Samsung Electronics Co., Ltd.

Samsung Electro-mechanics Co., Ltd.

Jin-Soo Jeong

Doo-hwan Lee

Jae-Kul Lee

Yul-Kyo Chung

Hwa-sun Park

Sang-Chul Lee

Sang-Jin Baek

Jong-Yun Lee

Pil-young Kim

A method of processing a cavity of a core substrate is disclosed. The method of processing a cavity of a core substrate in accordance with an embodiment of the present invention can include: forming a first processing area on one surface of a core substrate, the first processing area being demarcated by a circuit pattern; forming a second processing area on the other surface of the core substrate, the second processing area being demarcated by a circuit pattern; and processing a cavity by removing the entire first processing area from the one surface of the core substrate.

Method of processing cavity of core substrate

An electro device embedded printed circuit board and a manufacturing method thereof are disclosed. In accordance with an embodiment of the present invention, a printed circuit board embedded with an electro device, in which a pair of electrodes are formed on either end, includes: a core substrate in which a first cavity is formed; a first passive device embedded in the first cavity and being thinner than the core substrate; and a second passive device stacked on an upper side of the first passive device such that the second passive device is embedded in the first cavity. The first passive device and the second passive device are stacked to cross each other.

Electro device embedded printed circuit board and manufacturing method thereof

A method for controlling the hand-off of an MS (Mobile Station) for the home zone service in a mobile telecommunications system including a plurality of BTSs (Base Transceiver Stations), a BSC for controlling the BTSs, and an MSC (Mobile Switching Center) for connecting the BSC with a different BTS or network, comprising the steps of causing the MS to connect through the BTS with the BSC (Base Station Controller) by an outgoing or incoming call, causing the BSC to store the home zone list and the subscriber service class of the MS received from the MSC, and causing the BSC to perform the hand-off requested by the MS according to the home zone list and the subscriber service class. Thus, when the MS registered only in the fixed network, so as to be provided with communication services only in the home zone, travels through the other regions than the home zone, the BTS drops the presently connected call with an alert message. However, the MS registered both in the fixed and in the mobile network, so as to be provided with communication services both in the home zone and in the other regions, travels through the other regions, the BTS only sends an alert message to the MS without dropping the presently connected call. In this case, the BTS operator has discretion as to whether to send the alert message to the MS.

Method for controlling hand-off for home zone services in a mobile communications system

A method and a system are disclosed for controlling a pilot measurement request order for a soft swap handoff in a code division multiple access system. A preferred embodiment of the present invention comprises the steps of perceiving by a mobile station which is currently in communication with a first base transceiver station (BTS) a pilot signal strength which is above a predetermined threshold value, wherein the pilot signal is from a second BTS which is not currently in communication with the mobile station, reporting pilot signal strengths of the first BTS and of the second BTS through a pilot strength measurement message (PSMM) from the mobile station to a base station controller (BSC) if the mobile station perceives a pilot signal strength which is above a predetermined threshold value, informing the mobile station of reception of PSMM in order to prevent the mobile station from reporting unnecessary PSMM, checking whether the second BTS is corresponding to neighboring BTSs of the first BTS, ordering the mobile station to perform handoff, if the second BTS is corresponding to neighboring BTS, transmitting a pilot measurement request order (PMRO) from the BSC to the mobile station if the second BTS is not corresponding to neighboring BTS and reporting the strengths of all pilot signal receivable from BTSs through a pilot strength measurement message (PSMM) to the BSC after the mobile station waits for a predetermined action time upon reception of the PMRO.

Growing community of inventors

Seoul, South Korea

Jin-Soo Jeong