-
公开(公告)号：US20210014014A1
公开(公告)日：2021-01-14
申请号：US17034968
申请日：2020-09-28
Applicant: Sun Patent Trust
Inventor： Akihiko NISHIO , Seigo NAKAO
Abstract: Disclosed is a wireless communication base station apparatus whereby it is possible to prevent degradation of throughput of LTE terminals, even when LTE terminals and LTE+ terminals are present together. In this apparatus, a setting section (105) sets in each subframe a resource block in which is arranged a reference signal that is employed solely by LTE+ terminals, based on the pattern of arrangement of reference signals employed solely by LTE+ terminals. In the case of symbols that are mapped to antennas (110-1) to (110-4), an arrangement section (106) arranges the characteristic cell reference signals employed by both LTE terminals and LTE+ terminals in all of the resource blocks in a single frame. In contrast, in the case of the symbols that are mapped to the antennas (110-5) to (110-8), the arrangement section (106) arranges in some of the resource blocks, that are set in accordance with the setting results input from a setting section (105), the characteristic cell reference signals that are employed solely by the LTE+ terminals.
-
公开(公告)号：US20200252935A1
公开(公告)日：2020-08-06
申请号：US16853001
申请日：2020-04-20
Applicant: Sun Patent Trust
Inventor： Yoshihiko OGAWA , Seigo NAKAO , Daichi IMAMURA , Akihiko NISHIO , Masayuki HOSHINO , Katsuhiko HIRAMATSU , Kenichi MIYOSHI , Yasuaki YUDA , Sadaki FUTAGI , Takashi IWAI
Abstract: Disclosed are a wireless communication base station device and a division number determination method that improves the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit determines the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. Here, the determination unit increases the number of divisions in the frequency domain of the transmission signal from the wireless communication terminal device as the number of pilot blocks included in the transmission signal increases. In addition, a scheduling unit schedules allocation to the frequency resources of the divided transmission signal according to the number of divisions determined by the determination unit.
-
公开(公告)号：US20200178219A1
公开(公告)日：2020-06-04
申请号：US16785189
申请日：2020-02-07
Applicant: SUN PATENT TRUST
Inventor： Masayuki HOSHINO , Akihiko NISHIO , Seigo NAKAO , Daichi IMAMURA , Yasuaki YUDA
Abstract: 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.
-
公开(公告)号：US20190327674A1
公开(公告)日：2019-10-24
申请号：US16458295
申请日：2019-07-01
Applicant: SUN PATENT TRUST
Inventor： Akihiko NISHIO , Seigo NAKAO , Yoshiko SAITO , Alexander GOLITSCHEK EDLER VON ELBWART
Abstract: Disclosed is a wireless communication base station device capable of reducing the power consumption of a terminal when broadband transmission is performed with only an uplink. With this device, a setting unit sets mutually different terminal IDs per a plurality of uplink unit bands for a terminal that communicates using a plurality of uplink unit bands and prescribed downlink unit bands which are fewer in number than the uplink unit bands; a control unit that respectively allocates resource allocation information per a plurality of uplink unit bands to a PDCCH arranged in a prescribed downlink unit band; and a PDCCH creation unit that creates a PDCCH signal by respectively masking the resource allocation information per a plurality of uplink unit bands with the terminal ID that has been set per a plurality of uplink unit bands.
-
公开(公告)号：US20190068344A1
公开(公告)日：2019-02-28
申请号：US16154877
申请日：2018-10-09
Applicant: Sun Patent Trust
Inventor： Takashi IWAI , Akihiko NISHIO , Yoshihiko OGAWA , Seigo NAKAO , Masayuki HOSHINO
Abstract: 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.
-
Patent Agency Ranking
公开(公告)号：US20180352543A1
公开(公告)日：2018-12-06
申请号：US16101225
申请日：2018-08-10
Applicant: Sun Patent Trust
Inventor： Akihiko NISHIO , Toru OIZUMI , Ayako HORIUCHI
CPC classification number: H04W72/0406 , H04L1/0026 , H04L1/1671 , H04L5/001 , H04L5/0055 , H04L5/0057
Abstract: Provided are a wireless communication terminal device and a control channel forming method with which, in the forming of a control channel for transmitting control information including an ACK/NACK and CSI (channel state information), wasteful use of resources is reduced compared to that in related art. In the case where CSI is transmitted independently, and in the case where CSI and an ACK/NACK are transmitted at the same time, the same format is used to form a control channel. Furthermore, in the case where an ACK/NACK is transmitted independently, another format is used if a component carrier (CC) number is equal to or less than 2, and the same format is used if the CC number is equal to or greater than 3.
-
公开(公告)号：US20180343668A1
公开(公告)日：2018-11-29
申请号：US16053241
申请日：2018-08-02
Applicant: SUN PATENT TRUST
Inventor： Yoshihiko OGAWA , Akihiko NISHIO , Daichi IMAMURA , Seigo NAKAO , Masayuki HOSHINO , Takashi IWAI , Sadaki FUTAGI
CPC classification number: H04W72/1289 , H04L1/00 , H04L1/0004 , H04L1/0041 , H04L1/0045 , H04L5/0023 , H04L5/0028 , H04L5/0041 , H04L5/006 , H04L5/0064 , H04L5/0092 , H04L27/2601 , H04L27/2607 , H04L27/2614 , H04L27/2636 , H04L27/2647 , H04W28/06 , H04W72/042 , H04W72/0453 , H04W72/0466 , H04W72/0473 , H04W72/12 , H04W72/1268 , H04W84/042
Abstract: A wireless communication base station device, terminal device, and method have reduced signaling while maintaining high scheduling gain. A judgment unit pre-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, and the maximum value for the number of clusters that is output by the judgment 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.
-
公开(公告)号：US20180317168A1
公开(公告)日：2018-11-01
申请号：US16030101
申请日：2018-07-09
Applicant: SUN PATENT TRUST
Inventor： Akihiko NISHIO , Seigo NAKAO , Yoshiko SAITO , Alexander GOLITSCHEK EDLER VON ELBWART
CPC classification number: H04W52/0209 , H04L1/0061 , H04L5/001 , H04L5/0037 , H04L5/0064 , H04L5/0092 , H04L5/14 , H04W52/0229 , H04W72/042 , Y02D70/00 , Y02D70/1262 , Y02D70/1264
Abstract: Disclosed is a wireless communication base station device capable of reducing the power consumption of a terminal when broadband transmission is performed with only an uplink. With this device, a setting unit sets mutually different terminal IDs per a plurality of uplink unit bands for a terminal that communicates using a plurality of uplink unit bands and prescribed downlink unit bands which are fewer in number than the uplink unit bands; a control unit that respectively allocates resource allocation information per a plurality of uplink unit bands to a PDCCH arranged in a prescribed downlink unit band; and a PDCCH creation unit that creates a PDCCH signal by respectively masking the resource allocation information per a plurality of uplink unit bands with the terminal ID that has been set per a plurality of uplink unit bands.
-
公开(公告)号：US20180294915A1
公开(公告)日：2018-10-11
申请号：US16006123
申请日：2018-06-12
Applicant: SUN PATENT TRUST
Inventor： Akihiko NISHIO , Hidetoshi SUZUKI , Christian WENGERTER
CPC classification number: H04L1/001 , H04L1/0004 , H04L1/0038 , H04L1/04 , H04L5/0005 , H04L5/0039 , H04L5/0041 , H04L5/0053 , H04L5/006 , H04L5/0064 , H04L5/0091 , H04L5/0094 , H04L27/2626 , H04W52/0206 , Y02D70/00
Abstract: A radio communication base station device which can reduce the number of judgment times for a control signal in a mobile station, thereby suppressing power consumption by the mobile station. The radio communication base station device (100) includes: a mapping setting unit (122) which sets a mapping method in a mapping unit (102); the mapping unit (102) which maps a control signal to respective mobile stations to any of subcarriers constituting the OFDM symbol according to the mapping method set by the mapping setting unit (122); an MCS setting unit (121) which references a mapping table in which correlation between a plurality of MCS having different MCS levels and mapping methods is set according to the judgment result of the mapping setting unit (122) and sets MCS in encoding/modulation units (101-1 to 101-n).
-
公开(公告)号：US20180019846A1
公开(公告)日：2018-01-18
申请号：US15717323
申请日：2017-09-27
Applicant: Sun Patent Trust
Inventor： Akihiko NISHIO , Seigo NAKAO
CPC classification number: H04L1/1861 , H04B7/0426 , H04B7/0632 , H04J11/003 , H04L5/0007 , H04L5/0048 , H04L5/005 , H04L5/0051 , H04W52/325 , H04W72/10
Abstract: A wireless communication base station apparatus prevents degradation of throughput of LTE terminals, even when LTE terminals and LTE+ terminals are present together. A setting section sets in each subframe a resource block in which is arranged a reference signal that is employed solely by LTE+ terminals, based on the pattern of arrangement of reference signals employed solely by LTE+ terminals. As to symbols that are mapped to antennas (110-1) to (110-4), an arrangement section arranges the characteristic cell reference signals employed by both LTE terminals and LTE+ terminals in all of the resource blocks in a single frame. In contrast, as to symbols that are mapped to antennas (110-5) to (110-8), the arrangement section arranges in some of the resource blocks, that are set in accordance with the setting results input from a setting section, the characteristic cell reference signals that are employed solely by the LTE+ terminals.
-
-
-
-
-
-
-
-
-
Search Results
94
records
(took 0.023 seconds)
