, multi-radio platforms equipped with multiple radio transceivers experience interference due to simultaneous use of different wireless technologies, leading to impaired performance and potential inability to operate effectively.
Innovation Solution
Implementing a time domain multiplexing scheme, specifically through enhanced discontinuous reception (DRX) cycles with adjustable time units and hybrid DRX cycles, to coordinate the operation of multiple radio technologies and prevent signal interference, allowing for in-device coexistence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radio transceivers operate simultaneously in a multi-radio platform, then computing and communication capability is enhanced, but signal interference and performance degradation occur
Solution Approach 1:
The patent implements periodic action by using Discontinuous Reception (DRX) cycles that periodically switch between active and sleep states. The system configures specific DRX cycle lengths and offset values to create periodic time windows where different radio technologies operate sequentially rather than simultaneously, thereby reducing signal interference while maintaining periodic communication capability across multiple networks
Solution Approach 2:
The patent applies segmentation by dividing the operation time of multiple radio transceivers into distinct segments through time domain multiplexing. Each radio technology (e.g., WWAN, WLAN, WPAN) is allocated specific time slots within DRX cycles, creating segmented operation periods that prevent simultaneous transmission and reception conflicts, thus eliminating signal interference while preserving overall system versatility
2Productivity
If different wireless technologies are used concurrently, then mobility and communication capability are improved, but interference and collisions occur resulting in impaired performance
Solution Approach 1:
The patent implements dynamics by making the DRX cycle parameters adjustable and adaptive. The system can dynamically configure different DRX cycle lengths, offset values, and active time durations based on network conditions, traffic patterns, and interference levels. This dynamic adjustment allows the system to optimize communication capability while maintaining reliability by adapting to changing operational requirements
Solution Approach 2:
The patent applies feedback mechanisms through the configuration and monitoring of DRX cycle performance. The system monitors communication quality, interference levels, and network conditions, then adjusts DRX parameters accordingly to maintain optimal performance. This feedback loop ensures that communication capability is maximized while reliability is preserved through continuous optimization based on actual system performance
3Object-affected harmful factors
If time domain multiplexing is implemented to coordinate radio operations, then signal interference is avoided, but system complexity increases
Solution Approach 1:
The patent applies universality by implementing a unified DRX cycle management mechanism that controls multiple different radio technologies (WWAN, WLAN, WPAN, etc.) through a single coordinated framework. Rather than implementing separate interference management systems for each radio type, the system uses a universal DRX approach that can be applied across all radio interfaces, reducing overall system complexity while effectively avoiding signal interference through standardized time domain multiplexing
Data Source
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AI summary
Embodiments of systems and methods for time domain multiplexing solutions for in-device coexistence are generally described herein. Other embodiments may be described and claimed.