Random access response message sending method and node

A method for sending a Random Access Response, RAR, message, comprising:

• sending, by a first type node, an RAR message through a downlink channel, wherein the RAR carries one or more pieces of RAR information of a second type node;
• wherein the RAR information of the second type node comprises resource allocation information required for the second type node to send a Msg3 message;
• and
• wherein position information of a band occupied by sending the Msg3 message through the second type node is determined by at least one of the following manners:
• determining in a pre-defined manner,
• indicating in the RAR information of the second type node,
• occupying a same band as a random access signaling sent by the second type node, and
• determining by a band occupied by the random access signaling sent by the second type node.