| 摘要 |
Transmission of ZigBee nodes is autonomously sensed through a preamble-based signal-sensing method to protect a ZigBee network from a WiFi network without having to modify a protocol of a ZigBee network, and whether there is transmission of ZigBee nodes is notified to WiFi nodes. A method for supporting coexistence of ZigBee and WiFi networks, and signaler therefor includes: a step for continuously searching a channel transmitted by ZigBee nodes; a step for determining there is a random ZigBee node transmitting when a SHR field of a random ZigBee node composed of preamble, SFD, and packet length information is found in the searching step; a step for changing the channel to an adjacent channel; and a step for transmitting a busy tone during the period capable of protecting an ACK frame and data of the random ZigBee node. |
