Intra-Device LBT Antenna Selection for Efficient Wireless Transmission
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Solution Overview
Problem
Existing listen-before-talk (LBT) operations in electronic devices often result in inefficient communication due to all-or-nothing approaches, where any antenna sensing noise above a threshold prevents transmission, even if other antennas are clear, leading to unnecessary delays and underutilization of communication circuitry.
Innovation Solution
Implementing selective antenna control based on noise levels, where antennas flagged as affected by intra-device operations are ignored, and transmissions are managed independently, allowing communication to proceed if at least one antenna is clear, thereby reducing false positives and improving communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all-or-nothing LBT approach is used where any antenna sensing noise above threshold prevents transmission, then interference avoidance is improved, but communication efficiency deteriorates
Solution Approach 1:
The patent divides the LBT decision into per-antenna independent decisions rather than a single all-or-nothing decision. Each antenna is independently evaluated for noise levels, and transmission permission is granted to specific antennas based on their individual clearances, allowing selective communication across multiple antennas simultaneously.
Solution Approach 2:
The patent applies different LBT criteria to different antennas based on their local noise conditions. Antennas with noise levels below the threshold are permitted to transmit, while antennas with noise levels above the threshold are restricted. This local differentiation optimizes communication efficiency by allowing transmission wherever the channel is clear.
2Reliability
If all-or-nothing LBT approach is used, then interference avoidance is improved, but device complexity increases
Solution Approach 1:
The control logic is segmented into independent modules for each antenna, where each antenna's noise level is independently measured and evaluated. This segmentation simplifies the overall control logic by replacing a complex all-or-nothing decision system with multiple simple independent decisions, one for each antenna.
3Reliability
If all-or-nothing LBT approach is used, then interference avoidance is improved, but loss of time increases
Solution Approach 1:
The transmission decision process is segmented into parallel per-antenna evaluations rather than a sequential all-or-nothing process. Multiple antennas can be evaluated simultaneously, and transmission permission can be granted to multiple antennas in parallel, significantly reducing the time lost to LBT operations.
Solution Approach 2:
Instead of requiring all antennas to be clear before transmission (excessive action), the patent allows transmission to proceed if at least one antenna is clear (partial action). This partial approach reduces unnecessary delays by permitting transmission when sufficient antennas are available and clear, without requiring perfect clearance across all antennas.
Data Source
AI summary
The present disclosure relates to systems and methods for operating a control signal to communicate signals using a first antenna and a first frequency band in response to determining that intra-device operations are occurring or are expected to occur, that a first amount of energy received by the first antenna is less than a threshold amount of energy, and that the first antenna is unaffected by the intra-device operations. The control signal may also delay communication of the signals in response to determining that intra-device operations are occurring, and that first amount of energy is greater than or equal to the threshold amount of energy.