Abstract: Provided is a low capability device (UE) active in a communication system comprising a plurality of satellites (Si, Sj) insuring a temporally continuous communication coverage for the low capability device (UE), said satellites being further grouped in families (S1x), satellites of a same family (S1x) sharing same and common access information, said device (UE) comprises a power saving module to send to the serving satellite (S11), during a first data session, a next access request for a next or continued data session with time indications including at least a desired next time interval to be granted for communication. Other embodiments disclosed.