-
公开(公告)号：US11212026B2
公开(公告)日：2021-12-28
申请号：US16620722
申请日：2018-05-17
发明人： Takashi Iwai , Yoshio Urabe , Takayuki Nakano , Tomohumi Takata
摘要： A signal generator 10 generates an OOK (on-off keying) modulation signal by mapping a CAZAC (constant amplitude zero auto-correlation) sequence to N subcarriers (N being an integer that is greater than or equal to 2) arranged at a determined interval among M subcarriers (M being an integer that is greater than or equal to 3) that are adjacent in the frequency domain, carrying out inverse fast Fourier transform (IFFT) processing on the mapped CAZAC sequence, and carrying out Manchester coding on a time domain signal generated by the IFFT processing. A radio transmitter 107 transmits the OOK modulation signal.
-
公开(公告)号：US20210266117A1
公开(公告)日：2021-08-26
申请号：US17316498
申请日：2021-05-10
发明人： Seigo Nakao , Daichi Imamura
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：US11075709B2
公开(公告)日：2021-07-27
申请号：US16274307
申请日：2019-02-13
发明人： Seyong Park , Jing Lei , Renqiu Wang , Joseph Binamira Soriaga , Naga Bhushan , Tingfang Ji
摘要： Aspects of the present disclosure provide techniques for variable spreading factor codes for non-orthogonal multiple access (NOMA). In an exemplary method, a base station assigns, from a first codebook of N short code sequences of length K, a subset of the short code sequences to a number of user equipments (UEs); receives a signal including uplink data or control signals from two or more of the UEs, wherein a first uplink data or control signal is sent using a first subsequence of one of the assigned short code sequences, and a second uplink data or control signal is sent using a second subsequence of one of the assigned short code sequences or using one of the assigned short code sequences; and decodes each uplink data or control signal in the signal based on the assigned short code sequences and subsequences of the assigned the short code sequences.
-
公开(公告)号：US11051345B2
公开(公告)日：2021-06-29
申请号：US16775335
申请日：2020-01-29
摘要： A user terminal apparatus includes a receiver to receive a control information value belonging to a set of multiple control information values. Each control information value in the set of multiple control information values is associated with a subset of random access sequences from multiple subsets of random access sequences. Different ones of the multiple subsets of random access sequences are associated with different amounts of data. A data processor selects a random access sequence from one of the subset of random access sequences based on the control information value. A transmitter transmits the selected random access sequence.
-
5.发明申请公开(公告)号：US20210119752A1
公开(公告)日：2021-04-22
申请号：US17006790
申请日：2020-08-29
摘要： A sequence distributing and sequence processing method and apparatus in a communication system are provided. The sequence distributing method includes the following steps: generating sequence groups including a number of sequences, the sequences in the sequence groups are determined according to the sequence time frequency resource occupation manner which is supported by the system; distributing the sequence groups to cells. The method avoids the phenomenon that signaling transmission is needed to distribute the sequences to the cells for different time frequency resource occupation manner, and saves in so far as possible the wireless network transmission resource occupied during the process of distributing the sequences through distributing the sequence groups comprising a number of sequences to the cells.
-
公开(公告)号：US10972231B2
公开(公告)日：2021-04-06
申请号：US16749053
申请日：2020-01-22
申请人： Sun Patent Trust
摘要： A radio communication terminal that increases the ACK/NACK resource utilization efficiency while preventing ACK/NACK collision, and that causes no unnecessary reduction of the PUSCH band in a system that transmits E-PDCCH control information. The radio communication terminal adopts a configuration including a receiving section that receives a control signal including an ACK/NACK index via an enhanced physical downlink control channel (E-PDCCH) transmitted using one configuration from among one or a plurality of configuration candidates, a control section that selects a resource to be used for an ACK/NACK signal of downlink data from among specified resources specified beforehand based on E-PDCCH configuration information used for transmission or reception of the E-PDCCH and the ACK/NACK index, and a transmitting section that transmits the ACK/NACK signal using the selected specified resource.
-
7.发明授权公开(公告)号：US10764011B2
公开(公告)日：2020-09-01
申请号：US16419008
申请日：2019-05-22
摘要： A sequence distributing and sequence processing method and apparatus in a communication system are provided. The sequence distributing method includes the following steps: generating sequence groups including a number of sequences, the sequences in the sequence groups are determined according to the sequence time frequency resource occupation manner which is supported by the system; distributing the sequence groups to cells. The method avoids the phenomenon that signaling transmission is needed to distribute the sequences to the cells for different time frequency resource occupation manner, and saves in so far as possible the wireless network transmission resource occupied during the process of distributing the sequences through distributing the sequence groups comprising a number of sequences to the cells.
-
公开(公告)号：US10687368B2
公开(公告)日：2020-06-16
申请号：US16420765
申请日：2019-05-23
IPC分类号： H04W72/04 , H04W74/08 , H04J13/00 , H04J13/22 , H04B1/707 , H04L23/02 , H04B1/7083 , H04L5/00 , H04J13/10 , H04L27/26
摘要： A sequence allocating method and apparatus wherein in a system where a plurality of different Zadoff-Chu sequences or GCL sequences are allocated to a single cell, the arithmetic amount and circuit scale of a correlating circuit at a receiving end can be reduced. In ST201, a counter (a) and a number (p) of current sequence allocations are initialized, and in ST202, it is determined whether the number (p) of current sequence allocations is coincident with a number (K) of allocations to one cell. In ST203, it is determined whether the number (K) of allocations to the one cell is odd or even. If K is even, in ST204-ST206, sequence numbers (r=a and r=N−a), which are not currently allocated, are combined and then allocated. If K is odd, in ST207-ST212, for sequences that cannot be paired, one of sequence numbers (r=a and r=N−a), which are not currently allocated, is allocated.
-
公开(公告)号：US20200153479A1
公开(公告)日：2020-05-14
申请号：US16738355
申请日：2020-01-09
申请人： Sun Patent Trust
发明人： Seigo NAKAO , Hidetoshi Suzuki , Daichi Imamura
IPC分类号： H04B1/7143 , H04B7/024 , H04J11/00 , H04J13/22
摘要： A wireless communication terminal apparatus wherein CoMP communication can normally be performed without increasing the overhead of an upstream line control channel. In this apparatus, a spreading unit primarily spreads a response signal by use of a ZAC sequence established by a control unit. A spreading unit secondarily spreads the response signal, to which CP has been added, by use of a block-wise spread code sequence established by the control unit. The control unit controls, in accordance with sequence numbers and a hopping pattern established therein, the circular shift amount of the ZAC sequence to be used for the primary spread in the spreading unit and the block-wise spread code sequence to be used for the secondary spread in the spreading unit. The hopping pattern established in the control unit is a hopping pattern common to a plurality of base stations that CoMP-receive the response signal.
-
公开(公告)号：US20190089406A1
公开(公告)日：2019-03-21
申请号：US16176001
申请日：2018-10-31
申请人： Sun Patent Trust
发明人： Seigo NAKAO , Hidetoshi SUZUKI , Daichi IMAMURA
IPC分类号： H04B1/7143 , H04J11/00 , H04B7/024 , H04J13/22
CPC分类号： H04B1/7143 , H04B7/024 , H04J11/0053 , H04J13/22
摘要： A wireless communication terminal apparatus wherein CoMP communication can normally be performed without increasing the overhead of an upstream line control channel. In this apparatus, a spreading unit primarily spreads a response signal by use of a ZAC sequence established by a control unit. A spreading unit secondarily spreads the response signal, to which CP has been added, by use of a block-wise spread code sequence established by the control unit. The control unit controls, in accordance with sequence numbers and a hopping pattern established therein, the circular shift amount of the ZAC sequence to be used for the primary spread in the spreading unit and the block-wise spread code sequence to be used for the secondary spread in the spreading unit. The hopping pattern established in the control unit is a hopping pattern common to a plurality of base stations that CoMP-receive the response signal.
-
-
-
-
-
-
-
-
-
搜索结果
164 条记录 (耗时 0.025 秒)
