Huawei Technologies Co., Limited

Telefonaktiebolaget Lm Ericsson (publ)

China Academy of Telecommunications Technology

Future Wei Technologies, Inc.

China Petroleum & Chemical Corporation

Sinopec (beijing) Research Institute of Chemical Industry Co., Ltd.

Ruiqi Zhang

Xueru Li

Jianqin Liu

Di Zhang

Kunpeng Liu

Hai Feng Wang

Zhiheng Guo

Xiang Gao

Hao Sun

Huangping Jin

Yongxing Zhou

Weimin Xiao

Jialing Liu

Qian Cheng

Lixia Xue

Bingyu Qu

David Astely

Yang Hu

Yongzhao Cao

Shiqiang Suo

Xianda Liu

Qiang Wu

Ting Wang

Bin Liu

Yuanjie Li

Peng Li

Shaohui Sun

Imadur Rahman

Wei Han

Hua Li

Shengyue Dou

Guojun Xiao

Jinyao Liang

Muhammad Imadur Rahman

Shaowei Yu

Yajing Li

Jinbiao Yang

Zhuo Yi

Xi Liu

Lunyu Zhu

Zhao Fang

Xiaona Hu

Hai Wang

Examples of communication methods and devices are described. In one example method, configuration information indicating one or more spatial domain beam basis vector groups and Q thresholds is received from a network device, where the Q thresholds correspond one-to-one to spatial domain beam basis vectors in the one or more spatial domain beam basis vector groups. L spatial domain beam basis vectors are selected from a spatial domain beam basis vector group set. K frequency domain basis vectors are selected from a frequency domain basis vector set for each of the L spatial domain beam basis vectors.

Communication method and device

The present disclosure relates to the field of oilfield plugging agents, and in particular to a plugging agent for oil extraction in an oilfield and a preparation method therefor and an application thereof.

Plugging agent for oil extraction in oilfield and a preparation method therefor and application thereof

Embodiments of this application provide an SRS sending method, an SRS receiving method, and a device. A manner of determining an antenna used to send an SRS is provided. In addition, a case in which one subframe includes a plurality of symbols is considered by using a quantity of first time units that are used by a terminal device to send an SRS in one uplink subframe and a case in which one antenna is enabled to implement continuous sending as much as possible is also considered by using a quantity of first time units that are consecutively used to send the SRS in one subframe by using a same antenna.

SRS sending method, SRS receiving method, and device

An embodiment method, by a user equipment (UE), includes performing a channel measurement (CM) on a first subset of a set of non-zero-power (NZP) CSI reference signal (CSI-RS) resources and an interference measurement (IM) on at least a second subset of the set of NZP CSI-RS resources. The second subset includes one or more NZP CSI-RS ports. The IM is performed according to assumptions: each NZP CSI-RS port in the second subset corresponds to an interference transmission layer, the IM being in accordance with a set of energy per resource element ratios each associated with one NZP CSI-RS resource in the second subset; and other interference not associated with the interference transmission layers is on the first and second subsets. The method includes generating a channel state information (CSI) report based on the CM and IM and transmitting the CSI report to a network.

System and method for channel measurement and interference measurement in wireless network

One example method includes determining, by a terminal device, that at least two physical uplink control channel (PUCCH) resources collide in a time unit n, where n is an integer, and the at least two PUCCH resources include a first resource configured for first uplink control information (UCI) and a second resource configured for second UCI. The terminal device can determine the first resource and a third resource in the time unit n, where the third resource is one of M PUCCH resources, the first resource and the third resource do not include a same orthogonal frequency division multiplexing (OFDM) symbol in time domain, M is a positive integer greater than or equal to 1, the first resource is used to carry a part or all of the first UCI, and the third resource is used to carry a part or all of the second UCI.

Resource determining method and apparatus

Embodiments of the present invention disclose a communication method and a device. Configuration information indicating one or more spatial domain beam basis vector groups and Q thresholds is received from a network device, where the Q thresholds correspond one-to-one to spatial domain beam basis vectors in the one or more spatial domain beam basis vector groups. L spatial domain beam basis vectors are selected from a spatial domain beam basis vector group set. K frequency domain basis vectors are selected from a frequency domain basis vector set for each of the L spatial domain beam basis vectors.

A channel state information reporting method and apparatus are described. The method can include a terminal device obtaining first indication information and sending the first indication information to a network device. The network device receives the first indication information, where the first indication information indicates a differential value between channel state information of a first antenna port set and channel state information of a second antenna port set. 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.

Channel state information reporting method and apparatus

This application discloses methods an apparatuses for sending and receiving uplink control information in the field of communications technology. In some implementations, a terminal device may receive first downlink control information (DCI) from a network device; determine, based on the received first DCI, that an uplink shared channel scheduled by using the first DCI is used to send only uplink control information (UCI); and send first UCI to the network device through the uplink shared channel scheduled by using the first DCI. In other words, the network device indicates to the terminal device by using DCI so that the terminal device can determine, based on an indication of the network device, whether the uplink shared channel scheduled by using the DCI is used to send only the UCI.

Uplink control information sending, uplink control information receiving method, and apparatus

This application provides a channel state information reporting method and apparatus. The method includes: A terminal device receives M pieces of downlink control information, where first downlink control information in the M pieces of downlink control information indicates a first channel state information configuration, the first channel state information configuration is associated with a first channel state information interference measurement CSI-IM resource group, and the first CSI-IM resource group includes NCSI-IM resources, where M and Nare positive integers, and Nis greater than 1; and the terminal device measures a target CSI-IM resource, and reports channel state information, where the target CSI-IM resource is determined by the terminal device from the NCSI-IM resources based on M, and a quantity of target CSI-IM resources is less than N.

Embodiments of this application disclose terminal device capability transmission methods, apparatuses, and systems. In an implementation, a terminal device transmits capability information to a network device, the capability information indicates a maximum quantity of ports of reference signals for channel state information (CSI) measurement supported by a terminal device in a time-domain unit, wherein the time-domain unit is one slot, and the capability information is determined based on a capability of the terminal device.

Terminal device capability transmission method, apparatus, and system

This application provides a data transmission method, a terminal device, and a network device. The method includes: determining, by a terminal device, reference information; and sending, by the terminal device, second channel state information (CSI) based on a comparison result of the reference information and a status parameter, where the second CSI includes all parameters in first CSI or includes some parameters in the first CSI, the first CSI is CSI that needs to be reported and that is configured by a network device for the terminal device, and the status parameter includes at least one of a transmission parameter of uplink data, a parameter in the first CSI, and a transmission parameter of the first CSI. The data transmission method, the terminal device, and the network device in embodiments of this application help improve transmission performance of CSI.

Data transmission method, terminal device, and network device

This application provides an information transmission method and apparatus. The method includes: receiving, by a terminal device, a plurality of pieces of downlink control information DCI, where each of the plurality of pieces of DCI is used to trigger reporting of one piece of UCI and indicate a physical uplink control channel PUCCH resource carrying the UCI, the UCI includes at least one piece of channel state information CSI and response information, and PUCCH resources indicated by the plurality of pieces of downlink DCI occupy at least one same orthogonal frequency division multiplexing OFDM symbol; and sending, by the terminal device, target UCI on a target PUCCH resource, where the target UCI includes UCI triggered by the plurality of pieces of DCI, and the target PUCCH resource is one of the PUCCH resources indicated by the plurality of pieces of DCI.

Information transmission method and apparatus

A method for transmitting a sounding reference signal and a terminal device are provided. The method includes: receiving, by the terminal device, SRS configuration information from a network device; determining, based on one or more of an SRS bandwidth configuration parameter, a sequence number nof a quantity of SRS transmissions, a quantity &#x39b; of antenna ports, and the received SRS configuration information, an index &#x3b1;(n) corresponding to an antenna port used to transmit an SRS; selecting the antenna port with the index of &#x3b1;(n) from indexes corresponding to the &#x39b; antenna ports; and transmitting the SRS through the antenna port with the index of &#x3b1;(n) during an nSRS transmission. nis an integer greater than or equal to 0, &#x39b; is a positive integer greater than or equal to 4, and a symbol * indicates a multiplication operation.

Method for transmitting sounding reference signal and terminal device

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&#xd7;W, and elements in Win 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.

Precoding matrix indication method, communications apparatus, and storage medium

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Beijing, China

Ruiqi Zhang