| 摘要 |
A first Wi-FiRTM station 206, 208 generates data for transmission. The data comprises status data and/or wake-up data. The first Wi-Fi station then inserts the data into a vendor-specific information element of a probe request frame and wirelessly transmits the probe request frame. The probe request frame is then received by a second Wi-Fi station 204. If the probe request frame contains wake-up data and the second Wi-Fi station is operating in a low power mode when it receives the probe request frame, the second Wi-Fi station will wake-up from the low-power mode. If the probe request frame contains status data then the second Wi-Fi station may process the probe request frame and/or forward at least a portion of the received probe request frame to another device. Wake up data may be generated by Wi-Fi trigger station 206 or via a Wi-Fi bridge station for non-Wi-Fi trigger devices 210. May be used as a low power method for transmitting data from, for example, smoke alarms, sensors etc and/or to instruct a video camera station to begin recording when another station detects an intruder. |
