Dual Band WLAN Transceiver Interference Coordination
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Solution Overview
Problem
Current wireless communication systems with multiple transceivers or radios face interference issues when operating simultaneously, leading to deleterious effects such as frequency spikes and communication errors due to the turn-on or operation of high-current components in one transceiver affecting others.
Innovation Solution
Implementing a novel architecture that coordinates the operation of multiple transceivers within a wireless communication device to minimize interference by carefully timing the turn-on of high-current components, such as power amplifiers, during guard intervals or other optimal times, and adjusting operational parameters like loop bandwidth and modulation schemes to mitigate frequency spikes and phase errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transceivers operate simultaneously in a wireless communication device, then communication productivity is improved, but interference between transceivers increases causing frequency spikes and communication errors
Solution Approach 1:
The system performs preliminary actions by identifying guard intervals in the received signal before they occur, and pre-calculating the appropriate timing for turning on power amplifier components. This allows the high-current components to be activated at optimal moments that minimize interference with ongoing communications, rather than reacting after interference occurs.
Solution Approach 2:
The system continuously monitors the communication environment and uses feedback from the received signal to identify guard intervals and determine optimal timing for component activation. The feedback loop enables dynamic adjustment of power amplifier timing based on actual signal conditions, reducing interference while maintaining high productivity.
2Power
If high-current components like power amplifiers are turned on during operation, then transmission power is increased, but frequency spikes and phase errors occur affecting communication reliability
Solution Approach 1:
The system identifies guard intervals in advance and pre-determines the optimal timing for power amplifier activation. By performing this preliminary analysis of the signal structure, the system can turn on high-current components during periods when they will not cause frequency spikes or phase errors that would compromise communication reliability.
Solution Approach 2:
The system dynamically adjusts the timing of power amplifier activation based on the real-time characteristics of the received signal. By making the timing flexible and adaptive rather than fixed, the system can optimize power delivery while avoiding interference with ongoing communications, thus maintaining both power and reliability.
3Adaptability or versatility
If multiple radios are active concurrently to support simultaneous communications, then device versatility is improved, but interference between radios increases
Solution Approach 1:
The system performs preliminary identification of guard intervals and optimal activation timing for each radio before interference occurs. This allows multiple radios to operate concurrently with high versatility while the pre-planned timing coordination ensures that power amplifier activations do not interfere with each other or with ongoing communications.
Solution Approach 2:
The system uses feedback from multiple active radios and their respective communication environments to continuously optimize timing coordination. This feedback mechanism enables the system to maintain versatility by supporting multiple simultaneous communications while dynamically adjusting parameters to minimize interference between the radios.
Data Source
AI summary
Dual band wireless local area network (WLAN) transceiver. A wireless communication device includes at least two different transceivers (or radios) therein to effectuate communications with other wireless communication devices using at least two respective frequency bands. Each of these two transceivers may have different respective circuitry (e.g., each may have a different respective power amplifier (PA) and/or other circuitry components). Coordination is made regarding when certain components of one transceiver turn on and operate when another transceiver may be transmitting or receiving communications. For example, the turn on of a PA and/or other circuitry components (e.g., such as components using or requiring high current) within one transceiver can be coordinated as to minimize deleterious effects regarding the operation of another transceiver. Moreover, latency existent within each of the respective transceiver chains within the wireless communication device (e.g., including baseband and radio portions) is accounted for regarding their respective concurrent operation.