A method for determining channel loss, comprising: receiving first information that is from a first user equipment UE according to a transmission type of the first information, wherein the first information is a random access preamble, wherein the transmission type of the first information comprises a first repeating factor of the random access preamble in an enhanced random access opportunity, wherein the transmission type of the first information corresponds to the rank of a channel loss extent, and the enhanced random access opportunity embodies a time and/or frequency resource location of the repeated random access preamble, wherein the channel loss comprises reference signal received power or channel quality information; and determining the rank of the channel loss extent of the first UE according to the first information, comprising: determining a random access preamble group in which the first information is located, and determining the rank of the channel loss extent of the first UE according to correspondence between the random access preamble group and the rank of the channel loss extent; sending third information according to a transmission type of the third information, wherein: the third information comprises at least one of the following: a physical downlink control channel, a random access response message, a contention resolution message, a unicast physical downlink shared channel; and/or receiving third information according to a transmission type of the third information, wherein: the third information comprises at least one of the following: a physical uplink shared channel, a physical uplink control channel; wherein the transmission type of the third information corresponds to the determined rank of the channel loss extent of the first UE, the transmission type of the third information comprises a second repeating factor of the third information that is sent or received in a transmission opportunity of the third information, and the transmission opportunity of the third information embodies a location of a time and/or frequency resource for sending or receiving the third information. receiving first information that is from a first user equipment UE according to a transmission type of the first information, wherein the first information is a random access preamble, wherein the transmission type of the first information comprises a first repeating factor of the random access preamble in an enhanced random access opportunity, wherein the transmission type of the first information corresponds to the rank of a channel loss extent, and the enhanced random access opportunity embodies a time and/or frequency resource location of the repeated random access preamble, wherein the channel loss comprises reference signal received power or channel quality information; and determining the rank of the channel loss extent of the first UE according to the first information, comprising: determining a random access preamble group in which the first information is located, and determining the rank of the channel loss extent of the first UE according to correspondence between the random access preamble group and the rank of the channel loss extent; sending third information according to a transmission type of the third information, wherein: the third information comprises at least one of the following: a physical downlink control channel, a random access response message, a contention resolution message, a unicast physical downlink shared channel; and/or receiving third information according to a transmission type of the third information, wherein: the third information comprises at least one of the following: a physical uplink shared channel, a physical uplink control channel; wherein the transmission type of the third information corresponds to the determined rank of the channel loss extent of the first UE, the transmission type of the third information comprises a second repeating factor of the third information that is sent or received in a transmission opportunity of the third information, and the transmission opportunity of the third information embodies a location of a time and/or frequency resource for sending or receiving the third information. determining a random access preamble group in which the first information is located, and determining the rank of the channel loss extent of the first UE according to correspondence between the random access preamble group and the rank of the channel loss extent; sending third information according to a transmission type of the third information, wherein: the third information comprises at least one of the following: a physical downlink control channel, a random access response message, a contention resolution message, a unicast physical downlink shared channel; and/or receiving third information according to a transmission type of the third information, wherein: the third information comprises at least one of the following: a physical uplink shared channel, a physical uplink control channel; wherein the transmission type of the third information corresponds to the determined rank of the channel loss extent of the first UE, the transmission type of the third information comprises a second repeating factor of the third information that is sent or received in a transmission opportunity of the third information, and the transmission opportunity of the third information embodies a location of a time and/or frequency resource for sending or receiving the third information.