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91. 发明公开

EP4024739A1 REFERENCE SIGNAL TRANSMISSION METHOD AND COMMUNICATION APPARATUS 审中-实审
公开(公告)号：EP4024739A1
公开(公告)日：2022-07-06
申请号：EP20862670.5
申请日：2020-09-10
申请人： Huawei Technologies Co., Ltd.
发明人： WEI, Yi , LI, Xueru , QU, Bingyu , ZHANG, Di , GONG, Mingxin
IPC分类号： H04L5/00 , H04W72/04
摘要： This application provides a reference signal transmission method and a communication apparatus. In the reference signal transmission method, a second time unit is a time unit indicated by a time offset indicator n in valid uplink transmission time units or valid downlink transmission time units starting from a first time unit. The first time unit is used to receive first information. The first information is used to trigger a terminal device to transmit a reference signal. The second time unit is used by the terminal device to transmit the reference signal. Compared with a manner in which the time offset indicator n indicates a time offset between the first time unit and the second time unit, this implementation helps improve flexibility of selecting the first time unit, and reduce a quantity of bits required by the time offset indicator n.

92. 发明公开

EP3979738A1 DOWNLINK CONTROL CHANNEL TRANSMISSION METHOD, RECEIVING NETWORK ELEMENT, AND SENDING NETWORK ELEMENT 审中-公开
公开(公告)号：EP3979738A1
公开(公告)日：2022-04-06
申请号：EP21192053.3
申请日：2017-09-26
申请人： Huawei Technologies Co., Ltd.
发明人： LI, Xueru , QU, Bingyu , LIU, Kunpeng
IPC分类号： H04W72/04
摘要： Embodiments of the present invention provide a downlink control channel transmission method, a receiving network element, and a sending network element, to improve accuracy of beam measurement. A receiving network element obtains target downlink control information DCI on a first target control channel candidate in a target control channel candidate set, where the target DCI is DCI of the receiving network element, and the target control channel includes one or more control channel element groups CCEGs; the receiving network element determines, based on the target DCI, a quantity of measurement reference signals and a time-frequency resource corresponding to each measurement reference signal; the receiving network element measures each measurement reference signal, to obtain channel quality information corresponding to each measurement reference signal; and the receiving network element reports the channel quality information corresponding to each measurement reference signal to a sending network element.

93. 发明公开

EP3846365A1 PRECODING MATRIX INDICATION METHOD, COMMUNICATION APPARATUS, AND STORAGE MEDIUM 有权
公开(公告)号：EP3846365A1
公开(公告)日：2021-07-07
申请号：EP18935614.0
申请日：2018-09-28
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： ZHANG, Ruiqi , LI, Xueru
IPC分类号： H04L1/00 , H04L5/00 , H04B7/06
摘要： Embodiments of this application provide a precoding matrix indication method, a communications apparatus, and a storage medium. A precoding matrix of each of K frequency-domain units satisfies W = W 1 × W 2 , and elements in W 2 in the K frequency-domain units are represented by P elements that are relatively few. A terminal device reports third indication information, where the third indication information includes first indication information and the second indication information, and the first indication information and the second indication information are independently encoded. The first indication information is used to indicate the P elements, and the second indication information is used to indicate P. Therefore, the terminal device can adjust a quantity of information bits of the second indication information based on a channel condition change, thereby improving precoding matrix reporting efficiency.

94. 发明公开

EP3800819A1 METHOD AND DEVICE FOR REPORTING CHANNEL STATE INFORMATION 有权
公开(公告)号：EP3800819A1
公开(公告)日：2021-04-07
申请号：EP18925777.7
申请日：2018-07-10
申请人： Huawei Technologies Co., Ltd.
发明人： LI, Xueru , ZHANG, Ruiqi
IPC分类号： H04L5/00
摘要： This application provides a channel state information reporting method and apparatus. The method includes: A terminal device obtains first indication information and sends the first indication information to a network device, and the network device receives the first indication information, where the first indication information is used to indicate a differential value between channel state information of a first antenna port set and channel state information of a second antenna port set; and the first antenna port set includes x antenna ports of the terminal device, the second antenna port set includes m antenna ports of the terminal device, and the first antenna port set is different from the second antenna port set. The channel state information reporting method and apparatus in embodiments of this application help improve accuracy of channel state information obtained by a network device, and improve data transmission performance. The method provided in the embodiments is applicable to a communications system, for example, a V2X system, an LTE-V system, a V2V system, an Internet-of-Vehicles system, an MTC system, an LTE-M system, an M2M system, an Internet-of-Things system, etc.

95. 发明公开

EP3787200A1 CHANNEL STATE INFORMATION RECEIVING METHOD AND DEVICE 有权
公开(公告)号：EP3787200A1
公开(公告)日：2021-03-03
申请号：EP20179868.3
申请日：2018-04-20
申请人： Huawei Technologies Co., Ltd.
发明人： ZHANG, Ruiqi , LI, Xueru , ZHANG, Di
IPC分类号： H04B7/0456 , H04B7/06
摘要： A channel state information sending method, a channel state information receiving method, and a device are disclosed, to reduce resource overheads required when a terminal device feeds back CSI to a network device in a scenario of a high precision codebook-based precoding matrix. The method includes: determining, by a terminal device, a precoding matrix W; sending, by the terminal device, a signal including CSI to a network device; obtaining, by the network device, an RI and indication information based on the signal including the CSI; obtaining, by the network device, a PMI2 based on the RI and the indication information; and determining, by the network device, the precoding matrix W based on the rank indicator RI and the second precoding matrix indicator PMI2.

96. 发明公开

EP3633883A1 INTERFERENCE POWER MEASUREMENT METHOD AND DEVICE 有权
公开(公告)号：EP3633883A1
公开(公告)日：2020-04-08
申请号：EP18817392.6
申请日：2018-06-08
申请人： Huawei Technologies Co., Ltd.
发明人： LI, Xueru , ZHANG, Ruiqi , ZHANG, Di , ZHOU, Yongxing
IPC分类号： H04B17/345 , H04W24/10
摘要： An interference power measurement method and a device are provided. The method includes: receiving, by a terminal, first signaling that carries first indication information, where the first indication information is used to indicate n first channel state information-reference signal CSI RS resources, and a j th first CSI RS resource is associated with a power parameter P c,j ; and sending, by the terminal, a channel quality indicator CQI, where the CQI is determined based on a total interference power. The total interference power is a linear weighting result of an interference power measured on each of the n first CSI RS resources and an interference power I 0 measured on a zero power CSI RS resource. A weighting coefficient of an interference power I j measured on the j th first CSI RS resource is a function of the power parameter P c , j , and a weighting coefficient of I 0 is a function of 1 − ∑ j = 1 n P c , j . Therefore, according to the foregoing method, the terminal can relatively accurately measure an interference power, and further obtain an accurate CQI, thereby improving PDSCH transmission performance.

97. 发明公开

EP3565141A1 METHOD FOR TRANSMISSION DIVERSITY, TERMINAL AND BASE STATION 无效
公开(公告)号：EP3565141A1
公开(公告)日：2019-11-06
申请号：EP18736535.8
申请日：2018-01-04
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Kunpeng , LI, Xueru , QU, Bingyu
IPC分类号： H04B7/06 , H04B7/0456
摘要： The present invention provides an information feedback method and apparatus. The method includes: receiving signaling sent by a base station, where the signaling is used to instruct to feed back transmit diversity-based channel state information; and sending feedback information to the base station, where the feedback information includes precoding indication information PMI, the PMI is used to indicate a precoding matrix in a precoding matrix set, and a structure of the precoding matrix is one of two specific structures. According to the feedback method and apparatus in the present invention, beam blocking can be effectively avoided, and transmission performance can be improved.

98. 发明公开

EP3515147A1 RANDOM ACCESS METHOD, DEVICE AND SYSTEM, TERMINAL AND BASE STATION 有权
公开(公告)号：EP3515147A1
公开(公告)日：2019-07-24
申请号：EP17854849.1
申请日：2017-09-26
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Kunpeng , LI, Xueru , QU, Bingyu
IPC分类号： H04W74/08
摘要： The present invention provides an access method, a terminal device, and a base station. The method includes: determining, by a terminal device at a current moment, that a preset condition for a link exception is met, and determining that the current moment is within a preconfigured time window; selecting, by the terminal device, one access resource from at least two preconfigured access resources as a target access resource, where the at least two access resources are valid for the terminal device in the time window, each of the at least two access resources includes a time-frequency resource and a sequence corresponding to the time-frequency resource, and Radio Resource Control RRC context information of the terminal device is stored in a base station in the time window; and sending, by the terminal device, an access signal to the base station by using a time-frequency resource in the target access resource, where the access signal is determined based on a sequence in the target access resource. In embodiments of the present invention, the terminal device does not need to re-request an RRC resource, thereby shortening an access delay of the terminal device.

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