A data transmission method for a frame based equipment, FBE, that is performed by a second access network device, comprising: receiving transmission status indication information sent by a first access network device, wherein the transmission status indication information includes beam occupation information and cycle occupation information, the beam occupation information is used for indicating a first beam occupied for transmitting first data between the first access network device and a first terminal, and the cycle occupation information is used for indicating a fixed cycle occupied for transmitting the first data; determining a second beam having a mutually exclusive interference relationship with the first beam; determining a fixed cycle occupied by the second data based on the fixed cycle occupied by the first data when the second access network device needs to perform transmission of second data with a second terminal by using the second beam, wherein the determining the fixed cycle occupied by the second data based on the fixed cycle occupied by the first data comprises: selecting for uplink data in the second data, a fixed cycle meeting a first condition as the fixed cycle occupied by the uplink data in the second data, the first condition including that there is no overlap with the fixed cycle occupied by the first data; and selecting for downlink data in the second data, a fixed cycle meeting a second condition as the fixed cycle occupied by the downlink data in the second data, the second condition only including that there is no overlap with a fixed cycle occupied by uplink data in the first data; and performing transmission of the second data with the second terminal in the fixed cycle occupied by the second data. receiving transmission status indication information sent by a first access network device, wherein the transmission status indication information includes beam occupation information and cycle occupation information, the beam occupation information is used for indicating a first beam occupied for transmitting first data between the first access network device and a first terminal, and the cycle occupation information is used for indicating a fixed cycle occupied for transmitting the first data; determining a second beam having a mutually exclusive interference relationship with the first beam; determining a fixed cycle occupied by the second data based on the fixed cycle occupied by the first data when the second access network device needs to perform transmission of second data with a second terminal by using the second beam, wherein the determining the fixed cycle occupied by the second data based on the fixed cycle occupied by the first data comprises: selecting for uplink data in the second data, a fixed cycle meeting a first condition as the fixed cycle occupied by the uplink data in the second data, the first condition including that there is no overlap with the fixed cycle occupied by the first data; and selecting for downlink data in the second data, a fixed cycle meeting a second condition as the fixed cycle occupied by the downlink data in the second data, the second condition only including that there is no overlap with a fixed cycle occupied by uplink data in the first data; and performing transmission of the second data with the second terminal in the fixed cycle occupied by the second data. selecting for uplink data in the second data, a fixed cycle meeting a first condition as the fixed cycle occupied by the uplink data in the second data, the first condition including that there is no overlap with the fixed cycle occupied by the first data; and selecting for downlink data in the second data, a fixed cycle meeting a second condition as the fixed cycle occupied by the downlink data in the second data, the second condition only including that there is no overlap with a fixed cycle occupied by uplink data in the first data; and performing transmission of the second data with the second terminal in the fixed cycle occupied by the second data.