Provided is a method and system for managing an identifica tion (ID) of a widely moved
sensor node. The method includes recognizing, at a gateway, a node to check an ID of the
node, allocating an ID of the gateway as the ID of the node when the ID of the node checked
by the gateway is null, sending the ID of the node to a management server when the ID of
the node checked by the gateway is not null and is different from the ID of the gateway, and
when a new ID is received from the management server, allocating the new ID as the ID of …