METHOD AND SYSTEM FOR BROADCASTING LARGE SHORT MESSAGES

摘要

A relatively large short message (BC-SMS) (31) is broadcast to a selected group of mobile subscriber stations (10a) within a cellular radio system (8). Each BC-SMS message (31) greater in size than a predetermined number of octets is divided into segments (31a-31c), formatted into a separate modified paging message (PBC) (32a-32c) which is unrecognizable to existing mobiles but recognizable to new mobiles. The BC-SMS message segments (31a-31c) are broadcast in sequence as modified paging messages (32a-32c) to the mobiles within the region of the system where the selected group (10a) is believed to be operating. Each paging message (32a-32c) includes the essential elements of a paging message, a message ID number (25), a sequence number (26) and the message segment payload (27).