1. A method comprising: responding to a request for local information, the request being sent by a remote node in a home network; querying a first node for node information of the first node; and expanding querying to a second node in the home network using the node information, the second node being a neighbor of the first node, wherein the node information includes a node network capability and a node power attribute, wherein the node network capability includes at least one of multi-channel capability, Quality of Service (QoS) capability, and QoS priority, wherein the expanding querying comprises: analyzing the node information to obtain neighbor information of the first node, and building a local knowledge base using the neighbor information, wherein building the local knowledge base comprises organizing analyzed node information, the organizing including rearranging a list of nodes to be queried or have been queried.