The present disclosure relates to a method, a device and a computer program for configuring a guard period in Half Duplex Frequency Division Duplex, HD-FDD, operation. According to some aspects, the disclosure relates to a method, performed in a wireless device, of configuring a guard period in HD-FDD operation. The method comprises obtaining a timing advance between the wireless device and an access point; and determining a guard period in the wireless device based on the obtained timing advance and a radio access capability of the wireless device. The disclosure also relates to a wireless device and to a computer program for executing the methods.