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公开(公告)号：US11588670B2
公开(公告)日：2023-02-21
申请号：US16346890
申请日：2016-11-03
Applicant: NEC CORPORATION
Inventor： Hongmei Liu , Yukai Gao , Gang Wang
Abstract: Embodiments of the disclosure provide a method and device for indicating numerology. The method comprises: determining numerology information of a carrier, the numerology information indicating numerologies of one or more basic units for the carrier; and transmitting the numerology information to a terminal device to enable reception based on the numerology information.
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公开(公告)号：US11523435B2
公开(公告)日：2022-12-06
申请号：US16620374
申请日：2017-06-09
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to a method, terminal device and apparatus for transmitting a physical random access channel (PRACH) and a method, network device and apparatus for receiving the PRACH. In an embodiment of the present disclosure, the method of transmitting PRACH comprises transmitting a physical random access channel, wherein the transmitted physical random access channel is different from a physical random access channel for initial access in at least one of parameter and structure. With embodiments of the present disclosure, the overhead of the PRACH transmission can be reduced in some cases, like a beam recovery request transmission and on-demand system information request transmission.
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公开(公告)号：US11432160B2
公开(公告)日：2022-08-30
申请号：US15319211
申请日：2015-07-31
Applicant: NEC CORPORATION
Inventor： Lei Jiang , Hongmei Liu , Chuangxin Jiang , Gang Wang
Abstract: Embodiments of the present disclosure provide a method of performing transmission between a base station and a terminal device according to a frame structure over an unlicensed spectrum in a wireless network that supports communications over both a licensed spectrum and the unlicensed spectrum. The method comprises signaling information indicating the frame structure and performing transmission between the base station and the terminal device on an unlicensed carrier in the unlicensed spectrum according to the frame structure. There is also provided the corresponding apparatus.
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公开(公告)号：US11363482B2
公开(公告)日：2022-06-14
申请号：US16959830
申请日：2018-01-04
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods and apparatuses for Control State Information (CSI) transmission. In example embodiments, a method implemented in a terminal device is provided. According to the method, in response to receiving DCI from a network device, a configuration for transmitting CSI to the network device is determined at least based on the DCI. The DCI indicates a CSI-RS for determining the CSI and timing information associated with the CSI. The CSI is determined by measuring the CSI-RS in response to receiving the CSI-RS from the network device. The CSI is transmitted to the network device based on the configuration.
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公开(公告)号：US11349534B2
公开(公告)日：2022-05-31
申请号：US17257787
申请日：2018-07-06
Applicant: NEC CORPORATION
IPC: H04B7/0456 , H04B17/309 , H04B7/06
Abstract: Embodiments of the present disclosure provide a method, a device and a computer readable medium for communication based on a multi-TRP codebook. According to a method for communication, a terminal device measures downlink channel conditions related to a plurality of network devices in communication with the terminal device. The terminal device selects a precoding matrix from a codebook based on the downlink channel conditions, elements in a column of the codebook represent respective beam sets for the plurality of network devices, and the precoding matrix indicates respective beams for the plurality of network devices. The terminal device transmits an index of the precoding matrix to at least one of the plurality of network devices. The embodiments of the present disclosure enable multi-TRP PMI feedback based on the proposed multi-TRP codebook.
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Patent Agency Ranking
公开(公告)号：US11329783B2
公开(公告)日：2022-05-10
申请号：US16319004
申请日：2016-07-19
Applicant: NEC CORPORATION
Inventor： Yukai Gao , Chuangxin Jiang , Zhennian Sun , Lei Jiang , Hongmei Liu , Gang Wang
Abstract: Embodiments of the disclosure provide a method and device for performing communication. The method comprises: determining a target transmission pattern from a set of candidate transmission patterns, wherein the target transmission pattern is indicated by a signal including one or more of: a reference signal, a signal for performing CRC, and a feedback signal; and performing communication between a network device and a terminal device by using the target transmission pattern.
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公开(公告)号：US11317388B2
公开(公告)日：2022-04-26
申请号：US16953057
申请日：2020-11-19
Applicant: NEC CORPORATION
Inventor： Yukai Gao , Chuangxin Jiang , Gang Wang
Abstract: Embodiments of the present disclosure relate to the communication processes in a wireless communication system based on short TTIs. According to one embodiment of the present disclosure, there provide a method for communication by a base station. The method comprise: receiving, from a user equipment, an uplink demodulation reference signal, DMRS, in an uplink transmission time interval, TTI, of an uplink subframe, which supports two or more uplink TTIs. At least one uplink TTI supported by the uplink subframe is configured to only transmit uplink control information and/or uplink data without any uplink DMRS. In the other aspects of the present disclosure, there also provides methods for communication by a user equipment and corresponding apparatuses.
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公开(公告)号：US11290311B2
公开(公告)日：2022-03-29
申请号：US16635840
申请日：2017-08-03
Applicant: NEC CORPORATION
Abstract: Methods and an apparatus for reference signal (RS) configuration. A method implemented in a network device is provided in which a plurality of reference signal (RS) ports to be used for RS transmission are determined based on at least one of different RS configuration patterns, different port multiplexing types and different number of symbols to be used for RS transmission. Each of the plurality of RS ports is indexed with a respective port index and at least two of the plurality of RS ports share a same port index. A plurality of RS configurations are determined at least based on the plurality of RS ports. In addition, at least one RS configuration from the plurality of RS configurations is allocated for a terminal device served by the network device. The at least one RS configuration indicates at least one RS port to be used for RS transmission.
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公开(公告)号：US20220078628A1
公开(公告)日：2022-03-10
申请号：US17530107
申请日：2021-11-18
Applicant: NEC CORPORATION
Inventor： Gang Wang
Abstract: Embodiments of the present disclosure relate to a method, terminal device and apparatus for UL data transmission and a method, network device and apparatus for UL data scheduling. In an embodiment of the present disclosure, the method of DL data transmission may comprise receiving, from a network device, information on an ending position of uplink data transmission on the unlicensed band; and determining the ending position of uplink data transmission from the information on the starting position of uplink data transmission, wherein the determined ending position of uplink data transmission is associated with a carrier numerology used by the terminal device. With embodiments of the present disclosure, it could enable the UL data transmission on the unlicensed band in the NR system and thus improve the performance of the NR system.
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公开(公告)号：US11239978B2
公开(公告)日：2022-02-01
申请号：US16960754
申请日：2018-01-09
Applicant: NEC CORPORATION
Abstract: Embodiments of the disclosure generally relate to feedback of a HARQ acknowledgement. A network device transmits, to a terminal device, a first trigger indicating a feedback mode of a HARQ acknowledgement. The feedback mode is selected from at least one of: a trigger mode, a timing mode, and a mixed mode. In response to successful access to an unsilenced band allocated to the HARQ acknowledgement, the network device transmits, to the terminal device, a second trigger indicating at least one target terminal device that is to feedback the HARQ acknowledgement based on the feedback mode indicated by the first trigger.
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