A portable Internet analyzer having a handover test function, comprising: a transmission unit for encoding various DownLink signals of a serving Base Station and a target BS using a first preamble index, including a cell Identification assigned for the serving BS in advance in a form of a unique code in association with a handover test and a second preamble index including a cell ID assigned for the target BS in advance in a form of a unique code in association with the handover test, synthesizing the encoded signals, and sending the synthesized signals to a Portable Subscriber Station; a reception unit for receiving various UpLink signals from the PSS in association with the handover test, and decoding the UL signals using the cell Parameters of the serving BS and the target BS; a switching unit for selectively switching the transmission unit and the reception unit to the PSS for each of DL and UL sections of each frame; and a central control unit for generating various Media Access Control messages to be sent to the PSS through the transmission unit in association with the handover test, analyzing handover test-related MAC messages received through the reception unit, and controlling switching operation of the switching unit; wherein the transmission unit comprises: a serving BS signal generation unit for implementing a first physical layer algorithm performed in the serving BS in association with the handover test based on the first preamble index; and a target BS signal generation unit for implementing a second physical layer algorithm performed in the target BS in association with the handover test based on the second preamble index. a transmission unit for encoding various DownLink signals of a serving Base Station and a target BS using a first preamble index, including a cell Identification assigned for the serving BS in advance in a form of a unique code in association with a handover test and a second preamble index including a cell ID assigned for the target BS in advance in a form of a unique code in association with the handover test, synthesizing the encoded signals, and sending the synthesized signals to a Portable Subscriber Station; a reception unit for receiving various UpLink signals from the PSS in association with the handover test, and decoding the UL signals using the cell Parameters of the serving BS and the target BS; a switching unit for selectively switching the transmission unit and the reception unit to the PSS for each of DL and UL sections of each frame; and a central control unit for generating various Media Access Control messages to be sent to the PSS through the transmission unit in association with the handover test, analyzing handover test-related MAC messages received through the reception unit, and controlling switching operation of the switching unit; a serving BS signal generation unit for implementing a first physical layer algorithm performed in the serving BS in association with the handover test based on the first preamble index; and a target BS signal generation unit for implementing a second physical layer algorithm performed in the target BS in association with the handover test based on the second preamble index.