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公开(公告)号：US20200169443A1
公开(公告)日：2020-05-28
申请号：US16777499
申请日：2020-01-30
Applicant: NEC CORPORATION
Inventor： Yukai GAO , Chuangxin JIANG , Zhennian SUN , Gang WANG
Abstract: Embodiments of the present disclosure relate to a method and apparatus of transmitting uplink (UL) information and a method and apparatus of receiving UL information. In one embodiment of the present disclosure, the method of transmitting UL information comprises transmitting a reference signal using a first sequence; and transmitting UL control information using a second sequence; wherein a reference signal and the UL control information are staggered-multiplexed in frequency domain. With embodiments of the present disclosure, the uplink information can be transmitted in reduced uplink symbols so as to adapt for a proposed subframe structure with reduced uplink symbols and thus, the transmission latency can be reduced greatly.
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公开(公告)号：US20200154485A1
公开(公告)日：2020-05-14
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：US20200099465A1
公开(公告)日：2020-03-26
申请号：US16621511
申请日：2017-06-13
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods and devices for reference signal (RS) transmission. In example embodiments, a method implemented in a network device is provided. According to the method, a plurality of RS ports to be used for RS transmission are divided into a plurality of groups by the network device. An indication of at least one group of RS ports selected from the plurality of groups is transmitted to a terminal device served by the network device. A RS configuration for the terminal device is determined based on the at least one group of RS ports. Information on the RS configuration is transmitted to the terminal device.
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公开(公告)号：US20190320459A1
公开(公告)日：2019-10-17
申请号：US16420534
申请日：2019-05-23
Applicant: NEC CORPORATION
Inventor： Zhennian SUN , Chuangxin JIANG , Yukai GAO , Gang WANG
Abstract: A method at a base station for performing data transmission to a user equipment in a communications system supporting carrier aggregation of at least one first carrier on which a short TTI is applied and at least one second carrier on which a long TTI is applied. The method transmits at least one DL scheduling grant corresponding to data transmission to the user equipment in a DL control region of at least one of a short TTI on a first carrier and a long TTI on a second carrier and performs DL data transmission towards the user equipment in a data transmission region of a short TTI on the first carrier and in the data transmission region of a long TTI on the second carrier as indicated by the at least one DL scheduling grant.
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公开(公告)号：US20190280801A1
公开(公告)日：2019-09-12
申请号：US16318995
申请日：2016-07-19
Applicant: NEC CORPORATION
Inventor： Yukai GAO , Chuangxin JIANG , 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 each of the candidate transmission patterns contains a DL transmission part and/or a UL transmission part, and the candidate transmission patterns differ from one another in terms of subcarrier spaces of the respective DL transmission parts and/or the UL transmission parts; and performing communication between a network device and a terminal device by using the target transmission pattern.
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Patent Agency Ranking
公开(公告)号：US20190229961A1
公开(公告)日：2019-07-25
申请号：US16338351
申请日：2016-09-30
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods and apparatuses of synchronization signal transmission and receiving in a wireless communication system. The method of synchronization signal transmission in a wireless communication system may comprise transmitting a signal set containing one or more synchronization signals, wherein the one or more synchronization signals are transmitted in a predetermined signal transmission pattern within a signal transmission period, and wherein the predetermined signal transmission pattern indicates information on synchronization signal transmission. With embodiments of the present disclosure, it may indicate the information on synchronization signal transmission information by means of the signal transmission mode. Thus, especially for an initial access process, it can provide a common frame for both single beam based deployment and multi-beam based deployment.
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公开(公告)号：US20250142659A1
公开(公告)日：2025-05-01
申请号：US18865770
申请日：2022-05-18
Applicant: NEC Corporation
IPC: H04W76/20 , H04L1/1812 , H04W74/0833
Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable media of communication. A terminal device receives, from a network device, a first configuration information transmitted on a first cell, wherein the first configuration information includes a set of TCI states, and the set of TCI states is associated with a second cell different from the first cell. The terminal device receives a first activation command to activate one or more TCI states, wherein the one or more TCI states comprise at least one TCI state from the set of TCI states. The terminal device applies the one or more activated TCI states from a first slot after a predefined timing. In this way, a beam for the second cell can be indicated according to the TCI state indicated by the first cell before serving cell change; accordingly, the latency, the overhead and the interruption time during the inter-cell mobility can be reduced.
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公开(公告)号：US20250106865A1
公开(公告)日：2025-03-27
申请号：US18725928
申请日：2021-12-30
Applicant: NEC CORPORATION
IPC: H04W72/231 , H04L1/1812 , H04W16/28 , H04W72/12 , H04W76/20
Abstract: Embodiments of the present disclosure relate to methods, devices and computer storage media for communication. According to embodiments of the present disclosure, a terminal device transmits, to a network device, a first hybrid automatic repeat request acknowledgement (HARQ-ACK) information corresponding to a first downlink control information (DCI) in a first physical downlink control channel (PDCCH), wherein the first DCI indicates a first transmission configuration indicator (TCI) state. If a condition is fulfilled, the terminal device applies the first TCI state. In this way, the terminal device understands when and/or whether to apply the indicated TCI state.
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公开(公告)号：US20250062818A1
公开(公告)日：2025-02-20
申请号：US18721471
申请日：2021-12-20
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods, devices and computer storage media for communication. According to this solution, a terminal device detects a beam failure on a first component carrier (CC). The terminal device applies at least one ne quasi co-location (QCL) parameters as the ones associated with a first reference signal for downlink reception on the first CC until a first timing, or applies a spatial domain filter as the one associated with the first reference signal or as for a physical random access channel (PRACH) transmission for uplink transmission on the first CC until the first timing. In this way, the failed CC can still be under control of common beam update/activation.
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公开(公告)号：US20240357584A1
公开(公告)日：2024-10-24
申请号：US18682571
申请日：2021-08-11
Applicant: NEC CORPORATION
IPC: H04W72/1268 , H04L5/00 , H04W72/231 , H04W72/566
CPC classification number: H04W72/1268 , H04L5/0051 , H04W72/231 , H04W72/566
Abstract: Embodiments of the present disclosure relate to a method, device and computer readable storage medium of communication. The method comprises receiving, at a terminal device and from a network device, downlink control information (DCI) for scheduling a Physical Uplink Shared Channel (PUSCH) transmission, the DCI comprising: a first field indicating a first number of layers for the PUSCH transmission; and a second field indicating a second number of layers for the PUSCH transmission; determining power for the PUSCH transmission based on the first number and the second number, and transmitting, to the network device, the PUSCH transmission based on the DCI, wherein a total number of layers for the PUSCH transmission is determined based on a sum of the first number and the second number. In this way, number of layers and power for PUSCH transmission can be determined.
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