Patent ID: 8370465

Claim:
A communication network, comprising: a first level node group; and a second level node group; wherein: the first level node group comprises a first node and a second node; the second level node group comprises a third node; the first node and the second node comprises route information of the first level node group and the second level node group and IDs of first geographical position information; the third node comprises an ID of second geographical position information; and a regional scope displayed by the second geographical position information is larger than a regional scope displayed by the first geographical position information, wherein the IDs of the first geographical position information are formed by first node ID constructing devices that are associated with the first and second node respectively, and the ID of the second geographical position information are formed by an node ID constructing device that is associated with the third node; each of the first node ID constructing devices and the node ID constructing device comprises: an acquiring unit adapted to acquire geographical position information of a node which each of the first node ID constructing devices and the node ID constructing device associates with; a determining unit adapted to determine a hash space of a node ID by adopting a strip division method according to the geographical position information of the node; and a constructing unit adapted to randomly select one hash value from the hash space, and construct an ID of geographical position information of the node by combining the hash value with other attribute information of the node.