Method for allocating uati in a mobile communication system for high-speed data transmission

Abstract

A signaling processing method for allocating a UATI (Unicast Access Terminal Identifier) to a given AT (Access Terminal) in a mobile communication system including ANs (Access Networks) each having an BS (Access Network Controller), for communicating by radio with ATs, and at least one DLR (Data Location Register) connected to BSs, for storing a plurality of UATIs, which can be allocated to the ATs, and managing the remaining UATIs that are not allocated. Upon receipt of a UATI Request message from the AT, the BS transmits a UATI Allocate Request message to the DLR. Upon receipt of the UATI Allocate Request message, the DLR allocates one of the remaining UATIs to the AT and transmits a UATI Allocate Response message including the allocated UATI to the BS. Upon receipt of the UATI Allocate Response message, the BS transmits a UATI Allocate message including the allocated UATI to the AT.

1 . A method for allocating a UATI (Unicast Access Terminal Identifier) to a given AT (Access Terminal) in a mobile communication system including a base station (BS) and a DLR (Data Location Register) connected to the BS, for managing a plurality of UATIs for the ATs, where the AT to which the UATI is allocated by a first DLR move to a second DLR, the method comprising the steps of: 
 upon receipt of a UATI Request message including an old UATI from the AT by the BS, transmitting to the second DLR a UATI Allocate Request message to request the second DLR to reallocate the UATI;    upon receipt of the UATI Allocate Request message by the second DLR, transmitting to the first DLR a Session Information Request message to request the first DLR to transmit session information relating to the old UATI;    upon receipt of the Session Information Request message by the first DLR, transmitting a Session Information Response message including the session information relating to the old UATI to the second DLR;    reallocating one of the remaining UATIs to the AT by the second DLR and transmitting a UATI Allocate Response message including the reallocated UATI to the BS; and    upon receipt of the UATI Allocate Response message by the BS, transmitting a UATI Allocate message including the reallocated UATI to the AT.    
   
   
       2 . The method of  claim 1 , further comprising the steps of: 
 upon receipt of a UATI Allocate Complete message by the BS from the AT, which has received the UATI Allocate message, transmitting a UATI Allocate Complete Request message to the second DLR; and    upon receipt of the UATI Allocate Complete Request message by the second DLR, transmitting a UATI Allocate Complete Response message to the BS, thereby terminating a UATI allocating procedure.