Multi-Antenna Frequency Restriction for Wireless Coexistence
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Solution Overview
Problem
Interference occurs between transmitted and received signals in electronic devices due to overlapping frequencies, leading to corruption of received data.
Innovation Solution
The electronic device employs multiple antennas and a switch-plexer to dynamically manage transmission and reception based on criticality of data and likelihood of interference, using restricted or unrestricted frequency ranges to minimize signal overlap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the device transmits a signal over a frequency range that overlaps with the received signal's frequency range, then the transmission capability is improved, but the received signal becomes corrupted due to interference
Solution Approach 1:
The system dynamically adjusts the transmission frequency range based on real-time detection of received signals. When a received signal is detected in a particular frequency range, the system dynamically restricts transmission to a smaller subset of frequencies that excludes the received signal's frequency, thereby avoiding interference while maintaining transmission capability.
Solution Approach 2:
The system changes the transmission parameter (frequency range) based on the detected state of the communication environment. By modifying the frequency range parameter from a broader range to a restricted range that excludes received signal frequencies, the system resolves the contradiction between transmission capability and signal integrity.
2Reliability
If the device restricts transmission to a smaller frequency range to avoid interference, then the received signal integrity is improved, but the transmission capability is reduced
Solution Approach 1:
The system applies partial action by transmitting on only a subset of the available frequency range rather than the full range. This partial transmission approach is sufficient to maintain communication while avoiding the harmful frequencies occupied by received signals, thus resolving the contradiction.
Solution Approach 2:
The transmission frequency range is dynamically adjusted based on communication needs and interference conditions. When interference is detected, the system transitions to a restricted frequency range; when no interference is present, it can utilize the full frequency range, optimizing transmission capability while protecting signal integrity.
3Reliability
If the device uses multiple antennas and dynamic frequency management, then interference reduction is achieved, but the device complexity increases
Solution Approach 1:
Multiple antennas are designed with multi-functionality, serving both transmission and reception purposes. The same antenna infrastructure is used for both functions, and the frequency management system universally applies to all antennas, reducing the need for separate dedicated components and mitigating the increase in device complexity.
Solution Approach 2:
The patent merges the transmission and reception functions into a unified system with shared antenna resources and centralized frequency management. By combining these functions and managing them through a single control mechanism, the system achieves interference reduction without proportionally increasing complexity.
Data Source
AI summary
An electronic device that includes several antennas, at least one of which can receive signals communicated using a first type of wireless communication and at least another of which can transmit signals using a second type of wireless communication. The electronic device enables a signal to be transmitted in an unrestricted or restricted manner based on a criticality of data to be included in the signal.