A method for uplink information transmission, characterized by comprising: receiving on a first carrier based on a first communication protocol, by a terminal device, first downlink information transmitted by a first access network device; receiving on a second carrier based on a second communication protocol, by the terminal device, second downlink information transmitted by a second access network device; and transmitting in a first resource in a target carrier, by the terminal device, first uplink information to the first access network device based on the first communication protocol, and transmitting in a second resource in the target carrier, by the terminal device, second uplink information to the second access network device, wherein the second resource in the target carrier is indicated to the second access network device through first configuration information transmitted from the first access network device, and the second resource is a physical resource configured by the first access network device for the second access network device to receive the second uplink information; wherein the first configuration information is used to indicate a first time-domain resource set and a second frequency-domain resource set, and the second frequency-domain resource set in each time slot or each subframe comprised in the first time-domain resource set in the target carrier is reserved for the second access network device; wherein the first communication protocol is different from the second communication protocol; wherein the method further comprises: receiving, by the terminal device, second configuration information transmitted by the first access network device, wherein the second configuration information is used to indicate a transmission parameter of the first uplink information; wherein the method further comprises: receiving (702, 704), by the terminal device, fifth configuration information transmitted by the first access network device and sixth configuration information transmitted by the second access network device, and determining a transmission parameter of the second uplink information according to the fifth configuration information and the six configuration information, wherein the fifth configuration information is used to indicate a first time-frequency resource, and the sixth configuration information is used to indicate a second time-frequency resource which is a subset of the first time-frequency resource. receiving on a first carrier based on a first communication protocol, by a terminal device, first downlink information transmitted by a first access network device; receiving on a second carrier based on a second communication protocol, by the terminal device, second downlink information transmitted by a second access network device; and transmitting in a first resource in a target carrier, by the terminal device, first uplink information to the first access network device based on the first communication protocol, and transmitting in a second resource in the target carrier, by the terminal device, second uplink information to the second access network device, wherein the second resource in the target carrier is indicated to the second access network device through first configuration information transmitted from the first access network device, and the second resource is a physical resource configured by the first access network device for the second access network device to receive the second uplink information; wherein the first configuration information is used to indicate a first time-domain resource set and a second frequency-domain resource set, and the second frequency-domain resource set in each time slot or each subframe comprised in the first time-domain resource set in the target carrier is reserved for the second access network device; wherein the first communication protocol is different from the second communication protocol; wherein the method further comprises: receiving, by the terminal device, second configuration information transmitted by the first access network device, wherein the second configuration information is used to indicate a transmission parameter of the first uplink information; wherein the method further comprises: receiving (702, 704), by the terminal device, fifth configuration information transmitted by the first access network device and sixth configuration information transmitted by the second access network device, and determining a transmission parameter of the second uplink information according to the fifth configuration information and the six configuration information, wherein the fifth configuration information is used to indicate a first time-frequency resource, and the sixth configuration information is used to indicate a second time-frequency resource which is a subset of the first time-frequency resource.