A communications node includes data defining a division of a communications channel into a plurality of contiguous sub-bands each having N frequency resources, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information according to the following: y={x+a(t)N} mod NRB where NRB is the total number of frequency resources in the transmission band; N is the number of contiguous frequency resources in each sub-band; x is the initially allocated frequency resource; y is the frequency hopped resource; t is a time counter; a(t) is the frequency hopping shift applied at time point t, and is an integer value from the set {0, 1, . . . , S−1}; and S is the number of sub-bands; and a transceiver.