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公开(公告)号：US11509594B2
公开(公告)日：2022-11-22
申请号：US16935672
申请日：2020-07-22
发明人： Sung-Hee Hwang , Hyun-Koo Yang
IPC分类号： H04L47/32 , H04N21/2662 , H04N21/2343 , H04N21/2383 , H04L1/00 , H04L69/329
摘要： The present invention relates to a method for transmitting a packet in a communication system, the method comprising: generating drop information indicating at least one source packet to be dropped among source packets to be transmitted and whether or not to drop each of the other source packets except the at least one source packet; performing forward error correction (FEC) encoding on the drop information and the other source packets except the at least one source packet; generating a repair packet comprising repair data for restoring the drop information and a repair symbol for restoring the other source packets except the at least one source packet; and transmitting the other source packets except the at least one source packet and the repair packet.
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公开(公告)号：US11146361B2
公开(公告)日：2021-10-12
申请号：US16851677
申请日：2020-04-17
发明人： Sung-Hee Hwang
IPC分类号： H04L1/00 , H03M13/27 , H03M13/29 , H03M13/35 , H04L12/26 , H04L29/06 , H03M13/11 , H03M13/15 , H03M13/23
摘要： A method for sending forward error correction (FEC) configuration information by a sending apparatus in a multimedia system is provided. The method includes sending source FEC configuration information for an FEC source packet to a receiving apparatus, wherein the source FEC configuration information includes information related to an FEC source or repair packet that is sent first among at least one FEC source or repair packet if an FEC source or repair packet block includes the at least one FEC source or repair packet.
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公开(公告)号：US10903921B2
公开(公告)日：2021-01-26
申请号：US15320542
申请日：2015-06-19
发明人： Hyun-Koo Yang , Sung-Hee Hwang , Young-Kwon Lim , Kyung-Mo Park , Sung-Oh Hwang
IPC分类号： H04H20/65 , H04H20/33 , H04H60/82 , H04N21/462 , H04H20/18 , H04L1/00 , H04N21/63 , H04N21/235 , H04N21/43 , H04H20/24
摘要： A method for providing a broadcast service, according to the present invention, comprises the steps of: if a broadcast service is provided by means of two or more networks, obtaining the maximum value among the fixed end-to-end delay of each network; and, on the basis of the maximum value, controlling an output point of a receiver which received packets of the broadcast service.
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公开(公告)号：US10715434B2
公开(公告)日：2020-07-14
申请号：US16428041
申请日：2019-05-31
发明人： Hyun-Koo Yang , Sung-Hee Hwang
IPC分类号： H04L12/741 , H04L12/721 , H04L29/08 , H04L29/06
摘要： A method of operating a transmitting apparatus in a multimedia system is provided. The method includes inputting at least one network layer packet, generating a link layer packet based on the at least one network layer packet, and transmitting the link layer packet, wherein the link layer packet includes a header including information indicating whether the link layer packet includes a single network layer packet and information indicating an identifier related to the at least one network layer packet.
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公开(公告)号：US10673990B2
公开(公告)日：2020-06-02
申请号：US16265228
申请日：2019-02-01
发明人： Hyun-Koo Yang , Kyung-Mo Park , Young-Wan So , Sung-Hee Hwang
IPC分类号： H04W56/00 , H04L29/06 , H04L12/721 , H04L29/08
摘要： A transmitting apparatus and an operating method for the apparatus in a multimedia system are provided. The operating method includes inputting at least one network layer packet, generating a link layer packet based on the at least one network layer packet, and transmitting the link layer packet. The link layer packet includes a header including information indicating a packet type of the at least one network layer packet, information indicating whether the link layer packet includes a single network layer packet, and information indicating an identifier related to the at least one network layer packet.
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公开(公告)号：US10341049B2
公开(公告)日：2019-07-02
申请号：US15129624
申请日：2015-03-30
发明人： Hyun-Koo Yang , Sung-Hee Hwang
摘要： The present invention relates to a method for generating, by a transmission device, a packet in a broadcasting and/or communication system, the method comprising the steps of: generating a first source symbol block consisting of one or more source symbols with the same length using a source packet block consisting of one or more source packets; performing a forward error correction (FEC) coding operation on the first source symbol block; generating a second source symbol block containing information about each source packet constituting the source packet block; and generating a second recovery symbol block with one or more recovery symbols by performing an FEC coding operation on the second source symbol block.
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公开(公告)号：US10270472B2
公开(公告)日：2019-04-23
申请号：US13650408
申请日：2012-10-12
发明人： Sung-Hee Hwang
摘要： An apparatus and method for transmitting/receiving a Forward Error Correction (FEC) packet in a mobile communication system are provided. In the FEC packet transmission method, an FEC packet transmission apparatus transmits an FEC delivery block to an FEC packet reception apparatus. The FEC delivery block includes N payloads. Each of the N payloads includes a payload header. Each payload header included in each of C payloads among the N payloads includes packet oriented header information and an FEC delivery block oriented header information fragment. The packet oriented header information is applied to a related payload, and the FEC delivery block oriented header information fragment is generated by fragmenting FEC delivery block oriented header information applied to the N payloads.
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8.发明授权公开(公告)号：US10230646B2
公开(公告)日：2019-03-12
申请号：US15320546
申请日：2015-06-22
发明人： Sung-Hee Hwang , Hyun-Koo Yang , Young-Kwon Lim , Kyung-Mo Park , Sung-Oh Hwang
IPC分类号： H04L12/853 , H04N19/66 , H04L1/00 , H04L12/18 , H04W88/06 , H04L12/927
摘要： The present invention provides a method and an apparatus for transmitting and receiving packets in a broadcast and communication system. The present invention comprises: generating a repair packet by encoding a source packet with an error correction code; and transmitting the source packet to a first network and transmitting the repair packet to a second network, wherein the number of repair packets is determined according to the maximum transmission delay values of the first and second networks.
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公开(公告)号：US09602403B2
公开(公告)日：2017-03-21
申请号：US14375317
申请日：2013-01-31
发明人： Sung-Hee Hwang , Kyung-Mo Park , Hyun-Koo Yang , Seho Myung , Sung-Oh Hwang
CPC分类号： H04L45/74 , H04L1/0007 , H04L1/004 , H04L1/0083 , H04L7/041 , H04L12/18 , H04L69/22 , H04L2007/045
摘要： A method and an apparatus for transmitting and receiving packets in a broadcasting system are provided. The present disclosure allocates a padding size field by using padding octets, and thus can increase transmission efficiency. Also, the present disclosure does not restrict the number of padding octets while maintaining compatibility with existing disclosures, and thus can carry out as much padding as desired and as necessary. In addition, the present disclosure variably allocates the padding size field depending on the number P of padding octets, and thus can increase header efficiency. Furthermore, since the number of padded octets in a header is immediately known, the size of an actual payload is known in advance, and thus rapid transmission is possible.
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公开(公告)号：US09450702B2
公开(公告)日：2016-09-20
申请号：US14811068
申请日：2015-07-28
发明人： Sung-Hee Hwang , Kyung-Mo Park , Hyun-Koo Yang
CPC分类号： H04L1/0041 , H04L1/004 , H04L1/0045 , H04L1/0057 , H04L1/0075 , H04L1/0083
摘要： A method for transmitting a packet in a communication system is provided. The method includes dividing a data stream into data payloads of a predetermined size and adding a common header to each of the data payloads, to generate a source payload, adding a first Forward Error Correction (FEC) payload Identifier (ID) to the source payload and applying an FEC code thereto, to generate an FEC source packet for a source payload, adding a second FEC payload ID to at least one parity payload and applying an FEC code thereto, to generate an FEC parity packet for the at least one parity payload, and transmitting the FEC source packet and the FEC parity packet.
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