Patents by Inventor Zheda Li
Zheda Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12174287Abstract: Provided is a method for stably and flexibly performing ranging between a plurality of devices. According to an embodiment, a method of operating a first device for performing ranging by using ultra-wide band (UWB) may include: transmitting a first ranging control (RC) frame to a second device; performing ranging with the second device for a number of ranging rounds determined based on the first RC frame; changing at least one ranging parameter based on a change request received from the second device; and transmitting a second RC frame including the changed at least one ranging parameter.Type: GrantFiled: December 11, 2019Date of Patent: December 24, 2024Assignee: Samsung Electronics Co., LtdInventors: Mingyu Lee, Aditya Vinod Padaki, Zheda Li, Seongah Jeong
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Patent number: 12127135Abstract: Methods and apparatuses for data-driven uplink power control in a wireless network are described. In some embodiments, a network entity in a communication system supporting the uplink power control by the design of target signal-to-interference-plus-noise-ratio (TSIR) patterns for one or more cells in the target area, where the network entity comprises: a transceiver to receive reported traffic data from one or more cells in the target area; and a TSIR generation engine having one or more processors configured to automatically generate the one or more signal-to-interference-plus-noise-ratio (TSIR) patterns for the one or more cells of the target area in response to one or more trigger conditions, wherein the transceiver component is operable to transmit at least one of the one or more TSIR patterns to one or more cells in the target area.Type: GrantFiled: March 29, 2022Date of Patent: October 22, 2024Assignee: NTT DOCOMO, INC.Inventors: Zheda Li, Haralabos Papadopoulos, Chenwei Wang
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Publication number: 20240201779Abstract: Techniques for a dynamic radar mode modulation feature are described herein. A computer system associated with a device may implement a first radar configuration for a radar sensor. The first radar configuration may correspond to a first mode and comprise a first frame per second rate and a first difference threshold. The computer system may receive first data from the radar sensor in the first radar configuration. The computer system may determine a presence of an object within a field of view of the radar sensor based on the first data and the first difference threshold. The computer system may instruct the device to turn on based on determining the presence of the user. The radar sensor may be instructed to implement a second radar configuration associated with a second mode.Type: ApplicationFiled: December 15, 2022Publication date: June 20, 2024Inventors: Zheda Li, Morris Yuanhsiang Hsu, Vivek Yenamandra, Aditya V. Padaki, Raghunandan M Rao, Abhishek Sanaka, Rohit Kumar, Sai Prashanth Chinnapalli
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Patent number: 11943736Abstract: A method and apparatus of a first network entity in a wireless communication system is provide. The method and apparatus comprises: identifying at least one set of bit strings to generate a ranging scrambled timestamp sequence (STS); identifying at least one initialization vector (IV) field corresponding to the at least one set of bit strings, wherein the at least one IV field comprises a 4-octet string; generating a ranging STS key and IV information element (RSKI IE) that includes the at least one IV field to convey and align a seed that is used to generate the ranging STS; and transmitting, to a second network entity, the generated RSKI IE for updating the ranging STS of the second network entity.Type: GrantFiled: January 30, 2023Date of Patent: March 26, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: Zheda Li, Aditya V. Padaki, Boon Loong Ng
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Patent number: 11856256Abstract: This disclosure describes, in part, techniques for using presence detection in order to switch between power modes of a display device. For instance, the display device may operate in a first power mode by deactivating a display. While operating in the first power mode, the display device may use a sensor to detect a presence of a possible object. The display device may then switch to a second power mode in order to verify that the possible object is an actual object. In response, the display device may switch to a third power mode by at least activating the display and presenting a user interface using the display. The display device may then receive an interaction. In response, the display device may switch to a fourth power mode by at least presenting content.Type: GrantFiled: March 30, 2022Date of Patent: December 26, 2023Assignee: Amazon Technologies, Inc.Inventors: Zheda Li, Vivek Yenamandra, Aditya V Padaki, F N U Rohit Kumar, Morris Yuanhsiang Hsu, Sai Prashanth Chinnapalli
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Patent number: 11703585Abstract: A method and apparatus of a first network entity in a wireless communication system supporting ranging capability is provided. The method comprises: identifying, in a ranging block, one or more ranging rounds to transmit a ranging control message (RCM) and ranging ancillary data; generating the RCM including an advanced ranging control information element (ARC IE) that includes a ranging method field, wherein the ranging method field includes a value that indicates whether a ranging round following the RCM is used for ranging ancillary information exchange; transmitting, to a second network entity, the ranging ancillary data in the ranging round following the RCM when the value included in the ranging method field corresponds to ranging ancillary information exchange; and receiving, from the second network entity, an acknowledgement (ACK) corresponding to the ranging ancillary data.Type: GrantFiled: March 5, 2020Date of Patent: July 18, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Aditya V. Padaki, Zheda Li, Boon Loong Ng
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Patent number: 11693109Abstract: A method and apparatus a first network entity in a wireless communication system supporting ranging capability is provided. The method and apparatus comprises: identifying, in a ranging block, one or more ranging rounds to transmit a ranging control message (RCM) with a multiple message receipt confirmation request (MMRCR) for a transmission of at least one first message comprising at least one of a set of ranging messages or a set of ranging ancillary data messages; transmitting, to a second network entity, the RCM with the MMRCR; transmitting, to the second network entity, ranging ancillary data in at least one ranging round of one or more ranging rounds following the RCM, wherein the ranging ancillary data is associated with the MMRCR; and receiving, from the second network entity, a ranging multiple message receipt confirmation (RMMRC) corresponding to the transmission of the at least one first message.Type: GrantFiled: April 28, 2020Date of Patent: July 4, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Aditya V. Padaki, Zheda Li, Boon Loong Ng
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Publication number: 20230180176Abstract: A method and apparatus of a first network entity in a wireless communication system is provide. The method and apparatus comprises: identifying at least one set of bit strings to generate a ranging scrambled timestamp sequence (STS); identifying at least one initialization vector (IV) field corresponding to the at least one set of bit strings, wherein the at least one IV field comprises a 4-octet string; generating a ranging STS key and IV information element (RSKI IE) that includes the at least one IV field to convey and align a seed that is used to generate the ranging STS; and transmitting, to a second network entity, the generated RSKI IE for updating the ranging STS of the second network entity.Type: ApplicationFiled: January 30, 2023Publication date: June 8, 2023Inventors: Zheda Li, Aditya V. Padaki, Boon Loong Ng
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Patent number: 11632697Abstract: A method and apparatus of a first network entity in a wireless communication system supporting a ranging channel operation is provided. The method and apparatus comprises: identifying, at a higher layer, a RCPCS IE to indicate a sub-band to be selected for the ranging channel operation, wherein the RCPCS IE includes a CCI of a CCI timer; generating, at the higher layer, a MCPS-DATA.request primitive including the RCPCS IE, wherein the MCPS-DATA.request primitive is transmitted to a MAC layer; in response to receiving, at the MAC layer, the MCPS-DATA.request primitive from the higher layer, generate data including the RCPCS IE; transmitting, to a second network entity, the data including the RCPCS IE, wherein the RCPCS IE includes a CRCT that is configured as a duration for maintaining the sub-band; and receiving an acknowledgement corresponding to the data including the RCPCS IE.Type: GrantFiled: November 29, 2021Date of Patent: April 18, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Zheda Li, Seongah Jeong, Aditya V. Padaki, Mingyu Lee, Boon Loong Ng
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Patent number: 11617148Abstract: A method and apparatus of a first network entity in a wireless communication system is provide. The method and apparatus comprises: identifying at least one set of bit strings to generate a ranging scrambled timestamp sequence (STS); identifying at least one initialization vector (IV) field corresponding to the at least one set of bit strings, wherein the at least one IV field comprises a 4-octet string; generating a ranging STS key and IV information element (RSKI IE) that includes the at least one IV field to convey and align a seed that is used to generate the ranging STS; and transmitting, to a second network entity, the generated RSKI IE for updating the ranging STS of the second network entity.Type: GrantFiled: April 28, 2020Date of Patent: March 28, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Zheda Li, Aditya V. Padaki, Boon Loong Ng
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Patent number: 11546013Abstract: Provided are an electronic device that performs ranging by using an ultra wide-band (UWB) communication scheme and an operation method of the electronic device. The operation method of the first electronic device includes transmitting a first ranging control message (RCM) comprising interval information to a second electronic device, determining a first time to transmit a second RCM based on the interval information, determining a first RCM timing window (RTW) based on the first time, transmitting the second RCM to the second electronic device in the first RTW, and transmitting a third RCM at a second time in a second RTW, based on a failure to receive a response message corresponding to the second RCM within a specific time period in the first RTW, wherein the second time is a random time point in the second RTW.Type: GrantFiled: May 14, 2020Date of Patent: January 3, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Mingyu Lee, Kangjin Yoon, Seongah Jeong, Aditya Vinod Padaki, Zheda Li
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Patent number: 11536798Abstract: A method and transmit/receive apparatus in a wireless communication system supporting ranging capability are provided. The method and the transmit/receive apparatus comprises: identifying ranging apparatuses; identifying a ranging control message (RCM) including a ranging device management information element (RDM IE) and roles of the ranging apparatuses, the RDM IE including a content field, wherein the ranging apparatuses include the transmit apparatus and at least one receive apparatus; and transmitting, to the ranging apparatuses over a broadcast channel, the RCM including the RDM IE in a ranging round (RR).Type: GrantFiled: December 18, 2019Date of Patent: December 27, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Zheda Li, Aditya V. Padaki, Boon Loong Ng
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Patent number: 11516674Abstract: A method of a transmit apparatus in a wireless communication system supporting ranging capability is provided. The method comprises: determining at least one receive apparatus of a group of receive apparatuses participating in a ranging operation; identifying a scrambled timestamp sequence (STS) physical layer protocol data unit (PPDU) format 3 (SP3) ranging request reports information element (SRRR IE) for the at least one receive apparatus of the group of receive apparatuses; and transmitting, to the at least one receive apparatus of the group of receive apparatuses participating in the ranging operation, a ranging control message (RCM) including the SRRR IE using an in-band mechanism or an out-of-band mechanism, wherein the RCM including the SRRR IE is transmitted in a time-scheduled ranging operation.Type: GrantFiled: December 20, 2019Date of Patent: November 29, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Zheda Li, Aditya V. Padaki, Boon Loong Ng
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Publication number: 20220322242Abstract: Methods and apparatuses for data-driven uplink power control in a wireless network are described. In some embodiments, a network entity in a communication system supporting the uplink power control by the design of target signal-to-interference-plus-noise-ratio (TSIR) patterns for one or more cells in the target area, where the network entity comprises: a transceiver to receive reported traffic data from one or more cells in the target area; and a TSIR generation engine having one or more processors configured to automatically generate the one or more signal-to-interference-plus-noise-ratio (TSIR) patterns for the one or more cells of the target area in response to one or more trigger conditions, wherein the transceiver component is operable to transmit at least one of the one or more TSIR patterns to one or more cells in the target area.Type: ApplicationFiled: March 29, 2022Publication date: October 6, 2022Inventors: Zheda LI, Haralabos PAPADOPOULOS, Chenwei WANG
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Patent number: 11448751Abstract: A method of a transmit apparatus in a wireless communication system supporting ranging capability is provided. The method comprises: for a single-sided two-way ranging (SS-TWR), identifying a ranging round (RR) including a ranging initiation phase (RIP) for a set of transmit apparatuses including the transmit apparatus and a ranging response phase (RRP) for a set of receive apparatuses, wherein the RIP and the RRP comprise at least one slot; transmitting, to the set of receive apparatuses, a ranging initiation message in the RIP; and receiving, from one or more of the set of receive apparatuses, a ranging response message including information requested by the transmit apparatus in the RRP.Type: GrantFiled: November 27, 2019Date of Patent: September 20, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Zheda Li, Aditya V. Padaki, Boon Loong Ng
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Patent number: 11357042Abstract: A method of transmit apparatus in a wireless communication system supporting ranging capability is provided. The method comprises determining a beacon interval including a ranging management period and a ranging period, wherein the beacon interval is a variable interval, generating a beacon signal including information for a number of channel access slots corresponding to a ranging contention access period (RCAP) and a ranging contention free period (RCFP), transmitting, to a receive apparatus, the beacon signal at the determined beacon interval, and transmitting, to the receive apparatus, at least one channel access slot in the ranging management period.Type: GrantFiled: November 7, 2019Date of Patent: June 7, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Aditya V. Padaki, Zheda Li, Boon Loong Ng
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Publication number: 20220167218Abstract: A method and apparatus of a first network entity in a wireless communication system supporting a ranging channel operation is provided. The method and apparatus comprises: identifying, at a higher layer, a RCPCS IE to indicate a sub-band to be selected for the ranging channel operation, wherein the RCPCS IE includes a CCI of a CCI timer; generating, at the higher layer, a MCPS-DATA.request primitive including the RCPCS IE, wherein the MCPS-DATA.request primitive is transmitted to a MAC layer; in response to receiving, at the MAC layer, the MCPS-DATA.request primitive from the higher layer, generate data including the RCPCS IE; transmitting, to a second network entity, the data including the RCPCS IE, wherein the RCPCS IE includes a CRCT that is configured as a duration for maintaining the sub-band; and receiving an acknowledgement corresponding to the data including the RCPCS IE.Type: ApplicationFiled: November 29, 2021Publication date: May 26, 2022Inventors: Zheda Li, Seongah Jeong, Aditya V. Padaki, Mingyu Lee, Boon Loong Ng
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Publication number: 20220082676Abstract: Provided is a method for stably and flexibly performing ranging between a plurality of devices. According to an embodiment, a method of operating a first device for performing ranging by using ultra-wide band (UWB) may include: transmitting a first ranging control (RC) frame to a second device; performing ranging with the second device for a number of ranging rounds determined based on the first RC frame; changing at least one ranging parameter based on a change request received from the second device; and transmitting a second RC frame including the changed at least one ranging parameter.Type: ApplicationFiled: December 11, 2019Publication date: March 17, 2022Inventors: Mingyu LEE, Aditya Vinod PADAKI, Zheda LI, Seongah JEONG
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Patent number: 11212345Abstract: A method and apparatus of a network entity in a wireless communication system supporting ranging capability. The method includes generating a medium access control (MAC) common part sublayer-data request primitive including a ranging enable indicator and a ranging request measurement and control IE (RRMC IE) with a reply-time request. The RRMC IE includes request fields for a reply time, a round-trip measurement, a time-of-flight, an angle of arrival (AOA) azimuth, an AoA elevation, a ranging control information, a reserved bit, an RRMC table length, and an RRMC table. The method further includes transmitting MAC Data including the RRMC IE to another network entity and receiving MAC Data including a ranging reply time instantaneous IE from the other network entity. A local value of a receive ranging counter is identified at the network entity.Type: GrantFiled: March 5, 2020Date of Patent: December 28, 2021Assignee: Samsung Electronics Co., Ltd.Inventors: Zheda Li, Aditya V. Padaki, Boon Loong Ng
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Patent number: 11202248Abstract: A method and apparatus of a network entity in a wireless communication system supporting ranging capability is provided. The method and apparatus comprises: identifying a MAC sublayer management entity-receive-enable request (MLME-RX-ENABLE.request) primitive including a list of ranging scheduling time unit (RSTU) counter (RxOnTime) values and a number of RSTUs (RxOnDuration), wherein the MLME-RX-ENABLE.request primitive is sent to a MAC layer from a higher layer; in response to identifying the MLME-RX-ENABLE.request primitive, identifying a value of a MAC RSTU_COUNTER; determining whether the value of the MAC RSTU_COUNTER is set to an RxOnTime value included in the list of the RxOnTime values of the MLME-RX-ENABLE.request primitive; increasing the value of the MAC RSTU_COUNTER; determining whether a frame is received from another network entity based on the value of the MAC RSTU_COUNTER; and in response to determining that the frame is received, generating a MAC common part sublayer indication (MCPS-DATA.Type: GrantFiled: May 14, 2020Date of Patent: December 14, 2021Assignee: Samsung Electronics Co., Ltd.Inventors: Aditya V. Padaki, Zheda Li, Boon Loong Ng