公开(公告)号：US20180131481A1

公开(公告)日：2018-05-10

申请号：US15713893

申请日：2017-09-25

申请人： Intel Corporation

发明人： Jing Jiang ,  Pierre Bertrand ,  Tarik Muharemovic

IPC分类号： H04L5/00 ,  H04L27/26 ,  H04J13/00 ,  H04W74/08

CPC分类号： H04L5/0007 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/0074 ,  H04L27/2601 ,  H04L27/2607 ,  H04L27/2613 ,  H04W74/08

摘要： Transmission of random access preamble structures within a cellular wireless network is based on the use of cyclic shifted constant amplitude zero autocorrelation (“CAZAC”) sequences to generate the random access preamble signal. A pre-defined set of sequences is arranged in a specific order. Within the predefined set of sequences is an ordered group of sequences that is a proper subset of the pre-defined set of sequences. Within a given cell, up to 64 sequences may need to be signaled. In order to minimize the associated overhead due to signaling multiple sequences, only one logical index is transmitted by a base station serving the cell and a user equipment within the cell derives the subsequent indexes according to the pre-defined ordering. Each sequence has a unique logical index. The ordering of sequences is identified by the logical indexes of the sequences, with each logical index uniquely mapped to a generating index. When a UE needs to transmit, it produces a second sequence using the received indication of the logical index of the first sequence and an auxiliary parameter and then produces a transmission signal by modulating the second sequence.

公开(公告)号：US09935803B2

公开(公告)日：2018-04-03

申请号：US15170907

申请日：2016-06-01

申请人： MediaTek Inc.

发明人： Yasantha Rajakarunanayake

IPC分类号： H04L27/26 ,  H04B7/0452 ,  H04L5/00 ,  H04J13/00 ,  H04W84/04

CPC分类号： H04L27/2605 ,  H04B7/0452 ,  H04J13/0059 ,  H04L5/0044 ,  H04L27/2614 ,  H04W84/042

摘要： Methods and apparatuses pertaining to opportunistic peak-to-average power ratio reduction in multi-user multi-input and multi-output (MU-MIMO) wireless communication are described. A method may involve determining whether a length of a payload of each spatial stream of a plurality of spatial streams is less than a predetermined length for transmission of each spatial stream of the plurality of spatial streams. The method may also involve padding one or more time slots associated with a first spatial stream of the plurality of spatial streams with one or more special symbols other than zero in response to a determination that the length of a first payload of the first spatial stream is less than the predetermined length. The method may further involve transmitting the first spatial stream which includes the first payload and the one or more special symbols.

公开(公告)号：US20180092074A1

公开(公告)日：2018-03-29

申请号：US15828470

申请日：2017-12-01

申请人： Sharp Kabushiki Kaisha

发明人： Shoichi SUZUKI ,  Yosuke AKIMOTO

IPC分类号： H04W72/04 ,  H04L25/02 ,  H04L5/00 ,  H04W72/12 ,  H04J13/00 ,  H04W74/08 ,  H04W88/02 ,  H04W88/08

CPC分类号： H04W72/042 ,  H04J13/0059 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0091 ,  H04L25/0224 ,  H04W72/1289 ,  H04W74/0833 ,  H04W88/02 ,  H04W88/08

摘要： In a radio communication system using OCC for DMRS, a base station apparatus correctly receives PUSCH. If a first mode is set in which a demodulation reference signal of a physical uplink shared channel is multiplied by an orthogonal code determined in advance or if a temporary C-RNTI was used for a transmission of downlink control information, the demodulation reference signal of the physical uplink shared channel is multiplied by the orthogonal code determined in advance, and if a second mode is set in which the demodulation reference signal of the physical uplink shared channel is multiplied by an orthogonal code determined on the basis of cyclic shift information in the downlink control information and moreover, if an RNTI other than the temporary C-RNTI was used for the transmission of the downlink control information, the demodulation reference signal of the physical uplink shared channel is multiplied by the orthogonal code determined on the basis of the cyclic shift information in the downlink control information.

公开(公告)号：US20180069667A1

公开(公告)日：2018-03-08

申请号：US15808708

申请日：2017-11-09

申请人： Panasonic Corporation

发明人： Seigo Nakao ,  Daichi Imamura

IPC分类号： H04L1/18 ,  H04W72/04

CPC分类号： H04L1/1893 ,  H04J13/0003 ,  H04J13/0059 ,  H04J13/0074 ,  H04J13/22 ,  H04L1/0061 ,  H04L1/1825 ,  H04L1/1854 ,  H04L1/1861 ,  H04L1/1896 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/006 ,  H04L5/0091 ,  H04L25/03866 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2626 ,  H04L2001/125 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/042

摘要： Provided is a radio communication device which can make Acknowledgement (ACK) reception quality and Negative Acknowledgement (NACK) reception quality to be equal to each other. The device includes: a scrambling unit (214) which multiplies a response signal after modulated, by a scrambling code “1” or “e−j(π/2)” so as to rotate a constellation for each of response signals on a cyclic shift axis; a spread unit (215) which performs a primary spread of the response signal by using a Zero Auto Correlation (ZAC) sequence set by a control unit (209); and a spread unit (218) which performs a secondary spread of the response signal after subjected to the primary spread, by using a block-wise spread code sequence set by the control unit (209).

公开(公告)号：US09819434B2

公开(公告)日：2017-11-14

申请号：US14842618

申请日：2015-09-01

申请人： HUAWEI TECHNOLOGIES CO.,LTD.

发明人： Bingyu Qu ,  Yujuan He ,  Xuan Feng

IPC分类号： H04J13/00 ,  H04L27/26 ,  H04W72/04 ,  H04B7/022 ,  H04J13/22 ,  H04L5/00 ,  H04L23/02 ,  H04L25/02

CPC分类号： H04J13/0059 ,  H04B7/022 ,  H04J13/0062 ,  H04J13/22 ,  H04L5/0041 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0062 ,  H04L5/0073 ,  H04L5/0078 ,  H04L23/02 ,  H04L25/0226 ,  H04L27/261 ,  H04L27/262 ,  H04W72/04

摘要： A method and apparatus for allocating and processing sequences in a communication system is disclosed. The method includes: dividing sequences in a sequence group into multiple sub-groups, each sub-group corresponding to its own mode of occupying time frequency resources; selecting sequences from a candidate sequence collection corresponding to each sub-group to form the sequences in the sub-group by: the sequences in a sub-group i in a sequence group k being composed of n sequences in the candidate sequence collection, the n sequences making a |ri/Ni−ck/Np1| or |(ri/Ni−ck/Np1) modu mk,i| function value the smallest, second smallest, till the nth smallest respectively; allocating the sequence group to cells, users or channels. It prevents the sequences highly correlated with the sequences of a specific length from appearing in other sequence groups, thus reducing interference, avoiding the trouble of storing the lists of massive sequence groups.

公开(公告)号：US09705624B2

公开(公告)日：2017-07-11

申请号：US15404542

申请日：2017-01-12

申请人： EVOLVED WIRELESS LLC

发明人： Yeong Hyeon Kwon ,  Seung Hee Han ,  Hyun Hwa Park ,  Dong Cheol Kim ,  Hyun Woo Lee ,  Min Seok Noh

IPC分类号： G06F15/16 ,  H04J13/10 ,  H04W74/08 ,  H04W74/00 ,  H04J13/00

CPC分类号： H04J13/10 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/107 ,  H04J13/22 ,  H04L5/0016 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0092 ,  H04L25/0226 ,  H04L27/2605 ,  H04L27/2607 ,  H04L27/2655 ,  H04W48/10 ,  H04W48/12 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0453 ,  H04W74/002 ,  H04W74/08 ,  H04W74/0833 ,  H04W76/18

摘要： Disclosed is a data transmission method in a mobile communication system. The data transmission method through a code sequence in a mobile communication system includes grouping input data streams into a plurality of blocks consisting of at least one bit so as to map each block to a corresponding signature sequence, multiplying a signature sequence stream, to which the plurality of blocks are mapped, by a specific code sequence, and transmitting the signature sequence stream multiplied by the specific code sequence to a receiver.

公开(公告)号：US09693353B2

公开(公告)日：2017-06-27

申请号：US15245747

申请日：2016-08-24

申请人： Sun Patent Trust

发明人： Shinsuke Takaoka ,  Seigo Nakao ,  Daichi Imamura ,  Masayuki Hoshino

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04L27/00 ,  H04L27/26 ,  H04L1/00 ,  H04B7/0456 ,  H04J13/00

CPC分类号： H04W72/0453 ,  H04B7/0456 ,  H04J13/0059 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0007 ,  H04L5/0021 ,  H04L5/0023 ,  H04L5/0041 ,  H04L5/0046 ,  H04L5/006 ,  H04L27/0008 ,  H04L27/2636

摘要： A wireless communication terminal apparatus wherein even when a SC-FDMA signal is divided into a plurality of clusters and the plurality of clusters are then mapped to respective discontinuous frequency bands (when C-SC-FDMA is used), the improvement effect of system throughput can be maintained, while the user throughput can be improved. In the apparatus, a DFT unit (210) subjects a symbol sequence of time domain to a DFT process, thereby generating signals of frequency domain. A setting unit (211) divides the signals input from the DFT unit (210) into a plurality of clusters according to a cluster pattern that is in accordance with an MCS set, an encoding size, or the number of Ranks occurring during MIMO transmissions, which is indicated in those signals input, and then maps the plurality of clusters to the respective ones of a plurality of discontinuous frequency resources, thereby setting a constellation of the plurality of clusters in the frequency domain.

公开(公告)号：US09692575B2

公开(公告)日：2017-06-27

申请号：US14512219

申请日：2014-10-10

申请人： LG ELECTRONICS INC.

发明人： Jin Sam Kwak ,  Seung Hee Han ,  Min Seok Noh ,  Yeong Hyeon Kwon ,  Hyun Woo Lee ,  Dong Cheol Kim

IPC分类号： H04L5/00 ,  H04L1/18 ,  H04W72/04 ,  H04J13/00 ,  H04L1/16 ,  H04L25/02

CPC分类号： H04L5/0053 ,  H04J13/0059 ,  H04J13/0074 ,  H04L1/1692 ,  H04L1/1812 ,  H04L1/1861 ,  H04L1/1887 ,  H04L5/0021 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0055 ,  H04L5/0057 ,  H04L25/0224 ,  H04W72/0406

摘要： A method and a base station for receiving uplink control signals in a wireless communication system are described. The base station receives a first uplink control channel in a mixed resource block from a first user equipment. The mixed resource block includes a plurality of subcarriers. The base station receives a second uplink control channel in the mixed resource block from a second user equipment. The first uplink control channel is identified by a first cyclic shift value. The second uplink control channel is identified by a second cyclic shift value that is different from the first cyclic shift value. The first uplink control channel carries a Hybrid Automatic Repeat Request (HARQ) acknowledgement/negative acknowledgement (ACK/NACK) of the first user equipment. The second uplink control channel carries a channel quality indicator (CQI) for the second user equipment and a HARQ ACK/NACK of the second user equipment.

公开(公告)号：US09680540B2

公开(公告)日：2017-06-13

申请号：US14640331

申请日：2015-03-06

申请人： Vodafone GmbH

发明人： Luciano Mendes ,  Ivan Gaspar ,  Maximilian Matthe ,  Andreas Festag ,  Gerhard Fettweis

IPC分类号： H04L27/28 ,  H04B7/0456 ,  H04L1/00 ,  H04L27/26 ,  H04J13/00 ,  H04B1/7093 ,  H04J11/00 ,  H04W72/04

CPC分类号： H04B7/0456 ,  H04B2001/70935 ,  H04J13/0059 ,  H04J2011/0009 ,  H04L1/0057 ,  H04L27/264 ,  H04W72/0446 ,  H04W72/0453

摘要： A radio transmission system based on a frequency divisional multiplexing method is described, wherein a transmit symbol comprises a plurality of data symbols assigned to at least two subcarriers. The information of symbols of one time slot is spread across the data symbols of subcarrier of the time slot to produce a transmit symbol being more robust to frequency selective channels.

公开(公告)号：US20170117995A1

公开(公告)日：2017-04-27

申请号：US15399396

申请日：2017-01-05

申请人： Samsung Electronics Co., Ltd.

发明人： Aris PAPASAKELLARIOU ,  Joon-Young CHO

IPC分类号： H04L5/00 ,  H04W72/04

CPC分类号： H04L5/0012 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/0074 ,  H04J13/22 ,  H04L5/0042 ,  H04L25/4904 ,  H04L27/2602 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0466 ,  H04W84/042

摘要： Methods and apparatuses are provided for transmitting a signal using a sequence in a wireless communication system. A first sequence used to transmit a first signal in a first channel is determined by performing group-hopping using a pseudo-random pattern over a first group of sequences. A second sequence used to transmit a second signal in a second channel is determined by performing the group-hopping using the pseudo-random pattern over a second group of sequences.