Myung Ok Lee

US Patent:

8081583, Dec 20, 2011

Filed:

Jul 11, 2008

Appl. No.:

12/171913

Inventors:

Jae Hong Ruy - Daejeon, KR
Jong Suk Chae - Daejeon, KR
Cheol Sig Pyo - Daejeon, KR
Bong Soo Kim - Daejeon, KR
Eun Ju Lee - Daejeon, KR
Myung Jong Lee - Paramus NJ, US
Tae Rim Park - New York NY, US
Rui Zhang - New York NY, US

Assignee:

Electronics & Telecommunications Research Institute - Daejeon
Research Foundation of the City University of New York - New York NY

International Classification:

H04L 12/26

US Classification:

370256

Abstract:

Provided is a method of supporting node portability in a sensor network, wherein data transmission to a portable node can be guaranteed since even when the portable node is assigned with a different address by being associated with another network, the newly assigned address is transmitted to a parent node or a sink node that was previously associated with the portable node.

US Patent:

8126005, Feb 28, 2012

Filed:

Aug 3, 2007

Appl. No.:

11/833655

Inventors:

Tae Rim Park - New York NY, US
Myung Jong Lee - New York NY, US
Ji Tae Kim - Yongin-si, KR

Assignee:

Samsung Electronics Co., Ltd. - Suwon-si

International Classification:

H04J 3/17

US Classification:

370433, 370329, 370431, 370458, 370459

Abstract:

A communication apparatus, wherein the communication apparatus selects a superframe from W consecutive superframes, and starts each of the W consecutive superframes without transmitting a beacon in a first time period of each of the W consecutive superframes when a superframe to be started is different from the selected superframe.

US Patent:

7995508, Aug 9, 2011

Filed:

Jul 11, 2008

Appl. No.:

12/171657

Inventors:

Jae Hong Ruy - Daejeon, KR
Jong Suk Chae - Daejeon, KR
Cheol Sig Pyo - Daejeon, KR
Bong Soo Kim - Daejeon, KR
Myung Jong Lee - Paramus NJ, US
Tae Rim Park - New York NY, US

Assignee:

Electronics & Telecommunications Research Institute - Daejeon
Research Foundation of the City University of New York - New York NY

International Classification:

H04W 52/02

US Classification:

370311, 455574, 4553432

Abstract:

Provided is a method of minimizing power consumed by each node in a wireless network when communicating with neighboring nodes. Unlike a conventional synchronous media access control (MAC), the present invention suggests an asynchronous MAC. Thus, the active duration of a node extends only when transmitting a large quantity of data and the extended active duration returns to the minimum active duration again after completing the data transmission.

US Patent:

20080031308, Feb 7, 2008

Filed:

Jan 25, 2007

Appl. No.:

11/657474

Inventors:

Ji Tae Kim - Yongin-si, KR
Jianliang Zheng - New York NY, US
Myung Jong Lee - New York NY, US

Assignee:

SAMSUNG ELECTRONICS CO., LTD. - Suwon-si

International Classification:

H04B 1/00

US Classification:

375142, 375148, 375150

Abstract:

A communication apparatus includes an antenna which receives data frames from transmitters; at least one correlator, each of which is associated with a single identification code and detects a frame corresponding to the identification code from the data frames; and a reserved correlator which detects an acknowledge (ACK) frame from the transmitters corresponding to at least one correlator.

US Patent:

20080031391, Feb 7, 2008

Filed:

Aug 3, 2007

Appl. No.:

11/833742

Inventors:

Jae HO ROH - Seoul, KR
Baozhi CHEN - New York NY, US
Myung Jong LEE - New York NY, US

Assignee:

SAMSUNG ELECTRONICS CO., LTD. - Suwon-si

International Classification:

H04B 7/08

US Classification:

375347

Abstract:

A receiving apparatus for retransmission diversity includes: a sum module generating a second signal by summing up a first signal and at least one retransmitted signal of the first signal, when a first packet determined by the first signal received from a transmitter is incorrect; and a controller requesting the transmitter to retransmit the first signal when a second packet, which has been determined from the second signal, is incorrect.

US Patent:

20100034159, Feb 11, 2010

Filed:

Jul 10, 2009

Appl. No.:

12/501024

Inventors:

Chang Sub SHIN - Daejeon-city, KR
Seong Soon Joo - Daejeon-city, KR
Jong Suk Chae - Daejeon-city, KR
Wun Cheol Jeong - Daejeon-city, KR
Jae Hong Ruy - Daejeon-city, KR
Myung Jong Lee - New York NY, US
Tae Rim Park - New York NY, US

Assignee:

Electrics and Telecommunications Research Institute - Daejeong-city
Research Foundation of the city University of New York - New York NY

International Classification:

H04W 72/04

US Classification:

370329

Abstract:

A medium access control (MAC) technique of a multihop sensor network. In the multihop sensor network, the MAC technique may contribute to significantly reducing transmission delay, and allow real-time services to be provided to all nodes by extending a guaranteed time slot (GTS) restricted to one hop in a personal area network (PAN) coordinator (PNC) to all nodes. Furthermore, the MAC technique may allow the number of available GTSs to be significantly increased, by using all 16 frequency band channels instead of using only a single frequency band and setting a multi-superframe.

US Patent:

20100278156, Nov 4, 2010

Filed:

May 4, 2010

Appl. No.:

12/773646

Inventors:

Chang Sub Shin - Daejeon, KR
Wun Cheol Jeong - Daejeon, KR
Seong Soon Joo - Daejeon, KR
Jong Suk Chae - Daejeon, KR
Myung Jong Lee - New York NY, US
June Seung Yoon - New York NY, US
Gahng Seop Ahn - New York NY, US

International Classification:

H04B 7/212
H04W 4/00

US Classification:

370337, 370328

Abstract:

There is provided a data communication method using a body area network superframe including an advertisement period, a contention medium access period, a beacon period, and a data transmit period, the data communication method including: broadcasting, by a coordinator node, predetermined information during the advertisement period; transmitting, by nodes, which wish to transmit data, the data only when carrier is not in use as a result of sensing the carrier after the contention medium access period is initiated and a predetermined backoff time elapses; broadcasting, by each of the nodes, periodic beacon signals during the beacon period; and transmitting, by each of the nodes, continuous data and periodic data during the data transmit period

US Patent:

20100284334, Nov 11, 2010

Filed:

May 7, 2010

Appl. No.:

12/776358

Inventors:

Chang Sub Shin - Daejeon, KR
Wun Cheol Jeong - Daejeon, KR
An Seok Lee - Gyeongbuk, KR
Seong Soon Joo - Daejeon, KR
Jong Suk Chae - Daejeon, KR
Myung Jong Lee - New York NY, US
Gahng Seop Ahn - New York NY, US
Jun Sun Ryu - New York NY, US

Assignee:

Electronics and Telecommunications Research Institute - Daejeon
City University of New York - New York NY

International Classification:

H04W 40/00

US Classification:

370328

Abstract:

There is provided an asynchronous multi-channel adaptation method. An asynchronous multi-channel adaptation method according to an aspect of the invention may include: a channel scanning operation in which a new node, participating in a wireless ad-hoc network, scans channels and selects a receiving channel thereof; and a receiving channel information transmission operation in which the new node transmits information on the selected receiving channel thereof to a neighboring node.