Mobile communication system, different mobile devices sharing same phone number on mobile communication system, and method of providing mobile communication service between different mobile devices sharing same phone number

Abstract

A mobile device configured to share a phone number of another mobile device on a mobile communication system, the mobile device including: a controller configured to, after determining that a phone function of the another mobile device is deactivated, activate a phone function of the mobile device to which the phone number of the another mobile device is assigned; and a communicator configured to perform a mobile communication function using the phone number when the phone function of the mobile device is activated.

What is claimed is: 
     
         1 . A method of providing a mobile communication service of a wearable device comprising:
 connecting to a mobile device;   receiving, from a server of a mobile communication service provider, a notification of an incoming call made to a phone number of the mobile device; and   receiving a phone call according to the notification.   
     
     
         2 . The method of  claim 1 , further comprising:
 transmitting, to the mobile device, information of the termination of the phone call, when the phone call is terminated; and   updating a recent call history.   
     
     
         3 . The method of  claim 1 , further comprising:
 transmitting, to the mobile device, information of receiving the notification.   
     
     
         4 . The method of  claim 3 , further comprising:
 receiving, from the mobile device, information of the termination of a phone call made to the phone number of the mobile device at the mobile device, and   updating a recent call history.   
     
     
         5 . The method of  claim 1 , further comprising:
 setting the wearable device as a primary receiving device.   
     
     
         6 . The method of  claim 1 , wherein the wearable device is a standalone type device. 
     
     
         7 . A method of providing a mobile communication service of a wearable device comprising:
 connecting to a mobile device;   receiving, from the mobile device, a notification of an incoming call made to a phone number of the mobile device; and   receiving a phone call forwarded from the mobile device according to the notification.   
     
     
         8 . The method of  claim 7 , further comprising:
 updating a recent call history.   
     
     
         9 . The method of  claim 7 , further comprising:
 receiving, from the mobile device, information of the termination of a phone call made to the phone number of the mobile device at the mobile device, and   updating a recent call history.   
     
     
         10 . The method of  claim 7 , wherein the wearable device is a companion type device. 
     
     
         11 . An wearable device in a wireless communication system comprising:
 transceiver; and   at least one processor configured to:
 connect to a mobile device; 
 receive, from a server of a mobile communication service provider, a notification of an incoming call made to a phone number of the mobile device; and 
 receive a phone call according to the notification.