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公开(公告)号：US11336401B2
公开(公告)日：2022-05-17
申请号：US16823322
申请日：2020-03-18
Inventor： Seok-Ki Ahn , Sung-Ik Park , Jae-Hyun Seo
Abstract: Disclosed herein are a method of retransmission for downlink transmission of a wireless communication system and an apparatus for the same. The method includes receiving multiple feedback signals corresponding to a transmission failure from multiple terminals corresponding to point-to-multipoint transmission, generating retransmission data in response to the multiple feedback signals, and transmitting the retransmission data to the multiple terminals.
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公开(公告)号：US11876737B2
公开(公告)日：2024-01-16
申请号：US17214482
申请日：2021-03-26
Inventor： Jae-Hyun Seo , Sung-Ik Park , Seok-Ki Ahn , Jae-Young Lee
IPC: H04L5/00 , H04L27/26 , H04W72/0453 , H04W72/0446 , H04L1/00
CPC classification number: H04L5/0007 , H04L1/0071 , H04L27/2666 , H04W72/0446 , H04W72/0453
Abstract: Disclosed herein are a transmission apparatus, a reception apparatus and a transmission/reception method for an OFDM-based broadcasting system. The transmission apparatus includes multiple transmission frame generation units for generating multiple transmission frames from transmission data, an extended frame combination unit for generating an extended frame by combining the multiple transmission frames so that the multiple transmission frames are adjacent to each other based on a frequency, an extended OFDM modulation unit for modulating the extended frame and then generating a modulated signal, and a frequency up-conversion unit for performing frequency up-conversion on the modulated signal and generating a transmission signal, wherein each of the transmission frame generation units includes a data input unit for receiving transmission data, a channel-encoding unit for encoding the received transmission data and generating encoded data, and a framing and interleaving unit for framing and interleaving the encoded data and generating a transmission frame.
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