Radar PPDU Indication for Lower Channel Monitoring Power
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Solution Overview
Problem
Communications devices with radar functions waste power consumption when other devices in proximity continue to monitor channels due to unawareness of radar data packet transmission.
Innovation Solution
Incorporating radar indication information into Protocol Data Units (PPDUs) to explicitly indicate radar testing, allowing receiving devices to cease channel monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a communications device sends a radar data packet, then radar testing function is achieved, but other proximate communications devices continue to monitor the channel causing power consumption waste
Solution Approach 1:
The patent applies preliminary action by embedding radar indication information in the PHY header before the actual radar data transmission. This allows receiving devices to identify radar packets in advance and stop channel monitoring before the radar transmission begins, preventing unnecessary power consumption while ensuring the radar testing function proceeds without interference
2Ease of operation
If other communications devices continue to monitor the channel during radar transmission, then channel access readiness is maintained, but power consumption increases unnecessarily
Solution Approach 1:
The patent extracts the channel monitoring function selectively based on packet type. By identifying radar packets through the radar indication information in the PHY header, the system allows receiving devices to discontinue channel monitoring specifically during radar transmissions while maintaining monitoring for other communication packets, thus eliminating unnecessary power consumption without compromising overall channel access capability
Data Source
AI summary
An information indication method and apparatus in the communications field are both provided. The method includes generating a PPDU including radar indication information that is used to indicate that the PPDU is used for radar testing, and then transmitting the PPDU. According to the method, the transmit end explicitly indicates that the PPDU is used for radar testing rather than a PPDU used for communication between communications devices. When a receive end receives the PPDU, the receive end no longer monitors a channel, thereby reducing power consumption of the receive end.