Patents by Inventor Dong-hwi Roh
Dong-hwi Roh 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: 11264714Abstract: A method and apparatus for beamforming in a wireless communication system are provided. The method of supporting beamforming in a wireless communication device includes detecting a direction change of the wireless communication device while communicating with a peer device. The method of supporting beamforming in a wireless communication device also includes adjusting a beam direction for communication with the peer device based on information indicating a direction change of the wireless communication device.Type: GrantFiled: August 31, 2018Date of Patent: March 1, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Ohyun Jo, Jae-Hwa Kim, Sang-Hyun Chang, Chang-Yeul Kwon, Dong-Hwi Roh, Ji-Sung Oh
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Patent number: 10530530Abstract: A method for transmitting data by a transmission node in a wireless communication system is provided. The method includes transmitting, to a base station, a channel information request, transmitting, to the base station, a data packet based on a first channel information value received in response to the transmitted channel information request, and awaiting reception of a response packet indicating reception of the data packet from the base station, if the reception of the response packet fails during a predetermined time interval, detecting an energy level of a signal received in the predetermined time interval, and reconfiguring one of a transmitting method for the response packet and a transmitting method for a next data packet based on the detected energy level.Type: GrantFiled: May 31, 2016Date of Patent: January 7, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-Won Kim, Hyun-Kyu Yu, Dong-Hwi Roh, Jeong-Ho Park, Jong-Ho Oh, Sung-Rok Yoon, Do-Young Jung
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Patent number: 10517000Abstract: An apparatus and a method for performing a beamforming operation in an access point (AP) in a millimeter Wave (mmWave) communication system are provided. The method includes transmitting a directional reference signal (RS) in an RS transmission (Tx) interval, and transmitting a training signal in an interval different from an interval during which the directional RS is transmitted in the RS Tx interval based on beamforming patterns supported in the AP, wherein a length of the training signal is shorter than a length of the directional RS. The apparatus and the method relate to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE).Type: GrantFiled: October 14, 2016Date of Patent: December 24, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-Hwi Roh, Ohyun Jo, Sung-Rok Yoon
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Patent number: 10291305Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to a method and an apparatus in a communication system. A method of a network node in the communication system comprises the steps of: measuring at least one factor value indicating channel link performance of a channel link between the network node and another network node; identifying a beamforming training scheme based on the at least one factor value; and performing beamforming training with the another network node by means of the selected beamforming training method, thereby finding an optimal beam for maintaining services through the most efficient method according to a channel state and minimizing the time consumed for beamforming training.Type: GrantFiled: November 5, 2014Date of Patent: May 14, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Ohyun Jo, Chang-Yeul Kwon, Jae-Hwa Kim, Dong-Hwi Roh, Hyun-Moo Kim, Dong-Hyuck Park, Jong-Ho Oh, Sung-Rok Yoon, Seok-Yong Lee, Sang-Hyun Chang, Do-Young Jung
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Publication number: 20180375559Abstract: A method and apparatus for beamforming in a wireless communication system are provided. The method of supporting beamforming in a wireless communication device includes detecting a direction change of the wireless communication device while communicating with a peer device. The method of supporting beamforming in a wireless communication device also includes adjusting a beam direction for communication with the peer device based on information indicating a direction change of the wireless communication device.Type: ApplicationFiled: August 31, 2018Publication date: December 27, 2018Inventors: Ohyun Jo, Jae-Hwa Kim, Sang-Hyun Chang, Chang-Yeul Kwon, Dong-Hwi Roh, Ji-Sung Oh
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Patent number: 10097252Abstract: A method and apparatus for beamforming in a wireless communication system are provided. The method of supporting beamforming in a wireless communication device includes detecting a direction change of the wireless communication device while communicating with a peer device. The method of supporting beamforming in a wireless communication device also includes adjusting a beam direction for communication with the peer device based on information indicating a direction change of the wireless communication device.Type: GrantFiled: November 20, 2014Date of Patent: October 9, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Ohyun Jo, Jae-Hwa Kim, Sang-Hyun Chang, Chang-Yeul Kwon, Dong-Hwi Roh, Ji-Sung Oh
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Patent number: 10028290Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments of the present invention provide an apparatus and method for adaptively selecting a beam based on a service and an environment in a wireless communication system supporting beamforming. According to an embodiment of the present invention, a method for operating a device capable of communicating with another device in a wireless communication system includes determining a type of service, determining an optimal beam based on the determined type of service, and beamforming by using the optimal beam. Various other embodiments of the present invention are also available.Type: GrantFiled: December 9, 2014Date of Patent: July 17, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Ohyun Jo, Chang-Yeul Kwon, Dong-Hwi Roh, Ji-Sung Oh
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Patent number: 9832745Abstract: Provided is a method of transmitting transport stream packets from a terminal connected to a network including generating a time stamp with reference to time information managed in synchronization with other terminals by a medium access control (MAC) layer in order to control medium use in the network; processing the transport stream packets by using the time stamp; and transmitting the processed transport stream packets.Type: GrantFiled: January 5, 2015Date of Patent: November 28, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chil-youl Yang, Scott Seong-wook Lee, Dong-hwi Roh
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Patent number: 9654276Abstract: A wireless local area network (WLAN) communication method and apparatus are provided. The WLAN communication method includes allowing a receiving station to receive a multi input multi output (MIMO) frame, allowing the receiving station to determine whether the MIMO frame is erroneous and whether the MIMO frame is destined for the receiving station, allowing the receiving station to generate a single input single output (SISO) acknowledgement (ACK) frame if the MIMO frame is not erroneous and is destined for the receiving station, and allowing the receiving station to transmit the SISO ACK frame to a sending station that has transmitted the MIMO frame.Type: GrantFiled: October 11, 2013Date of Patent: May 16, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chil-youl Yang, Chang-yeul Kwon, Jae-Hwa Kim, Dong-hwi Roh
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Publication number: 20170111806Abstract: An apparatus and a method for performing a beamforming operation in an access point (AP) in a millimeter Wave (mmWave) communication system are provided. The method includes transmitting a directional reference signal (RS) in an RS transmission (Tx) interval, and transmitting a training signal in an interval different from an interval during which the directional RS is transmitted in the RS Tx interval based on beamforming patterns supported in the AP, wherein a length of the training signal is shorter than a length of the directional RS. The apparatus and the method relate to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as a long term evolution (LTE).Type: ApplicationFiled: October 14, 2016Publication date: April 20, 2017Inventors: Dong-Hwi ROH, Ohyun JO, Sung-Rok YOON
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Publication number: 20160352625Abstract: A method for transmitting data by a transmission node in a wireless communication system is provided. The method includes transmitting, to a base station, a channel information request, transmitting, to the base station, a data packet based on a first channel information value received in response to the transmitted channel information request, and awaiting reception of a response packet indicating reception of the data packet from the base station, if the reception of the response packet fails during a predetermined time interval, detecting an energy level of a signal received in the predetermined time interval, and reconfiguring one of a transmitting method for the response packet and a transmitting method for a next data packet based on the detected energy level.Type: ApplicationFiled: May 31, 2016Publication date: December 1, 2016Inventors: Jae-Won KIM, Hyun-Kyu YU, Dong-Hwi ROH, Jeong-Ho PARK, Jong-Ho OH, Sung-Rok YOON, Do-Young JUNG
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Publication number: 20160323898Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments of the present invention provide an apparatus and method for adaptively selecting a beam based on a service and an environment in a wireless communication system supporting beamforming. According to an embodiment of the present invention, a method for operating a device capable of communicating with another device in a wireless communication system includes determining a type of service, determining an optimal beam based on the determined type of service, and beamforming by using the optimal beam. Various other embodiments of the present invention are also available.Type: ApplicationFiled: December 9, 2014Publication date: November 3, 2016Applicant: Samsung Electronics Co., Ltd.Inventors: Ohyun JO, Chang-Yeul KWON, Dong-Hwi ROH, Ji-Sung OH
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Publication number: 20160277087Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to a method and an apparatus in a communication system. A method of a network node in the communication system comprises the steps of: measuring at least one factor value indicating channel link performance of a channel link between the network node and another network node; identifying a beamforming training scheme based on the at least one factor value; and performing beamforming training with the another network node by means of the selected beamforming training method, thereby finding an optimal beam for maintaining services through the most efficient method according to a channel state and minimizing the time consumed for beamforming training.Type: ApplicationFiled: November 5, 2014Publication date: September 22, 2016Applicant: Samsung Electronics Co., Ltd.Inventors: Ohyun Jo, Chang-Yeul Kwon, Jae-Hwa Kim, Dong-Hwi Roh, Hyun-Moo Kim, Dong-Hyuck Park, Jong-Ho Oh, Sung-Rok Yoon, Seok-Yong Lee, Sang-Hyun Chang, Do-Young Jung
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Publication number: 20160224085Abstract: The present invention relates to a power consumption adjustment in an electronic apparatus capable of wirelessly connecting components with each other, and an operation of a peripheral device includes the steps of: detecting whether a contact occurs in at least one predetermined point of the peripheral device; and supplying power to at least one module located in the peripheral device. In addition; the present invention includes other embodiments excluding the above-mentioned embodiment.Type: ApplicationFiled: September 15, 2014Publication date: August 4, 2016Inventors: Ohyun JO, Chang-Yeul KWON, Dong-Hwi ROH
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Publication number: 20150138017Abstract: A method and apparatus for beamforming in a wireless communication system are provided. The method of supporting beamforming in a wireless communication device includes detecting a direction change of the wireless communication device while communicating with a peer device. The method of supporting beamforming in a wireless communication device also includes adjusting a beam direction for communication with the peer device based on information indicating a direction change of the wireless communication device.Type: ApplicationFiled: November 20, 2014Publication date: May 21, 2015Inventors: Ohyun Jo, Jae-Hwa Kim, Sang-Hyun Chang, Chang-Yeul Kwon, Dong-Hwi Roh, Ji-Sung Oh
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Publication number: 20150124799Abstract: Provided is a method of transmitting transport stream packets from a terminal connected to a network including generating a time stamp with reference to time information managed in synchronization with other terminals by a medium access control (MAC) layer in order to control medium use in the network; processing the transport stream packets by using the time stamp; and transmitting the processed transport stream packets.Type: ApplicationFiled: January 5, 2015Publication date: May 7, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chil-youl YANG, Scott Seong-wook LEE, Dong-hwi ROH
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Patent number: 8953580Abstract: Provided is a method of processing and transmitting transport stream packets and processing the transmitted transport stream packets. A time stamp is generated in a medium access control (MAC) layer based on time information managed by the MAC layer, and a data frame including the transport stream packets is retransmitted based on an algorithm different from that used for a general data frame when a transmission error occurs. Therefore, there is no need to transmit and receive additional synchronization packets in order to precisely transmit the transport stream packets between transmitting and receiving terminals, and it is possible to reduce performance deterioration caused by latency and jitter.Type: GrantFiled: March 30, 2007Date of Patent: February 10, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Chil-youl Yang, Scott Seong-wook Lee, Dong-hwi Roh
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Publication number: 20140036899Abstract: A wireless local area network (WLAN) communication method and apparatus are provided. The WLAN communication method includes allowing a receiving station to receive a multi input multi output (MIMO) frame, allowing the receiving station to determine whether the MIMO frame is erroneous and whether the MIMO frame is destined for the receiving station, allowing the receiving station to generate a single input single output (SISO) acknowledgement (ACK) frame if the MIMO frame is not erroneous and is destined for the receiving station, and allowing the receiving station to transmit the SISO ACK frame to a sending station that has transmitted the MIMO frame.Type: ApplicationFiled: October 11, 2013Publication date: February 6, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chil-youl YANG, Chang-yeul KWON, Jae-Hwa KIM, Dong-hwi ROH
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Patent number: 8594129Abstract: A wireless local area network (WLAN) communication method and apparatus are provided. The WLAN communication method includes allowing a receiving station to receive a multi input multi output (MIMO) frame, allowing the receiving station to determine whether the MIMO frame is erroneous and whether the MIMO frame is destined for the receiving station, allowing the receiving station to generate a single input single output (SISO) acknowledgement (ACK) frame if the MIMO frame is not erroneous and is destined for the receiving station, and allowing the receiving station to transmit the SISO ACK frame to a sending station that has transmitted the MIMO frame.Type: GrantFiled: April 7, 2006Date of Patent: November 26, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Chil-youl Yang, Chang-yeul Kwon, Jae-hwa Kim, Dong-hwi Roh
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Patent number: 8321734Abstract: A method of and an apparatus to improve stability and efficiency during data transmission performed over a wireless network includes transmitting a first data frame containing a plurality of data units to a receiving device, receiving from the receiving device a receipt of confirmation for each data unit received by the receiving device, and transmitting a second data frame containing at least one of the plurality of data units that have not been transmitted or received, according to the receipt of confirmation for each data unit received by the receiving device.Type: GrantFiled: August 14, 2006Date of Patent: November 27, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Chang-yeul Kwon, Se-young Shin, Seong-wook Lee, Dong-hwi Roh, Guoping Fan, Jae-moon Jo, Ho-seok Lee, Moon-young Choi, Joong-suk Park, Seung-seop Shim