Wireless Station Detection Power Management via Periodic Search Modes
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Solution Overview
Problem
Wireless communication stations consume excessive battery power while detecting other stations, as they typically remain active for extended periods, leading to reduced battery life and increased power consumption.
Innovation Solution
Implementing a power-efficient detection scheme that allows stations to operate in either a passive mode or a search mode, where they alternate between transmit and receive periods, significantly reducing power usage by turning on receivers and transmitters only for specific intervals, thereby minimizing battery drain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a station operates continuously in receive mode to detect other stations, then detection reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic transmission of detection signals at predetermined intervals instead of continuous transmission. The mobile station transmits detection signals periodically and switches to sleep mode between transmissions, achieving both reliable detection and power savings. This directly applies periodic action to resolve the contradiction between continuous detection reliability and power consumption.
Solution Approach 2:
The patent dynamically switches between operational modes (transmission mode, reception mode, and sleep mode) based on detection needs. The system adjusts its operational state from active transmission to passive reception to complete sleep, creating a dynamic power management strategy that maintains detection capability while minimizing power consumption throughout the device lifecycle.
2Use of energy by moving object
If a station alternates between transmit and receive modes to save power, then power consumption is reduced, but detection time increases
Solution Approach 1:
The patent performs preliminary actions by transmitting detection signals proactively at predetermined intervals before needing to establish communication. The mobile station sends detection signals in advance during active periods, so that when it switches to sleep mode, the detection work is already done, eliminating the need for extended detection periods later.
Solution Approach 2:
The patent implements feedback mechanisms where the mobile station adjusts its detection and transmission behavior based on received signals from other stations. When detection signals are received, the system feedback-induces mode switching to establish communication, creating an adaptive loop that optimizes both detection time and power consumption based on actual network conditions.
Data Source
AI summary
Techniques for detecting other stations in a power efficient manner are described. A station may operate in a passive mode or a search mode. In the passive mode, the station receives for one receive period in each time interval. In the search mode, the station transmits for a series of transmit periods in one time interval, then receives for one receive period in the next time interval, and repeats the transmit/receive cycle. In an example scenario, station A operates in the search mode and sends a series of transmissions during its transmit periods. Station B operates in the passive mode, receives a transmission from station A during its receive period, switches to the search mode, and sends a series of transmissions for one time interval. Station A receives a transmission from station B during its receive period. After detecting one another, stations A and B may perform synchronization.