Eun Joo Kim

US Patent:

20210014694, Jan 14, 2021

Filed:

Jun 18, 2020

Appl. No.:

16/946361

Inventors:

- Suwon-si, KR
Hongbo Si - Plano TX, US
Eun Sun Kim - Austin TX, US

International Classification:

H04W 16/14
H04W 80/08
H04L 5/00
H04W 74/08
H04L 27/26

Abstract:

A method of a user equipment (UE) in a wireless communication system supporting a shared spectrum channel access is provided. The method comprises: receiving, from a base station (BS), a set of higher layer parameters including a subcarrier spacing of a physical random access channel (PRACH) preamble, a logical root index (i) for the PRACH preamble, and an index (zeroCorrelationZoneConfg); determining a sequence length (L) for the PRACH preamble based on the subcarrier spacing of the PRACH preamble; determining a physical root index (i) for the PRACH preamble based on the logical root index (i); determining a cyclic shift (N) for the PRACH preamble based on the index (zeroCorrelationZoneConfg); generating the PRACH preamble based on the determined sequence length L, the determined physical root index i, and the determined cyclic shift N; and transmitting, to the base station (BS) over the shared spectrum channel, the PRACH preamble.

US Patent:

20160310080, Oct 27, 2016

Filed:

Nov 20, 2015

Appl. No.:

14/947480

Inventors:

- LOS ANGELES CA, US
Hongyu Yu - Tempe AZ, US
Eun Sok Kim - Rancho Palos Verdes CA, US
Lisong Ai - Irvine CA, US

Assignee:

UNIVERSITY OF SOUTHERN CALIFORNIA - LOS ANGELES CA

International Classification:

A61B 5/00
B05D 7/00
A61B 5/0215
A61B 5/021
A61B 5/01
A61B 5/027

Abstract:

A flexible, polymer-based biosensor deployable into the arterial system which can assess shear stress in the arterial geometry in the presence of time-varying component of blood flow. Also, a method of fabricating a biosensor which may be used for in vivo procedures, involving the sequential depositing onto a substrate of a silicon dioxide layer, a metal heating element on the silicon dioxide layer, and a biocompatible polymer on the heating element, followed by etching the polymer layer to provide holes to allow for electrode contact with the heating element. A second metal layer is then deposited to form electrodes, followed by a second biocompatible polymer layer to form the device structure and removing the fabricated biosensor from the substrate by etching the substrate. In addition, a method of determining intravascular shear stress by measuring the temperature, flow rate and pressure of a bodily fluid with a biocompatible biosensor is disclosed.