Patent ID: 6959193

Claim:
A method for transmitting a short message to a plurality of subscribers in a mobile communication system, comprising the steps of: transmitting from a mobile communication terminal a short message registration signal including a short message service center number, a group identifier and at least one subscriber number, the group identifier being a separately defined field from device Identifiers (IDs) of the mobile communication terminal and the plurality of the subscribers; detecting, by a short message service center, said group identifier from said short message registration signal; and registering said transmitted subscriber numbers in said short message service center in accordance with said detected group identifier; wherein said step of transmitting said short message registration signal comprises the steps of: displaying a plurality of menus; selecting a short message service menu from said plurality of displayed menus; displaying a first set of sub-menus associated with said short message service menu, said first set of sub-menus including a short message transmission mode and a short message group registration mode; instructing a calling subscriber to input a short message service center number in response to selecting said short message group registration mode sub-menu; inputting said group identifier and said subscriber numbers; and transmitting said short message signal including said short message service center number, said group identifier and said subscriber numbers; and wherein said step of inputting said subscriber umbers includes the steps of: inputting a desired subscriber number; determining if a subscriber number end key is actuated; and instructing a caller to input another desired subscriber number if said subscriber number end key is not actuated.