Patent ID: 9673858
Date: 2017-06-06
CPC Classifications: H04B,H04W

Claim:
1. A method, comprising: receiving, at a particular device in a computer network, a notice that a neighbor device has an impending de-synchronization of one or more of its broadcast and unicast frequency-hopping schedules with an expected time for the impending de-synchronization; awaiting, by the particular device, expiration of the expected time; in response to expiration of the expected time, asynchronously unicasting, by the particular device, a message with resynchronization information for the one or more broadcast and unicast schedules to the neighbor device, wherein asynchronously unicasting the message involves transmitting the message across all available channels to the neighbor device; receiving a solicitation from the neighbor device for an existing broadcast schedule stored on the particular device via an asynchronous broadcast sent from the neighbor device on a subset of all available frequencies wherein the subset is determined by the neighbor device based on neighbor density; number of available frequencies; or a reliability threshold, or via an asynchronous unicast sent from the neighbor device on all available frequencies to one or more known neighbor devices of the neighbor device; and in response to receiving the solicitation, transmitting from the particular device the existing broadcast to the neighbor device.