A wireless communication apparatus (1A-1, 1A-2, 2A) comprising: a channel-usage selection unit configured to select one frequency channel for each time slot from a plurality of predetermined candidate frequency channels; and a wireless communication unit configured to perform wireless communication by using the frequency channel selected by the channel-usage selection unit wherein the channel-usage selection unit is configured to select a frequency channel that is different from a frequency channel to be used in a same time slot by an adjacent cell located at a cell interval, equal to or smaller than predetermined first number of cells, from a cell used for the wireless communication, and allow the frequency channel selected to overlap with the frequency channel to be used in a same time slot by a remote cell located at a cell interval, greater than the first number of cells and equal to or smaller than number of the candidate frequency channels, from a cell used for the wireless communication, wherein a cell interval between a cell used by the wireless communication unit for the wireless communication and a cell that uses the same frequency channel in all time slots is greater than the number of the candidate frequency channels; characterized in that the channel-usage selection unit is further adapted to select one frequency channel for each time slot according to the following equation: p i j = mod j * d m + s n, 16 where: p[i,j] is the number of the candidate frequency channel used for a cell i in a time slot j, the cell number i ranges from 0 to M-1, the time slot number j within a frame ranges from 0 to N-1, M is defined as the number of cells within a wireless communication system, N is defined as the number of slots within the frame, d[m] represents a frequency channel interval between the time slots, and s[n] represents an offset of a hopping pattern between the cells; wherein the quantity of the candidate frequency channels is 16; wherein m=mod(i/16,2)..., m is a remainder obtained after the quotient of i/16 in the equation is further divided by 2, the value of m is 0 or 1; when m = 0, d(m) = 3, and when m = 1, d(m) = 7; wherein n=mod(i,16)... equation, the value of s[n] is any one of 0, 4, 8, 12, 1, 5, 9, 13, 3, 7, 11, 15, 2, 6, 10, and 14 in accordance with the value of r, respectively; wherein a value of d[m] and a value of s[n] are output from a base-station control unit to the channel-usage selection unit. a channel-usage selection unit configured to select one frequency channel for each time slot from a plurality of predetermined candidate frequency channels; and a wireless communication unit configured to perform wireless communication by using the frequency channel selected by the channel-usage selection unit wherein the channel-usage selection unit is configured to select a frequency channel that is different from a frequency channel to be used in a same time slot by an adjacent cell located at a cell interval, equal to or smaller than predetermined first number of cells, from a cell used for the wireless communication, and allow the frequency channel selected to overlap with the frequency channel to be used in a same time slot by a remote cell located at a cell interval, greater than the first number of cells and equal to or smaller than number of the candidate frequency channels, from a cell used for the wireless communication, wherein a cell interval between a cell used by the wireless communication unit for the wireless communication and a cell that uses the same frequency channel in all time slots is greater than the number of the candidate frequency channels; characterized in that the channel-usage selection unit is further adapted to select one frequency channel for each time slot according to the following equation: p i j = mod j * d m + s n, 16 where: p[i,j] is the number of the candidate frequency channel used for a cell i in a time slot j, the cell number i ranges from 0 to M-1, the time slot number j within a frame ranges from 0 to N-1, M is defined as the number of cells within a wireless communication system, N is defined as the number of slots within the frame, d[m] represents a frequency channel interval between the time slots, and s[n] represents an offset of a hopping pattern between the cells; wherein the quantity of the candidate frequency channels is 16; wherein m=mod(i/16,2)..., m is a remainder obtained after the quotient of i/16 in the equation is further divided by 2, the value of m is 0 or 1; when m = 0, d(m) = 3, and when m = 1, d(m) = 7; wherein n=mod(i,16)... equation, the value of s[n] is any one of 0, 4, 8, 12, 1, 5, 9, 13, 3, 7, 11, 15, 2, 6, 10, and 14 in accordance with the value of r, respectively; wherein a value of d[m] and a value of s[n] are output from a base-station control unit to the channel-usage selection unit.