A receiving device includes a receiving unit that receives, via a receiving antenna, an image signal including an in-vivo image of a subject that is captured by an in-vivo-image acquiring device introduced into the subject; a transmitting unit that wirelessly transmits the image signal to a real-time display device that displays the in-vivo image in real time; a detecting unit that detects a non-receiving period in which the receiving unit does not receive the image signal; and a control unit that performs a control to wirelessly transmit the image signal to the real-time display device during the non-receiving period immediately after receipt of the image signal by the receiving unit.

A method for configuring a random access occasion, the method comprising: an access network device sends RO configuration parameters, the configuration parameters comprising: the shift value of the starting position of a shared RO relative to the starting position of an RO adopted for four-step random access, the shared RO being an RO shared by four step random access and two step random access.