A new multi-hop transmission system and transmission method

The invention discloses a novel multi-hop routing transmission system and method. The transmission system comprises a source node for transmitting data and a target node for receiving data, wherein a backup node for receiving data transmitted by the source node is arranged between the source node and the target node, and is used for executing the functions of the target node instead of the target node when the target node cannot correctly receive data transmitted by the source node; the distance between the backup node and the target node is a backup step length; and the backup step length is smaller than the distance between the source node and the target node. In the invention, an efficient multi-hop routing transmission mode is adopted, so that the transmission times can be reduced effectively, and wireless resources such as transmission power and the like can be saved.