| 摘要 |
A method for providing an updated data package to a node in a mesh network comprising a set of nodes and a gateway node arranged to provide access to an update server by means of a second network, the method comprising: the gateway node collecting data package information from each of the set of nodes including a first node, each data package information instance identifying a respective node and its data package version; using the data package information, the gateway node querying the update server by means of the second network so as to cause the update server to respond to the gateway node with an updated data package for at least the first node; the gateway node splitting the update into segments and broadcasting the segments into the mesh network as a sequence of first mesh messages carrying an identifier of the first node; and on receiving a first mesh message: each of a first plurality of nodes of the set, including the first node, scheduling one or more operations to forward the first mesh message to other nodes of the set; and the first node additionally storing the first mesh message so as to, as the sequence of first mesh messages is received, assemble the updated data package. Each mesh message may be broadcast more than once or periodically. Plural nodes requiring the same update may be collated into a group and the mesh messages may contain a group identifier. A node missing a mesh message may request the missing message from another node I the group. |
