Pantech Co., Ltd.

Apple Inc.

Pantech Corporation

Goldpeak Innovations Inc

R.f. Tech Co., Ltd.

Kyoung-min Park

Sungjun Yoon

KiTae Kim

Kitae Kim

Won Tae Kim

Min-Chul Kim

Min-Wook Kwon

Jun-Young Ko

Jung-Hoon Kim

Embodiments of the present invention relate to a wireless communication system, and more particularly, to a technology for allocating a Channel State Information-Reference Signal (CSI-RS) in a wireless communication system. Embodiments of the present invention provides an apparatus and method for allocating CSI-RSs to resource areas, in which, under the condition of a subframe in which the CP is an extended CP, and the duplex scheme is TDD, if CSI-RSs for maximum 8 antenna ports are allocated, the CSI-RSs are allocated to the 8th and 9th symbols (symbol No. l=7 and 8), wherein each CSI-RS for every two antenna ports is allocated to the same RE while being discriminated from each other by an orthogonal code and neighbor CSI-RS allocated REs in the frequency axis are spaced by an interval of three REs.

Apparatus and method for allocating channel state information-reference signal in wireless communication system

A method includes: determining a Cyclic Shift (CS) parameter that implicitly indicates an orthogonality allocation rule and orthogonality-related information, by determining a multiple access state of a User Equipment (UE), and transmitting the determined CS parameter to the UE, wherein the orthogonality-related information includes an Orthogonal Cover Code indicated by the CS parameter, the orthogonality allocation rule is determined as a uniform scheme or a non-uniform scheme according to the CS parameter, determining the CS parameter by which the non-uniform scheme is applied if the UE is in a Single User Multiple Input Multiple Output state, and determining the CS parameter by which the uniform scheme is applied if the UE is in a Multiple User Multiple Input Multiple Output state.

Apparatus and method for transmitting and receiving of cyclic shift parameter for supporting orthogonality in MIMO environment

The present invention provides an LED bulb using heat dissipating LED driver capable of reducing heat influence by disposing an electrolytic capacitor in an output part at a low temperature region through disposing a section receiving an external power close to a light generating module and disposing a section controlling a light emitting diode dose to a power source base.

LED bulb using heat dissipating LED driver

Apparatus and method for transmitting and receiving of cyclic shift parameter for supporting orthogonality in mimo environment

Growing community of inventors

Seoul, South Korea

Kyoung-min Park