Patent ID: 8306546

Claim:
A method of providing a machine-type communication (MTC) service in a wireless communication system, the method comprising: transmitting a general packet radio service (GPRS) attach accept message and a routing area update (RAU) accept message to the MTC device, the GPRS attach accept message and the RAU accept message including MTC group information for at least one MTC group; and transmitting a system information (SI) message of a GSM/EDGE radio access network (GERAN) or a paging request message to the MTC device, the SI message or the paging request message including the MTC group information and an identifier (ID) of an MTC group, wherein the MTC group is a group of MTC devices that share one or more MTC features, wherein the MTC group information includes MTC offline indication period information indicating a threshold of a time for reporting network inaccessibility to the network when the MTC device in the MTC group is unable to access to the network, wherein the threshold is a cycle of a periodic routing area update (RAU).