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公开(公告)号：US20200154495A1
公开(公告)日：2020-05-14
申请号：US16744418
申请日：2020-01-16
Applicant: Sun Patent Trust
Inventor： Lilei Wang , Hidetoshi Suzuki , Masayuki Hoshino
Abstract: Provided are D2D communication methods and D2D-enabled wireless devices. The D2D communication method performed by a D2D-enabled wireless device includes transmitting signals in D2D subframes with a randomization pattern. The randomization pattern is designed based on relative subframe positions in a virtual pure D2D subframe sequence composed of multiple D2D subframes in one or more radio frames. In another embodiment, the eNB scheduling based resource allocation and the D2D-enabled wireless device selection on its own based resource allocation share a same randomization pattern design.
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公开(公告)号：US20200076562A1
公开(公告)日：2020-03-05
申请号：US16674873
申请日：2019-11-05
Applicant: Sun Patent Trust
Inventor： Joachim Loehr , Hidetoshi Suzuki , Prateek Basu Mallick
Abstract: The invention relates to a method for transmitting a periodic channel quality report (CSI) and/or a sounding reference symbol (SRS) from a UE to an eNodeB. To avoid double decoding at the eNodeB in transient phases, a deterministic behavior of the UE is defined by the invention, according to which the eNodeB can unambiguously determine whether the UE will transmit the CSI/SRS or not. According to one embodiment, the UL grants and/or DL assignments received until and including subframe N−4 only are considered; UL grants and/or DL assignments received by the UE after subframe N−4 are discarded for the determination. Additionally, DRX-related timers at subframe N−4 are considered for the determination. In a second embodiment, DRX MAC control elements from the eNodeB, instructing the UE to enter DRX, i.e., become Non-Active, are only considered for the determination if they are received before subframe N−4, i.e., until and including subframe N−(4+k).
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公开(公告)号：US10581563B2
公开(公告)日：2020-03-03
申请号：US16377713
申请日：2019-04-08
Applicant: Sun Patent Trust
Inventor： Kazuki Takeda , Hidetoshi Suzuki , Ayako Horiuchi , Akihiko Nishio
Abstract: 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.
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公开(公告)号：US10575351B2
公开(公告)日：2020-02-25
申请号：US15280889
申请日：2016-09-29
Applicant: Sun Patent Trust
Inventor： Lilei Wang , Hidetoshi Suzuki , Masayuki Hoshino
Abstract: Provided are D2D communication methods and D2D-enabled wireless devices. The D2D communication method performed by a D2D-enabled wireless device includes transmitting signals in D2D subframes with a randomization pattern. The randomization pattern is designed based on relative subframe positions in a virtual pure D2D subframe sequence composed of multiple D2D subframes in one or more radio frames. In another embodiment, the eNB scheduling based resource allocation and the D2D-enabled wireless device selection on its own based resource allocation share a same randomization pattern design.
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公开(公告)号：US20190268121A1
公开(公告)日：2019-08-29
申请号：US16287784
申请日：2019-02-27
Applicant: Sun Patent Trust
Inventor： Alexander Golitschek Edler von Elbwart , Sujuan Feng , Christian Wengerter , Hidetoshi Suzuki
Abstract: The present invention relates to providing control information within a search space for blind decoding in a multi-carrier communication system. In particular, the control information is carried within a sub-frame of the communication system, the sub-frame including a plurality of control channel elements. The control channel elements may be aggregated into candidates for blind decoding. The number of control channel elements in a candidate is called aggregation level. In accordance with the present invention, the candidates of lower aggregation levels are localized, meaning that the control channel elements of one candidate are located adjacently to each other in the frequency domain. Some candidates of the higher aggregation level(s) are distributed in the frequency.
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Patent Agency Ranking
公开(公告)号：US10355831B2
公开(公告)日：2019-07-16
申请号：US15994774
申请日：2018-05-31
Applicant: Sun Patent Trust
Inventor： Kazuki Takeda , Hidetoshi Suzuki , Ayako Horiuchi , Akihiko Nishio
Abstract: 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.
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公开(公告)号：US10291385B2
公开(公告)日：2019-05-14
申请号：US15845706
申请日：2017-12-18
Applicant: Sun Patent Trust
Inventor： Alexander Golitschek Edler von Elbwart , Hidetoshi Suzuki , Lilei Wang
Abstract: The invention relates to methods for communicating within a communication system when re-configured from a source to a target uplink/downlink configuration. The invention is also providing mobile station for performing these methods, and computer readable media the instructions of which cause the mobile station to perform the methods described herein. Specifically, the invention suggests to perform PUSCH transmissions in response to Downlink Control Information, DCI, transmissions such that the source uplink/downlink configuration is applied to PUSCH transmissions relating to DCI transmissions received up to and including subframe N−6, a predefined uplink/downlink configuration is applied to PUSCH transmissions relating to DCI transmissions received during subframes N−5 to N−1; and the target uplink/downlink configuration is applied to PUSCH transmissions relating to DCI transmissions received from subframe N onward.
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公开(公告)号：US20190082411A1
公开(公告)日：2019-03-14
申请号：US16189808
申请日：2018-11-13
Applicant: Sun Patent Trust
Inventor： Sujuan Feng , Lilei Wang , Hidetoshi Suzuki , Prateek Basu Mallick
IPC: H04W56/00 , H04B7/155 , H04B17/309
Abstract: The present invention relates to selection of synchronization source among various synchronization sources which include sources determining the synchronization signal from the network such as base stations (network nodes) or user equipments which receive the synchronization signal possibly over other hops from the base station, and which further includes sources which do not determine their synchronization signal from the network. The selection of the synchronization source is performed by choosing the source with the most reliable synchronization signal based on a metric calculated for each of the sources considered. In particular, the metric is based on the type of the source, number of hops between the network and the source and/or received signal quality. After selecting the source, the timing of the device is adapted accordingly.
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69.发明授权公开(公告)号：US10004046B2
公开(公告)日：2018-06-19
申请号：US15380094
申请日：2016-12-15
Applicant: Sun Patent Trust
Inventor： Lilei Wang , Hidetoshi Suzuki , Sujuan Feng , Masayuki Hoshino , Joachim Loehr
CPC classification number: H04W52/247 , H04W4/70 , H04W52/10 , H04W52/146 , H04W52/248 , H04W52/362 , H04W52/383 , H04W52/58
Abstract: The present disclosure provides a power control method in device to device (D2D) communication and a user equipment for performing the power control method. The method includes computing a power value of device to device (D2D) transmission of a user equipment performing D2D communication in a subframe in a serving cell, based on a power control adjustment state of a Long Term Evolution (LTE) wide area network (WAN) uplink channel of the user equipment and an offset or a ratio indicated by a transmit power control (TPC) command indicated in D2D grant or downlink control information (DCI) format 3/3A.
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公开(公告)号：US09986551B2
公开(公告)日：2018-05-29
申请号：US15617955
申请日：2017-06-08
Applicant: Sun Patent Trust
Inventor： Kazuki Takeda , Hidetoshi Suzuki , Ayako Horiuchi , Toru Oizumi
CPC classification number: H04W72/042 , H04L1/1854 , H04L5/001 , H04L5/0023 , H04L5/0035 , H04L5/0055 , H04L5/0096
Abstract: A wireless communication terminal capable of increasing the utilization efficiency of ACK/NACK resources and suppressing unnecessary PUSCH band reduction while avoiding ACK/NACK collision. The wireless communication terminal has a configuration provided with: a reception unit for receiving a control signal including ARI via an E-PDCCH set from among one or a plurality of E-PDCCH sets; a control unit for determining an offset value indicated by the ARI on the basis of whether or not a resource region that may be taken by a dynamic ACK/NACK resource corresponding to the E-PDCCH set that has received the control signal and a resource region that may be taken by a dynamic ACK/NACK resource corresponding to another E-PDCCH set overlap, and imparting an offset to the ACK/NACK resource according to the value of the ARI; and a transmission unit for transmitting the ACK/NACK signal using the determined ACK/NACK resource.
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