Patents by Inventor Byung-Chan Ahn
Byung-Chan Ahn 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: 11973960Abstract: A video encoding/decoding apparatus according to the present invention acquires motion vector refinement information, performs motion compensation on the basis of a motion vector of a current block, refines the motion vector of the current block using at least one or both of the motion vector refinement information and the output of the motion compensation, and performs motion compensation using the refined motion vector.Type: GrantFiled: June 9, 2022Date of Patent: April 30, 2024Assignee: INTELLECTUAL DISCOVERY CO., LTD.Inventors: Yong Jo Ahn, Dong Gyu Sim, Ho Chan Ryu, Seanae Park, Byung Tae Oh, Byung Cheol Song
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Patent number: 9848352Abstract: An apparatus and method reduce power consumption in a broadband wireless communication system. A transmitting end apparatus that includes a plurality of transmit (Tx) antennas includes a control block, a Processor (DSP) block, a modem block, and at least one power controller. The control block determines a traffic amount based on an amount of used resources. The Digital Signal Processor (DSP) block performs scheduling by using a subset of Tx antennas and a subset of resources on a frequency axis if the traffic amount is less than a threshold. The modem block applies boosting to a signal transmitted using the subset of resources. And at least one controller turns off an operation of at least one power amplifier that corresponds to at least one Tx antenna that is not included in the subset of Tx antennas.Type: GrantFiled: November 18, 2014Date of Patent: December 19, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Yun-Seok Choi, Seung-Joo Maeng, Byung Chan Ahn
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Patent number: 9166668Abstract: A system and method for adding a burst of a single-input multiple-output mode or collaborative spatial multiplexing mode to a frame in a spatial multiplexing system. A base station is configured to add a burst of a single-input multiple-output mode to a frame in a spatial multiplexing system. The system and method includes backing up a pilot pattern and a number of slots allocated for connections with terminals; releasing slots allocated for a burst; resetting a pilot pattern of a collaborative spatial multiplexing mode burst of the terminals: and recalculating the number of remaining slots; comparing the number of slots that can be additionally allocated to the single-input multiple-output mode with the number of slots released in the releasing step; and determining a transmission format.Type: GrantFiled: March 6, 2009Date of Patent: October 20, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Byung-Chan Ahn, Seung-Joo Maeng
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Publication number: 20150071379Abstract: An apparatus and method reduce power consumption in a broadband wireless communication system. A transmitting end apparatus that includes a plurality of transmit (Tx) antennas includes a control block, a Processor (DSP) block, a modem block, and at least one power controller. The control block determines a traffic amount based on an amount of used resources. The Digital Signal Processor (DSP) block performs scheduling by using a subset of Tx antennas and a subset of resources on a frequency axis if the traffic amount is less than a threshold. The modem block applies boosting to a signal transmitted using the subset of resources. And at least one controller turns off an operation of at least one power amplifier that corresponds to at least one Tx antenna that is not included in the subset of Tx antennas.Type: ApplicationFiled: November 18, 2014Publication date: March 12, 2015Inventors: Yun-Seok Choi, Seung-Joo Maeng, Byung Chan Ahn
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Patent number: 8953534Abstract: A method for avoiding interference of an interfering Base Station (BS) in an interfered BS of a mobile communication system includes determining an interference value of an interfering BS at a control region during a determination interval. When the interference value is greater than a threshold value, the method further includes operating in a modified Transmit/receive Transition Gap (TTG) mode. When the interference value is less than the threshold value, the method further includes operating in a general TTG mode.Type: GrantFiled: January 31, 2012Date of Patent: February 10, 2015Assignee: Samsung Electronics Co. Ltd.Inventors: Ki-Seob Hong, Sung-Han Lee, Il-Jin Youn, Jae-Hee Cho, Byung-Chan Ahn
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Patent number: 8891649Abstract: An apparatus and method reduce power consumption in a broadband wireless communication system. A transmitting end apparatus that includes a plurality of transmit (Tx) antennas includes a control block, a Processor (DSP) block, a modem block, and at least one power controller. The control block determines a traffic amount based on an amount of used resources. The Digital Signal Processor (DSP) block performs scheduling by using a subset of Tx antennas and a subset of resources on a frequency axis if the traffic amount is less than a threshold. The modem block applies boosting to a signal transmitted using the subset of resources. And at least one controller turns off an operation of at least one power amplifier that corresponds to at least one Tx antenna that is not included in the subset of Tx antennas.Type: GrantFiled: April 13, 2011Date of Patent: November 18, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Yun-Seok Choi, Seung-Joo Maeng, Byung Chan Ahn
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Patent number: 8886199Abstract: An apparatus and a method control interference via inter-base station information exchange in a communication system. In a method for operating a serving base station, for controlling interference in a communication system, sum of yield loss amounts of terminals inside a neighbor base station by a power level rise of the serving base station is determined. Yield gain amounts of serving terminals by the power level rise of the serving base station are determined. The sum of the yield loss amounts of the terminals inside the neighbor base station by the power level rise of the serving base station is compared with the determined yield gain amounts of the serving terminals by the power level rise of the serving base station, so that a power level for each serving terminal is determined.Type: GrantFiled: January 27, 2012Date of Patent: November 11, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Nam-Koo Kang, Jae-Hee Cho, Byung-Chan Ahn
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Patent number: 8879480Abstract: A method and base station are provided for allocating a Hybrid Automatic Repeat Request (HARQ) channel according to service flow types. The method allocates a DownLink (DL) HARQ channel by a base station to a mobile station which can be provided with data corresponding to at least one Service Flow (SF) in a wireless communication system. At least one of a plurality of HARQ channels is mapped to a first SF. It is determined whether to allocate the mapped at least one HARQ channel as a dedicated HARQ channel of the first SF based on whether traffic of the first SF exists in a transmission queue corresponding to the first SF. Therefore, dedicated HARQ channels for a delay intolerant SF, such as a Voice over Internet Protocol (VoIP) SF, can be managed without loss of a maximum throughput for a delay tolerant SF such as a Best Effort (BE) SF.Type: GrantFiled: January 25, 2011Date of Patent: November 4, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Pil-Jae Moon, Byung-Chan Ahn
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Patent number: 8812044Abstract: An apparatus and a method for controlling a data transmission rate in a broadband wireless communication system are provided. In the method, an interference factor representing an interference degree by an external sector is measured. Interference given to the external sector is estimated using the interference factor, an interference weight depending on a location of a terminal, and an amount of wireless resource use of a self sector. A data transmission rate is determined with consideration of an interference estimation value and a wireless channel state of the terminal.Type: GrantFiled: November 24, 2009Date of Patent: August 19, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Ki-Seob Hong, Byung-Chan Ahn, Seung-Joo Maeng, Yun-Jik Jang
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Patent number: 8565173Abstract: A method and an apparatus for resource allocation scheduling in a wireless communication system are provided. The apparatus includes a scheduler for, if an UpLink (UL) scheduling for scheduling an allocation order of UL resources is performed prior to a DownLink (DL) scheduling for scheduling an allocation order of DL resources, setting a size ? representing a size in which a DL burst region is maximally allocated in a DL sub frame, for, if the DL scheduling is performed prior to the UL scheduling, setting a size ? representing a size in which the DL burst region is maximally allocated in the DL sub frame, for determining whether to discard a DL Medium Access Control (MAC) management message to be transmitted by using the size ?, and for, if it is not determined to discard the DL MAC management message, determining a priority of a DL scheduling and a UL scheduling by using the size ? and first performing one of the DL scheduling and the UL scheduling in accordance with the determined priority.Type: GrantFiled: February 8, 2011Date of Patent: October 22, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Hye-Mi Park, Jeong-Heon Kim, Byung-Chan Ahn, Won-Young Park, Sung-Ha Kim, Seung-Joo Maeng
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Patent number: 8565778Abstract: An apparatus and method for uplink scheduling in a broadband wireless communication system are provided, in which channel conditions are divided into at least two areas, an area corresponding to channel information of a CSM mobile station received from the CSM mobile station is determined, resources of a first pilot pattern are allocated to the CSM mobile station, if the channel information belongs to an area with good channel condition, and resources of a second pilot pattern are allocated to the CSM mobile station, if the cannel information belongs to an area with poor channel condition.Type: GrantFiled: February 5, 2008Date of Patent: October 22, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Jang-Won Park, Il-Jin Youn, Byung-Chan Ahn, Jae-Ho Lee, Soo-Yeul Oh
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Patent number: 8509697Abstract: An apparatus and a method for controlling uplink interference in a wireless communication system. The method for controlling the uplink interference includes determining at least one interference signal power threshold determined by at least one neighbor Base Station (BS). The method also includes determining a transmit power offset for at least one serviced Mobile Station (MS) using the at least one interference signal power threshold. The method further includes sending the transmit power offset for the at least one MS to the at least one MS.Type: GrantFiled: March 8, 2011Date of Patent: August 13, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Ki-Seob Hong, Byung-Chan Ahn, Hyun-Woo Lee, Seung-Joo Maeng
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Patent number: 8396511Abstract: An apparatus and method in a broadband wireless communication system are provided. The apparatus includes a Base Station (BS) which includes a manager for increasing a set point associated with a Mobile Station (MS) if an error is detected in a burst received from the MS, a detector for incrementing a counter associated with the MS if a difference, between a maximum Transmission (Tx) power of the MS and a Tx power used by the MS when transmitting the burst in which the error was detected, is less than a difference threshold, and a determining unit for providing control such that a number of slots allocated to the MS decreases if the counter associated with the MS is greater than a counter threshold.Type: GrantFiled: February 27, 2008Date of Patent: March 12, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Byung-Chan Ahn, Jang-Won Park, Young-Soon Lee, Eun-Jin Lee, Soo-Yeul Oh
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Patent number: 8265620Abstract: An apparatus for use in a base station capable of checking whether a frequency is illegally used in a wireless communication system are provided. Operations of the base station for checking whether the frequency is illegally used includes setting a silence interval in which a resource is not allocated to a terminal, using silence interval setting information provided from a system manager; when the silence interval arrives, measuring RSSI; and transmitting the RSSI to the system manager to examine at least one of a frequency illegal use and a reception path error using the RSSI.Type: GrantFiled: February 1, 2010Date of Patent: September 11, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Ki-Seob Hong, Seung-Joo Maeng, Byung-Chan Ahn
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Publication number: 20120196642Abstract: An apparatus and a method control interference via inter-base station information exchange in a communication system. In a method for operating a serving base station, for controlling interference in a communication system, sum of yield loss amounts of terminals inside a neighbor base station by a power level rise of the serving base station is determined. Yield gain amounts of serving terminals by the power level rise of the serving base station are determined. The sum of the yield loss amounts of the terminals inside the neighbor base station by the power level rise of the serving base station is compared with the determined yield gain amounts of the serving terminals by the power level rise of the serving base station, so that a power level for each serving terminal is determined.Type: ApplicationFiled: January 27, 2012Publication date: August 2, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Nam-Koo Kang, Jae-Hee Cho, Byung-Chan Ahn
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Publication number: 20120195272Abstract: A method for avoiding interference of an interfering Base Station (BS) in an interfered BS of a mobile communication system includes determining an interference value of an interfering BS at a control region during a determination interval. When the interference value is greater than a threshold value, the method further includes operating in a modified Transmit/receive Transition Gap (TTG) mode. When the interference value is less than the threshold value, the method further includes operating in a general TTG mode.Type: ApplicationFiled: January 31, 2012Publication date: August 2, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ki-Seob Hong, Sung-Han Lee, Il-Jin Youn, Jae-Hee Cho, Byung-Chan Ahn
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Publication number: 20110268065Abstract: An apparatus and a method for scheduling resources in a wireless communication system are provided. A Modulation and Coding Scheme (MCS) level of resource allocation information of one or more terminals is determined. A temporary MCS level for resource allocation information of a frame is determined by considering an MCS level for resource allocation information of a k-th terminal of the set of terminals. A resource amount for allocating data is determined by considering the temporary MCS level. Whether a resource is allocable to the k-th terminal is determined by considering the resource amount for the data allocation. And when the resource is allocable to the k-th terminal, the MCS level of the resource allocation information of the frame is determined by considering the MCS level of the resource allocation information of the k-th terminal.Type: ApplicationFiled: May 3, 2011Publication date: November 3, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hye-Mi Park, Jae-Ho Jeon, Byung-Chan Ahn, Nam-Koo Kang
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Publication number: 20110249715Abstract: An apparatus and method reduce power consumption in a broadband wireless communication system. A transmitting end apparatus that includes a plurality of transmit (Tx) antennas includes a control block, a Processor (DSP) block, a modem block, and at least one power controller. The control block determines a traffic amount based on an amount of used resources. The Digital Signal Processor (DSP) block performs scheduling by using a subset of Tx antennas and a subset of resources on a frequency axis if the traffic amount is less than a threshold. The modem block applies boosting to a signal transmitted using the subset of resources. And at least one controller turns off an operation of at least one power amplifier that corresponds to at least one Tx antenna that is not included in the subset of Tx antennas.Type: ApplicationFiled: April 13, 2011Publication date: October 13, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun-Seok Choi, Seung-Joo Maeng, Byung Chan Ahn
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Publication number: 20110218002Abstract: An apparatus and a method for controlling uplink interference in a wireless communication system. The method for controlling the uplink interference includes determining at least one interference signal power threshold determined by at least one neighbor Base Station (BS). The method also includes determining a transmit power offset for at least one serviced Mobile Station (MS) using the at least one interference signal power threshold. The method further includes sending the transmit power offset for the at least one MS to the at least one MS.Type: ApplicationFiled: March 8, 2011Publication date: September 8, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ki-Seob Hong, Byung-Chan Ahn, Hyun-Woo Lee, Seung-Joo Maeng
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Publication number: 20110194512Abstract: A method and an apparatus for resource allocation scheduling in a wireless communication system are provided. The apparatus includes a scheduler for, if an UpLink (UL) scheduling for scheduling an allocation order of UL resources is performed prior to a DownLink (DL) scheduling for scheduling an allocation order of DL resources, setting a size ? representing a size in which a DL burst region is maximally allocated in a DL sub frame, for, if the DL scheduling is performed prior to the UL scheduling, setting a size ? representing a size in which the DL burst region is maximally allocated in the DL sub frame, for determining whether to discard a DL Medium Access Control (MAC) management message to be transmitted by using the size ?, and for, if it is not determined to discard the DL MAC management message, determining a priority of a DL scheduling and a UL scheduling by using the size ? and first performing one of the DL scheduling and the UL scheduling in accordance with the determined priority.Type: ApplicationFiled: February 8, 2011Publication date: August 11, 2011Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Hye-Mi PARK, Jeong-Heon KIM, Byung-Chan AHN, Won-Young PARK, Sung-Ha KIM, Seung-Joo MAENG