公开(公告)号：US20220294590A1

公开(公告)日：2022-09-15

申请号：US17774391

申请日：2019-11-05

Applicant: NEC CORPORATION

Inventor： Yukai GAO ,  Gang WANG

IPC: H04L5/00

Abstract: Embodiments of the present disclosure relate to a method, device and computer readable mediun for communication. A method comprises in response to a physical resource block (PRB) being configured for communicating at least one Phase Tracking Reference Signal (PTRS) between a first device and a second device, determining, at the first device and from a plurality of resource elements (REs) comprised by the PRB, a first RE and a second RE for mapping at least one PTRS port; mapping the at least one PTRS port to at least one of the first and second REs; and communicating the at least one PTRS between the first device and the second device by using the at least one PTRS port. Embodiments of the present disclosure provide details on how to use two REs within one
PRB for PTRS communication to improve phase noise estimation performance, especially in case of scheme 2a/2b.

公开(公告)号：US20220239448A1

公开(公告)日：2022-07-28

申请号：US17614149

申请日：2019-05-29

Applicant: NEC CORPORATION

Inventor： Yukai GAO ,  Gang WANG

IPC: H04L5/00

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable media for communication. A method of communication comprises receiving, at a first device, control information from a second device; determining a transmission control indication (TCI) codepoint from the control information, the TCI codepoint indicating at least a first TCI state and a second TCI state to be used for communicating data with the second device over a physical shared channel; in response to a number of repetitions of the data being configured to be scheduled by the control information, determining a first configuration for communicating the repetitions of the data with the second device, the first configuration assigning the first and second TCI states to the repetitions of the data; and communicating, at least based on the first configuration, the repetitions of the data with the second device over the physical shared channel.

公开(公告)号：US20210288856A1

公开(公告)日：2021-09-16

申请号：US16346890

申请日：2016-11-03

Applicant: NEC CORPORATION

Inventor： Hongmei LIU ,  Yukai GAO ,  Gang WANG

IPC: H04L27/26 ,  H04L5/00

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.

公开(公告)号：US20210258060A1

公开(公告)日：2021-08-19

申请号：US17252117

申请日：2018-06-15

Applicant: NEC CORPORATION

Inventor： Yukai GAO ,  Gang WANG

IPC: H04B7/06 ,  H04L5/00

Abstract: Embodiments of the present disclosure relate to methods, devices and apparatuses of channel state information (CSI) reporting for multiple reception point (TRP) transmission. In an embodiment of the present disclosure, a method may include transmitting a first CSI report on a first TRP of multiple TRPs serving a terminal device for a channel state information reference signal (CSI-RS) resource set for CSI acquisition. The method may further include transmitting a second CSI report on a second TRP of the multiple TRPs serving the terminal device for the CSI-RS resource set. With embodiments of the present disclosure, it is possible to support CSI reporting for multiple TRP transmission.

公开(公告)号：US20210203461A1

公开(公告)日：2021-07-01

申请号：US17186065

申请日：2021-02-26

Applicant: NEC CORPORATION

Inventor： Yukai GAO ,  Gang Wang

IPC: H04L5/00 ,  H04W72/04

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for Reference Signal (RS) transmission. In example embodiments, a method implemented in a network device is provided. According to the method, the network device determines at least one set of CSI-RS resources for transmitting Tracking Reference Signal (TRS) to a terminal device. The network device further determines a first offset between a first slot to transmit a first signal for enabling transmission of the TRS and a second slot to transmit the TRS in the at least one set of CSI-RS resources. The first offset is different from a second offset between a third slot to transmit a second signal for enabling transmission of CSI-RS and a fourth slot to transmit the CSI-RS. The network device transmits a configuration indicating the at least one set of CSI-RS resources and the first offset to the terminal device.

公开(公告)号：US20210194737A1

公开(公告)日：2021-06-24

申请号：US17055389

申请日：2018-05-14

Applicant: NEC CORPORATION

Inventor： Yukai GAO ,  Gang WANG

IPC: H04L25/02 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04

Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable mediums for sounding reference signal (SRS) transmission. In example embodiments, a method implemented at a terminal device is provided. According to the method, in response to at least one set of SRS resources being configured for transmitting a SRS to a network device and antenna switching being enabled for the terminal device, the terminal device determines at least one guard period required for transmitting the SRS. Uplink transmission to the network device is expected to be scheduled outside the at least one guard period. In response to the uplink transmission being scheduled outside the at least one guard period, the terminal device transmits the SRS to the network device over the at least one set of SRS resources. In response to the uplink transmission being scheduled within the at least one guard period, the terminal device disables at least a part of the at least one set of SRS resources for transmitting the SRS.

公开(公告)号：US20210160112A1

公开(公告)日：2021-05-27

申请号：US17164042

申请日：2021-02-01

Applicant: NEC CORPORATION

Inventor： Yukai GAO ,  Chuangxin JIANG ,  Zhennian SUN ,  Gang WANG

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/04 ,  H04L1/16 ,  H04L1/18 ,  H04W28/06

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.

公开(公告)号：US20210120443A1

公开(公告)日：2021-04-22

申请号：US16498144

申请日：2017-03-31

Applicant: NEC CORPORATION

Inventor： Yukai GAO ,  Gang WANG

IPC: H04W24/10 ,  H04B17/336 ,  H04W72/08 ,  H04W72/04

Abstract: Embodiments of the disclosure generally relate to interference measurement. A device determines an interference measurement pattern indicating distribution of resource elements allocated for interference measurement. Then, the device determines, based on the interference measurement pattern, an interference type for measuring interference on the resource elements.

公开(公告)号：US20210076373A1

公开(公告)日：2021-03-11

申请号：US16953057

申请日：2020-11-19

Applicant: NEC CORPORATION

Inventor： Yukai GAO ,  Chuangxin JIANG ,  Gang WANG

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/12

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.

公开(公告)号：US20200374078A1

公开(公告)日：2020-11-26

申请号：US16993798

申请日：2020-08-14

Applicant: NEC CORPORATION

Inventor： Yukai GAO ,  Gang WANG

IPC: H04L5/00

Abstract: Embodiments relate to reference signal transmission and receiving in a wireless communication system A common reference signal sequence is generated based on a frequency range configuration at network side, the common reference signal sequence being shared by at least some of terminal devices respectively allocated with their own reference signal transmission configurations. The common reference signal sequence and sequence configuration information is transmitted to a terminal device, the sequence configuration information indicating a parameter by which a reference signal sequence transmitted for the terminal device can be obtained. A reference signal sequence solution with a low complexity is proposed for the wireless communication system with dynamic bandwidth allocation and/or configurable reference signal pattern, wherein only one common reference signal sequence is generated and shared by at least some of terminal devices, irrespective of reference signal transmission configurations like bandwidth allocation and/or reference signal pattern configuration.