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1.发明公开公开(公告)号：US20240007338A1
公开(公告)日：2024-01-04
申请号：US18228469
申请日：2023-07-31
Applicant: InterDigital Patent Holdings, Inc.
Inventor： Alphan SAHIN , Rui YANG , Erdem BALA
CPC classification number: H04L27/2636 , H04W4/70 , H04L5/0007 , H04L1/0071 , H04L5/0051 , H04L1/0069
Abstract: A method for transmitting a discrete fourier transform (DFT) DFT-S-OFDM signal including frequency domain reference symbols is disclosed. The method comprises: determining to null a plurality of data symbols prior to DFT-spreading; performing DFT-spreading including the determined null data symbols; puncturing an interleaved output of the DFT-spreading; inserting reference symbols in a frequency domain of the punctured and interleaved DFT-S-OFDM signal; and transmitting the DFT-S-OFDM signal with inserted reference symbols to a receiver. The transmitted DFT-S-OFDM signal enables the receiver to apply zeros corresponding to the reference symbols to an interleaved input of DFT-despreading, and cancel interference due to the puncturing by using all outputs of the DFT-despreading.
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2.发明申请公开(公告)号：US20180048427A1
公开(公告)日：2018-02-15
申请号：US15555786
申请日：2016-03-07
Applicant: InterDigital Patent Holdings, Inc.
Inventor： Hanqing LOU , Oghenekome OTERI , Rui YANG , Robert L. OLESEN , Guodong ZHANG
CPC classification number: H04L1/0072 , H04L1/0079 , H04L1/18 , H04L61/6022 , H04W84/12
Abstract: A STA may perform packet detection to detect a packet and decode a legacy preamble of the detected packet including a legacy short training field (L-STF), a legacy long training field (L-LTF), and a legacy signal (L-SIG) field. The STA may decode a high efficiency signal A (HE-SIG-A) field to obtain a first partial association identifier (PAID) comprising group information. If the decoded group information matches group information stored in a memory of the STA, the STA may decode a high efficiency (HE) preamble and a high efficiency signal B (HE-SIG-B) field of the detected packet. The HE-SIG-B field may include a station identifier within the group. When the group information is combined with the station identifier, the STA may determine an accurate address.
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公开(公告)号：US20230163808A1
公开(公告)日：2023-05-25
申请号：US17919868
申请日：2021-04-28
Applicant: InterDigital Patent Holdings, Inc.
Inventor： Hanqing LOU , Li Hsiang SUN , Xiaofei WANG , Rui YANG
CPC classification number: H04B7/024 , H04W52/143 , H04W52/243
Abstract: A method performed by a first wireless access point for coordinating a multi-access point transmission in a wireless network of multiple access points includes receiving an indication of a transmit opportunity for the first wireless access point, transmitting at least one indication frame to the multiple access points comprising information related to the transmit opportunity, receiving at least one request frame from one or more access points of the multiple access points indicating participation with the transmit opportunity, and transmitting a trigger frame to the one or more access points that indicated participation with the transmit opportunity, wherein the trigger frame comprises information indicating respective power levels for the participating access points. The shared transmit opportunity may then be used to transmit downlink data to associated stations of the first wireless access point and the other participating access points during the transmit opportunity.
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4.发明公开公开(公告)号：US20240022352A1
公开(公告)日：2024-01-18
申请号：US18354857
申请日：2023-07-19
Applicant: InterDigital Patent Holdings, Inc.
Inventor： Hanqing LOU , Oghenekome OTERI , Rui YANG , Robert OLESEN , Guodong ZHANG
CPC classification number: H04L1/0072 , H04L1/0079 , H04L1/18 , H04W84/12
Abstract: A method performed by a STA may comprise receiving data of a MU-HE-PPDU, from an AP. The MU-HE-PPDU may comprise a HE-SIG-A field, a first HE-SIG-B portion and a second HE-SIG-B portion. The first HE-SIG-B portion may be received on a first channel and the second HE-SIG-B portion may be received on a second channel which is different than the first channel. The first HE-SIG-B portion may include one or more STA identifiers.
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5.发明申请公开(公告)号：US20180139081A1
公开(公告)日：2018-05-17
申请号：US15572691
申请日：2016-05-06
Inventor： Ertugrul GUVENKAYA , Erdem BALA , Rui YANG , Huseyin ARSLAN , Alphan SAHIN , Anas TOM
IPC: H04L27/26
CPC classification number: H04L27/2607 , H04L25/03828 , H04L27/2602 , H04L27/2614 , H04L27/2618 , H04L2027/0087
Abstract: A wireless transmit/receive unit (WTRU) may combine an alignment component with an FDM based symbol to produce a signal such that it is aligned to a duration of a CP of the FDM based symbol at a receiver upon reception. A component may be added to one or more subcarriers of the alignment signal to reduce peak-to-average ratio (PAPR) of the signal.
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Patent Agency Ranking
公开(公告)号：US20150372843A1
公开(公告)日：2015-12-24
申请号：US14766040
申请日：2014-02-04
Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
Inventor： Erdem BALA , Rui YANG , Jialing LI , Daniel R. COHEN
Abstract: A method and apparatus for performing pulse shaping using different windowing functions for different sub-bands of a transmission is disclosed. A method for use in a wireless transmit/receive unit (WTRU) may include the WTRU receiving data symbols. The WTRU may assign the data symbols to a plurality of subcarriers in different sub-bands and map the data symbols on each of the plurality of subcarriers in the different sub-bands to a plurality of corresponding subcarriers of an inverse fast Fourier transform (IFFT) block. The WTRU may take an IFFT of the block for each sub-band and pad an output of the IFFT block with a prefix and a postfix for each sub-band. The WTRU may apply a windowing function to an output of the padding for each sub-band and form a composite signal for transmission by adding an output of the windowing of each sub-band. The WTRU may transmit the signal.
Abstract translation: 公开了一种用于使用用于传输的不同子带的不同窗函数来执行脉冲整形的方法和装置。 在无线发射/接收单元（WTRU）中使用的方法可以包括WTRU接收数据符号。 WTRU可以将数据符号分配给不同子带中的多个子载波，并将不同子带中的多个子载波中的每一个上的数据符号映射到快速傅里叶逆变换（IFFT）的多个对应子载波， 块。 WTRU可以针对每个子带采取该块的IFFT，并且对于每个子带填充IFFT块的输出，并具有前缀和后缀。 WTRU可以对每个子带的填充的输出应用加窗函数，并且通过添加每个子带的窗口的输出来形成用于发送的复合信号。 WTRU可以发送信号。
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公开(公告)号：US20250168049A1
公开(公告)日：2025-05-22
申请号：US19031195
申请日：2025-01-17
Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
Inventor： Alphan SAHIN , Rui YANG , Erdem BALA
Abstract: A method for transmitting a discrete fourier transform (DFT) DFT-S-OFDM signal including frequency domain reference symbols is disclosed. The method comprises: determining to null a plurality of data symbols prior to DFT-spreading; performing DFT-spreading including the determined null data symbols; puncturing an interleaved output of the DFT-spreading; inserting reference symbols in a frequency domain of the punctured and interleaved DFT-S-OFDM signal; and transmitting the DFT-S-OFDM signal with inserted reference symbols to a receiver. The transmitted DFT-S-OFDM signal enables the receiver to apply zeros corresponding to the reference symbols to an interleaved input of DFT-despreading, and cancel interference due to the puncturing by using all outputs of the DFT-despreading.
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公开(公告)号：US20240072852A1
公开(公告)日：2024-02-29
申请号：US18242288
申请日：2023-09-05
Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
Inventor： Hanqing LOU , Li Hsiang SUN , Oghenekome OTERI , Rui YANG
IPC: H04B7/0452 , H04B7/06 , H04L27/26 , H04W72/23
CPC classification number: H04B7/0452 , H04B7/0617 , H04L27/2601 , H04W72/23 , H04W84/12
Abstract: Methods and apparatus are described herein for dynamic allocation of multiple channels and data streams for multi-channel transmission and multiple-input and multiple-output (MIMO). For example, a station (STA) may receive an enhanced poll (EPoll) frame that includes a time offset, a channel offset and antenna/sector settings from an access point (AP). The STA may transmit, based on the received EPoll frame, an enhanced service period request (ESPR) frame that includes a MIMO control field and a multi-channel control field. The MIMO control field may indicate whether the STA supports MIMO transmission. The multi-channel control field may indicate whether the STA supports multi-channel transmission. Upon transmitting the ESPR frame, the STA may receive an enhanced grant frame from the AP. The enhanced grant frame may include an antenna configuration and a multi-channel allocation to enable the STA to perform the MIMO transmission and the multi-channel transmission.
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公开(公告)号：US20230133677A1
公开(公告)日：2023-05-04
申请号：US17911073
申请日：2021-03-11
Applicant: InterDigital Patent Holdings, Inc.
Inventor： Li Hsiang SUN , Hanqing LOU , Rui YANG , Xiaofei WANG
IPC: H04L1/00
Abstract: A method to transmit data from a wireless apparatus includes determining an information block length corresponding to an error correction code, inserting padding bits into at least one protocol data unit, PDU, of a plurality of PDUs such that a padded PDU size is an integer multiple of the determined information block length, and wherein each PDU in a frame of PDUs to be transmitted comprises a PDU size that is an integer multiple of the determined information block length, and transmitting the frame encoded by the error correction code with the determined information block length to a wireless receiver.
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公开(公告)号：US20220393728A1
公开(公告)日：2022-12-08
申请号：US17890721
申请日：2022-08-18
Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
Inventor： Hanqing LOU , Li Hsiang SUN , Oghenekome OTERI , Rui YANG
IPC: H04B7/0452 , H04B7/06 , H04L27/26 , H04W72/14
Abstract: Methods and apparatus are described herein for dynamic allocation of multiple channels and data streams for multi-channel transmission and multiple-input and multiple-output (MIMO). For example, a station (STA) may receive an enhanced poll (EPoll) frame that includes a time offset, a channel offset and antenna/sector settings from an access point (AP). The STA may transmit, based on the received EPoll frame, an enhanced service period request (ESPR) frame that includes a MIMO control field and a multi-channel control field. The MIMO control field may indicate whether the STA supports MIMO transmission. The multi-channel control field may indicate whether the STA supports multi-channel transmission. Upon transmitting the ESPR frame, the STA may receive an enhanced grant frame from the AP. The enhanced grant frame may include an antenna configuration and a multi-channel allocation to enable the STA to perform the MIMO transmission and the multi-channel transmission.
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