The present invention is directed to a method and an apparatus for use in a wireless communication system. Specifically, the present invention is directed to a method of assisting a discovery between hidden wireless nodes and an apparatus therefore, in which the method comprises: receiving, from a first wireless node, a first message including at least one of node identification information and service identification information; receiving, from a second wireless node, a second message including at least one of node identification information and service identification information; conveying, to the second wireless node, at least part of the first message through a third message when one or more conditions are met, wherein the third message includes counting information indicating how many hops the at least part of the first message is conveyed, wherein the one or more condition include that the service information in the first message is matched with the service information in the second message.