Jung Y Choi

US Patent:

20120201153, Aug 9, 2012

Filed:

Nov 9, 2011

Appl. No.:

13/293072

Inventors:

Dinesh Bharadia - Stanford CA, US
Jung Il Choi - Santa Clara CA, US
Mayank Jain - Sunnyvale CA, US
Sachin Katti - Stanford CA, US
Tae Min Kim - Stanford CA, US
Philip Levis - San Francisco CA, US

International Classification:

H04B 15/00
H04W 24/02

US Classification:

370252, 370278

Abstract:

In one aspect there is provided a method. The method may include receiving a first analog radio frequency signal including a signal of interest and an interference signal caused by a second analog radio frequency signal transmitted in full duplex over a channel from which the first analog transmission is received; adjusting at least one of the first analog radio frequency signal and a portion of the second analog radio frequency signal to enable at least one of a reduction or an elimination of the interference signal in an output analog radio frequency signal; combining the first analog radio frequency signal and the portion of the second analog radio frequency signal to generate the output analog radio frequency signal characterized by at least the reduction or the elimination of the interference signal included in the output analog radio frequency signal; and providing the output analog radio frequency signal. Related apparatus, systems, methods, and articles are also described.

US Patent:

20120201173, Aug 9, 2012

Filed:

Nov 9, 2011

Appl. No.:

13/293069

Inventors:

Mayank Jain - Sunnyvale CA, US
Jung Il Choi - Santa Clara CA, US
Kannan Srinivasan - Dublin OH, US
Philip Levis - San Francisco CA, US
Sachin Katti - Stanford CA, US
Siddharth Seth - Stanford CA, US

International Classification:

H04B 15/00
H04W 4/00

US Classification:

370277

Abstract:

In one aspect there is provided a method. The method may include receiving a first analog radio frequency signal including a signal of interest and an interference signal caused by a second analog radio frequency signal transmitted in full duplex over a channel from which the first analog transmission is received; combining the first analog radio frequency signal and a portion of the second analog radio frequency signal to generate an output analog radio frequency signal characterized by at least a reduction or an elimination of the interference signal included in the output analog radio frequency signal; and providing the output analog radio frequency signal. Related apparatus, systems, methods, and articles are also described.

US Patent:

20190103804, Apr 4, 2019

Filed:

Sep 29, 2017

Appl. No.:

15/719997

Inventors:

- Campbell CA, US
- London, GB
Nebojsa Jelaca - Graz, AT
Kun Yang - Gilroy CA, US
Jung Woo Choi - Pleasanton CA, US

International Classification:

H02M 1/096
H03K 17/687
H03K 17/567
H02M 3/335
H02M 3/337

Abstract:

A circuit for driving a power switch is presented. The circuit includes a first power switch coupled to a second power switch via a switching node and a driver coupled to the first power switch, where the driver contains an energy storing element coupled to the switching node. The circuit also contains a sensor to sense an electrical parameter of the driver and a charger coupled to the sensor. The charger provides a charge current to charge the energy storage element, and to control the charge current based on the electrical parameter. In particular, a circuit for driving a power switch based on a III/V semiconductor is presented. In addition, a method of powering a power switch driver is presented. The method includes sensing an electrical parameter of the driver and adjusting a current to charge the energy storing element based on the electrical parameter.

US Patent:

20180206162, Jul 19, 2018

Filed:

Mar 16, 2018

Appl. No.:

15/923963

Inventors:

- Sunnyvale CA, US
AHMET MURAT PARLAKISIK - MILPITAS CA, US
JUNG SHIK CHOI - SUNNYVALE CA, US

International Classification:

H04W 36/08
H04W 24/10
H04W 72/04
H04W 8/22
H04W 12/06
H04W 92/12

Abstract:

Base stations as well as Radio Access Network (RAN) controllers have embedded communication agents that are responsible from control messaging between these entities that enable creation and management of RAN Slices. At a given time, it is possible that multiple active RAN slices co-exist on the same base station, where each RAN slice may run its own scheduler, its own admission control and have its own handoff management parameter values.

US Patent:

20180206163, Jul 19, 2018

Filed:

Mar 16, 2018

Appl. No.:

15/923994

Inventors:

- SUNNYVALE CA, US
AHMET MURAT PARLAKISIK - MILPITAS CA, US
JUNG SHIK CHOI - SUNNYVALE CA, US

International Classification:

H04W 36/08
H04W 24/10
H04W 72/04
H04W 8/22
H04W 12/06
H04W 92/12

Abstract:

Base stations as well as Radio Access Network (RAN) controllers have embedded communication agents that are responsible from control messaging between these entities that enable creation and management of RAN Slices. At a given time, it is possible that multiple active RAN slices co-exist on the same base station, where each RAN slice may run its own scheduler, its own admission control and have its own handoff management parameter values.