A radio resource mapping method, in which a wireless communication system maps subcarriers to resource units through external permutation and internal permutation, wherein the external permutation comprises: performing a first permutation on n physical resource units in every N1 physical resource units, orderly selecting n1×N1 physical resource units from the n physical resource units obtained from the first permutation, and performing a second permutation on remaining n-n1×N1 physical resource units in every N2 physical resource units, wherein n, N1, and N2 are all integers greater than or equal to 1, and N1 is not equal to N2, and n1 is an integer greater than or equal to 0, and mapping the n physical resource units after the external permutation to frequency partitions according to resource configuration; characterized in that, the resource configuration comprises one or a combination of the following: multi-carrier information, the number n of the physical resource units and/or system bandwidth, frequency partition information; wherein the frequency partition information comprises one or a combination of the following: the number of frequency partitions, the size of a distributed resource group in a frequency partition, the size of a localized resource group in a frequency partition, N1 or N2, or N1 and N2; wherein the mapping the n physical resource units to frequency partitions according to resource configuration comprises: based on the frequency partition information, for the n physical resource units, firstly performing permutation in every max (N1, N2) physical resource units and configuring each frequency partition, and then performing permutation in every min (N1, N2) physical resource units and configuring each frequency partition. performing a first permutation on n physical resource units in every N1 physical resource units, orderly selecting n1×N1 physical resource units from the n physical resource units obtained from the first permutation, and performing a second permutation on remaining n-n1×N1 physical resource units in every N2 physical resource units, wherein n, N1, and N2 are all integers greater than or equal to 1, and N1 is not equal to N2, and n1 is an integer greater than or equal to 0, and mapping the n physical resource units after the external permutation to frequency partitions according to resource configuration; characterized in that, the resource configuration comprises one or a combination of the following: multi-carrier information, the number n of the physical resource units and/or system bandwidth, frequency partition information; wherein the frequency partition information comprises one or a combination of the following: the number of frequency partitions, the size of a distributed resource group in a frequency partition, the size of a localized resource group in a frequency partition, N1 or N2, or N1 and N2; wherein the frequency partition information comprises one or a combination of the following: the number of frequency partitions, the size of a distributed resource group in a frequency partition, the size of a localized resource group in a frequency partition, N1 or N2, or N1 and N2; wherein the mapping the n physical resource units to frequency partitions according to resource configuration comprises: based on the frequency partition information, for the n physical resource units, firstly performing permutation in every max (N1, N2) physical resource units and configuring each frequency partition, and then performing permutation in every min (N1, N2) physical resource units and configuring each frequency partition.