| 摘要 |
<p>Disclosed is a method for selecting relay nodes. A relay control node obtains from at least one network topology information server network mappings and cost mappings, and generates or updates a list of relay nodes according to the obtained relay nodes information; upon receiving from a first correspondent node a request for relay nodes, the relay control node processes the list of relay nodes according to the request for relay nodes, the network mappings, and the cost mappings, and returns the processed list of relay nodes to the first correspondent node; the first correspondent node selects a relay node for data forwarding from the received list of relay nodes. Also disclosed are a system for selecting relay nodes and a relay control node. By applying the method as put forth in the present invention, the selection of relay nodes can be reasonably achieved in a simple manner by using few messages, thereby alleviating the burden of network topology information servers.</p> |
