CONTROLLING DETACH AND DETACH TIME OF A MACHINE -TYPE COMMUNICATION DEVICE FOR SAVING SIGNALING AND REDUCING STORAGE OF REGISTRATION INFORMATION

摘要

In a system for managing signaling between a network and machine type communication (MTC) devices, an MTC device receives an indication such as a locally detached state indication and, during the validity of the indication, remains locally detached and does not attempt communication with the network except under specified conditions, such as a need by the MTC device to initiate data transfer, or triggering of the MTC device. The MTC device may also receive a local detachment timer and remain attached during the validity of the local detachment timer, with the MTC device becoming locally detached and the indication becoming valid upon expiration of the local detachment timer.