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公开(公告)号：US20220279497A1
公开(公告)日：2022-09-01
申请号：US17636681
申请日：2019-09-30
Applicant: NEC CORPORATION
Inventor： Shichang ZHANG , Gang WANG
Abstract: Embodiments of the present disclosure relate to communication methods, devices and computer readable medium in the wireless communication system. In an embodiment of the present disclosure, a communication method is performed at a receiving terminal device in the sidelink communication. In the communication method, sidelink control information (SCI) is received from a transmitting terminal device, the SCI indicating an additional DMRS symbol number for the sidelink data channel. Then, duration of the sidelink data channel is determined according to the number of symbols within a slot and the number of symbols for a sidelink feedback channel. Next, a DMRS pattern to be used for the sidelink data channel is determined based on the received additional DMRS symbol number for the sidelink data channel and the determined duration of the sidelink data channel.
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公开(公告)号：US20220264658A1
公开(公告)日：2022-08-18
申请号：US17626371
申请日：2019-07-12
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to method, device and computer readable medium for physical random access channel sequence generation. In example embodiments, a method includes determining an index of a cyclic shift for a root sequence. The method further includes determining a value of the cyclic shift based on a mapping between indices and cyclic shift values. The method further includes generating a random access preamble based on the root sequence and the value of the cyclic shift.
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公开(公告)号：US20220255713A1
公开(公告)日：2022-08-11
申请号：US17726838
申请日：2022-04-22
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods and devices for data transmission. In example embodiments, a method implemented in a network device is provided. According to the method, a target RS port group is determined from a plurality of RS ports for transmitting a RS. The RS ports are associated with at least one network device. Then, a configuration of the target RS port group is transmitted to the terminal device.
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公开(公告)号：US20220209902A1
公开(公告)日：2022-06-30
申请号：US17607647
申请日：2019-04-30
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods, devices and apparatuses for downlink retransmission for multi-TPR/panel transmission. In an embodiment of the present disclosure, a feedback for a downlink transmission is received from a terminal device, wherein in the downlink transmission, a data block is divided into at least a first data part and a second data part, the first data part is mapped to a first set of layers and a second data part is mapped to a second set of layers, and the first data part and the second data part are transmitted with different transmission configuration indication (TCI) states. A downlink retransmission of at least one of the first data part and the second data part is performed, in response to the feedback indicating a transmission failure, with the at least one of the first data part and the second data part being mapped to a different set of layers from one used in the downlink transmission. With embodiments of the present disclosure, it is possible to obtain more diversity gain, thereby achieving better retransmission performance for the multi-TPR/panel transmission.
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公开(公告)号：US20220116185A1
公开(公告)日：2022-04-14
申请号：US17555674
申请日：2021-12-20
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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Patent Agency Ranking
公开(公告)号：US20220116154A1
公开(公告)日：2022-04-14
申请号：US17509299
申请日：2021-10-25
Applicant: NEC Corporation
Inventor： Zhennian SUN , Gang WANG , Ming LEI
Abstract: Methods and apparatuses for determining HARQ timing in a communication system supporting Carrier Aggregation (CA) are provided. A method for receiving, at a BS, a HARQ feedback from a UE in a communication system supporting CA of a Pcell and at least one Scell is provided. The Pcell and Scell support either FDD or TDD. The method comprises: transmitting a downlink physical channel through one of the Pcell and Scell; receiving the HARQ feedback corresponding to the downlink physical channel of the Pcell at a first timing predetermined for the Pcell; and receiving the HARQ feedback corresponding to the downlink physical channel of the Scell at a second timing. The second timing is determined according to one or more of duplex modes of the Pcell and the Scell, a scheduling mode of the Scell, and predefined rules.
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公开(公告)号：US20220007348A1
公开(公告)日：2022-01-06
申请号：US17432784
申请日：2019-02-22
Applicant: NEC CORPORATION
Inventor： Gang WANG
Abstract: Embodiments of the present disclosure relate to resource allocation for feedback in groupcast communication. A method comprises identifying a plurality of destination devices for reception of data from a source device in groupcast communication; in response to the number of the plurality of destination devices being below a threshold, allocating resources to the plurality of destination devices to enable feedback transmission associated with the reception by the plurality of destination devices; and in response to the number of the plurality of destination devices exceeding the threshold, disabling feedback transmission associated with the reception by the plurality of destination devices. By flexibly allocating resources to the destination devices, it is possible to facilitate identifying destination devices that miss the data or control information and save the resource consumption.
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公开(公告)号：US20210392687A1
公开(公告)日：2021-12-16
申请号：US17420555
申请日：2019-01-07
Applicant: NEC CORPORATION
Abstract: Embodiments of the disclosure provide a method and device for partial slot in NR-U. According to embodiments of the present disclosure, the network device schedules different types of data channels and the terminal device dynamically monitors the control channel. In this way, transmission resources are saved without introducing additional overheads.
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公开(公告)号：US20210385827A1
公开(公告)日：2021-12-09
申请号：US17043772
申请日：2018-04-03
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods, devices, and computer readable medium for resource allocation. A method in a terminal device comprises: determining a granularity configuration and a distribution configuration for a mapping between an allocated virtual resource and a physical resource for a transmission from the terminal device, the granularity configuration indicating a resource granularity for the mapping, and the distribution configuration indicating the number of resource groups into which the allocated virtual resource is divided when being mapped to the physical resource; and determining the mapping between the allocated virtual resource and the physical resource based on the granularity configuration and the distribution configuration.
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公开(公告)号：US20210320764A1
公开(公告)日：2021-10-14
申请号：US17259698
申请日：2018-07-13
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure provide method, device and computer readable medium for beam failure recovery. In example embodiments, a method implemented at a terminal device is provided. The method comprises determining a configuration for receiving Physical Downlink Control Channels (PDCCHs) from a network device, the network device communicating with the terminal device via first and second Transmission and Reception Points (TRPs), wherein the configuration indicates which one of the first and second TRPs are the PDCCHs to be received from. The method further comprises determining whether a beam failure occurs in at least one of the first and second TRPs. In addition, the method further comprises, in response to determining that a beam failure occurs in at least one of the first and second TRPs, performing beam failure recovery (BFR) for the first and second TRPs at least based on the configuration.
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