A response method for groupcast data transmission, applied to a first node, comprising: transmitting, by the first node, at least one groupcast frame to at least one groupcast group, wherein each of the at least one groupcast group comprises more than one second node; transmitting, by the first node, trigger information to a plurality of second nodes corresponding to the at least one groupcast group, wherein the trigger information is configured to trigger the plurality of second nodes to contend for transmitting a groupcast response frame on a specified random access resource block, or the trigger information is configured to the plurality of second nodes to contend for transmitting a groupcast response frame on a specified random access resource block and trigger a specified second node to transmit the groupcast response frame on a specified fixed access resource block; and receiving, by the first node, the groupcast response frame transmitted from at least one second node; characterized in that the method further comprises: transmitting, by the first node, random access control information about the random access resource block to the plurality of second nodes, wherein the random access control information comprises at least one of the following: a response threshold of the plurality of second nodes, wherein the response threshold is a control threshold for a correct-rate of corresponding groupcast frames, wherein the control threshold for a correct-rate of corresponding groupcast frames is used for the second node to transmit the groupcast response frame on one of at least one random access resource block allocated if the correct-rate is lower than the control threshold, and transmit no groupcast response frame if the correct-rate is higher than the control threshold; and a random access resource contention window, RCW, of the plurality of second nodes. transmitting, by the first node, at least one groupcast frame to at least one groupcast group, wherein each of the at least one groupcast group comprises more than one second node; transmitting, by the first node, trigger information to a plurality of second nodes corresponding to the at least one groupcast group, wherein the trigger information is configured to trigger the plurality of second nodes to contend for transmitting a groupcast response frame on a specified random access resource block, or the trigger information is configured to the plurality of second nodes to contend for transmitting a groupcast response frame on a specified random access resource block and trigger a specified second node to transmit the groupcast response frame on a specified fixed access resource block; and receiving, by the first node, the groupcast response frame transmitted from at least one second node; characterized in that the method further comprises: transmitting, by the first node, random access control information about the random access resource block to the plurality of second nodes, wherein the random access control information comprises at least one of the following: a response threshold of the plurality of second nodes, wherein the response threshold is a control threshold for a correct-rate of corresponding groupcast frames, wherein the control threshold for a correct-rate of corresponding groupcast frames is used for the second node to transmit the groupcast response frame on one of at least one random access resource block allocated if the correct-rate is lower than the control threshold, and transmit no groupcast response frame if the correct-rate is higher than the control threshold; and a random access resource contention window, RCW, of the plurality of second nodes. a response threshold of the plurality of second nodes, wherein the response threshold is a control threshold for a correct-rate of corresponding groupcast frames, wherein the control threshold for a correct-rate of corresponding groupcast frames is used for the second node to transmit the groupcast response frame on one of at least one random access resource block allocated if the correct-rate is lower than the control threshold, and transmit no groupcast response frame if the correct-rate is higher than the control threshold; and a random access resource contention window, RCW, of the plurality of second nodes.