| 摘要 |
598859 A first device and a method of receiving a broadcast message at the first device for distribution to second devices are disclosed. The first device comprises data storage for storing a broadcast message to be distributed to a second device and transmission hardware. The first device and the second device are part of a frequency hopping mesh network in which nodes of the network communicate based on one or more frequency hopping sequences. The transmission hardware is for distributing the broadcast message to the second device by sending a chirp packet and the broadcast message. The chirp packet is organized and arranged to effect the method of receiving a broadcast message at a first device for distribution to second device, sending the broadcast message and sending a chirp packet, wherein the chirp packet indicates to any second devices receiving the chirp packet that a broadcast message will be sent subsequently. The first device sends the chirp packet on multiple channels used on the frequency hopping mesh network. A system for distributing broadcast messages on various networks comprises a frequency hopping mesh network comprising a plurality of devices configured to communicate using one or more frequency hopping sequences; ii) a first device of the plurality of the above defined devices and iii) a second device of the plurality of devices being configured to receive the chirp message, and, in response to chirp message, listen for the broadcast message on a first channel different from a second channel specified by its frequency hopping sequence. |
