Ying Yang Li

US Patent:

8107825, Jan 31, 2012

Filed:

Oct 12, 2009

Appl. No.:

12/577548

Inventors:

Sridhar Rajagopal - Plano TX, US
Ying Li - Garland TX, US

Assignee:

Samsung Electronics Co., Ltd. - Suwon-si

International Classification:

H04B 10/00

US Classification:

398172, 398189, 398197

Abstract:

A method and system for visible light communication (VLC) for use in a dimmable lighting environment is provided. The method includes transmitting data using light from at least one light source, a brightness of the light reduced below a maximum level. The method also includes compensating or accommodating for the reduced brightness of the light at a VLC circuitry to maintain communication. The method further includes transmitting data to at least one VLC receiver using the light from the at least one light source.

US Patent:

8204147, Jun 19, 2012

Filed:

May 19, 2010

Appl. No.:

12/783235

Inventors:

Kaushik Josiam - Dallas TX, US
Zhouyue Pi - Allen TX, US
Ying Li - Garland TX, US
Hwasun Yoo - Suwon-si, KR

Assignee:

Samsung Electronics Co., Ltd. - Suwon-si

International Classification:

H04L 27/00

US Classification:

375295, 455103, 370320

Abstract:

For use in a wireless communication network, a mobile station configured to determine a preamble sequence from a set of indexed preamble sequences by generating an index of the preamble sequence from a B-bit message is provided. The mobile station is configured to group the B bits of the message into n groups, each group having a substantially equal number of bits. The mobile station is also configured to generate a parity bit from each of the n groups. The mobile station is further configured to determine the index of the preamble sequence based on the n parity bits. The mobile station is still further configured to transmit the preamble sequence corresponding to the index of the preamble sequence. A base station configured to recover the B-bit message using the received signal from the mobile station is also provided.

US Patent:

8374201, Feb 12, 2013

Filed:

Aug 30, 2010

Appl. No.:

12/871770

Inventors:

Sridhar Rajagopal - Plano TX, US
Eun Tae Won - Seoul, KR
Ying Li - Garland TX, US

Assignee:

Samsung Electronics Co., ltd. - Suwon-si

International Classification:

H04J 3/00

US Classification:

370476

Abstract:

For use in visible light communication (VLC), methods for synchronization with multiple topology support and for transmitting an extended preamble. The method for synchronization includes transmitting a two-part preamble sequence. The preamble sequence includes one or more repetitions of a fast locking pattern (FLP) configured to be used for clock synchronization, and one or more repetitions of a topology dependent pattern (TDP) configured to be used to distinguish a plurality of VLC topologies. The method for transmitting an extended preamble includes generating an extended preamble and transmitting the extended preamble during a receive or idle mode for maintaining visibility support and for better synchronization performance.

US Patent:

8433345, Apr 30, 2013

Filed:

Jun 11, 2010

Appl. No.:

12/814068

Inventors:

Ying Li - Garland TX, US
Zhouyue Pi - Allen TX, US
Baowei Ji - Plano TX, US

Assignee:

Samsung Electronics Co., Ltd - Suwon-Si

International Classification:

H04W 68/00
H04B 7/00

US Classification:

455458, 455515

Abstract:

A first base station and mobile station are capable of mitigating interference resulting from communications from a second base station. The base station can determine if at least a portion of a paging slot overlaps with an available interval (AI) of the second base station in which the second base station transmits. The first base station adjusts an occurrence of the paging slot such that the paging slot overlaps and/or occurs within an unavailable interval (UAI) of the second base station wherein the base station does not transmit or transmits with limited resources. The mobile station also can determine if at least a portion of a listening slot overlaps with the AI and, using the same procedure that the first base station uses to recalculate the paging slot, recalculates the listening slot such that the listening slot overlaps and/or occurs within the UAI of the LDC mode.

US Patent:

8442539, May 14, 2013

Filed:

Feb 12, 2010

Appl. No.:

12/705019

Inventors:

Ying Li - Garland TX, US
Zhouyue Pi - Richardson TX, US

Assignee:

Samsung Electronics Co., Ltd. - Suwon-si

International Classification:

H04W 72/00
H04M 1/00
H04M 3/00

US Classification:

455444, 4554521, 4554531, 4555521, 455419

Abstract:

A Mobile Station (MS) apparatus and method, to search for a Base Station (BS) in a Low Duty Cycle (LDC) mode in a wireless communication system, and a network entity apparatus and method, assist or support the MS, are provided. The method for the MS to search for the BS in LDC mode in the wireless communication system includes obtaining LDC information of one or more BSs in LDC mode, determining the LDC patterns of the one or more BSs in LDC mode based on the LDC information, the LDC patterns comprising at least one of an Available Interval (AI), an UnAvailable Interval (UAI), a starting time of the AI, an ending time of the AI, a length of the AI, a starting time of the UAI, an ending time of the UAI, a length of the UAI, and a cycle of the LDC, searching for any of the one or more BSs in LDC mode during their respective AI, and if a BS is found, performing a follow-up operation based on the found BS.

US Patent:

8600393, Dec 3, 2013

Filed:

Sep 30, 2011

Appl. No.:

13/250429

Inventors:

Lingjia Liu - Allen TX, US
Guowang Miao - Plano TX, US
Ying Li - Garland TX, US
Jianzhong Zhang - Plano TX, US
Young-Han Nam - Richardson TX, US

Assignee:

Samsung Electronics Co. Ltd. - Suwon-Si

International Classification:

H04W 40/00

US Classification:

455446, 455 631, 455450, 455574, 455444, 370329

Abstract:

For use in a heterogeneous network, a method for enabling interference coordination includes, upon occurrence of a trigger condition, determining, at a first low power node, that the first low power node is approaching a second low power node. The method also includes sending, at the first low power node, an entering message to an evolved Node-B (eNB) that serves the first low power node. The method further includes receiving, at the first low power node, configuration information from the eNB to perform at least one measurement of the second low power node.

US Patent:

8606272, Dec 10, 2013

Filed:

Aug 30, 2010

Appl. No.:

12/871354

Inventors:

Ying Li - Garland TX, US
Anshuman Nigam - Karnataka, IN
Jung Je Son - Yongin-shi, KR
Zhouyue Pi - Richardson TX, US

Assignee:

Samsung Electronics Co., Ltd. - Suwon-si

International Classification:

H04W 4/02

US Classification:

4554352, 4554566

Abstract:

A method and a Mobile Station (MS), for use in a wireless communication network comprising a plurality of Base Stations (BSs) capable of communicating with a plurality of MSs, wherein at least some of the BSs are Femtocell BSs (FBSs) and at least some of the BSs are Macrocell BSs (MBSs), for identifying the BSs at the MS, are provided. The method includes receiving at least one of a globally unique BS ID and an Operator ID from an FBS via a Broadcast CHannel (BCH), deriving a Closed Subscriber Group IDentifier (CSG ID) from the received at least one of the globally unique BS ID and the Operator ID, and determining, based on the derived CSG ID, if the FBS is a CSG FBS to which the MS is subscribed.

US Patent:

8620154, Dec 31, 2013

Filed:

Jul 16, 2010

Appl. No.:

12/838240

Inventors:

Ying Li - Garland TX, US
Sridhar Rajagopal - Plano TX, US

Assignee:

Samsung Electronics Co., Ltd. - Suwon-Si

International Classification:

H04B 10/00
H04B 10/08

US Classification:

398 1, 398 2, 398 5, 398 17, 398118, 398127, 398172

Abstract:

A visible light communication (VLC) device is provided for use in a VLC system. The VLC device detect a trigger condition indicating a failure of a VLC link associated with first allocated resources used to communicate with a second VLC device. In response to the detection, the VLC device terminates on the first allocated resources transmission of data to the second VLC device and transmits a fast link recovery (FLR) signal using the first allocated resources. The VLC device receives a fast link recovery response (FLR RSP) signal indicating the second VLC device received the FLR signal and, in response, the VLC device resumes transmission of data to the second VLC device.