A communication method by a mobile terminal in a heterogeneous network comprising a micro base station and a macrocell base station to which the micro base station belongs, said method comprising steps of: accessing, a cellular communication system via the micro base station; and said method being characterized in that: when data signaling is to be transmitted from the mobile terminal to the micro base station, determining symbols to be occupied by the to-be-transmitted data signaling, wherein each of said symbols has a length which is equal to the length of a microcell subframe divided into a number K of symbols comprised in a microcell subframe; and transmitting the data signaling to the micro base station on the basis of the determined symbols rather than on the basis of the microcell subframe; and/or when data signaling is to be received by the mobile terminal from the micro base station, determining symbols to be occupied by the to-be-received data signaling, wherein each of said symbols has a length which is equal to the length of a microcell subframe divided into a number K of symbols comprised in a microcell subframe, and receiving the data signaling from the micro base station on the basis of the determined symbols rather than on the basis of the microcell subframe; wherein the data signaling includes data, information about a modulation mode of the data, information about a length of the data and transmission resource indication information about the data; wherein the length of the microcell subframe is equal to the length of a macrocell subframe and wherein the number of symbols comprised in the microcell subframe is greater than the number of symbols comprised in the macrocell subframe, wherein the macrocell subframe comprises M symbols, a macrocell frame comprises N macrocell subframes, a macrocell superframe comprises L macrocell frames, and wherein the microcell subframe comprises K symbols, a microcell frame comprises N microcell subframes, a microcell superframe comprises L microcell frames, such that K is greater than M. accessing, a cellular communication system via the micro base station; and said method being characterized in that: when data signaling is to be transmitted from the mobile terminal to the micro base station, determining symbols to be occupied by the to-be-transmitted data signaling, wherein each of said symbols has a length which is equal to the length of a microcell subframe divided into a number K of symbols comprised in a microcell subframe; and transmitting the data signaling to the micro base station on the basis of the determined symbols rather than on the basis of the microcell subframe; and/or when data signaling is to be received by the mobile terminal from the micro base station, determining symbols to be occupied by the to-be-received data signaling, wherein each of said symbols has a length which is equal to the length of a microcell subframe divided into a number K of symbols comprised in a microcell subframe, and receiving the data signaling from the micro base station on the basis of the determined symbols rather than on the basis of the microcell subframe; when data signaling is to be transmitted from the mobile terminal to the micro base station, determining symbols to be occupied by the to-be-transmitted data signaling, wherein each of said symbols has a length which is equal to the length of a microcell subframe divided into a number K of symbols comprised in a microcell subframe; and transmitting the data signaling to the micro base station on the basis of the determined symbols rather than on the basis of the microcell subframe; and/or when data signaling is to be received by the mobile terminal from the micro base station, determining symbols to be occupied by the to-be-received data signaling, wherein each of said symbols has a length which is equal to the length of a microcell subframe divided into a number K of symbols comprised in a microcell subframe, and receiving the data signaling from the micro base station on the basis of the determined symbols rather than on the basis of the microcell subframe; wherein the data signaling includes data, information about a modulation mode of the data, information about a length of the data and transmission resource indication information about the data; wherein the length of the microcell subframe is equal to the length of a macrocell subframe and wherein the number of symbols comprised in the microcell subframe is greater than the number of symbols comprised in the macrocell subframe, wherein the macrocell subframe comprises M symbols, a macrocell frame comprises N macrocell subframes, a macrocell superframe comprises L macrocell frames, and wherein the microcell subframe comprises K symbols, a microcell frame comprises N microcell subframes, a microcell superframe comprises L microcell frames, such that K is greater than M.