A method for transmitting and receiving information, comprising: receiving, by a terminal device on a first downlink carrier, a broadcast message transmitted by a network device, wherein the broadcast message comprises second downlink configuration information corresponding to a second downlink carrier, wherein the second downlink configuration information comprises second downlink frequency information and/or physical cell identifier information of the second downlink carrier, the first downlink carrier and a second uplink carrier are serving carriers of the terminal device, the second downlink carrier is not a serving carrier of the terminal device, and the second downlink carrier and the second uplink carrier are paired carriers on a system level; wherein the first downlink carrier is located on a first band in a New Radio, NR, system, the second uplink carrier and the second downlink carrier are located on a second band in a Long Term Evolution, LTE, system, and a frequency of the first band is higher than a frequency of the second band; wherein after the receiving, by a terminal device on a first downlink carrier, a broadcast message transmitted by a network device, the method further comprises: determining, by the terminal device, reference information of the second downlink carrier based on the second downlink configuration information; wherein the reference information comprises at least one of the following: a reference path loss and a reference downlink receive timing; wherein after the determining reference information of the second downlink carrier, the method further comprises: transmitting, by the terminal device, an uplink signal on the second uplink carrier to the network device based on the reference information of the second downlink carrier. receiving, by a terminal device on a first downlink carrier, a broadcast message transmitted by a network device, wherein the broadcast message comprises second downlink configuration information corresponding to a second downlink carrier, wherein the second downlink configuration information comprises second downlink frequency information and/or physical cell identifier information of the second downlink carrier, the first downlink carrier and a second uplink carrier are serving carriers of the terminal device, the second downlink carrier is not a serving carrier of the terminal device, and the second downlink carrier and the second uplink carrier are paired carriers on a system level; wherein the first downlink carrier is located on a first band in a New Radio, NR, system, the second uplink carrier and the second downlink carrier are located on a second band in a Long Term Evolution, LTE, system, and a frequency of the first band is higher than a frequency of the second band; wherein after the receiving, by a terminal device on a first downlink carrier, a broadcast message transmitted by a network device, the method further comprises: determining, by the terminal device, reference information of the second downlink carrier based on the second downlink configuration information; wherein the reference information comprises at least one of the following: a reference path loss and a reference downlink receive timing; wherein after the determining reference information of the second downlink carrier, the method further comprises: transmitting, by the terminal device, an uplink signal on the second uplink carrier to the network device based on the reference information of the second downlink carrier. determining, by the terminal device, reference information of the second downlink carrier based on the second downlink configuration information; wherein the reference information comprises at least one of the following: a reference path loss and a reference downlink receive timing; wherein after the determining reference information of the second downlink carrier, the method further comprises: transmitting, by the terminal device, an uplink signal on the second uplink carrier to the network device based on the reference information of the second downlink carrier.