Chirp networks

摘要

In one version, the system uses a mesh of wireless nodes that form a tree shaped network. One of the nodes is a root node that has a connection to an external network, with other network participants being chirp clients, and wireless network clients. The chirp clients are low cost devices that transmit short duration messages that are scheduled using a chirp scheduling technique. At least one wireless node of the tree shaped network is designated as chirp-aware and has a bridge between the short duration messages and IP based devices. The bridge includes a wireless receiver and is connected to the external network. All nodes other than the root node disregard the short duration messages using adaptive filtering. Each node has two logical radios and a service radio, the nodes' uplink and downlink operating on non-conflicting frequencies. Wireless network clients communicate with the nodes using the service radios.

主权项

1. A tree-shaped mesh network comprising:
a mesh of wireless nodes forming a tree shaped network with one root node having a connection to an external network; chirp clients; and wireless network clients; wherein chirp clients comprise low cost chirp devices wherein said low cost chirp devices transmit short duration messages wherein transmission of said short duration messages are scheduled using a chirp scheduling technique; wherein at least one wireless node of the mesh of wireless nodes is a designated chirp-aware node and said chirp-aware node further comprises a bridge between the short duration messages and IP based devices wherein said bridge includes a wireless receiver to receive the short duration messages and is connected to said external network; wherein all remaining wireless nodes of the mesh of wireless nodes disregard the short duration messages as random and transient noise by adaptively filtering out the short duration messages using Automatic Gain Control, Error correction or noise cancellation, wherein the short duration messages are sufficiently short in duration so that said adaptive filtering by all remaining wireless nodes disregards the short duration messages as random and transient noise; wherein each wireless node further comprises two logical radios and a service radio wherein each wireless node uplink and downlink operates on distinct non-conflicting frequencies; and wherein said wireless network clients communicate with said wireless nodes using said service radios.