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51.发明申请公开(公告)号：US20180352577A1
公开(公告)日：2018-12-06
申请号：US15882439
申请日：2018-01-29
发明人： Jiayin Zhang , Lei Huang , Yingpei Lin , Yan Xin
摘要： A method and system for LBT or CCA threshold setting for directional reception and transmission are provided. In an embodiment, a method in a wireless device for determining if a channel is clear in an unlicensed band channel in a wireless network includes detecting, with the wireless device, an energy along a first beamforming direction. The method also includes determining, with the wireless device, an energy detection threshold. The method also includes determining, with the wireless device, whether the unlicensed band channel is clear in at least the first receiving direction according to the energy and the energy detection threshold.
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公开(公告)号：US09980290B2
公开(公告)日：2018-05-22
申请号：US14988485
申请日：2016-01-05
IPC分类号： H04W74/08
CPC分类号： H04W74/0816
摘要： In accordance with an embodiment a method for performing carrier sense multiple access with collision avoidance (CSMA-CA) by a station in a wireless communications network includes determining, in accordance with transmission information related to previous transmission attempts, a rate of success for each window section of a plurality of window sections, selecting a window section in accordance with at least the rate of success for each of the window sections and at least one predetermined threshold, and transmitting data after a back-off delay selected from within the selected window section.
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53.发明申请公开(公告)号：US20170134235A1
公开(公告)日：2017-05-11
申请号：US15140697
申请日：2016-04-28
CPC分类号： H04L27/2621 , H04L5/001 , H04L5/003 , H04L5/0053 , H04L25/0226 , H04L27/2613
摘要： It is possible to reduce the PAPR of an amplified signal communicated over bonded channels by applying different phase shifts to control fields communicated over the bonded channels. The phase shifts reduce the amount of constructive interaction between the control fields by shifting the peaks of the respective signals in the time domain. The control fields may include short training fields (STFs), channel estimation (CE) fields, or header fields communicated over bonded channels.
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公开(公告)号：US12074820B2
公开(公告)日：2024-08-27
申请号：US17484709
申请日：2021-09-24
发明人： Jung Hoon Suh , Yan Xin , Osama Aboul-Magd , Kwok Shum Au
IPC分类号： H04L5/00 , H04B7/024 , H04B7/0456 , H04W24/10
CPC分类号： H04L5/0053 , H04B7/0456 , H04W24/10
摘要： The present disclosure provides methods and apparatus for coordinated beamforming. An aspect of the disclosure provides a method. The method includes sending, by a first access point (AP) of a plurality of collaborating APs, to one or more stations (STAs) associated with the plurality of collaborating APs, a request for channel state information (CSI) associated with the one or more STAs and the first AP. The method further includes receiving a response including the CSI associated with the one or more STAs and the first AP. The method further includes sending, to a second AP of the plurality of collaborating APs, a sounding request indicating the second AP to request, from the one or more STAs, CSI associated with the one or more STAs and the second AP. The method further includes sharing CSI information between the first and the second AP.
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55.发明授权公开(公告)号：US12012606B2
公开(公告)日：2024-06-18
申请号：US18348964
申请日：2023-07-07
发明人： Jung Hoon Suh , Yan Xin , Osama Aboul-Magd
CPC分类号： C12N15/8213 , C12N9/22 , C12N15/111 , C12N15/8203 , C12N15/825 , H04W84/12 , C12N2310/20
摘要： Methods and systems for outputting data for transmission in a wireless local area network (WLAN) are disclosed. The method comprises generating a trigger frame for a first wireless communication device, the trigger frame comprising one or more subfields of bits at predefined bit locations within the trigger frame that are populated with values for a second wireless communication device to copy into a trigger based frame for transmission to the first wireless communication device.
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公开(公告)号：US11876538B2
公开(公告)日：2024-01-16
申请号：US17856773
申请日：2022-07-01
发明人： Guido Montorsi , Sergio Benedetto , Wei Lin , Yan Xin , Ming Gan
CPC分类号： H03M13/6362 , H03M13/235 , H03M13/6356 , H04L1/0069
摘要： A convolutional code rate matching method and a communication apparatus are provided. A puncturing pattern of a second codeword at a second code rate is obtained based on a puncturing pattern of a first codeword at a first code rate. A second puncturing location set of the second codeword is a subset of a first puncturing location set of the first codeword. When a transmit device decreases a code rate from the first code rate to the second code rate, a redundant bit is sent at a location of a complementary set of the second puncturing location set relative to the first puncturing location set. Compared with the first puncturing location set, the second puncturing location set may obtain more incremental redundant bits, to decrease a channel encoding rate. This can improve decoding performance of a convolutional code.
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公开(公告)号：US11792062B2
公开(公告)日：2023-10-17
申请号：US17333404
申请日：2021-05-28
CPC分类号： H04L27/2634 , H03M13/255 , H04L27/28 , H04W84/12
摘要： The disclosed systems and methods for wireless communication directed are towards (i) encoding data bits to be transmitted over a multiple resource unit (MRU) in a wireless local area network (WLAN), (ii) creating a group of the encoded data bits based on a predetermined criterion, (iii) parsing the encoded bits in the group based on a proportional ratio associated with the MRU, (iv) modulating the parsed encoded data bits to generate modulated encoded data symbols, (v) mapping the modulated encoded data symbols to data subcarriers to generate encoded data subcarriers, the data subcarriers being associated with respective resource units (RUs) of the MRU, (vi) duplicating the encoded data subcarriers within the respective RUs, (vii) shuffling the duplicate encoded data subcarriers across the respective RUs of the MRU, and (viii) transmitting the encoded data subcarriers, and the duplicate encoded data subcarriers over the MRU in the WLAN.
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公开(公告)号：US20230276413A1
公开(公告)日：2023-08-31
申请号：US18313849
申请日：2023-05-08
发明人： Xiao Han , Mengyao Ma , Yan Xin , Chenlong Jia , Ming Gan
IPC分类号： H04W72/0446 , H04L1/16
CPC分类号： H04W72/0446 , H04L1/16 , H04B7/06
摘要： This application provides an information indication method and an apparatus. In this application, a sending apparatus generates and sends a first frame, the first frame includes at least one piece of sub-time resource indication information, and each piece of sub-time resource indication information is in a one-to-one correspondence with one of at least one response apparatus. In addition, each piece of sub-time resource indication information includes a time resource at which the corresponding response apparatus sends feedback information for the first frame to the sending apparatus and a time resource at which the sending apparatus sends acknowledgment information for the feedback information to the corresponding response apparatus, so that the at least one response apparatus and the sending apparatus that sends the first frame can simultaneously perform beamforming training, thereby improving effectiveness of beamforming training performed on the sending apparatus and the at least one response apparatus.
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公开(公告)号：US11637572B2
公开(公告)日：2023-04-25
申请号：US17028592
申请日：2020-09-22
IPC分类号： H04L12/741 , H03M13/00 , H04L27/34 , H04L27/26 , H04L69/18 , H04L27/00 , H04L1/00 , H04L5/00 , H04L69/22 , H04L27/20 , H04W72/04 , H03M13/27 , H04W84/12 , H03M13/11 , H03M13/29
摘要： A method of auto-detection of WLAN packets includes selecting a first Golay sequence from a first pair of Golay complementary sequences associated with first packet type, each Golay sequence of the first pair of Golay complementary sequences being zero correlation zone (ZCZ) sequences with each Golay sequence of a second pair of Golay complementary sequences associated with a second packet type, and transmitting a wireless packet carrying a short training field (STF) that includes one or more instances of the first Golay sequence.
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60.发明申请公开(公告)号：US20220360305A1
公开(公告)日：2022-11-10
申请号：US17307031
申请日：2021-05-04
发明人： Jung Hoon Suh , Yan Xin , Osama Aboul-Magd , Kwok Shum Au
摘要： Aspects of the disclosure provide for methods and systems for Sub-codebook based Trellis Coded Quantization for CSI Feedback. An aspect of the disclosure provides method executed by a receiver. The method includes receiving a signal from a transmitter, via a communication channel between the receiver and the transmitter. The method further includes estimating parameters associated with the channel based on the received signal. The method further includes obtaining phase information from the estimated parameters. The method further includes applying a trellis coded quantization (TCQ) scheme to the obtained phase information by mapping each sub-codebook index of a set of sub-codebook indices to output bits of each trellis branch making the distance between sub-codebooks maximally equal. The method further includes transmitting a channel state information (CSI) measurement feedback to the transmitter, the CSI measurement feedback based on the TCQ scheme and comprising one or more of: a beginning state, input bits to the TCQ scheme, and a sub-codebook index.
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