公开(公告)号：US20220394690A1

公开(公告)日：2022-12-08

申请号：US17889253

申请日：2022-08-16

申请人： Sun Patent Trust

发明人： Seigo Nakao ,  Akihiko Nishio ,  Daichi Imamura

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04W4/06

摘要： Disclosed is a base station in which the frequency usage efficiency can be improved when the communication bandwidths are asymmetric in the uplink line and the downlink line. A base station can communicate by using a plurality of downlink unit bands and a smaller number of uplink unit bands. A control unit allocates uplink resource allocation information and downlink resource allocation information to a PDCCH which is arranged in each of the plurality of downlink unit bands, and allocates a response signal to the uplink line data to a PHICH which is arranged in the same number of downlink unit bands from the plurality of downlink unit bands as there are uplink unit bands. A transmit RF unit transmits the resource allocation information or the response signal.

公开(公告)号：US20220360352A1

公开(公告)日：2022-11-10

申请号：US17870537

申请日：2022-07-21

申请人： Sun Patent Trust

发明人： Yoshihiko Ogawa ,  Akihiko Nishio ,  Takashi Iwai ,  Seigo Nakao ,  Daichi Imamura ,  Atsushi Sumasu

IPC分类号： H04J11/00 ,  H04B7/0452 ,  H04J13/00 ,  H04J13/18 ,  H04B7/06 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12

摘要： A terminal apparatus includes circuitry and a transmitter. The circuitry, in operation, generates a reference signal using a cyclic shift value and an orthogonal sequence, which are associated with each other. The orthogonal sequence is one of two orthogonal sequences corresponding to a first orthogonal sequence [1, 1] and a second orthogonal sequence [1, −1]. The cyclic shift value is one of 12 cyclic shift values ranging from 0 to 11. The transmitter, in operation, transmits the reference signal multiplexed with a data signal. Two of the cyclic shift values having a difference of 6 are respectively associated with the two orthogonal sequences.

公开(公告)号：US11470602B2

公开(公告)日：2022-10-11

申请号：US17168105

申请日：2021-02-04

申请人： Sun Patent Trust

发明人： Seigo Nakao ,  Akihiko Nishio ,  Daichi Imamura

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04W4/06

摘要： Disclosed is a base station in which the frequency usage efficiency can be improved when the communication bandwidths are asymmetric in the uplink line and the downlink line. A base station can communicate by using a plurality of downlink unit bands and a smaller number of uplink unit bands. A control unit allocates uplink resource allocation information and downlink resource allocation information to a PDCCH which is arranged in each of the plurality of downlink unit bands, and allocates a response signal to the uplink line data to a PHICH which is arranged in the same number of downlink unit bands from the plurality of downlink unit bands as there are uplink unit bands. A transmit RF unit transmits the resource allocation information or the response signal.

公开(公告)号：US20220110127A1

公开(公告)日：2022-04-07

申请号：US17553497

申请日：2021-12-16

申请人： Sun Patent Trust

发明人： Takashi Iwai ,  Sadaki Futagi ,  Daichi Imamura ,  Akihiko Nishio ,  Seigo Nakao ,  Yoshihiko Ogawa

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04W72/08

摘要： A scheduling apparatus and a scheduling method, wherein the amount of signaling for frequency resource allocation information can be reduced while maintaining system throughput performance. In a base station apparatus, a scheduling section allocates frequency resources to frequency allocation target terminals based on set frequency allocation units, and a frequency allocation parameter setting section adjusts the set frequency allocation units set in the scheduling section based on cluster numbers. Due to this, in each cluster number, frequency resources can be allocated based on the most suitable frequency allocation units with respect to the signaling bit number. As a result, the amount of signaling for frequency resource allocation information can be reduced. Further, system throughput can be maintained by making the cluster number, which is a parameter having little effect on system throughput, a setting parameter for frequency allocation units.

公开(公告)号：US20220029760A1

公开(公告)日：2022-01-27

申请号：US17450143

申请日：2021-10-06

申请人： Sun Patent Trust

发明人： Seigo Nakao ,  Akihiko Nishio ,  Daichi Imamura

IPC分类号： H04L5/00 ,  H04L1/00 ,  H04W28/06 ,  H04W72/04

摘要： A base station communicates with a terminal, for which an uplink component carrier and downlink component carriers are configured. The base station adjusts a payload size of control information, transmitted in a downlink control channel, based on a basic payload size, and maps the control information onto a search space in at least one of the downlink component carriers. The basic payload size of the control information mapped onto a search space in a primary downlink component carrier is based on a number of information bits obtained from a bandwidth of the primary downlink component carrier, and on a number of information bits obtained from a bandwidth of the uplink component carrier. The basic payload size of the control information mapped onto a search space in a non-primary downlink component carrier is based on a number of information bits obtained from a bandwidth of the non-primary downlink component carrier.

公开(公告)号：US11171752B2

公开(公告)日：2021-11-09

申请号：US16707341

申请日：2019-12-09

申请人： Sun Patent Trust

发明人： Seigo Nakao ,  Akihiko Nishio ,  Daichi Imamura

IPC分类号： H04W4/00 ,  H04L5/00 ,  H04L1/00 ,  H04W28/06 ,  H04W72/04 ,  H04J3/16 ,  H04L12/28 ,  H04L27/26

摘要： A base station communicates with a terminal, for which an uplink component carrier and downlink component carriers are configured. The base station adjusts a payload size of control information, transmitted in a downlink control channel, based on a basic payload size, and maps the control information onto a search space in at least one of the downlink component carriers. The basic payload size of the control information mapped onto a search space in a primary downlink component carrier is based on a number of information bits obtained from a bandwidth of the primary downlink component carrier, and on a number of information bits obtained from a bandwidth of the uplink component carrier. The basic payload size of the control information mapped onto a search space in a non-primary downlink component carrier is based on a number of information bits obtained from a bandwidth of the non-primary downlink component carrier.

公开(公告)号：US20210204290A1

公开(公告)日：2021-07-01

申请号：US17203445

申请日：2021-03-16

申请人： Sun Patent Trust

发明人： Akihiko Nishio ,  Seigo Nakao

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

摘要： Disclosed are a transmission device and a transmission method with which it is possible to prevent delays in data transmission and to minimize the increase in the number of bits necessary for the notification of a CC to be used, in cases where a CC to be used is added during communication employing carrier aggregation. When a component carrier is to be added to a component carrier set, a setting section provided in a base station: modifies a CIF table that defines the correspondence between code points, which are used as labels for the respective component carriers contained in the component carrier set, and the identification information of the respective component carriers; and assigns a vacant code point to the component carrier to be added, while keeping the correspondence between the code points and the component carrier identification information defined in the CIF table before modification.

公开(公告)号：US11051313B2

公开(公告)日：2021-06-29

申请号：US16835963

申请日：2020-03-31

申请人： Sun Patent Trust

发明人： Tomofumi Takata ,  Daichi Imamura ,  Seigo Nakao ,  Sadaki Futagi ,  Takashi Iwai ,  Yoshihiko Ogawa

IPC分类号： H04W72/08 ,  H04J13/00 ,  H04L25/02 ,  H04L5/00 ,  H04J13/10 ,  H04L27/26 ,  H04W72/04 ,  H04B7/06 ,  H04J11/00 ,  H04W88/02

摘要： It is possible to provide a radio communication terminal device and a radio transmission method which can improve reception performance of a CQI and a reference signal. A phase table storage unit stores a phase table which correlates the amount of cyclic shift to complex coefficients {w1, w2} to be multiplied on the reference signal. A complex coefficient multiplication unit reads out a complex coefficient corresponding to the amount of cyclic shift indicated by resource allocation information, from the phase table storage unit and multiplies the read-out complex coefficient on the reference signal so as to change the phase relationship between the reference signals in a slot.

公开(公告)号：US10986560B2

公开(公告)日：2021-04-20

申请号：US16786685

申请日：2020-02-10

申请人： Sun Patent Trust

发明人： Yoshihiko Ogawa ,  Seigo Nakao ,  Akihiko Nishio ,  Masayuki Hoshino ,  Daichi Imamura ,  Atsushi Sumasu

IPC分类号： H04W48/02 ,  H04B7/0413 ,  H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04L1/16 ,  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.

公开(公告)号：US10938521B2

公开(公告)日：2021-03-02

申请号：US16534989

申请日：2019-08-07

申请人： Sun Patent Trust

发明人： Toru Oizumi ,  Seigo Nakao

IPC分类号： H04L1/18 ,  H04L1/00 ,  H04L5/00 ,  H04L1/16 ,  H04W24/04 ,  H04B7/024 ,  H04W28/04 ,  H04W72/04

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.