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公开(公告)号：US20210306123A1
公开(公告)日：2021-09-30
申请号：US17262858
申请日：2018-07-27
Applicant: NEC CORPORATION
IPC: H04L5/00 , H04L27/26 , H04B7/0408
Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable mediums for uplink transmission. In example embodiments, a method implemented at a terminal device is provided. The method comprises, in response to being configured with at least one SRS resource set by a network device and the at least one SRS resource set being associated with first and second CSI-RS resources, receiving, from the network device, a first CSI-RS transmitted via a first TRP over the first CSI-RS resource and a second CSI-RS transmitted via a second TRP over the second CSI-RS resource. The method further comprises determining, based on the received first and second CSI-RSs, first precoding information for uplink transmission via the first TRP and second precoding information for uplink transmission via the second TRP respectively. The method further comprises determining, from the first and second TRPs, at least one TRP for uplink transmission, the at least one TRP being associated with third precoding information selected from the first and second precoding information. In addition, the method further comprises transmitting, based on the third precoding information, at least one SRS to the network device via the at least one TRP.
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公开(公告)号：US20210298007A1
公开(公告)日：2021-09-23
申请号：US17257698
申请日：2018-07-06
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable medium for autonomous uplink (AUL) transmission and reception in a wireless communication system. In an embodiment of the present disclosure, the method for AUL transmission may include transmitting uplink control information (UCI) for an AUL transmission on an uplink control channel; and performing the AUL transmission on an uplink shared channel following the uplink control channel based on the UCI for the AUL transmission.
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公开(公告)号：US20210293917A1
公开(公告)日：2021-09-23
申请号：US17257709
申请日：2018-07-06
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable media for beam information based positioning. In example embodiments, a method implemented in a network device includes transmitting reference signals in a plurality of beams having different directions; receiving, from a terminal device, a signal indicating beam information of a beam selected from the plurality of beams by the terminal device based on signal qualities of the plurality of beams, the signal qualities being determined based on the reference signal transmitted in the plurality of beams; and determining a position of the terminal device based at least in part on the beam information.
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公开(公告)号：US20210274533A1
公开(公告)日：2021-09-02
申请号：US17326608
申请日：2021-05-21
Applicant: NEC CORPORATION
Abstract: Embodiments of the disclosure provide a method and device for cross-numerology scheduling. The method comprises: determining at least one of a first time position associated with a first communication and a time interval between the first communication and a second communication, the first communication using a first numerology, the second communication using a second numerology and being performed in response to the first communication.
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公开(公告)号：US20210218524A1
公开(公告)日：2021-07-15
申请号：US17195998
申请日：2021-03-09
Applicant: NEC CORPORATION
Inventor： Chuangxin JIANG , Yukai GAO , Zhennian SUN , Gang WANG
IPC: H04L5/00 , H04W76/27 , H04B7/0413 , H04W72/04
Abstract: Embodiments of the present disclosure relate to a method and apparatus of transmitting a reference signal and a method and apparatus of receiving a reference signal. In one embodiment of the present disclosure, the method of transmitting a reference comprises receiving a reference signal configuration indication, wherein reference signal resources are divided into at least two reference signal groups, and the reference signal configuration indication indicates a reference signal configuration including a reference signal group configuration; and transmitting the reference signal using a reference signal sequence in a reference signal group as indicated by the reference signal group configuration, wherein the reference signal sequence can be multiplexed with another layer or another user in different reference signal groups. With embodiments of the present disclosure, reference signals for different layers or users can be multiplexed in different reference signal groups and thus, more mu-users with unequal allocated bandwidths can be supported without significant channel estimation loss and Peak to Average Power Ratio (PAPR) loss.
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Patent Agency Ranking
公开(公告)号：US20210185684A1
公开(公告)日：2021-06-17
申请号：US16764740
申请日：2017-11-16
Applicant: NEC CORPORATION
Inventor： Zhaobang MIAO , Gang WANG
Abstract: Embodiments of the present disclosure relate to methods, devices and apparatus for resource allocation for a control resource region in a wireless communication system. In an embodiment of the present disclosure, a method may include determining resource units each containing a predetermined number of resource blocks based on available transmission resources. Resource blocks not contained in the resource units are distributed in the available transmission resources to divide resource blocks contained in the resource units into a plurality of resource segments. The method also comprise allocating one or more of the determined resource units to the control resource region and transmitting resource allocation information indicating the allocated one or more of resource units. With embodiments of the present disclosure, there is provided an effective solution for resource allocation for control resource region.
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公开(公告)号：US20210153043A1
公开(公告)日：2021-05-20
申请号：US16622158
申请日：2017-06-13
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods, terminal device, network device and apparatus for interference measurement. In an embodiment of the present disclosure, the method of interference measurement comprises performing interference measurement with interference measurement resource, wherein the interference measurement resource is a subset of resources for reference signal. With embodiments of the present disclosure, it may provide a suitable solution of interference measurement for the RS in the NR system in an efficient way.
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公开(公告)号：US20210135922A1
公开(公告)日：2021-05-06
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：US20210112599A1
公开(公告)日：2021-04-15
申请号：US16608620
申请日：2017-04-28
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods and devices for timing advance adjustment. In example embodiments, a method implemented in a network device is provided. According to the method, in response to receiving a Physical Random Access Channel (PRACH) sequence from a terminal device served by the network device, a first value indicating an adjustment of timing advance is determined based on the PRACH sequence and at least one value of subcarrier spacing. An indication of the first value is transmitted to the terminal device to enable the terminal device to adjust timing of uplink transmission.
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公开(公告)号：US20210022129A1
公开(公告)日：2021-01-21
申请号：US16969615
申请日：2018-02-14
Applicant: NEC CORPORATION
Abstract: Embodiments of the present disclosure relate to methods and devices for uplink control information transmission. In example embodiments, a method includes determining, based on a resource indicator from a network device, a resource indicator indicating uplink resources available for transmitting a first type of uplink control information using different formats. The method also includes selecting one of the uplink resources based on a simultaneous transmission indicator from the network device, the simultaneous transmission indicator indicating that simultaneous transmission of the first type and a second type of uplink control information is supported using at least one of the different formats. The method further includes transmitting, to the network device, the first and second types of uplink control information on the selected uplink resource using the corresponding format.
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