A random-access sending method, comprising: acquiring a preamble resource, and generating preamble information; determining a pilot resource according to the preamble resource and a user equipment identifier, and generating pilot information; acquiring data information, and mapping the data information to a time-frequency resource, wherein the data information comprises user equipment identifier information; and forming a radio frame from the preamble information, the pilot information and the data information, and sending the radio frame; wherein a mapping relationship between a time-frequency resource position of the user equipment identifier information and the pilot resource is: a frequency domain position of the user equipment identifier information is consistent with a frequency domain position of the pilot resource, and a time domain position of the user equipment identifier information is adjacent to a time domain position of the pilot resource; and wherein the determining the pilot resource according to the preamble resource and the user equipment identifier comprises: I DMRS = I preamble n p 2 d + ID ue mod n id 2 d mod I DMRS max wherein I DMRS is an index of the pilot resource, I preamble is an index of the preamble resource, n p 2 d is determined according to a number of preamble resources and a number of pilot resources, ID ue is the user equipment identifier, n id 2 d is an offset of the pilot resource, I DMRS max is a maximum value of I DMRS , └ ┘ represents rounding down, and mod represents modulo operation. acquiring a preamble resource, and generating preamble information; determining a pilot resource according to the preamble resource and a user equipment identifier, and generating pilot information; acquiring data information, and mapping the data information to a time-frequency resource, wherein the data information comprises user equipment identifier information; and forming a radio frame from the preamble information, the pilot information and the data information, and sending the radio frame; wherein a mapping relationship between a time-frequency resource position of the user equipment identifier information and the pilot resource is: a frequency domain position of the user equipment identifier information is consistent with a frequency domain position of the pilot resource, and a time domain position of the user equipment identifier information is adjacent to a time domain position of the pilot resource; and wherein the determining the pilot resource according to the preamble resource and the user equipment identifier comprises: I DMRS = I preamble n p 2 d + ID ue mod n id 2 d mod I DMRS max wherein I DMRS is an index of the pilot resource, I preamble is an index of the preamble resource, n p 2 d is determined according to a number of preamble resources and a number of pilot resources, ID ue is the user equipment identifier, n id 2 d is an offset of the pilot resource, I DMRS max is a maximum value of I DMRS , └ ┘ represents rounding down, and mod represents modulo operation. a frequency domain position of the user equipment identifier information is consistent with a frequency domain position of the pilot resource, and a time domain position of the user equipment identifier information is adjacent to a time domain position of the pilot resource; and wherein the determining the pilot resource according to the preamble resource and the user equipment identifier comprises: I DMRS = I preamble n p 2 d + ID ue mod n id 2 d mod I DMRS max wherein I DMRS is an index of the pilot resource, I preamble is an index of the preamble resource, n p 2 d is determined according to a number of preamble resources and a number of pilot resources, ID ue is the user equipment identifier, n id 2 d is an offset of the pilot resource, I DMRS max is a maximum value of I DMRS , └ ┘ represents rounding down, and mod represents modulo operation. <EOS>