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公开(公告)号：US20240171335A1
公开(公告)日：2024-05-23
申请号：US18424484
申请日：2024-01-26
申请人： Sun Patent Trust
IPC分类号： H04L5/00 , H04B7/0413 , H04B7/0417 , H04B7/06 , H04L25/02 , H04L27/26 , H04W74/00
CPC分类号： H04L5/0048 , H04B7/0413 , H04B7/0417 , H04B7/0682 , H04L5/0023 , H04L25/0226 , H04L25/0228 , H04L27/2613 , H04L27/2626 , H04W74/002 , H04W88/02
摘要： Provided is a radio communication device which can separate propagation paths of antenna ports and improve a channel estimation accuracy even when using virtual antennas. The device includes: a mapping unit which maps a data signal after modulation to a virtual antenna and a virtual antenna; a phase inversion unit which inverts the phase of S0 transmitted from an antenna port in synchronization with a phase inversion unit between the odd-number slot and the even-number slot; the phase inversion unit which inverts the phase of R0 transmitted from the antenna port; a phase inversion unit which inverts the phase of S1 transmitted from an antenna port in synchronization with a phase inversion unit; and the phase inversion unit which inverts the phase of R1 transmitted from an antenna port.
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2.发明公开公开(公告)号：US20240155632A1
公开(公告)日：2024-05-09
申请号：US18415731
申请日：2024-01-18
申请人： Sun Patent Trust
发明人： Yoshiko SAITO , Ayako HORIUCHI , Seigo NAKAO , Akihiko NISHIO , Daichi IMAMURA , Alexander GOLITSCHEK EDLER VON ELBWART , Sujuan FENG
CPC分类号： H04W72/23 , H04J11/0079 , H04L5/001 , H04L5/0051 , H04L5/0053 , H04L5/0094
摘要： A communication apparatus has a receiver and a decoder. The receiver receives a control signal including first downlink control information and second downlink control information, and receives decoding area information that indicates whether the extended Physical Downlink Control Channel (PDCCH) should be decoded for each of a plurality of terminal apparatuses. The decoder decodes each of a plurality of first mapping candidates in the PDCCH area or decodes each of the plurality of first mapping candidates in the PDCCH area and each of the plurality of second mapping candidates in the extended PDCCH. A number of the second mapping candidates included in the user-specific search space equals to or is more than a number of the first mapping candidates included in the common search space.
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公开(公告)号：US20230216618A1
公开(公告)日：2023-07-06
申请号：US18183875
申请日：2023-03-14
申请人： Sun Patent Trust
发明人： Toru OIZUMI , Seigo NAKAO
IPC分类号： H04L1/1829 , H04L1/00 , H04L1/1607 , H04L5/00 , H04W72/21
CPC分类号： H04L1/1861 , H04L1/0061 , H04L1/1671 , H04L5/001 , H04L5/0055 , H04W72/21
摘要： Provided is a terminal device that is capable of improving the characteristics of a response signal having poor transmission characteristics when ARQ is utilized in communication using an uplink unit band and a plurality of downlink unit bands associated with the uplink unit band. At the time of channel selection, a control unit selects a resource used in sending a response signal from among specific PUCCH resources notified in advance from a base station and PUCCH resources mapped to a CCE, and controls the transmission of the response signal. A response signal generating unit supports implicit signaling with respect to any given response signal, and at the same time as supporting LTE fallback from 2CC, uses a mapping method that, between bits, smooths the number of PUCCH resources that can determine ACK/NACK simply by determining the PUCCH resource regarding which the response signal had notified.
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公开(公告)号：US20230013540A1
公开(公告)日：2023-01-19
申请号：US17955420
申请日：2022-09-28
申请人： SUN PATENT TRUST
发明人： Masayuki HOSHINO , Akihiko NISHIO , Seigo NAKAO , Daichi IMAMURA , Yasuaki YUDA
摘要： To suppress concentration of channel quality information requests and reports in a case of discontinuously transmitting reference signals at specific resources in a time domain, and thereby preventing degradation in throughput. A transmission apparatus transmits an instruction of CSI request distributed for each reception apparatus in a subframe concurrently with or earlier than a reference signal CSI-RS to each of reception apparatuses. Each of the reception apparatuses detects the CSI request from the transmission apparatus and calculates CSI from a channel estimation value of CSI-RS received thereafter. Then, the reception apparatus identifies CSI report subframe of the own apparatus from CSI report interval information of a given time interval notified in advance, the subframe in which the CSI request is detected and transmission timing of CSI-RS, and transmits a feedback signal including CSI report value by using PUSCH at the timing of the CSI report subframe.
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5.发明申请公开(公告)号：US20220240298A1
公开(公告)日：2022-07-28
申请号：US17718154
申请日：2022-04-11
申请人： Sun Patent Trust
发明人： Yoshihiko OGAWA , Akihiko NISHIO , Daichi IMAMURA , Seigo NAKAO , Masayuki HOSHINO , Takashi IWAI , Sadaki FUTAGI
摘要： Communication apparatuses and methods reduce the amount of signaling while maintaining a high scheduling gain. A determination unit stores a correspondence between the number of code words and the number of clusters to reduce the maximum value for the number of clusters allocated to each terminal as the number of code words increases, and thus determines the maximum value for the number of clusters based on the number of code words acquired. Based on the number of code words for a transmission signal from a terminal, an estimated value for the reception quality that is output by an estimation unit, and the maximum value for the number of clusters that is output by the determination unit, a scheduling unit schedules the allocation of the transmission signal transmitted by each terminal to a transmission band frequency (frequency resource) so as not to exceed the maximum value for the number of clusters.
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公开(公告)号：US20220094489A1
公开(公告)日：2022-03-24
申请号：US17539703
申请日：2021-12-01
申请人： Sun Patent Trust
发明人： Seigo NAKAO , Akihiko NISHIO , Daichi IMAMURA
IPC分类号： H04L5/00 , H04W28/06 , H04B7/0456 , H04B7/06 , H04W72/04
摘要： Disclosed are a wireless base station, wireless terminal, and channel signal formation method that can prevent the quality of downstream assignment control data from degrading, while preventing the number of blind determinations from increasing on the wireless terminal on the receiving side of the downstream control channel signal. In a base station (100), a control unit (101) and a data size regulation unit (103) control the data size of downstream assignment control data and upstream assignment control data contained in the PDCCH signal based on the communication format used between the base station (100) and a terminal (200), the number of antennas (M) (nonnegative number) on the base station (100), the number of antennas (N) (nonnegative number) on the terminal (200), the bandwidth of the downstream band, and the bandwidth of the upstream band. Specifically, the control unit (101) determines it is unnecessary to adjust the aforementioned data size when the selected communication format is first established between multiple antennas and when where there are multiple for one of M and N and only one for the other.
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公开(公告)号：US20200092060A1
公开(公告)日：2020-03-19
申请号：US16690688
申请日：2019-11-21
申请人： Sun Patent Trust
发明人： Takashi IWAI , Akihiko NISHIO , Yoshihiko OGAWA , Seigo NAKAO , Masayuki HOSHINO
摘要： Provided are a radio communication terminal apparatus and a radio transmission method by which intersymbol interference of DM-RS of a CoMP terminal and a Non-CoMP terminal can be reduced. A CoMP set setting unit (102) sets the cell IDs of all cells in the CoMP set in a cell selection unit (104), and a serving cell setting unit (103) sets the cell ID of the serving cell in the cell selection unit (104). The cell selection unit (104) selects the cell ID having a number closest to the cell ID of the serving cell from the cells in the CoMP set. A sequence information calculation unit (106) derives a sequence group number from the selected cell ID, and the sequence information calculation unit (106) calculates a sequence number from the derived sequence group number and a transmission bandwidth of the DM-RS.
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公开(公告)号：US20190150153A1
公开(公告)日：2019-05-16
申请号：US16245944
申请日：2019-01-11
申请人： Sun Patent Trust
发明人： Akihiko NISHIO , Seigo NAKAO
CPC分类号： H04W72/0453 , H04L1/0025 , H04L1/0038 , H04L5/0007 , H04L5/003 , H04L5/0053 , H04L5/0055 , H04W72/042
摘要： A wireless communication base station device which makes it possible to provide a base station, terminal and CCE allocation method capable of reducing the number of times blind decoding of a terminal is performed, without increasing the CCE block rate, even when a plurality of unit bands are set in a terminal. In this device, a search space setting section (103) sets in each of a plurality of unit bands a common search space in respect of a terminal which is communicating using the plurality of unit bands and other terminals, and sets in each of the plurality of unit bands an individual search space in respect of the terminal. An allocation section (106) allocates control information solely to CCEs within the common search spaces set in specified unit bands among the plurality of unit bands, or solely to CCEs within individual search spaces set in specified unit bands.
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公开(公告)号：US20190098557A1
公开(公告)日：2019-03-28
申请号：US16206120
申请日：2018-11-30
申请人： Sun Patent Trust
发明人： Yoshihiko OGAWA , Seigo NAKAO , Akihiko NISHIO , Masayuki HOSHINO , Daichi IMAMURA , Atsushi SUMASU
CPC分类号： H04W48/02 , H04B7/0413 , H04L1/0026 , H04L1/0031 , H04L1/1671 , H04L1/1861 , H04L1/1893 , H04L5/001 , H04L5/0023 , H04L5/0055 , H04L5/0057 , H04W28/04 , H04W48/12
摘要： A terminal and a communication method thereof whereby, even in a case of employing an asymmetric carrier aggregation system and further employing a MIMO transmission method for upstream channels, the error characteristic of control information can be prevented from being degraded. In the terminal, a transport signal forming unit forms transport signals by arranging, based on an arrangement rule, ACK/NACK and CQI in a plurality of layers. According to the arrangement rule, an error detection result is arranged, on a priority basis, in a layer that is different from a layer in which the channel quality information is arranged. In this way, the puncturing of CQI using ACK/NACK can be minimized, with the result that the error characteristic of control information can be prevented from being degraded.
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公开(公告)号：US20170295577A1
公开(公告)日：2017-10-12
申请号：US15634376
申请日：2017-06-27
申请人： Sun Patent Trust
发明人： Akihiko NISHIO , Seigo NAKAO
CPC分类号： H04W72/0453 , H04L1/0025 , H04L1/0038 , H04L5/0007 , H04L5/003 , H04L5/0053 , H04L5/0055 , H04W72/042
摘要： A wireless communication base station device which makes it possible to provide a base station, terminal and CCE allocation method capable of reducing the number of times blind decoding of a terminal is performed, without increasing the CCE block rate, even when a plurality of unit bands are set in a terminal. In this device, a search space setting section (103) sets in each of a plurality of unit bands a common search space in respect of a terminal which is communicating using the plurality of unit bands and other terminals, and sets in each of the plurality of unit bands an individual search space in respect of the terminal. An allocation section (106) allocates control information solely to CCEs within the common search spaces set in specified unit bands among the plurality of unit bands, or solely to CCEs within individual search spaces set in specified unit bands.
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