Frequency agility for an ism band home area network
AssigneeGoogle Inc.
InventorYaoyao Gu
Life of this patent
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Abstract
Due to interference that typically occurs in the ISM band, it may be necessary for one or more network devices to switch to an alternative channel. A list of one or more alternate network channels may be generated by a coordinating/gateway device based on the energy level and a distance from a primary network channel. The alternate network channel list may be distributed to neighbor devices and, in the event of interference, link loss, and/or a channel switch notification, the neighbor devices may automatically switch to the first alternate network channel in the list.
Claims30
A computer-implemented method, comprising:
- during formation of a network, determining an energy level for a plurality of network channels;
- selecting one of the plurality of network channels with a low energy level;
- selecting at least one alternate network channel, wherein the at least one alternate network channel is below a threshold energy level and is distal to the selected one of the plurality of network channels;
- and
- communicating the at least one alternate network channel to at least one device on the network.
A computer implemented method, comprising:
- joining a network on which a coordinating device is communicating;
- receiving a list of alternate network channels from the coordinating device, wherein the list comprises at least one alternate network channel;
- determining that a switch to a first alternate network channel is required based on at least one of:
- a detection of interference, a link loss from a first plurality of neighbor devices, or a detection of a channel switch notification;
- and
- switching to the first alternate network channel.
A system, comprising:
- a radio configured to communicate with a network;
- a processor coupled to the radio and configured to:
- during formation of a network, determine an energy level for a plurality of network channels;
- select one of the plurality of network channels with a low energy level;
- select at least one alternate network channel, wherein the at least one alternate network channel is below a threshold energy level and is distal to the selected one of the plurality of network channels;
- and
- communicate the at least one alternate network channel to at least one device on the network.
A system, comprising:
- a radio configured to communicate with a network;
- a processor coupled to the radio and configured to:
- join a network on which a coordinating device is communicating;
- receive a list of alternate network channels from the coordinating device, wherein the list comprises at least one alternate network channel;
- determine a switch to a first alternate network channel is required based on at least one of:
- a detection of interference, a link loss from a first plurality of neighbor devices, or a detection of a channel switch notification;
- and
- switch to the first alternate network channel.
Dependencies are inferred from the claim text.