IMPROVED UE WITH AN INTEGRATED SUBSCRIBER IDENTITY MODULES (iSIM) BY A SHARED iSIM FILE SYSTEM AND A METHOD THEREOF

摘要

The invention discloses an improved Narrowband Internet of Things device (UE) comprising a modem and an integrated Subscriber Identity Module (iSIM), both combined on a modem chip.The object of the invention to further reduce the cost per UE and to reduce the power consumption of an integrated UICC chip and the processing time will be solved therein that the modem and the iSIM share a common memory block on the modem chip and the modem accesses data comprising a SIM file system with the iSIM profile which is stored in the shared memory block without waking-up the iSIM. The object is also solved by a memory block on the modem chip, which is shared by the modem and the iSIM, whereas a SIM file system with the iSIM profile is stored in the memory block.