Abstract: The present invention relates to a method of transmitting data using adaptive coding scheme, which changes channel coding rate of transport blocks (TBs) adaptively in accordance with channel transmission conditions, at physical layer of asynchronous mobile communication system such as W-CDMA or IMT-2000 in order to achieve effective data transmission, and relates to a base station using the method. This method is to apply to a physical layer of an asynchronous mobile communication system where a SRNC consisting of a media access control (MAC) layer and radio link control (RLC) for transmitting channel data and a base station, connected to the SRNC with a wired interface, consisting of the physical layer being in charge of actual data transmission are included.

Abstract: The present invention relates to a method of supporting proper hand-off of a dual-mode mobile terminal based on terminal capability and communication status to guarantee continuous mobility in a mixed communication network where a synchronous and an asynchronous network system coexist. According to the present invention, a dual-mode terminal transmits information of its terminal capability operable in both the synchronous and the asynchronous network system to the mixed communication network, irrespective of which network system a present service area belongs to, then the mixed communication network constructs information on adjacent cells, which are selectively included based on the received terminal capability information, of the other network system and provides the dual-mode terminal with the constructed adjacent cell information.

Abstract: A handover method in wireless telecommunication system supporting USTS is disclosed. The method for performing a handover of a mobile station in an asynchronous wireless telecommunication system supporting an uplink synchronous transmission scheme (USTS) mode, includes the steps of: a) performing a mode conversion of the mobile station from the USTS mode to a non-USTS mode based on a first signal measurement result from the mobile station; and b) performing a handover for the mobile station. In another embodiment of the present invention, the method further includes the step of: c) performing a mode conversion from the non-USTS mode to the USTS mode based on a second signal measurement result from the mobile station.

Abstract: A macro-micro cell structure of wireless communication system for separately processing a forward and a reverse telecommunications in order to increase a reverse link capacity is disclosed. The wireless telecommunication system has a macro cell and at least one micro cell within the macro cell. A micro cell signal processing unit processes a transmission and reception signal of a mobile station located at a service region of the micro cell. A micro cell base station transmits a micro cell forward signal provided from said micro cell signal processing unit to the mobile station to receive a micro cell reverse signal, and receives a macro cell reverse signal of the mobile station which is located at the macro cell and has a short wave path contrast to the macro cell. A macro cell signal processing unit transmits a forward signal to the mobile station through a macro cell antenna and processes the reverse signal provided from said macro cell antenna or said micro cell base station.

Abstract: The present invention relates to a method of supporting proper hand-off of a dual-mode mobile terminal based on terminal capability and communication status to guarantee continuous mobility in a mixed communication network where a synchronous and an asynchronous network system coexist. According to the present invention, a dual-mode terminal transmits information of its terminal capability operable in both the synchronous and the asynchronous network system to the mixed communication network, irrespective of which network system a present service area belongs to, then the mixed communication network constructs information on adjacent cells, which are selectively included based on the received terminal capability information, of the other network system and provides the dual-mode terminal with the constructed adjacent cell information.

Abstract: A handover method in wireless telecommunication system supporting USTS is disclosed. The method for performing a handover of a mobile station in an asynchronous wireless telecommunication system supporting an uplink synchronous transmission scheme (USTS) mode, includes the steps of: a) performing a mode conversion of the mobile station from the USTS mode to a non-USTS mode based on a first signal measurement result from the mobile station; and b) performing a handover for the mobile station. In another embodiment of the present invention, the method further includes the step of: c) performing a mode conversion from the non-USTS mode to the USTS mode based on a second signal measurement result from the mobile station.

Abstract: The present invention relates to a method of transmitting data using adaptive coding scheme, which changes channel coding rate of transport blocks (TBs) adaptively in accordance with channel transmission conditions, at physical layer of asynchronous mobile communication system such as W-CDMA or IMT-2000 in order to achieve effective data transmission, and relates to a base station using the method. This method is to apply to a physical layer of an asynchronous mobile communication system where a SRNC consisting of a media access control (MAC) layer and radio link control (RLC) for transmitting channel data and a base station, connected to the SRNC with a wired interface, consisting of the physical layer being in charge of actual data transmission are included.

Abstract: A CDMA (Code Division Multiple Access) modulation and demodulation method and a communication system using the same which simultaneously transmits a pilot signal and a data signal through the same channel, thereby being capable of not only greatly the complexity of its transceiver, but also achieving an improvement in performance where a large number of multipaths are used.

Abstract: A rake receiving apparatus used in communication systems using a DS/CDMA (direct sequence code division multiple access) system, wherein a single demodulating finger is used for a plurality of multipath signals, thereby being capable of not only greatly reducing the complexity of its demodulators, but also achieving an improvement in performance where a large number of multipaths are used.