A signal transmission method, comprising that the steps of receiving, by a second communication node, data according to a known data transmission manner within a first time length after a control channel, and receiving, by the second communication node, data by adopting data transmission manner related information notified by a control signaling after the first time length, wherein the control signaling is a dynamical control signaling scheduling the data; determining, by the second communication node, a number N of data sets comprised in data transmitted by a first communication node to the second communication node in a time unit, wherein when the number N of the data sets is greater than one, M data set(s) and N-M data set(s) are time division multiplexed, with M<N; wherein each of the known data transmission manner and the data transmission manner notified by the control signaling comprises the following: a spatial transmitting manner that the first communication node transmits data and a spatial receiving manner that the second communication node receives data; and the known data transmission manner satisfies the following characteristics: a spatial transmitting manner known by the second communication node being determined according to a spatial transmitting manner that the first communication node transmits a control signaling; and a spatial receiving manner known by the second communication node being the same as a spatial receiving manner that the second communication node receives a control signaling; wherein the spatial transmitting manner comprises a transmitting beam and the spatial receiving manner comprises a receiving beam. receiving, by a second communication node, data according to a known data transmission manner within a first time length after a control channel, and receiving, by the second communication node, data by adopting data transmission manner related information notified by a control signaling after the first time length, wherein the control signaling is a dynamical control signaling scheduling the data; determining, by the second communication node, a number N of data sets comprised in data transmitted by a first communication node to the second communication node in a time unit, wherein when the number N of the data sets is greater than one, M data set(s) and N-M data set(s) are time division multiplexed, with M<N; wherein each of the known data transmission manner and the data transmission manner notified by the control signaling comprises the following: a spatial transmitting manner that the first communication node transmits data and a spatial receiving manner that the second communication node receives data; and a spatial transmitting manner that the first communication node transmits data and a spatial receiving manner that the second communication node receives data; and the known data transmission manner satisfies the following characteristics: a spatial transmitting manner known by the second communication node being determined according to a spatial transmitting manner that the first communication node transmits a control signaling; and a spatial receiving manner known by the second communication node being the same as a spatial receiving manner that the second communication node receives a control signaling; a spatial transmitting manner known by the second communication node being determined according to a spatial transmitting manner that the first communication node transmits a control signaling; and a spatial receiving manner known by the second communication node being the same as a spatial receiving manner that the second communication node receives a control signaling; wherein the spatial transmitting manner comprises a transmitting beam and the spatial receiving manner comprises a receiving beam.