Abstract: A mobile terminal and a method to transmit a handover complete message in a handover process are provided. The handover method of the present invention includes determining, when a handover command message is received, a handover complete message transmission period, transmitting, when channel establishment information is received, a handover complete message during the handover complete message transmission period, and completing, when a handover complete message transmission period expires, handover to communicate with a base station to which the mobile terminal is handed over. The mobile terminal and handover method thereof are capable of transmitting the handover complete message repeatedly during a predetermined period, resulting in reduction of a probability of a handover failure.

Abstract: An apparatus and method for handover in a wireless communication system are provided. The method includes, upon handover execution, estimating a channel, controlling a transmission power of a Mobile Station (MS) depending on the channel estimation result, and transmitting a handover message using the controlled transmission power.

Abstract: A mobile terminal and a method to transmit a handover complete message in a handover process are provided. The handover method of the present invention includes determining, when a handover command message is received, a handover complete message transmission period, transmitting, when channel establishment information is received, a handover complete message during the handover complete message transmission period, and completing, when a handover complete message transmission period expires, handover to communicate with a base station to which the mobile terminal is handed over. The mobile terminal and handover method thereof are capable of transmitting the handover complete message repeatedly during a predetermined period, resulting in reduction of a probability of a handover failure.

Abstract: Provided is an apparatus and method for providing a call-processing service in a mobile terminal. The apparatus includes a circuit processor that provides a Circuit Service (CS), a packet processor that provides a Packet Service (PS), a period measuring unit that measures a delayed paging period in which a call-processing signal is detected while the PS is provided, and a monitoring unit that shifts the PS to a standby mode during the delayed paging period measured by the period measuring unit if the packet processor is in the process of receiving the PS, and controls the circuit process to provide the CS if the call-processing signal is received.

Abstract: A method for operating a Mobile Station (MS) for maintaining a Dual Transfer Mode (DTM) and apparatus for supporting the DTM for a handover process in a Global System for Mobile Communications (GSM) system are provided. The method includes receiving a broadcast control message from at least one neighbor cell, determining whether the at least one neighbor cell supports the DTM by using the broadcast control message, and reporting the determination result on whether the DTM is supported and a received signal measurement result. Accordingly, a DTM service can be seamlessly maintained.

Abstract: An apparatus and method for handover in a wireless communication system are provided. The method includes, upon handover execution, estimating a channel, controlling a transmission power of a Mobile Station (MS) depending on the channel estimation result, and transmitting a handover message using the controlled transmission power.

Abstract: Provided is an apparatus and method for providing a call-processing service in a mobile terminal. The apparatus includes a circuit processor that provides a Circuit Service (CS), a packet processor that provides a Packet Service (PS), a period measuring unit that measures a delayed paging period in which a call-processing signal is detected while the PS is provided, and a monitoring unit that shifts the PS to a standby mode during the delayed paging period measured by the period measuring unit if the packet processor is in the process of receiving the PS, and controls the circuit process to provide the CS if the call-processing signal is received.