Multi-wireless link sharing resource configuration method, signal transmission method and nodes

A multi-wireless link sharing resource configuration method, a signal transmission method and nodes are disclosed. Multiple wireless links comprise a first link and a second link. P-Q configuration is performed on a set N formed by a group of continuous units. A set P used for second link/third link downlink transmission and a set Q used for second link/third link uplink transmission are determined. U-V configuration is performed on a set N, and a set U used for first link/third link downlink transmission and a set V used for first link/third link uplink transmission are determined. A set S is used for the second link/third link uplink transmission and second link/third link downlink transmission. The first link is a link between a first node and a second node. The second link is a link between the second node and a third node. The methods and the nodes of the invention support flexible and rapid resource distribution of the multiple wireless links, such as sBL and AL.